Brisbane Metro in December 2013: Very dry, warm days

  • Very dry in the Brisbane Metropolitan area
  • Monthly rainfall totals only 13–46 % of the average
  • Daytime temperatures slightly warmer than average
  • Overnight temperatures slightly cooler than average

Rainfall

Very dry conditions were experienced across the Brisbane metropolitan sites, with monthly totals not exceeding 60 mm, well below the long-term average rainfall for December. Some isolated thunderstorm activity at mid-month was unable to produce enough rain to equal or exceed the long term average. The highest monthly total was at Amberley with 55.8 mm, followed by Redcliffe with 37.0 mm. Amberley recorded 20.2mm on 1 December, recording over one-third of its total monthly rainfall in one day.

Logan City had its lowest total December rainfall on record and received less than 20% of its average December rainfall.

Maximum temperature

Slightly above average for most Brisbane Metropolitan sites, with warm days near the end of the month.  Amberley recorded the highest maximum temperature for the region on the 29th, with 40.4 C. This was closely followed by Logan City Water Treatment Plant on the same day, only 0.04 C lower with 40.0 C. Amberley also had the warmest days on average with 30.9 C.

The coolest days on average were at Redcliffe with 27.7 C, along with the coldest day with 24.3 C on the 1st.

Minimum temperature

Slightly below average minimum temperatures were observed for all Brisbane Metro sites, with the last weeks of December having warmer than usual night-time temperatures. Nights at Amberley were the coolest overall; more than 2 C below average at 16.3 C. Archerfield Airport had the second-coolest nights on average with 18.3 C
 
The coldest night at Amberley with 10.4 C on the 7th.

The warmest nights on average were at Redcliffe with 20.1 C. Redcliffe also recorded the warmest night with 24.0 C on the 28th.

Wind

The strongest wind gust was at Redcliffe with 65 km/h on the 29th.

Further information

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Extremes in December 2013
Hottest day 40.4 C at Amberley AMO on the 29th
Warmest days on average 30.9 C at Amberley AMO
Coolest days on average 27.7 C at Redcliffe
Coldest day 24.3 C at Redcliffe on the 1st
Coldest night 10.4 C at Amberley AMO on the 7th
Coolest nights on average 16.3 C at Amberley AMO
Warmest nights on average 20.1 C at Redcliffe
Warmest night 24.0 C at Redcliffe on the 28th
Warmest on average overall 24.7 C at Brisbane
Coolest on average overall 23.5 C at Brisbane Aero
Wettest overall 55.8 mm at Amberley AMO
Wettest day 20.2 mm at Amberley AMO on the 1st
Highest wind gust 65 km/h at Redcliffe on the 29th

Maps
Observed Anomaly Decile 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 lowest total December rainfall
Total rainfall
for December 2013 (mm)
Previous driest
for December
Years of
record
Average for
December
Logan City Water Treatment Plant 24.4 46.0 in 1994 20 126.2



Summary statistics for December 2013
Maximum temperatures
for December
(C)
Minimum temperatures
for December
(C)
Rainfall
for December
(millimetres)
Mean for
December
2013
Diff
from
average
Highest for
December
2013
Mean for
December
2013
Diff
from
average
Lowest for
December
2013
Total for
December
2013
Average
for
December
Rank of
December
2013
Fraction of
December
average
Moreton South Coast (district 40)
Amberley AMO 30.9 +0.1 40.4 29th 16.3 -2.1 10.4 7th 55.8 121.4 low 46%
Archerfield Airport 30.1 +0.6 37.3 29th 18.3 -0.7 12.0 7th 26.6 126.8 v low 21%
Brisbane 29.7 +0.4 35.5 5th 19.6 -0.7 15.0 7th 18.0 139.6 v low 13%
Brisbane Aero 27.9 -0.2 31.0 29th 19.2 -0.9 14.2 2nd 34.6 131.2 v low 26%
Logan City Water Treatment Plant 29.4 +0.5 40.0 29th 18.9 -0.2 13.5 7th 24.4 126.2 lowest 19%
Redcliffe 27.7 -0.5 34.4 5th 20.1 -0.8 15.7 3rd 37.0 124.0 low 30%

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 7 pm on Wednesday 1 January 2014. 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.