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).
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
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.
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.
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.
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).
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
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 |
|
|||
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 |
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”.