Brisbane Metro in 2009

Rainfall

The wettest overall was 1275.5 mm at Logan City Water Treatment, followed by 1166.2 mm at Redcliffe, followed by 1157.8 mm at Brisbane Aero.

The driest overall was 903.1 mm at Amberley AMO, followed by 1045.8 mm at Archerfield Airport, followed by 1072.4 mm at Brisbane.

The wettest single day 150.8 mm at Redcliffe on 20 May, followed by 140.0 mm at Amberley AMO on 21 May, followed by 118.6 mm at Logan City Water Treatment on 3 Apr.

At the beginning of April a surface trough was located off the southern coast of Queensland, with a low embedded in this trough. Aided by an upper level low pressure system the combination produced areas of moderate to heavy falls over the southeast coast region.

The most significant rainfall that occurred in May was about the greater southeast Queensland area from the 19th to 22nd May. Early on the 20th, a low formed near Cape Moreton and moved slowly southwest over the Brisbane area. Near and on the southern side of this low, very heavy rain and gale force winds were observed. An intense upper level low was the main driving force for this significant rainfall. Widespread areas of rain fell over the southeast of the state, with locally heavy falls and isolated thunderstorms.

Maximum temperature

The hottest days occurred at Amberley AMO, with 40.3 °C at on 17 Nov, followed by 39.7 °C on 9 Dec, followed by 39.0 °C on 29 Nov.

The warmest days on average were 27.8 °C at Amberley AMO, followed by 27.0 °C at Archerfield Airport, followed by 26.9 °C at Brisbane.

The coolest days on average were 25.7 °C at Redcliffe, followed by 25.9 °C at Brisbane Aero, followed by 26.8 °C at Logan City Water Treatment.

The coldest day was 15.6 °C at Amberley AMO on 7 Jul, followed by 15.9 °C at Redcliffe on 7 Jul, followed by 16.2 °C at Redcliffe on 11 Jun, followed by 16.2 °C at Brisbane Aero on 7 Jul.

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

Minimum temperature

The coldest night was -2.5 °C at Amberley AMO on 12 Jun, followed by 0.3 °C at Amberley AMO on 15 Jul, followed by 0.7 °C at Amberley AMO on 30 Jul.  On 12 Jun a high pressure system over northern New South Wales directed a dry southerly flow over southern Queensland. Cool and dry southwesterly winds were observed throughout the state on 15 Jul.

The coolest nights on average were 12.9 °C at Amberley AMO, followed by 14.9 °C at Archerfield Airport, followed by 15.8 °C at Logan City Water Treatment.

The warmest nights on average were 17.1 °C at Redcliffe, followed by 16.6 °C at Brisbane, followed by 16.0 °C at Brisbane Aero.

The warmest night was 25.5 °C at Logan City Water Treatment on 25 Jan, followed by 25.2 °C at Brisbane on 25 Jan, followed by 25.0 °C at Brisbane on 22 Jan, followed by 25.0 °C at Logan City Water Treatment on 19 Dec.

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

Wind

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 80 km/h at Redcliffe on 2 Apr.

Other phenomena

A tornado was observed at Rosewood and Amberley on the 5th of June.

An exceptional duststorm developed over the Queensland 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 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. 

Further information

Media
(03) 9669 4057
Enquiries

Extremes in 2009
Hottest day 40.3 °C at Amberley AMO on 17 Nov
39.7 °C at Amberley AMO on 9 Dec
39.0 °C at Amberley AMO on 29 Nov
Warmest days on average 27.8 °C at Amberley AMO
27.0 °C at Archerfield Airport
26.9 °C at Brisbane
Coolest days on average 25.7 °C at Redcliffe
25.9 °C at Brisbane Aero
26.8 °C at Logan City Water Treatment
Coldest day 15.6 °C at Amberley AMO on 7 Jul
15.9 °C at Redcliffe on 7 Jul
16.2 °C at Redcliffe on 11 Jun
16.2 °C at Brisbane Aero on 7 Jul
Coldest night -2.5 °C at Amberley AMO on 12 Jun
0.3 °C at Amberley AMO on 15 Jul
0.7 °C at Amberley AMO on 30 Jul
Coolest nights on average 12.9 °C at Amberley AMO
14.9 °C at Archerfield Airport
15.8 °C at Logan City Water Treatment
Warmest nights on average 17.1 °C at Redcliffe
16.6 °C at Brisbane
16.0 °C at Brisbane Aero
Warmest night 25.5 °C at Logan City Water Treatment on 25 Jan
25.2 °C at Brisbane on 25 Jan
25.0 °C at Brisbane on 22 Jan
25.0 °C at Logan City Water Treatment on 19 Dec
Wettest overall 1275.5 mm at Logan City Water Treatment
1166.2 mm at Redcliffe
1157.8 mm at Brisbane Aero
Driest overall 903.1 mm at Amberley AMO
1045.8 mm at Archerfield Airport
1072.4 mm at Brisbane
Wettest day 150.8 mm at Redcliffe on 20 May
140.0 mm at Amberley AMO on 21 May
118.6 mm at Logan City Water Treatment on 3 Apr
Highest wind gust 93 km/h at Brisbane on 13 Oct
83 km/h at Redcliffe on 17 Nov
80 km/h at Redcliffe on 2 Apr


Summary statistics for 2009
Maximum temperatures
(°C)
Minimum temperatures
(°C)
Rainfall
(millimetres)
Mean
for
2009
Diff
from
average
Highest
for
2009
Mean
for
2009
Diff
from
average
Lowest
for
2009
Total
for
2009
Average
annual
total
Rank
of
2009
Fraction
of annual
average
Moreton South Coast (district 40)
Amberley AMO 27.8 +1.1 40.3 17 Nov 12.9 -0.2 -2.5 12 Jun 903.1 855.2 average 106%
Archerfield Airport 27.0 +0.8 38.0 17 Nov 14.9 +0.6 2.3 12 Jun 1045.8 1063.8 average 98%
Brisbane* 26.9 +1.3 36.1 9 Feb 16.6 +0.8 5.5 12 Jun 1072.4 1121.6 average 96%
Brisbane Aero 25.9 +0.6 34.8 3 Oct 16.0 +0.5 3.4 12 Jun 1157.8 997.7 high 116%
Logan City Water Treatment 26.8 +0.9 37.5 17 Nov 15.8 +0.9 3.5 12 Jun 1275.5 1081.7 average 118%
Redcliffe* 25.7 +0.5 34.7 3 Oct 17.1 +0.4 4.6 12 Jun 1166.2 992.6 average 117%

Notes

A Annual 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 4 pm on Monday 4 January 2010. 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.

* These sites are compared to other long-term sites in the area.

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