Thursday, 1 November 2007 - Monthly Climate Summary for South Australia - Product code IDCKGC13R0
October rainfall was mostly average to very much below average over all of the state. Average maximum temperatures were significantly above average with the mean minimum temperatures near normal.
Rainfall over the Pastoral districts was mostly very much below average to average with isolated areas receiving very much above average rainfall. Most locations in the North West and Far North districts recorded between 5 and 10 mm of rain whilst some locations in the Northeast district recorded their highest October rainfall but most were in the above average range. The highest total in the Pastoral districts was 103.8 mm at Braemar, which was the highest recording in South Australia.
Rainfall totals over the Agricultural districts were generally average to below average. Totals were generally 25-50 mm in the Lower Eyre Peninsula, Mid-North districts, Yorke Peninsula, most of the Southeast district and the Central district, with the remainder agricultural districts receiving totals of 10-25 mm. Isolated heavy falls, caused by localised thunderstorms, were recorded in the Lower North district with totals of 99.6 mm at Georgetown and 90.6 mm at Laura. These were the highest totals in the agricultural districts during October.
Some sites had their highest total October rainfall on record.
Some sites had their lowest total October rainfall on record.
October average maximum temperatures were generally 1.5 to 2.5 °C above average across the state with several near coastal stations recording less than 1°C above their October average maximum temperatures.
In the pastoral districts, the maximum temperatures ranged from 25.8°C at Yunta in the Northeast district to 32.8°C at Oodnadatta and Moomba in the Far North district. The highest temperature recorded in the pastoral districts was 42.2 °C at Oodnadatta on the 27th.
Maximum temperatures over the agricultural districts ranged from 17.3°C at Parawa in the Mount Lofty Ranges to 28.5°C at Port Augusta in the Western Agricultural district. The warmest temperature in the agricultural districts was 41.1°C on the 20th at Ceduna.
Minimum temperatures were generally within 0.5°C of normal over the state, either above or below. Some locations recorded average minimum temperatures greater than 1°C above the normal.
Mean minimum temperatures in the pastoral districts ranged from 9.0°C at Gluepot in the North East district to 17.0°C at Marree in the Far North district. The lowest temperature recorded in the Pastoral districts was 1.3°C at Yunta on the 4th.
Mean minimum temperatures in the agricultural districts ranged from 5.4°C at Keith (Munkora) in the Upper Southeast district to 13.0°C at Port Pirie. The lowest temperature recorded in the agricultural districts was -2.6°C at Keith (Munkora) on the 8th.See a map of mean maximum temperatures. See a map of maximum temperature anomalies.
Some sites had their warmest October night (highest daily minimum temperature) on record.
Some sites had their highest October mean daily minimum temperature on record.See a map of mean minimum temperatures. See a map of minimum temperature anomalies.
On Tuesday, October 23rd thunderstorms over the Agricultural districts resulted in flash flooding at townships of Crystal Brook (50 mm in 30 minutes), Kadina (Kadina P.O. 45 mm in 90 minutes), Moonta (34 mm) and Quorn (15 mm). Creek flooding caused road closures at Booleroo Centre, Wirrabara, Tarcowie, and the Hawker to Wilpena Rd. Daily rainfall totals included Georgetown (75 mm), Braemar (96 mm), Paratoo (59 mm), Laura (64 mm). Rainfall observations from members of the public included 93 mm in 30 minutes near Port Broughton.
A deep and slow moving low-pressure system south of the Bight on Saturday 27th and Sunday 28th October produced damaging wind gusts and gale force winds over a large part of South Australia. This resulted in widespread tree damage with the SES receiving in excess of 400 calls for assistance over the weekend. A girl was hit by a falling tree in Whyalla on the Sunday and subsequently lost her life. Wind gust observations from both days included 109 km/h at Marree and Wudinna, 107 km/h at Woomera and Yunta, 106 km/h at Tarcoola, 96 km/h at Oodnadatta. There were numerous observations of 91-93 km/h gusts.
On Monday 29th October, as a consequence of the strong to gale force winds over the previous two days, the sea level at Osborne (near Inner Harbour) reached 3.5 m at around 6:00 am.
42.2 °C at Nullarbor on the 20th|
42.2 °C at Oodnadatta Airport on the 27th
|Warmest days on average|
Highest mean daily maximum temperature
32.8 °C at Moomba Airport|
32.8 °C at Oodnadatta Airport
|Coolest days on average|
Lowest mean daily maximum temperature
|17.3 °C at Parawa (Second Valley Forest AWS)|
Lowest daily maximum temperature
|11.6 °C at Kuitpo Forest Reserve on the 23rd|
|-2.6 °C at Keith (Munkora) on the 8th|
|Coolest nights on average|
Lowest mean daily minimum temperature
|5.4 °C at Keith (Munkora)|
|Warmest nights on average|
Highest mean daily minimum temperature
|17.0 °C at Marree Comparison|
Highest daily minimum temperature
|26.6 °C at Minnipa DPI on the 21st|
Highest total rainfall
|375.6 mm at Bellevue Heights Alert|
|Highest wind gust||
109 km/h at Marree Aero on the 27th|
109 km/h at Wudinna Aero on the 28th
|Record highest total October rainfall|
for October 2007 (mm)
|Record lowest total October rainfall|
for October 2007 (mm)
|Marree Comparison||0.0||= 0.0||in 2002||123||13.4|
|Lameroo Comparison||0.0||0.8||in 2006||109||37.6|
|William Creek||0.0||= 0.0||in 2002||83||11.5|
|Oodnadatta Airport||0.0||= 0.0||in 1982||59||13.9|
|Record highest October mean daily minimum temperature|
Mean daily minimum
for October 2007 (°C)
|Marree Comparison||17.0||15.9||in 1977||68||13.3|
|Record highest October daily minimum temperature|
Highest daily minimum
in October 2007 (°C)
|Nonning||21.4||on the 21st||21.2||on the 28th in 1977||38||9.4|
In the following table, certain key sites have been highlighted to make them easier to identify.
|Summary statistics for October 2007|
|Northwest (district 16)|
|Coober Pedy Airport||30.5||40.2||21st||14.3||7.2||29th||2.0|
|Far North (district 17)|
|Leigh Creek Airport||28.8||+2.4||37.6||20th||13.5||+1.2||5.6||13th||13.6||19.0||normal||72%|
|Western Agricultural (district 18)|
|Port Augusta Aero||28.5||39.9||21st||12.1||5.5||4th||4.2|
|Upper North (district 19)|
|Northeast (district 20)|
|Lower North (district 21)|
|Clare High School||22.5||35.3||21st||7.9||0.1||4th||32.0|
|Port Pirie Aerodrome||26.5||38.5||21st||11.5||4.0||4th||20.0|
|Port Pirie Nyrstar Comparison||26.4||+2.0||38.5||21st||13.0||+1.1||7.0||14th||20.4||33.1||normal||62%|
|Yorke Peninsula (district 22A)|
|Kangaroo Island (district 22B)|
|Adelaide Plains (district 23A)|
|County Light (district 23B)|
|Mount Lofty Ranges (district 23C)|
|Hindmarsh Island AWS||21.7||35.0||21st||10.8||5.4||17th||30.2|
|Kuitpo Forest Reserve||19.3||32.7||21st||9.0||5.2||8th||48.0|
|Mount Crawford Fire Tower||19.0||31.1||21st||7.9||3.5||17th||29.2|
|Upper Murray Valley (district 24A)|
|Loxton Research Centre||25.6||+1.8||38.4||21st||8.1||-0.2||2.0||9th||11.2||27.1||normal||41%|
|Lower Murray Valley (district 24B)|
|Murray Bridge Comparison||24.3||+1.7||38.4||21st||9.0||+0.1||2.2||9th||17.3||34.1||low||51%|
|Murray Mallee (district 25A)|
|Upper Southeast (district 25B)|
|Lower Southeast (district 26)|
|Mount Gambier Aero||18.4||+0.6||30.3||21st||7.3||+0.2||0.8||20th||49.4||62.2||normal||79%|
This statement has been prepared based on information available at 7 am on Thursday 1 November 2007. Some checks have been made on the data, but it is possible that results will change as new information becomes available.
Normals 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 "normal" 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,
normal in decile 4 to 7, high in decile 8 or 9
and very high is in decile 10).
The Fraction of normal shows how much rain has fallen this time as a percentage of the long-term mean.