Thursday, 1 May 2008 - Seasonal Climate Summary for Northern Territory - Product code IDCKGC22R0

Northern Territory Wet Season - October 2007 to April 2008.


Summary

The 2007/08 wet season in the north was characterised by well-defined active and break cycles. October was relatively dry, while in the northwest at least, showers and storms became relatively frequent in November. December started dry and hot but active monsoonal conditions set in during the latter part of the month, and December rainfall totals ended up being greater than average over most of the Top End. The active monsoon persisted into January. Darwin recorded its first instance of cyclone-related gale-force winds since TC Gretel in 1985, as Tropical Cyclone Helen made landfall on the Top End coast near Channel Point, around 10pm on 4 January. Late January saw a break in the monsoon when conditions more akin to the build-up returned, before the monsoon reinvigorated about a week into February, and lingered for much of the month. March saw the monsoon trough linger just offshore for most of the month, though rain days were frequent. By early April dry conditions established over most of the Top End and persisted for the remainder of the month.

By contrast to the above average falls recorded over much of the Top End, southern parts of the Territory, in particular the Barkly and Alice Springs districts, basically saw generally hotter than average conditions and a failure of their summer rains, with very much below average falls recorded there during this season. January in particular saw extremely hot days, compounding the impact of the dry conditions.

Rainfall

The wettest overall was 2292.2 mm at Channel Point.

The wettest single day 345.6 mm at Dum In Mirrie AWS on 20 Feb 2008.

Some sites had their lowest total October to April rainfall on record.

Maximum temperature

The hottest day was 46.5°C at Elliott on 2 Dec 2007.

The warmest days on average were 38.3°C at Elliott.

The coolest days on average were 31.2°C at McCluer Island AWS.

The coldest day was 16.5°C at Curtin Springs on 4 Nov 2007.

Minimum temperature

The coldest night was 5.8°C at Arltunga on 15 Oct 2007.

The coolest nights on average were 18.0°C at Alice Springs Airport.

The warmest nights on average were 26.4°C at Centre Island AWS.

The warmest night was 33.5°C at Wulungurru AWS on 10 Jan 2008.

Some sites had their lowest October to April mean daily minimum temperature on record.

Further information

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

Extremes

Hottest day
Highest temperature
46.5°C at Elliott on 2 Dec 2007
Warmest days on average
Highest mean daily maximum temperature
38.3°C at Elliott
Coolest days on average
Lowest mean daily maximum temperature
31.2°C at McCluer Island AWS
Coldest day
Lowest daily maximum temperature
16.5°C at Curtin Springs on 4 Nov 2007
Coldest night
Lowest temperature
5.8°C at Arltunga on 15 Oct 2007
Coolest nights on average
Lowest mean daily minimum temperature
18.0°C at Alice Springs Airport
Warmest nights on average
Highest mean daily minimum temperature
26.5°C at McCluer Island AWS
Warmest night
Highest daily minimum temperature
33.5°C at Wulungurru AWS on 10 Jan 2008
Wettest overall
Highest total rainfall
2292.2 mm at Channel Point
Wettest day
Highest daily rainfall
345.6 mm at Dum In Mirrie AWS on 20 Feb 2008
Highest wind gust
111 km/h at McArthur River Mine on 20 Jan 2008

Records

Record lowest total rainfall for the 2007/2008 wet season - October to April
 
Total rainfall
(mm)
Previous lowest
Years of
record
Jervois
43.8
65.2
in 1968/69
39
Tennant Creek Airport
121.6
149.6
in 1991/92
38
Kulgera
48.9
52.2
in 1985/86
30
Territory Grape Farm AWS
65.2
111.8
in 1991/92
11


Record lowest mean daily minimum temperature for the 2007/2008 wet season - October to April
  Mean daily minimum
temperature
(°C)
Previous lowest Years of
record
Mango Farm
22.6
22.7
in 1995/96
23
Timber Creek
22.9
23.3
in 1996/97
26
Katherine Aviation Museum
22.6
23.1
in 1996/97
20
Tindal RAAF AWS
22.9
23.0
in 1996/97
17



Summaries

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

Summary statistics for the 2007/2008 wet season - October to April
  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
33.6
37.9
12 Oct 2007
22.9
12.6
27 Apr 2008
1978.4
normal
130%
Black Point
32.2
+0.3
35.5
15 Oct 2007
25.5
0.0
20.9
21 Feb 2008
901.8
low
75%
Bradshaw AWS
36.3
41.7
12 Oct 2007
24.1
14.0
26 Apr 2008
747.2
Cape Don AWS
31.9
35.4
8 Dec 2007
25.7
21.8
21 Mar 2008
1556.4
normal
125%
Channel Point
34.8
5 Dec 2007
17.0
27 Apr 2008
2292.2
high
130%
Darwin Airport
32.8
+0.4
37.0
23 Nov 2007
24.7
−0.1
20.0
27 Apr 2008
1864.2
high
112%
Delamere Weapons Range AWS
35.4
0.0
42.0
2 Dec 2007
23.0
−0.7
13.0
27 Apr 2008
921.8
normal
99%
Douglas River
34.8
−0.2
40.3
12 Oct 2007
22.7
−0.3
11.2
28 Apr 2008
1513.2
high
121%
Dum In Mirrie AWS
32.2
+0.1
35.8
14 Oct 2007
25.0
−0.5
18.2
26 Apr 2008
2102.2
high
120%
Jabiru Airport AWS
35.2
+0.4
40.3
11 Nov 2007
24.4
+0.1
18.6
28 Apr 2008
1658.4
high
110%
Katherine Aviation Museum
35.1
−0.4
40.5
12 Oct 2007
22.6
−1.0
11.5
27 Apr 2008
1341.1
high
122%
Mango Farm
34.5
−0.3
39.9
12 Oct 2007
22.6
−0.6
12.9
27 Apr 2008
1772.9
very high
132%
McCluer Island AWS
31.2
34.3
21 Nov 2007
26.5
22.1
6 Jan 2008
1101.0
normal
96%
Middle Point AWS
34.6
39.0
15 Oct 2007
23.0
15.1
18 Apr 2008
1592.8
Oenpelli
34.9
+0.4
40.2
9 Nov 2007
17.8
15 Oct 2007
1107.0
low
80%
Pine Creek Council AWS
34.2
38.9
12 Oct 2007
23.1
15.4
28 Apr 2008
1650.7
Pirlangimpi AWS
32.8
+0.4
36.0
8 Dec 2007
24.2
+0.3
19.8
19 Apr 2008
2070.4
normal
106%
Point Fawcett AWS
31.8
−0.4
35.1
14 Oct 2007
24.2
−0.8
17.4
21 Apr 2008
1634.0
Port Keats Aero AWS
38.6
14 Oct 2007
13.8
27 Apr 2008
689.6
Tindal RAAF AWS
35.1
0.0
40.0
30 Nov 2007
22.9
−0.8
11.5
27 Apr 2008
1105.2
normal
103%
Arnhem (district 14BC)
Alyangula Police
32.8
−0.1
37.5
2 Dec 2007
24.9
+0.1
19.2
1 Nov 2007
1015.9
normal
90%
Gove Airport
32.0
+0.2
36.9
2 Dec 2007
23.7
0.0
19.1
2 Oct 2007
1090.6
normal
85%
Groote Eylandt Airport AWS
33.1
39.1
1 Dec 2007
23.1
13.7
27 Apr 2008
1695.4
Maningrida Aero AWS
32.8
38.5
2 Dec 2007
24.3
17.4
28 Apr 2008
1455.2
Milingimbi AWS
32.8
37.6
2 Dec 2007
24.8
20.0
28 Apr 2008
1218.4
Ngayawili AWS
32.1
37.7
7 Nov 2007
24.5
18.7
28 Apr 2008
1761.0
Warruwi AWS
32.3
0.0
37.4
3 Dec 2007
26.0
+0.4
22.2
28 Apr 2008
784.2
low
69%
Roper-Mcarthur (district 14DE)
Borroloola AWS
35.4
+0.4
42.9
2 Dec 2007
23.1
−0.4
11.2
26 Apr 2008
809.2
normal
88%
Bulman AWS
35.9
42.6
1 Dec 2007
22.8
11.8
27 Apr 2008
1433.6
Centre Island AWS
33.7
+0.4
39.0
1 Dec 2007
26.4
+0.1
21.4
27 Apr 2008
902.0
normal
90%
Daly Waters AWS
36.7
+0.7
44.3
2 Dec 2007
22.2
−0.6
9.1
27 Apr 2008
713.4
normal
114%
Larrimah
36.0
+0.3
43.5
2 Dec 2007
22.5
−0.6
11.8
26 Apr 2008
827.9
normal
100%
McArthur River Mine
37.2
+0.6
45.1
2 Dec 2007
23.7
+0.4
12.0
26 Apr 2008
570.2
low
78%
Ngukurr
43.1
30 Nov 2007
15.5
28 Apr 2008
1308.1
very high
177%
Wollogorang
36.0
+0.3
44.3
2 Dec 2007
22.3
−0.3
11.7
25 Apr 2008
690.7
normal
75%
Victoria (district 14F)
Kidman Springs
37.0
+0.2
43.2
9 Jan 2008
23.3
−0.7
11.3
27 Apr 2008
901.2
high
125%
Lajamanu AWS
37.6
+1.2
44.4
21 Jan 2008
22.0
−0.2
12.0
19 Apr 2008
355.4
normal
74%
Timber Creek
37.2
+0.7
42.3
12 Oct 2007
22.9
−1.3
11.0
28 Apr 2008
846.4
normal
92%
Victoria River Downs
36.6
+0.1
43.3
3 Dec 2007
22.7
−0.8
10.6
26 Apr 2008
974.3
very high
154%
Wave Hill
37.4
+0.6
45.2
2 Dec 2007
22.4
−0.3
11.0
27 Apr 2008
422.7
very low
64%
Barkly (district 15A)
Brunette Downs
37.7
+1.2
45.5
2 Dec 2007
23.0
+0.3
12.7
26 Apr 2008
250.2
low
64%
Elliott
46.5
2 Dec 2007
11.5
28 Apr 2008
389.3
low
68%
Tennant Creek Airport
36.9
+1.6
45.4
2 Dec 2007
24.2
+0.8
15.4
14 Oct 2007
121.6
lowest
29%
Alice Springs (district 15B)
Ali Curung
37.1
+1.2
46.0
2 Dec 2007
21.2
+0.1
8.9
14 Oct 2007
93.5
very low
27%
Alice Springs Airport
34.0
+0.8
42.6
1 Dec 2007
18.0
+0.1
6.4
16 Apr 2008
68.0
very low
32%
Arltunga
33.1
41.2
1 Dec 2007
18.3
5.8
15 Oct 2007
46.1
very low
20%
Curtin Springs
34.8
+0.6
44.3
5 Jan 2008
18.6
+0.4
7.5
28 Apr 2008
104.7
normal
63%
Jervois
36.0
+0.7
43.1
22 Feb 2008
20.4
+1.3
7.0
29 Apr 2008
43.8
lowest
19%
Kulgera
42.5
1 Dec 2007
6.5
16 Apr 2008
48.9
lowest
25%
Papunya
36.1
44.1
1 Dec 2007
19.1
10.2
1 Oct 2007
89.7
low
44%
Rabbit Flat
38.0
+0.9
45.3
1 Dec 2007
20.7
−1.0
7.8
1 Oct 2007
240.6
low
51%
Territory Grape Farm AWS
35.5
+0.9
43.6
2 Dec 2007
19.1
+0.1
8.6
14 Oct 2007
65.2
lowest
26%
Watarrka
34.6
−0.4
42.9
1 Dec 2007
19.6
−0.9
6.3
27 Apr 2008
200.3
normal
87%
Wulungurru AWS
37.1
44.8
20 Feb 2008
23.6
13.6
28 Apr 2008
18.2
Yuendumu
35.7
+1.5
44.6
2 Dec 2007
9.5
15 Oct 2007
89.8
low
30%
Yulara Aero AWS
34.7
0.0
44.0
1 Dec 2007
18.8
0.0
6.2
15 Oct 2007
147.0
normal
70%

Notes

This statement has been prepared based on information available at 1 pm on Wednesday 30 April 2008. 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 3813
Email climate.nt@bom.gov.au