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Friday, 1 February 2013 - Monthly Climate Summary for South Australia - Product code IDCKGC13R0
Rainfall across much of South Australia during January was below average due to weak tropical activity for this time of the year, with many locations receiving less than half of their average January rainfall. Averaged across the state as a whole, January 2013 was the driest January since 1989.
Much of the rainfall during the month was recorded when a band of rain from a middle level cloud band streaming across the state from ex-Tropical Cyclone Narelle, extended across southern South Australia between the13th and 14th. A cold front crossed South Australian coasts at the end of month bringing showers for coastal areas and fresh southerly winds in the wake of the front.
Rainfall across pastoral areas was generally well below average, though some locations saw higher totals from isolated thunderstorm activity, particularly in the northeast of the state.
Many locations across the Pastoral districts observed no rainfall through the month, of those that did, totals of 2 to 4 mm were typical. Yunta Airstrip reported the highest January rainfall total with 5.4 mm, all of which was recorded on the 19th from thunderstorm activity.
Rainfall totals over the agricultural districts were generally below average, generally between 10 to 15 mm, with higher totals up to 20 mm in the Mount Lofty Ranges.
Hawker reported the highest January rainfall total for the state this month, with 26.6mm, all of which was recorded on the 19th from thunderstorms and resulted in the wettest day for any location in the state this month.Some sites had their lowest total January rainfall on record. Some sites had their lowest total January rainfall for at least 25 years. See a map of rainfall deciles.
The month began with extensive heatwave conditions in place across much of South Australia, particularly in the north. Southern areas saw relief from weak cold frontal systems, but the heat persisted for much of the month inland. The month finished with a burst of milder conditions for the summer period extending across the state.
The mean temperature (the average of the daily maximum and daily minimum temperatures) for South Australia as a whole for January 2012 was 1.9 °C above than the long-term January average. This makes January 2013 the hottest since 2011 and the 9th warmest January on record for South Australia as a whole. By comparison, January 2011 was 2.7 °C warmer than average.
January maximum temperatures were in excess of 1°C above average across all of the state and have resulted in the warmest January since 2006 and the sixth warmest on record. Maximum temperatures averaged through the month ranged from 23.1°C at Robe Comparison in the southeast to 41.9°C at Moomba Airport in the Far North district.
The warmest period for many locations occurred through the first 2 to 3 weeks of January with particularly long periods of hot days across the northern parts of the state. The hottest days for much of the state occurred between the 4th and 6th with some sites observing their highest January temperature on record. .
The hottest day of the month for any location in South Australia was recorded at Moomba Airport on the 12th where the maximum temperature reached 49.6 °C which was the highest temperature recorded in South Australia since 1960 and the sixth hottest temperature ever officially recorded in Australia. Oodnadatta, in the far north of South Australia, observed a record run of 7 consecutive days with maximum temperatures above 45 °C. Further details on this event are available in Special Climate Statement 43.
A strong cold frontal system moved across South Australia at the end of month bringing cooler conditions and fresh southerly winds in the wake of the front; with this, Mount Lofty had the coldest day for any location in the State on the 31st with a maximum of 15.5°C.
See a map of maximum temperature anomalies.
Overnight minimum temperatures for January 2013 were cooler than average in the southern parts of the State, though widely more than 1 °C above average across northern South Australia. Minimum temperatures averaged through the month ranged from 10.6°C at Naracoorte Aerodrome in the southeast to 24.7 °C at Moomba Airport in the Far North Pastoral district.
The coolest night for any location was observed at Coonawarra in the southeast on the 14th with a minimum of temperature of just 2.7 °C, though many locations observed cooler nights through the last week of January in the wake of the vigorous cold frontal system. The warmest nights for many locations was through the first week of the month. Arkaroola recorded the warmest night of the month on the 18th with 32.4 °C, the hottest night at that location in 10 years.See a map of minimum temperature anomalies.
|Extremes in January 2013|
|Hottest day||49.6 °C at Moomba Airport on the 12th|
|Warmest days on average||41.9 °C at Moomba Airport|
|Coolest days on average||23.1 °C at Robe Comparison|
|Coldest day||15.5 °C at Mount Lofty on the 31st|
|Coldest night||2.7 °C at Coonawarra on the 14th|
|Coolest nights on average||10.6 °C at Naracoorte Aerodrome|
|Warmest nights on average||24.7 °C at Moomba Airport|
|Warmest night||32.4 °C at Arkaroola on the 18th|
|Warmest on average overall||33.3 °C at Moomba Airport|
|Coolest on average overall||18.3 °C at Robe Airfield|
|Wettest overall||26.6 mm at Hawker|
0 mm at Andamooka|
0 mm at Coober Pedy Airport
0 mm at Ernabella (Pukatja)
0 mm at Leigh Creek Airport
0 mm at Marla Police Station
0 mm at Minburra
0 mm at Oodnadatta Airport
0 mm at Port Augusta Aero
0 mm at Roxby Downs (Olympic Dam Aerodrome)
0 mm at Yongala
|Wettest day||26.6 mm at Hawker on the 19th|
|Highest wind gust||107 km/h at Neptune Island on the 25th|
|Record lowest total January rainfall|
for January 2013 (mm)
|Yongala||0.0||= 0.0||in 1986||133||22.2|
|Oodnadatta Airport||0.0||= 0.0||in 2008||65||22.9|
|Andamooka||0.0||= 0.0||in 2009||48||17.4|
|Blanchetown Lock 1||0.2||0.3||in 1971||45||20.0|
|Leigh Creek Airport||0.0||= 0.0||in 2009||27||20.2|
|Marla Police Station||0.0||= 0.0||in 2009||26||14.7|
|Lowest total January rainfall for at least 25 years|
for January 2013 (mm)
Most recent January
at least this dry
|Record highest January temperature|
in January 2013 (°C)
|Mount Gambier Aero||43.6||on the 4th||= 43.6||on the 29th in 2009||71||25.2|
|Adelaide Airport||44.1||on the 4th||44.0||on the 28th in 2009||58||28.1|
|Kimba||46.0||on the 4th||45.6||on the 31st in 1968||46||31.4|
|Leigh Creek Airport||46.3||on the 6th||46.1||on the 25th in 2011||30||35.4|
|Whyalla Aero||47.2||on the 4th||47.1||on the 25th in 2003||29||30.1|
|Summary statistics for January 2013|
|Northwest (district 16)|
|Coober Pedy Airport||38.5||46.3||7th||22.0||13.8||29th||0|
|Marla Police Station||39.4||+2.2||45.7||11th||21.8||-0.2||12.3||30th||0||14.7||lowest||0%|
|Roxby Downs (Olympic Dam Aerodrome)||38.4||47.3||6th||20.3||14.3||10th||0|
|Far North (district 17)|
|Leigh Creek Airport||38.5||+3.1||46.3||6th||21.3||+0.6||13.4||29th||0||20.2||lowest||0%|
|Western Agricultural (district 18)|
|Coulta (Coles Point)||28.4||+1.2||39.7||4th||14.6||-0.3||9.3||30th||12.0|
|North Shields (Port Lincoln AWS)||27.6||+1.7||45.6||17th||15.7||0.0||11.1||1st||6.8|
|Port Augusta Aero||35.0||47.7||4th||18.6||12.0||30th||0|
|Upper North (district 19)|
|Northeast (district 20)|
|Gluepot Reserve (Gluepot)||34.4||45.7||4th||14.1||6.0||15th||1.7|
|Lower North (district 21)|
|Clare High School||30.7||42.4||4th||13.8||6.4||30th||4.4|
|Port Pirie Aerodrome||33.2||45.5||4th||16.1||9.0||29th||0.6|
|Snowtown (Rayville Park)||32.4||45.4||4th||13.7||7.7||30th||4.0|
|Yorke Peninsula (district 22A)|
|Kangaroo Island (district 22B)|
|Parndana Cfs AWS||26.7||41.6||17th||12.4||7.5||10th||8.4|
|Adelaide Plains (district 23A)|
|Adelaide (Kent Town)||30.4||+1.1||45.0||4th||16.7||-0.4||12.3||14th||11.6||19.3||average||62%|
|County Light (district 23B)|
|Rosedale (Turretfield Research Centre)||31.8||+1.3||45.6||4th||13.9||-1.3||6.6||29th||7.9||18.3||average||43%|
|Mount Lofty Ranges (district 23C)|
|Hindmarsh Island AWS||25.8||43.6||4th||15.7||10.6||14th||12.4|
|Kuitpo Forest Reserve||26.3||41.0||4th||13.6||9.7||10th||12.2|
|Mount Crawford (Mt Crawford AWS)||27.9||41.8||4th||13.3||7.8||14th||12.0|
|Parawa (Second Valley Forest AWS)||24.3||39.6||4th||13.6||9.9||10th||17.4|
|Victor Harbor (Encounter Bay)||25.8||43.8||4th||13.9||8.7||15th||14.4|
|Upper Murray Valley (district 24A)|
|Loxton Research Centre||33.0||+1.2||45.0||4th||14.1||-0.5||6.9||15th||1.4||18.7||v low||7%|
|Lower Murray Valley (district 24B)|
|Murray Bridge (Pallamana Aerodrome)||30.0||45.7||4th||13.5||8.1||14th||11.6|
|Murray Bridge Comparison||30.8||+1.7||45.6||4th||14.6||0.0||8.5||14th||12.8||16.3||average||79%|
|Murray Mallee (district 25A)|
|Upper Southeast (district 25B)|
|Lameroo (Austin Plains)||31.9||45.0||4th||12.5||7.4||10th||13.4|
|Lower Southeast (district 26)|
|Cape Jaffa (The Limestone)||24.9||+0.3||38.2||4th||13.5||-0.1||8.5||10th||3.4|
|Mount Gambier Aero||26.8||+1.6||43.6||4th||11.1||0.0||4.5||14th||6.4||27.0||low||24%|
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 10 am on Friday 1 February 2013. 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.
The ACORN-SAT dataset is being used for temperature area averages from December 2012 onwards. The major change from earlier datasets is that the ACORN-SAT dataset commences in 1910, rather than 1950, and hence rankings are calculated using a larger set of years.