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Goldfields 28-day Rainfall Forecast

Sun
Mon
Tue
Wed
Thu
Fri
Sat
6
7
low
8
low
9
10
11
12
13
14
15
16
17
18
19
med
20
low
21
22
low
23
24
low
25
low
26
med
27
low
28
29
30
31
Sep 1
2
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 four main troughs. Currently the most significant troughs are near the longitudes of South Africa, Western Australia, eastern 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 12 August to 16 August, 26 August to 30 August, and 6 September to 10 September. Rain events originating in the tropics and moving south are possible about 26 August to 30 August, and 7 September to 11 September.
Over Western Australia the strongest cold fronts should occur about 12 August to 16 August, 26 August to 30 August, and 6 September to 10 September.

Issued Aug 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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