Friday, 1 June 2012 - Seasonal Climate Summary for South Australia - Product code IDCKGC13R0
South Australia in autumn 2012: Cool nights with average autumn rainfall
- Autumn 2012 rainfall near average as the La Niña influence from the Pacific Ocean ends in early autumn.
- Near average daytime temperatures, but coldest autumn nights since 1995 for the State.
Autumn 2012 rainfall was near average across the State as a whole; northern and eastern parts of South Australia received above average rainfall while southern and coastal areas received average to below average rainfall totals. See a map of rainfall deciles. The La Niña event in the Pacific Ocean rapidly weakened in early autumn, with conditions in the Pacific returning to neutral toward the end of March. Rainfall totals were well above average across much the State in March owing to the influence of La Niña. However, as conditions in the Pacific returned to neutral, rainfall through April and May tended average to below average.
The most significant rainfall event for autumn occurred in early March. A low pressure surface trough that had combined with a slow moving upper level trough and a moist tropical airmass over the Northeast of the State in late February, resulted in heavy rainfall being reported across north eastern districts into early March resulting in flash flooding and road closures for parts in the Northeast of the State. Moomba Airport reported 90.4mm in the 24 hours to 9 am on March 3rd, with 65mm falling a 3 hour period. Moomba (Tirrawarra) had the wettest day in autumn on the 3rd, reporting a 24 hour total of 93.0 mm.
Much of April and May saw little tropical activity to produce widespread rain events for the start of the growing season. A low pressure system a few days before Anzac Day produced 20 to 30mm across Lower Eyre and Yorke Peninsulas', Kangaroo Island and parts of the Mount Lofty Ranges, but much of the agricultural area saw little rainfall until the last two weeks of May when much of the agricultural areas received 20 to 40mm of rainfall.
Rainfall totals for autumn as a whole were average to above average in the pastoral districts, with some areas in the Far North District receiving more than 40% more rainfall their long-term autumn average. Rainfall totals ranged from around 30 to 60mm, with higher totals at some locations of over 90mm. Moomba Airport had the highest rainfall total in the Pastorals this autumn with 148.6 mm.
Rainfall totals in the agricultural districts were average to below average in the west, and slightly above average across the parts in the southeast. Rainfall totals ranged from 60 mm to 100 mm in the Western Agricultural and Upper North districts, increasing to about 90 mm to 150 mm elsewhere, while some locations in the Mount Lofty Ranges received over 200 mm. The wettest location in the Agricultural districts was Happy Valley Reservoir (Saw) in the Mount Lofty ranges with 341.0 mm.Some sites had their highest total autumn rainfall for at least 25 years. Some sites had their highest autumn daily rainfall on record.
Temperatures across South Australia were near average during autumn 2012. Averaged across the State as whole, the autumn daily average temperature for South Australia was 0.3 °C cooler than the long term autumn average. By comparison, autumn 2011 was nearly 1 °C cooler than average. The warmest autumn for South Australia was recorded in 2005 where temperatures were 1.9 °C above the long term average.
Maximum temperatures were just below the long-term averaged across South Australia as a whole of autumn 2012. In March, maximum temperatures were up to 4°C below average across some parts of South Australia. Conditions tended warmer than average through April where average maximum temperatures were within 1°C above average, and again in May average maximums were up to 0.7°C above the long-term average. See a map of maximum temperature anomalies.
Average maximum temperatures ranged from 17.1°C at Mount Lofty to 28.3°C at Marree Comparison in the Far North. The hottest autumn day in was on April 2nd with 40.0°C at Marla Police Station. The coldest day was 6.3°C at Mount Lofty on the 24th of May. Several other locations had a record lowest autumn daily maximum on this day; this includes Eudunda, which had its coldest autumn day in 44 years of only 8°C.
Some sites had their coldest autumn day (lowest maximum temperature) on record.
Over night minimum temperatures through autumn 2012 across South Australia have been the coolest since 1995. Averaged across the State as a whole, minimum temperatures were 0.7 °C cooler than normal, with all but the southeast coast having slightly warmer nights. In March, minimum temperatures were up to 3 °C below average across most parts of South Australia. Night time conditions tended to near normal through April where average minimum temperatures were within 0.3°C above average. A return to much cooler over night conditions through May resulted in some locations reporting minimum temperatures near 4°C below average. See a map of minimum temperature anomalies.
Minimum temperatures ranged from 6.7°C at Yongala in the Upper North to 15.4°C at Neptune Island. The lowest recorded minimum temperature was -3.0°C at Yongala on the 16th of May and the warmest night was 26.0 °C at Ceduna AMO on the west coast on March 14th.Some sites had their lowest autumn mean daily minimum temperature for at least 25 years.
|Extremes in autumn 2012|
|Hottest day||40.0 °C at Marla Police Station on 2 Apr|
|Warmest days on average||28.3 °C at Marree Comparison|
|Coolest days on average||17.1 °C at Mount Lofty|
|Coldest day||6.3 °C at Mount Lofty on 24 May|
|Coldest night||-3.0 °C at Yongala on 16 May|
|Coolest nights on average||6.7 °C at Yongala|
|Warmest nights on average||15.4 °C at Neptune Island|
|Warmest night||26.0 °C at Ceduna AMO on 14 Mar|
|Warmest on average overall||20.9 °C at Moomba Airport|
|Coolest on average overall||13.4 °C at Mount Lofty|
|Wettest overall||341.0 mm at Adelaide (Happy Valley Resv (Saw))|
|Driest overall||1.4 mm at South Para Resv (Saw)|
|Wettest day||93.0 mm at Moomba (Tirrawarra) on 3 Mar|
|Highest wind gust||
100 km/h at Cape Willoughby on 1 Mar|
100 km/h at Snowtown (Rayville Park) on 14 Mar
100 km/h at Cape Willoughby on 23 May
|Record highest autumn daily rainfall|
Highest daily rainfall
in autumn 2012 (mm)
|Renmark Irrigation||70.0||on 1 Mar||46.5||on 17 Mar 1950||95|
|Berri||68.4||on 1 Mar||35.0||on 8 May 1992||52|
|Wilpena (Martins Well)||32.0||on 1 Mar||30.0||on 13 May 2003||34|
|Highest total autumn rainfall for at least 25 years|
for autumn 2012 (mm)
Most recent autumn
at least this wet
|Goolwa Council Depot||205.0||205.1||in 1971*||39||112.3|
|Murray Bridge Comparison||161.5||205.4||in 1983||29||84.7|
* note: there are gaps in the historical record at this site, so it is possible a higher value has gone unreported.
|Record lowest autumn daily maximum temperature|
Lowest daily maximum
in autumn 2012 (°C)
|Port Pirie Nyrstar Comparison||11.7||on 24 May||= 11.7||on 18 May 1981||56||24.9|
|Cleve||9.9||on 24 May||11.4||on 27 May 2000||55||22.5|
|Keith||10.2||on 24 May||= 10.2||on 27 May 2000||51||22.5|
|Eudunda||8.0||on 24 May||8.2||on 18 May 1968||48||21.3|
|Kimba||10.5||on 24 May||10.6||on 22 May 1969||45||23.7|
|Hawker||9.0||on 24 May||= 9.0||on 22 May 1990||39||25.2|
|Whyalla Aero||11.8||on 24 May||12.1||on 23 May 2006||27||23.9|
|Lowest autumn mean daily minimum temperature for at least 25 years|
Mean daily minimum
for autumn 2012 (°C)
Most recent autumn
at least this cool
* note: there are gaps in the historical record at this site, so it is possible a lower value has gone unreported.
|Summary statistics for autumn 2012|
|Northwest (district 16)|
|Andamooka||26.6||-0.7||38.0||2 Apr||13.7||-0.3||5.0||16 May||15.4||44.1||low||35%|
|Coober Pedy Airport||26.6||38.3||14 Mar||13.5||3.2||30 May||48.4|
|Ernabella (Pukatja)||25.7||37.0||4 Apr||11.4||0.8||23 May||78.0|
|Roxby Downs (Olympic Dam Aerodrome)||26.5||37.6||2 Apr||10.9||-0.4||4 May||44.0|
|Tarcoola Aero||26.7||39.6||14 Mar||11.0||0.6||22 May||28.2|
|Woomera Aerodrome||25.7||+0.2||37.7||2 Apr||12.7||-0.4||4.6||16 May||38.2||43.4||average||88%|
|Far North (district 17)|
|Arkaroola||24.1||-1.0||35.0||3 Apr||9.7||-1.6||0.0||4 May||74.0||62.6||high||118%|
|Leigh Creek Airport||25.6||-0.6||35.5||2 Apr||11.8||-1.2||2.3||4 May||89.6||48.4||high||185%|
|Marree Aero||27.4||36.9||2 Apr||12.5||1.3||29 May||29.4|
|Marree Comparison||28.3||-0.2||37.2||2 Apr||2.1||29 May||31.0||38.5||average||81%|
|Moomba Airport||28.2||39.5||3 Apr||13.5||3.7||26 May||148.6|
|Oodnadatta Airport||27.9||-0.5||38.4||31 Mar||13.3||-1.2||2.7||30 May||22.4||38.2||average||59%|
|Western Agricultural (district 18)|
|Ceduna AMO||24.7||+0.8||38.6||13 Mar||10.4||-0.4||1.4||4 May||32.8||67.7||low||48%|
|Cleve||22.9||+0.4||35.7||5 Apr||12.6||+0.3||5.9||25 May||107.0||90.9||high||118%|
|Cleve Aerodrome||22.9||36.4||13 Mar||12.2||6.2||24 May||87.8||85.0||average||103%|
|Coulta (Coles Point)||22.1||+0.1||33.1||13 Mar||11.7||-0.1||4.9||15 May||122.8|
|Cummins Aero||23.5||37.0||13 Mar||9.6||1.3||15 May||78.0|
|Elliston||22.4||+0.4||34.4||30 Mar||12.2||-0.1||5.9||15 May||106.2||94.7||average||112%|
|Kimba||23.5||-0.2||35.5||2 Apr||10.8||-0.4||3.8||16 May||69.4||74.8||average||93%|
|Kyancutta||25.6||+0.2||37.5||13 Mar||9.8||+0.1||1.4||4 May||50.9||66.2||average||77%|
|Minnipa Pirsa||24.3||36.7||2 Apr||11.7||5.5||28 May||61.6|
|Neptune Island||20.1||+0.7||26.5||2 Apr||15.4||+0.5||10.0||24 May||76.2||105.8||low||72%|
|North Shields (Port Lincoln AWS)||22.7||36.3||20 Mar||12.2||4.8||16 May||64.4|
|Nullarbor||24.6||+0.4||38.8||30 Mar||11.0||-0.5||1.7||31 May||23.8||73.5||low||32%|
|Port Augusta Aero||25.8||38.2||2 Apr||11.3||1.7||22 May||91.2|
|Streaky Bay||24.3||+0.7||35.7||13 Mar||12.8||0.0||5.5||28 May||69.4||83.6||average||83%|
|Whyalla Aero||23.8||-0.1||38.2||2 Apr||11.8||-0.2||2.3||16 May||88.8||66.7||high||133%|
|Wudinna Aero||25.4||38.0||13 Mar||10.0||1.6||11 Apr||55.8|
|Upper North (district 19)|
|Hawker||25.0||-0.2||35.0||2 Apr||9.8||-1.2||-0.3||13 May||60.8||66.9||average||91%|
|Yongala||22.2||+0.1||32.6||2 Apr||6.7||-0.8||-3.0||16 May||78.7||76.2||average||103%|
|Northeast (district 20)|
|Gluepot Reserve (Gluepot)||24.6||35.5||14 Mar||8.1||-2.1||16 May||87.5|
|Yunta Airstrip||24.0||34.8||2 Apr||8.5||-2.4||16 May||41.6|
|Lower North (district 21)|
|Clare High School||21.4||33.0||14 Mar||8.4||-0.9||16 May||130.0|
|Port Pirie Aerodrome||24.6||36.5||2 Apr||10.8||2.5||16 May||105.1|
|Port Pirie Nyrstar Comparison||24.6||-0.3||35.5||5 Apr||13.3||0.0||5.5||21 May||104.8||84.0||high||125%|
|Snowtown (Rayville Park)||24.1||36.2||14 Mar||9.3||0.1||15 May||83.6|
|Yorke Peninsula (district 22A)|
|Edithburgh||21.6||34.8||20 Mar||12.9||5.0||21 May||77.0|
|Kadina AWS||23.8||35.7||13 Mar||9.8||0.9||16 May||87.8|
|Maitland||22.4||+0.3||34.7||13 Mar||12.6||+0.3||5.5||21 May||127.0||126.6||average||100%|
|Minlaton Aero||22.3||35.8||14 Mar||11.8||5.3||4 May||96.8|
|Stenhouse Bay||21.5||33.6||5 Apr||14.0||7.5||16 May||101.4|
|Warooka||22.1||+0.3||32.4||13 Mar||12.6||+0.1||6.4||25 May||86.0||103.6||average||83%|
|Kangaroo Island (district 22B)|
|Cape Borda||19.6||27.9||13 Mar||12.5||7.2||24 May||142.8|
|Cape Willoughby||19.6||+0.7||29.8||14 Mar||14.6||+0.5||9.0||24 May||111.8||122.6||average||91%|
|Kingscote Aero||22.0||32.2||14 Mar||9.3||1.7||31 May||99.6|
|Parndana Cfs AWS||20.6||32.5||13 Mar||10.2||4.1||25 May||139.4|
|Adelaide Plains (district 23A)|
|Adelaide (Kent Town)||22.9||+0.3||35.0||13 Mar||12.3||-0.3||4.6||16 May||153.0||126.5||average||121%|
|Adelaide Airport||22.3||+0.3||34.8||14 Mar||11.8||-0.1||3.8||16 May||132.6||111.3||high||119%|
|Edinburgh RAAF||23.1||+0.1||36.0||14 Mar||11.4||-0.4||2.7||16 May||129.2||101.4||high||127%|
|Parafield Airport||23.5||+0.7||36.3||14 Mar||10.9||-1.0||2.6||16 May||132.8||110.1||average||121%|
|Roseworthy AWS||23.8||36.9||14 Mar||10.2||0.7||20 May||96.8|
|County Light (district 23B)|
|Nuriootpa Viticultural||21.9||33.5||14 Mar||8.3||-1.8||16 May||86.0|
|Rosedale (Turretfield Research Centre)||23.5||+0.5||36.2||14 Mar||10.1||-0.7||0.0||20 May||96.3||110.2||average||87%|
|Mount Lofty Ranges (district 23C)|
|Hindmarsh Island AWS||21.6||35.9||14 Mar||12.7||5.3||16 May||165.8|
|Kuitpo Forest Reserve||19.4||32.7||14 Mar||11.1||4.8||16 May||213.2|
|Mount Barker||20.2||-0.3||33.0||14 Mar||9.2||+0.7||0.0||16 May||226.6||177.8||high||127%|
|Mount Crawford (Mt Crawford AWS)||19.3||32.0||14 Mar||10.6||4.1||25 May||139.4|
|Mount Lofty||17.1||30.1||14 Mar||9.6||3.0||24 May||236.4|
|Noarlunga||21.8||33.9||5 Apr||13.2||7.1||3 May||161.8|
|Parawa (Second Valley Forest AWS)||18.6||31.5||14 Mar||11.5||5.4||24 May||217.0|
|Victor Harbor (Encounter Bay)||21.4||35.9||14 Mar||10.6||1.9||16 May||137.6|
|Upper Murray Valley (district 24A)|
|Loxton Research Centre||23.9||+0.1||35.2||14 Mar||8.6||-0.3||-1.4||16 May||67.8||52.1||high||130%|
|Renmark Aero||24.3||35.2||14 Mar||8.4||-1.9||16 May||81.8|
|Lower Murray Valley (district 24B)|
|Eudunda||21.7||+0.4||33.0||13 Mar||9.9||0.0||1.7||16 May||103.6||98.9||average||105%|
|Meningie||22.1||+0.7||34.0||13 Mar||11.1||+0.4||2.1||16 May||147.5||114.4||high||129%|
|Murray Bridge (Pallamana Aerodrome)||23.2||36.1||14 Mar||9.3||-1.3||16 May||130.4|
|Murray Bridge Comparison||23.8||+0.6||35.8||13 Mar||10.5||+0.1||1.0||16 May||161.5||84.7||v high||191%|
|Strathalbyn Racecourse||21.9||35.8||14 Mar||11.1||3.3||16 May||154.6|
|Murray Mallee (district 25A)|
|Karoonda||23.2||35.4||14 Mar||9.3||-0.7||16 May||104.9||77.4||high||136%|
|Upper Southeast (district 25B)|
|Keith||22.6||+0.1||35.2||14 Mar||9.9||+0.4||0.0||20 May||121.4||106.7||average||114%|
|Keith (Munkora)||23.1||37.5||14 Mar||8.5||-1.8||20 May||111.6|
|Lameroo (Austin Plains)||23.1||36.1||14 Mar||8.8||1.2||20 May||79.6|
|Lameroo Comparison||23.2||+0.2||35.6||14 Mar||9.8||+0.6||2.9||21 May||82.0||85.5||average||96%|
|Lower Southeast (district 26)|
|Cape Jaffa (The Limestone)||20.2||+0.5||34.4||14 Mar||11.4||+0.8||4.3||17 May||127.6|
|Coonawarra||21.3||+0.3||33.5||13 Mar||8.7||+0.5||1.0||17 May||84.0||116.3||low||72%|
|Mount Gambier Aero||20.5||+1.0||34.8||14 Mar||9.4||+0.6||2.1||17 May||167.2||160.2||average||104%|
|Naracoorte Aerodrome||21.8||34.9||14 Mar||9.1||0.8||16 May||83.0|
|Padthaway South||21.8||35.2||14 Mar||8.6||-0.8||16 May||102.8|
|Robe Airfield||20.4||35.6||14 Mar||10.2||1.5||13 Apr||144.8|
|Robe Comparison||19.5||+0.7||30.0||14 Mar||12.5||+1.0||6.6||16 May||165.8||146.0||average||114%|
A Seasonal 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 June 2012. 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.