Thursday, 3 September 2009 - Monthly Climate Summary for South Australia - Product code IDCKGC23R0
Rainfall totals were mostly average in the southern areas tending to below average in parts, through the north-eastern areas of the state.
Rainfall totals were predominantly less than 10 mm, however on the southern fringes of the pastoral districts higher totals were experienced, with Nonning's total of 26.8 mm being the highest.
Rainfall totals were generally average across the southern agricultural areas, with most of the Western Agricultural, Murray Mallee and Mid North districts receiving below average.
Over the northern parts of the agricultural districts rainfall totals were between 10 and 25 mm gradually increasing to more than 100 mm in the southern and higher elevated parts of the state. The highest total being 164.8 mm at the Lenswood Research Station, in the Mount Lofty Ranges.
Across the longer term, rainfall for the growing season to date is generally average or above average across most of the agricultural districts, apart from the some areas of the Murray Mallee district. A few locations on the west coast of Eyre Peninsula are tracking in the wettest 15% of growing seasons on record, to the end of August.
The year to date rainfall is generally near average across most agricultural districts apart from in the east, while the remainder of the state is generally below average to the end of August.
Longer term rainfall deficiencies continue across 2 to 10 year rainfall averages for the South Australian agricultural areas and the Murray Darling Basin, which has seen below average rainfall continue through this year (See http://www.bom.gov.au/cgi-bin/silo/rain_maps.cgi ).
Looking at the August records since 1950, state-wide the monthly mean August temperature (the average of the maximum and minimum temperatures) was 2.0°C above the average for the South Australian agricultural areas. For South Australia as a whole the monthly mean August 2009 temperature was the highest on record with 3.1°C above average.
The mean maximum temperatures for August graded from 1°C above average in the Lower Southeast district to more than 4°C above average in the north of the state. Oodnadatta and Loxton recorded their highest average maximum temperatures for August.
In the Pastoral districts mean maximum temperatures ranged from 19.2°C at Yunta to 26.3°C at Oodnadatta Airport. Mean maximum temperatures over the Agricultural districts ranged from 11.9°C at Mount Lofty in the Mount Lofty Ranges to 22.1°C at Nullarbor.
The highest maximum recorded during August was 35.3°C at Oodnadatta Airport on the 15th of August. The lowest was 7.5°C at Mount Lofty on the 24th of August.
Similar to the maximum temperatures, the mean minimum temperatures for August were between about 1°C above average in the southern parts of the state and as high as 4°C above in the north. Many locations throughout the state, mainly in the northern areas, recorded their highest average minimum temperature for August with many others very close to being a record.
Mean minimum temperatures in the pastoral areas ranged from 5.5°C at Nonning to 10.9°C at Moomba Airport. Over the agricultural districts mean monthly minimum temperatures ranged from 3.8°C at Yongala to 12.1°C on Neptune Island.
The lowest minimum temperature recorded during August was −3.4°C at Yunta in the North East Pastoral district on the 8th. Moomba Airport recorded the warmest overnight temperature with 21.5°C on the 29th of August.
Some sites had their highest August temperature on record.
Some sites had their highest August mean daily maximum temperature on record.See a map of mean maximum temperatures. See a map of maximum temperature anomalies.
Some sites had their warmest August night (highest daily minimum temperature) on record.
Some sites had their highest August mean daily minimum temperature on record.See a map of mean minimum temperatures. See a map of minimum temperature anomalies.
|35.3°C at Oodnadatta Airport on the 15th|
|Warmest days on average|
Highest mean daily maximum temperature
|26.3°C at Oodnadatta Airport|
|Coolest days on average
Lowest mean daily maximum temperature
|11.9°C at Mount Lofty|
Lowest daily maximum temperature
|7.5°C at Mount Lofty on the 24th|
|−3.4°C at Yunta Airstrip on the 8th|
|Coolest nights on average|
Lowest mean daily minimum temperature
|3.8°C at Yongala|
|Warmest nights on average|
Highest mean daily minimum temperature
|12.1°C at Neptune Island|
Highest daily minimum temperature
|21.5°C at Moomba Airport on the 29th|
Highest total rainfall
|164.8 mm at Lenswood Research Centre|
|Highest wind gust||113 km/h at Cape Jaffa (The Limestone) on the 2nd|
|Record highest August temperature|
in August 2009 (°C)
|Hawker||30.0||on the 15th||= 30.0||on the 30th in 2007||36||17.7|
|Record highest August mean daily maximum temperature|
Mean daily maximum
for August 2009 (°C)
|Loxton Research Centre||20.2||19.9||in 2007||25||17.4|
|Record highest August daily minimum temperature|
Highest daily minimum
in August 2009 (°C)
|Neptune Island||15.7||on the 15th||15.6||on the 28th in 2005||48||11.1|
|Whyalla Aero||15.9||on the 21st||= 15.9||on the 16th in 2001||25||5.9|
|Record highest August mean daily minimum temperature|
Mean daily minimum
for August 2009 (°C)
|Robe Comparison||10.2||= 10.2||in 1949||123||8.5|
|Streaky Bay||10.5||= 10.5||in 1991||82||8.7|
|Woomera Aerodrome||8.7||8.6||in 1982||60||6.7|
|Oodnadatta Airport||10.8||9.7||in 1973||59||7.4|
|Leigh Creek Airport||7.9||7.6||in 1999||25||6.1|
|Loxton Research Centre||6.0||5.9||in 1984||25||4.2|
In this table, key sites have been highlighted to make them easier to find. This table is very wide and may not fit if printed.
|Summary statistics for August 2009|
|Northwest (district 16)|
|Coober Pedy Airport||24.0||33.2||15th||10.2||5.0||17th||2.6|
|Far North (district 17)|
|Leigh Creek Airport||21.3||+2.3||29.5||15th||7.9||+1.9||2.9||1st||11.0||15.4||average||71%|
|Western Agricultural (district 18)|
|Port Augusta Aero||21.8||31.6||15th||7.5||1.5||2nd||13.4|
|Upper North (district 19)|
|Northeast (district 20)|
|Lower North (district 21)|
|Clare High School||15.5||23.6||15th||5.5||0.2||8th||34.4|
|Port Pirie Aerodrome||19.9||27.6||15th||6.8||−0.5||8th||32.2|
|Port Pirie Nyrstar Comparison||20.2||+2.1||27.0||15th||9.6||+1.4||1.0||27th||32.7||34.9||average||94%|
|Yorke Peninsula (district 22A)|
|Kangaroo Island (district 22B)|
|Adelaide Plains (district 23A)|
|County Light (district 23B)|
|Mount Lofty Ranges (district 23°C)|
|Hindmarsh Island AWS||17.5||27.7||15th||8.8||2.9||8th||46.8|
|Kuitpo Forest Reserve||14.7||23.4||15th||8.0||3.6||8th||73.8|
|Mount Crawford Fire Tower||13.2||22.0||15th||7.2||4.4||8th||89.2|
|Upper Murray Valley (district 24A)|
|Loxton Research Centre||20.2||+2.8||29.4||15th||6.0||+1.8||−2.9||8th||15.0||27.3||average||55%|
|Lower Murray Valley (district 24B)|
|Murray Bridge Comparison||19.6||+2.1||29.0||15th||6.5||+0.6||−0.5||8th||33.6||36.8||average||91%|
|Murray Mallee (district 25A)|
|Upper Southeast (district 25B)|
|Lower Southeast (district 26)|
|Mount Gambier Aero||15.2||+1.1||21.7||15th||7.2||+1.8||4.2||22nd||137.2||94.0||high||146%|
This statement has been prepared based on information available at 8 am on Thursday 3 September 2009. 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.