Monthly Meteorological Report for Ferny Grove, Brisbane in March 2019 – warm nights, hot days and high rainfall

In March at Ferny Grove overnight temperatures were well above average. Daytime temperature were also above average to a greater extend than minimum temperatures and was the highest on record. In the Brisbane area official stations also recorded very warm overnight and daytime temperatures and were record high for mean maximum temperatures at many sites. At Ferny Grove and observed at the official sites was very hot days in the first half of the month with maximum temperatures above 40 °C. Rainfall at Ferny Grove was well above average. In the Brisbane area the official sites measured above to above average rainfall totals for the month. During the month at Ferny Grove air pressure was well above average, well below average mean humidity, below above mean maximum relative humidity, well below average mean minimum relative humidity, below average mean dew point, well below average mean minimum dew point, below average mean maximum dew point, wind speed was above average, and there were 3 thunderstorms (7 thunder days).

 

Temperature – record high and well above average day-time temperatures and above average overnight temperatures

Monthly Mean Minimum Temperature: 20.4 °C, 1.7 °C above average and 1 °C higher than same month in 2018. This is the second highest on record for March and the highest since the record high of 20.5 °C in 2017. All of the official sites in the Brisbane area observed above average mean minimum temperatures, with all sites except for one site at least 1 °C above average. The lowest anomaly from the long term average was 0.6 °C at Point Lookout (22.5 °C). The highest anomaly was at Gatton with a mean minimum temperature of 19.3 °C (2 °C above average). All other sites were between 1.2 °C and 1.9 °C above average, with the highest anomalies recorded by the inland sites. The lowest mean minimum temperature was recorded by Gatton and Cape Moreton recorded the highest mean minimum temperature of 22.5 °C which was 1.3 °C above average. Brisbane observed a mean minimum temperature of 21.5 °C (1.4 °C above average).

 

Monthly Mean Maximum Temperature: 31.4 °C, 3.0 °C above average and 2.5 °C higher than same month in 2018. This is the highest on record for March and exceeds the previous record of 31.2 °C in 2015. Across the Brisbane area maximum temperatures were well above average at all of the official sites, with many sites observing new records or the highest in a number of years. These ranged between 1.1 °C and 3 °C above average; the majority were at least 2 °C above average. The highest above average and the highest mean maximum temperature was Gatton with a mean maximum temperature of 32.7 °C and was 3.1 °C above average. The other sites recording the highest anomalies from the long term average were the other inland sites, namely: Amberley (2.9 °C above average) and Archerfield (2.8 °C above average). The lowest anomaly was 1.1 °C above average at Point Lookout (29.8 °C), while Redcliffe at 1.5 °C above average (29.3 °C) and Logan City Treatment Plant (1.9 °C above average) were the only other sites recording mean maximum temperatures of less than 2 °C above average. All other sites including some inland sites observed mean maximum temperature at around 2 °C above average. The lowest mean maximum temperature was 28.1 °C at Cape Moreton Lighthouse (28.1 °C). Brisbane observed a mean maximum temperature of 31.2 °C which was 2.1 °C above average.

 

Mean Monthly Temperature: 25.9 °C, 2.3 °C above average and 1.7 °C higher than same month in 2018. This is the highest on record for March exceeding the old record of 25.7 °C in 2017. Several of the official sites also observed record new March mean temperatures and these were for Gatton, Amberley, Archerfield, Logan City Treatment Plant and Beerburrum Forest Station. This is a result of above average minimum and maximum temperatures which produced heatwave conditions.

 

Lowest Temperature: 14.1 °C at 4:46 AM on 31 March 2019. Same month in 2018 was 14.9 °C. This is the lowest monthly and daily minimum temperature for March on record, exceeding the previous record low of 14.3 °C on 10 March 2012 at 5:55 AM. Official stations in the Brisbane area observed the lowest temperature of the month on the 31st at most sites and at Logan City Treatment Plant on the 24th. The lowest was 10.4 °C at Amberley on the 31st and the highest was 17.6 °C at Logan City Treatment Plant on the 24th. The lowest temperature at Brisbane was 15.3 °C on the 31st. Most of the overnight temperatures in the Brisbane area were above average during the month, with below average temperatures on the 31st. There were some slightly below average minimum temperatures in the first few days and during the middle of the month.

 

Highest Temperature: 41.1 °C at 2:43 PM on 12 March 2019. Same month in 2018 was 35.5 °C. This is the highest monthly and daily maximum temperature for March on record, exceeding the previous monthly and daily record monthly maximum temperature for March of 37.3 °C on 5 March 2015 at 3:00 PM. The official sites measured the highest temperature for the month on the 12th at most sites and at some sites on the 9th, 13th, 21st. The lowest was 30.3 °C at Cape Moreton on the 9th and the highest was 41.3 °C at Amberley on the 12th. Brisbane observed its highest temperature of 37.7°C on the 12th. Above average daytime temperatures were present during most of the month in the Brisbane area during the month. This occurred over 2 main periods with a peak of the heat between the 10th and 12th. The bureau noted that: “A number of sites had their highest March temperature on record. On 11 March, Gatton recorded a maximum temperature of 40.0 °C (previous March record was 39.5 °C on 14 March 1998), and the following day, 41.1 °C. From available records, it is the first time any site has recorded a daily maximum temperature at or above 40 °C in March, in the South East Coast District.” Additionally the bureau stated: “ A number of sites in the South East Coast District exceeded a daily maximum temperature of 40 °C, including Amberley with 41.3 °C (previously 38.9 °C on 11 March 2007), Beaudesert with 40.2 °C (previously 37.9 °C on 12 March 2019) and Archerfield with 40.2 °C (previously 38.7 °C on 11 March 2007).”

 

Lowest Maximum Temperature: 21.0 °C at 12:40 PM on 27 March 2019. This is the lowest monthly and daily March lowest maximum temperature on record, exceeding the previous record of 21.8 °C on 30 March 2011 at 12:04 PM. This month in 2018 was 23.6 °C. Official stations in the Brisbane area measured the coolest day at most sites on the 27th and at Cape Moreton Lighthouse on the 31st. These ranged between 21.4 °C at Beerburrum on the 27th and 24 °C at Cape Moreton Lighthouse on the 24th. The lowest maximum temperature at Brisbane was 22.8 °C on the 27th. In the Brisbane area official sites measured cool days at the end of the month and also on 16th and 17th. Beerburrum observed a new record low for March daily maximum temperature and Brisbane equalled its current record low.

 

Highest Minimum Temperature: 22.9 °C on 21 March 2019 at 4:39 AM. This is the fifth highest monthly March highest minimum temperature, the lowest since 19.8 °C in 2013 on 24 March at 10:45 PM, the equal sixth highest daily minimum temperature for March and the highest since 23.3 °C on 3 March 2018 at 6:37 AM. This month in 2018 was 24.0 °C. Official stations in the Brisbane area measured the warmest night at many sites on the 26th and at some sites on the 9th, 11th and 13th. These ranged between 22.5 °C at Amberley on the 26th and 25 °C at Point Lookout on the 26th. The highest minimum temperature at Brisbane was 24.5 °C on the 26th. In the Brisbane area the majority of the overnight temperatures were above average with 2 main periods of warm nights in the first half of the month and again during the end of the month.

 

Monthly Mean Minimum Grass Temperature: 19.4 °C (1.1 °C higher than same month in 2018)

 

Lowest Minimum Grass Temperature: 11.9 °C on 31 March 2019 (2.1 °C lower than same month in 2018). This coincided with the lowest minimum temperature of 14.1 °C for the month.

 

Highest Minimum Grass Temperature: 21.8 °C on 30 March 2019 (0.5 °C lower than same month in 2018).

 

Highest Minimum Grass Temperature Depression: 2.3 °C on 13 March 2019 with a minimum grass temperature of 18 °C and an air temperature of 20.3 °C.

 

Lowest Minimum Grass Temperature Depression: -0.3 °C on 17 March 2019 with a minimum grass temperature of 20 °C and an air temperature of 19.7 °C.

 

At Ferny Grove minimum temperatures were mostly above average, with a few days close to average and very few below average. The first 6 days were on average, warming slightly to 1 °C above average on 4th and 5th. A warm spell followed between the 6th and 12th and was 2 to 3 °C above average each day. The 13th, however was 1 °C above average and the 14th was 4 °C above average. The 15th to 18th was 1 °C above average, while the 19th was 1 °C below average and the 20th on average. Another warm spell followed from the 21st to 22nd of 2 to 4 °C above average, reducing to 1 to 2 °C above average during 23rd to 25th. On average minimum temperatures followed on the 28th and 29th, 3 °C above average on the 30th and then 5 °C below average on the 31st.

 

Maximum temperatures were predominately above average, with some below average temperatures over the second half of the month. The first few days were on average, before a period of heat from the 5th to 15th. The 5th was 3 °C above average, the 6th and 7th was 4 °C above average and easing to 2 °C above average on the 8th. From the 9th the heat increased with 9th being 4 °C above average, the 10th was 6 °C above average, the 11th was 10 °C above average (38 °C)and 12th was 13 °C above average (41.1 °C). It eased to 9 °C above average on the 13th (37.1 °C), 3 °C above average on the 14th and 7 °C above average on the 15th. It cooled to 3 °C below average on the 16th and 2 °C below average on the 17th. Another period of heat returned between the 19th and 26th and was 4 to 7 °C above average. The 22nd however was 1 °C above average and the 26th was 3 °C above average. From the 27th it was much cooler being 7 °C below average on the 27th, 4 °C below average on 28th, on average on 29th and 31st and 1 °C below average on the 30th.

 

Heatwave conditions (Maximum temperatures):

10th to 13th: – Severe intensity (34.4 °C, 38 °C, 41.1 °C, 37.1 °C)

14th to 15th: – Low intensity (31.8 °C, 35.9 °C)

23rd to 26th: - Low intensity (35.1°C, 35.9 °C, 34 °C, 31.7 °C)

 

MSL pressure – well above average air pressure

 

Monthly Mean Minimum MSL Pressure: 1012.2 hPa (0.7 hPa lower than same month in 2018). This is the fifth lowest on record for March and lowest since 1010 hPa in 2017.

 

Monthly Mean Maximum MSL Pressure: 1017.1 hPa (0.5 hPa higher than same month in 2018). This is the fourth highest on record for March and the highest since 1018.1 hPa in 2016.

 

Monthly Mean MSL Pressure: 1014.7 hPa (3.2 hPa above average, 0.1 hPa lower than same month in 2018). This is the fifth lowest on record and the lowest since 1012.3 hPa in 2017.

 

Lowest MSL Pressure: 1004 hPa on 12 March 2019 at 4:20 PM. The same month in 2018 saw 1007.3 hPa. This is the fifth lowest monthly minimum air pressure for March, the lowest since 995.3 hPa in 2017 on the 30 March at 7:40 PM, the equal eighth lowest daily air pressure for March and the lowest since 997.7 hPa on the 31 March 2017 at 1:30 AM.

 

Highest MSL Pressure: 1022.9 hPa on 1 March 2019 at 10:05 PM. The same month in 2018 saw 1021 hPa. This is the third highest March monthly maximum air pressure, the highest since 1024.2 hPa in 2015 on 30 March at 10:05 AM, the equal ninth highest daily maximum air pressure and the highest since 1023.2 hPa on 31 March 2015 at 8:45 AM.

 

Note: Air pressure measurements are being closely monitored to maintain its accuracy. Over the month of March, a difference of 0.01 hPa higher compared to the official BoM Brisbane site – No. 040913 was observed which is deemed optimum.

 

Relative Humidity– well below average mean humidity, below average mean maximum humidity and well below mean minimum humidity

 

Monthly Mean Minimum Humidity: 45.6 % (16.7 % lower than same month in 2018 and 14 % below average). This is the lowest on record exceeding the old record of 53.5 % in 2015.

 

Monthly Mean Maximum Humidity: 89.8 % (5.8 % lower than same month in 2018 and 2.5 % below average). This is second lowest on record and the lowest since the record low of 83.9% in 2014.

 

Monthly Mean Humidity: 67.7 % (11.2 % lower than same month in 2017 and 8.3 % below average). This is the lowest on record exceeding the old record of 69.7 % in 2014.

 

Lowest Humidity: 12 % on 12 March 2019 at 2:45 PM (32 % lower than this month in 2018). This is the lowest monthly and daily minimum humidity for March on record exceeding the old record of 31 % on 9 March 2012 at 3:30 PM.

 

Highest Humidity: 97% on 18 March 2019 at 7:59 AM (1% lower than this month in 2018). This is the second lowest monthly March high humidity and the lowest since the current record low of 93% in 2014 on 28 March at 12:00 AM.

 

Dew point –below average mean, well below average mean minimum and below average mean maximum dew point

 

Monthly mean minimum dew point: 15.7 °C (2.3 °C below average). This is the lowest monthly mean minimum dew point for March, exceeding the old record of 16.7 °C in 2012.

 

Monthly mean maximum dew point: 21.5 °C (0.5 °C above average). This is the fifth highest monthly mean maximum dew point for March and the lowest since 20.7 °C in 2014.

 

Monthly mean dew point: 18.6 °C (0.9 °C below average). This is the lowest monthly mean dew point for March, exceeding the old record of 18.7 °C in 2012.

 

Lowest dew point: -2.2 °C on 31 March 2019 at 2:14 PM. This is the lowest monthly and daily dew point for March on record, exceeding the old record of 12 °C on 9 March 2012 at 3:45 PM.

 

Highest dew point: 24.3 °C on 24 March 2019 at 10:12 AM. This is the second lowest monthly maximum dew point on record for March, the lowest since the record low of 23.9 °C in 2013 on 24 March at 1:57 PM, equal tenth highest daily dew point for March and the highest since 24.9 °C on 3 March 2018 at 2:29 PM.

 

Wind Speed – above average wind speed

Maximum Wind Gust: 46 km/hr on 15 March 2019 at 4:06 PM. This is the fourth lowest March maximum wind gust and the lowest since 46.4 km/hr in 2014 on the 13 March at 9:33 AM. The maximum wind gust this month last year was 58.3 km/hr. This is the thirteenth highest daily wind gust on record for March and the highest since 51.8 km/hr on 21 March 2018 at 10:29 AM.

 

Maximum Wind Speed: 28 km/hr on 15 March 2019 at 4:19 PM (Moderate Force Wind). This is the fifth lowest monthly maximum wind speed for March, the lowest since 23.3 km/hr in 2016 on 15 March at 8:35 PM, the twelfth highest daily wind gust on record for March and the highest since 30.7 km/hr on 21 March 2018 at 10:35 AM.

 

Wind Run: 3118.3 km (1355.2 km higher than same month in 2018), 1795 km above average and 73.7 % above average. This is the highest on record for March total wind run exceeding the old record of 1763.1 km in 2018.

 

Monthly Mean Wind Speed: 4.2 km/hr (1.8 km higher than this month in 2018), 2.5 km/hr above average and 83.3 % above average. This is the highest on record for March exceeding the old record of 2.4 km/hr in 2018.

 

Daily Mean Maximum Wind Gust: 26.8 km/hr (7.3 km/hr lower than this month in 2018), 1.1 km/hr below average and 4.1 % below average. This is the fifth lowest daily mean maximum wind speed on record for March and the lowest since 23.9 km/hr in 2012.

 

Daily Mean Maximum Wind Speed: 13.2 km/hr, 6.3 km/hr lower than this month last year, 2.2 km/hr below average and 14.2 % below average. This is the third lowest daily mean maximum wind speed on record for March and the lowest since the current record low of 9.9 km/hr in 2012.

 

Dominant Direction: E (SSE this month last year).

 

Rainfall –well above average rainfall

Monthly Rainfall Total: 236.9 mm (112.7 mm above average) and 190.7 % of the long term average. This total is in decile 9/ 91st percentile which ranks as high and 120.7 mm above the long term median (203.8 % of long term median). This is higher than this month last year which was 190.3 mm, the fourth highest on record and the highest since the record high of 375.4 mm in 2017.

 

The main official sites in the Brisbane area measured average to above average rainfall totals in March. These ranged between 89% and 164% of the long term average. There were 5 sites that ranked as average ranging between 89 and 131 % of the long term total with the lowest total being Amberley with a total of 99 mm which ranked as average (116% of the long term average) with a total of 79.6 mm, whilst the highest total was 202 mm at Beerburrum (115% of the long term average). 4 sites observed rainfall totals that ranked as high and these ranged between 137% and 164 % of the long term average, with most of these being the inland sites. The lowest total of the sites ranking as high was 107.8 mm at Gatton (135% of the long term average) and the highest was recorded by Redcliffe with a total of 219.8 mm (159 % of the long term average and ranks as high). The highest anomaly above the long term average was 164 % above average for Beaudesert with a total of 211.8 mm which ranked as high. Brisbane observed a rainfall total of 181 mm (157% of the long term average) and ranked as very high. Alderley observed its highest total monthly total for March in 25 years. The highest total reported from all the official sites in the Brisbane area was 360 mm at Caloundra Airport.

 

In the Brisbane area, rainfall was mostly over the second half of the month. There was generally little rain early in the month with some isolated showers with low totals. Between the 15th and 18th moderate to locally heavy falls occurred as a result of an upper level trough and surface trough. From the 26th showers and rain occurred across the Brisbane area due to a trough and southerly change. When the remnants of ex-tropical cyclone Trevor moved over southern Queensland there were further moderate falls at the end of the month.

 

Number of Rain Days: 18 days, 6 less than this month last year and 5.6 days above average. This is the equal fifth highest on record and lowest since 17 days in 2017.

 

Highest Daily Total: 83.7 mm on 17 March 2019. This is the ninth highest March daily rainfall on record on daily and monthly basis and the highest since 126 mm in 2017 which occurred on the 31 March. The highest daily total in the Brisbane area of all official sites was 126 mm at Godwin Beach on the 12th March 2019.

 

Monthly Rainfall Total – automatic gauge) 24 hours to 9am: 202.4 mm (34.5 mm less than the site official standard gauge and within 14.6%). Highest daily total of automatic gauge, (24 hours to 9am): 38.6 mm on 18 March 2019, (24 hours from midnight): 59.6 mm on 16 March 2019

 

Note: This automatic gauge for the month of March, fails to meet the accuracy (of +/- 10% of the standard gauge) at -14.6%.

 

In the early morning of the 1st were light showers with 0.4 mm measured and light to moderate showers during the evening. On the 2nd there were light showers in the early hours and early morning with 3.2 mm measured. Showers redeveloped in the evening, followed by light showers in the early hours and early morning on the 3rd with 2.5 mm measured. A brief mid-morning shower, a light to moderate shower in late morning and a light few drops in the late afternoon brought 2.1 mm on the 4th. On the 7th was a mid-evening light shower with 1 mm measured on the 8th. On the 11th was a light early evening light shower, with light showers in the early hours and early morning of the 12th with 1 mm measured on the 12th. Evening brief light showers in the evening of the 14th with 2 nearby thunderstorms produced 0.5 mm on the 15th. A severe thunderstorm with heavy rain was in the mid to late afternoon, followed by mostly light thundery rain in the evening and light rain or drizzle from 9 pm. On the 16th were light rain/ drizzle early, less frequent from early morning and clearing mid-morning. 55.1 mm was measured on the 16th.

 

For the rest of the morning on the 16th was light rain at times. In the early afternoon was light to moderate showers and then frequent evening moderate to heavy showers through to 2 am on the 17th. 83.7 mm was measured on the 17th. Later on the 17th was a moderate shower in the early afternoon and then showers with moderate to heavy falls from mid to late afternoon. In the late afternoon was a mild thunderstorm with heavy rain and light rain until early evening. After early fog on the 18th (Visibility of 500 m at 6:25 am, 400 m at 7:25 am and 800 m at 8 am) clearing around 8 am, 42.3 mm was measured. In the early afternoon was a moderate thunderstorm with brief heavy rainfall and gusty light winds. 8.6 mm was measured on the 19th. On the 22nd was a light shower in the evening with 0.3 mm measured on the 23rd. The 26th saw evening light rain and drizzle at times, with occasional light rain/ drizzle early on the 27th before light rain periods from early morning. 1.2 mm was measured on the 27th. Rain periods continued during the 27th with moderate falls in the late afternoon. Light drizzle eased during the evening, followed by light drizzle and rain in the early hours on the 28th with 20.6 mm measured on the 28th. On the 28th was a midday light shower, light showers in the early to mid-afternoon and brief light showers early on the 29th. This brought 1.5 mm on the 29th. On the 30th were light showers in the early hours with brief heavy falls clearing early. 7.4 mm was measured on the 30th. Light rain at times occurred from the late morning to late afternoon, with 4.5 mm measured on the 31st.

 

There was 3 days with falls of at least 25 mm (1 greater than same month in 2018) with 6 days of less than 1mm (2 less than same month in 2018).

 

Highest rainfall rate was 217.4 mm/hr on the 15 March 2019 at 4:20 PM. This is the highest monthly and daily rainfall rate for March exceeding the previous record high of 148.8 mm/hr on 30 March 2017 at 6:52 PM.

 

The highest hourly rainfall total was 31.2 mm on the 15 March 2019 at 4:34 PM. This is the second highest monthly and daily maximum hourly rainfall and the highest since the current record high of 36.3 mm on 27 March 2018 at 12:10 PM.

 

Number of severe thunderstorms: 1

 

Number of thunderstorms: 3 (Mild: 1, Moderate: 1)

 

Number of thunder days: 7 days

 

Number of nearby storms: 4

 

Severe thunderstorms in the Brisbane area: Nil

Remarks for month:

• Moderately low dew point from 1st to 4th, and early in the day and afternoon of 5th
• Cloudy early on 3rd and 6th clearing during the morning
• Moderately low dew point early on the 6th, moderately high in morning of 7th
• Warm day on 7th and 9th; S to ESE wind change in morning of 7th
• Variable temperature during late morning of 9th and first half of afternoon on 10th
• Very hot day on 11th, thickening cloud cover and thunder to SE at 2:15PM from nearby thunderstorm
• Increasing dew point with sea breeze on 11th with a fall and rise of dew point in the afternoon
• Clearing cloud and a very hot day on the 12th. The temperature rose quickly, and hovering around 40 °C for several hours. Low dew point in morning and low daytime relative humidity
• Very hot and mostly sunny on 13th; low morning dew point followed by SE wind change later in morning
• Warm day on 14th
• Cloudy on 15th, hot and followed by a severe thunderstorm
• The 16th was a cool day and cloudy, with clearing cloud in afternoon and high dew point and relative humidity
• High relative humidity, cloudy and variable temperature on 17th
• Increasing dew point on 18th, easing in afternoon with early fog and an afternoon thunderstorm
• Mostly sunny and hot day on 19th after early mist with low daytime relative humidity
• Hot on 20th and 21st; thunder in late afternoon of 21st with variable temperature during day
• Variable daytime temperature on 22nd and also for relative humidity
• Hot with moderately high dew point at times on 23rd
• Increasing dew point during daytime and mostly sunny and hot on 24th and 25th
• Cloudy on 26th and a cold day on 27th with rain and drizzle
• Cool on the 28th with variable temperature
• Very variable temperature on 29th with moderately low dew point in late afternoon
• Cloudy with high relative humidity on 30th
• On 31st was low point and a cold morning
• 6 Days of Dew during the month: light – (20th, 24th and 25th), Heavy – (18th, 19th and 23rd)

Weather influences

• A firm ridge of high pressure extended along the east Queensland coast and extended moist onshore winds along the coast from a slow moving high pressure system in the Tasman Sea from 1st to 5th
• The ridge and the onshore wind flow started decayed on the 5th and 6th as the high pressure system shifted east over the Tasman Sea
• A coastal trough lied off the east Queensland coast on the 5th and weakened on the 6th bringing some instability along the coast; A upper trough over the interior produced some instability, mostly over the interior of the state
• A coastal trough and SE’ly wind change on the 7th shifted northwards along the south coast, reaching Brisbane in the mid-morning, allowing a high pressure system to extend a ridge in the wake of the trough
• On the 8th a high pressure system shifted further eastwards across the Tasman Sea, maintaining a ridge along the east Queensland coast; this extended instability and onshore winds along the east coast, mostly north of Fraser Island, assisted by an inland surface trough
• On the 9th the inland surface trough introduced warm air while the high pressure system in the Tasman Sea extends a weakening ridge along the east Queensland coast with an easing in moist onshore flow
• The ridge decayed further on the 10th as the high pressure system shifted further eastwards. A slow moving upper trough brought some instability. A slow moving surface trough extended a hot air mass.
• On the 11th a surface trough remained slow moving over the interior and south east inland and maintained hot conditions. The ridge decayed further a high pressure system in the Tasman Sea weakened further. A upper trough brought some instability
• The weak ridge persisted on the 12th, while the inland surface trough remained slow moving which extended a hot and dry air mass. A weak trough shifted through the region with some instability. A weak trough shifted through the region extending a SE’ly wind change in the late evening
• The 13th saw the surface trough remain slow moving and maintained the hot and dry air mass and combine with an upper trough brought some instability. A coastal trough shifted northwards along the southern Queensland coast, followed by a cool Se’ly wind change.
• On the 14th the surface trough remained slow moving and brought unstable conditions in combination with an upper trough
• A surface trough over the interior started to shift westwards on the 15th. Upper troughing extended over southern and central parts and combined with deep moisture and the surface trough to bring unstable conditions. A weak coastal trough shifted northwards along the south coast.
• On the 16th a surface trough remained over the interior and continued to shift westwards. An upper level trough shifted eastwards over southern and south-eastern parts of the state and combined with moist air east of the surface trough to bring unstable conditions over the region particularly.
• On the 17th an upper trough combined with moist air to the east of the surface trough which remained slow moving to extend instability east of the surface trough
• The surface trough remained slow moving over the interior on the 18th while the upper trough shifted east into south-eastern Queensland maintaining the unstable conditions
• On the 19th the surface trough remained over the interior while slowly moving eastwards, while the upper trough shifted east into the Tasman Sea, with the instability persisting east of the surface trough
• The 20th saw the surface trough was slow moving and remained from the northwest to the southeast of Queensland, with some instability to its east. A very weak trough shifted through the south east Queensland also.
• On the 21st the surface trough remained slow moving and combined with moist air to maintain some instability to its east. A trough amplified over the south east Queensland also
• The surface trough cleared the east coast on the 22nd, while a high pressure system extended a ridge along the east coast
• Some instability was maintained over the region due to a weak upper level trough over south east Queensland. A high pressure system extends a weak ridge along the east coast with fine weather
• The ridge continued to remain in place on the 24th. Warm flow started to develop ahead of a surface trough that shifted into the interior
• While the ridge persisted along the east coast on the 25th, the warm wind flow ahead of the surface trough extended the warm air across to the east. In the west of the state, a tropical air mass started to develop further as Ex tropical cyclone Trevor interacted with the surface trough
• On the 26th a weak ridge extends along the east coast of Queensland and combines with Ex tropical cyclone Trevor to draw a very moist and unstable air mass over the state. An upper trough interacted with the Ex tropical cyclone and extended instability across to eastern Queensland. A coastal trough and south-easterly wind change shifted north through the region.
• On the 27th a high pressure system in the Tasman Sea maintained a weak ridge along the Queensland east coast and combined with the ex-tropical cyclone shifting east over the interior to draw a very moist tropical air mass over much of the state. Also an upper trough over the interior shifted eastwards which interacted with ex-tropical cyclone and also a coastal trough shifted northwards through the region
• A weak upper trough shifted eastwards over the region while a ridge maintained a ridge along the east coast which brought some instability. A coastal trough shifted further north into northern parts of the south east Queensland. The weak remains of ex tropical cyclone is combining with a surface trough to bring instability over east and central areas of the state
• The moist tropical air mass remained over the state as a surface trough remain over the interior on the 29th
• On the 30th a surface trough shifted eastwards over the interior and cleared off the southern Queensland coast in the evening, while shifting further north. This is associated with a upper level trough which maintained unstable conditions
• On the 31st a surface and upper level trough cleared the east coast early in the day with unstable conditions contracting north-eastwards. Following the passage of the trough a new high pressure system shifted eastwards over southern Australia and extended a cool and dry air mass

Daily weather notes

• 1/3/19: Partly cloudy with cu and sc clouds with ac in the morning. Light showers in the early morning and brief light to moderate showers during the evening. Moderately low dew point and low in the afternoon before rising in the evening. The temperature fell quickly during the evening with the showers. Light SW to NW winds early, shifting SE to SW from early morning, E to NE from mid morning, S to SE from late afternoon and S to SW in the late evening.
• 2/3/19: Light showers in the early hours and early morning, brief light showers in middle of the day into early afternoon and redeveloping in the evening. Partly cloudy with cu clouds. Moderately low dew point becoming low in the mid afternoon. Light winds of mostly S to SW from early hours, S to ESE from mid morning, E to SE from mid afternoon, SSW to SE from late afternoon and mostly SW to SE winds later in the evening.
• 3/3/19: Light showers in the early hours and early morning. Brief mid morning shower. Light to moderate shower in late morning. Light few drops in late afternoon. Cloudy early with as and sc clouds clearing to partly cloudy skies during the morning with sc and cu clouds with some ac in the late afternoon. The temperature fell briefly at times during the morning. Moderately low dew point early before rising and becoming moderately low from late afternoon. Light W to SW winds shifting SE to E.
• 4/3/19: Fine. Partly cloudy with cu clouds. Moderately low dew point over the entire day. Light SSW to WSW winds at times in the early hours becoming S to SE from early morning, SSE to ESE, S to SE from early evening and becoming calm in the late evening.
• 5/3/18: Fine. Partly cloudy with cu clouds. Moderately low dew point early in the day, in the afternoon and otherwise near average. Variable temperature during the morning. Light SW winds early, shifting S to SE from mid morning and E to SE later in the morning. From mid afternoon winds were SE to ENE and later in the evening winds became variable S to NW.
• 6/3/19: Becoming cloudy with sc and ac early, clearing to partly cloudy with cu clouds from morning. Ci, s and cc clouds from mid afternoon. Moderately low dew point early returning to near average in the morning. Light SSW to W winds early before variable N to SW winds in the early morning and SE to NE from mid morning. In the late afternoon winds were ENE to NE and mostly N to NE in the evening.
• 7/3/19: Fine except for a mid evening light shower. Partly cloudy with sc and cu clouds. Near average dew point becoming moderately high during the morning and falling to near average from late morning. A warm day. Light SSW to W winds in early morning, followed by S to ESE wind change during the morning. Winds became S to SW in the late evening.
• 8/3/19: Fine and partly cloudy with cu clouds. The temperature fell and rose briefly just before 4 pm. SSW to SW winds early in the early hours, shifting E to SE from mid morning, SSE to E from late afternoon and SSE to SW in the late evening.
• 9/3/19: Fine. A warm day. Partly cloudy with cu clouds. Variable temperature during the late morning. Light SW winds early shifting SW to SE during the early morning and SE to NE from mid morning. ENE to NE winds from the late afternoon and NNE to NW winds in late evening.
• 10/3/18: Fine and partly cloudy day with sc and cu clouds from the morning and also cs, ci and cc in the afternoon. Variable temperature during the first half of the afternoon. Light NW to NE in the early morning shifting N to NE and then E to NE from mid morning. In the late afternoon winds were ENE to NE and N to NE in the evening.
• 11/3/19: Very hot day. Fine except for a light early evening shower. Thunder at 2:15 PM from thunderstorm to the se. Partly cloudy with sc and cu with thickening ci, cs and as from morning. Some afternoon cu and cb clouds especially to the south and east with nearby thunderstorms. Near average dew point but rose quickly at midday with the seabreeze with a dip downwards and back upwards in the mid afternoon. Low relative humidity during the day. NE to NW winds and NE to SE from midday.
• 12/3/19: Fine after light showers in the early hours and early morning. Partly cloudy with cu clouds clearing during the morning and cu clouds from the middle of the day. Very hot day with the temperature rising quickly in the morning, falling briefly in the early afternoon and hovering near 40 degrees °C afterwards. Falling dew point during the morning, low by late morning & rising in the evening. A brief rise close to normal in early afternoon. Light and variable winds early, N to NE in the early morning and generally SW to NW winds from mid morning. Some S to SE winds in early afternoon and winds became E to ENE winds in late afternoon and early evening before the wind eased. Low relative humidity, falling quickly in the morning and becoming very low in the middle of the day. A brief spike upwards (with SE'ly wind) in the early afternoon. From the late afternoon the relative humidity rose quickly.
• 13/3/19: °Clear early and mostly sunny day with some sc and cu clouds developing from the morning. A very hot day. Near average dew point, falling during the morning and becoming low and rising to close to average in the afternoon and evening. Low relative humidity before rising during the afternoon, though fell slightly in the mid afternoon. Light and variable winds early before S to SE winds during the morning before the SE'y wind change from the mid morning, becoming S to SE in evening. This wind change slowed the temperature rise from the late morning.
• 14/3/19: Fine until evening brief light showers with 2 nearby thunderstorms. Partly cloudy with cu clouds and cloudy at times. A warm day. Light WSW to S winds early, shifting S to ESE during the morning and ESE to NE from late morning. In the evening winds shifted to N to NE, then SE to SW in the mid evening and N to NE in the late evening.
• 15/3/19: Fine until a severe thunderstorm with heavy rain in the mid to late afternoon, followed by mostly light thundery rain in the evening and light rain or drizzle from 9 pm. Increasing cu clouds during the morning becoming cloudy with cb, ci and as clouds developing in the afternoon. A hot day, a major drop in the temperature with the storm and stable in the evening. Near average dew point increasing in afternoon and falling after the storm. Light and varable N to SW winds early, NE to NW from early morning SN SE to NE in the afternoon. NNW to E moderate winds briefly with the storm before light S to SW from late afternoon and S to SE in the late evening. High relative humidity from late afternoon.
• 16/3/19: A cool day. Light rain/ drizzle early, less frequent from early morning and clearing mid morning. Light rain at times for rest of morning. Early afternoon light to moderate shower. Frequent evening moderate to heavy shower. Cloudy with ns/cu, clearing with cu/ac/ci during early afternoon, before increasing cloud, easing in late afternoon (sc/ac) and thickening clouds in evening. Increasing dew point during the day, moderately high in afternoon and then fell. High relative humidity.
• 17/3/19: Moderate to heavy showers early, clearing by 2am. Moderate shower in the early afternoon. Showers with moderate to heavy falls from mid to late afternoon. Mild thunderstorm with heavy rain in late afternoon and light rain until early evening. Cloudy with cu and ns. Variable temperature from late morning to mid afternoon (falling and then rising) & increasing but close to average dew point at same time. High relative humidity. Light & variable winds and then NW to NE from late afternoon.
• 18/3/19: Early fog (Visibility of 500 m at 6:25 am, 400 m at 7:25 am and 800 m at 8 am) clearing around 8 am. Early afternoon moderate thunderstorm with brief heavy rainfall and gusty light winds. Early st clouds clearing to cu/sc developing during the day. Afternoon as/cb with storm with sc/cu for rest of the day. Increasing but close to average dew point before falling to moderately low in the afternoon and then rising slightly. High relative humidity early and late in the day.
• 19/3/19: Early mist clearing to a fine and mostly sunny day. Some limited cu clouds developing from the morning. A hot day. Near average dew point except for between the late morning and late afternoon when the dew point fell to a moderately low level before returning to near average in late afternoon. Low relative humidity between late morning and late afternoon. Light and variable winds from early morning, mostly S to NW, before shifting NNE to NE from late evening easing in late evening.
• 20/3/19: Fine and a hot day. Partly cloudy with ci clouds in the morning and in the afternoon also cu clouds. Temperature was a little variable from late morning to mid afternoon. Near average dew point but rose and then fell during the morning. Light S to SW winds in the early morning, shifting SE to NE from mid morning, E to NE in mid afternoon and ESE to NE from late afternoon before SW to SE winds later in the evening.
• 21/3/19: Fine. Late evening thunder from nearby thunderstorm. Hot day. Near average dew point though the dew point slightly dropped briefly with the nearby thunderstorm. Variable temperature during middle of the day and into the afternoon. Light SE to SW winds early, shifting E to NNE from early morning, variable S to NE from mid morning and some NE to NW winds before E to SE winds from mid afternoon and easing light and variable N to NE winds in the late evening.
• 22/3/19: Fine except for light shower in the evening. Partly cloudy with cu and sc with some ac. Variable temperature from late morning to afternoon. Variable but near average dew point. Moderately above average relative humidity and was variable from late morning to afternoon. Light and variable winds early with SE to NE from late morning, E to NE from late afternoon and NNW to NE in the evening.
• 23/3/19: Fine. Partly cloudy with cu developing during the day. Ci clouds early and late in the day. A hot day. Moderately high dew point during the early morning before returning to near average in the late morning, before rising to moderately high in the mid afternoon before slowly falling for the rest of the day. Light and variable winds in the early morning becoming mostly NE to NW, ENE to NE sea breeze from mid afternoon and ENE to N in the evening.
• 24/3/19: Fine and mostly sunny. Some cu clouds developing after some early mist. A hot day. Near average dew point increasing during the morning to moderately high before falling from the late morning, before rising slowly in the afternoon and falling slowly in the evening close to average. Light and variable SW to NE from early morning, shifting N to W from midday, E to NE in late afternoon and N to NE in the evening.
• 25/3/19: A hot and fine day. Mostly sunny with early sc and some mist with persistent ci clouds and during the day with some cu clouds. Near average dew point increasing in moderately high during the morning before quickly falling in the mid morning to near average, before sharply rising to moderately high in the mid afternoon and stable for rest of day. Light and variable winds in early morning, N to NE from mid morning, E to NE from mid afternoon and N to NE in the evening.
• 26/3/19: Fine until evening light rain and drizzle at times. Cloudy with cs and as clouds thickening later in the day with some cu clouds. Variable temperature during the middle of the day. Light and variable winds early becoming mostly NE to NE from mid morning, S to SW from early afternoon, variable during the evening and N to WNW in the late evening.
• 27/3/19: Occasional light rain/ drizzle early before light rain periods from early morning with moderate falls in the late afternoon. Light drizzle easing during the evening. Near average dew point falling in the early morning to slightly low, rising during the morning back to near average and falling slowly late in the day. A cold day with the temperature falling or stable from early morning. High relative humidity. Light SW to SSE winds, SW to S from late afternoon.
• 28/3/19: Light drizzle and rain in the early hours, midday light shower and light showers in early to mid afternoon. Variable temperature during the morning and afternoon and a cool day. Moderately low dew point early increasing to near average during the morning and falling slowly from later in the afternoon. High and variable relative humidity. Light S to SW, shifting S to SE during the morning and backing from the late afternoon becoming WSW to SSW in the late evening.
• 29/3/19: Brief light showers early clearing. Partly cloudy with ac and as clouds, sc clouds early in the day and cu during the day. Moderately low dew point early, returning to near average during the morning, then quickly falling to moderately low in the late afternoon and rising in the evening. Very variable temperature during the day. Light SSW to W winds early, shifting ENE to SE from early morning and N to NE from late afternoon.
• 30/3/19: Light showers in the early hours with brief heavy falls clearing early. Light rain at times from late morning to late afternoon. Cloudy with as and ns and cu clouds. Near average dew point falling during the evening and becoming moderately low. High and variable relative humidity. Light and variable winds of mostly NE to NW winds from early with gusty winds in the early morning and late afternoon. Winds in the evening were WNW to N and gusty in the late evening.
• 31/3/19: Sunny with some early sc clouds early and limited cu cloud development during the day. A cold morning. The dew point fell from early in the day, became very low in the early morning, fell further during the day, then rose sharply in the late evening and became stable but low. Relative humidity was slightly below average early before falling during the morning and was low before rising later in afternoon. Light NNW to W winds becoming variable N to W winds and some W to SW winds.

Station records for March 2019

NOTE: This is a summary of all 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.

 

 

Key records for March 2019

NOTE: These records are drawn from automatic data record for this site. See end notes for more information.

 

 

 

Data summary tables for the March 2019