Mallee 28-day Rainfall Forecast

Sun

Mon

Tue

Wed

Thu

Fri

Sat

Mar 1

12
low

16
low

17
med

18
low

19
high

20
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 five main troughs. Currently the most significant troughs are near the longitudes of South Africa, Western Australia, New Zealand, 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 2 March to 6 March, 8 March to 12 March, and 17 March to 21 March. Rain events originating in the tropics and moving south are possible about 6 March to 10 March, and 21 March to 25 March.
Over Western Australia the strongest cold fronts should occur about 8 March to 12 March, 17 March to 21 March, and 27 March to 31 March.

Issued Feb 21

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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