Friday, 31 October 2008 - Monthly Climate Summary for Northern Territory - Product code IDCKGC22R0
October was a hot month in the Territory, with maximum temperatures being on average 1.75°C above the long-term mean. Darwin recorded its equal-hottest month on record. Long-term rainfall deficiencies were perpetuated in southern parts of the Territory, while in the north, Darwin had its wettest October in a decade. One of the thunderstorms that produced that rain also gave Darwin its strongest recorded October wind gust of 102km/h, in the late afternoon of October 15.
Darwin Airport recorded 117 mm during October, which was its wettest October since 1998. The rainfall was not widespread though, with most inland parts of the Top End recording near-average totals for October.
In southern parts of the Territory, below average rainfall this month has perpetuated long-running rainfall deficiencies. In the 19-month period from April 2007 to October 2008, the Alice Springs Airport recording site has recorded a cumulative total of just 118.2 mm. This is its lowest 19-month cumulative rainfall total on record. Several other sites in the region, as far north as Tennant Creek, have also recorded their lowest-on-record 19-month cumulative total, as shown in the record table below.
The wettest overall was 137.6 mm at Nightcliff Pool, followed by 126.8 mm at Wildman Rangers, followed by 117.0 mm at Darwin Airport.
The wettest single day 74.8 mm at Pinelands on the 15th, followed by 66.6 mm at Howard Springs on the 15th, followed by 65.2 mm at Majestic Orchids on the 15th.
Darwin recorded its equal hottest month on record, with an average maximum temperature of 34.4°C. It has recorded a similar average maximum on three previous occasions, being December 2002, November 1976 and October 1973. There were six days when the temperature at Darwin exceeded 36°C, which is three more days than any other month recorded. The hottest day was Wednesday 22 October when the temperature reached 37.5°C, which was Darwin’s 4th hottest day on record.
Most other places in the Territory also recorded a hotter than average October, with the southwest corner being more than 2 degrees above average.
The hottest day was 42.2°C at Jervois on the 30th, followed by 41.9°C at Rabbit Flat on the 27th, followed by 41.8°C at Elliott on the 13th.
The warmest days on average were 39.9°C at Bradshaw AWS, followed by 39.7°C at Douglas River, followed by 39.6°C at Kidman Springs, followed by 39.6°C at Timber Creek.
The coolest days on average were 32.0°C at Gove Airport, followed by 32.2°C at Kulgera.
The coldest day was 19.6°C at Rabbit Flat on the 7th, followed by 21.5°C at Arltunga on the 7th, followed by 22.4°C at Territory Grape Farm AWS on the 7th.
Some sites had their highest October temperature on record.
Some sites had their highest October mean daily maximum temperature on record.
Minimum temperatures mostly near normal in northern parts of the Territory, and much warmer than normal in southern parts.
The coldest night was 4.7°C at Kulgera on the 26th, followed by 5.6°C at Kulgera on the 6th, followed by 6.9°C at Arltunga on the 13th.
The coolest nights on average were 15.6°C at Kulgera, followed by 16.8°C at Alice Springs Airport, followed by 16.8°C at Arltunga, followed by 17.2°C at Curtin Springs, followed by 17.2°C at Territory Grape Farm AWS.
The warmest nights on average were 26.8°C at Warruwi AWS.
The warmest nights were 29.6°C at Kidman Springs on the 12th and Alice Springs Airport on the 30th, followed by 28.9°C at Kidman Springs on the 19th.
Some sites had their highest October mean daily minimum temperature on record.
|42.2°C at Jervois on the 30th|
|Warmest days on average
Highest mean daily maximum temperature
|39.9°C at Bradshaw AWS|
|Coolest days on average
Lowest mean daily maximum temperature
|32.0°C at Gove Airport|
Lowest daily maximum temperature
|19.6°C at Rabbit Flat on the 7th|
|4.7°C at Kulgera on the 26th|
|Coolest nights on average|
Lowest mean daily minimum temperature
|15.6°C at Kulgera|
|Warmest nights on average|
Highest mean daily minimum temperature
|26.8°C at Warruwi|
Highest daily minimum temperature
|29.6°C at Kidman Springs on the 12th and Alice Springs Airport on the 30th|
Highest total rainfall
|137.6 mm at Nightcliff Pool|
Highest daily rainfall
|74.8 mm at Pinelands on the 15th|
|Highest wind gust||102 km/h at Darwin Airport on the 15th|
|Record highest daily October rainfall|
|Total rainfall (mm)||Previous highest||Years of
|Leanyer||63.4||on the 15th||56.2||on the 20th in 1996||18|
|Stokes Hill||53.8||on the 15th||43.2||on the 21st in 1983||14|
|Record driest 19 months|
|Previous lowest||Years of
|Tennant Creek Airport||203.4||218.0||in 1991||39|
|Alice Springs Airport||118.2||149.4||in 1964||66|
|Wallace Rock Hole||130.2||205.1||in 1991||22|
|Territory Grape Farm AWS||183.0||273.8||in 1994||14|
|Record highest October temperature|
|Highest temperature (°C)||Previous highest||Years of
|Pirlangimpi||37.7||on the 22nd||= 37.7||on the 18th in 1982||23|
|Black Point||36.1||on the 22nd||35.5||on the 15th in 2007||16|
|Dum In Mirrie AWS||37.7||on the 23rd||35.8||on the 14th in 2007||10|
|Record highest October mean daily maximum temperature|
Mean daily maximum
|Previous highest||Years of
|Darwin Airport||34.4||= 34.4||in 1973||66|
|Douglas River||39.7||39.6||in 2002||17|
|Dum In Mirrie AWS||33.5||33.4||in 2005||10|
|Record highest October mean daily minimum temperature|
Mean daily minimum
|Previous highest||Years of
This table is very wide and may not fit if printed.
|Summary statistics for October 2008|
|Maximum temperatures (°C)||Minimum temperatures (°C)||Rainfall (millimetres)|
|Darwin-Daly (district 14GA)|
|Batchelor Aero AWS||37.8||+0.9||39.5||14th||23.6||+0.7||21.1||17th||39.6||average||62%|
|Cape Don AWS||32.4||34.0||21st||25.8||22.7||17th||41.4||high||234%|
|Delamere Weapons Range AWS||38.3||+1.0||40.1||30th||24.2||+0.3||20.8||1st||15.6||low||39%|
|Dum In Mirrie AWS||33.5||+1.0||37.7||23rd||25.2||−0.5||22.6||17th||60.2||average||87%|
|Jabiru Airport AWS||38.2||+0.6||40.1||13th||24.4||+0.6||22.5||15th||16.6||average||45%|
|Katherine Aviation Museum||38.4||+0.7||40.0||30th||22.7||−1.1||17.9||10th||4.4||low||13%|
|Mango Farm||38.6||+1.2||40.5||13th||22.6||+0.3||20.0||10th||73.4||very high||183%|
|McCluer Island AWS||30.7||32.3||15th||27.1||+1.2||24.3||1st||0||lowest||0%|
|Middle Point AWS||37.8||40.5||11th||22.4||20.0||1st||51.0|
|Pine Creek Council||37.6||39.3||12th||24.2||21.7||17th||56.7|
|Point Fawcett AWS||33.5||+0.7||35.8||22nd||23.0||−1.1||19.6||2nd||74.4||average||142%|
|Port Keats Aero||35.6||40.2||10th||24.3||20.0||10th||7.4|
|Tindal RAAF AWS||38.8||+1.3||40.2||6th||23.6||−0.6||19.3||24th||3.6||average||10%|
|Arnhem (district 14BC)|
|Groote Eylandt Airport AWS||35.1||36.9||23rd||21.2||+0.2||18.3||22nd||23.6|
|Maningrida Aero AWS||33.4||34.7||23rd||23.2||21.0||24th||3.0|
|Roper-Mcarthur (district 14DE)|
|Centre Island AWS||33.5||+0.6||35.7||16th||25.4||+0.5||23.6||1st||1.0||average||11%|
|Daly Waters AWS||39.1||+1.9||41.1||6th||20.4||−0.9||15.6||1st||18.6||average||85%|
|McArthur River Mine||38.8||+1.0||41.1||30th||22.2||+1.2||19.3||12th||17.6||average||94%|
|Victoria (district 14F)|
|Victoria River Downs||39.5||+1.7||41.4||26th||22.0||−0.4||15.3||12th||0.6||low||3%|
|Barkly (district 15A)|
|Tennant Creek Airport||36.3||+1.6||40.5||30th||23.2||+1.5||17.5||8th||0||lowest||0%|
|Alice Springs (district 15B)|
|Alice Springs Airport||33.1||+2.2||39.9||29th||16.8||+2.0||9.5||17th||1.6||low||6%|
|Territory Grape Farm AWS||34.5||+1.3||39.5||30th||17.2||+1.6||11.9||10th||0.6||low||3%|
|Yulara Aero AWS||34.1||+2.0||39.8||28th||17.5||+2.9||11.7||10th||0.2||very low||1%|
This statement has been prepared based on information available at 3 pm on Friday 31 October 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.