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Thursday, 2 October 2008 - Seasonal Climate Summary for Northern Territory - Product code IDCKGC22R0

Northern Territory Dry Season   May - September 2008

Summary

Rainfall totals were above average over much of the southern Victoria River and northern Alice Springs districts. Elsewhere falls were scanty. Darwin Airport recorded it’s longest spell of rain-free days, while variable falls in far southern parts did little to ease long-running rainfall deficiencies there. Maximum temperatures were mostly close to average in the higher rainfall regions, and above average elsewhere. Minimum temperatures were mostly above average in the southeast, grading to below average in the northwest. 

Rainfall

There were a couple of rainfall events during the season, in June, August and September that mostly influenced southern parts of the Victoria River district and northern parts of the Alice Springs district. Rabbit Flat received a total of 82.4 mm, which is its highest total Dry Season rainfall on record. Much of the Top End recorded no rainfall, except a few patches in the northwest and areas around the northeast corner. Darwin Airport recorded it’s longest on record dry spell, which ran for 167 days from 10 April to 23 September. Patchy rain in the southern parts of the Alice Springs district generally did little to ease long-running rainfall deficiencies in that region.

Some sites had their highest total Dry Season rainfall on record.

Maximum temperature

In the areas where the rainfall was above average maximum temperatures were close to the long-team mean. Elsewhere was generally warmer than average.

Minimum temperature

Minimum temperatures were mostly above average in the southeast, grading to below average in the northwest. 

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

Other phenomena

On the 27th of August a severe thunderstorm produced small hail near Palm Valley, in the Alice Springs District.

Many large bushfires burnt across the Top End during June, July and August.

Further information

NT Climate Services Centre
Bureau of Meteorology
Phone (08) 8920 3813
Email climate.nt@bom.gov.au

Extremes

Hottest day
Highest temperature
40.8°C at Elliott on 15 Sep
Warmest days on average
Highest mean daily maximum temperature
34.0°C at Middle Point AWS
Coolest days on average
Lowest mean daily maximum temperature

21.7°C at Arltunga

Coldest day
Lowest daily maximum temperature
11.2°C at Alice Springs Airport on 7 Jun
11.2°C at Arltunga on 7 Jun
Coldest night
Lowest temperature
−3.7°C at Arltunga on 25 Jul
Coolest nights on average
Lowest mean daily minimum temperature
6.0°C at Arltunga
Warmest nights on average
Highest mean daily minimum temperature
23.4°C at Cape Don AWS
Warmest night
Highest daily minimum temperature
28.2°C at Kidman Springs on 20 Sep
Wettest overall
Highest total rainfall
90.4 mm at Ali Curung
Wettest day
Highest daily rainfall
61.8 mm at Upper Waterhouse River on 12 Sep
Highest wind gust
102 km/h at Alice Springs Airport on 22 Sep

Records

Record highest total Dry Season rainfall
2008 Dry Season total rainfall (mm) Previous highest Years of
record
Rabbit Flat 82.4 53.0 in 2007 11



Record highest Dry Season daily minimum temperature
2008 Dry Season highest daily minimum
temperature (°C)
Previous highest Years of
record
Kidman Springs 28.2 on 20 Sep 28.0 on 27 Sep 2003 11





Summaries

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

Summary statistics for Dry Season 2008
Maximum temperatures (°C) Minimum temperatures (°C) Rainfall (millimetres)
Mean Diff
from
normal
Highest Mean Diff
from
normal
Lowest Total Rank Fraction
Darwin-Daly (district 14GA)
Batchelor Aero AWS 33.3   38.4 17 Sep 17.5   9.2 26 Jul 7.8
Black Point 31.0   34.4 25 Sep 22.1   16.0 26 Jul 3.0 low 7%
Bradshaw AWS 33.6   39.5 29 Sep 17.4   6.3 11 Jul 0.4
Cape Don AWS 30.0   33.1 1 May 23.4   19.5 26 Jul 21.8
Channel Point 29.8   33.7 25 Sep 18.1   11.5 27 Jul 0 lowest 0%
Darwin Airport 32.2 +0.8 37.0 10 Sep 20.3 −0.6 12.5 27 Jul 5.2 low 12%
Delamere Weapons Range AWS 31.1   37.8 14 Sep 16.4   9.0 12 Jul 14.2
Douglas River 33.5 +0.2 39.9 18 Sep 14.9 −0.8 5.0 26 Jul 16.6 high 81%
Dum In Mirrie AWS 31.4   35.9 10 Sep 19.6   10.7 26 Jul 4.2
Jabiru Airport AWS 33.9 +0.5 39.6 18 Sep 20.4 +0.5 13.5 26 Jul 15.0 average 62%
Katherine Aviation Museum 31.8 −0.4 38.4 16 Sep 14.6 −1.2 4.6 10 Jul 1.0 average 8%
Mango Farm 33.0 −0.1 39.1 18 Sep 15.7 −1.2 4.4 26 Jul 20.6 average 89%
McCluer Island AWS 28.1   31.6 8 Sep 23.8   20.4 10 Jul 2.6
Middle Point AWS 34.0   39.4 19 Sep 15.6   5.3 26 Jul 11.0
Oenpelli 33.4 +0.1 38.3 17 Sep 20.0 +0.4 10.0 26 Jul 0 lowest 0%
Pine Creek Council 32.3   39.9 30 Sep 18.1   11.2 10 Jul 21.6
Pirlangimpi 32.3 +0.5 36.4 9 Sep 20.1 +0.3 13.9 26 Jul 14.0 low 22%
Port Keats Aero AWS 32.4   37.3 10 Sep 17.7   10.4 12 Jul 0.2
Tindal RAAF AWS 32.2 +0.2 38.9 16 Sep 14.7 −1.7 4.9 10 Jul 0 lowest 0%
Arnhem (district 14BC)
Alyangula Police 29.2 −0.3 32.5 10 Sep 19.4 +0.2 12.8 30 Jul 29.0 average 58%
Gove Airport 28.8 −0.1 32.0 30 Sep 20.9 +0.4 13.5 30 Jul 80.8 low 53%
Groote Eylandt Airport AWS 30.4   35.6 28 Sep 16.6   8.0 30 Jul 17.8
Maningrida Aero AWS 31.6   36.8 9 Sep 19.9   11.0 26 Jul 0.2
Milingimbi AWS 31.3   36.3 10 Sep 20.3   12.3 26 Jul 1.2
Ngayawili AWS 30.6   34.3 9 Sep 20.6   11.6 26 Jul 18.6
Warruwi AWS 30.0 +0.4 33.8 8 Sep 22.7 +0.2 17.9 4 Aug 0.4 low 2%
Roper-Mcarthur (district 14DE)
Borroloola AWS 31.8   38.9 30 Sep 14.0   3.8 10 Jul 0.2
Bulman AWS 32.4   39.4 30 Sep 15.0   5.5 26 Jul 0
Centre Island AWS 28.3 0.0 36.4 30 Sep 20.5 0.0 16.2 12 Jul 2.6 low 11%
Daly Waters AWS 31.9 +1.1 38.9 18 Sep 13.1 −1.4 3.4 11 Jul 0 lowest 0%
Larrimah 31.8 +0.3 38.5 19 Sep 14.0 −1.0 2.6 10 Jul 0.4 average 2%
McArthur River Mine 32.4   40.1 18 Sep 14.9   3.8 10 Jul 0 lowest 0%
Ngukurr 31.4 −0.3 39.0 30 Sep 17.2   9.5 10 Jul 0 lowest 0%
Wollogorang 31.3 +0.2 39.5 30 Sep 13.7 −0.1 2.7 11 Jul 0 lowest 0%
Victoria (district 14F)
Kidman Springs 32.1 −0.2 39.5 14 Sep 14.0 −1.0 4.4 12 Jul 1.4 low 9%
Lajamanu AWS 28.9 −0.4 39.0 19 Sep 11.7 −0.3 1.4 25 Jul 50.2 high 268%
Timber Creek 32.7 +0.1 39.7 15 Sep 15.6 −1.5 4.8 11 Jul 4.9 average 26%
Victoria River Downs 31.9 +0.4 39.3 17 Sep 12.5 −1.7 2.1 10 Jul 1.0 average 6%
Wave Hill 30.8 0.0 39.5 29 Sep 12.9 −0.7 2.0 25 Jul 15.0 average 53%
Barkly (district 15A)
Brunette Downs 29.4 +0.1 38.7 12 Sep 13.2 −0.1 4.0 28 May 1.8 low 6%
Tennant Creek Airport 27.2 +0.1 37.8 13 Sep 14.9 +0.1 8.1 25 Jul 45.0 high 165%
Alice Springs (district 15B)
Ali Curung 26.5 −0.6 37.2 20 Sep     1.2 19 Aug 90.4 high 242%
Alice Springs Airport 23.1 +0.6 36.6 18 Sep 6.9 +0.2 −2.4 24 Jul 21.8 low 33%
Arltunga 21.7   35.3 18 Sep 6.0   −3.7 25 Jul 58.0 average 105%
Curtin Springs 23.6 +0.7 35.7 27 Sep 6.9 +0.5 −2.4 25 Jul 33.4 average 54%
Jervois 24.4 −0.5 38.0 20 Sep 9.1 +1.1 0.8 12 Jul 62.8 average 110%
Kulgera 22.2 +0.4 35.9 27 Sep 7.3 −0.3 −2.8 11 Aug 24.4 low 37%
Papunya 25.5   36.6 28 Sep 8.6   0.8 24 Jul 13.3 low 21%
Rabbit Flat 28.6   38.6 19 Sep 9.1   −1.3 12 Jul 82.4 highest 368%
Territory Grape Farm AWS 24.7   37.0 20 Sep 8.7   0.3 25 Jul 64.8 high 128%
Watarrka 24.2 −0.3 36.1 21 Sep 8.6 −0.7 −1.0 25 Jul 23.0 average 31%
Yuendumu 25.8 +1.1 37.2 20 Sep 9.2 −0.1 0.6 13 Jul 54.7 average 83%
Yulara Aero AWS 23.6 0.0 36.0 21 Sep 6.9 −0.2 −2.6 25 Jul 21.2

Notes

This statement has been prepared based on information available at 11 am on Thursday 2 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 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

NT Climate Services Centre
Bureau of Meteorology
Phone (08) 8920 3813
Email climate.nt@bom.gov.au