Brisbane Metro in January 2013: Extreme rainfall and flooding 

Refer to Special Climate Statements 43 and 44.

  • The region was affected by extreme rainfall and subsequent flooding in the last week of January (see SCS-44)
  • Most locations had less than 50 mm into the first three weeks of January
  • Overall, rainfall was generally above normal through the metro area, and both maximum and minimum temperatures were also above normal.
  • Logan City recorded its highest January rainfall, a record daily rainfall on the 28th and its highest January mean daily minimum temperature
  • Area-averaged rainfall for the Brisbane River catchment was very similar to that in the 2011 event (slightly higher than 2011 for periods of 1 and 2 days, slightly lower for periods of 3 and 4 days)
  • In the Bremer catchment rainfall totals ranked second behind 1974, and ahead of 2011

Rainfall

The wettest overall was Logan City Water Treatment Plant with 338.5 mm, followed by Amberley AMO with 277.8 mm, and Brisbane with 271.0 mm.

Some sites had their highest total January rainfall on record.

The wettest single day was at Logan City Water Treatment Plant with 192.5 mm on the 28th, followed by Archerfield Airport with 156.6 mm on the 28th, and Amberley AMO with 146.6 mm on the 28th.

Some sites had their highest January daily rainfall on record.

Temperature

The warmest on average was Amberley AMO with 26.5 C, followed by Archerfield Airport with 26.5 C, Brisbane with 26.5 C, Redcliffe with 26.3 C, Brisbane Aero with 26.2 C, and Logan City Water Treatment Plant with 26.2 C.

The coolest on average was Brisbane Aero with 26.2 C, followed by Logan City Water Treatment Plant with 26.2 C, Redcliffe with 26.3 C, Amberley AMO with 26.5 C, Archerfield Airport with 26.5 C and by Brisbane with 26.5 C.

Maximum temperature

The hottest day was at Amberley AMO with 40.2 C on the 19th, 39.3 C on the 9th and 39.2 C on the 13th.

The warmest days on average were at Amberley AMO with 32.5 C, followed by Archerfield Airport with 31.4 C and Logan City Water Treatment Plant with 30.6 C.

The coolest days on average were at Redcliffe with 29.4 C, followed by Brisbane Aero with 29.7 C and Brisbane with 30.5 C.

The coldest day was at Amberley AMO with 24.3 C on the 27th, followed by Logan City Water Treatment Plant with 24.9 C on the 27th and Archerfield Airport with 25.0 C on the 27th.

Minimum temperature

The coldest night was at Redlands HRS with 15.0 C on the 2nd, 15.7 C on the 17th, and by Amberley AMO with 16.5 C on the 8th.

The coolest nights on average were at Amberley AMO with 20.5 C, followed by Archerfield Airport with 21.7 C, and by Logan City Water Treatment Plant with 22.0 C.

The warmest nights on average were at Redcliffe with 23.1 C, followed by Brisbane Aero with 22.7 C, and by Brisbane with 22.3 C.

The warmest night was at Logan City Water Treatment Plant with 26.2 C on the 12th, followed by Brisbane with 26.1 C on the 12th, Brisbane Aero with 26.1 C on the 12th, and by Redcliffe with 26.0 C on the 12th.

Some sites had their highest January mean daily minimum temperature on record.

Wind

The strongest wind gust was at Brisbane Aero with 94 km/h on the 27th, followed by Redcliffe with 94 km/h on the 27th,94 km/h on the 28th, followed by Archerfield Airport with 93 km/h on the 28th, by Brisbane Aero with 93 km/h on the 28th, and by Archerfield Airport with 89 km/h on the 27th.

Other phenomena

The Brisbane River and Bremer catchments flooded

Further information

Media
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Extremes in January 2013
Hottest day 40.2 C at Amberley AMO on the 19th
Warmest days on average 32.5 C at Amberley AMO
31.4 C at Archerfield Airport
30.6 C at Logan City Water Treatment Plant
Coolest days on average 29.4 C at Redcliffe
29.7 C at Brisbane Aero
30.5 C at Brisbane
Coldest day 24.3 C at Amberley AMO on the 27th
Coldest night 15.0 C at Redlands HRS on the 2nd
Coolest nights on average 20.5 C at Amberley AMO
21.7 C at Archerfield Airport
22.0 C at Logan City Water Treatment Plant
Warmest nights on average 23.1 C at Redcliffe
22.7 C at Brisbane Aero
22.3 C at Brisbane
Warmest night 26.2 C at Logan City Water Treatment Plant on the 12th
Warmest on average overall 26.5 C at Amberley AMO
26.5 C at Archerfield Airport
26.5 C at Brisbane
Coolest on average overall 26.2 C at Brisbane Aero
26.2 C at Logan City Water Treatment Plant
Wettest overall 338.5 mm at Logan City Water Treatment Plant
Wettest day 192.5 mm at Logan City Water Treatment Plant on the 28th
Highest wind gust 94 km/h at Brisbane Aero on the 27th
94 km/h at Redcliffe on the 27th
94 km/h at Redcliffe on the 28th

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


Record highest January daily rainfall
Highest daily rainfall
in January 2013 (mm)
Previous wettest
for January
Years of
record
Logan City Water Treatment Plant 192.5 on the 28th 145.2 on the 25th in 2012 21



Record highest total January rainfall
Total rainfall
for January 2013 (mm)
Previous wettest
for January
Years of
record
Average for
January
Logan City Water Treatment Plant 338.5 327.5 in 2012 21 135.3



Record highest January mean daily minimum temperature
Mean daily minimum
temperature
for January 2013 (C)
Previous warmest
for January
Years of
record
Average for
January
Logan City Water Treatment Plant 22.0 21.8 in 2004 20 20.4



Summary statistics for January 2013
Maximum temperatures
for January
(C)
Minimum temperatures
for January
(C)
Rainfall
for January
(millimetres)
Mean for
January
2013
Diff
from
average
Highest for
January
2013
Mean for
January
2013
Diff
from
average
Lowest for
January
2013
Total for
January
2013
Average
for
January
Rank of
January
2013
Fraction of
January
average
Moreton South Coast (district 40)
Amberley AMO 32.5 +1.4 40.2 19th 20.5 +0.9 16.5 8th 277.8 116.8 v high 238%
Archerfield Airport 31.4 +1.1 37.4 19th 21.7 +1.5 17.6 8th 255.4 138.1 high 185%
Brisbane 30.5 +0.3 35.4 19th 22.3 +1.0 19.8 7th 271.0 141.8 high 191%
Brisbane Aero 29.7 +0.8 32.4 2nd 22.7 +1.6 19.2 17th 248.8 141.6 high 176%
Logan City Water Treatment Plant 30.6 +1.0 36.6 12th 22.0 +1.6 18.5 17th 338.5 135.3 highest 250%
Redcliffe 29.4   32.5 9th 23.1   19.8 17th 212.0 171.9 average 123%

Notes

A Monthly 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 Friday 1 February 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.

The ACORN-SAT dataset is being used for temperature area averages from December 2012 onwards. The major change from earlier datasets is that the ACORN-SAT dataset commences in 1910, rather than 1950, and hence rankings are calculated using a larger set of years.

Further information

Media
(03) 9669 4057
Enquiries