Brisbane Metro in January 2010
Hot and dry with a rainy finish.
- Daytime temperatures hotter than usual.
- Lower than average January rainfall.
- Most rain received at end of January
Rain was recorded at most sites each day until the 9th in common with a large part of the rest of the state. Very little rain was recorded later, except on the 18th, until the last few days of the month.
During the last few days of January ex Tropical Cyclone Olga traversed southeast through the interior, the monsoon trough was drawn further south along the east coast and a high pressure system over the Tasman Sea helped tighten the surface pressure gradient from the south. This situation brought a strong moist east to northeast flow with showers through the Brisbane area. Rain from the interior was also advected through the area at higher levels. Most sites recorded their highest daily total on the 30th or 31st.
The total monthly rain ranged from 27% at Amberley to 56% at Logan of the normal January rainfall for the main weather stations where totals were near 30 mm.
Thunderstorms were recorded during the 3rd, in western parts on the 6th and 8th, in all but the Gold Coast area on the 17th and 18th, in the south and west on the 27 and 28th and throughout on the 29th.
King tides led to salt water incursion to some of the more vulnerable coastal suburbs at month's end.
The wettest overall was 60.5 mm at Logan City Water Treatment, followed by 49.8 mm at Redcliffe, followed by 47.8 mm at Brisbane Aero.
Further afield in the greater southeast, a selection of the higher totals were Biggenden Post Office with 296.8mm, Eerwah Vale 249.6mm, Ball Lookout Alert* 249mm, Cooroy Composite 238mm, Eumundi - Crescent Rd 192.2mm, Wamuran Alert* 176mm, Upper Caboolture Alert* 127mm, Springbrook Road 121.6mm, Hinze Dam 118.6mm, Gatton Alert 94mm, Petrie Alert* 88mm.
The driest overall was 30.2 mm at Amberley AMO, followed by 40.2 mm at Brisbane, followed by 46.4 mm at Archerfield Airport.
The wettest single day 33.0 mm at Logan City Water Treatment on the 4th, followed by 20.6 mm at Brisbane on the 4th, followed by 19.6 mm at Archerfield Airport on the 4th.See a map of total rainfall. See a map of rainfall deciles.
* Alert gauges are part of the operational real time flood warning network with limited quality control.
Record high mean daily maximum temperatures were recorded at Cape Moreton and Coolangatta under unusually clear dry January skies and Coolangatta recorded their highest January temperature with 35.9 °C on the 18th.
The daily maximum temperatures were colder than average between the 4th and 7th and then returned to near average until the 16th. Most days from the 17th were hotter than average though the rainy cloud covered skies at the end of the month was a pleasant change.The hottest day was 38.0 °C at Amberley AMO on the 18th, followed by 37.7 °C at Logan City Water Treatment on the 18th, followed by 37.3 °C at Amberley AMO on the 27th.
The warmest days on average were 32.6 °C at Amberley AMO, followed by 31.3 °C at Archerfield Airport, followed by 31.2 °C at Logan City Water Treatment.
The coolest days on average were 29.7 °C at Brisbane Aero, followed by 29.9 °C at Redcliffe, followed by 31.1 °C at Brisbane.
The coldest day was 26.9 °C at Logan City Water Treatment on the 4th, followed by 27.2 °C at Brisbane Aero on the 31st, followed by 27.3 °C at Amberley AMO on the 4th, followed by 27.3 °C at Redcliffe on the 4th.See a map of mean maximum temperatures. See a map of maximum temperature anomalies.
Daily minimum temperatures were close to average prior to the 19th. A cold airmass pushed into the area between the 19th and 21st with most locations recording their coldest overnight temperature for the month early on the 19th. Minima returned to near average until the end of the month.
The coldest night was 12.3 °C at Amberley AMO on the 19th, followed by 15.5 °C at Amberley AMO on the 20th, followed by 16.8 °C at Archerfield Airport on the 19th.
The coolest nights on average were 19.1 °C at Amberley AMO, followed by 20.7 °C at Archerfield Airport, followed by 21.2 °C at Logan City Water Treatment.
The warmest nights on average were 22.1 °C at Redcliffe, followed by 21.9 °C at Brisbane, followed by 21.5 °C at Brisbane Aero.
The warmest night was 24.9 °C at Brisbane on the 3rd, followed by 24.6 °C at Redcliffe on the 3rd, followed by 24.4 °C at Redcliffe on the 15th.See a map of mean minimum temperatures. See a map of minimum temperature anomalies.
The strongest wind gust was 74 km/h at Archerfield Airport on the 31st, followed by 63 km/h at Redcliffe on the 31st, followed by 61 km/h at Redcliffe on the 4th, followed by 61 km/h at Redcliffe on the 30th, these all being forced by the tight gradient developed between the high pressure system pushing up from the south and the monsoon systems reaching down from the north..
|Extremes in January 2010|
38.0 °C at Amberley
AMO on the 18th|
37.7 °C at Logan City Water Treatment on the 18th
37.3 °C at Amberley AMO on the 27th
|Warmest days on average||
32.6 °C at Amberley
31.3 °C at Archerfield Airport
31.2 °C at Logan City Water Treatment
|Coolest days on average||
29.7 °C at Brisbane
29.9 °C at Redcliffe
31.1 °C at Brisbane
26.9 °C at Logan
City Water Treatment on the 4th|
27.2 °C at Brisbane Aero on the 31st
27.3 °C at Amberley AMO on the 4th
27.3 °C at Redcliffe on the 4th
12.3 °C at Amberley
AMO on the 19th|
15.5 °C at Amberley AMO on the 20th
16.8 °C at Archerfield Airport on the 19th
|Coolest nights on average||
19.1 °C at Amberley
20.7 °C at Archerfield Airport
21.2 °C at Logan City Water Treatment
|Warmest nights on average||
22.1 °C at Redcliffe|
21.9 °C at Brisbane
21.5 °C at Brisbane Aero
24.9 °C at Brisbane
on the 3rd|
24.6 °C at Redcliffe on the 3rd
24.4 °C at Redcliffe on the 15th
60.5 mm at Logan
City Water Treatment|
49.8 mm at Redcliffe
47.8 mm at Brisbane Aero
30.2 mm at Amberley
40.2 mm at Brisbane
46.4 mm at Archerfield Airport
33.0 mm at Logan
City Water Treatment on the 4th|
20.6 mm at Brisbane on the 4th
19.6 mm at Archerfield Airport on the 4th
|Highest wind gust||
74 km/h at Archerfield
Airport on the 31st|
63 km/h at Redcliffe on the 31st
61 km/h at Redcliffe on the 4th
61 km/h at Redcliffe on the 30th
|Summary statistics for January 2010|
|Moreton South Coast (district 40)|
|Amberley AMO||32.6||+1.5||38.0||18th||19.1||-0.5||12.3||19th||30.2||110.6||v low||27%|
|Logan City Water Treatment||31.2||+1.5||37.7||18th||21.2||+0.8||17.6||19th||60.5||107.5||low||56%|
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 2 pm on Monday 1 February 2010. 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
They are not shown for sites with less than 10 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.