Monday, 1 June 2009 - Seasonal Climate Summary for Brisbane Metro - Product code IDCKGC24R0

Brisbane Metro in autumn 2009

  • Well above average rainfall for autumn in the metro area
  • Temperatures were close to the autumn average

An archive of previous seasonal summaries for Brisbane Metro is also available, as are summaries for other states and many other climate summaries and diagnostics.

Rainfall

The rainfall in the metropolitan area for autumn was well above the long term average. All metropolitan sites received at least one and a half times the expected rainfall. After a dry start to the season, where less than half the long term monthly average was recorded in March, the remaining two months managed to produce significant totals. More detail on individual months are available for March, April and May 2009.

The wettest overall was 588.0 mm at Redcliffe, then 546.4 mm at Logan City Water Treatment, followed by 506.2 mm at Brisbane Aero.

The wettest single day 150.8 mm at Redcliffe on 20 May and then 142.2 mm at Amberley AMO on 21 May. Amberley also received its highest autumn daily rainfall on record.

Maximum temperature

The hottest day was 35.8 C at Amberley AMO on 1 March and the warmest days on average were 27.1 C at Amberley AMO.

The coolest days on average were 25.8 C at Redcliffe and the coldest day was 17.7 C at Amberley AMO on 20 May.

Minimum temperature

The coldest night was 1.8 C at Amberley AMO on 15 May and the coolest nights on average were 13.5 C at Amberley AMO

The warmest nights on average were 17.7 C at Redcliffe and the warmest night was 24.1 C at Archerfield Airport on 3 March.

Wind

The strongest recorded wind gust was 80 km/h at Redcliffe on 2 April, then 76 km/h at Archerfield Airport on 16 March and also at Redcliffe on 20 May.

Further information

Queensland Climate Services Centre
Bureau of Meteorology
Phone (07) 3239 8700
Email climate.qld@bom.gov.au

Extremes

Hottest day
Highest temperature
35.8 C at Amberley AMO on 1 Mar
Warmest days on average
Highest mean daily maximum temperature
27.1 C at Amberley AMO
Coolest days on average
Lowest mean daily maximum temperature
25.8 C at Redcliffe
Coldest day
Lowest daily maximum temperature
17.7 C at Amberley AMO on 20 May
Coldest night
Lowest temperature
1.8 C at Amberley AMO on 15 May
Coolest nights on average
Lowest mean daily minimum temperature
13.5 C at Amberley AMO
Warmest nights on average
Highest mean daily minimum temperature
17.7 C at Redcliffe
Warmest night
Highest daily minimum temperature
24.1 C at Archerfield Airport on 3 Mar
Wettest overall
Highest total rainfall
588.0 mm at Redcliffe
546.4 mm at Logan City Water Treatment
506.2 mm at Brisbane Aero
Wettest day
Highest daily rainfall
150.8 mm at Redcliffe on 20 May
142.2 mm at Amberley AMO on 21 May
118.6 mm at Logan City Water Treatment on 3 Apr
Highest wind gust
80 km/h at Redcliffe on 2 Apr
76 km/h at Archerfield Airport on 16 Mar
76 km/h at Redcliffe on 20 May


Records

Record highest autumn daily rainfall
Highest daily rainfall
in autumn 2009 (mm)
Previous highest
for autumn
Years of
record
Amberley AMO 142.2 on 21 May 121.0 on 9 May 1980 68



Summaries

Summary statistics for autumn 2009
Maximum temperatures
for autumn
(C)
Minimum temperatures
for autumn
(C)
Rainfall
for autumn
(millimetres)
Mean for
autumn
2009
Diff
from
average
Highest for
autumn
2009
Mean for
autumn
2009
Diff
from
average
Lowest for
autumn
2009
Total for
autumn
2009
Average
for
autumn
Rank of
autumn
2009
Fraction of
autumn
average
Moreton South Coast (district 40)
Amberley AMO 27.1 +0.3 35.8 1 Mar 13.5 -0.4 1.8 15 May 400.4 190.8 high 210%
Archerfield Airport 26.5 +0.1 34.4 1 Mar 15.6 +0.5 6.0 15 May 498.4 278.2 high 179%
Brisbane* 26.8 +0.9 33.8 1 Mar 17.3  +0.8 9.0 16 May 483.6 302.7 high 160%
Brisbane Aero 25.9 0.0 31.2 5 Mar 16.7 +0.5 7.0 16 May 506.2 261.0 high 194%
Logan City Water Treatment 26.3 +0.1 35.1 1 Mar 16.2 +0.6 6.6 16 May 546.4 308.1 high 177%
Redcliffe* 25.8 0.0  32.8 1 Mar 17.7  +0.1 10.9 15 May 588.0 282.4 very high 208%

Notes

This statement has been prepared based on information available at 11 am on Monday 1 June 2009. Some checks have been made on the data, but it is possible that results will change as new information becomes available.

Please note that the rainfall data from Bureau of Meteorology telemetry gauges (those with ALERT, AL or TM in their names) includes real-time operational data from automated systems and has not been checked.

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. *In this case, averages from a nearby suitable site have been used instead (these are marked with an *).

The median is sometimes more representative than the mean of long-term average rain.

The temperature anomaly maps are calculated with respect to the reference period 1961−1990. The rainfall decile maps are based on a reference period comprising all gridded analyses from 1900 to the present available at the time the deciles are calculated.

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.http://wdev.bom.gov.au/climate/current/season/qld/summary.shtml

The median is sometimes more representative than the mean of long-term average rain.

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

Tamika Tihema
Queensland Climate Services Centre
Bureau of Meteorology
Phone (07) 3239 8662
Email climate.qld@bom.gov.au