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Tuesday, 30 September 2008 - Monthly Climate Summary for Northern Territory - Product code IDCKGC12R0
Darwin saw the end of it’s longest recorded dry spell and a savage thunderstorm ripped through Alice Springs. 102 km/h winds were recorded at Alice Springs Airport on the afternoon of Monday 22 September, with stronger winds probably experienced in town. Despite the storm, long-running severe rainfall deficiencies persist in the region. Maximum and mininum temperatures were above average over most parts. Rainfall was above averge in central parts and below average elsewhere.
Central parts of the Territory, including areas about the Tanami and northern Alice Springs district, saw above average rainfall, though this was sporadic in nature. In the far south, below average rainfall perpetuated long-running rainfall deficiencies. The Alice Springs Airport recording site has now recorded a cummulative total of just 99.4 mm from May 2007. This is it’s lowest 16-month (June-September) rainfall on record. At the other end of the Territory, Darwin recorded its longest running dry spell on record, going 167 days between 10 April and 23 September without recoding any rainfall in the gauge. The previous record was 164 days, between 7 May and 17 October, 1976.
Maximum temperatures were mostly above average. Some areas in the Alice Springs and McArthur districts recorded two to three degrees above average maximums.
Some sites had their highest September temperature on record.
Some sites had their highest September mean daily maximum temperature on record.
Minimum temperatures remained mostly with in one degree of the long term mean over the Top End and increasing two to three degrees above normal in the south.
Some sites had their lowest September temperature on record.
Some sites had their warmest September night (highest daily minimum temperature) on record.
Some sites had their highest September mean daily minimum temperature on record.
40.8°C at Elliott on the 15th|
|Warmest days on average
Highest mean daily maximum temperature
37.7°C at Bradshaw AWS|
|Coolest days on average|
Lowest mean daily maximum temperature
27.5°C at Kulgera|
Lowest daily maximum temperature
16.7°C at Arltunga on the 23rd|
−1.0°C at Kulgera on the 1st|
|Coolest nights on average
Lowest mean daily minimum temperature
11.6°C at Yulara Aero AWS|
|Warmest nights on average
Highest mean daily minimum temperature
|24.2°C at Cape Don AWS|
Highest daily minimum temperature
28.2°C at Kidman Springs on the 20th|
Highest total rainfall
62.4 mm at Upper Waterhouse River|
Highest daily rainfall
61.8 mm at Upper Waterhouse River on the 12th|
|Record highest total September rainfall|
|Total rainfall (mm)||Previous highest||Years of
|Wycliffe Well||13.0||11.7||in 1998||21|
|Rabbit Flat||41.4||22.2||in 1998||11|
|Record highest September temperature|
|Highest temperature (°C)||Previous highest||Years of
|Black Point||34.4||on the 25th||34.3||on the 30th in 2002||16|
|Record highest September mean daily maximum temperature|
Mean daily maximum
|Previous highest||Years of
|Pirlangimpi AWS||33.9||33.7||in 1998||23|
|Record highest September daily minimum temperature|
Highest daily minimum
|Previous highest||Years of
|Kidman Springs||28.2||on the 20th||28.0||on the 27th in 2003||12|
|Delamere Weapons Range AWS||26.0||on the 20th||= 26.0||on the 13th in 2005||11|
|Record lowest September temperature|
|Lowest temperature (°C)||Previous lowest||Years of
|Kulgera||−1.0||on the 1st||= −1.0||on the 13th in 2004||26|
|Record highest September mean daily minimum temperature|
Mean daily minimum
|Previous highest||Years of
|Territory Grape Farm||14.4||13.9||in 1997||15|
This table is very wide and may not fit if printed.
|Summary statistics for September 2008|
|Darwin-Daly (district 14GA)|
|Batchelor Aero AWS||36.7||+0.7||38.4||17th||21.2||+0.8||17.5||10th||7.8||high||211%|
|Black Point||32.3||+0.9||34.4||25th||22.9||0.0||20.7||12th||1.0||very high||111%|
|Cape Don AWS||30.8||33.0||10th||24.2||23.2||5th||13.0||very high||765%|
|Delamere Weapons Range AWS||35.7||+0.1||37.8||14th||21.7||+1.1||16.6||10th||14.2||very high||458%|
|Douglas River||37.5||+1.0||39.9||18th||20.2||+1.7||15.4||11th||16.6||very high||395%|
|Dum In Mirrie AWS||31.6||35.9||10th||23.6||+0.7||20.6||10th||4.2||average||43%|
|Katherine Aviation Museum||36.2||+0.4||38.4||16th||20.4||+0.4||13.9||11th||1.0||average||15%|
|Mango Farm||36.9||+0.7||39.1||18th||19.7||+0.4||14.4||26th||20.6||very high||275%|
|Middle Point AWS||37.0||39.4||19th||19.4||15.3||10th||11.0|
|Pine Creek Council||36.0||37.8||17th||21.8||17.8||11th||21.6|
|Point Fawcett AWS||32.1||+0.3||34.7||10th||20.4||−1.1||17.5||11th||1.4||average||21%|
|Port Keats Aero AWS||33.9||37.3||10th||21.5||+0.7||15.8||26th||0|
|Tindal RAAF AWS||36.7||+1.1||38.9||16th||20.5||+0.5||13.9||11th||0||lowest||0%|
|Arnhem (district 14BC)|
|Alyangula Police||30.6||−0.5||32.5||10th||21.2||+1.0||18.5||3rd||11.1||very high||317%|
|Groote Eylandt Airport AWS||32.9||35.6||28th||18.4||+1.0||14.9||11th||0|
|Maningrida Aero AWS||32.7||36.8||9th||20.9||17.8||10th||0|
|Roper-Mcarthur (district 14DE)|
|Daly Waters AWS||36.5||+2.0||38.9||18th||17.7||+0.7||11.4||10th||0||lowest||0%|
|McArthur River Mine||36.5||+1.4||40.1||18th||19.4||+2.5||14.1||10th||0||lowest||0%|
|Victoria (district 14F)|
|Victoria River Downs||37.0||+1.6||39.3||17th||12.6||26th||0||lowest||0%|
|Barkly (district 15A)|
|Tennant Creek Airport||31.9||+0.3||37.8||13th||19.3||+0.9||11.4||24th||34.2||very high||462%|
|Alice Springs (district 15B)|
|Ali Curung||31.6||−0.7||37.2||20th||9.7||24th||33.8||very high||469%|
|Alice Springs Airport||29.4||+2.2||36.6||18th||12.9||+2.7||3.4||24th||3.2||average||39%|
|Territory Grape Farm||30.5||0.0||37.0||20th||14.4||+2.4||7.8||6th||18.0||high||234%|
|Yulara Aero AWS||28.6||−0.3||36.0||21st||11.6||+0.8||6.1||23rd||3.0||average||48%|
This statement has been prepared based on information available at 11 am on Tuesday 30 September 2008. 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
the years 1800 to 2007.
They are not shown for sites with less than 10 years of record in that time, as they cannot then be calculated reliably.
The median is sometimes more representative than the mean of long-term average ("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.