Brisbane Metro in December 2010: Wetter and cooler than average

The Brisbane metro received more than 3 times the long term average rainfall in December and there were few rain free days. Daytime temperatures were cooler than normal due to the increased cloud cover associated with the rainfall. Overnight temperatures tended a little cooler than average. Severe thunderstorms brought very large hail to the Logan area on the 15th.

    Significant thunderstorm reports

    11th December:  Intense short term rainfall in the southeast with localised flooding.

    15th December: Severe thundersorms generated many reports and included 2-3 cm hail reported from Logan Village, Golf ball hail reported from Logan, 5.5cm hail measured at Loganlea, Tennis ball hail reported from Bethania and wind damage reported from Beaudesert. A mini tornado was reported from Jimboomba. 

    16th December: High wind gusts in storms caused tree and structural damage and large hail was recorded at many sites. Intense rainfall was also recorded.

    17th December: Another day of big storms but reports of significant events were generally outside the metro area.

    Rainfall

    Very much above average was recorded in the Brisbane area with most rain gauges recording December totals amongst the highest 10% on record and commonly three times the long term average. Record high monthly rainfall was recorded at many sites in the southeast and the list of stations can be viewed in the December state summary.

    A few sites recorded their highest number of rain days this month, including Amberley with 22 days and 368.2 mm and the University Of Queensland Gatton with 21 rain days and 317 mm, these being double the average number of rain days for December. Many other long term sites further afield were similarly affected and those with the most rain days were Maleny with 27 days, Eumundi, Mt Tamborine and Mount Joseph with 26 days and Blackbutt PO, Gympie, Lindfield and Springbrook Road with 25 days.  

    The wettest overall of the main weather stations was Logan City Water Treatment Plant with 585.5 mm, followed by Brisbane with 479.8 mm and Brisbane Aero with 453.0 mm. Looking further afield at other gauges in the southeast, 3 of the highest December totals were recorded at Tomewin - Tallowood with 724.8 mm, Maleny Tamarind St 711.2 mm andSpringbrook Road 704.6 mm.

    The driest overall of the main weather stations was Redlands HRS with 319.6 mm, followed by Archerfield Airport with 354.6 mm and Amberley AMO with 368.2 mm.

    Some sites had their highest total December rainfall for at least 20 years.

    The wettest single day of the main weather stations was at Brisbane with 80.4 mm and Brisbane Aero with 76.8 mm on the 12th and Logan City Water Treatment Plant with 73.8 mm on the 27th.

    See a map of total rainfall. See a map of rainfall deciles.

    Temperature

    The warmest on average was Brisbane with 24.1 C, followed by Redcliffe with 23.8 C, Archerfield Airport with 23.7 C, Brisbane Aero with 23.7 C and Logan City Water Treatment Plant with 23.7 C.

    The coolest on average was Amberley AMO with 23.5 C, followed by Archerfield Airport with 23.7 C, Brisbane Aero with 23.7 C, Logan City Water Treatment Plant with 23.7 C and Redcliffe with 23.8 C.

    Maximum temperature

    Mean daily maximum temperatures were between 1 and 3 C lower than the long term average due to in creased cloud cover.  Since last summer, Brisbane did not reach 30 C until the 10th December and only 8 days were above 30 C this December and compares with more than double this number in the 2008 and 2009. 

    The hottest day was at Amberley AMO with 33.3 C on the 17th, followed by Logan City Water Treatment Plant with 32.8 C on the 16th and 17th.

    The warmest days on average were at Amberley AMO and Brisbane with 27.8 C, followed by Archerfield Airport and Logan City Water Treatment Plant with 27.5 C.

    The coolest days on average were at Brisbane Aero and Redcliffe with 26.9 C, followed by Archerfield Airport and Logan City Water Treatment Plant with 27.5 C.

    The coldest day was at Amberley AMO with 22.5 C on the 4th, followed by Redcliffe with 23.0 C on the 22nd, Amberley AMO with 23.0 C on the 26th and Brisbane with 23.1 C on the 22nd.

    Some sites had their lowest December mean daily maximum temperature on record. See a map of mean maximum temperatures. See a map of maximum temperature anomalies.

    Minimum temperature

    The coldest night was at Amberley AMO with 10.1 C on the 21st, followed by Archerfield Airport with 12.5 C on the 21st and Redlands HRS with 12.8 C on the 21st.

    The coolest nights on average were at Amberley AMO with 19.2 C, followed by Archerfield Airport with 19.8 C and Logan City Water Treatment Plant with 20.2 C.

    The warmest nights on average were at Redcliffe with 20.8 C, followed by Brisbane and Brisbane Aero with 20.5 C and Logan City Water Treatment Plant with 20.2 C.

    The warmest night was the 11th with Brisbane and Brisbane Aero recording 24.1 C, followed by Logan City Water Treatment Plant with 24.0 C and Redcliffe with 23.9 C.

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

    Wind

    The strongest wind gust was at Amberley AMO with 91 km/h on the 16th, followed by Redcliffe with 78 km/h on the 16th, followed by Archerfield Airport with 76 km/h on the 16th.

    Further information

    Media
    (03) 9669 4057
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    Extremes in December 2010
    Hottest day 33.3 C at Amberley AMO on the 17th
    32.8 C at Logan City Water Treatment Plant on the 16th
    32.8 C at Logan City Water Treatment Plant on the 17th
    32.6 C at Amberley AMO on the 15th
    Warmest days on average 27.8 C at Amberley AMO
    27.8 C at Brisbane
    27.5 C at Archerfield Airport
    27.5 C at Logan City Water Treatment Plant
    26.9 C at Brisbane Aero
    26.9 C at Redcliffe
    Coolest days on average 26.9 C at Brisbane Aero
    26.9 C at Redcliffe
    27.5 C at Archerfield Airport
    27.5 C at Logan City Water Treatment Plant
    27.8 C at Amberley AMO
    27.8 C at Brisbane
    Coldest day 22.5 C at Amberley AMO on the 4th
    23.0 C at Redcliffe on the 22nd
    23.0 C at Amberley AMO on the 26th
    23.1 C at Brisbane on the 22nd
    Coldest night 10.1 C at Amberley AMO on the 21st
    12.5 C at Archerfield Airport on the 21st
    12.8 C at Redlands HRS on the 21st
    Coolest nights on average 19.2 C at Amberley AMO
    19.8 C at Archerfield Airport
    20.2 C at Logan City Water Treatment Plant
    Warmest nights on average 20.8 C at Redcliffe
    20.5 C at Brisbane
    20.5 C at Brisbane Aero
    20.2 C at Logan City Water Treatment Plant
    Warmest night 24.1 C at Brisbane on the 11th
    24.1 C at Brisbane Aero on the 11th
    24.0 C at Logan City Water Treatment Plant on the 11th
    23.9 C at Redcliffe on the 11th
    Warmest on average overall 24.1 C at Brisbane
    23.8 C at Redcliffe
    23.7 C at Archerfield Airport
    23.7 C at Brisbane Aero
    23.7 C at Logan City Water Treatment Plant
    Coolest on average overall 23.5 C at Amberley AMO
    23.7 C at Archerfield Airport
    23.7 C at Brisbane Aero
    23.7 C at Logan City Water Treatment Plant
    23.8 C at Redcliffe
    Wettest overall 585.5 mm at Logan City Water Treatment Plant
    479.8 mm at Brisbane
    453.0 mm at Brisbane Aero
    Driest overall 319.6 mm at Redlands HRS
    354.6 mm at Archerfield Airport
    368.2 mm at Amberley AMO
    Wettest day 80.4 mm at Brisbane on the 12th
    76.8 mm at Brisbane Aero on the 12th
    73.8 mm at Logan City Water Treatment Plant on the 27th
    Highest wind gust 91 km/h at Amberley AMO on the 16th
    78 km/h at Redcliffe on the 16th
    76 km/h at Archerfield Airport on the 16th

    Highest total December rainfall for at least 20 years
    Total rainfall
    for December 2010 (mm)
    Most recent December
    at least this wet
    Years since
    wetter
    Average for
    December
    Archerfield Airport 354.6 444.0 in 1970 38 128.7
    Redlands HRS 319.6 423.7 in 1970 38 140.5



    Record lowest December mean daily maximum temperature
    Mean daily maximum
    temperature
    for December 2010 (C)
    Previous coolest
    for December
    Years of
    record
    Average for
    December
    Amberley AMO 27.8 27.9 in 1942 69 30.9



    Summary statistics for December 2010
    Maximum temperatures
    for December
    (C)
    Minimum temperatures
    for December
    (C)
    Rainfall
    for December
    (millimetres)
    Mean for
    December
    2010
    Diff
    from
    average
    Highest for
    December
    2010
    Mean for
    December
    2010
    Diff
    from
    average
    Lowest for
    December
    2010
    Total for
    December
    2010
    Average
    for
    December
    Rank of
    December
    2010
    Fraction of
    December
    average
    Moreton South Coast (district 40)
    Amberley AMO 27.8 -3.1 33.3 17th 19.2 +0.8 10.1 21st 368.2 123.3 v high 299%
    Archerfield Airport 27.5 -2.1 32.3 16th 19.8 +0.8 12.5 21st 354.6 128.7 v high 276%
    Brisbane* 27.8 -1.1 32.1 15th 20.5 +0.1 14.7 21st 479.8 133.3 v high 360%
    Brisbane Aero 26.9 -1.4 30.8 18th 20.5 +0.4 13.4 21st 453.0 140.4 v high 323%
    Logan City Water Treatment Plant 27.5 -1.5 32.8 17th 20.2 +1.1 13.1 21st 585.5 154.8 v high 378%
    Redcliffe* 26.9 -1.2  30.3 18th 20.8   13.5 21st 409.2 117.8v high 347%

    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 3 pm on Tuesday 4 January 2011. 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.

    * These sites are compared to other long-term sites in the area using the 1961 to 1990 period where available for Brisbane temperature, the 1981 to 2004 for Redcliffe temperature and all years of record for rainfall.

    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 significant thunderstorm reports were obtained from the Disaster Mitigation section of the Brisbane regional office of the Bureau of Meteorology.

    Further information

    Media
    (03) 9669 4057
    Enquiries