At Ferny Grove overnight temperatures were cooler than normal with several cool nights. Daytime temperatures were however above average. Rainfall was near average during the month at Ferny Grove. Mean relative humidity was below average and mean air pressure was above average. There were 6 thunderstorms (6 thunder days).
Mean minimum temperature: 14.6 ºC, 0.8 ºC below average and 0.8 ºC lower than same month in 2018.
Mean maximum temperature: 27.9 ºC, 0.6 ºC above average and 1.3 ºC higher than same month in 2018.
Mean temperature: 21.2 ºC, 0.1 ºC below average and 0.2 ºC higher than same month in 2018.
Lowest temperature: .2 ºC on 3 October 2019 at 5:33 AM. Same month in 2018 was 9.1 ºC.
Highest temperature: 34.7 ºC at 11:49 AM on 8 October 2019. Same month in 2018 was 34.6 ºC. This is the highest monthly maximum temperature for October since 35.1 ºC in 2014 on 27 October at 3:05 PM
Lowest maximum temperature: 21.3 ºC at 2:52 PM on 12 October 2019. This month in 2018 was 18.6 ºC.
Highest minimum temperature: 19.6 ºC on 8 October 2019 at 12:56 AM. This month in 2018 was 18.7 ºC.
Minimum temperatures saw several periods of cool nights especially in the first half of the month with several warm periods throughout the month. The month started warm at 3 ºC above average on the 1st and a cool period followed between the 3rd and 5th being 4 to 6 ºC below average. The 8th and 9th was 2 ºC and 4 ºC above average respectively before another cool period followed on the 10th to 14th. During this period temperatures were 4 to 5 ºC below average on the 12th and 13th and 2 to 3 ºC below average on the 10th, 11th and 14th. From the 5th temperatures were within 2 ºC of the long term average. The 24th and 25th was 3 ºC below average. The 27th was equal to the average before warming to 3 ºC to 4 ºC above average on the 28th and 29th.
Maximum temperatures in October were generally above average with some cool periods throughout the month. The month started with the first 2 days being 2 to 3 ºC below average. A warm period followed between the 4th and 8th and was 5 ºC on the 5th and 7 ºC on the 7th and 8th when the highest temperature of the month occurred. Cooler temperatures of 2 to 6 ºC below average followed on the 9th to 12th. A warm period followed on the 16th which was 4 ºC above average and 6 ºC above average on the 17th. After cooler temperatures it then warmed to 2 ºC to 3 ºC above average on the 26th and to 28th, easing to 3 ºC below average on the 30th.
Mean minimum grass temperature: 13 ºC (1.5 ºC lower than same month in 2018).
Lowest Minimum Grass Temperature: 7.8 ºC on 3 October 2019 (1.1 ºC lower than same month in 2018). This coincided with the lowest minimum temperature of 9.2 ºC for the month.
Highest Minimum Grass Temperature: 18.3 ºC on 8 October 2019 (0.4 ºC higher than same month in 2018). This coincided with the highest minimum temperature of 19.6 ºC for the month.
Highest Minimum Grass Temperature Depression: 0.3 ºC on 12 October 2019 with a minimum grass temperature of 11.5 ºC and an air temperature of 11.8 ºC.
Lowest Minimum Grass Temperature Depression: 3.1 ºC on 10 October 2019 with a minimum grass temperature of 10.1 ºC and an air temperature of 13.2 ºC.
Mean minimum MSL pressure: 1015.8 hPa (1 hPa lower than same month in 2018).
Mean maximum MSL pressure: MSL Pressure: 1021.2 hPa (1.5 hPa higher than same month in 2018). This is the second highest on record for October.
Mean MSL pressure: 1018.5 hPa (1.8 hPa above average, 1.2 hPa higher than same month in 2018). This is the second highest on record for October.
Lowest MSL pressure: 1006.5 hPa on 8 October 2019 at 3:29 PM. The same month in 2018 saw 1007.9 hPa.
Highest MSL pressure: 1030 hPa on 2 October 2019 at 8:52 AM. The same month in 2018 saw 1027.9 hPa.
Mean minimum relative humidity: 34.6 % (19.4 % lower than same month in 2018 and 4.3 % below average). This is the second lowest on record for October and the lowest since the current record low of 32% in 2009.
Mean maximum relative humidity: 82.7 % (13.6 % lower than same month in 2018 and 2.7 % below average). This is second lowest on record for October and the lowest since the current record low of 77.2 % in 2009.
Mean relative humidity: 58.7 % (16.5 % lower than same month in 2018 and 3.5 % below average). This is the second lowest on record for October and the lowest since the current record low of 54.4% in 2009.
Lowest relative humidity: 13 % on 8 October 2019 at 9:01 PM (14 % lower than this month in 2018). This is the lowest monthly and daily minimum humidity for October on record exceeding the old record of 19 % on 3 October 2009.
Highest relative humidity: 93 % on 20 October 2019 at 6:59 AM (6 % lower than this month in 2018). This is the lowest monthly October maximum humidity on record exceeding the previous record low of 94 % in 2016 on 3 October at 5:33 PM.
Monthly mean minimum dew point: 8.6 ºC (0.7 ºC below average). This is the lowest monthly mean minimum dew point for October on record exceeding the old record of 9.9 ºC in 2016.
Monthly mean maximum dew point: 15.1 ºC (0.3ºC below average). This is the second lowest monthly mean maximum dewpoint for October and the lowest since 10.4 ºC in 2009.
Monthly mean dew point: 11.8 ºC (0.5 ºC below average). This is the second lowest monthly mean dew point for October on record and the lowest since 10.5 ºC in 2009.
Lowest dew point: -1.3 ºC on 8 October 2019 at 9:01 PM. This is the lowest monthly and daily dew point for October on record, exceeding the previous record of -1.2 ºC on 15 October 2014 at 3:15 AM.
Highest dew point: 21.2 ºC on 8 October 2019 at 9:16 AM.
Highest wind gust: 46 km/hr on 17 October 2019 at 4:41 PM. This is the second lowest October maximum wind gust and the lowest since 42.7 km/hr in 2011 on the 2 October at 2:21 PM. The maximum wind gust this month in 2018 was 49 km/hr.
Highest wind speed: 23 km/hr on 17 October 2019 at 3:07 PM (Moderate Force Wind). This is the lowest monthly maximum wind speed for October on record, exceeding the previous record low of 25 km/hr in 2018 on 4 October at 4:26 PM.
Total wind run: 3830.4 km (2131.1 km higher than same month in 2018), 487.1 km above average and 14.6 % above average. This is the highest on record for October total wind run exceeding the previous record of 1699.3 km in 2018.
Mean wind speed: 5.2 km/hr (2.9 km higher than this month in 2018), 1.4 km/hr above average and 36.8 % above average. This is the highest on record for October exceeding the previous record high of 2.9 km/hr in 2013.
Daily Mean Maximum Wind Gust: 28.8 km/hr (3.5 km/hr lower than this month in 2018), 4.1 km/hr above average and 16.5 % above average. This is the fourth lowest daily mean maximum wind speed on record for October and the highest since 34.2 km/hr in 2017.
Daily Mean Maximum Wind Speed: 14.4 km/hr, 2.8 km/hr lower than this month last year, 3.8 km/hr above average and 35.8 % above average. This is the second lowest daily mean maximum wind speed on record for October and the lowest since the current record low of 9.7 km/hr in 2018.
Dominant Direction: NE (E this month last year).
Rainfall total: 48.5 mm, 16.4 mm below average (75.2 % of long term average), 7 mm above the long term median and 108% of the site median. This is lower than this month last year which was 263.7 mm. Automatic rain gauge was 44.2 mm (-8.9 % of manual gauge).
Highest daily rainfall total: 26.7 mm on 12 October 2019.
Number of rain days: 8 days, 12 less than this month in 2018 and 0.4 days below average.
Highest rain fall rate: 140.4 mm/hr on the 19 October 2019 at 11:49 AM. This is the second highest monthly rainfall rate for October and the lowest since 68.4 mm/hr in 2017 on 23 October at 4:30 AM.
Highest hourly rainfall total: 7.2 mm on the 11 October 2019 at 9:12 PM. This is the lowest monthly maximum hourly rainfall since 1.6 mm in 2014 on 14 October at 3:10 AM
There were 12 thunderstorms, with 6 days with thunder, along with 2 nearby thunderstorms.
During the month most rainfall totals were low and brought by brief thunderstorms (some were high-based) or light showers. No rainfall observed after the 20th of the month.
There were 8 days of morning dew.
Smoke haze on some days caused by continued dangerous bushfire conditions across the region
Above average air pressure was a result of persistent a high pressure ridge in between the passage of trough with dry air masses with low levels of moisture.
After a dry 12 month period long term rainfall totals are now in the lowest 10% of records.
For September there were 7 existing records exceeded, along with 8 records that was highest/lowest in at least 5 years.
For more detailed analysis refer to the “Monthly Meteorological Report for October 2019”.
Summary of Averages and Extremes for October 2019 for Ferny Grove, Brisbane, Queensland, Australia |
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|
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 |
14.6 |
27.9 |
21.2 |
13.3 |
13.0 |
1.6 |
34.6 |
82.7 |
58.7 |
1015.8 |
1021.2 |
1018.5 |
11.8 |
28.8 |
14.4 |
1.6 |
Min |
9.2 |
21.3 |
16.6 |
6.4 |
7.8 |
0.0 |
13 |
67 |
50 |
1006.5 |
1014.1 |
1010.3 |
5.2 |
19.0 |
9.0 |
|
Max |
19.6 |
34.7 |
27.2 |
21.0 |
18.3 |
0.0 |
64 |
93 |
78 |
1026.5 |
1030.0 |
1028.2 |
21.2 |
46.0 |
23.0 |
26.7 |
Total |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
48.1 |
Summary for October 2019 from long term average for Ferny Grove, Brisbane, Queensland, Australia |
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|
Temperature |
Relative Humidity |
MSL Pressure |
Dew Point |
Wind Gust |
Wind Speed |
Rainfall |
Rainfall as Fraction of monthly average (%) |
Average |
-0.1 |
-3.5 |
+1.8 |
-0.5 |
+4.1 |
+3.8 |
-16.0 |
75.2 |
Min |
-0.8 |
-4.3 |
|
-0.7 |
|
|
|
|
Max |
+0.6 |
-2.7 |
|
-0.3 |
|
|
+21.7 |
|
Monthly averages and extremes for Year of 2019 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-19 |
20.8 |
32.0 |
18.5 |
34.3 |
26.4 |
-0.6 |
+0.9 |
+0.1 |
10.4 |
-134.6 |
9 |
Feb-19 |
20.9 |
31.2 |
16.8 |
36.7 |
26.0 |
-0.2 |
+0.6 |
+0.2 |
39.8 |
-122.0 |
13 |
Mar-19 |
20.4 |
31.4 |
14.1 |
41.1 |
25.9 |
+0.2 |
+2.2 |
+1.2 |
236.9 |
+112.7 |
18 |
Apr-19 |
16.4 |
26.7 |
14.1 |
30.5 |
21.6 |
-0.5 |
+0.0 |
-0.2 |
64.9 |
-28.9 |
16 |
May-19 |
13.1 |
24.7 |
4.4 |
28.0 |
18.9 |
-0.2 |
+0.9 |
+0.4 |
41.4 |
-61.6 |
16 |
Jun-19 |
10.9 |
22.5 |
4.4 |
27.7 |
16.7 |
-0.4 |
+1.4 |
+0.5 |
35.9 |
-26.0 |
15 |
Jul-19 |
9.5 |
23.5 |
5.1 |
27.2 |
16.5 |
-0.2 |
+2.1 |
+0.9 |
17.6 |
-15.9 |
10 |
Aug-19 |
9.7 |
24.3 |
6.2 |
28.6 |
17.0 |
+0.0 |
+1.2 |
+0.6 |
11.2 |
-25.3 |
4 |
Sep-19 |
12.1 |
28.2 |
6.9 |
35.3 |
20.2 |
-0.7 |
+2.3 |
+0.8 |
2.8 |
-30.4 |
3 |
Oct-19 |
14.6 |
27.9 |
9.2 |
34.7 |
21.2 |
-0.8 |
+0.6 |
-0.1 |
48.1 |
-16.4 |
8 |
YTD |
14.8 |
27.2 |
4.4 |
41.1 |
21.0 |
-0.3 |
+1.2 |
+0.4 |
509.0 |
-348.5 |
112 |
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 2019, Produced 12/11/19. 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, while. 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”.