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Central North 28-day Rainfall Forecast

Sun
Mon
Tue
Wed
Thu
Fri
Sat
4
low
5
6
low
7
med
8
high
9
high
10
high
11
high
12
med
13
low
14
low
15
16
low
17
med
18
med
19
low
20
21
22
low
23
med
24
med
25
med
26
med
27
low
28
med
29
low
30
med
Oct 1
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 five main troughs. Currently the most significant troughs are near the longitudes of South Africa, the southwest Indian Ocean, Western Australia, New Zealand, the south Pacific, and South America.
Summary:
Over southern and eastern Australia the cold front events with potential to bring widespread rain are now expected about 8 September to 12 September, 24 September to 28 September, and 2 October to 6 October. Rain events originating in the tropics and moving south are possible about 31 August to 4 September.
Over Western Australia the strongest cold fronts should occur about 8 September to 12 September, 23 September to 27 September, and 27 September to 1 October.

Issued Sep 2

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.

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