In April at Ferny Grove overnight temperatures were close to average. Daytime temperatures were well above average and the highest on record, with many warm days during the month. In the Brisbane area most of the official sites measured close to average overnight temperatures. Maximum temperatures were above or well above average and record high at some locations. Very little rainfall was observed at Ferny Grove and was well below average that was 14 % of the long term average. In April all the official sites in the Brisbane area observed below or well below average rainfall totals. At Ferny Grove air pressure was above average, mean and mean minimum relative humidity was below average, mean maximum relative humidity was above average, dew point was near average (mean, mean minimum and mean maximum), wind speed was below average and there were 1 thunderstorm (1 thunder day).
Temperature – close to average overnight, well above average daytime temperatures
Monthly Mean Minimum Temperature: 16 ºC, equal to the long term average and 0.4 ºC lower than same month in 2019. This is the equal fifth highest and lowest on record for April and the equal lowest since 16 ºC in 2018. Most of the official sites in the Brisbane saw close to average mean minimum temperatures, with most of these observing positive anomalies from the long term average. Some coastal sites measured above average mean minimum temperatures, which was 0.7 ºC above average at Brisbane Aero (mean minimum temperature of 17.2 ºC), 0.6 ºC above average at Logan City Treatment Plant (16.7 ºC) and 0.5 ºC above average at Point Lookout (20.1 ºC). Cape Moreton Lighthouse measured the highest anomaly at 1.5 ºC above average and highest mean minimum temperature of all the sites at 20.7 ºC. The remaining sites saw close to average mean minimum temperatures between 0.2 ºC below average at Amberley and 0.5 ºC above average at Brisbane (17.9 ºC) and 20.1 ºC at Point Lookout. The lowest mean minimum temperature was 12.1 ºC at Canungra.
Monthly Mean Maximum Temperature: 29.1 ºC, 2.7 ºC above average and 2.4 ºC higher than same month in 2019. This is the highest on record for April on record exceeding the previous record high of 28.9 ºC in 2016. All of the official sites measured above average mean maximum temperatures and the inland sites measured temperatures that were 2 ºC above average. The highest mean maximum temperature was 29.8 ºC at Gatton and observed the highest anomaly from the long term average of 2.6 ºC above average. The other inland sites measuring well above average mean maximum temperatures were 2.2 ºC above average at Amberley (29.4 ºC), Archerfield at 2.4 ºC above average (29 ºC) and 2.5 ºC above average at Beaudesert (29.3 ºC). The remaining sites measured mean maximum temperatures that were between 0.8 ºC above average at Point Lookout (27.2 ºC) and 1.9 ºC above average at Logan City Treatment Plant (28.3 ºC). The lowest mean maximum temperature was 26.1 ºC at Cape Moreton Lighthouse (1.8 ºC above average). Brisbane observed a mean maximum temperature of 28.7 ºC (1.6 ºC above average). Logan City Treatment Plant measured a new record high mean maximum temperature for April exceeding the old record by 0.2 ºC in 2016. Brisbane Aero measured a new record exceeding the previous record in 2016 by 0.1 ºC.
Mean Monthly Temperature: 22.6 ºC, 1.4 ºC above average, 1 ºC higher than same month in 2019. This is the second highest on record for April and the highest since the current record high of 22.7 ºC in 2016.
Lowest Temperature: 11.9 ºC on 21 April 2020 at 6:03 AM. Same month in 2019 was 14.1 ºC. This is equal fifth highest monthly and daily minimum temperature for April on record, and the lowest since 11.7 ºC in 2018 on 30 April at 6:42 PM. Official stations in the Brisbane area observed the lowest temperature of the month at most sites on the 20th and at some sites on the 13th and 21st. The lowest was 7.1 ºC at Amberley on the 20th and the highest was 18 ºC at Cape Moreton Lighthouse on the 20th. The lowest temperature at Brisbane was 14.1 ºC on the 20th. In the Brisbane area there were cool nights between the 12th and 17th and most nights from the 19th were cooler than usual.
Highest Temperature: 34.2 ºC on 17 April 2020 at 3:19 PM. The same month in 2019 was 30.5 ºC. This is the highest maximum daily temperature for April on record, exceeding the previous record high of 33.1 ºC in 2018 on 15 April at 2:09 PM. The official sites measured the highest temperature for the month on the 17th at many sites and at some sites on the 2nd, 4th and 11th. The lowest was 27.9 ºC at Cape Moreton Lighthouse on the 4th and the highest was 35.1 ºC at Gatton on the 17th. The highest temperature observed at Brisbane was 33.6 ºC on the 17th. Above average temperatures were observed during many days of the month. Logan City Treatment Plant observed its highest temperature for April for the past 28 years of 33.8 ºC exceeding the previous record of 33.4 ºC in 2006.
Lowest Maximum Temperature: 24.7 ºC on 19 April 2020 at 3:12 PM. This is the second highest monthly lowest maximum daily temperature for April on record, the highest since current record high of 24.8 ºC in 2016, the equal twenty-fifth lowest daily minimum temperature for April and the lowest since 23.6 ºC on 30 April 2019 at 9:58 AM. This month in 2019 was 23.3 ºC. Many of the official sites measured the coolest day of the month on 19th and at some sites on the 10th, 13th and 18th. These ranged between 22.8 ºC at Beerburrum on the 8th and Point Lookout on the 19th. In the Brisbane area cool days were observed during a very low number of days mostly during the middle of the month. The lowest maximum temperature at Brisbane was 25.3 ºC on the 19th.
Highest Minimum Temperature: 20.6 ºC on 4 April 2020 at 6:39 AM. This is the third highest monthly April highest daily minimum temperature on record, the fifth highest daily minimum temperature for April and the equal highest since 20.6 ºC in 2016 on 4 April at 6:30 AM. This month in 2019 was 19 ºC. In the Brisbane area the warmest night occurred at all sites on the 4th. These ranged between 19.8 ºC at Amberley and 24 ºC at Point Lookout. The highest minimum temperature measured at Brisbane was 22.6 ºC on the 4th. Warm nights were measured during most of the first 11 days of the month and again on the 18th, 28th and 29th.
Monthly Mean Minimum Grass Temperature: 14.6 ºC (0.7 ºC lower than same month in 2019).
Lowest Minimum Grass Temperature: 10.6 ºC on 21 April 2020 (2.2 ºC lower than same month in 2019). This coincided with the lowest minimum air temperature of 11.9 ºC for the month.
Highest Minimum Grass Temperature: 19 ºC on 4 April 2020 (1.2 ºC higher than same month in 2019). This coincided with the highest minimum air temperature of 20.6 ºC for the month.
Highest Minimum Grass Temperature Depression: 2.7 ºC on 18 April 2020 with a minimum grass temperature of 17 ºC and an air temperature of 19.7 ºC.
Lowest Minimum Grass Temperature Depression: 0.6 ºC on 20 April 2020 with a minimum grass temperature of 11.7 ºC and an air temperature of 12.3 ºC.
Minimum temperatures in April saw a mixture of above average and below average temperatures. Most warm nights occurred during the first 11 days of the month with several periods of below average temperatures from the middle of the month. The 1st was 1 ºC above average, 3 ºC above average on the 2nd and 3rd, 5 ºC above average on the 4th and eased to 2 ºC above average on the 5th. It cooled to 1 ºC below average on the 6th, before warming again to 1 ºC above average on the 7th, 3 ºC above average on the 8th, 4 ºC above average on the 9th, followed by 1 ºC above average on the 10th and easing to 1 ºC above average on the 11th. A cooler spell followed between the 13th and 17th and was 3 ºC below average on the 13th, 2 ºC below average on the 14th to 16th and 1 ºC below average on the 17th. The 18th was 4 ºC above average before reverting back to near average or below average during most nights for the remainder of the month. The 19th was 1 ºC below average, 4 ºC below average on the 21st, close to average on the 22nd and 1 ºC below average on the 23rd to 25th. The 26th and 27th was 1 ºC below average, warming to 2 ºC above average on the 28th before returning to near average on the 29th and 1 ºC below average on the 30th.
April maximum temperature was predominately above average with very few days of below average or near average maximum temperatures. The month started with the 1st and 2nd 4 ºC above average, rising to 5 ºC above average on the 3rd, 4 ºC above average on the 4th and 5 ºC above average on the 5th. The 6th and 7th were 3 ºC above average before a brief period of cooler days. The 8th was close to average, the 9th was 1 ºC below average, the 10th was close to average before the warm weather returned. The 11th was 6 ºC above average, 3 ºC above average on the 12th, close to average on the 13th before rising to 2 ºC above average on the 14th and 15th. The 16th was 3 ºC above average, rising to 8 ºC above average on the 17th before easing to 1 ºC above average on the 18th. The 19th was 2 ºC below average, then 3 ºC above average on the 20th and 21st, rising to 6 ºC above average on the 22nd before easing to 3 ºC above average on the 23rd and rose to 4 ºC above average on the 24th. The 25th was 2 ºC above average, 3 ºC above average on the 26th and 27th before cooling to 1 ºC below average on the 28th and then warmed to 2 ºC above average on the 29th and to 4 ºC above average on the 30th.
Heatwave Conditions (Maximum temperatures): Nil – Outside of heatwave season
MSL pressure – above average air pressure
Monthly Mean Minimum MSL Pressure: 1014.2 hPa (2 hPa higher than same month in 2019). This is the fourth lowest on record for April and the lowest since 1013.9 hPa in 2014.
Monthly Mean Maximum MSL Pressure: 1019 hPa (1.3 hPa higher than same month in 2019). This is the third lowest on record for April and the lowest since 1018.7 hPa in 2018.
Monthly Mean MSL Pressure: 1016.6 hPa (1.2 hPa above average, 4.2 hPa lower than same month in 2019). This is the third lowest on record for April and the lowest since 1016 hPa in 2014.
Lowest MSL Pressure: 1006.4 hPa on 4 April 2020 at 2:57 PM. The same month in 2019 saw 1014.4 hPa. This is the third lowest monthly minimum air pressure for April, the fifth lowest daily minimum air pressure for April and the lowest since 1006.2 hPa in 2015 on 5 April at 2:49 PM.
Highest MSL Pressure: 1024.8 hPa on 14 April 2020 at 8:47 AM. The same month in 2019 saw 1025.5 hPa. This is the fourth lowest April monthly maximum air pressure, the lowest since 1023.8 hPa in 2018 on 30 April at 9:22 PM, the fourteenth highest daily maximum air pressure for April and the highest since 1025.6 hPa on 18 April 2019 at 9:49 AM.
Note: Air pressure measurements are being closely monitored to maintain its accuracy. Over the month of April, a difference of 0.22 hPa lower compared to the official BoM Brisbane site – No. 040913 was observed which is deemed as being acceptable.
Relative Humidity – below average mean humidity and mean minimum humidity, and above average mean maximum humidity
Monthly Mean Minimum Humidity: 43.2 % (11.1 % lower than same month in 2019 and 11.4 % below average). This is the lowest on record for April exceeding the previous record low of 51.5% in 2017.
Monthly Mean Maximum Humidity: 94.9 % (1.4 % higher than same month in 2019 and 2.9 % above average). This is second highest on record for April and the highest since the current record high of 95.6% in 2018.
Monthly Mean Humidity: 69 % (4.9 % lower than same month in 2019 and 4.3 % below average). This is the lowest on record for April exceeding the previous record low of 70.1 % in 2017.
Lowest Humidity: 18 % on 5 April 2020 at 3:02 PM (13% lower than this month in 2019). This is the lowest monthly minimum humidity for April on record, exceeding the previous record low of 31% in 2019 on 5 April at 2:18 PM.
Highest Humidity: 98 % on 30 April 2020 at 7:09 AM (equalled this month in 2019). This is the second highest monthly April maximum humidity on record and equalled 98% in 2019 on 27 April 2019 at 7:17 AM.
Dew point – near average mean, mean maximum and mean minimum dew point
Monthly mean minimum dew point: 12.7 ºC (1.4 ºC below average). This is the equal second lowest monthly mean minimum dew point for April on record and the lowest since 12.7 ºC in 2017.
Monthly mean maximum dew point: 19.2 ºC (0.6 ºC below average). This is the third highest monthly mean maximum dew point for April on record and the highest since 20 ºC in 2018.
Monthly mean dew point: 16 ºC (0.4 ºC below average). This is the third lowest monthly mean dew point for April on record and the lowest since 14.7 ºC in 2017.
Lowest dew point: 2.9 ºC on 12 April 2020 at 12:15 PM. This is the lowest monthly minimum dew point for April on record, exceeding the previous record low of 3.4 ºC in 2017 on 10 April at 9:05 PM.
Highest dew point: 22.6 ºC on 4 April 2020 at 5:24 PM. This is the fifth highest monthly maximum dew point on record for April, the equal sixth highest daily dew point for April and the highest since 23 ºC in 2018 on 15 April at 3:39 PM.
Wind Speed – below average wind speed
Maximum Wind Gust: 37 km/hr on 30 April 2020 at 8:54 PM. This is the fourth lowest April maximum wind gust and the equal twentieth highest daily wind gust on record for April and the equalled 37 km/hr in 2019 on the 20 April at 4:45 PM.
Maximum Wind Speed: 21 km/hr on 30 April 2020 at 9:07 PM (Moderate Force Wind). This is the fourth lowest monthly maximum wind speed for April on record, the highest since 25.1 km/hr in 2018 on 30 April at 9:50 AM, the twenty-sixth highest daily wind speed on record for April and the highest since 28 km/hr on 15 April 2019 at 4:19 PM.
Wind Run: 2022.5 km (644.4 km higher than same month in 2019), 32.3 km above average and 1.6 % above average. This is the second highest on record for April total wind run and the highest since the current record high of 2666.9 km in 2019.
Monthly Mean Wind Speed: 2.8 km/hr (0.9 km lower than this month in 2019), and equal to the long-term average. This is the second highest on record for April and the highest since the current record high of 3.7 km/hr in 2019.
Daily Mean Maximum Wind Gust: 22.3 km/hr (2.3 km/hr lower than this month in 2019), 2.2 km/hr above average and 10.9% above average. This is the fifth lowest daily mean maximum wind gust on record for April and the lowest since the current record low of 17 km/hr in 2013.
Daily Mean Maximum Wind Speed: 11.3 km/hr, 0.4 km/hr lower than this month in 2019), 3.5 km/hr above average and 45.2 % above average. This is the third lowest daily mean maximum wind speed on record for April and the lowest since the current record low of 8.9 km/hr in 2012.
Dominant Direction: SE (S this month last year).
Rainfall – below average rainfall
Monthly Rainfall Total: 13.5 mm (80.3 mm below average) and 14.4% of the long-term average. This total is in decile 2/ 16th percentile which ranks as very low and 28.7 mm below the long-term median (32 % of long term median). This total is lower than this month in 2019 which was 64.9 mm, the sixth lowest on record for April and the lowest since 9.2 mm in 2017. The long period rainfall totals reduced after little rainfall in April on all timespans. For 6 month rainfall this is 48.7 mm above average (decile 7) with a total of 784.4 mm and 9 monthly rainfall slipped to 69.6 mm below average (decile 6) with a total of 849.9 mm. 12 monthly rainfall also was 129.3 mm below average (decile 4) with a total of 915.2 mm. 18 monthly to 36 monthly rainfall remains very much below average at 120 to 380 mm below average ranking at decile 3 and 4.
All of the main official sites in the Brisbane area observed below to well below average rainfall totals in April. Most sites ranked historically as very low or low. One site ranked as average with a total of 12.8 mm at Beaudesert (12.8 mm). Many sites ranked as low that were between 10 % of the long term average at Gatton and 33 % of the long term average at Redcliffe (a total of 29 mm which ranked as low). The highest total of all the official sites was 84.1 mm at Point Lookout (51% of the long term average which the highest of all the main official sites and ranked as low). Several sites ranked as very low and were between 7% of the long term average at Amberley (a total of 3.8 mm) and 15 % of the long term average at Cape Moreton Lighthouse (22.2 mm) and Logan City Treatment Plant (11.9 mm). Archerfield measured a record low for its April rainfall total of 3.8 mm (4 % of the long term average) exceeding the previous record low of 5.2 mm in 2007. Highvale and Wivenhoe Dam also measured record low rainfall totals of 5.8 mm and 1.4 mm respectively.
There were some shower activity in the Brisbane area in April with sites in northern and coastal locations received more frequent showers than the sites further inland. However all sites measured below average rainfall totals.
Number of Rain Days (0.1 mm or greater): 9 days, 7 less than this month in 2019 and 0.5 days above average. This is equal eighth lowest on record for April and is the lowest since 8 days in 2017.
Highest Daily Total: 4.3 mm on 20 April 2020. This is the fourth lowest for April highest daily rainfall on record, the lowest since 2.7 mm on 6 April 2017, the eighty-ninth highest daily rainfall on daily basis and the highest since 28.4 mm on 21 April 2019. The highest daily total in the Brisbane area of all official sites was 32.8 mm at Point Lookout on 11 April 2020.
The year to date total is 728.4 mm (203.6 mm above average and 38.9 % above average) and compared with previous January to April totals is the highest since 971.4 mm in 2013 and the eighth highest on record.
Monthly Rainfall Total – (automatic gauge) 24 hours to 9am: 11 mm (1.5 mm less than the site official standard gauge and within 18.5 %). Highest daily total of automatic gauge, (24 hours to 9am): 4.2 mm on 20 April 2020, (24 hours from midnight): 4.4 mm on 19 April 2020.
Note: This automatic gauge for the month of April, didn’t reach the expected accuracy (of +/- 10% of the standard gauge) at -18.5% due to low daily rainfall totals.
A brief moderate shower in the evening of the 4th with 1.2 mm measured on the 5th. In the late evening of the 7th were light showers, followed by a light shower in the early morning of the 8th and this brought 0.9 mm in the 8th. In the late morning and in the mid afternoon was a light shower with 0.3 mmm measured on the 9th. In the late evening were light showers and followed by some light showers in the early hours of the 10th produced 0.8 mm on the 10th. In the early afternoon were some light showers with 0.5 mm measured on the 11th. A few light drops of rain or very brief light showers occurred in the late morning and at times in the early to mid afternoon of the 18th. On the 19th were some light showers with 0.9 mm measured on the 19th. In the late morning was a mild thunderstorm with mostly light rain and 2 very brief periods of moderate rain. 4.3 mm was measured on the 20th. On the 28th was a late morning light to moderate shower, followed by a late evening light shower. 3.5 mm was measured on the 29th.
There was 0 days with falls of at least 25 mm (1 less than same month in 2019) with 5 days of less than 1 mm (1 less than same month in 2019).
Highest rainfall rate was 42.8 mm/hr on the 28 April 2020 at 11:01 AM. This is the fourth highest monthly rainfall rate for April, the highest since the current record high of 188.8 mm/hr in 2019 on 20 April at 4:41 PM, the ninth highest daily maximum rain rate for April and the highest since 66.2 mm/hr on 22 April at 9:55 PM.
The highest hourly rainfall total was 3.8 mm on the 19 April 2020 at 11:25 AM. This is the second lowest hourly rain for April, the lowest since the current record low of 1.6 mm in 2017 on 22 April at 5:20 AM, the seventeenth highest daily highest daily total for April and the highest since 14.2 mm on 20 April 2019 at 5:30 PM.
Number of severe thunderstorms: 0
Number of thunderstorms: 1 (Mild: 1, Moderate: 0)
Number of thunder days: 1 days
Number of nearby storms: 0
Severe thunderstorms of note in the Brisbane area: Nil
Remarks for month
- A warm day on the 1st with variable temperature from the mid morning to the mid afternoon
- A warm morning and a warm day with variable daytime temperature on the 2nd
- On the 3rd it was a warm day with variable temperature from the mid morning to the mid afternoon
- Increasing mid level clouds from the late morning on the 4th. A warm morning and a warm day with the temperature a little variable from the mid morning to the mid afternoon.
- Mostly sunny with dust haze on the 5th. A warm day. During the day the dew point and relative humidity fell and became low in the afternoon before rising sharply in the mid afternoon returning to near average with a shift of cooler wind.
- Mostly sunny on the 6th and was a warm day
- The 7th was a warm day with variable temperature from the mid morning to the mid afternoon.
- Mostly cloudy from the late morning of the 8th with some showers. A warm morning with variable temperature during the daytime where the maximum temperature was reached in the middle of the day before falling in the afternoon. High relative humidity in the late morning with a shower.
- Cloudy at times on the 9th, with a warm morning and the temperature rose and fell numerous times during the daytime
- The 10th was mostly cloudy, with variable temperature which was reached in the late morning after which the temperature fell during the rest of the day.
- Mostly sunny on the 11th and was a hot day. The dew point and relative humidity fell during the day and became low in the afternoon before partially recovering in the evening. Relative humidity was high and stable early in the day.
- The 12th was sunny and warm. The dew point was low at times before returning back to near average in the afternoon. Relative humidity was low early in the day and in the afternoon before rising sharply in the early afternoon
- Mostly sunny after a cool morning on the 13th. The temperature rose and fell several times in the early and mid afternoon
- Mostly sunny on the 14th
- The temperature was variable and rose and fell numerous times from the mid morning to the mid afternoon of the 15th
- The 16th was a warm day
- Mostly sunny and a hot day on the 17th
- Cloudy on the 18th with a warm morning. A dry W to WNW wind change at 11:33 am.
- On the 19th it was cloudy with some rainfall. The temperature reached a temporary maximum temperature in the late morning with a mild thunderstorm before the final maximum temperature in the afternoon. The relative humidity was high with the thunderstorm before easing before returning to high in the evening
- A cool morning, a warm day and mostly sunny with increasing high clouds on the 20th. The relative humidity was stable and high early before falling during the day and became low before returning to near average in the evening.
- A cool morning and mostly sunny on the 21st
- Sunny with smoke haze on the 22nd. The temperature was variable in the late morning and in the afternoon with a hot day.
- Smoke haze on the 23rd
- Mostly sunny and a warm day on the 24th
- Early mist and mostly sunny on the 25th
- The 26th saw early morning fog patches and a mostly sunny and warm day with variable temperature in the late morning and in the early and mid afternoon.
- Mostly sunny on the 27th
- A warm morning on the 28th. Relative humidity became high with a late morning light shower
- Variable temperature during the morning of the 29th, with a maximum temperature initially reached in the mid morning before falling during the rest of the morning and then rose to the maximum temperature in the afternoon
- A warm day and a mostly sunny afternoon on the 30th. In the evening the temperature fell quite quickly with a WNW to NW wind change with light to moderate winds. Dew point and relative humidity fell sharply and became low following the wind change
- 14 days of morning dew – Light: 1st to 11th, 14th, 15th, 17th, 21st to 25th, 27th, 28th and 30th, Moderate: 16th and 26th, Heavy: 20th.
Weather influences
- A high pressure system over the southern Tasman Sea extends a weakening ridge along the east Queensland coast on the 1st and the 2nd.
- On the 3rd a high pressure system near New Zealand extended a weak ridge along the east Queensland coast.
- On the 4th a surface trough and upper level trough shifted eastwards over the interior of the state before approaching the east coast later in the day which extended a moist and unstable air mass to its east
- The surface trough cleared off the southern Queensland coast early on the 5th with instability contracting northwards out of the region. New high pressure system shifted over Southern Australia and extended a dry south-westerly air flow over southern Queensland.
- A high pressure system over the Great Australian Bight extended a developing ridge along the east Queensland coast and a dry and stable air mass over southern Queensland.
- On the 7th a high pressure system shifting eastwards over the Great Australian Bight extended a dry and stable air mass across most of the state including the south with mostly settled conditions. The high pressure system extended onshore winds along the southern Queensland coast late in the day.
- The high pressure system on the 8th became slow moving over the Great Australian Bight whilst maintaining a ridge along the east Queensland coast with onshore winds along the east Queensland coast.
- The high pressure system shifted eastwards to near Tasmania and extended onshore moist winds along the east Queensland coast on the 9th.
- The 10th saw the high pressure system shift eastwards across the Tasman Sea and extend a decaying ridge along the east Queensland coast which extended onshore winds along the east Queensland coast.
- A surface trough cleared the south and south-east of the state on the 11th before contracting north-eastwards out of the region along dry and breezy conditions to develop in its wake as several fronts shift through south-eastern Australia
- A surface trough shifted off the south-east coast on the 12th before lingering over the central coast with stable conditions over the region, as a high pressure system over southern Australia extended a dry and stable air mass across southern Australia.
- On the 13th and 14th a high pressure system shifted eastwards into the western Tasman Sea and extended a ridge along the east Queensland coast, with settled conditions over the south.
- The high pressure system shifted northwards over the western Tasman Sea on the 15th to reach the northern Tasman Sea on the 16th whilst continuing to extend a ridge along the east Queensland coast with continued settled conditions over the south.
- On the 17th a weak high pressure system over the north-east Tasman Sea extended a weakening ridge contracted into the north Queensland coast. A surface trough shifted eastwards over the interior of the state and drew warm air ahead of the trough and across to the east Queensland coast.
- The 18th saw a surface trough shift eastward over the south and west of the state moving into the south-east and clearing offshore late in the day. This brought some instability and rain to the region.
- On the 19th the surface trough lingered over eastern Australia, along with a upper level trough before clearing off the south Queensland coast late in the day. This produced some instability across the region.
- A weak pressure pattern developed across southern Queensland with settled weather on the 20th.
- On the 21st a weak ridge of high pressure over the southern Queensland maintained stable conditions.
- Fine and sunny conditions continued on the 22nd as a high pressure system over south-eastern Australia extend a ridge of high pressure.
- On the 23rd the high pressure system shifted eastwards over south-eastern Australia, into the Tasman Sea on the 24th and across the Tasman Sea on the 25th and 26th. This continued to extend a ridge and a stable air mass over much of the state and across the south.
- On the 27th a new high pressure system shifted eastwards over south-eastern Australia and into the Tasman Sea. This continued to extend fine and sunny conditions due to the persistent ridge across most of the state.
- The ridge started to weaken on the 28th with some moist onshore flow as the high pressure system shifted further east across the Tasman Sea.
- The ridge decayed further and contracted northwards to north of the southern Queensland coast as a result of the high pressure system shifted further eastwards over the Tasman Sea.
- A surface trough and cold front rapidly swept across the southern and central parts of the state. This extended some instability, mostly inland of the south-east region. A dry and stable air flow then followed after the front
Daily weather notes
- 1/4/20: Partly cloudy with cu and sc clouds. A warm day with variable temperature from the mid morning to the mid afternoon. The dew point fell in the early hours before rising during the morning, became stable from the mid morning remaining close to average, before rising temporarily in the mid afternoon before becoming stable during the rest of the afternoon and in the early evening before falling slowly later in the evening close to average. Moderately high relative humidity early in the day and near average from the morning. Calm winds early in the day before S to SW winds during the morning became SW to SE later in the morning before SSE to ESE winds in the late morning, SE to SW winds in the early afternoon, before SSE to ESE winds during the rest of the afternoon. In the early evening were light S to SE winds before calm winds during the rest of the evening.
- 2/4/20: Partly cloudy with cu and sc clouds and ci clouds in the afternoon. A warm morning and a warm day. The temperature was variable from the mid morning to the mid afternoon. The dew point slowly fell in the early hours before rising during the morning and became moderately high after which the dew point fell slowly through to the early afternoon when it returned to near average. During the afternoon the dew point rose back to moderately high before falling from the mid afternoon and returned to near average in the late afternoon. In the evening the dew point was near stable and close to average. Relative humidity was near average and was a little variable later in the morning and in the afternoon. Calm winds early in the day became light SSW to WSW during the morning then backed and veered several times between S to ENE during the rest of the morning, backing to NNE in the middle of the day and veering to S and backing to NNE in the early afternoon, followed by ESE to ENE winds during the rest of the afternoon. In the evening winds were calm.
- 3/4/20: Partly cloudy with cu and sc clouds with ci clouds in the afternoon. A warm day with variable temperature from the mid morning to the mid afternoon. In the early hours the dew point fell before becoming moderately high during the morning while rising before becoming stable from the mid morning. In the early afternoon the dew point briefly rose before becoming stable for the remainder of the day moderately high though the dew point dropped slightly in the late afternoon. Moderately high relative humidity early in the day and near average from the morning. Calm winds early before light NW to NE winds in the morning, N to ENE in the early afternoon, ESE to ENE towards the mid afternoon, then ENE to NE winds during the rest of the afternoon and N to NE winds in the evening.
- 4/4/20: Partly cloudy with sc and cu clouds from the morning becoming mostly cloudy from the late morning with as clouds. A brief moderate shower in the evening. A warm morning and a warm day with the temperature a little variable from the mid morning to the mid afternoon. In the early hours the dew point slowly fell whilst returning to near average before rising during the morning back to moderately high, fell very slowly from the late morning returning to near average before slowly rising during the afternoon. In the evening the dew point fell and in the late evening the dew point returned to near average. The dew point temporarily fell during the evening shower before rising slightly after the shower. Near average and stable relative humidity in the early hours, slightly above average during the daytime and became moderately high following the evening shower. The relative humidity stopped rising and dropped slightly before the evening shower before rising with and following the shower. Light NNW to NW winds in the early hours with some NW winds, before calm winds in the morning initially before N to NW followed by WSW to ESE winds, before N to NW winds during the morning, some N to NE winds in the mid morning, WNW to NNW in the late morning and in the early afternoon before N to NW winds, followed by some W to SW winds in the mid afternoon. Calm winds during the rest of the afternoon and during the evening except for some WSW to SW winds in the 30 minutes before and with the shower.
- 5/4/20: Mostly sunny with cu clouds. Dust haze to the north. The temperature rose at a slower rate from the mid morning as humidity fell. A warm day with the maximum temperature reached in the mid afternoon before a shift in wind direction of cooler wind. The dew point fell from early in the day close to average before falling from the mid morning. In the afternoon, the dew point fell a little quicker and became moderately low in the early afternoon and low in the mid afternoon. The dew point rose sharply at 3:30pm with a shift in wind direction and rose 9 C in 2 minutes. Following this the dew point was stable and near average during the remainder of the day. Moderately high relative humidity early in the day and fell quite quickly in the morning and afternoon becoming low in the afternoon. A minimum relative humidity of 18% was reached in the mid afternoon before the shift in wind direction caused the relative humidity to rose sharply for a brief period of 18% in 2 minutes. The relative humidity continued to rose during the rest of the day and returned to near average from the late afternoon. Mostly calm winds in the early hours with some occasional WNW to SW winds before dry WSW to SSW winds from the mid morning with some W winds. WNW to SW winds in the afternoon, followed by N through to SW winds in the mid afternoon before a cooler shift to ESE to SE from 3:30pm. Winds become calm from 6:30pm.
- 6/4/20: Mostly sunny with limited cu cloud development from the mid morning. A warm day with the temperature a little variable from the mid morning to the mid afternoon. Later in the evening the temperature rose slowly after falling from the mid afternoon. The dew point was stable and near average in the early hours before rising during the morning, became stable in the mid morning and fell during the rest of the morning while remaining close to average. In the afternoon the dew point fell further and became moderately low in the mid afternoon before rising sharply in the mid afternoon for a brief period back to near average. During the rest of the afternoon the dew point slowly rose before becoming stable from the late afternoon. Near average relative humidity from early in the day before becoming moderately low from later in the morning and in the afternoon before returning to near average from the late afternoon. Calm winds early in the day before light WSW to SSW winds from 8am before variable winds of particularly WSW to SSE winds with also some SSE to N winds. Light and variable winds in the early afternoon, then S to SW before shifting ENE to SE from the mid afternoon, SSE to ESE in the late afternoon and in the early evening before calm winds from 7:30pm.
- 7/4/20: Partly cloudy with cu clouds developing from the mid morning with ci clouds in the early morning clearing during the morning. Light showers in the late evening. A warm day with variable temperature from the late morning to the mid afternoon. A shift in the wind direction followed the maximum temperature in the mid afternoon. The temperature was stable at times in the evening. The dew point slowly fell in the early hours close to average before rising slowly during the morning, fell from the mid morning close to average before rising sharply for a brief period in the mid afternoon before rising slowly during the remainder of the afternoon close to average. In the early evening the dew point fell before rising during the rest of the evening close to average. Relative humidity was near average in the early hours and during the morning, became moderately low in the afternoon, then rose sharply in the mid afternoon for a brief period and returned to near average for the rest of the day. Calm winds early before light SSW to SW winds becoming SSW to SSE in the mid morning, before an increasing spread in wind direction from the late morning of SW to SE becoming WSW to SE in the afternoon, with some SE to NE winds. From the mid afternoon winds veered to ESE to ENE (with the drop in temperature) before calm winds in the early evening. From 7pm winds were light S to SW before calm winds in the very late evening.
- 8/4/20: Partly cloudy with cu and sc becoming mostly cloudy from the late morning. A light shower in the early morning, late morning and the mid afternoon. A warm morning with the temperature near stable during much of the early hours. Quite variable temperature from the mid morning to the mid afternoon, with the temperature falling in the late morning, then rose during the middle of the day when the maximum temperature was reached before falling during the rest of the day. The dew point slowly fell in the early hours before rising in the morning close to average. The dew point rose during the morning, became stable from the mid morning and then rose slightly in the late morning close to average. In the middle of the day the dew point fell a little before becoming mostly stable in the afternoon and evening. Near average relative humidity from early in the day before the relative humidity stopped falling in the mid morning before rising in the late morning and became high with the shower, then fell again in the middle of the day back to near average and then rose during the afternoon moderately high. In the evening the relative humidity was near average. Light S to SW winds in the early hours and in the morning with some calm winds in the early hours. Light S to SW winds backed slightly to SSW to SSE from the mid morning, with some variable winds in the late morning. In the afternoon were light S to ESE winds. SSE to SE in the mid afternoon before SSW to SE winds in the evening and calm at times.
- 9/4/20: Partly cloudy with cu and sc clouds, and cloudy at times with ac, ci and cc clouds in the afternoon. Light showers in the late evening. A warm morning. A near average maximum temperature with the temperature rising and falling numerous times from the mid morning to the mid afternoon. The dew point was mostly stable and near average in the early hours before rising slightly in the morning before becoming a little variable and generally stable during the morning and afternoon, before rising slightly in the early evening and then became stable while remaining close to average. Relative humidity was near average and a little variable in the early to mid afternoon. Light WSW to SSW winds from the early hours with some calm winds in the early hours, S to SW winds in the mid morning, S to SE from the morning before S to WSW winds in the evening with calm winds at times.
- 10/4/20: Mostly cloudy with cu and sc clouds after ac clouds early in the morning. Some light showers in the early hours of the day and in the early afternoon. Variable daytime temperature with the maximum temperature reached in the late morning before generally falling after this before rising temporarily in the mid afternoon. Stable and near average dew point in the early hours before rising slowly during the morning before initially becoming stable in the early afternoon before then rising temporarily while remaining close to average. The dew point dropped a little following this before becoming stable thorough to the evening before falling from 8pm close to average. In the late evening the dew point rose a little. Relative humidity was near average in the early hours, moderately high during the daytime and rose from the late morning while rising and falling. In the mid afternoon the relative humidity dropped temporarily before rising through to the evening moderately high. Light WSW to SSW winds in the early hours with calm winds at times, SSW to SW in the morning, W to SW in the mid morning before N winds that have been followed by SW to ESE winds later in the morning. Winds became E to NE in the late morning and early afternoon before backing to N to NE during the afternoon with some E to NE later in the afternoon. In the early evening were light N to NE winds before calm winds.
- 11/4/20: Mostly sunny with cu and ci clouds clearing in the morning with some cu clouds during the day. A hot day with the temperature dropping slightly in the late morning after rising during the morning before the temperature rose during the afternoon to the maximum in the early afternoon and was near this temperature through to the mid afternoon. The dew point slowly fell in the early hours before rising during the morning close to average before becoming stable from the mid morning. From midday the dew point fell and became moderately low in the mid afternoon and low in the late afternoon. In the early evening the dew point partially recovered and became stable and moderately low during the evening. High and stable relative humidity early in the day, before becoming near average during the morning and after briefly stabilising in the late morning the relative humidity fell further during the afternoon and became low to a minimum of 25% later in the afternoon. The relative humidity recovered partially in the early evening before becoming stable in the late evening. Light W to SW winds initially in the early hours before calm winds. Light NE to NW winds during the morning, light N to NW winds from the mid morning with some WNW winds, then WSW to NW in the afternoon, WNW to SW winds in the late afternoon and in the early evening and then calm winds during the rest of the evening.
- 12/4/20: Sunny with some cu clouds from the morning. A temporary rise and fall in the temperature in the early morning. A warm day with the maximum temperature reached in the early afternoon before a shift in wind direction. The dew point was moderately low and generally stable in the early hours, fell slightly in the early morning and became low before rising in the morning before falling from 8am moderately low. In the early afternoon the dew point continued to fall before briefly rising sharply in the early afternoon back to near average. During the rest of the day the dew point remained near average while slowly falling. In the early hours the relative humidity was low and after temporarily falling and rising between 4am and 6am the low relative humidity eased to moderately low during this morning. Relative humidity became low during the afternoon as it continued to fall and fell to a low of 21% before briefly rising sharply in the early afternoon when it returned to near average during the remainder of the day. Light W to NW winds with some N to NW winds in the early hours and periods of calm winds before S to SW winds during the morning. Light SW to SE winds during the morning before shifting to E to SE in the early afternoon, SSE to SE in the mid afternoon and E to ESE later in the afternoon. In the early evening were SSE to SE winds before calm winds developed.
- 13/4/20: Mostly sunny with some cu and sc clouds and partly cloudy in the afternoon with some ci and cs clouds. A cool morning. The temperature was variable later in the morning followed by the temperature rising and falling several times in the early and mid afternoon. The dew point slowly fell in the early hours before rising during the morning close to average, then fell slowly from the mid afternoon and became stable during the afternoon whilst remaining close to average. In the late afternoon the dew point then fell slowly in the early evening and became stable during the remainder of the evening. The relative humidity was near average and was a little variable during the middle of the day. Calm winds early in the day before SSW to SW winds in the morning before shifting from the mid morning to ESE to SSE winds with some ESE to NE winds later in the morning. In the early afternoon were SSE to E winds before SE to ENE winds while slowly backing to NNE to ENE in the mid afternoon followed by ESE to ENE winds later in the afternoon and in the early evening. Calm winds followed during the rest of the evening.
- 14/4/20: Mostly sunny with some cu clouds developing from the morning. In the early hours the dew point fell slowly before rising from the early morning and then became stable in the mid morning close to average. Later in the morning the dew point fell before stabilising in the late morning, then slowly rose during the afternoon and fell slowly in the evening close to average. Moderately high relative humidity early in the day before near average relative humidity from the morning. In the afternoon the relative humidity was a little variable. Calm winds in the early hours before SW to WSW winds in the morning, light S to SW winds in the mid morning, SSE to ENE later in the morning, SSW to SE in the middle of the day and in the early afternoon before SSE to ESE winds and ESE to NE from the mid afternoon before calm winds in the evening.
- 15/4/20: Partly cloudy with cu clouds developing from morning. Variable temperature rising and falling numerous times from the mid morning to the mid afternoon. The dew point fell slowly in the early hours before rising slowly during the morning, and became stable from the mid morning close to average. In the evening the dew point fell slowly. Moderately high relative humidity early in the day and near average from the morning. The relative humidity was a little variable in the late morning and in the afternoon. Calm winds in the early hours before WSW to SSW winds in the morning, S to SW in the mid morning with some SSE to ESE winds in the late morning, before backing to ENE to ESE in the afternoon, ESE to ENE in the mid afternoon, followed by E to NE later in the afternoon before calm winds in the evening.
- 16/4/20: Clear early before partly cloudy from the morning with cu clouds clearing later in the afternoon. A warm day. The dew point fell in the early hours before rising during the morning close to average, followed by falling very slowly from the mid morning. During the early afternoon the dew point briefly rose slightly before becoming stable followed by a small fall in the late afternoon and in the evening whilst remaining close to average. Relative humidity was moderately high early in the day before returning to near average from the morning. Calm winds early before some W to SW winds in the morning, followed by calm winds and then variable winds. NNW to NE winds developed from the mid morning with some ESE to NE winds in the early afternoon, before shifting to E to SE in the mid afternoon before veering during the rest of the afternoon becoming ENE to NNE in the late afternoon and N to NNE in the evening, followed by calm winds in the very late evening.
- 17/4/20: Mostly sunny with some cu clouds developing from the morning before ci and cc clouds in the afternoon. A hot day. The dew point fell in the early hours before rising during the morning, then fell from the mid morning and became stable from the late morning close to average. The dew point was stable during the afternoon, fell slightly in the mid afternoon, rose sharply for a brief period later in the afternoon before rising more slowly during the rest of the afternoon whilst becoming moderately high. In the evening the dew point fell close to average. Moderately high relative humidity in the early hours and became near average from the morning. Calm winds in the early hours before light and variable winds in the morning before N to WNW winds from the mid morning, NW to SW in the afternoon, N to NW in the mid afternoon before ENE to NNE later in the afternoon and in the early evening, followed by calm winds.
- 18/4/20: Cloudy with as and cu clouds. A light few drops of rain or very brief light showers in the late morning and at times in the early and mid afternoon. A warm morning. The maximum temperature was reached just after a dry wind change in the late morning. The dew point fell slowly initially in the early hours before becoming stable before rising during the morning close to average. From the mid morning the dew point fell slowly close to average before falling more quickly following the wind change and became moderately low. In the afternoon the dew point rose and became stable and returned to near average later in the afternoon before falling slowly in the evening. Relative humidity was near average. Calm winds overnight before light N to NE winds in the morning before a dry W to WNW wind change at 11:33 am, with some WSW winds in the middle of the day, shifting NNW to WNW during the early afternoon. Light NNW to W winds in the afternoon before backing to WSW to SSE later in the afternoon with some calm winds before light NNE to ENE winds in the late afternoon and in the early evening with calm winds. During the rest of the evening winds have been calm.
- 19/4/20: Cloudy with ac, as and cu clouds in the morning before partly cloudy skies in the afternoon. Light showers in the early morning before clearing. A late morning mild thunderstorm with mostly light rain and 2 very brief periods of moderate rain. An initial maximum temperature was reached at 10:30am before falling before and during the thunderstorm. In the afternoon the temperature rose and reached the maximum temperature in the mid afternoon. The dew point fell in the early hours before rising during the morning and then fell from the mid morning close to average. The dew point stopped falling before rising before, during and after the thunderstorm but rose more quickly before the thunderstorm. In the afternoon the dew point rose before falling in the late afternoon and evening close to average. Near average relative humidity from early in the day before becoming high with and following the thunderstorm. In the afternoon the relative humidity fell to moderately high before returning to high in the evening. Calm winds mostly early in the day and in the morning with some W to SW winds before SW to NW in the morning. Later in the morning winds became N to NW with some NW to WNW before the thunderstorm and then NW in the afternoon. From 2pm winds were N to NE, NNE later in the afternoon with some calm winds before calm winds in the evening.
- 20/4/20: Mostly sunny with ci and cs clouds from the mid morning and increasing in the afternoon. A cool morning and a warm day. The dew point fell in the early hours, rose during the morning close to average before falling from the mid morning moderately low and became low in the late morning before stabilising. In the afternoon the dew point was generally stable before rising sharply later in the afternoon while remaining moderately low. Following this and during the evening the dew point was stable before starting to fall slowly in the late evening. High and stable relative humidity early in the day before falling during the morning and became moderately low in the mid morning and low in the late morning when it became stable. The relative humidity remained low and stable during the afternoon before rising from the late afternoon and returned to near average in the evening. Mostly calm winds from early in the day, S to SW in the mid morning, NW to WSW winds in the late morning with some N to WNW winds, NW to WSW in the early afternoon before N to WNW winds. From the mid afternoon were NW to SW winds with some N to NW winds before mostly calm winds from the late afternoon.
- 21/4/20: A cool morning. Mostly sunny with some ci clouds in the afternoon. The dew point fell slowly in the early hours before rising during the morning close to average before falling slightly in the late morning, and remained close to average in the afternoon by generally rising early in the afternoon, falling in the mid afternoon and rose in the late afternoon. In the evening the dew point was stable and near average. Mostly stable and near average relative humidity in the early hours and near average from the morning. Calm winds early before light W to SW winds in the mid morning became S to SW and then varied between S and ENE later in the morning and in the afternoon. Light E to NE winds from the mid afternoon with some E to SE winds, E to ENE in the late afternoon before calm winds in the evening.
- 22/4/20: Sunny with smoke haze. A hot day with the temperature variable in the late morning and in the afternoon. Stable dew point in the early hours before rising during the morning close to average before falling from the mid morning. In the afternoon the dew point was stable before generally rising later in the afternoon and fell very slowly in the evening whilst remaining close to average. Near average relative humidity from early in the day before becoming moderately low from the late morning and returned to near average from the late afternoon. Calm winds before light and variable winds from the mid morning of mostly SSE to W winds before further variable winds in the afternoon before NNE to E winds becoming ESE to ENE later in the afternoon. Winds became calm in the evening.
- 23/4/20: Partly cloudy with cu clouds with smoke haze. In the early hours the dew point was stable before rising during the morning, then rose more slowly from 8am, fell slowly from the mid morning, then generally rising slowly from the early afternoon before becoming stable whilst remaining close to average. The dew point fell slowly from the late morning close to average. Moderately high relative humidity in the early hours before returning to near average from the morning. The relative humidity was a little variable in the late morning and in the early afternoon. Calm winds early before SSW to WSW winds in the morning, S to SE from the mid morning before backing to NNE and then veering to S to SE in the late morning and early afternoon. This was followed by NNE to E winds in the early afternoon, ESE to ENE from the mid afternoon, ENE to NE in the late afternoon before mostly calm winds in the evening.
- 24/4/20: Mostly sunny with some cu clouds from the morning. A warm day with the temperature temporarily falling in the late morning before resuming the rise during the afternoon. The dew point fell slowly in the early hours before rising during the morning and then fell from the mid morning close to average. The dew point briefly fell sharply and then rose sharply briefly in the mid afternoon before falling slowly during the rest of the day close to average. Relative humidity was moderately high early in the day, returned to near average during the day before becoming moderately high in the evening. Calm winds early before W to SW winds in the morning, followed by light and variable winds in the morning and afternoon, E to NE winds in the mid afternoon, N to NE in the late afternoon and early evening and was followed by calm winds.
- 25/4/20: Mostly sunny with some cu clouds after early mist cleared. The temperature was a little variable from the mid morning to the mid afternoon. In the early hours the dew point fell slowly before rising during the morning, then fell from the mid morning, rose very slowly during the afternoon whilst remaining close to average before rising later in the afternoon. In the evening the dew point fell slowly. Moderately high relative humidity in the early hours, early morning and in the evening and near average during the remainder of the day. Calm winds early before S to SW winds in the morning, S to SE with some E to SE winds later in the morning, E to SE in the afternoon, E to ENE later in the afternoon before calm winds from the late afternoon.
- 26/4/20: Mostly sunny with some cu clouds after early morning fog patches. A warm day with the temperature variable from the late morning to the mid afternoon. The dew point fell slowly in the early hours, then rose during the morning close to average before falling from the mid morning close to average. In the early and mid afternoon the dew point rose, fell during the rest of the afternoon, rose in the early evening and then fell very slowly during the rest of the evening whilst remaining close to average. Moderately high relative humidity in the early hours, and then near average from the morning but was a little variable later in the morning and in the afternoon. Calm winds early before SSW to WSW winds during the morning before backing to NNE to E from later in the morning with some N winds. During the afternoon winds became E to NE, N to NE in the early evening before calm winds during the rest of the evening.
- 27/4/20: Mostly sunny with cu and ci clouds with some cc clouds in the afternoon. Later in the evening the temperature stopped falling and rose. The dew point fell slowly in the early hours, rose during the morning, then slowly fell before rising slowly from the early afternoon close to average. In the evening the dew point fell very slowly before rising later in the evening. Moderately high relative humidity in the early hours and returned to near average from the morning. Calm winds from early in the day before light S to SW winds from the mid morning with some variable winds, ENE to SE in the late morning, SSE to ESE in the early afternoon, then ESE to ENE, E to NE from the mid afternoon before calm winds in the evening.
- 28/4/20: Partly cloudy with cu and sc clouds with heavy coverage at times with ac clouds in the morning. A warm morning. A late morning light to moderate shower and a light late evening shower. Variable temperature with the temperature rising and falling a few times from the mid morning to the mid afternoon. The dew point slowly fell in the early hours before rising during the morning close to average before generally falling during the afternoon before becoming stable in the evening while remaining close to average. Near average relative humidity from early before falling slowly in the mid morning and rose in the late morning and became high with the shower. Following the shower the relative humidity fell to moderately high in the late morning and in the afternoon and was a little variable later in the afternoon. Light W to SW winds at times in the early hours before WSW to SSW in the morning, SSW to SSE from the late morning with some SSE to SE and SW to SSW winds and S to SE winds in the afternoon and early evening with some E to SE winds in the mid afternoon. Light and variable winds at times during the evening and otherwise calm.
- 29/4/20: Partly cloudy with cu and sc clouds. The temperature was rather variable initially reaching a maximum in the mid morning before falling slowly, then rose from the late morning to the maximum temperature in the early afternoon and became generally stable and fell from the mid afternoon. The dew point was initially stable before falling close to average in the early hours before rising during the morning and fell slowly from the mid morning through to the end of the day close to average. The dew point was a little variable in the early afternoon. Moderately high relative humidity in the early hours and in the evening with near average relative humidity during the day. Calm winds with some W to SW winds in the early hours before SSW to WSW winds in the morning shifting to SSE to ENE with some NNE to ENE winds from the mid morning, SE to NE in the afternoon, E to NE in the mid afternoon before calm winds from the late afternoon.
- 30/4/20: Partly cloudy with cu and sc clouds in the morning easing to mostly sunny with some cu and sc clouds in the afternoon. A warm day. The temperature fell quite quickly in the evening with and following a wind change. The dew point was stable in the early hours before rising during the morning becoming stable close to average from the late morning. In the afternoon the dew point rose briefly moderately high before rising slowly until the mid afternoon, then slowly fell during the rest of the afternoon and in the evening. From 7:50pm the dew point fell sharply initially whilst quickly returning to near average and continued to fall during the evening and became low in the late evening. Moderately high relative humidity in the early hours before returning to near average from the morning becoming moderately high in the late afternoon and in the early evening before sharply falling with the wind change initially and then continuing to fall at a slower rate during the rest of evening whilst becoming low. Calm winds overnight with SSW to SW winds during the morning continued until the mid morning, shifting NNE to NNW during the rest of the morning, N to NE in the early afternoon, E to NE in the mid afternoon with some E to SE winds, NE during the rest of the afternoon before N to NE winds in the early evening. A NW to WNW wind change followed at 7:50pm with light with some moderate winds during the rest of the evening.
Station records for April 2020
NOTE: This is a summary of the aforementioned monthly records exceeded over a monthly basis. Additionally, it lists records that are the lowest or highest in at least 5 years. See end notes for more information about record periods.
Record high April mean daily maximum temperature |
Observed [C] |
Old record |
Years of record |
Monthly average |
29.1 |
28.9 in 2016 |
10 |
26.4 |
|
|
Record high April highest daily maximum temperature |
Observed [C] |
Old record |
Years of record |
Monthly average |
34.2 on 17th at 3:19 PM |
33.1 in 2018 on 5th at 2:09 PM |
10 |
26.4 |
|
|
Record low April mean daily minimum MSL pressure in at least 5 years |
Observed [hPa] |
Most recent lower |
Years of record |
Monthly average |
1014.2 |
1013.9 in 2014 |
10 |
1015.4 |
|
|
Record low April mean MSL pressure in at least 5 years |
Observed [hPa] |
Most recent lower |
Years of record |
Monthly average |
1016.6 |
1016 in 2014 |
10 |
1015.4 |
|
|
Record low April daily minimum MSL pressure in at least 5 years |
Observed [hPa] |
Most recent lower |
Years of record |
Monthly average |
1006.4 on 4th at 2:57 PM |
1006.2 in 2015 on th at 2:49 PM |
10 |
1015.4 |
|
|
Record low April mean daily minimum relative humidity |
Observed [%] |
Old record |
Years of record |
Monthly average |
43.2 |
51.5 in 2017 |
10 |
54.6 |
|
|
Record low April mean relative humidity |
Observed [%] |
Old record |
Years of record |
Monthly average |
69 |
70.1 in 2017 |
10 |
73.3 |
|
|
Record low April daily minimum relative humidity |
Observed [%] |
Old record |
Years of record |
Monthly average |
18 on 5th at 3:02 PM |
31 in 2019 on 27th at 7:17 AM |
10 |
54.6 |
|
|
Record low April daily minimum dew point |
Observed [C] |
Old record |
Years of record |
Monthly average |
2.9 on 12th at 12:15 PM |
3.4 in 2017 on 10th at 9:05 PM |
10 |
14.1 |
|
|
Record low April daily mean wind gust in at least 5 years |
Observed [km] |
Most recent lower |
Years of record |
Monthly average |
22.3 |
17 in 2013 |
9 |
20.1 |
|
|
Record low April daily mean wind speed in at least 5 years |
Observed [km] |
Most recent lower |
Years of record |
Monthly average |
11.3 |
8.9 in 2012 |
9 |
7.8 |
|
Key records for April 2020
NOTE: These records are drawn from automatic data record for this site. See end notes for more information.
All time records |
No records |
Monthly records |
Maximum Temperature: 34.2 °C on 17 Apr 2020 at 3:19 pm |
Minimum Dew Point Temperature: 2.9 °C on 12 Apr 2020 at 12:15 pm |
Data summary tables for April 2020
Summary of Averages and Extremes for April 2020 for Ferny Grove, Brisbane, Queensland, Australia |
|
|
|
Min Temp |
Max Temp |
Mean Temp |
Temp Range |
Min Grass Temp |
Min Grass Temp Depression |
Min Relative Humidity |
Max Relative Humidity |
Mean Relative Humidity |
Min MSL pressure |
Max MSL Pressure |
Mean MSL Pressure |
Dew Point |
Max Wind Gust |
Max Wind Speed |
Daily rain |
Average |
16.0 |
29.1 |
22.6 |
13.1 |
14.6 |
1.4 |
43.2 |
94.9 |
69.0 |
1014.2 |
1019.0 |
1016.6 |
16.0 |
22.3 |
11.3 |
0.5 |
Min |
11.9 |
24.7 |
19.8 |
7.4 |
10.6 |
0.6 |
18 |
86 |
53 |
1006.4 |
1010.9 |
1008.7 |
2.9 |
17.0 |
9.0 |
|
Max |
20.6 |
34.2 |
25.5 |
19.4 |
19.0 |
2.7 |
68 |
98 |
83 |
1021.4 |
1024.8 |
1023.1 |
22.6 |
37.0 |
21.0 |
4.3 |
Total |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
13.5 |
Summary for April 2020 from long term average for Ferny Grove, Brisbane, Queensland, Australia |
|
Temperature |
Relative Humidity |
MSL Pressure |
Dew Point |
Wind Gust |
Wind Speed |
Rainfall |
Rainfall as Fraction of monthly average (%) |
Average |
+1.4 |
-4.3 |
+1.2 |
-0.4 |
+2.2 |
+3.5 |
-80.3 |
14.4 |
Min |
+0.0 |
-11.4 |
|
-1.4 |
|
|
|
|
Max |
+2.7 |
+2.9 |
|
+0.6 |
|
|
-16.7 |
|
Monthly averages and extremes for Year of 2020 to Date for Ferny Grove, Brisbane, Queensland, Australia |
|
Temperature |
Temperature Anomaly from Long Term Avg. |
Rain total |
Rain Anomaly |
Rain days |
|
Avg Min |
Avg Max |
Low Min |
High Max |
Average |
Min |
Max |
Average |
|
|
|
Jan-20 |
21.9 |
32.2 |
18.6 |
35.4 |
27.0 |
+1.2 |
+1.5 |
+1.4 |
183.3 |
+38.3 |
15 |
Feb-20 |
21.2 |
30.4 |
19.6 |
37.6 |
25.8 |
+0.9 |
+0.4 |
+0.7 |
389.2 |
+227.4 |
20 |
Mar-20 |
18.7 |
29.1 |
15.1 |
35.2 |
23.9 |
-0.5 |
+0.4 |
-0.0 |
142.4 |
+18.2 |
15 |
Apr-20 |
16.0 |
29.1 |
11.9 |
34.2 |
22.6 |
+0.0 |
+2.7 |
+1.4 |
13.5 |
-80.3 |
9 |
YTD |
19.5 |
30.2 |
11.9 |
37.6 |
24.8 |
+0.4 |
+1.3 |
+0.8 |
728.4 |
+203.6 |
59 |
Min Temperature and time of occurrence for April 2020 |
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
10 |
11 |
12 |
13 |
14 |
15 |
16 |
17.8 |
18.5 |
18.5 |
20.6 |
17.6 |
15.1 |
16.7 |
18.4 |
19.6 |
17.9 |
17.3 |
15.1 |
12.9 |
13.8 |
14.4 |
13.8 |
6:17 A |
6:08 A |
5:28 A |
6:39 A |
6:11 A |
6:16 A |
5:23 A |
3:56 A |
5:57 A |
5:46 A |
6:08 A |
6:43 A |
6:12 A |
5:16 A |
6:16 A |
6:22 A |
17 |
18 |
19 |
20 |
21 |
22 |
23 |
24 |
25 |
26 |
27 |
28 |
29 |
30 |
|
|
14.8 |
19.7 |
14.8 |
12.3 |
11.9 |
16.2 |
15.3 |
14.7 |
14.8 |
14.3 |
14.3 |
18.4 |
16.2 |
15.4 |
|
|
6:15 A |
5:40 A |
4:28 A |
6:25 A |
6:03 A |
6:19 A |
6:30 A |
5:26 A |
6:38 A |
6:20 A |
6:22 A |
6:09 A |
6:17 A |
5:46 A |
|
|
Max Temperature and time of occurrence for April 2020 |
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
10 |
11 |
12 |
13 |
14 |
15 |
16 |
30.3 |
30.0 |
31.6 |
30.3 |
30.9 |
29.6 |
29.7 |
26.9 |
27.3 |
25.9 |
32.4 |
29.1 |
26.9 |
28.1 |
28.1 |
29.3 |
1:34 P |
11:58 A |
12:57 P |
11:06 A |
2:04 P |
2:17 P |
2:39 P |
12:11 P |
12:06 P |
11:12 A |
1:17 P |
12:20 P |
2:56 P |
12:00 P |
12:58 P |
12:26 P |
17 |
18 |
19 |
20 |
21 |
22 |
23 |
24 |
25 |
26 |
27 |
28 |
29 |
30 |
|
|
34.2 |
27.6 |
24.7 |
29.3 |
29.4 |
32.5 |
29.3 |
30.2 |
28.8 |
29.1 |
29.1 |
25.8 |
27.9 |
30.0 |
|
|
3:19 P |
11:38 A |
3:12 P |
1:48 P |
1:07 P |
2:14 P |
1:20 P |
1:44 P |
1:00 P |
12:43 P |
11:58 A |
2:39 P |
12:46 P |
1:59 P |
|
|
Daily Rainfall for April 2020 |
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
10 |
11 |
12 |
13 |
14 |
15 |
16 |
0.6 |
Tce Dew |
0.0 |
0.0 |
1.2 |
Tce Dew |
0.0 |
0.9 |
0.3 |
0.8 |
0.5 |
0.0 |
0.0 |
Tce Dew |
0.1 Dew |
0.1 Dew |
17 |
18 |
19 |
20 |
21 |
22 |
23 |
24 |
25 |
26 |
27 |
28 |
29 |
30 |
|
|
Tce Dew |
0.0 |
0.9 |
4.3 |
0.0 |
0.0 |
Tce Dew |
0.0 |
0.0 |
0.1 Dew |
0.1 Dew |
0.0 |
3.5 |
0.1 Dew |
|
|
Temperature values coloured according to its difference from the long term average for this month. Outlined value mark highest and lowest values.
Maximum temperatures are measured over the 24 hours from 9 am on the day of measurement. Minimum temperatures are measured over the 24 hours to 9 am of the day of measurement. This was previously different to the official time standards and measured in degrees ºC (before 2018).

Rainfall is measured over 24 hours to 9am and recorded on that day. This is the same as the official time standard and measured in millimetres. Some measurements are not made at 9am and is adjusted based on the automatic record. For other variables see Notes below.
Notes
Based on Bureau of Meteorology Climate summaries (Copyright) of which some data was obtained from. From September 2017 the Bureau of Meteorology Climate summaries were expanded to provide data from official stations in and near the Greater Brisbane “Greater capital city Statistical Area” (GCCSA).
Data Copyright Ferny Grove Weather 2020, Produced 4/5/20. Data Checking has been carried out but errors may still be present and therefore there is no assurance of correctness. Corrections may be made at a later data if errors or deficiencies are found and/or improvements in data handling techniques are made, though data with major improvements may not be updated in this summary. Data measured with professional moderate accuracy equipment. This replaced non professional equipment of low accuracy with differences in the measured data. The new equipment measures the daily average wind speed and wind run about 40 % higher. Daily rainfall and grass minimum temperature is measured using non-professional equipment of moderate accuracy.
Site Commencement data is April 15 2009 except for daily rainfall which commenced on January 1 1987. Not all variables have been measured over the entire station record. Most variables are measured over a 24 hour period ending in the evening and over a 24 hour period from midnight effective October 5 2018. Maximum temperatures are measured over the 24 hours from 9 am on the day of measurement. Minimum temperatures are measured over the 24 hours to 9 am of the day of measurement. Rainfall is measured over 24 hours to 9am and recorded on that day. This is the same as the official time standard. Some rainfall measurements are not made at 9am and is adjusted based on the automatic record. Minimum Grass Temperature is measured over an approx. 12 hour period ending in the early morning. MSL refers to Mean Sea Level, which is the standard meteorological method of measuring air pressure reduced to sea level based on both elevation and temperature. Grass Minimum Depression is the difference of the grass minimum temperature from the air temperatures and is a positive value when the grass temperature is below the air temperature.
Up until March 9 2019 automatic records as Dew Point, Average Wind Speed, Dominant Wind Direction, Wind Run, Rain Rate and Hourly Rain are measured over a 24 hour period starting at midnight and recorded for that day. This started on the 6 October 2011. The automatic record is used for some data and also may be used if data is not available/ not suitable. From March 9 2019 the automatic record became the official record instead, simplifying this process. Until replaced on 5 October 2018 the temperature and humidity sensor is under exposed so minimum temperature and maximum humidity are incorrect and low accuracy rain gauge is used which are not used as the site’s official record. This data limitation does not apply to other measurements of temperatures, air pressure and humidity, wind gust, daily and monthly rainfall and rain days elsewhere in this summary which are recorded separately and form the official record for this site. The replacement equipment is sited in more exposed locations and therefore the limitations don’t apply, though the automatic daily rainfall doesn’t form the official data for the site.
Long term averages are based on all available long period past measurements from October 2019 whilst for non automatic rainfall is based on 1987 to 2017 average from the station record. Prior to this the long term average for Temperature, Relative Humidity and Air pressure is based on 2009 to 2015 average from the station record and wind speed is based on the 2010 to 2018 average from station record. Wind Run is 2011 to 2018 and Rain Rate and High Hourly Rain is 2011 to 2017.
The Fraction of monthly average expresses how much has fallen in respect to the long term average listed as a percentage. The decile ranking compares the rainfall total to the historical record for the site where the record is divided into 10 equal groups. Decile 1 is the lowest 10% of the record (10th percentile) and Decile 10 (90th percentile) is the highest 10% of the record. Decile 1 is considered “very low”, decile 2 and 3 “low”, decile 4 to 7 “average”, decile 8 and 9 “high” and decile 10 “very high”.