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Goldfields 28-day Rainfall Forecast

Sun
Mon
Tue
Wed
Thu
Fri
Sat
2
3
4
5
6
7
low
8
9
low
10
11
12
13
14
15
16
low
17
med
18
low
19
20
low
21
22
low
23
low
24
med
25
low
26
low
27
high
28
low
29
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 South Africa, Western Australia, New Zealand, the southeast 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 17 August to 21 August, 23 August to 27 August, and 30 August to 3 September. Rain events originating in the tropics and moving south are possible about 30 July to 3 August.
Over Western Australia the strongest cold fronts should occur about 10 August to 14 August, 17 August to 21 August, and 23 August to 27 August.

Issued Aug 1

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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