Brisbane Metro in 2012: Wet, warm days and nights

During 2012 three of five locations in the Brisbane metro region recorded above-average rainfall. Rainfall at Amberley and Archerfield was 18% and 3% below average respectively, while the other stations received 111 to 119% of their long-term mean. Both day-time and over-night temperatures were above average (based on deciles), although both Amberley and Archerfield were the only stations to record positive anomalies (+0.3 and +0.4 C respectively).
  • The wettest overall was Redlands with 1379 mm
  • Warmest days on average were 27.0 C at Amberley and the warmest nights on average were 16.6 C at Redcliffe
  • There were a number of daily rainfall records broken in the Metro region, including Boondall and Mango Hill (refer to the QLD summary)

Other phenomena

Heavy rain in late January caused extensive flooding in southeast Queensland. A low pressure system, partially the remnants of a tropical low which had travelled across the Northern Territory, brought heavy rain and flash flooding across southeast Queensland on 23 March. Smoke was frequently observed in the southern SE Coast district during October. Severe thunderstorms over 17–18 November caused widespread damage in southeast Queensland and some flash flooding in the Brisbane suburbs.

Through the year

  • January - It was wet and cool with above-average rainfall and below-average temperatures. Redcliffe was the wettest overall and Brisbane Airport the coolest. Extreme rainfall began in the southeast around the 24th and it rained for 8 consecutive days in Brisbane and surrounds. A record-low relative humidity was recorded on the 11th at Brisbane. Extensive flooding occurred in late January across southeast Queensland.
  • February - Overall average, but on the cool side with essentially average rainfall and cool temperatures. Logan was the wettest overall and Amberley the coolest.
  • Autumn (March, April, May) - An all-round average autumn; based on deciles (see decile maps) rainfall and temperatures were average across the metro region. Redcliffe was the wettest overall and Brisbane the warmest.
  • Winter (June, July, August) - Wet, warm days and nights saw above-average rainfall and temperatures across the metro region, based on deciles (see decile maps). Redlands was the wettest overall and Brisbane the warmest. Redlands and Logan City observed new record-high winter daily minimum temperatures, from 48 years of record at Redlands, and 20 at Logan City. There was a record dry spell (for July & August) for Brisbane between 21 July and 30 August, surpassing the existing record of 38 days in 1991.
  • Spring (September, October, November) - Dry, warm days, and average nights. Based on deciles (see decile maps) rainfall was below average across the metro region. Amberley observed the warmest days on average, while Redcliffe recorded the warmest nights. Severe thunderstorms on 17 and 18 November caused widespread damage in southeast Queensland, whith some flash flooding in and around Brisbane.
  • December - Very dry and warm. All locations received below average rainfall, with Redlands and Amberley the lowest rainfall for at least 20 years. Brisbane received only 34% of its December average rainfall and was the warmest on average overall. Logan had a record highest December temperature of 40.1 C on the 4th and Archerfield an equal record highest December daily minimum temperature of 24.9 C on the 18th.

Rainfall

The wettest overall was Redlands HRS with 1379.3 mm, followed by Redcliffe with 1330.4 mm, followed by Brisbane Aero with 1261.8 mm.

The wettest single day was at Redlands HRS with 250.6 mm on 25 Jan, followed by Redcliffe with 234.8 mm on 25 Jan, followed by Brisbane Aero with 174.6 mm on 25 Jan.

Temperature

The warmest on average was Brisbane with 21.1 C, followed by Redcliffe with 20.6 C, followed by Archerfield Airport with 20.5 C.

The coolest on average was Amberley AMO with 19.6 C, followed by Brisbane Aero with 20.3 C, followed by Logan City Water Treatment Plant with 20.4 C.

Maximum temperature

The hottest day was at Amberley AMO with 40.6 C on 9 Jan, followed by Logan City Water Treatment Plant with 40.1 C on 4 Dec, followed by Amberley AMO with 39.2 C on 17 Dec.

The warmest days on average were at Amberley AMO with 27.0 C, followed by Archerfield Airport with 26.6 C, followed by Brisbane with 26.2 C.

The coolest days on average were at Redcliffe with 24.7 C, followed by Brisbane Aero with 25.1 C, followed by Logan City Water Treatment Plant with 25.9 C.

The coldest day was at Amberley AMO with 14.4 C on 26 Jun, followed by Archerfield Airport with 14.6 C on 27 Jun, followed by Brisbane with 15.1 C on 27 Jun.

Minimum temperature

The coldest night was at Amberley AMO with -1.6 C on 4 Aug, followed by Amberley AMO with -1.4 C on 5 Aug, followed by Amberley AMO with -1.4 C on 8 Aug, followed by Amberley AMO with -1.2 C on 3 Aug.

The coolest nights on average were at Amberley AMO with 12.2 C, followed by Archerfield Airport with 14.3 C, followed by Logan City Water Treatment Plant with 15.0 C.

The warmest nights on average were at Redcliffe with 16.6 C, followed by Brisbane with 16.0 C, followed by Brisbane Aero with 15.4 C.

The warmest night was at Brisbane with 25.1 C on 18 Dec, followed by Redcliffe with 25.0 C on 10 Jan, followed by Archerfield Airport with 24.9 C on 18 Dec, followed by Redcliffe with 24.9 C on 19 Dec.

Wind

The strongest wind gust was at Brisbane Aero with 85 km/h on 17 Nov, followed by Amberley AMO with 81 km/h on 19 Jan, followed by Redcliffe with 81 km/h on 22 Oct, followed by Redcliffe with 76 km/h on 10 Apr.

Further information

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Extremes in 2012
Hottest day 40.6 C at Amberley AMO on 9 Jan
40.1 C at Logan City Water Treatment Plant on 4 Dec
39.2 C at Amberley AMO on 17 Dec
Warmest days on average 27.0 C at Amberley AMO
26.6 C at Archerfield Airport
26.2 C at Brisbane
Coolest days on average 24.7 C at Redcliffe
25.1 C at Brisbane Aero
25.9 C at Logan City Water Treatment Plant
Coldest day 14.4 C at Amberley AMO on 26 Jun
14.6 C at Archerfield Airport on 27 Jun
15.1 C at Brisbane on 27 Jun
Coldest night -1.6 C at Amberley AMO on 4 Aug
-1.4 C at Amberley AMO on 5 Aug
-1.4 C at Amberley AMO on 8 Aug
Coolest nights on average 12.2 C at Amberley AMO
14.3 C at Archerfield Airport
15.0 C at Logan City Water Treatment Plant
Warmest nights on average 16.6 C at Redcliffe
16.0 C at Brisbane
15.4 C at Brisbane Aero
Warmest night 25.1 C at Brisbane on 18 Dec
25.0 C at Redcliffe on 10 Jan
24.9 C at Archerfield Airport on 18 Dec
24.9 C at Redcliffe on 19 Dec
Warmest on average overall 21.1 C at Brisbane
20.6 C at Redcliffe
20.5 C at Archerfield Airport
Coolest on average overall 19.6 C at Amberley AMO
20.3 C at Brisbane Aero
20.4 C at Logan City Water Treatment Plant
Wettest overall 1379.3 mm at Redlands HRS
1330.4 mm at Redcliffe
1261.8 mm at Brisbane Aero
Wettest day 250.6 mm at Redlands HRS on 25 Jan
234.8 mm at Redcliffe on 25 Jan
174.6 mm at Brisbane Aero on 25 Jan
Highest wind gust 85 km/h at Brisbane Aero on 17 Nov
81 km/h at Amberley AMO on 19 Jan
81 km/h at Redcliffe on 22 Oct

Maps
ObservedAnomalyDecile rank
Total
rainfall
Map of Rainfall totals Map of Percentage of normal rainfall Map of Rainfall deciles
Mean
daily
maximum
temperatures
Map of Mean maximum temperature Map of Anomaly in mean maximum temperature Map of Decile rank of mean maximum temperature
Mean
daily
minimum
temperatures
Map of Mean minimum temperature Map of Anomaly in mean minimum temperature Map of Decile rank of mean minimum temperature

Click on a map to show it full size in a pop-up window





Summary statistics for 2012
Maximum temperatures
(C)
Minimum temperatures
(C)
Rainfall
(millimetres)
Mean
for
2012
Diff
from
average
Highest
for
2012
Mean
for
2012
Diff
from
average
Lowest
for
2012
Total
for
2012
Average
annual
total
Rank
of
2012
Fraction
of annual
average
Moreton South Coast (district 40)
Amberley AMO 27.0 +0.3 40.6 9 Jan 12.2 -0.9 -1.6 4 Aug 703.8 861.7 low 82%
Archerfield Airport 26.6 +0.4 37.8 4 Dec 14.3 0.0 1.9 5 Aug 1034.6 1067.8 average 97%
Brisbane 26.2 -0.2 37.9 4 Dec 16.0 -0.2 4.1 3 Aug 1177.2 998.1 high 118%
Brisbane Aero 25.1 -0.2 35.9 11 Jan 15.4 -0.2 3.7 3 Aug 1261.8 1063.9 high 119%
Logan City Water Treatment Plant 25.9 0.0 40.1 4 Dec 15.0 0.0 3.6 3 Aug 1216.9 1097.8 average 111%
Redcliffe 24.7   35.5 4 Dec 16.6   5.5 4 Jul 1330.4

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 9 am on Wednesday 2 January 2013. 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 9 years of record, as they cannot then be calculated reliably.
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

Media
(03) 9669 4057
Enquiries