|Chance of rainfall within district|
25% to 50%
50% to 75%
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 the Indian Ocean, eastern Australia, the south Pacific, the southeast Pacific, and South America.
Over southern and eastern Australia the cold front events with potential to bring widespread rain are now expected about 11 June to 15 June, 23 June to 27 June, and 27 June to 1 July. Rain events originating in the tropics and moving south are possible about 1 June to 5 June, 16 June to 20 June, and 23 June to 27 June.
Over Western Australia the strongest cold fronts should occur about 11 June to 15 June, 23 June to 27 June, and 27 June to 1 July.
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.
09:14 EST The organisers of an appeal in Queensland's west say the local community is becoming "drought fatigued" but it is still vital to raise awareness of how city people can help drought-affected towns.