Wednesday, 5 September 2007 - Monthly Climate Summary for Northern Territory - Product code IDCKGC12R0

Northern Territory in August 2007

A cloudband developed over the Top End to Barkly regions for a couple of days in the middle of the month, producing some unusually heavy rain and breaking several cold-day temperature records.  Otherwise, fairly typical dry-season weather was seen during the month.

Rainfall

Several locations across the Top End and the Roper McArthur and Barkly districts reported above average rainfall for August, the majority of which fell on the 17th and 18th.  A large number of sites broke daily and monthly rainfall records at this time.  Elsewhere, some light rain fell in parts around the southern half early in the month, however this is not unusual for August and rainfall totals were generally average to below average.

Some sites had their highest total August rainfall on record.

Some sites had their highest daily August rainfall on record.


Maximum Temperature

Maximum temperatures, averaged over the month, were below average in the northern half, and above average in the south.  The northern half was influenced by a couple of cool days associated with the cloudband, when several new temperature records were established.

Some sites had their lowest August mean daily maximum temperature on record.

Some sites had their coldest August day (lowest maximum temperature) on record.


Minimum Temperature

Minimum temperatures were less than normal over most parts of the Territory, most notably in the central-west.  Parts of the Tanami and southern Victoria River region were 2 degrees or more cooler than normal.  No minimum temperature records were broken.

Further Information

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

Extremes

Hottest day
Highest temperature
36.5°C at Middle Point AWS on the 14th
Warmest days on average
Highest mean daily maximum temperature
33.5°C at Middle Point AWS
Coolest days on average
Lowest mean daily maximum temperature
22.9°C at Arltunga and
22.9°C at Kulgera
Coldest day
Lowest daily maximum temperature
12.2°C at Arltunga on the 3rd
Coldest night
Lowest temperature
−1.8°C at Arltunga on the 10th
Coolest nights on average
Lowest mean daily minimum temperature
4.2°C at Arltunga
Warmest nights on average
Highest mean daily minimum temperature
21.9°C at Warruwi AWS
Warmest night
Highest daily minimum temperature
25.3°C at Warruwi AWS on the 16th
Wettest overall
Highest total rainfall
63.6 mm at Tandangle Hill
Wettest day
Highest daily rainfall
49.6 mm at Tandangle Hill on the 17th
Highest wind gust
74 km/h at McCluer Island on the 17th

Records

Record highest total rainfall for August 2007
Total rainfall
(mm)
Previous highest Years of
record
Ngukurr
20.4
8.3
in 1973
67
Mataranka Homestead Resort
49.6
14.6
in 1974
56
Larrimah
17.2
11.7
in 1956
52
Katherine Rural College
31.4
11.0
in 1974
42
Elsey
41.2
8.0
in 1974
40
Maningrida
10.3
1.5
in 1966
38
Douglas River
20.8
8.4
in 2003
35
Hodgson River
32.6
31.8
in 1974
32
McArthur River Mine
12.6
0.6
in 1985
32
Daly Waters AWS
9.4
6.3
in 1947
31
Katherine Aviation Museum
32.4
20.3
in 1971
29
Wollogorang
10.4
8.2
in 1986
28
Mataranka Station
50.2
10.2
in 1966
24
Gorrie
9.6
3.0
in 1996
18
Nathan River
13.2
10.0
in 1980
18
Mary River Rangers
23.2
20.0
in 1998
16
Tindal RAAF AWS
35.6
0.4
in 1986
10


Record highest daily rainfall for August 2007
Highest daily rainfall
(mm)
Previous highest Years of
record

Ngukurr

10.4
on the 17th
2.8
on the 29th in 1924
68

Mataranka Homestead Resort

44.0
on the 17th
11.2
on the 28th in 1974
56
Larrimah
12.4
on the 17th
11.7
on the 11th in 1956
52
Katherine Rural College
19.8
on the 17th
11.0
on the 28th in 1974
42
Elsey
41.2
on the 17th
6.1
on the 19th in 1966
40
Maningrida
8.9
on the 17th
1.3
on the 24th in 1988
38
Douglas River
13.4
on the 18th
8.4
on the 15th in 2003
35
Hodgson River
26.6
on the 17th
19.1
on the 26th in 1974
32
McArthur River Mine
11.6
on the 17th
0.4
on the 14th in 1985
32
Daly Waters AWS
7.4
on the 17th
3.3
on the 18th in 1947
31
Katherine Aviation Museum
27.0
on the 17th
20.3
on the 31st in 1971
29

Mataranka Station

39.2
on the 17th
9.7
on the 18th in 1966
24
Gorrie
6.6
on the 17th
3.0
on the 9th in 1996
18
Nathan River
13.2
on the 17th
10.0
on the 20th in 1980
17



Record lowest mean daily maximum temperature for August 2007
Mean daily maximum
temperature
(°C)
Previous lowest Years of
record
Douglas River
32.6
32.8
in 2006
16
Kidman Springs
31.2
31.8
in 2006
11


Record lowest daily maximum temperature for August 2007
Lowest daily maximum
temperature
(°C)
Previous lowest Years of
record
Darwin Airport
25.1
on the 17th
25.3
on the 1st in 1990
66
Larrimah
18.8
on the 17th
22.0
on the 1st in 1990
42
Brunette Downs
15.6
on the 17th
16.7
on the 15th in 2003
40
Oenpelli
25.5
on the 17th
25.6
on the 1st in 1990
40
Warruwi AWS
23.9
on the 17th
24.0
on the 3rd in 1990
39
Daly Waters AWS
17.7
on the 17th
21.9
on the 5th in 1953
37
Centre Island AWS
20.7
on the 17th
21.4
on the 2nd in 1990
31
Jabiru Airport AWS
25.7
on the 17th
28.4
on the 5th in 1986
28
Mango Farm
22.1
on the 17th
25.3
on the 1st in 1990
27
Wollogorang
18.8
on the 17th
22.3
on the 1st in 1990
26
Alyangula Police
21.7
on the 17th
23.2
on the 10th in 1996
24
Katherine Aviation Museum
20.0
on the 17th
23.5
on the 1st in 1990
22
McArthur River Mine
20.0
on the 17th
22.2
on the 1st in 1990
22
Tindal RAAF AWS
20.0
on the 17th
24.9
on the 4th in 1986
19
Douglas River
20.2
on the 17th
26.7
on the 29th in 1996
16
Ngukurr
21.5
on the 17th
26.1
on the 6th in 1967
14
Borroloola AWS
19.8
on the 17th
22.4
on the 31st in 2004
12
Kidman Springs
25.8
on the 17th
27.4
on the 1st in 2003
11
Delamere Weapons Range AWS
23.0
on the 17th
26.0
on the 15th in 2002
10



Summaries

Summary statistics for August 2007
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
32.6
−0.7
35.5
14th
17.1
+0.2
12.9
10th
0.8
normal
23%
Black Point
30.5
+0.2
33.2
31st
20.6
−0.8
16.4
24th
3.8
very high
271%
Bradshaw
32.9
35.9
29th
16.4
9.8
7th
0.0
Cape Don AWS
29.4
30.8
30th
21.8
19.9
24th
2.2
high
157%
Central Arnhem Plateau AWS
29.3
32.7
13th
16.3
13.1
23rd
7.8
Channel Point
29.2
−0.4
32.2
10th
17.7
−0.4
13.6
10th
5.4
high
84%
Darwin Airport
31.3
0
34.3
30th
19.5
−1.0
14.1
24th
0.2
normal
4%
Delamere Weapons Range AWS
30.8
−0.8
34.0
31st
16.2
+0.4
11.0
7th
0.0
normal
Douglas River
32.6
−0.9
36.2
14th
14.2
0
8.3
7th
20.8
highest
2600%
Dum In Mirrie AWS
30.0
33.2
22nd
19.0
15.0
9th
1.0
normal
23%
Jabiru Airport AWS
33.2
−0.5
35.6
13th
19.2
+0.1
14.4
24th
0.0
normal
0%
Katherine Aviation Museum
31.2
−1.2
35.1
13th
14.6
−0.1
9.1
9th
32.4
highest
3600%
Mango Farm
32.4
−1.0
35.4
14th
15.2
−0.8
9.6
24th
4.6
high
192%
McCluer Island AWS
30.4
22nd
22.7
20.3
24th
0.8
Middle Point AWS
33.5
36.5
14th
14.9
8.8
24th
3.0
Oenpelli
32.5
−1.2
34.7
28th
18.6
+0.2
14.3
24th
4.0
very high
500%
Pine Creek Council
31.2
34.9
13th
17.5
13.9
6th
40.5
Pirlangimpi AWS
31.5
−0.3
34.3
29th
19.4
+0.4
15.7
10th
1.2
normal
16%
Point Fawcett AWS
30.1
−0.6
32.2
29th
17.5
−1.9
13.9
7th
1.0
high
250%
Port Keats Aero AWS
31.6
33.8
24th
17.4
10.3
7th
0.4
Tindal RAAF AWS
31.2
−0.9
35.1
13th
15.0
−0.5
11.5
6th
35.6
highest
Arnhem (district 14BC)
Alyangula Police
28.3
−0.7
31.4
26th
18.0
0
14.5
7th
5.9
high
393%
Gove Airport
27.9
−0.6
30.4
25th
19.2
+0.1
14.1
24th
24.6
very high
432%
Groote Eylandt Airport AWS
29.6
32.6
15th
15.7
9.9
23rd
4.2
Maningrida Aero AWS
30.7
33.1
24th
18.0
14.4
23rd
8.6
Milingimbi AWS
30.1
31.9
26th
18.9
14.9
24th
34.6
Ngayawili AWS
30.1
32.1
14th
19.3
14.8
24th
6.8
Warruwi AWS
29.2
0
31.5
22nd
21.9
+0.3
17.8
24th
1.6
very high
320%
Roper-Mcarthur (district 14DE)
Borroloola AWS
31.7
0
35.0
15th
13.6
+0.1
6.3
6th
8.6
very high
2867%
Bulman AWS
32.2
35.6
13th
14.1
9.5
23rd
7.4
Centre Island AWS
27.5
−0.2
29.9
12th
19.5
0
16.6
6th
5.2
very high
325%
Daly Waters AWS
31.0
+0.1
35.0
29th
12.9
−0.2
7.1
8th
9.4
highest
4700%
Larrimah
31.0
−0.8
34.8
14th
13.0
−1.2
7.9
6th
17.2
highest
4300%
McArthur River Mine
31.8
−0.1
35.9
15th
14.4
+1.3
7.6
6th
12.6
highest
12600%
Wollogorang
30.6
−0.5
35.0
15th
13.6
+1.5
5.7
7th
10.4
highest
2600%
Victoria (district 14F)
Kidman Springs
31.2
−1.6
35.2
29th
13.5
−0.3
8.3
7th
0.0
normal
0%
Lajamanu AWS
29.3
−0.8
33.8
31st
10.3
−1.1
3.9
7th
0.0
normal
0%
Timber Creek
32.2
−0.7
36.0
13th
14.9
−1.1
7.5
9th
0.0
normal
0%
Victoria River Downs
30.6
−1.2
34.3
29th
12.3
−1.1
5.8
6th
0.0
normal
0%
Wave Hill
30.3
−0.8
34.5
31st
11.0
−1.8
4.5
9th
0.0
normal
0%
Barkly (district 15A)
Brunette Downs
28.8
−0.7
33.4
28th
12.6
+0.2
5.8
7th
3.2
very high
229%
Tennant Creek Airport
26.8
−0.7
32.0
31st
14.3
−0.2
9.5
5th
0.0
normal
0%
Alice Springs (district 15B)
Ali Curung
26.4
−0.9
31.8
15th
7.4
−1.8
2.2
5th
0.0
normal
0%
Alice Springs Airport
23.9
+1.3
30.1
2nd
5.5
−0.5
0.2
5th
3.0
normal
32%
Arltunga
22.9
28.8
2nd
4.2
−1.8
10th
2.7
normal
41%
Curtin Springs
24.5
+1.6
32.1
30th
5.3
−0.3
0.0
7th
2.0
normal
25%
Kulgera
22.9
+0.9
31.5
30th
6.4
−0.4
−0.2
19th
5.8
normal
63%
Papunya
25.9
34.4
13th
7.6
2.7
19th
2.6
normal
42%
Rabbit Flat
28.8
−0.7
33.9
31st
6.0
−2.7
0.4
7th
0.0
normal
0%
Territory Grape Farm AWS
25.3
+0.1
30.7
28th
5.9
−1.2
0.5
7th
0.0
normal
0%
Watarrka
24.5
0
31.2
30th
8.1
−0.4
1.6
21st
0.0
normal
0%
Wulungurru AWS
26.9
32.8
30th
11.9
4.7
7th
0.0
Yulara Aero AWS
24.4
+0.9
32.3
30th
5.4
−0.5
0.8
5th
2.2
normal
59%

Notes

This statement has been prepared based on information available at 12 pm on Wednesday 5 September 2007. Some checks have been made on the data, but it is possible that results will change as new information becomes available.

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 3819
Email climate.NT@bom.gov.au