Wednesday, 3 January 2007 - Annual Climate Summary for Northern Territory - Product code IDCKGC32R0

Cool and wet in the north, hot and dry in the south - Northern Territory in 2006

Overall 2006 in the Territory can be characterised as being cooler and wetter than normal in the north, while being drier and warmer than normal in the south. Alice Springs recorded two remarkable hot spells, the first in January, and the second in November. The hot temperatures compounded long-term rainfall deficiencies in the southeast of the Territory. A vigourous monsoon, and its late breakdown with TC Monica in late April, accounted for the greater than average rainfall in the north. El Niño conditions contributed to warmer days in the south and cooler nights in the north during the dry season and build-up months. Also consistent with El Niño conditions, the summer monsoon failed to develop by the end of the year, there was a generally dry build-up over the Top End, and long-term rainfall deficiencies persisted in the southeast.

Rainfall

Several rainfall recording sites in the northern half recorded record high annual rainfall totals. Much of this rain fell during active bursts of the monsoon between January and April, with TC Monica extending heavy wet season rains through to the end of April. Following a typically dry dry-season, the build-up period was mostly drier than usual, consistent with El Niño influences. The southern half saw drier than average conditions persist for much of the year, with serious long-term deficiencies evident in the southeast corner.

Some sites had their highest annual rainfall on record.

Temperature

While active bursts of the monsoon brought cooler temperatures to northern parts of the Territory, southern parts suffered torrid conditions early in the year, with Alice Springs recording an extreme hot spell which included 32 consecutive days 37°CC or above, and 3 consecutive nights where the temperature failed to fall below 30°CC. It was during this spell that Jervois experienced the hottest night ever recorded in the Territory, of 33.7°CC on 5 January. Despite a couple of cool spells, the southern half of the Territory was warmer than normal for much of the year, with another record hot spell at Alice Springs during November.

In the north, temperatures were mostly cooler than normal, both during the vigorous monsoon bursts early in the year, then persisting through the dry season, with dry southeasterly winds regularly pushing through the Top End. In the build-up, night-time temperatures remained cooler than normal, but less than typical shower and thunderstorm activity meant there were fewer cool days.

Some sites had their highest temperature on record.

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

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

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

Some sites had their lowest 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
45.8°C at Elliott on 10 Jan
Warmest days on average
Highest mean daily maximum temperature
34.3°C at Timber Creek
Coolest days on average
Lowest mean daily maximum temperature
28.9°C at Arltunga
Coldest day
Lowest daily maximum temperature
10.5°C at Watarrka on 14 Jul
Coldest night
Lowest temperature
−4.8°C at Arltunga on 21 Jun
Coolest nights on average
Lowest mean daily minimum temperature
14.2°C at Alice Springs Airport and
Arltunga and
Territory Grape Farm AWS
Warmest nights on average
Highest mean daily minimum temperature
24.4°C at Cape Don AWS
Warmest night
Highest daily minimum temperature
33.7°C at Jervois on 5 Jan
Wettest overall
Highest total rainfall
2550.4 mm at Channel Point
Wettest day
Highest daily rainfall
304.0 mm at Majestic Orchids on the 26 Apr
Highest wind gust
98 km/h at Centre Island AWS on 8 Jan and
Tennant Creek Airport on 18 Feb

Records

Record highest total rainfall for 2006
Total rainfall
(mm)
Previous
highest
Normal Years of
record
Timber Creek
1193.8
1144.1
in 2005
921.1
22
Wollogorang
1789.6
1552.9
in 2003
959.0
20
Jabiru Airport AWS
2099.8
2045.1
in 1984
1478.2
14





Record lowest mean maximum temperature for 2006
Mean maximum
temperature
(°C)
Previous
lowest
Normal Years of
record
Gove Airport
29.9
30.0
in 1972
30.7
25
Katherine Aviation Museum
33.2
33.3
in 2000
34.2
19
Mango Farm
33.2
33.5
in 1982
34.1
17



Record highest daily maximum temperature for 2006
Highest daily maximum temperature
(°C)
Previous
highest
Normal Years of
record
Daly Waters AWS
44.5
on 15 Nov
43.7
on 2 Jan 1963
33.8
32
Timber Creek
43.7
on 15 Nov
43.4
on 27 Dec 1992
34.9
23
Tindal RAAF AWS
42.5
on 10 Nov
42.3
on 23 Oct 2002
33.8
14
Black Point AWS
35.5
on 19 Dec
35.3
on 24 Oct 1998
31.3
11



Record highest mean daily minimum temperature for 2006
Mean daily minimum
temperature
(°C)
Previous
highest
Normal Years of
record
Jervois
16.3
16.2
in 2005
14.4
24



Record lowest mean daily minimum temperature for 2006
Mean daily minimum
temperature
(°C)
Previous
lowest
Normal Years of
record
Daly Waters AWS
17.9
18.3
in 1940
19.4
31
Larrimah
18.6
18.7
in 1982
19.9
27
Tindal RAAF AWS
19.3
19.5
in 2002
20.7
15



Record highest daily minimum temperature for 2006
Highest daily minimum
temperature
(°C)
Previous
highest
Normal Years of
record
Jervois
33.7
on 5 Jan
32.9
on 7 Jan 2004
14.4
24



Summaries

Summary statistics for 2006
Maximum temperatures
(°C)
Minimum temperatures
(°C)
Rainfall
(millimetres)
Mean
for
2006
Diff
from
normal
Highest
for
2006
Mean
for
2006
Diff
from
normal
Lowest
for
2006
Total
for
2006
Normal
annual
total
Rank
of
2006
Fraction
of annual
normal
Darwin-Daly (district 14GA)
Batchelor Aero AWS
33.1
39.8
2 Dec
20.5
9.1
20 Jul
1931.8
Black Point
31.2
−0.1
35.5
19 Dec
23.9
−0.1
15.8
1 Sep
Cape Don AWS
30.5
34.8
19 Nov
24.4
19.2
19 Jul
1223.2
Central Arnhem Plateau AWS
30.9
38.3
30 Oct
19.9
9.0
6 Aug
1712.8
Darwin Airport
31.8
−0.2
37.0
8 Sep
22.4
−0.8
13.6
20 Jul
1804.6
1700.4
normal
106%
Delamere Weapons Range AWS
33.0
43.0
1 Dec
20.1
9.0
13 Jun
1058.4
Douglas River
33.4
−1.0
40.5
16 Nov
19.5
−0.5
7.0
31 Aug
Dum In Mirrie AWS
31.2
36.5
8 Sep
22.4
12.7
31 May
1347.4
Jabiru Airport AWS
33.9
−0.3
39.7
21 Oct
22.2
−0.3
12.9
19 Jul
2099.8
1478.2
highest
142%
Katherine Aviation Museum
33.2
−1.0
42.5
15 Nov
19.3
−1.1
6.3
30 May
Mango Farm
33.2
−0.9
40.8
15 Nov
20.2
−0.3
8.1
20 Jul
1750.2
1331.3
very high
131%
Middle Point AWS
33.4
40.2
31 Oct
19.9
7.4
5 Aug
1780.4
Oenpelli
40.1
10 Nov
12.9
19 Jul
1561.5
1396.2
normal
112%
Pine Creek Council
32.6
39.9
2 Dec
20.8
11.1
30 May
1763.0
Pirlangimpi AWS
31.9
−0.2
36.4
5 Dec
22.2
+0.2
13.4
20 Jul
1595.0
2042.5
low
78%
Point Fawcett AWS
30.9
34.4
20 Nov
21.6
10.9
20 Jul
1577.2
Port Keats Aero
37.9
6 Dec
10.7
31 May
687.6
Tindal RAAF AWS
33.3
−0.5
42.5
10 Nov
19.3
−1.3
6.0
30 May
984.4
1144.4
low
86%
Arnhem (district 14BC)
Alyangula Police
30.6
−0.8
36.5
5 Dec
22.2
−0.3
13.2
19 Jul
1390.8
1159.0
high
120%
Gove Airport
29.9
−0.8
36.3
10 Nov
22.2
−0.2
12.1
31 Aug
1858.4
1427.4
very high
130%
Groote Eylandt Airport AWS
31.5
38.2
11 Nov
20.1
8.0
18 Jul
1142.6
Maningrida
35.6
9 Jan
11.0
1 Jul
963.5
1316.5
low
73%
Maningrida Aero AWS
31.6
35.5
9 Jan
21.9
11.8
19 Jul
769.4
Milingimbi AWS
31.5
36.3
10 Nov
22.4
12.8
19 Jul
745.2
Ngayawili AWS
31.0
35.3
23 Nov
22.4
12.5
5 Aug
2044.8
Warruwi
31.0
−0.2
35.7
5 Dec
24.0
−0.3
16.9
19 Jul
741.0
1163.9
low
64%
Roper-Mcarthur (district 14DE)
Borroloola AWS
32.7
−1.1
43.9
15 Nov
19.1
−0.8
5.5
19 Jul
1182.8
Centre Island AWS
30.9
−0.4
39.2
8 Jan
23.5
−0.4
14.7
13 Jun
1582.8
999.9
high
158%
Daly Waters AWS
33.6
−0.2
44.5
15 Nov
17.9
−1.5
4.2
27 Jul
818.4
627.8
high
130%
Larrimah
33.1
−0.9
43.1
15 Nov
18.6
−1.3
4.5
30 May
870.9
844.3
normal
103%
McArthur River Mine
33.6
−0.8
43.8
15 Nov
19.3
−0.2
5.9
7 Aug
768.6
751.9
normal
102%
Ngukurr
33.6
43.6
10 Nov
21.1
0
10.6
19 Jul
799.2
741.5
normal
108%
Wollogorang
32.7
−1.0
43.6
2 Dec
18.4
−0.2
5.4
7 Aug
1789.6
959.0
highest
187%
Victoria (district 14F)
Kidman Springs
34.0
−1.0
44.0
10 Nov
19.5
−0.8
6.6
20 Jul
Lajamanu AWS
33.0
44.0
1 Dec
17.1
3.0
30 May
871.8
492.0
very high
177%
Timber Creek
34.3
−0.6
43.7
15 Nov
20.1
−1.2
7.6
31 May
1193.8
921.1
highest
130%
Victoria River Downs
33.3
−1.1
42.8
2 Dec
18.4
−1.3
3.0
12 Jun
826.6
637.0
high
130%
Wave Hill
33.3
−0.9
44.6
10 Jan
17.8
−1.2
2.4
7 Aug
752.9
692.8
normal
109%
Barkly (district 15A)
Brunette Downs
32.8
−0.7
44.2
9 Jan
18.6
−0.2
3.0
13 Jun
577.4
415.5
high
139%
Elliott
45.8
10 Jan
7.0
13 Jun
966.7
590.2
very high
164%
Tennant Creek Airport
31.3
−0.5
43.6
10 Jan
19.4
−0.4
6.1
13 Jun
609.2
456.3
high
134%
Alice Springs (district 15B)
Ali Curung
31.9
−0.5
44.1
1 Dec
16.5
−0.2
1.0
20 Jun
494.2
385.3
high
128%
Alice Springs Airport
29.9
+1.2
43.3
17 Feb
14.2
+1.0
−3.8
13 Jun
143.2
282.8
low
51%
Arltunga
28.9
42.1
29 Nov
14.2
−4.8
21 Jun
137.9
290.7
low
47%
Curtin Springs
30.7
+1.1
44.5
10 Jan
14.7
+1.4
−2.4
8 Jun
Jervois
31.5
+0.5
45.3
30 Nov
16.3
+1.8
0.5
9 Jul
144.8
291.3
low
50%
Kulgera
29.3
+1.0
44.7
29 Nov
14.9
+0.9
−4.5
13 Jun
126.9
258.0
low
49%
Papunya
31.3
43.5
26 Nov
15.8
−0.7
21 Jun
Rabbit Flat
33.0
−0.8
44.6
1 Dec
15.7
−1.1
−0.4
21 Jun
693.4
Territory Grape Farm AWS
30.8
43.0
11 Jan
14.2
−1.0
20 Jun
296.6
322.9
normal
92%
Watarrka
31.0
+0.4
49.0
31 Dec
16.7
+1.0
−2.0
10 Jun
105.9
317.4
low
33%
Wulungurru AWS
32.7
45.5
11 Jan
19.6
2.4
13 Jun
364.4
Yuendumu
31.1
+0.6
42.8
10 Jan
14.9
−0.8
−1.1
21 Jun
380.1
370.6
normal
103%
Yulara Aero AWS
30.3
+0.3
43.6
26 Nov
14.8
+0.8
−1.2
20 Jun
234.6
302.6
normal
78%

Notes

This statement has been prepared based on information available at 10 am on Wednesday 3 January 2007. 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 averages based on observations from the years 1800 to 2005. They are not shown for sites with less than 10 years of record in that time.

The Rank indicates about where rainfall this time ranks in the climate record for the site.

Further information

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