Friday, 30 September 2011 - Monthly Climate Summary for South Australia - Product code IDCKGC13R0
South Australia in September 2011: A Warm and Dry start to Spring.
- Above average maximum temperatures keep days warm across the State while slightly below average minimum temperatures keep nights cool in southeast districts.
- Despite a wet finish to September, much of the State received very much below average rainfall.
Apart from the far northeast of the South Australia receiving above average rainfall this September, rainfall totals were generally below average across most districts, particularly across central districts and in the southeast of the State. Rainfall totals were predominantly less than 10mm across the northern pastoral districts, whilst western and southern agricultural areas received between 20 to 50 mm.
Some locations recorded only around 50% of the September average totals. The highest September total recorded in the pastoral regions was at Yardea, with 33 mm, which is about 115% of the September average that this site receives.
Rainfall totals were generally below average across agricultural districts during September. Rainfall totals were typically around 20 to 40mm for most agricultural districts, Higher totals of 50 to 60mm were recorded at most stations through the Lower Southeast. Totals ranged from 60 to 100mm in the Mt Lofty Ranges. The highest total for the state was 125.2mm recorded at Echunga in the Adelaide Hills.Some sites had their lowest total September rainfall on record. Some sites had their lowest total September rainfall for at least 25 years. See a map of rainfall deciles.
September temperatures across South Australia were above the long term average, apart from the far northwest and far northeast were the average temperature was only slightly below the long term average. The September average temperature for South Australia was 1.4 °C warmer than the long term September average of 15.3 °C.
Maximum temperatures were above average this September with some parts being up to 3°C warmer than the average September maximums. Average maximum temperatures ranged from 14.9 °C at Mount Lofty in the Mount Lofty Ranges to 28.5 °C at Moomba Airport in the far northeast of the State.
The warmest September daily maximum temperature was 37.2°C recorded at Marla in the far northwest on the 27th of September. The coldest daily maximum was 7.9 °C at Mount Lofty on the 10th of September.
Minimum temperatures were slightly below the long-term average this September. Mean minimum temperatures for the month ranged from 3.2°C at Yongala in the Upper North District to 12.3°C on Neptune Island.
The lowest overnight winter minimum temperature recorded was -3.6 °C at Yongala on the 7th of September. The highest minimum temperature recorded was 21.8°C at Marree Aerodrome on the 28nth of September.Some sites had their highest September mean daily maximum temperature for at least 25 years.
|Extremes in September 2011|
|Hottest day||37.2 °C at Marla Police Station on the 27th|
|Warmest days on average||28.5 °C at Moomba Airport|
|Coolest days on average||14.9 °C at Mount Lofty|
|Coldest day||7.9 °C at Mount Lofty on the 10th|
|Coldest night||-3.6 °C at Yongala on the 7th|
|Coolest nights on average||3.2 °C at Yongala|
|Warmest nights on average||12.3 °C at Neptune Island|
|Warmest night||21.8 °C at Marree Aero on the 28th|
|Warmest on average overall||19.9 °C at Oodnadatta Airport|
|Coolest on average overall||10.7 °C at Mount Lofty|
|Wettest overall||125.2 mm at Echunga|
|Highest wind gust||117 km/h at Neptune Island on the 19th|
|Record lowest total September rainfall|
for September 2011 (mm)
|Oodnadatta Airport||0.0||= 0.0||in 2007||63||10.1|
|Andamooka||0.0||= 0.0||in 2007||47||13.1|
|Lowest total September rainfall for at least 25 years|
for September 2011 (mm)
Most recent September
at least this dry
|Port Pirie Nyrstar Comparison||3.8||2.5||in 1882||128||35.3|
|Goolwa Council Depot||14.4||10.4||in 1951||60||48.1|
|Swan Reach||4.6||4.0||in 1980||31||28.2|
|Highest September mean daily maximum temperature for at least 25 years|
Mean daily maximum
for September 2011 (°C)
Most recent September
at least this warm
|Cape Willoughby||17.7||18.0||in 1980||31||15.8|
|Record highest September daily minimum temperature|
Highest daily minimum
in September 2011 (°C)
|Price||20.0||on the 19th||17.2||on the 19th in 2006||47||7.3|
|Summary statistics for September 2011|
|Northwest (district 16)|
|Coober Pedy Airport||26.5||36.3||27th||11.2||5.7||7th||0.2|
|Marla Police Station||27.4||+0.7||37.2||27th||9.2||-1.6||2.6||12th||0.2||10.9||low||2%|
|Roxby Downs (Olympic Dam Aerodrome)||26.1||36.8||27th||9.1||1.5||7th||6.0|
|Far North (district 17)|
|Leigh Creek Airport||25.4||+2.3||34.8||27th||9.4||+0.1||3.0||13th||1.8||19.0||low||9%|
|Western Agricultural (district 18)|
|Coulta (Coles Point)||19.7||25.8||15th||9.0||3.1||25th||41.2|
|North Shields (Port Lincoln AWS)||20.4||27.2||18th||7.5||3.2||13th||36.8|
|Port Augusta Aero||25.9||36.4||27th||8.1||1.7||13th||8.0|
|Upper North (district 19)|
|Northeast (district 20)|
|Gluepot Reserve (Gluepot)||23.8||34.5||17th||5.3||-1.5||1st||2.9|
|Lower North (district 21)|
|Clare High School||19.4||29.9||27th||6.3||-0.5||7th||15.8|
|Port Pirie Aerodrome||23.7||33.5||17th||7.3||0.1||13th||4.0|
|Port Pirie Nyrstar Comparison||23.7||+2.4||34.0||27th||11.0||+1.2||5.1||5th||3.8||35.3||v low||11%|
|Snowtown (Rayville Park)||22.1||32.0||27th||4.7||-0.6||13th||15.4|
|Yorke Peninsula (district 22A)|
|Kangaroo Island (district 22B)|
|Adelaide Plains (district 23A)|
|Adelaide (Kent Town)||20.8||+1.9||31.5||27th||10.2||+0.5||5.0||12th||46.8||60.2||low||78%|
|County Light (district 23B)|
|Rosedale (Turretfield Research Centre)||20.7||+2.5||31.7||27th||6.2||-0.4||0.6||13th||31.6||53.5||low||59%|
|Mount Lofty Ranges (district 23C)|
|Hindmarsh Island AWS||20.6||31.5||27th||9.3||5.0||25th||26.2|
|Kuitpo Forest Reserve||17.6||28.1||27th||8.1||4.5||25th||85.4|
|Mount Crawford (Mt Crawford AWS)||16.6||26.9||27th||7.3||3.0||25th||62.2|
|Parawa (Second Valley Forest AWS)||16.0||24.6||27th||8.3||5.5||7th||73.0|
|Victor Harbor (Encounter Bay)||19.9||29.8||27th||6.8||0.9||13th||48.8|
|Upper Murray Valley (district 24A)|
|Loxton Research Centre||22.3||+1.7||33.8||17th||6.0||-0.3||-0.1||7th||6.8||26.8||v low||25%|
|Lower Murray Valley (district 24B)|
|Murray Bridge (Pallamana Aerodrome)||21.3||32.6||27th||4.8||-0.9||5th||32.0|
|Murray Bridge Comparison||22.2||+2.4||33.2||17th||7.1||-0.1||1.6||1st||36.3||36.8||average||99%|
|Murray Mallee (district 25A)|
|Upper Southeast (district 25B)|
|Lameroo (Austin Plains)||21.2||32.8||17th||4.3||-1.6||25th||27.8|
|Lower Southeast (district 26)|
|Cape Jaffa (The Limestone)||17.3||27.5||27th||8.4||3.8||25th||44.8|
|Mount Gambier Aero||17.2||+1.4||24.5||27th||7.0||+0.7||-0.3||8th||57.4||72.8||low||79%|
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 2 pm on Friday 30 September 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.