Monday, 5 January 2009 - Annual Climate Summary for Northern Territory - Product code IDCKGC32R0
Whole of Territory averages …
• Maximum temperature: 32.8°C, 0.9°C above average, being 10th warmest on record. (Since 1910)
• Minimum temperature: 19.1°C, 0.6°C above average, being 14th warmest on record. (Since 1910)
• Rainfall: 527.2 mm (63 of 109), being 20.6 mm below average. (Since 1910)
• January saw the hottest average days and nights on record. (Since 1910)
In the north…
The year started with an active monsoon already established in the north. Darwin recorded its first instance of cyclone-related gale-force winds since TC Gretel in 1985, as Tropical Cyclone Helen made landfall on the Top End coast on 4 January. Late January saw a break in the monsoon when conditions more akin to the build-up returned, though did see a couple of days of intense rain. On the evening of the 13th, Darwin Airport recorded its fifth wettest day on record, of 242 mm, 212 mm of which fell in a two-hour burst.
The monsoon reinvigorated about a week into February, and lingered for much of the month. On the 19th and 20th, Dum In Mirrie Island, off the northwest Top End coast, experienced the two wettest days recorded in the Territory for the year, totalling 650 mm of rain in two days. March saw the monsoon trough linger just offshore for most of the month, though rain days were frequent. By early April dry conditions established over most of the Top End. Darwin then saw its longest spell of dry days ever recorded, being 167 days from 10 April to 23 September. The previous longest dry spell was 164 days in 1976. October saw a promising start to the build-up in the north with early thunderstorm activity, but October and November both ended up being particularly hot months. December saw an early start to the monsoon season, with Tropical Cyclone Billy forming in the Joseph Boneparte Gulf giving early monsoon rains to much of the Top End’s west coast, and another tropical low on the other side of the Top End bring substantial rain to the Roper region.
In the south…
Central Australia generally missed out on 2007/08 summer rains, and the dry sunny conditions resulted in sustained hot weather. Rainfall during autumn and winter was scanty also, and it wasn’t until November that widespread substantial falls were recorded. Rainfall came with a flourish that month, with a spate of severe thunderstorms in the Alice Springs district, which was followed up with above average rain through most of the region in December.
The wettest overall was 2647.2 mm at Dum In Mirrie AWS, followed by 2117.2 mm at Pirlangimpi AWS, followed by 2009.0 mm at Roper River Mataranka.
The driest overall was 92.2 mm at Tobermorey, followed by 98.4 mm at Walungurru AWS, followed by 138.0 mm at Anzac Oval.
Some sites had their highest total rainfall on record.
Some sites had their lowest total rainfall on record.
The wettest single day 345.6 mm at Dum In Mirrie AWS on 20 Feb, followed by 304.2 mm at Dum In Mirrie AWS on 19 Feb, followed by 303.6 mm at Geriatric Park on 20 Feb.
The hottest day was 45.2°C at Wave Hill on 13 Nov, followed by 45.0°C at Elliott on 22 and 23 Nov, followed by 44.8°C at Walungurru AWS on 20 Feb.
The warmest days on average were 35.0°C at McArthur River Mine and Timber Creek, followed by 34.8°C at Kidman Springs, followed by 34.6°C at Victoria River Downs.
The coolest days on average were 29.4°C at Alice Springs Airport, followed by 29.8°C at McCluer Island AWS, followed by 30.1°C at Curtin Springs and Yulara Aero AWS.
The coldest day was 11.2°C at Alice Springs Airport and Arltunga on 7 Jun, followed by 11.6°C at Territory Grape Farm AWS on 7 Jun, followed by 12.7°C at Jervois on 7 Jun.
Some sites had their highest temperature on record.
Some sites had their coldest day (lowest maximum temperature) on record.
The coldest night was −3.7°C at Arltunga on 25 Jul, followed by −2.8°C at Kulgera on 11 Aug, followed by −2.6°C at Yulara Aero AWS on 25 Jul.
The coolest nights on average were 13.7°C at Alice Springs Airport, followed by 14.2°C at Curtin Springs, followed by 14.3°C at Yulara Aero AWS.
The warmest nights on average were 24.2°C at Black Point, followed by 23.9°C at Centre Island, followed by 23.0°C at Milingimbi AWS.
The warmest night was 33.5°C at Walungurru AWS on 10 Jan, followed by 31.9°C at Walungurru AWS on 22 Jan, followed by 31.7°C at Walungurru AWS on 3 Jan.
Some sites had their lowest temperature on record.
Some sites had their lowest mean daily minimum temperature on record.
|45.2°C at Wave Hill on 13 Nov|
|Warmest days on average|
Highest mean daily maximum temperature
35.0°C at McArthur River Mine
35.0°C at Timber Creek
|Coolest days on average|
Lowest mean daily maximum temperature
|29.4°C at Alice Springs Airport|
Lowest daily maximum temperature
11.2°C at Alice Springs Airport on 7 Jun
11.2°C at Arltunga on 7 Jun
|−3.7°C at Arltunga on 25 Jul|
|Coolest nights on average|
Lowest mean daily minimum temperature
|13.7°C at Alice Springs Airport|
|Warmest nights on average|
Highest mean daily minimum temperature
|24.2°C at Black Point|
Highest daily minimum temperature
|33.5°C at Walungurru AWS on 10 Jan|
Highest total rainfall
|2647.2 mm at Dum In Mirrie AWS|
Lowest total rainfall
|92.2 mm at Tobermorey|
Highest daily rainfall
|345.6 mm at Dum In Mirrie AWS on 20 Feb|
|Highest wind gust||111 km/h at McArthur River Mine on 20 Jan|
|Record highest total rainfall for 2008|
|Douglas River||1850.2||1749.9||in 1974||23|
|Keep River Rangers||1331.6||1143.4||in 1987||18|
|Record lowest total rainfall for 2008|
|Rabbit Flat||228.6||236.8||in 2005||11|
|Record highest temperature for 2008|
|Pirlangimpi AWS||37.7||on 22 Oct||= 37.7||on 18 Oct 1982||18|
|Black Point||36.1||on 22 Oct||35.5||on 19 Dec 2006||12|
|Record lowest daily maximum temperature for 2008|
Lowest daily maximum
|Rabbit Flat||13.7||on 7 Jun||15.0||on 2 Jul 1998||8|
|Record lowest mean daily minimum temperature for 2008|
Mean daily minimum
|Timber Creek||20.0||20.1||in 2006||26|
This table is very wide and may not fit if printed.
|Summary statistics for 2008|
|Darwin-Daly (district 14GA)|
|Batchelor Aero AWS||33.6||39.5||14 Oct||20.8||9.2||26 Jul||1901.6|
|Black Point||31.7||+0.5||36.1||22 Oct||24.2||+0.2||16.0||26 Jul||998.1||low||78%|
|Darwin Airport||32.5||+0.6||37.5||22 Oct||22.9||−0.3||12.5||27 Jul||1970.1||high||116%|
|Dum In Mirrie AWS||31.9||37.7||23 Oct||22.8||10.7||26 Jul||2647.2|
|Jabiru Airport AWS||34.5||+0.3||40.1||13 Oct||22.8||+0.3||13.5||26 Jul||1646.6||average||110%|
|Katherine Aviation Museum||33.7||−0.4||40.3||21 Nov||19.3||−1.0||4.6||10 Jul||1348.7||high||121%|
|Mango Farm||33.9||−0.2||40.5||13 Oct||19.8||−0.7||4.4||26 Jul|
|McCluer Island AWS||29.8||34.9||9 Dec||20.4||10 Jul||1167.2|
|Middle Point AWS||34.3||40.5||11 Oct||20.0||5.3||26 Jul||1676.0|
|Pine Creek Council||33.5||39.9||30 Sep||21.2||11.2||10 Jul||1622.5|
|Tindal RAAF||34.0||+0.3||40.7||31 Oct||19.7||−0.9||4.9||10 Jul||1219.2||high||107%|
|Arnhem (district 14BC)|
|Gove Airport||30.7||0.0||36.4||28 Nov||22.7||+0.3||13.5||30 Jul||1341.0||average||93%|
|Groote Eylandt Airport AWS||32.2||39.3||21 Nov||20.6||8.0||30 Jul||1819.6|
|Maningrida Aero AWS||32.3||36.8||9 Sep||22.6||11.0||26 Jul||1275.2|
|Milingimbi AWS||32.2||36.3||10 Sep||23.0||12.3||26 Jul||1160.2|
|Ngayawili AWS||31.6||36.6||10 Nov||22.9||11.6||26 Jul||1619.2|
|Roper-Mcarthur (district 14DE)|
|Borroloola AWS||33.9||+0.2||42.6||22 Nov||19.3||−0.5||3.8||10 Jul||762.6||average||83%|
|Bulman AWS||34.4||41.6||24 Nov||19.5||5.5||26 Jul||1477.4|
|Centre Island AWS||31.4||+0.3||38.3||16 Dec||23.9||+0.1||16.2||12 Jul||927.0||average||91%|
|Daly Waters AWS||34.5||+0.7||42.5||21 Nov||18.3||−1.1||3.4||11 Jul||843.8||high||133%|
|Larrimah||34.1||+0.1||40.6||25 Nov||18.9||−0.8||2.6||10 Jul||1034.5||high||123%|
|McArthur River Mine||35.0||+0.5||42.2||22 Nov||20.2||+0.7||3.8||10 Jul||600.8||average||80%|
|Wollogorang||34.0||+0.2||41.5||7 Nov||18.9||0.0||2.7||11 Jul||708.4||low||71%|
|Victoria (district 14F)|
|Kidman Springs||34.8||43.2||9 Jan||19.7||4.4||12 Jul||1159.7||very high||159%|
|Timber Creek||35.0||+0.2||42.0||25 Nov||20.0||−1.2||4.8||11 Jul||1044.5||average||112%|
|Victoria River Downs||34.6||+0.2||43.1||21 Nov||18.8||−0.8||2.1||10 Jul||995.8||very high||156%|
|Wave Hill||34.4||+0.2||45.2||13 Nov||18.6||−0.3||2.0||25 Jul||568.5||low||82%|
|Barkly (district 15A)|
|Tennant Creek Airport||32.8||+1.0||43.0||15 Jan||20.4||+0.6||8.1||25 Jul||225.4||very low||49%|
|Alice Springs (district 15B)|
|Alice Springs Airport||29.4||+0.7||42.0||11 Jan||13.7||+0.5||−2.4||24 Jul||248.4||average||89%|
|Curtin Springs||30.1||+0.5||44.3||5 Jan||14.2||+0.9||−2.4||25 Jul||193.2||average||82%|
|Jervois||31.1||+0.2||43.4||4 Dec||15.8||+1.4||0.8||12 Jul||215.6||average||75%|
|Rabbit Flat||34.3||+0.6||44.1||21 Jan||16.2||−0.5||−1.3||12 Jul||228.6||lowest||45%|
|Territory Grape Farm AWS||31.0||42.7||5 Jan||15.3||0.3||25 Jul||185.2||very low||58%|
|Watarrka||30.4||−0.2||42.5||21 Feb||15.6||−0.2||−1.0||25 Jul||312.3||average||103%|
|Yulara Aero AWS||30.1||+0.1||43.7||10 Jan||14.3||+0.3||−2.6||25 Jul||169.2||low||57%|
This statement has been prepared based on information available at 11 am on Monday 5 January 2009. 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
the years 1800 to 2006.
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 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.