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Thursday, 31 July 2008 - Monthly Climate Summary for Northern Territory - Product code IDCKGC12x0

Cold nights and mild days - Northern Territory in July 2008

Summary

Above average rainfall was recorded in Arnham land in the Top End during July mainly due to an active gulfline. The rainfall remained average to below average over the rest of the Territory. Mininum temperatures were well below average in the northwestern half and the maximum temperatures were generally above average over most of the Territory.

Rainfall

July remained a typical dry season month with no rainfall across the whole Territory. Exception to this was some areas in the Top End and far southwest of Alice Springs district where some rainfall was recorded. Isolated active gulflines produced above average rainfall in Arnham land in the Top End whereas the raifall in the far southwest was due to the extratropical frontal systems. So far in the dry season (May to July) the rainfall over the Territory has been mostly average to below average. However, some areas in the VRD district and adjacent areas received some above average rainfall mainly due to a cloudband during June.

Some sites had their highest total July rainfall on record.

Some sites had their lowest total July rainfall on record.

Maximum temperature

Maximum temperatures were mostly above average during the month. The warm anomaly patch of above two degrees maximum extended across the Territory from northeast to the southwest with a few patches of upto 4 degrees above maximums.

Some sites had their highest July temperature on record.

Minimum temperature

Upto three degrees below normal minimum temperatures were recorded in the northwestern half of the Territory. The rest of the Territory remained slightly warmer than average with some patches of more than 2 degrees above average minimums in the far south of the Alice Springs district.

Some sites had their lowest July temperature on record.

Some sites had their warmest July night (highest daily minimum temperature) on record.

Further information

Climate Information Officer
NT Climate Services Centre
Bureau of Meteorology
Phone (08) 8920 3819
Email climate.nt@bom.gov.au

Extremes

Hottest day
Highest temperature
35.3°C at Bulman AWS on the 19th
Warmest days on average
Highest mean daily maximum temperature
32.9°C at Middle Point AWS
Coolest days on average
Lowest mean daily maximum temperature
19.7°C at Kulgera
Coldest day
Lowest daily maximum temperature
13.2°C at Arltunga on the 23rd
Coldest night
Lowest temperature
−3.7°C at Arltunga on the 25th
Coolest nights on average
Lowest mean daily minimum temperature
2.5°C at Arltunga
Warmest nights on average
Highest mean daily minimum temperature
22.3°C at Cape Don AWS
Wettest overall
Highest total rainfall
15.0 mm at Jabiru Airport AWS
Wettest day
Highest daily rainfall
15.0 mm at Jabiru Airport AWS on the 22nd

Records

Record highest July temperature
Highest temperature (°C) Previous highest Years of
record
McArthur River Mine 35.0 on the 20th 34.8 on the 7th in 2005 27
Yulara Aero AWS 30.5 on the 30th 30.1 on the 31st in 2007 21
Black Point 32.7 on the 17th 32.6 on the 1st in 1991 15
Ngukurr 35.0 on the 20th 35.0 on the 31st in 2006 12



Record lowest July temperature
Lowest temperature (°C) Previous lowest Years of
record
Point Fawcett AWS 9.9 on the 26th 10.2 on the 1st in 2007 10



Summaries

This table is very wide and may not fit if printed.

Summary statistics for July 2008
Maximum temperatures
(°C)
Minimum temperatures
(°C)
Rainfall
(millimetres)
Mean Diff
from
normal
Highest Mean Diff
from
normal
Lowest Total Rank Fraction of
normal
Darwin-Daly (district 14GA)
Batchelor Aero AWS 32.1 +0.4 34.4 1st 15.7 −0.2 9.2 26th 0 lowest
Black Point 30.2 +0.6 32.7 17th 20.4 −0.1 16.0 26th 0 lowest 0%
Cape Don AWS 28.9   30.9 18th 22.3   19.5 26th 8.4 highest 1200%
Channel Point 28.7 −0.1 31.9 15th 15.7 −1.3 11.5 27th 0 lowest 0%
Darwin Airport 31.3 +0.9 33.5 16th 18.1 −1.2 12.5 27th 0 lowest 0%
Delamere Weapons Range AWS 29.2 −0.1 33.0 19th 13.5 −0.8 9.0 12th 0 lowest 0%
Douglas River 31.7 +0.1 34.6 18th 11.6 −0.7 5.0 26th 0 lowest 0%
Dum In Mirrie AWS 30.4 +0.5 33.7 17th 17.0 −1.0 10.7 26th 0 highest
Jabiru Airport AWS 32.5 +0.8 35.2 21st 18.5 +0.2 13.5 26th 15.0 very high 469%
Katherine Aviation Museum 30.0 −0.5 33.5 20th 11.3 −1.5 4.6 10th 0 lowest 0%
Mango Farm 31.3 −0.1 35.0 1st 12.5 −2.4 4.4 26th 0 lowest 0%
McCluer Island AWS 27.3 +0.1 29.7 20th 22.7 0.0 20.4 10th 1.0 high 59%
Middle Point AWS 32.9   34.7 16th 12.9   5.3 26th 0
Oenpelli 32.5 +0.4 35.0 21st 17.6 −0.7 10.0 26th 0 lowest 0%
Pine Creek Council 30.6   33.7 18th 15.9   11.2 10th 0
Pirlangimpi AWS 31.2 +0.3 33.6 16th 18.6 +0.6 13.9 26th 0 lowest 0%
Point Fawcett AWS 29.4 −0.2 31.7 1st 16.3 −2.5 9.9 26th 0 lowest 0%
Port Keats Aero AWS 31.7   34.3 1st 15.0   10.4 12th 0
Tindal RAAF AWS 30.4 +0.5 33.7 19th 11.2 −2.4 4.9 10th 0 lowest 0%
Arnhem (district 14BC)
Alyangula Police 27.7 −0.3 30.5 20th 17.7 0.0 12.8 30th 2.1 high 75%
Gove Airport 27.5 −0.2 30.1 21st 20.0 −0.1 13.5 30th 9.6 normal 50%
Groote Eylandt Airport AWS 28.9 +0.2 32.6 19th 14.7 0.0 8.0 30th 1.0
Maningrida Aero AWS 30.7   33.3 15th 18.0   11.0 26th 0
Milingimbi AWS 30.4   32.8 16th 18.5   12.3 26th 0
Ngayawili AWS 29.8   32.1 21st 19.1   11.6 26th 0
Warruwi AWS 29.1 +0.5 32.1 16th 21.3 +0.2 18.2 26th 0 lowest 0%
Roper-Mcarthur (district 14DE)
Borroloola AWS 30.1 −0.1 33.7 19th 11.7 −0.2 3.8 10th 0.2 low 29%
Bulman AWS 31.0   35.3 19th 12.5   5.5 26th 0
Centre Island AWS 26.6 +0.4 28.8 13th 18.7 +0.3 16.2 12th 0.6 normal 32%
Daly Waters AWS 29.9 +1.2 34.0 20th 9.7 −2.4 3.4 11th 0 lowest 0%
Larrimah 29.8 +0.5 33.5 20th 10.4 −2.0 2.6 10th 0 lowest 0%
McArthur River Mine 30.5 +0.6 35.0 20th 11.5 −0.5 3.8 10th 0 lowest 0%
Ngukurr 30.0 +0.6 35.0 20th 15.2 +0.3 9.5 10th 0 lowest 0%
Wollogorang 29.5 +0.3 34.8 20th 11.5 0.0 2.7 11th 0 lowest 0%
Victoria (district 14F)
Kidman Springs 30.1 −0.1 33.8 19th 10.4 −2.0 4.4 12th 0 lowest 0%
Lajamanu AWS 27.1 +0.6 32.5 19th 7.7 −0.9 1.4 25th 0 lowest 0%
Timber Creek 30.5 0.0 34.9 19th 12.0 −2.7 4.8 11th 0 lowest 0%
Victoria River Downs 29.6 +0.5 33.7 19th 8.2 −2.7 2.1 10th 0 lowest 0%
Wave Hill 28.4 0.0 33.2 19th 8.7 −1.9 2.0 25th 0 lowest 0%
Barkly (district 15A)
Brunette Downs 26.8 +0.1 33.0 19th 10.5 +0.1 4.9 11th 0 lowest 0%
Elliott 28.6 +0.2 35.0 19th 11.3 +0.1 5.7 25th 0 lowest 0%
Tennant Creek Airport 24.9 +0.4 31.3 19th 12.0 −0.2 8.1 25th 0 lowest 0%
Alice Springs (district 15B)
Alice Springs Airport 20.8 +1.1 29.2 19th 3.9 −0.1 −2.4 24th 0 lowest 0%
Arltunga 19.9   27.2 19th 2.5   −3.7 25th 0 lowest 0%
Curtin Springs 21.5 +1.4 26.6 29th 4.1 +0.5 −2.4 25th 7.0 normal 56%
Jervois 21.6 −0.4 29.8 19th     0.8 12th 0 lowest 0%
Kulgera 19.7 +0.8 25.6 19th 5.0 +0.2 −0.9 23rd 0.7 normal 6%
Papunya 23.7   27.9 18th 5.4   −0.9 25th 0 lowest 0%
Rabbit Flat 26.5 +0.4 33.5 30th 4.3 −2.2 −1.3 12th 0 lowest 0%
Territory Grape Farm AWS 22.6 0.0 29.3 19th 5.2 +0.3 0.3 25th 0 lowest 0%
Walungurru AWS 24.8   32.3 30th 9.5   5.0 24th 0
Watarrka 22.4 +0.7 27.0 29th 6.3 +0.1 −1.0 25th 0 lowest 0%
Yuendumu 24.0 +2.1 27.8 29th 5.7 −0.5 0.6 13th 0 lowest 0%
Yulara Aero AWS 21.8 +1.4 30.5 30th 3.4 −1.1 −2.6 25th 4.0 normal 19%

Notes

This statement has been prepared based on information available at 9 am on Thursday 31 July 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 "normal" rain.

The Rank indicates how rainfall this time compares with the climate record for the site, based on the decile ranking (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.

Further information

Climate Information Officer
NT Climate Services Centre
Bureau of Meteorology
Phone (08) 8920 3819
Email climate.nt@bom.gov.au