Tuesday, 1 May 2007 - Monthly Climate Summary for South Australia - Product code IDCKGC13R0

South Australia in April 2007
Widespread Rain To Finish Month

Summary

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.

Rainfall

Pastoral Districts

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.

Agricultural Districts

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.

See a map of total rainfall. See a map of rainfall deciles.

Temperature

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.

Further information

South Australian Regional Office
South Australian Climate Services Centre
Bureau of Meteorology
Phone (08) 8366 2600
Email climate.sa@bom.gov.au

Extremes

Hottest day
Highest temperature
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)
Coldest day
Lowest daily maximum temperature
13.3°C at Mount Crawford Fire Tower on the 28th
Coldest night
Lowest temperature
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
Warmest night
Highest daily minimum temperature
24.1°C at Parafield Airport on the 10th
Wettest overall
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

Records

Record highest total April rainfall
Total rainfall
for April 2007 (mm)
Previous highest
for April
Normal for
April
Years of
record
Booborowie 125.4 123.2 in 1974 28.2 83
Peebinga 80.8 74.2 in 1974 23.1 53
Freeling 110.2 109.0 in 1971 35.4 44
Edinburgh RAAF 101.8 79.0 in 1983 30.5 35



Record highest April mean daily maximum temperature
Mean daily maximum
temperature
for April 2007 (°C)
Previous highest
for April
Normal for
April
Years of
record
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
temperature
for April 2007 (°C)
Previous highest
for April
Normal for
April
Years of
record
Streaky Bay 14.5 = 14.5 in 1971 12.7 81
Cleve 14.3 14.0 in 2005 12.2 67
Cape Borda Comparison 14.2 14.1 in 1971 12.3 60
Maitland 14.5 14.4 in 2005 12.3 51
Warooka 14.1 13.7 in 1981 12.4 47
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
Arkaroola 13.9 13.4 in 2005 10.9 30



Record highest April daily minimum temperature
Highest daily minimum
temperature
in April 2007 (°C)
Previous highest
for April
Normal for
April
Years of
record
Cape Borda Comparison 22.8 on the 11th 22.6 on the 11th in 1991 12.3 46


Summaries

 In the following table, certain key sites have been highlighted to make them easier to identify.

Summary statistics for April 2007
Maximum temperatures
for April
(°C)
Minimum temperatures
for April
(°C)
Rainfall
for April
(millimetres)
Mean for
April
2007
Diff
from
normal
Highest for
April
2007
Mean for
April
2007
Diff
from
normal
Lowest for
April
2007
Total for
April
2007
Normal
for
April
Rank of
April
2007
Fraction of
April
normal
Northwest (district 16)
Andamooka 28.7 +1.4 34.7 20th 15.3 +1.4 10.4 30th 8.8 12.9 normal 68%
Coober Pedy Airport 28.3 +1.2 36.1 19th 15.5 +1.5 8.8 30th 10.6 6.4 high 166%
Ernabella 27.5 32.0 20th 14.3 8.8 29th 0.0
Marla Police Station 30.4 +1.8 36.0 20th 14.6 +1.1 4.5 29th 1.5 11.2 normal 13%
Nonning 25.2 +0.3 32.8 10th 12.8 +2.2 6.9 30th 38.2 14.9 very high 256%
Roxby Downs 27.9 +0.6 34.1 20th 14.1 +1.8 8.8 1st 10.8 9.0 normal 120%
Tarcoola Aero 27.6 +0.6 35.6 14th 14.0 +2.1 7.1 30th 21.6 9.7 high 223%
Woomera Aerodrome 27.2 +1.7 33.9 14th 14.9 +1.9 9.6 30th 14.6 11.3 high 129%
Far North (district 17)
Arkaroola 26.4 +1.3 33.7 20th 13.9 +2.9 8.4 2nd 8.8 14.6 normal 60%
Leigh Creek Airport 27.7 +1.6 33.1 20th 14.9 +2.1 9.9 30th 13.8 10.6 normal 130%
Marree Aero 30.0 35.5 20th 15.3 9.3 30th 1.4
Marree Comparison 30.8 +2.4 36.6 20th 15.0 +1.8 10.2 30th 1.5 10.8 normal 14%
Moomba Airport 30.2 +1.0 34.9 20th 16.8 +1.0 10.7 30th 2.4 7.8 normal 31%
Oodnadatta Airport 30.8 +2.3 37.2 20th 16.5 +2.2 8.8 30th 0.4 11.2 normal 4%
Western Agricultural (district 18)
Ceduna AMO 26.3 +2.2 36.3 10th 12.9 +2.3 7.3 30th 37.6 19.6 high 192%
Cleve 24.3 +1.6 35.0 10th 14.3 +2.1 10.7 7th 27.8 28.9 normal 96%
Cleve Aerodrome 24.1 +0.8 33.7 10th 14.1 +2.2 9.7 7th 26.2 25.9 normal 101%
Coulta 23.6 +1.6 34.2 10th 13.2 +1.7 8.4 20th 33.8 18.1 high 187%
Elliston 24.2 +2.0 35.0 10th 13.9 +1.9 9.0 19th 38.4 27.4 high 140%
Kimba 25.3 +1.3 33.6 11th 13.0 +1.8 7.4 30th 37.2 22.3 high 167%
Kyancutta 26.6 +1.3 34.9 11th 12.0 +2.6 7.0 18th 36.6 19.5 high 188%
Minnipa DPI 25.4 +0.3 33.5 10th 13.7 +2.1 9.4 22nd 17.0 10.9 high 156%
Neptune Island 21.1 +1.6 26.2 11th 16.6 +1.7 14.8 28th 28.2 31.5 normal 90%
North Shields 23.6 +1.6 35.6 10th 14.1 +2.0 9.7 20th 31.2 15.6 high 200%
Nullarbor 25.8 +1.1 36.1 16th 12.9 +1.5 8.1 18th 63.6 22.3 very high 285%
Port Augusta Aero 27.3 35.6 14th 14.0 8.1 30th 24.2
Streaky Bay 25.9 +2.3 33.2 13th 14.5 +1.8 9.6 22nd 42.4 24.0 high 177%
Whyalla Aero 24.7 +1.0 33.3 10th 12.9 +1.3 7.2 7th 16.8 21.2 normal 79%
Wudinna Aero 25.9 34.0 10th 12.5 5.8 22nd 41.2
Upper North (district 19)
Hawker 26.1 +0.7 32.7 10th 12.4 +1.7 6.8 18th 32.4 19.7 high 164%
Yongala 23.5 +1.6 30.0 11th 9.0 +1.9 4.6 18th 38.2 24.7 high 155%
Northeast (district 20)
Gluepot Reserve 25.9 32.6 11th 9.7 4.0 7th 33.7
Yunta Airstrip 24.7 32.1 14th 10.5 5.0 23rd 16.8
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%
Snowtown 25.5 33.5 10th 11.1 5.3 7th 66.4
Yorke Peninsula (district 22A)
Edithburgh 22.2 +1.3 28.1 13th 14.7 +2.0 7.8 18th 55.2 23.9 high 231%
Kadina AWS 25.0 33.4 10th 11.6 6.7 22nd 54.0
Maitland 23.9 +1.7 32.1 11th 14.5 +2.2 10.2 22nd 106.4 43.2 very high 246%
Minlaton Aero 24.0 32.7 10th 13.1 9.6 4th 71.0
Stenhouse Bay 23.0 +2.5 33.6 10th 15.1 +1.3 11.7 16th 38.0 23.7 high 160%
Warooka 23.4 +1.6 31.8 11th 14.1 +1.7 11.3 18th 59.8 33.1 high 181%
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%
Cape Willoughby 21.2 +2.1 29.6 13th 15.8 +1.8 12.5 18th 68.2 39.4 high 173%
Kingscote Aero 23.8 +2.8 30.8 11th 9.4 +0.9 5.5 18th 51.8 24.8 high 209%
Adelaide Plains (district 23A)
Adelaide 24.8 +2.3 33.5 10th 14.4 +2.1 10.7 20th 76.4 39.3 high 194%
Adelaide Airport 24.1 +2.0 32.7 10th 13.9 +2.2 9.2 7th 73.6 34.9 very high 211%
Edinburgh RAAF 24.6 +1.8 33.6 10th 13.4 +1.8 7.2 22nd 101.8 30.5 highest 334%
Parafield Airport 25.3 +2.8 33.5 13th 13.5 +1.7 5.6 22nd 83.2 39.5 very high 211%
Roseworthy AWS 25.1 +1.1 34.2 10th 12.2 +2.1 6.2 7th 80.8 28.3 highest 286%
County Light (district 23B)
Nuriootpa Viticultural 23.0 +1.2 32.2 10th 10.4 +1.7 4.8 18th 104.8 30.5 highest 344%
Rosedale 24.6 +1.6 34.0 10th 12.3 +1.6 5.2 22nd 108.5 36.6 very high 296%
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%
Noarlunga 23.3 31.8 10th 15.2 10.1 22nd 62.8
Parawa 20.5 +2.9 29.6 11th 13.2 +2.5 9.2 7th 126.6 59.1 highest 214%
Victor Harbor 22.8 33.3 10th 11.9 5.6 8th 64.8
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%
Renmark Aero 25.8 +1.4 32.2 11th 10.4 +1.9 5.7 7th 43.6 16.5 high 264%
Lower Murray Valley (district 24B)
Eudunda 22.9 +1.6 30.8 10th 11.4 +1.7 7.4 7th 94.0 32.9 very high 286%
Meningie 23.6 +2.0 32.9 10th 12.1 +1.4 5.9 6th 45.6 37.2 normal 123%
Murray Bridge 25.1 34.4 10th 10.0 4.9 8th 75.0
Murray Bridge Comparison 25.6 +2.2 35.3 11th 10.9 +0.7 7.0 6th 82.3 28.8 very high 286%
Strathalbyn Racecourse 24.0 +1.9 33.5 10th 12.0 +2.0 6.5 7th 73.8 24.4 highest 302%
Murray Mallee (district 25A)
Karoonda 25.0 33.1 11th 10.9 6.4 7th 84.0 24.8 very high 339%
Upper Southeast (district 25B)
Keith 25.0 +2.6 33.2 11th 11.0 +1.9 3.8 6th 36.0 32.9 normal 109%
Keith 24.7 33.2 11th 9.8 1.6 6th 31.8
Lameroo 24.9 32.5 11th 10.7 5.9 5th 35.0
Lameroo Comparison 25.2 +2.4 33.3 11th 11.3 +2.4 6.4 6th
Lower Southeast (district 26)
Cape Jaffa 22.3 +2.7 31.0 11th 11.6 +1.2 8.1 6th 34.6 29.8 high 116%
Coonawarra 23.1 +2.2 31.1 10th 8.6 +1.0 1.4 4th 22.8 34.2 normal 67%
Mount Gambier Aero 22.2 +2.8 30.7 10th 10.2 +1.5 5.4 4th 41.8 54.8 normal 76%
Naracoorte Aerodrome 23.8 32.0 10th 9.4 3.0 4th 17.8
Padthaway South 23.8 32.2 10th 9.6 3.0 6th 21.8
Robe Airfield 22.5 31.6 13th 9.5 2.0 4th 20.6
Robe Comparison 21.6 +2.8 29.4 11th 12.4 +0.9 7.0 4th 19.6 46.2 low 42%

Notes

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 decile ranking (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.

Further information

South Australian Regional Office
South Australian Climate Services Centre
Bureau of Meteorology
Phone (08) 8366 2600
Email climate.sa@bom.gov.au