Tuesday, 1 May 2007 - Monthly Climate Summary for South Australia - Product code IDCKGC13R0
Rainfall was generally above average to very much above average over South Australia mostly due to a widespread rainfall event in the last week of the month, while temperatures were mostly above average throughout the State.
Average to above average rainfall totals were reported over the Pastoral districts.
Totals varied widely across the Pastoral areas with the Northeast Pastoral district totals ranging from 14 to 34 mm, the Far North totals ranging between 0 and 31 mm and the Northwest Pastoral district ranging from 0 to 38 mm. The highest gauging for April over the pastoral districts was at Nonning, in the North West Pastoral district, with 38 mm.
Rainfall totals range from above average to very much above average rainfall over most of the Agricultural districts. Record highest April totals were reported from six stations over five districts throughout the Agricultural area. Much of the Lower Southeast reported average rainfall totals, with a small pocket of below average rainfall confined to an area between Beachport to Mount Gambier. A small pocket of average rainfall was confined to the eastern side of the Eyre Peninsula.
Rainfall totals between 10 and 25 mm were confined to small pockets in the Lower Southeast district. Totals between 25 and 50 mm were reported from much of the remainder of the state.Rainfall totals between 50 and 100 mm were reported from the west of Ceduna, the southern tip of Eyre Peninsula, Kangaroo Island, Yorke Peninsula, the southern half of the Lower North, most of the Adelaide Plains, County Light, Mount Lofty Ranges, Lower Murray Valley and parts of the Murray Mallee. Totals over 100 mm were reported from scattered sites over the Lower North, Yorke Peninsula, Kangaroo Island, Lower Murray Valley, Adelaide Plains and much of the County Light and most of the higher parts of the Mount Lofty Ranges. The highest rainfall total in the Agricultural Districts was 198 mm reported from Ashton, in the Mount Lofty Ranges.
Some sites had their highest total April rainfall on record.
Mean maximum temperatures were 1 to 3°C above normal over South Australia.
In the Pastoral districts, mean maximum temperatures ranged from 24.7°C at Yunta in the North East district, to 30.8°C at both Oodnadatta Airport and Marree, in the Far North district.
In the Agricultural districts, mean maxima ranged from 20.5°C at Parawa, in the Mount Lofty Ranges to 27.3°C at Port Augusta Aerodrome in the Western Agricultural district.
The highest maximum recorded during the month was 37.2°C at Oodnadatta Airport on the 20th, in the Far North district.
Mean minimum temperatures were generally 1 to 3°C of normal over South Australia.
In the Pastoral districts, mean minimum temperatures ranged from 9.7°C at Gluepot Station in the northeast district to 16.8°C at Moomba Airport in the Far North district. In the Agricultural districts mean minima ranged from 8.6°C at Coonawarra in the Lower Southeast, to 16.6°C at Neptune Island.The lowest minimum recorded during the month was 1.4°C at Coonawarra on the 26th.
Some sites had their highest April 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 April night (highest daily minimum temperature) on record.
Some sites had their highest April mean daily minimum temperature on record.See a map of mean minimum temperatures. See a map of minimum temperature anomalies.
|37.2°C at Oodnadatta Airport on the 20th|
|Warmest days on average|
Highest mean daily maximum temperature
30.8°C at Marree Comparison|
30.8°C at Oodnadatta Airport
|Coolest days on average|
Lowest mean daily maximum temperature
|20.5°C at Parawa (Second Valley Forest AWS)|
Lowest daily maximum temperature
|13.3°C at Mount Crawford Fire Tower on the 28th|
|1.4°C at Coonawarra on the 4th|
|Coolest nights on average|
Lowest mean daily minimum temperature
|8.6°C at Coonawarra|
|Warmest nights on average|
Highest mean daily minimum temperature
|16.8°C at Moomba Airport|
Highest daily minimum temperature
|24.1°C at Parafield Airport on the 10th|
Highest total rainfall
|197.8 mm at Ashton Marble Hill Orchard|
|Highest wind gust||87 km/h at Mount Crawford Fire Tower on the 28th|
|Record highest total April rainfall|
for April 2007 (mm)
|Edinburgh RAAF||101.8||79.0||in 1983||30.5||35|
|Record highest April mean daily maximum temperature|
Mean daily maximum
for April 2007 (°C)
|Cape Borda Comparison||21.2||= 21.2||in 2005||18.7||60|
|Neptune Island||21.1||20.8||in 1993||19.4||45|
|Cape Willoughby||21.2||21.1||in 1993||19.0||40|
|Record highest April mean daily minimum temperature|
Mean daily minimum
for April 2007 (°C)
|Streaky Bay||14.5||= 14.5||in 1971||12.7||81|
|Cape Borda Comparison||14.2||14.1||in 1971||12.3||60|
|Neptune Island||16.6||15.8||in 2005||14.9||46|
|Cape Willoughby||15.8||15.7||in 1980||14.0||40|
|Adelaide (Kent Town)||14.4||= 14.4||in 1980||12.3||31|
|Record highest April daily minimum temperature|
Highest daily minimum
in April 2007 (°C)
|Cape Borda Comparison||22.8||on the 11th||22.6||on the 11th in 1991||12.3||46|
In the following table, certain key sites have been highlighted to make them easier to identify.
|Summary statistics for April 2007|
|Northwest (district 16)|
|Coober Pedy Airport||28.3||+1.2||36.1||19th||15.5||+1.5||8.8||30th||10.6||6.4||high||166%|
|Marla Police Station||30.4||+1.8||36.0||20th||14.6||+1.1||4.5||29th||1.5||11.2||normal||13%|
|Far North (district 17)|
|Leigh Creek Airport||27.7||+1.6||33.1||20th||14.9||+2.1||9.9||30th||13.8||10.6||normal||130%|
|Western Agricultural (district 18)|
|Port Augusta Aero||27.3||35.6||14th||14.0||8.1||30th||24.2|
|Upper North (district 19)|
|Northeast (district 20)|
|Lower North (district 21)|
|Clare High School||22.8||+1.4||30.6||10th||10.6||+2.0||6.2||18th||89.8||32.6||highest||275%|
|Port Pirie Aerodrome||25.9||33.0||11th||13.1||8.2||18th||23.1|
|Port Pirie Zinifex Comparison||26.2||+1.4||33.5||11th||15.4||+2.3||10.2||7th||18.3||27.7||normal||66%|
|Yorke Peninsula (district 22A)|
|Kangaroo Island (district 22B)|
|Cape Borda AWS||21.5||30.3||11th||13.6||9.9||4th||128.4|
|Cape Borda Comparison||21.2||+2.5||29.0||11th||14.2||+1.9||10.0||6th||131.1||45.2||very high||290%|
|Adelaide Plains (district 23A)|
|Adelaide Airport||24.1||+2.0||32.7||10th||13.9||+2.2||9.2||7th||73.6||34.9||very high||211%|
|Parafield Airport||25.3||+2.8||33.5||13th||13.5||+1.7||5.6||22nd||83.2||39.5||very high||211%|
|County Light (district 23B)|
|Mount Lofty Ranges (district 23°C)|
|Hindmarsh Island AWS||23.1||33.7||10th||13.3||9.3||6th||49.6|
|Kuitpo Forest Reserve||21.5||+2.2||30.2||10th||12.8||+2.0||8.0||7th||117.6||59.0||high||199%|
|Mount Barker||23.5||+3.1||33.4||11th||10.5||+2.2||4.0||7th||112.6||58.6||very high||192%|
|Mount Crawford Fire Tower||21.1||+2.3||30.0||11th||12.3||+2.2||6.7||6th||141.6||40.4||highest||350%|
|Upper Murray Valley (district 24A)|
|Loxton Research Centre||25.6||+1.8||32.2||11th||9.6||+1.3||5.4||7th||34.2||16.5||high||207%|
|Lower Murray Valley (district 24B)|
|Murray Bridge Comparison||25.6||+2.2||35.3||11th||10.9||+0.7||7.0||6th||82.3||28.8||very high||286%|
|Murray Mallee (district 25A)|
|Upper Southeast (district 25B)|
|Lower Southeast (district 26)|
|Mount Gambier Aero||22.2||+2.8||30.7||10th||10.2||+1.5||5.4||4th||41.8||54.8||normal||76%|
This statement has been prepared based on information available at 2 pm on Tuesday 1 May 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 10 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.