Overnight temperatures were above average and daytime temperatures were well above average at Ferny Grove in autumn. Record high temperatures of over 40 ºC were observed at Ferny Grove. Rainfall was near average at Ferny Grove. Mean relative humidity was well below average, mean air pressure was well above average, mean dew point was below average and wind speed was near average. There were 3 thunderstorms.
Seasonal mean minimum temperature: 16.6 ºC, 0.9 ºC above average and 1 ºC higher than same season in 2018. This is the second highest on record and the highest since the record high in 2010 of 16.8 ºC.
Seasonal mean maximum temperature: 27.6 ºC, 1.4 ºC above average and 0.2 ºC higher than in 2018. This is the second highest on record and the highest since the record high of 28.6 ºC in 2016.
Seasonal mean temperature: 22.1 ºC, 1.1 ºC above average and 0.6 ºC higher than same season in 2018. This is the lowest since the current record high of 22.5 ºC in 2016 and the second highest on record.
Lowest temperature: 4.4 ºC on 31 May 2019 at 6:14 AM. Same month and season in 2018 was 6 ºC. This is the equal lowest monthly and daily minimum temperature for May on record, equalling 4.4 ºC in 2014 on the 26 May at 5:55 AM. For autumn this is the equal lowest minimum temperature on record also.
Highest temperature: 41.1 ºC at 2:43 PM on 12 March 2019. Same month in 2018 was 35.5 ºC and this season last year was 35.5 ºC. 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 ºC on 5 March 2015 at 3:00 PM. For autumn this is the highest seasonal and daily maximum temperature on record and exceeded the previous record of 37.3 ºC in 2015 on 5 March at 3:00 PM.
Lowest maximum temperature: 20.6 ºC at 2:04 PM on 31 May 2019. This month and season in 2018 was 21.8 ºC.
Highest minimum temperature: 22.9 ºC on 21 March 2019 at 4:39 AM. This month and season in 2018 was 24.0 ºC.
In March 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 ºC above average on 4th and 5th. A warm spell followed between the 6th and 12th and was 2 to 3 ºC above average each day. The 13th, however was 1 ºC above average and the 14th was 4 ºC above average. The 15th to 18th was 1 ºC above average, while the 19th was 1 ºC below average and the 20th on average. Another warm spell followed from the 21st to 22nd of 2 to 4 ºC above average, reducing to 1 to 2 ºC above average during 23rd to 25th. On average minimum temperatures then followed on the 28th and 29th, 3 ºC above average on the 30th and then 5 ºC below average on the 31st.
At Ferny Grove during April minimum temperature were predominately above average, though there was a period of cool nights during the middle of the month and at the end of the month. The 1st was 2 ºC below average, close to average on the 2nd and followed by nights of 1 to 2 ºC above average between the 3rd and 7th. The 8th and 9th was on average, warming to 1 ºC above average on the 10th and 2 ºC above average on the 11th. A cool period followed between the 12th and 17th being 1 to 2 ºC below average. The 18th was on average before a warm period followed between the 19th and 26th. Except for the 24th which was on average minimum temperatures were 2 ºC above average and 3 ºC above average on the 20th and 21st, and easing to 1 ºC above average on the 26th. Below average temperatures followed at the end of the month at 1 ºC below average except for the 28th which was on average.
Minimum temperatures were above average during much of the month, especially at the start of the month. Also there were some cool nights during the month but it was predominately warm. The month started with above average temperatures being 6 ºC to 7 ºC above average during the 1st to 4th, except for 4 ºC above average on the 3rd. It was then cooler with the 5th to 8th being 1 ºC to 2 ºC below average and the 8th was near average. The 9th was 3 ºC below average, while the 11th was 1 ºC above average and the 12th was 4 ºC below average. A period of above average temperatures followed between the 13th and 21st of 3 ºC to 4 ºC above average, though it was 2 ºC above average on the 18th and 19th. The 22nd, 24th and 26th was near average and the 23rd and 25th was 1 ºC below average. From 27th a cool period followed with the 27th being 2 ºC below average, the 28th 3 ºC below average, the 29th 1 ºC below average, the 30th was 6 ºC below average and the lowest temperature of the month of 4.4 ºC occurred on the 31st and was 8 ºC below average.
Maximum temperatures in March 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 ºC above average, the 6th and 7th was 4 ºC above average and easing to 2 ºC above average on the 8th. From the 9th the heat increased with 9th being 4 ºC above average, the 10th was 6 ºC above average, the 11th was 10 ºC above average (38 ºC)and 12th was 13 ºC above average (41.1 ºC). It eased to 9 ºC above average on the 13th (37.1 ºC), 3 ºC above average on the 14th and 7 ºC above average on the 15th. It cooled to 3 ºC below average on the 16th and 2 ºC below average on the 17th. Another period of heat returned between the 19th and 26th and was 4 to 7 ºC above average. The 22nd however was 1 ºC above average and the 26th was 3 ºC above average. From the 27th it was much cooler being 7 ºC below average on the 27th, 4 ºC below average on 28th, on average on 29th and 31st and 1 ºC below average on the 30th.
Maximum temperatures during April at Ferny Grove were generally close to or below average with several above average days mostly early in the month. The first two days were close to average and cooled to 2 ºC below average on the 3rd. A warm period followed between the 4th and 10th with the 4th to 6th being 1 ºC above average, the 7th to 9th was 3 to 4 ºC above average and the 10th was 1 ºC above average. Then the 11th to 12th was 1 to 2 ºC below average, close to average on the 14th to 17th and 1 ºC below average on the 16th. The 18th was 1 ºC above average, the 19th was close to average and followed by another cool period from the 20th to 25th. The 20th was 3 ºC below average, the 21st and 22nd was 1 ºC below average, the 23rd was 4 ºC below average and the 24th was 1 ºC below average. The 25th was close to average before warming to 1 ºC above average on the 26th and 28th and 2 ºC above average on the 27th. The 29th and 30th was 3 ºC below average.
During May maximum temperatures were above average on most days with very few temperatures that were near or below average. The month started with a warm period until the 10th except for the 4th being near average. During these days maximum temperatures were 2 ºC to 3 ºC above average, increasing to 4 ºC to 5 ºC above average on the 8th to 10th. It then cooled to 1 ºC below average on the 11th, 1 ºC above average on the 12th and close to average on the 13th. The 14th to 16th was 1 ºC to 2 ºC above average cooling to close to average on the 17th and 18th. The 19th was 2 ºC above average and the 20th and 21st was 1 ºC above average. The 23rd to 25th was 1 ºC above average, warming to 4 ºC to 5 ºC on the 26th and 27th. The 28th was 1 ºC below average, close to average on the 29th and 30th and 3 ºC below average on the 31st.
Seasonal Average Minimum Grass Temperature: 15.4 ºC (0.1 ºC higher than same season in 2017)
Lowest minimum grass temperature: 1.8 ºC on 31 May 2019 (2.1 ºC lower than same month in 2018). This coincided with the lowest minimum temperature of 4.4 ºC for the month.
Highest minimum grass temperature: 21.8 ºC on 30 March 2019 (0.5 ºC lower than same month in 2018).
Highest Minimum Grass Temperature Depression: 3.0 ºC on 29 May 2019 with a minimum grass temperature of 8.4 ºC and an air temperature of 11.4 ºC.
Lowest Minimum Grass Temperature Depression: 0.3 ºC on 17 March 2019 with a minimum grass temperature of 20 ºC and an air temperature of 19.7 ºC.
Seasonal Mean Minimum Pressure: 1016.7 hPa (1.5 hPa higher than same season in 2018). This is the highest on record exceeding the previous record high of 1015.7 hPa in 2016.
Seasonal Mean Maximum Pressure: 1021 hPa (1.6 hPa higher than same season in 2018). This is the highest on record exceeding the previous record high of 1020 hPa in 2014.
Seasonal Mean Pressure: 1018.9 hPa (2.2 hPa above average) and 1.6 hPa higher than same season in 2018. This is the highest on record exceeding the previous record high of 1017.9 hPa in 2014.
Lowest Seasonal MSL Pressure: 1004 hPa on 12 March 2019 at 4:20 PM. The same month in 2018 saw 1007.3 hPa and this season in 2018 was 1007.3 hPa.
Seasonal Highest MSL Pressure: 1028.6 hPa on 19 May 2019 at 8:44 AM. The same month in 2018 saw 1028 hPa and same season in 2018 saw 1028 hPa.
Seasonal Mean Minimum Relative Humidity: 46.2% (9.6 % lower than same season in 2017-18 and 11.5% below average). This is the lowest on record exceeding the previous record of 52% in 2016.
Seasonal Mean Maximum Relative Humidity: 88.6% (5.8% lower than same season in 2017-18 and 2.7% below average). This is the lowest on record with the old record being 88.1% in 2015.
Seasonal Mean Relative Humidity: 67.4 % (7.7 % lower than same season in 2018 and 7.1 % below average). This is lowest on record beating the previous record of 71.2 % in 2015.
Lowest Seasonal Humidity: 7 % on 31 May 2019 at 2:05 PM (27 % lower than this month in 2018 and 25% lower than same season in 2018). This is the lowest monthly and daily minimum humidity for May on record and the lowest minimum relative humidity for autumn on a seasonal and daily basis exceeding the old record of 26 % on 25 May 2016 at 1:21 PM.
Seasonal Highest Humidity: 97% on 18 March 2019 at 7:59 AM (1% lower than this month in 2018). For autumn this is the lowest maximum relative humidity on record, exceeding the previous record low of 98% on 2018 on the 1 March at 7:04 AM.
Seasonal mean minimum dew point: 12 ºC (2.2 ºC below average). This is the lowest seasonal mean minimum dew point on record for autumn, exceeding the previous record low of 13.2 ºC in 2012.
Seasonal mean maximum dew point: 18.2 ºC (0.1 ºC above average). This is the lowest for autumn since 18 ºC in 2013.
Seasonal mean dew point: 15.1 ºC (1.1 ºC below average). This is the lowest seasonal mean dew point on record, exceeding the previous record of 15.6 ºC in 2013.
Lowest dew point: -16.7 ºC on 31 May 2019 at 2:10 PM. This is the lowest monthly dew point for May and for autumn, exceeding the previous record of 0.3 ºC on 11 May 2018 at 11:50 AM.
Highest dew point: 24.3 ºC on 24 March 2019 at 10:12 AM. This is the second lowest monthly maximum dew point on record for March and seasonally for autumn, the lowest since the record low of 23.9 ºC in 2013 on 24 March at 1:57 PM, equal tenth highest daily dew point for March and the highest since 24.9 ºC on 3 March 2018 at 2:29 PM.
Maximum Wind Gust: 52 km/hr on 11 May 2019 at 12:49 AM. The maximum wind gust this month and season in 2018 was 82.9 km/hr.
Maximum Wind Speed: 28 km/hr on 15 March 2019 at 4:19 PM (Moderate Force Wind). This season in 2018 was 44.5 km/hr.
Seasonal Wind Run: 8205.2 km. This is the highest on record exceeding the old record in 2018 of 4351.5 km. This is 4677.5 km above average and 130 % above average.
Seasonal Mean Wind Speed: 3.0 km/hr (3.5 km/hr higher than this season in 2017-18, 2.2 km/hr above average and 137.5% above average and approx. 2% below average accounting for measuring equipment changes) and the highest on record, with the old record being 2 km/hr in 2018.
Daily Mean Maximum Wind Gust: 24.9 km/hr (6.7 km lower than this season in 2017-18), 1 km/hr below average and 3.9 % below average.
Daily Mean Maximum Wind Speed: 12.2 km/hr, 4.8 km/hr lower than this month last year, 2 km/hr below average and 8.5 % below average. This is the lowest for autumn since the current record low of 9.1 km/hr in 2012.
Dominant Direction: S (S this season in 2018).
Rainfall
Rainfall total: 343.2 mm, 22.2 mm above average (106.1 % of long term average), 45.1 mm above the long term median and 146 % of the site median. This is the tenth highest autumn rainfall on record and ranks as decile 9 /89th percentile and as high. This is lower than this season in 2018 which was 277.8 mm. Automatic rain gauge was 304 mm (-12.9 % of manual gauge).
Highest daily rainfall total: 83.7 mm on 17 March 2019.
Number of rain days (0.1 mm or greater): 50 days, equal to same season in 2018 and 21.6 above average.
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. For autumn this is the highest seasonal rain rate, exceeding the previous record high of 148.8 mm/hr on 30 March 2017 at 6:52 PM.
Highest hourly rainfall 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. For autumn this is the third highest seasonal maximum hourly rainfall, the lowest since 30 mm in 2017 on 30 March at 7:07 PM, the third highest hourly rainfall on daily basis and the highest since 36.3 mm on 27 March 2018 at 12:10 PM.
There were 3 thunderstorms, with 9 days with thunder, along with 5 nearby thunderstorms.
March
There was 6 days of morning dew.
High temperatures were a major aspect during the month with several hot days during the middle of the month. On the 12th the temperature reached 41.1 ºC and then hovered near 40 ºC for several hours.
Persistent low pressure troughs over much of the month brought instability and rainfall and also a higher number of warm to hot day than normal.
There was 5 days of morning dew.
High pressure ridge pattern brought onshore winds and showers during much of the month.
There was 13 days of morning dew.
High pressure ridge pattern brought onshore winds and showers during much of the month.
For the season there were 44 existing records exceeded, along with 26 records that were highest/lowest in at least 5 years.
For more detailed analysis refer to the “Seasonal Meteorological Report of autumn 2019”.
Summary of Averages and Extremes for autumn 2019 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 |
March |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Average |
20.4 |
31.4 |
25.9 |
11.0 |
19.4 |
1.0 |
45.6 |
89.8 |
67.7 |
1012.2 |
1017.1 |
1014.7 |
18.6 |
26.8 |
13.2 |
7.6 |
Min |
14.1 |
21.0 |
21.0 |
0.1 |
11.9 |
2.3 |
12 |
80 |
49.5 |
1004.0 |
1010.1 |
1007.0 |
5.7 |
14.0 |
6.0 |
|
Max |
22.9 |
41.1 |
31.3 |
19.7 |
21.8 |
0.3 |
84 |
97 |
89.5 |
1019.9 |
1022.9 |
1021.4 |
24.3 |
46.0 |
28.0 |
83.7 |
Total |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
236.9 |
April |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Average |
16.4 |
26.7 |
21.6 |
10.3 |
15.3 |
1.1 |
51.4 |
90.5 |
70.9 |
1018.9 |
1022.8 |
1020.9 |
15.9 |
24.6 |
11.7 |
2.2 |
Min |
14.1 |
23.3 |
19.2 |
5.2 |
12.8 |
2.0 |
28 |
74 |
57.0 |
1013.7 |
1019.1 |
1017.0 |
7.0 |
14.0 |
9.0 |
|
Max |
19.0 |
30.5 |
23.5 |
14.3 |
17.8 |
0.4 |
85 |
95 |
90.0 |
1022.8 |
1026.0 |
1024.4 |
22.2 |
37.0 |
15.0 |
28.4 |
Total |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
64.9 |
May |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Average |
13.1 |
24.7 |
18.9 |
11.6 |
11.6 |
1.5 |
41.7 |
85.6 |
63.6 |
1019.0 |
1023.1 |
1021.1 |
10.8 |
23.2 |
11.6 |
1.3 |
Min |
4.4 |
20.6 |
12.5 |
4.3 |
1.8 |
3.0 |
7 |
51 |
36.5 |
1011.3 |
1016.5 |
1013.9 |
-16.7 |
12.0 |
6.0 |
|
Max |
19.4 |
28.0 |
22.7 |
17.8 |
18.0 |
0.5 |
75 |
95 |
84.5 |
1025.3 |
1028.6 |
1026.9 |
20.7 |
52.0 |
26.0 |
10.3 |
Total |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
41.4 |
Season |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Average |
16.6 |
27.6 |
22.1 |
11.0 |
15.4 |
1.2 |
46.2 |
88.6 |
67.4 |
1016.7 |
1021.0 |
1018.9 |
15.1 |
24.9 |
12.2 |
3.7 |
Min |
4.4 |
20.6 |
12.5 |
0.1 |
1.8 |
3.0 |
7 |
51 |
36.5 |
1004.0 |
1010.1 |
1007.0 |
-16.7 |
12.0 |
6.0 |
|
Max |
22.9 |
41.1 |
31.3 |
19.7 |
21.8 |
0.3 |
85 |
97 |
90.0 |
1025.3 |
1028.6 |
1026.9 |
24.3 |
52.0 |
28.0 |
83.7 |
Total |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
343.2 |
Summary for autumn 2019 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 (%) |
||
March |
|
|
|
|
|
|
|
|
||
Average |
+2.3 |
-8.3 |
-0.6 |
-0.9 |
-0.3 |
-6.3 |
+112.7 |
190.7 |
||
Min |
+1.7 |
-14.0 |
|
-2.3 |
|
|
|
|
||
Max |
+3.0 |
-2.5 |
|
0.5 |
|
|
+193.5 |
|
||
April |
|
|
|
|
|
|
|
|
||
Average |
+0.1 |
-4.1 |
+4.4 |
-0.4 |
-0.3 |
-4.4 |
-28.9 |
69.2 |
||
Min |
+0.4 |
-7.0 |
|
-0.9 |
|
|
|
|
||
Max |
-0.1 |
-1.2 |
|
+0.1 |
|
|
+36.3 |
|
||
May |
|
|
|
|
|
|
|
|
||
Average |
+1.0 |
-8.9 |
+2.8 |
-1.9 |
-0.3 |
-3.7 |
-61.6 |
40.2 |
||
Min |
+0.7 |
-13.4 |
|
-3.4 |
|
|
|
|
||
Max |
+1.4 |
-4.4 |
|
-0.4 |
|
|
-1.3 |
|
||
Season |
|
|
|
|
|
|
|
|
||
Average |
1.1 |
-7.1 |
2.2 |
-1.1 |
-0.3 |
-4.8 |
+22.2 |
106.1 |
||
Min |
0.9 |
-11.5 |
- |
-2.2 |
- |
- |
- |
- |
||
Max |
1.4 |
-2.7 |
- |
0.1 |
- |
- |
- |
- |
||
Monthly averages and extremes for autumn 2019 to Date for Ferny Grove, Brisbane, Queensland, Australia |
||||||||||||
|
Temperature |
Temperature from Long Term Avg. |
Rain total |
Rain Anomaly |
Rain days |
|||||||
|
Avg Min |
Avg Max |
Low Min |
High Max |
Average |
Min |
Max |
Average |
|
|
|
|
Mar-19 |
20.4 |
31.4 |
14.1 |
41.1 |
25.9 |
+1.7 |
+3.0 |
+2.3 |
236.9 |
112.7 |
18 |
|
Apr-19 |
16.4 |
26.7 |
14.1 |
30.5 |
21.6 |
+0.4 |
-0.1 |
+0.1 |
64.9 |
-30.8 |
16 |
|
May-19 |
13.1 |
24.7 |
4.4 |
28.0 |
18.9 |
+0.7 |
+1.4 |
+1.0 |
41.4 |
-61.6 |
16 |
|
Season |
16.6 |
27.6 |
4.4 |
41.1 |
22.1 |
+0.9 |
+1.4 |
+1.1 |
343.2 |
+6.8 |
50 |
|
Data copyright Ferny Grove Weather 2019, Produced 22/8/2019. 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. Data measured with low accuracy equipment, mostly replaced with professional moderate accuracy equipment from October 5 except for daily rainfall which is measured using non-professional equipment with 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 effective October 5 this is the 24 hours from midnight. 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 is same to the official time standards and measured in degrees C. 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 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.
Dew Point, Average Wind Speed, Dominant Wind Direction, Wind Run, Rain Rate and Hourly Rain are measured automatically over a 24 hour period starting at midnight and recorded for that day. This started on the 6 October 2011. Until replaced from 5 October 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. However the automatic record for some data may be used if data is not available/ not suitable.
Long term averages are based on all available long period past measurements. 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. Long term average for rainfall is based on 1987 to 2017 average from the station record.
The Fraction of monthly average expresses how much has fallen in respect to the long term average listed as a percentage.