Friday, 1 October 2010 - Monthly Climate Summary for South Australia - Product code IDCKGC23R0
South Australia in September 2010
Coldest and wettest September since 1992
- Above average rainfall across South Australia.
- The Pastoral Districts received 2 to 6 times their September mean rainfall, with the first half of the month being particularly wet.
- 40 locations set new highest daily rainfall records for September, most of those on September the 4th.
- A handful of sites set new monthly rainfall records for September.
- Maximum temperatures were well below average, with some sites setting new lowest mean daily maximum temperature records for September.
- Maximum temperatures were the second coldest on record for September for the State as a whole.
The first week of September saw a rainfall event that extended over central Australia, combined with an intense low pressure system that developed over southern Australia. This produced widespread rainfall through this period over central and southern Australia. This is the main contributor to September 2010 being the wettest September since 1992 for the State as a whole. The wettest September across the whole State was in 1979, September 2010 being the 3rd wettest September on record.
For the year as a whole, SA has already exceeded its average annual rainfall, making 2010 the first above-normal year for rainfall since 2003.
Rainfall totals were well above average across the Pastoral Districts, with most areas receiving 2 to 6 times their monthly September average. Several locations also had new daily rainfall records for September. Rainfall totals ranged from about 20 mm to 80 mm. Leigh Creek received 112.8 mm for the month, with is almost 6 times its monthly September average of 19.7 mm.
Rainfall totals were above average across the Agricultural areas, with locations receiving 1 to 3 times the monthly average for September. About 30 locations set new daily rainfall records for the month, with most set on the 4th.
Rainfall totals were generally between 40 and 100 mm across south-eastern parts of the agricultural districts, increasing up to 70 to 200 mm in the Mount Lofty Ranges. West Central districts had totals around 80 mm to 120 mm, and the Western Agricultural District had totals ranging from 30 mm up to 100 mm.
Across the longer term, rainfall totals for the growing season to date (April to September) are generally average to above average across all of the Agricultural Districts. Year to date rainfall totals are generally average to above average, increasing to well above average across the northeast half of South Australia, and in the southwest.Some sites had their highest total September rainfall on record. Some sites had their highest total September rainfall for at least 25 years. Some sites had their highest September daily rainfall on record. See a map of rainfall deciles.
The monthly mean September temperature (the average of the maximum and minimum temperatures) was 15.1°C, which is 1.1°C below the long-term average for South Australia.
The area-averaged mean maximum temperature of 21.0°C was 2.7°C below the long-term September average for South Australia. This is the second coldest mean maximum temperature recorded for South Australia in September. The coldest September on record was in 1958. This month is also the first September since 1992 to record a below average mean maximum temperature. All September's since 1992 had been warmer than average for South Australia until this year.
Mean maximum temperatures at individual locations varied, but were well below average for September, with temperatures up to 3°C below average in the east, grading to more than 4°C below average in the west. Kyancutta, Ceduna and Whyalla on the northern Eyre Peninsula recorded coldest on record mean maximum temperatures for September.
In the Pastoral districts mean maximum temperatures ranged from 18.0°C at Yunta Airstrip to 23.9°C at Moomba Airport and Marree Comparison. The highest recorded maximum temperature in the Pastorals for September was 33.4°C at Marla Police Station on the 1st. The lowest was 11°C at Ernabella (Pukatja) on the 18th. Marla Police Station recorded its lowest September maximum temperature on record with 14.2°C on the 15th.
Mean maximum temperatures over the Agricultural districts ranged from 10.9°C at Mount Lofty to 19.8°C at Port Augusta Aero. The highest maximum recorded during September was 27.0°C at Hawker on the 1st. The lowest was 8.3°C at Mount Lofty on the 5th.
Some sites had their coldest September day (lowest maximum temperature) on record. Some sites had their lowest September mean daily maximum temperature on record. Some sites had their lowest September mean daily maximum temperature for at least 25 years.
Mean minimum temperatures were generally within 1°C of the long-term average this September.
Mean minimum temperatures in the pastoral areas ranged from 6.7°C at Nonning and Yunta Airstrip to 11.8°C at Moomba Airport. The lowest minimum temperature recorded in the Pastorals was -0.5°C at Gluepot on the 30th. The highest minimum temperature was 19.1°C at Moomba Airport on the 3rd.
Over the Agricultural districts mean monthly minimum temperatures ranged from 4.2°C at Yongala to 11.2°C at Neptune Island. The lowest minimum temperature recorded during September was -1.4°C at Murray Bridge (Pallamana Aerodrome) on the 30th. The highest minimum temperature was 14.2°C at Whyalla Aero on the 13th.
|Extremes in September 2010|
|Hottest day||33.4 °C at Marla Police Station on the 1st|
|Warmest days on average||
23.9 °C at Marree Comparison|
23.9 °C at Moomba Airport
|Coolest days on average||10.9 °C at Mount Lofty|
|Coldest day||8.3 °C at Mount Lofty on the 5th|
|Coldest night||-1.4 °C at Murray Bridge (Pallamana Aerodrome) on the 30th|
|Coolest nights on average||4.2 °C at Yongala|
|Warmest nights on average||11.8 °C at Moomba Airport|
|Warmest night||19.1 °C at Moomba Airport on the 3rd|
|Wettest overall||200.2 mm at Parawa (Second Valley Forest AWS)|
|Highest wind gust||117 km/h at Cape Willoughby on the 4th|
|Record highest September daily rainfall|
Highest daily rainfall
in September 2010 (mm)
|Blinman||117.0||on the 4th||86.1||on the 6th in 1892||128|
|Curnomona (Curnamona)||51.0||on the 4th||47.5||on the 10th in 1881||128|
|Hamley Bridge||56.6||on the 4th||35.6||on the 19th in 1913||127|
|Hawker||53.8||on the 4th||46.7||on the 6th in 1892||127|
|Milang||36.0||on the 4th||34.2||on the 23rd in 1998||127|
|Port Broughton||35.0||on the 4th||34.4||on the 27th in 1979||127|
|Port Wakefield||45.2||on the 4th||35.3||on the 27th in 1906||127|
|Warooka||64.0||on the 4th||44.0||on the 24th in 1995||127|
|Adelaide (Salisbury Bowling Club)||45.0||on the 4th||41.7||on the 22nd in 1923||126|
|Callington||39.2||on the 4th||35.3||on the 10th in 1884||126|
|Gumeracha||53.6||on the 4th||52.6||on the 7th in 1886||126|
|Wallaroo||51.2||on the 4th||36.8||on the 2nd in 1997||126|
|Two Wells||50.2||on the 4th||34.2||on the 23rd in 1998||125|
|Corny Point||44.2||on the 4th||34.0||on the 19th in 1997||120|
|Manna Hill||48.4||on the 4th||33.8||on the 17th in 1903||120|
|Paskeville||43.0||on the 4th||36.6||on the 12th in 1917||120|
|Koonamore||62.0||on the 4th||42.4||on the 23rd in 1916||118|
|Palmer||41.2||on the 4th||40.1||on the 14th in 1960||110|
|American River||45.2||on the 4th||42.7||on the 24th in 1884||106|
|Erudina||57.8||on the 4th||38.1||on the 25th in 1926||98|
|Mount Hope (Fairview)||37.6||on the 4th||32.2||on the 25th in 1979||98|
|Cudlee Creek (Millbrook)||58.8||on the 4th||52.6||on the 9th in 1941||97|
|Finniss||37.4||on the 4th||33.0||on the 18th in 1921||95|
|Adelaide (Torrens Island)||34.6||on the 4th||33.0||on the 30th in 1928||82|
|Rosedale (Turretfield Research Centre)||44.6||on the 4th||40.0||on the 2nd in 1997||78|
|Parafield Airport||37.0||on the 4th||26.7||on the 3rd in 1931||63|
|Mount Bold Reservoir||42.2||on the 4th||35.6||on the 12th in 1988||60|
|Nullarbor||25.8||on the 3rd||23.0||on the 27th in 1974||58|
|Stockport (Clifton)||55.0||on the 4th||48.4||on the 24th in 1995||52|
|Williamstown (South Para Reservoir)||52.2||on the 4th||35.0||on the 8th in 2004||43|
|Parachilna (Motpena)||39.0||on the 4th||35.0||on the 3rd in 2005||42|
|Cowell (Winter Springs)||59.6||on the 4th||41.0||on the 28th in 1979||41|
|Bolivar Treatment Works||31.0||on the 4th||30.1||on the 23rd in 1998||38|
|Edinburgh RAAF||53.4||on the 4th||25.8||on the 23rd in 1998||38|
|Kensington Upper (Burnside)||36.8||on the 4th||35.6||on the 12th in 1917||33|
|Parndana||33.2||on the 4th||32.0||on the 10th in 1985||31|
|Loxton Research Centre||50.6||on the 4th||32.8||on the 2nd in 1997||27|
|Beltana Roadhouse||66.2||on the 4th||33.0||on the 3rd in 2005||25|
|Leigh Creek Airport||97.6||on the 4th||33.8||on the 3rd in 2005||25|
|Mungeranie (Kalamurina)||20.8||on the 9th||15.5||on the 15th in 1998||25|
|Record highest total September rainfall|
for September 2010 (mm)
|Port Wakefield||105.4||91.0||in 1992||137||33.4|
|Beltana Roadhouse||78.8||55.2||in 2005||25||18.9|
|Leigh Creek Airport||112.8||55.8||in 2005||25||19.7|
|Highest total September rainfall for at least 25 years|
for September 2010 (mm)
Most recent higher
|Langhorne Creek||86.6||103.5||in 1893||117||39.6|
|Murray Bridge Comparison||88.3||93.0||in 1893||117||36.8|
|Marree Comparison||71.5||83.7||in 1904||106||10.7|
|Curnomona (Curnamona)||58.5||69.9||in 1964||46||13.3|
|Oodnadatta Airport||52.4||66.5||in 1964||36||10.2|
|Mount Dare||49.2||73.2||in 1975||32||7.4|
|Cleve Aerodrome||89.6||110.0||in 1979||31||37.5|
|Cowell (Winter Springs)||108.2||128.0||in 1979||31||38.5|
|Tumby Bay||100.0||101.0||in 1979||29||36.4|
|Tarcoola (Mobella)||40.4||110.8||in 1979||28||14.6|
|Record lowest September daily maximum temperature|
Lowest daily maximum
in September 2010 (°C)
|Marla Police Station||14.2||on the 15th||15.1||on the 1st in 1995||25||26.9|
|Record lowest September mean daily maximum temperature|
Mean daily maximum
for September 2010 (°C)
|Streaky Bay||17.5||= 17.5||in 1956||83||20.2|
|Ceduna AMO||17.9||18.1||in 1992||69||21.4|
|Whyalla Aero||17.5||18.1||in 1984||25||21.6|
|Lowest September mean daily maximum temperature for at least 25 years|
Mean daily maximum
for September 2010 (°C)
Most recent lower
|Oodnadatta Airport||23.4||23.2||in 1969||31||26.6|
|Summary statistics for September 2010|
|Northwest (district 16)|
|Coober Pedy Airport||21.3||29.5||1st||10.3||6.0||5th||16.2|
|Marla Police Station||22.6||-4.3||33.4||1st||9.5||-1.3||4.7||6th||50.9||11.2||v high||454%|
|Roxby Downs (Olympic Dam Aerodrome)||21.7||29.5||1st||9.0||1.8||30th||31.0|
|Far North (district 17)|
|Leigh Creek Airport||20.7||-2.5||28.8||1st||9.1||-0.2||2.6||30th||112.8||19.7||highest||573%|
|Marree Comparison||23.9||-1.7||31.7||1st||10.9||+1.2||7.5||18th||71.5||10.7||v high||668%|
|Oodnadatta Airport||23.4||-3.2||33.1||1st||11.3||-0.1||7.2||21st||52.4||10.2||v high||514%|
|Western Agricultural (district 18)|
|Cleve Aerodrome||15.8||21.1||24th||8.1||4.4||30th||89.6||37.5||v high||239%|
|Coulta (Coles Point)||15.5||20.2||8th||8.5||3.4||24th||78.6|
|Neptune Island||14.9||-1.3||17.3||8th||11.2||-0.3||9.1||10th||125.0||46.5||v high||269%|
|North Shields (Port Lincoln AWS)||16.3||21.8||8th||8.4||3.5||30th||87.8|
|Port Augusta Aero||19.8||26.4||24th||8.7||3.1||30th||40.6|
|Whyalla Aero||17.5||-4.1||23.0||9th||8.8||+0.7||2.9||30th||70.2||28.8||v high||244%|
|Upper North (district 19)|
|Northeast (district 20)|
|Gluepot Reserve (Gluepot)||18.9||24.9||24th||7.2||-0.5||30th||72.3|
|Lower North (district 21)|
|Clare High School||14.3||18.1||13th||6.2||0.6||29th||101.8|
|Port Pirie Aerodrome||18.2||23.4||24th||7.1||1.2||24th||42.1|
|Port Pirie Nyrstar Comparison||18.5||-2.9||24.0||24th||9.2||-0.6||5.0||7th||51.9||35.6||high||146%|
|Snowtown (Rayville Park)||16.4||20.0||24th||6.0||-0.1||7th||60.2|
|Yorke Peninsula (district 22A)|
|Kangaroo Island (district 22B)|
|Cape Willoughby||14.2||-1.7||17.3||25th||10.0||-0.3||7.4||28th||92.2||56.4||v high||163%|
|Adelaide Plains (district 23A)|
|Adelaide (Kent Town)||16.9||-2.1||20.5||13th||9.2||-0.5||4.1||7th||72.2||60.3||high||120%|
|Edinburgh RAAF||16.5||-2.4||21.0||13th||7.8||-0.3||2.3||29th||94.2||48.8||v high||193%|
|County Light (district 23B)|
|Rosedale (Turretfield Research Centre)||16.0||-2.3||19.9||13th||6.4||-0.2||-0.4||29th||96.4||53.7||v high||180%|
|Mount Lofty Ranges (district 23C)|
|Hindmarsh Island AWS||15.4||19.5||12th||9.7||6.2||30th||91.4|
|Kuitpo Forest Reserve||13.1||16.8||13th||7.0||4.0||30th||108.2|
|Mount Crawford (Mt Crawford AWS)||12.3||16.8||13th||6.0||2.9||30th||125.6|
|Parawa (Second Valley Forest AWS)||12.2||15.4||25th||7.3||4.7||30th||200.2|
|Victor Harbor (Encounter Bay)||15.6||19.2||12th||8.8||3.0||30th||86.6|
|Upper Murray Valley (district 24A)|
|Loxton Research Centre||17.8||-2.9||21.8||27th||6.4||+0.1||0.9||24th||60.0||27.4||v high||219%|
|Lower Murray Valley (district 24B)|
|Murray Bridge (Pallamana Aerodrome)||16.2||20.7||26th||6.4||-1.4||30th||71.8|
|Murray Bridge Comparison||17.3||-2.5||21.8||26th||7.7||+0.5||1.5||30th||88.3||36.8||v high||240%|
|Murray Mallee (district 25A)|
|Upper Southeast (district 25B)|
|Lameroo (Austin Plains)||16.2||20.4||9th||5.4||-0.3||30th||34.6|
|Lower Southeast (district 26)|
|Cape Jaffa (The Limestone)||14.5||17.2||25th||8.8||5.0||14th||61.6|
|Mount Gambier Aero||14.4||-1.4||17.8||25th||7.0||+0.7||1.7||14th||77.4||73.0||average||106%|
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 Friday 1 October 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 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.