Wednesday, 2 May 2007 - Seasonal Climate Summary for Northern Territory - Product code IDCKGC22R0

Northern Territory wet season, October 2006 to April 2007


Summary

Conditions at the beginning of this wet season reflected the El Niño event occurring at the time. It was generally drier than normal in the spring/build-up months of October and November and heavier rainfall associated with the monsoon was not seen until close to the New Year. The monsoon itself did not set in at Darwin until almost the middle of January, about three weeks later than average. A couple of significant rainfall events (quite remarkable in some parts) brought the wet season total rainfall figures close-to or even well above the long-term averages.


Rainfall

Most stations ended up recording wet season total rainfall close to their long-term average. These totals in many parts were made up of extended dry periods interspersed with a couple of remarkable rainfall events. Jabiru smashed its long-term highest wet season total with 2510.2 mm, which was even more than Darwin Airport’s highest recorded wet season total (2499.4 mm). More than a third of this 7-month total fell in one six-day period from late February, when the tropical low-pressure system that later became TC George was moving slowly through the area. Similarly in the south, a significant proportion of the wet-season total fell during one particular event in January. Numery, east of Alice Springs, recorded 246 mm rainfall in just one day (18 January). March saw some follow-up rain to some parts of the Alice-Springs district, mostly in the west.

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

Maximum temperature

Averaged over the wet season, maximum temperature was more than 1.5°C above average around the southwest corner of the Territory, ranging to within 0.5°C of average over most of the Top End. November, February and April were all warmer than normal.

Minimum temperature

Southern parts of the Alice Springs district also saw warmer than average minimum temperatures. Most of the northern half of the Territory averaged minimum temperatures within 0.5°C of the long-term average.

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

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 3819
Email climate.NT@bom.gov.au


Extremes

Hottest day
Highest temperature
45.5°C at Wulungurru AWS on the 9th of Feb 2007
Warmest days on average
Highest mean daily maximum temperature
37.9°C at Wulungurru AWS
Coolest days on average
Lowest mean daily maximum temperature
30.6°C at McCluer Island AWS
Coldest day
Lowest daily maximum temperature
15.7°C at Kulgera on the 28th of Mar 2007
Coldest night
Lowest temperature
7.3°C at Yulara Aero AWS on the 28th of Apr 2007
Coolest nights on average
Lowest mean daily minimum temperature
18.8°C at Yuendumu
Warmest nights on average
Highest mean daily minimum temperature
26.3°C at Centre Island AWS
Warmest night
Highest daily minimum temperature
32.0°C at Yulara Aero AWS on the 18th of Feb 2007
Wettest overall
Highest total rainfall
2510.2 mm at Jabiru Airport AWS
Driest overall
Lowest total rainfall
53.2 mm at Yulara Aero AWS
Wettest day
Highest daily rainfall
393.4 mm at Jabiru Airport AWS on the 2nd of Mar 2007
Strongest wind
Maximum wind gust
128 km/h at Middle Point AWS on the 5th of Mar 2007

Records

Record highest total rainfall for the 2006/2007 wet season - October to April
Total rainfall
(mm)
Previous highest Years of
record
Jabiru Airport AWS
2510.2
2060.0
in 2005/06
18



Record highest mean daily minimum temperature for the 2006/2007 wet season - October to April
Mean daily minimum
(°C)
Previous highest Years of
record
Curtin Springs
20.5
20.3
in 2005/06
36
Yulara Aero AWS
20.8
20.2
in 2005/06
17
Watarrka
21.9
21.7
in 1997/98
16



Record lowest mean daily minimum temperature for the 2006/2007 wet season - October to April
Mean daily minimum
temperature
(°C)
Previous lowest Years of
record
Wollogorang
21.7
21.9
in 1994/95
12



Summaries

Summary statistics for the 2006/2007 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
Darwin-Daly (district 14GA)
Batchelor Aero AWS
34.5
39.8
2 Dec 2006
23.3
16.9
20 Apr 2007
1598.2
Black Point
32.0
+0.1
35.5
19 Dec 2006
25.4
0
20.6
2 Oct 2006
1077.0
normal
Bradshaw
37.2
43.7
10 Nov 2006
24.9
20.0
8 Apr 2007
528.6
Cape Don AWS
31.6
34.8
19 Nov 2006
25.4
20.8
3 Apr 2007
1405.6
normal
Central Arnhem Plateau AWS
33.0
38.3
30 Oct 2006
22.6
17.2
10 Oct 2006
1696.6
Channel Point
32.2
+0.1
36.1
6 Oct 2006
24.4
−0.1
19.5
11 Oct 2006
1491.8
normal
Darwin Airport
32.8
+0.4
36.5
15 Nov 2006
24.7
−0.1
20.7
4 Dec 2006
1623.2
normal
Delamere Weapons RangeAWS
36.4
+1.1
43.0
1 Dec 2006
23.7
+0.1
18.0
6 Oct 2006
558.2
equal lowest
Douglas River
35.2
+0.3
40.5
16 Nov 2006
22.9
−0.3
15.1
23 Apr 2007
Dum In Mirrie AWS
32.4
35.5
6 Oct 2006
25.1
20.8
6 Oct 2006
1648.2
Jabiru Airport AWS
35.3
+0.5
39.7
21 Oct 2006
24.2
−0.1
19.1
6 Oct 2006
2510.2
highest
Katherine Aviation Museum
35.7
+0.2
42.5
15 Nov 2006
23.3
−0.4
15.4
21 Apr 2007
1018.5
normal
Mango Farm
35.2
+0.4
40.8
15 Nov 2006
23.1
−0.2
16.7
23 Apr 2007
1494.4
normal
McCluer Island AWS
30.6
33.5
14 Dec 2006
26.2
20.3
3 Feb 2007
1351.0
high
Middle Point AWS
34.6
40.2
31 Oct 2006
23.0
17.1
6 Oct 2006
1675.4
Pine Creek Council
34.6
39.9
2 Dec 2006
23.5
18.2
23 Apr 2007
1344.6
Pirlangimpi AWS
32.8
+0.4
36.4
5 Dec 2006
24.2
+0.4
20.3
4 Oct 2006
1548.6
low
Point Fawcett AWS
31.8
34.4
20 Nov 2006
24.3
18.8
4 Oct 2006
1424.2
Tindal RAAF AWS
35.8
+0.8
42.5
10 Nov 2006
23.5
−0.2
15.4
21 Apr 2007
755.0
very low
Arnhem (district 14BC)
Alyangula Police
32.3
−0.6
36.5
5 Dec 2006
24.2
−0.6
18.8
6 Oct 2006
1122.8
normal
Gove Airport
31.3
−0.6
36.3
10 Nov 2006
23.4
−0.3
17.0
17 Oct 2006
1010.2
low
Groote Eylandt Airport AWS
33.5
38.2
11 Nov 2006
22.9
15.3
4 Oct 2006
1339.0
Maningrida Aero AWS
32.1
35.4
9 Feb 2007
24.0
18.2
5 Oct 2006
1187.0
Milingimbi AWS
32.1
36.3
10 Nov 2006
24.5
19.0
5 Oct 2006
1024.4
Ngayawili AWS
31.8
35.3
23 Nov 2006
24.3
18.4
8 Oct 2006
1060.6
Warruwi AWS
32.0
−0.2
35.7
5 Dec 2006
25.6
0
22.5
30 Oct 2006
744.8
low
Roper-Mcarthur (district 14DE)
Borroloola AWS
34.9
−0.2
43.9
15 Nov 2006
22.8
−0.7
15.0
20 Apr 2007
700.2
normal
Bulman AWS
35.5
42.9
10 Nov 2006
22.2
14.5
7 Oct 2006
1483.6
Centre Island AWS
33.4
0
38.9
4 Dec 2006
26.3
−0.1
22.6
3 Oct 2006
618.8
low
Daly Waters AWS
37.3
+1.4
44.5
15 Nov 2006
22.0
−0.8
13.6
6 Oct 2006
446.0
low
Larrimah
36.1
+0.4
43.1
15 Nov 2006
22.8
−0.3
15.1
8 Oct 2006
755.3
normal
McArthur River Mine
36.6
+0.3
43.8
15 Nov 2006
23.2
0
15.8
20 Apr 2007
594.4
normal
Ngukurr
36.3
+0.1
43.6
10 Nov 2006
24.3
+0.3
18.5
6 Oct 2006
658.7
normal
Wollogorang
35.5
−0.1
43.6
2 Dec 2006
21.7
−1.0
12.0
3 Oct 2006
646.2
low
Victoria (district 14F)
Kidman Springs
37.4
+0.7
44.0
10 Nov 2006
24.3
+0.4
15.5
8 Oct 2006
550.4
low
Lajamanu AWS
37.4
+0.9
44.0
1 Dec 2006
22.1
−0.2
13.3
1 Apr 2007
501.2
normal
Timber Creek
37.3
+0.9
43.7
15 Nov 2006
23.7
−0.5
15.5
8 Oct 2006
636.7
low
Victoria River Downs
36.8
+0.5
42.8
2 Dec 2006
23.3
−0.2
15.2
8 Oct 2006
491.6
low
Wave Hill
37.2
+0.5
44.0
10 Nov 2006
22.8
0
14.6
1 Apr 2007
452.6
low
Barkly (district 15A)
Brunette Downs
37.2
+0.8
43.9
1 Dec 2006
23.0
+0.2
15.6
31 Mar 2007
316.4
normal
Tennant Creek Airport
35.8
+0.5
42.7
1 Dec 2006
23.6
+0.2
14.7
31 Mar 2007
417.8
normal
Alice Springs (district 15B)
Ali Curung
36.2
+0.2
44.1
1 Dec 2006
20.7
−0.5
11.1
1 Apr 2007
477.0
normal
Alice Springs Airport
34.6
+1.5
42.6
29 Nov 2006
19.4
+1.5
7.9
31 Mar 2007
210.6
normal
Arltunga
33.4
42.1
29 Nov 2006
19.0
9.0
2 Apr 2007
414.3
high
Curtin Springs
35.9
+1.6
43.8
26 Nov 2006
20.5
+2.3
7.5
28 Apr 2007
129.3
normal
Kulgera
34.5
+1.5
44.7
29 Nov 2006
20.1
+1.6
9.0
31 Mar 2007
126.0
low
Papunya
36.0
43.5
26 Nov 2006
20.5
11.5
31 Mar 2007
190.6
normal
Territory Grape Farm AWS
35.3
+0.8
42.8
30 Nov 2006
18.9
−0.1
11.1
10 Oct 2006
304.4
normal
Watarrka
35.7
+0.7
44.0
1 Jan 2007
21.9
+1.5
8.5
29 Apr 2007
209.3
normal
Yuendumu
35.5
+1.2
41.9
2 Jan 2007
18.8
−1.1
9.3
1 Apr 2007
372.5
high
Yulara Aero AWS
35.9
+1.3
43.6
26 Nov 2006
20.8
+2.2
7.3
28 Apr 2007
53.2
low

Notes

This statement has been prepared based on information available at 11 am on Wednesday 2nd of May 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).

Further information

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