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CW Slopes & Plains 28-day Rainfall Forecast

Sun
Mon
Tue
Wed
Thu
Fri
Sat
Jun 1
med
2
med
3
high
4
high
5
high
6
med
7
8
9
low
10
low
11
12
low
13
low
14
low
15
low
16
17
low
18
19
20
low
21
med
22
med
23
low
24
25
26
27
28
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 the southwest Indian Ocean, Western Australia, 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 5 June to 9 June, 14 June to 18 June, and 30 June to 4 July. Rain events originating in the tropics and moving south are possible about 5 June to 9 June, and 24 June to 28 June.
Over Western Australia the strongest cold fronts should occur about 14 June to 18 June, 23 June to 27 June, and 30 June to 4 July.

Issued May 30

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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