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Central North 28-day Rainfall Forecast

Sun
Mon
Tue
Wed
Thu
Fri
Sat
7
med
8
high
9
high
10
high
11
med
12
high
13
high
14
high
15
high
16
high
17
med
18
med
19
high
20
high
21
med
22
low
23
low
24
low
25
med
26
high
27
med
28
med
29
med
30
med
31
high
Jun 1
med
2
med
3
med
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 been relatively fast moving in recent weeks. There are five main troughs. Currently the most significant troughs are near the longitudes of the southwest Indian Ocean, the Indian Ocean, eastern Australia, the south Pacific, and the Atlantic Ocean.
Summary:
Over southern and eastern Australia the cold front events with potential to bring widespread rain are now expected about 28 May to 1 June, 3 June to 7 June, and 7 June to 11 June. Rain events originating in the tropics and moving south are possible about 10 May to 14 May, and 26 May to 30 May.
Over Western Australia the strongest cold fronts should occur about 24 May to 28 May, 28 May to 1 June, and 7 June to 11 June.

Issued May 5

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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