Brisbane Metro in spring 2009: 

  • Below average rainfall for most areas.
  • Day time temperatures above average.
  • A severe duststorm event on the 23rd September. 

Duststorms

An exceptional duststorm developed over the interior during the 22nd of September with very marked reductions in visibility in the thick dust that reached the Brisbane area during the 23rd. Transport services were interrupted, particularly the the river traffic and aircraft operations.

Another frontal passage on the 26th and 27th triggered duststorms again, particularly over western districts.  This event was less dramatic but again brought widespread dust to the east coast.

Rainfall

Rainfall was generally lower than the amount normally received during spring for most locations.  

The main event contributions to the spring total were during the 1st week in September, on the 12th and 13th October and later in the same month and finally during thunderstorms and the passgae of an upper trough in early in November.  Some locations also recorded useful falls during thunderstorms late in November.

The wettest overall was 193.0 mm at Amberley AMO, followed by 150.6 mm at Redcliffe, followed by 146.4 mm at Logan City Water Treatment.

The driest overall was 105.4 mm at Brisbane Aero, followed by 108.4 mm at Archerfield Airport, followed by 112.2 mm at Brisbane.

The wettest single day 67.2 mm at Amberley AMO on 6 Nov, followed by 62.0 mm at Redcliffe on 27 Oct, followed by 58.8 mm at Brisbane Aero on 27 Oct.

See a map of total rainfall. See a map of rainfall deciles.

Maximum temperatures

Maximum temperatures were above the spring average at most locations with late November being well above average.  

The 17th of November was also particularly hot as winds turned offshore with the approach of a front. Amberley recorded 40.3 °C, this being only the 2nd time since 1996 that Amberley has cracked 40 °C in November. On the 29th of November 2006 they recorded 40.5 °C.

The hottest day was 40.3 °C at Amberley AMO on 17 Nov, followed by 39.0 °C at Amberley AMO on 29 Nov, followed by 38.1 °C at Amberley AMO on 4 Nov.

The warmest days on average were 29.5 °C at Amberley AMO, followed by 28.4 °C at Archerfield Airport, followed by 28.2 °C at Logan City Water Treatment.

The coolest days on average were 26.3 °C at Redcliffe, followed by 26.8 °C at Brisbane Aero, followed by 28.0 °C at Brisbane.

The coldest day was 20.7 °C at Logan City Water Treatment on 11 Oct, followed by 20.9 °C at Redcliffe on 11 Oct, followed by 21.2 °C at Redcliffe on 1 Sep, followed by 21.2 °C at Amberley AMO on 11 Oct.

Some sites had their highest spring mean daily maximum temperature for at least 20 years. See a map of mean maximum temperatures. See a map of maximum temperature anomalies.

Minimum temperatures

Minimum temperatures were close to the spring average with no frosts reported.

The coldest night was 0.0 °C at Logan City Water Treatment on 8 Sep, followed by 1.7 °C at Amberley AMO on 1 Sep, followed by 2.8 °C at Amberley AMO on 29 Sep.

The coolest nights on average were 12.3 °C at Amberley AMO, followed by 14.6 °C at Archerfield Airport, followed by 15.1 °C at Logan City Water Treatment.

The warmest nights on average were 16.9 °C at Redcliffe, followed by 16.2 °C at Brisbane, followed by 15.6 °C at Brisbane Aero.

The warmest night was 24.0 °C at Logan City Water Treatment on 29 Nov, followed by 24.0 °C at Redcliffe on 29 Nov, followed by 23.9 °C at Brisbane Aero on 20 Nov, followed by 23.9 °C at Brisbane on 29 Nov, followed by 23.8 °C at Brisbane Aero on 29 Nov.

See a map of mean minimum temperatures. See a map of minimum temperature anomalies.

Wind

Thunderstorms were the cause of the highest wind gusts.

The strongest wind gust was 93 km/h at Brisbane on 13 Oct, followed by 83 km/h at Redcliffe on 17 Nov, followed by 76 km/h at Amberley AMO on 5 November.

Further information

Media
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Extremes in spring 2009
Hottest day 40.3 °C at Amberley AMO on 17 Nov
39.0 °C at Amberley AMO on 29 Nov
38.1 °C at Amberley AMO on 4 Nov
Warmest days on average 29.5 °C at Amberley AMO
28.4 °C at Archerfield Airport
28.2 °C at Logan City Water Treatment
Coolest days on average 26.3 °C at Redcliffe
26.8 °C at Brisbane Aero
28.0 °C at Brisbane
Coldest day 20.7 °C at Logan City Water Treatment on 11 Oct
20.9 °C at Redcliffe on 11 Oct
21.2 °C at Redcliffe on 1 Sep
21.2 °C at Amberley AMO on 11 Oct
Coldest night 0.0 °C at Logan City Water Treatment on 8 Sep
1.7 °C at Amberley AMO on 1 Sep
2.8 °C at Amberley AMO on 29 Sep
Coolest nights on average 12.3 °C at Amberley AMO
14.6 °C at Archerfield Airport
15.1 °C at Logan City Water Treatment
Warmest nights on average 16.9 °C at Redcliffe
16.2 °C at Brisbane
15.6 °C at Brisbane Aero
Warmest night 24.0 °C at Logan City Water Treatment on 29 Nov
24.0 °C at Redcliffe on 29 Nov
23.9 °C at Brisbane Aero on 20 Nov
23.9 °C at Brisbane on 29 Nov
23.8 °C at Brisbane Aero on 29 Nov
Wettest overall 193.0 mm at Amberley AMO
150.6 mm at Redcliffe
146.4 mm at Logan City Water Treatment
Driest overall 105.4 mm at Brisbane Aero
108.4 mm at Archerfield Airport
112.2 mm at Brisbane
Wettest day 67.2 mm at Amberley AMO on 6 Nov
62.0 mm at Redcliffe on 27 Oct
58.8 mm at Brisbane Aero on 27 Oct
Highest wind gust 93 km/h at Brisbane on 13 Oct
83 km/h at Redcliffe on 17 Nov
76 km/h at Amberley AMO on 5 Nov

Highest spring mean daily maximum temperature for at least 20 years
Mean daily maximum
temperature
for spring 2009 (°C)
Most recent higher
for spring
Years since
higher
Average for
spring
Archerfield Airport 28.4 28.5 in 1988 20 26.7



Summary statistics for spring 2009
Maximum temperatures
for spring
(°C)
Minimum temperatures
for spring
(°C)
Rainfall
for spring
(millimetres)
Mean for
spring
2009
Diff
from
average
Highest for
spring
2009
Mean for
spring
2009
Diff
from
average
Lowest for
spring
2009
Total for
spring
2009
Average
for
spring
Rank of
spring
2009
Fraction of
spring
average
Moreton South Coast (district 40)
Amberley AMO 29.5 +1.9 40.3 17 Nov 12.3 -0.8 1.7 1 Sep 193.0 189.0 average 102%
Archerfield Airport 28.4 +1.7 38.0 17 Nov 14.6 +0.6 4.9 1 Sep 108.4 214.1 low 51%
Brisbane* 28.0 +2.0  35.0 13 Oct 16.2 +0.6  8.5 1 Sep 112.2 218.5 low 51%
Brisbane Aero* 26.8 +1.2 34.8 3 Oct 15.6 +0.2 5.2 1 Sep 105.4 225.8 low 47%
Logan City Water Treatment 28.2 +2.0 37.5 17 Nov 15.1 +0.3 0.0 8 Sep 146.4 227.4 low 64%
Redcliffe* 26.3 +1.0  34.7 3 Oct 16.9 +0.6  8.9 1 Sep 150.6 203.4 low 74%

Notes

A Seasonal Climate Summary is prepared to list the main features of the weather in Brisbane Metro using the most timely and accurate information available on the date of publication; it will generally not be updated. Later information, including data that has had greater opportunity for quality control, will be presented in the Monthly Weather Review, usually published in the fourth week of the month.

This statement has been prepared based on information available at 10 am on Tuesday 1 December 2009. Some checks have been made on the data, but it is possible that results will change as new information becomes available.

Averages are long-term means based on observations from all available years of record, which vary widely from site to site. They are not shown for sites with less than 10 years of record, as they cannot then be calculated reliably.
The median is sometimes more representative than the mean of long-term average rain.

*  Nearby locations with a long term average are used for comparison.

The Rank indicates how rainfall this time compares with the climate record for the site, based on the decile ranking (very low rainfall is in decile 1, low in decile 2 or 3, average in decile 4 to 7, high in decile 8 or 9 and very high is in decile 10).
The Fraction of average shows how much rain has fallen this time as a percentage of the long-term mean.

Further information

Media
(03) 9669 4057
Enquiries