Monday, 4 July 2011 - Monthly Climate Summary for South Australia - Product code IDCKGC23R0
South Australia in June 2011: A dry start to winter
- Average to below average rainfall across most of South Australia.
- Fourth wettest year to date rainfall following the wettest January to March period on record.
- Maximum temperatures up to 1°C above average.
- Minimum temperatures within 1°C of average.
South Australia has received close to 60% of the June rainfall average for the state as a whole, with most areas receiving average to below average rainfall.
South Australia has had its fourth wettest first half of the year on record. January to March this year was the wettest first 3 months of the year on record, but with below average rainfall in April, close to average rainfall in May 2011 and below average rainfall in June, the year to date state average has slipped to fourth place. The wettest first half of the year was in 1974.
The pastoral districts received most of their rainfall from the 5th to the 9th of June associated with a trough of low pressure in the middle levels of the atmosphere, and from the 20th to the 22nd in a moist westerly flow. Overall monthly rainfall totals were generally below average, with some locations, including Marree and Leigh Creek, not receiving any rainfall. Monthly totals generally ranged from about 0 to 10 mm. The wettest overall was Tieyon with 28.0 mm.
The passage of a series of cold fronts in the first and third week of June delivered most of the month’s rainfall to southern parts of the state when showers were generated in the cold, moist southerly flow following the passage of these fronts. Monthly rainfall totals were average to below average.
The Upper Murray Valley, Murray Mallee and Upper North districts received rainfall totals of up to10 to 20mm, the Western Agricultural, Lower North, Adelaide Plains, County Light, Yorke Peninsula, Lower Murray Valley and Upper Southeast received 20 to 50 mm, increasing to 40 to 90 mm over the Mount Lofty Ranges, Kangaroo Island and Lower Southeast districts. The wettest overall was at Parawa (Sharon) with 120.2 mm.
The mean temperature (the average of the maximum and minimum temperatures) for South Australia as a whole in June 2011 was 12.3 °C, which is 0.1 °C above the long-term average.
The area-averaged mean maximum temperature of 19.1°C was 0.5°C above the long-term June average for South Australia as a whole.
Mean maximum temperatures over South Australia were generally within 1.0°C of average across the state but tending just above average. In the Far North District, mean maximum temperatures reached up to 1.5°C above average. The coldest periods were around the 8th to the 11th of June where a strong high pressure system to the south of the Great Australian Bight directed a cool to cold southerly flow across the state; and the 21st also associated with a cool to cold southwesterly flow as a high pressure system moved across southern WA. Mount Lofty recorded the coldest day of the month on the 13th when its maximum temperature only reached 7.1°C. The warmest period was around the 2nd and 3rd of June (around the 5th in the Far North) in the northerly air stream ahead of a cold front; the warm northerly winds pushing the maximum temperature up to 27.5 °C at Nullarbor on the 2nd.
Average daily maximum temperatures over the pastoral districts ranged from 16.4°C at Yunta in the Northeast district to 21.6°C at Moomba Airport in the Far North district. The highest recorded maximum temperature for June was 27.1°C at Marla on the 3rd of the month. Leigh Creek had its equal highest June mean daily maximum temperature on record.
Average daily maximum temperatures across the agricultural areas ranged from 10.4°C at Mount Lofty to 19.4°C at Port Augusta Aero in the Western Agricultural District. The lowest recorded maximum temperature for June was 7.1°C at Mount Lofty on the 13th of the month, with the warmest day recorded was at Nullarbor with 27.5°C on the 2nd.
Mean minimum temperatures were generally within 1°C of average across South Australia when averaged across the whole of June. The coldest nights were around the 1st, and the 15th and 16th when conditions were fine and clear with light winds. The minimum temperature at Yunta fell to -4.4°C on the 15th. The warmest nights were from the 5th to the 7th of June in the Pastoral districts due to overnight cloud cover; and between the 3rd and 5th and around the 19th in the Agricultural districts also associated with increased cloud cover. It was also much warmer than average across the state on the night of the 29th/morning of the 30th with warm northerly winds and cloud cover ahead of an approaching cold front.
Over the pastoral districts average minimum temperatures ranged from 2.6°C at Yunta in the Northeast District to 8.0°C at Andamooka in the Northwest District. The lowest overnight minimum temperature in the pastorals for June was -4.4°C at Yunta on the 15th, whilst the highest was 14.0°C recorded at Leigh Creek Airport on the 30th.
Over the agricultural areas average overnight minimum temperatures ranged from 2.6°C at Yongala to 13.0°C at Neptune Island. The lowest recorded daily minimum temperature for June in the Agricultural districts was -4.1°C at Yongala on the 15th, whilst the highest was 14.7 °C at Neptune Island on the 26th and at Adelaide (Kent Town) on the 30th. This was the warmest June night in Adelaide since the 10th of June 2005 where 15.4°C was recorded.
|Extremes in June 2011|
|Hottest day||27.5 °C at Nullarbor on the 2nd|
|Warmest days on average||21.6 °C at Moomba Airport|
|Coolest days on average||10.4 °C at Mount Lofty|
|Coldest day||7.1 °C at Mount Lofty on the 13th|
|Coldest night||-4.4 °C at Yunta Airstrip on the 15th|
|Coolest nights on average||
2.6 °C at Yongala|
2.6 °C at Yunta Airstrip
|Warmest nights on average||13.0 °C at Neptune Island|
14.7 °C at Neptune Island on the 26th|
14.7 °C at Adelaide (Kent Town) on the 30th
|Warmest on average overall||14.6 °C at Neptune Island|
|Coolest on average overall||8.1 °C at Mount Lofty|
|Wettest overall||120.2 mm at Parawa (Sharon)|
|Highest wind gust||107 km/h at Robe Airfield on the 20th|
|Record lowest total June rainfall|
for June 2011 (mm)
|Marree Comparison||0.0||= 0.0||in 2006||126||13.5|
|Leigh Creek Airport||0.0||0.2||in 2007||27||16.1|
|Lowest total June rainfall for at least 25 years|
for June 2011 (mm)
Most recent June
at least this dry
|Record highest June mean daily maximum temperature|
Mean daily maximum
for June 2011 (°C)
|Leigh Creek Airport||18.5||= 18.5||in 1996||28||17.0|
|Summary statistics for June 2011|
|Northwest (district 16)|
|Coober Pedy Airport||18.7||26.3||3rd||6.4||0.6||13th||0|
|Marla Police Station||19.4||-0.3||27.1||3rd||-1.2||15th||6.4||14.3||average||45%|
|Roxby Downs (Olympic Dam Aerodrome)||19.3||24.7||3rd||3.3||-3.3||15th||0.8|
|Woomera Aerodrome||17.9||+0.6||24.8||3rd||5.8||-0.9||1.7||15th||0.8||15.8||v low||5%|
|Far North (district 17)|
|Leigh Creek Airport||18.5||+1.5||23.0||29th||5.2||-0.2||-0.4||16th||0||16.1||lowest||0%|
|Western Agricultural (district 18)|
|Coulta (Coles Point)||17.2||20.6||1st||7.8||2.7||15th||37.6|
|North Shields (Port Lincoln AWS)||17.1||20.1||1st||8.6||4.0||27th||35.0|
|Port Augusta Aero||19.4||23.9||29th||4.8||-1.2||15th||5.4|
|Upper North (district 19)|
|Northeast (district 20)|
|Gluepot Reserve (Gluepot)||17.7||22.5||26th||3.5||-3.1||28th||9.3|
|Lower North (district 21)|
|Clare High School||13.9||18.2||2nd||4.5||-1.4||15th||47.0|
|Port Pirie Aerodrome||17.7||22.4||29th||5.7||0.5||15th||21.4|
|Port Pirie Nyrstar Comparison||17.9||+0.8||22.5||29th||8.2||-0.2||2.5||15th||22.4||40.6||low||55%|
|Snowtown (Rayville Park)||16.6||20.7||2nd||5.8||-0.8||15th||28.8|
|Yorke Peninsula (district 22A)|
|Kangaroo Island (district 22B)|
|Adelaide Plains (district 23A)|
|Adelaide (Kent Town)||16.5||+0.4||20.6||2nd||8.5||+0.4||3.6||14th||37.2||79.3||low||47%|
|County Light (district 23B)|
|Rosedale (Turretfield Research Centre)||15.9||+0.3||21.2||2nd||5.4||-0.8||0.0||8th||46.7||56.1||average||83%|
|Mount Lofty Ranges (district 23C)|
|Hindmarsh Island AWS||16.1||20.3||2nd||8.6||3.0||29th||49.2|
|Kuitpo Forest Reserve||13.1||18.3||30th||7.5||4.4||14th||70.2|
|Mount Crawford (Mt Crawford AWS)||12.0||16.8||2nd||6.5||4.1||8th||40.4|
|Parawa (Second Valley Forest AWS)||12.8||16.1||29th||7.7||4.2||15th||109.6|
|Victor Harbor (Encounter Bay)||16.3||19.9||2nd||7.5||0.7||1st||79.0|
|Upper Murray Valley (district 24A)|
|Loxton Research Centre||17.2||+0.9||21.4||2nd||4.7||0.0||-0.5||1st||10.2||25.0||low||41%|
|Lower Murray Valley (district 24B)|
|Murray Bridge (Pallamana Aerodrome)||17.1||21.8||2nd||4.9||-1.5||15th||20.4|
|Murray Bridge Comparison||17.6||+0.9||22.6||2nd||5.9||-0.1||0.1||15th||29.9||37.8||average||79%|
|Murray Mallee (district 25A)|
|Upper Southeast (district 25B)|
|Lameroo (Austin Plains)||16.2||21.0||2nd||4.9||-0.1||15th||22.8|
|Lower Southeast (district 26)|
|Cape Jaffa (The Limestone)||15.2||17.5||2nd||7.6||-0.7||15th||61.0|
|Mount Gambier Aero||14.3||+0.5||18.8||2nd||6.2||+0.5||1.2||15th||84.6||83.0||average||102%|
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 3 pm on Monday 4 July 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.