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Tuesday, 1 February 2011 - Monthly Climate Summary for South Australia - Product code IDCKGC13R0
Above average rainfall was recorded along eastern parts of South Australia in January. Tropical air was drawn into a trough near the eastern border of South Australia from the 12th to the 15th of January, placing eastern border areas of SA in an extremely moist air mass. A low formed on this trough on 12 January near Mount Gambier, before moving southwest and then southeast out of the State. Record January daily rainfall totals were recorded in the 24 hours to 9am on 14 January at seven locations along the southeastern border, with 5 of these locations recording their wettest January on record as a result, see highest January rainfall on records.
Elsewhere rainfall totals were average to below average for January 2011.
Rainfall over the pastoral districts was above average in the east and parts of the west, tending average elsewhere. Rainfall totals varied significantly across the Pastoral Districts. Some locations received less than 10 mm, mainly in central parts, whilst elsewhere totals were generally from 30 to 60 mm. Ernabella was the wettest location with 70 mm recorded.
Rainfall was above average in eastern agricultural areas, with record rainfall near the border associated with heavy rainfall around the middle of January as described above. Totals were average to below average over central districts and the Eyre Peninsula. Totals were largely less than 10 mm over western and central districts, with a few locations receiving up to 20 mm of rain for the month. Districts in the southeast received from around 20 mm, grading up to 100 mm or more near the eastern border. The highest January total was 163.2 mm at Alawoona in the Murray Mallee, also the highest in the state as a whole.Some sites had their highest total January rainfall on record. Some sites had their highest total January rainfall for at least 25 years. Some sites had their highest January daily rainfall on record. See a map of rainfall deciles.
The mean temperature (the average of the maximum and minimum temperatures) for South Australia as a whole in January 2011 was 29.5 °C, which is 2.7 °C above the long-term average.
Temperatures this January were generally above average across the state, due mainly to hot conditions in the last week of the month. The southeast however saw maximum temperatures just below average.
The area-averaged mean maximum temperature of 37.2°C was 2.5°C above the long-term January average for South Australia as a whole. This is the 5th warmest January, on record. January 2001 is the warmest January on record with a mean maximum temperature of 38.9°C.
Mean maximum temperatures over the pastoral districts of the state were 2 to 4 degrees above average, ranging from 33.8°C at Gluepot in the Northeast district to 41.6°C at Oodnadatta Airport in the Far North district. The highest recorded maximum temperature for January was 48.5°C at Roxby Downs on the 25th of the month. This is the highest temperature ever recorded at Roxby Downs for any month of the year, though it is not included in the record table due to its short record period. Woomera, Andamooka and Leigh Creek all set new highest daily maximum temperature records for January on the 25th, see highest January temperatures on record. For Woomera and Leigh Creek, this was the hottest day on record for any time of year.
Over the agricultural areas mean maximum temperatures were generally up to 2 degrees above the long-term average, apart from the southeast where maximum temperatures were up to 1 degree below average. Maximum temperatures for the month as a whole across the agricultural areas ranged from 22.0°C at Robe in the Lower Southeast to 37.4°C at Hawker. The lowest recorded maximum temperature for January was 16.6°C at Mount Lofty on the 11th of the month, with the hottest day being recorded at Port Augusta with 47.9°C on the 25th.
Some sites had their highest January temperature on record.
Mean minimum temperatures over the Pastoral Districts were between 2 to 4 degrees above average in January 2011, ranging from 16.7°C at Gluepot Reserve in the North East District to 27.0°C at Oodnadatta in the Far North District. The warmest overnight minimum temperature for January was 34.2°C recorded at Oodnadatta Airport in the Far North district on the 28th. This is equal to Oodnadatta's highest January minimum temperature on record, and is also the record highest minimum temperature for any time of the year at Oodnadatta, see warmest January night (highest daily minimum temperature) on record.
Over the agricultural areas overnight minimum temperatures were 1 to 2 degrees above average. The minimum temperatures in this area ranged from 12.1°C at Mount Gambier Aero and Naracoorte in the Lower South East to 20.7°C at Port Augusta Aero. The lowest recorded daily minimum temperature for January was 3.2°C recorded at Naracoorte on the 4th.
|Extremes in January 2011|
|Hottest day||48.5 °C at Roxby Downs (Olympic Dam Aerodrome) on the 25th|
|Warmest days on average||41.6 °C at Oodnadatta Airport|
|Coolest days on average||22.0 °C at Robe Comparison|
|Coldest day||16.6 °C at Mount Lofty on the 11th|
|Coldest night||3.2 °C at Naracoorte Aerodrome on the 4th|
|Coolest nights on average||
12.1 °C at Mount Gambier Aero|
12.1 °C at Naracoorte Aerodrome
|Warmest nights on average||27.0 °C at Oodnadatta Airport|
|Warmest night||34.2 °C at Oodnadatta Airport on the 28th|
|Warmest on average overall||34.3 °C at Oodnadatta Airport|
|Coolest on average overall||18.1 °C at Robe Comparison|
|Wettest overall||163.0 mm at Alawoona|
|Highest wind gust||85 km/h at Woomera Aerodrome on the 25th|
|Record highest January daily rainfall|
Highest daily rainfall
in January 2011 (mm)
|Millicent||59.8||on the 14th||45.2||on the 25th in 1941||128|
|Frances||104.0||on the 14th||56.0||on the 20th in 2007||121|
|Wolseley||86.2||on the 14th||61.4||on the 20th in 2007||120|
|Kalangadoo||74.0||on the 14th||59.7||on the 25th in 1941||96|
|Alawoona||132.0||on the 14th||61.0||on the 25th in 1941||90|
|Mount Gambier Aero||82.4||on the 14th||53.4||on the 15th in 1995||70|
|Loxton Research Centre||66.6||on the 14th||25.0||on the 20th in 2007||27|
|Record highest total January rainfall|
for January 2011 (mm)
|Loxton Research Centre||97.6||59.6||in 2007||27||19.0|
|Highest total January rainfall for at least 25 years|
for January 2011 (mm)
Most recent January
at least this wet
|Mount Gambier Aero||119.6||126.2||in 1963||48||27.4|
|Lameroo Comparison||74.9||82.2||in 1979||32||19.7|
|Record highest January temperature|
in January 2011 (°C)
|Woomera Aerodrome||48.1||on the 25th||47.6||on the 2nd in 1960||62||34.4|
|Andamooka||47.8||on the 25th||47.6||on the 3rd in 1990||41||36.4|
|Leigh Creek Airport||46.1||on the 25th||45.6||on the 3rd in 1990||28||35.3|
|Record highest January daily minimum temperature|
Highest daily minimum
in January 2011 (°C)
|Oodnadatta Airport||34.2||on the 28th||= 34.2||on the 4th in 2004||62||22.9|
|Summary statistics for January 2011|
|Northwest (district 16)|
|Coober Pedy Airport||39.3||47.1||25th||24.9||17.9||5th||11.6|
|Far North (district 17)|
|Leigh Creek Airport||38.2||+2.9||46.1||25th||23.1||+2.5||15.1||5th||16.0||21.1||average||76%|
|Western Agricultural (district 18)|
|Coulta (Coles Point)||27.9||40.3||29th||15.5||9.0||23rd||5.2|
|North Shields (Port Lincoln AWS)||27.2||44.3||30th||16.4||12.6||23rd||4.2|
|Port Augusta Aero||35.4||47.9||25th||20.7||14.9||6th||3.4|
|Upper North (district 19)|
|Northeast (district 20)|
|Gluepot Reserve (Gluepot)||33.5||44.7||30th||16.7||9.6||4th||41.8|
|Lower North (district 21)|
|Clare High School||31.0||40.8||30th||15.9||8.5||18th||12.4|
|Port Pirie Aerodrome||33.2||44.4||30th||18.9||12.0||18th||9.5|
|Port Pirie Nyrstar Comparison||33.6||+1.6||44.5||30th||19.6||+2.0||14.8||18th||7.9||18.6||average||42%|
|Snowtown (Rayville Park)||32.7||43.4||30th||14.9||7.8||4th||8.2|
|Yorke Peninsula (district 22A)|
|Kangaroo Island (district 22B)|
|Adelaide Plains (district 23A)|
|Adelaide (Kent Town)||30.6||+1.4||42.9||31st||18.3||+1.3||13.2||19th||17.4||19.3||average||90%|
|County Light (district 23B)|
|Rosedale (Turretfield Research Centre)||31.4||+1.0||42.0||30th||16.2||+1.1||7.5||18th||9.1||18.4||average||49%|
|Mount Lofty Ranges (district 23C)|
|Hindmarsh Island AWS||24.9||41.2||30th||16.3||10.0||4th||18.4|
|Kuitpo Forest Reserve||25.4||39.4||31st||14.2||9.1||3rd||21.6|
|Mount Crawford (Mt Crawford AWS)||28.2||39.1||30th||14.1||7.7||3rd||7.6|
|Parawa (Second Valley Forest AWS)||23.6||38.3||30th||14.1||9.9||4th||10.6|
|Victor Harbor (Encounter Bay)||24.3||42.2||30th||15.5||9.2||6th||20.4|
|Upper Murray Valley (district 24A)|
|Loxton Research Centre||31.9||+0.2||40.6||30th||15.7||+1.2||11.0||4th||97.6||19.0||highest||514%|
|Lower Murray Valley (district 24B)|
|Murray Bridge (Pallamana Aerodrome)||29.1||44.3||30th||14.1||7.2||4th||12.6|
|Murray Bridge Comparison||29.6||+0.5||45.0||30th||15.6||+1.1||10.2||4th||14.4||16.4||average||88%|
|Murray Mallee (district 25A)|
|Upper Southeast (district 25B)|
|Lameroo (Austin Plains)||30.2||41.0||30th||14.3||9.1||3rd||74.4|
|Lameroo Comparison||30.3||-0.6||42.5||31st||15.4||+2.1||9.9||3rd||74.9||19.7||v high||380%|
|Lower Southeast (district 26)|
|Cape Jaffa (The Limestone)||23.3||35.3||30th||13.6||7.6||4th||27.6|
|Mount Gambier Aero||24.5||-0.7||39.6||30th||12.1||+1.0||4.9||4th||119.6||27.4||v high||436%|
A Monthly Climate Summary is prepared to list the main features of the weather in South Australia 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 Tuesday 1 February 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 20 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
(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.