Northern Country 28-day Rainfall Forecast

Sun
Mon
Tue
Wed
Thu
Fri
Sat
21
med
22
low
23
med
24
high
25
high
26
low
27
28
29
low
30
med
Oct 1
med
2
med
3
4
low
5
low
6
7
low
8
9
10
low
11
low
12
13
low
14
15
low
16
low
17
low
18
low
Chance of rainfall within district
nil
< 25%
low
25% to 50%
med
50% to 75%
high
≥ 75%

Issue Notes

The hemispheric long wave pattern has remained stable in recent weeks. There are four main troughs. Currently the most significant troughs are near the longitudes of South Africa, the Indian Ocean, and eastern Australia.
Summary:
Over southern and eastern Australia the cold front events with potential to bring widespread rain are now expected about 29 September to 3 October, 19 October to 23 October, and 24 October to 28 October. Rain events originating in the tropics and moving south are possible about 27 September to 1 October, 1 October to 5 October, and 15 October to 19 October.
Over Western Australia the strongest cold fronts should occur about 30 September to 4 October, 18 October to 22 October, and 24 October to 28 October.

Issued Sep 20

Forecast Explanation

This forecast is produced by a multi-model ensemble consisting of dynamical atmospheric models, which are forced by the latest observed atmosphere, ocean, land and ice conditions. The models are designed to simulate features of the real atmosphere, including the daily movement of long and short wave patterns in the Southern Hemisphere.

The future probability of rain in each district is estimated using output from the multi-model ensemble, combined with historical information about the difference between the model forecasts and observed rainfall.

In this deterministic framework the skill of the forecast tends to decrease with time, however the forecasts are updated daily to provide the latest estimates of rainfall probability out to 28 days.

Display Your Local Weather

Weather News

Broken Hill cops a drenching with half of all last year's rainfall falling in just 20 minutes

18:56 EST

Dry outback towns in the New South Wales far west have been drenched with their heaviest rainfalls in recent years including Broken Hill, hit with unusual flash flooding.

Northern Territory September rain and thunderstorms

13:12 EST

A low pressure trough has drawn in tropical moisture and spread it across northern parts of the Northern Territory, resulting in significant September rain and a few storms.