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Goldfields 28-day Rainfall Forecast

Sun
Mon
Tue
Wed
Thu
Fri
Sat
24
25
low
26
med
27
high
28
med
29
med
30
med
Dec 1
high
2
high
3
low
4
low
5
low
6
low
7
low
8
low
9
low
10
11
low
12
med
13
med
14
low
15
low
16
low
17
low
18
19
20
21
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 been relatively slow moving in recent weeks. There are four main troughs. Currently the most significant troughs are near the longitudes of the Indian Ocean, New Zealand, the south Pacific, the southeast Pacific, and South America.
Summary:
Over southern and eastern Australia the cold front events with potential to bring widespread rain are now expected about 3 December to 7 December, 17 December to 21 December, and 22 December to 26 December. Rain events originating in the tropics and moving south are possible about 9 December to 13 December, 14 December to 18 December, and 18 December to 22 December.
Over Western Australia the strongest cold fronts should occur about 2 December to 6 December, 12 December to 16 December, and 17 December to 21 December.

Issued Nov 23

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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