Monday, 1 November 2010 - Monthly Climate Summary for Northern Territory - Product code IDCKGC22R0
Northern Territory in October 2010: A Wet Start to the Wet Season
- Coldest October on record in Alice Springs
- Wettest October on record for
- Gove Airport and Nhulunbuy; and
Darwin received above average rainfall for October
Darwin received 166.0 mm of rain (average for October is 68.7 mm) most of which fell between the 7th and the 17th of the month. This was the 6th wettest October on record for Darwin, and the wettest since 1986. This marks the the first time Darwin had 11 consecutive days of rain in October. The previous October record was 10 consecutive days in 1954; the mean is 7 days. The wettest day in Darwin this month was 37.8 mm on the 11th.
Coldest October on record in Alice Springs
October daily maximum temperatures began quite normal, or a little above average, in the Alice Springs District. However, by the end of the first week cold winds from the southeast along with some showers and thick cloud cover dropped the daily maximum temperatures to below 20 °C. The temperatures slowly recovered to near normal a few days later. This pattern repeated two more times in the month for a total of three periods of cool weather within the month. By the end of October the monthly mean maximum temperature was only 26.5 °C (average is 31.0 °C). The previous record lowest October mean daily maximum temperature for Alice Springs occurred in 1945 when the monthly average was only 27.1 °C.
October 2010 turned out to be quite wet across most of the Northern Territory. All sites in the Arnhem District measured either very much above average or highest on record rainfall for the month. Sites such as Gove Airport, which usually expects 5.7 mm in an average October, received 179.2 mm this October. Yirrkala Tropical Gardens, near Gove, recorded 130.0 mm on the 17th and 369.0 mm for the month (average for October is only 6.2 mm)
Rainfall in the Alice Springs district was also significant. Alice Springs measured the 3rd wettest October on record with 70.0 mm. This was only 3.4 mm short of the October rainfall record set in 2005 (73.4 mm). All stations measured above average rainfall for October; five stations measured highest on record including Yulara Aero and Wallace Rock Hole.
The wettest overall was 369.0 mm at Yirrkala Tropical Gardens, followed by 296.2 mm at The Chase, followed by 287.5 mm at Roper River Mataranka.
The wettest single day was the 30th when 149.0 mm fell at Mataranka Homestead Resort, 145.5 mm was recorded at Elsey, and 135.0 mm fell at Cave Creek Station.Some sites including Palmerston, Gove Airport, and Yulara Aero had their highest October daily rainfall on record.
A hot start to the month for most of the Top End leveled out and remained very near average for most of the month. Alice Springs District experienced cooler than normal temperatures for most of the month with some sites, including Alice Springs Airport, having their coolest October on record.
The average temperature in Darwin for the first week was 35.1 °C. However, after the first few days the temperature in the north returned to normal, and the temperature in the south dropped to below average. By months end the Top End mean daily maximum temperatures were very near average and the Alice Springs district was very much below average to lowest on record.
The hottest day was 41.4 °C at Bradshaw on the 4th, followed by 41.3 °C on the 3rd, and then 41.0 °C on the 24th, also at Bradshaw.
The warmest days on average were 37.5 °C at Bradshaw, followed by 36.3 °C at McArthur River Mine, and then 36.2 °C at Timber Creek.
The coolest days on average were 25.8 °C at Kulgera, followed by 26.4 °C at Arltunga, and then 26.5 °C at Alice Springs Airport.
The coldest day was 16.6 °C at Kulgera, followed by 17.2 °C at Arltunga, and then 17.6 °C at Alice Springs Airport all occurred on the 15th. The next coldest day was also 17.6 °C at Kulgera on the 16th.Some sites, including McArthur River Mine and Territory Grape Farm, had their coldest October day (lowest maximum temperature) on record. Some sites had their lowest October mean daily maximum temperature on record including Alice Springs Airport, Katherine Aviation Museum, and Rabbit Flat.
Minimum temperatures followed a similar pattern to the maximum temperatures; near average in the north and below average in the south NT.
The coldest night was 4.7 °C at Arltunga on the 18th, followed by 5.2 °C at Alice Springs Airport on the 17th, and then 5.4 °C also at Alice Springs Airport on the 16th.
The coolest nights on average were 12.0 °C at Arltunga, followed by 12.3 °C at Alice Springs Airport, and then 12.6 °C at Curtin Springs.
The warmest nights on average were 26.2 °C at Cape Don, followed by 26.0 °C at Warruwi.
The warmest night was 28.1 °C at Wave Hill on the 23rd.Groote Eylandt Airport had its highest October mean daily minimum temperature on record.
The strongest wind gust was 70 km/h at Bulman on the 7th, followed by 69 km/h at Tindal RAAF on the 27th, and then 65 km/h at Walungurru on the 4th and at Yulara Aero on the 14th.
|Extremes in October 2010|
|Hottest day|| 41.4 °C at Bradshaw on the 4th
|Warmest days on average|| 37.5 °C at Bradshaw
|Coolest days on average|| 26.0 °C at Kulgera
|Coldest day|| 16.6 °C at Kulgera on the 15th
|Coldest night|| 4.7 °C at Arltunga on the 18th
|Coolest nights on average|| 11.9 °C at Arltunga
|Warmest nights on average|| 26.2 °C at Cape Don
|Warmest night|| 28.1 °C at Wave Hill on the 23rd
|Wettest overall|| 369.0 mm at Yirrkala Tropical Gardens
|Wettest day|| 130.0 mm at Yirrkala Tropical Gardens on the 17th
|Highest wind gust|| 70 km/h at Bulman on the 7th
|Record highest October daily rainfall|
|Highest daily rainfall (mm)||
|Victoria River Downs||99.4||on the 31st||67.6||on the 9th in 1995||122|
|Nutwood Downs||74.6||on the 31st||67.8||on the 20th in 2000||72|
|Mataranka Homestead Resort||149.0||on the 30th||62.0||on the 27th in 1986||63|
|Cdu Katherine Rural Campus||64.0||on the 12th||61.6||on the 19th in 2000||45|
|Daly Waters||76.0||on the 31st||44.5||on the 25th in 1950||30|
|Kidman Springs||62.6||on the 31st||56.5||on the 28th in 1978||40|
|Old Delamere||35.4||on the 31st||32.8||on the 26th in 2007||37|
|Gove Airport||39.2||on the 22nd||36.0||on the 21st in 1986||33|
|Mango Farm||76.6||on the 13th||61.2||on the 20th in 2000||30|
|Timber Creek||62.6||on the 13th||49.6||on the 14th in 2000||29|
|Hidden Valley||54.2||on the 13th||49.0||on the 24th in 1969||28|
|Yirrkala Tropical Gardens||130.0||on the 17th||45.0||on the 21st in 1986||25|
|Gorrie||69.0||on the 13th||57.8||on the 30th in 1998||24|
|Wallace Rock Hole||47.0||on the 14th||32.4||on the 4th in 1997||24|
|Karama||95.4||on the 31st||94.0||on the 14th in 1988||23|
|Gilnockie||58.4||on the 12th||41.4||on the 20th in 2000||21|
|Mary River Rangers||68.0||on the 29th||62.4||on the 31st in 1992||19|
|Leanyer||63.4||on the 31st||=63.4||on the 15th in 2008||20|
|Watarrka||49.0||on the 15th||36.8||on the 2nd in 1993||20|
|Yulara Aero||70.4||on the 14th||20.0||on the 16th in 2001||21|
|Record highest total October rainfall|
|Total rainfall (mm)||
|Victoria River Downs||238.8||97.6||in 1969||123||17.9|
|Mataranka Homestead Resort||276.0||100.0||in 2005||63||17.9|
|Curtin Springs||110.6||107.0||in 1974||56||16.8|
|Cdu Katherine Rural Campus||118.4||111.9||in 2000||45||21.7|
|Douglas River||143.6||124.8||in 1969||39||35.9|
|Gove Airport||179.2||81.4||in 1986||34||6.2|
|Jabiru Airport||270.0||214.0||in 1998||34||34.4|
|Nhulunbuy DTW||112.2||72.5||in 1975||32||7.0|
|Mango Farm||173.7||120.1||in 2000||30||40.4|
|Humpty Doo Collard Road||208.1||188.8||in 1998||28||70.8|
|Yirrkala Tropical Gardens||369.0||90.7||in 1986||25||7.8|
|Wallace Rock Hole||105.8||62.5||in 2005||24||16.8|
|Mary River Rangers||221.6||117.7||in 2000||18||44.7|
|Yulara Aero||116.2||93.4||in 2001||21||17.2|
|Record lowest October 2010 daily maximum temperature|
Lowest daily maximum
|Previous lowest||Years of
|McArthur River Mine||28.4||on the 16th||29.4||on the 16th in 1969||26||37.9|
|Territory Grape Farm||19.4||on the 7th||21.0||on the 6th in 2003||18||33.3|
|Ngukurr||28.0||on the 16th||29.4||on the 24th in 1964||13||37.6|
|Record lowest October 2010 mean daily maximum temperature|
Mean daily maximum
|Previous lowest||Years of
|Alice Springs Airport||26.3||27.1||in 1945||68||31.0|
|Jabiru Airport||36.2||36.3||in 1974||31||37.6|
|Katherine Aviation Museum||35.9||36.3||in 2000||25||37.8|
|Douglas River||35.4||= 35.4||in 2000||19||37.6|
|Territory Grape Farm||28.5||30.3||in 2001||18||33.3|
|Yulara Aero||27.8||= 27.8||in 2001||21||32.2|
|Kidman Springs||35.6||36.3||in 2000||13||38.7|
|Rabbit Flat||33.0||34.3||in 2000||13||37.4|
|Point Fawcett||32.1||= 32.1||in 2006||12||33.0|
|Record highest October 2010 mean daily minimum temperature|
Mean daily minimum
|Previous highest||Years of
|Groote Eylandt Airport||22.6||22.4||in 2005||11||20.8|
|Summary statistics for October 2010|
|Maximum temperatures (°C)||Minimum temperatures (°C)||Rainfall (millimetres)|
|Darwin-Daly (district 14GA)|
|Batchelor Aero||34.8||-2.2||38.3||2nd||23.5||+0.5||20.0||18th||161.8||60.2||v high||269%|
|Cape Don||32.5||33.9||4th||26.2||23.9||22nd||162.6||18.1||v high||898%|
|Central Arnhem Plateau||33.8||37.0||26th||22.0||19.0||18th||165.8|
|Darwin Airport||33.8||+0.6||36.5||24th||24.5||-0.4||22.5||13th||166.0||68.7||v high||242%|
|Delamere Weapons Range||35.8||-1.6||40.0||4th||23.7||-0.1||17.4||17th||54.8||35.1||high||156%|
|Dum In Mirrie||33.1||+0.4||36.5||2nd||24.9||-0.7||21.4||19th||143.0||66.1||high||216%|
|Katherine Aviation Museum||35.8||-2.0||39.1||4th||23.1||-0.6||18.2||18th||77.3||33.0||high||234%|
|Pine Creek Council||35.3||-1.9||38.5||4th||23.7||-0.1||20.0||17th||117.7||39.6||v high||297%|
|Point Fawcett||32.1||-0.9||33.5||1st||23.7||-0.2||19.5||18th||212.0||54.3||v high||390%|
|Port Keats Aero||34.2||-0.2||38.0||2nd||24.1||0.0||20.3||19th||122.0||27.9||v high||437%|
|Tindal RAAF||35.7||-1.9||39.1||3rd||23.1||-1.1||17.9||18th||121.4||34.1||v high||356%|
|Arnhem (district 14BC)|
|Alyangula Police||32.2||-0.6||33.4||4th||24.1||+0.9||19.7||18th||82.0||24.2||v high||339%|
|Groote Eylandt Airport||33.2||-1.0||35.7||7th||22.7||+1.9||17.9||18th||74.6||25.6||v high||291%|
|Roper-Mcarthur (district 14DE)|
|Daly Waters||36.1||-1.1||40.1||25th||21.0||-0.2||15.2||17th||113.6||21.3||v high||533%|
|McArthur River Mine||36.3||-1.6||40.1||25th||22.6||+1.6||15.6||18th||128.4||18.3||v high||702%|
|Victoria (district 14F)|
|Kidman Springs||35.8||-2.9||40.8||4th||23.4||-0.1||16.8||18th||110.7||25.7||v high||431%|
|Timber Creek||36.2||-2.1||40.7||4th||23.8||-0.2||19.6||18th||134.2||24.8||v high||541%|
|Victoria River Downs||35.5||-2.3||40.9||4th||22.4||0.0||13.8||17th||238.8||17.9||highest||1334%|
|Barkly (district 15A)|
|Tennant Creek Airport||33.0||-1.8||37.9||29th||20.7||-1.0||12.2||16th||25.0||19.8||high||126%|
|Alice Springs (district 15B)|
|Alice Springs Airport||26.5||-4.5||34.9||4th||12.3||-2.5||5.2||17th||70.0||21.1||v high||332%|
|Rabbit Flat||33.3||-4.1||40.1||25th||17.9||-0.8||10.2||17th||40.6||19.4||v high||209%|
|Territory Grape Farm||28.5||-4.8||35.2||4th||13.5||-2.1||6.6||16th||43.2||16.2||v high||267%|
A Monthly Climate Summary is prepared to list the main features of the weather in Northern Territory 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 9 am on Friday 29 October 2010. 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 2009.
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.