Alice Springs 28-day Rainfall Forecast

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Sep 1

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, and the south Pacific.
Summary:
Over southern and eastern Australia the cold front events with potential to bring widespread rain are now expected about 11 August to 15 August. Rain events originating in the tropics and moving south are possible about 11 August to 15 August.
Over Western Australia the strongest cold fronts should occur about 11 August to 15 August.

Issued Aug 13

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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When will the rain give Adelaide a break?

12:57 AEST A series of troughs, cold fronts, and low pressure systems have been bringing showers, rain, and strong winds to Adelaide since last Wednesday.