Darwin-Daly 28-day Rainfall Forecast
|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 four main troughs. Currently the most significant troughs are near the longitudes of the Indian Ocean, New Zealand, the south Pacific, and the Atlantic Ocean.
Over southern and eastern Australia the cold front events with potential to bring widespread rain are now expected about 14 September to 18 September, 22 September to 26 September, and 1 October to 5 October. Rain events originating in the tropics and moving south are possible about 26 August to 30 August.
Over Western Australia the strongest cold fronts should occur about 14 September to 18 September, 21 September to 25 September, and 1 October to 5 October.
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.
Shoalhaven oyster farmers face hundreds of thousands of dollars in losses as floods wash away salinity
Oyster farms flooded in this week's downpour at Greenwell Point on the New South Wales south coast could lose hundreds of thousands of dollars' worth of oysters.
The Bureau of Meteorology says spring could be wetter than normal for much of western and central Australia.
A moisture laden southerly flow directed by an East Coast Low interacted with an upper cold pool over parts of Victoria yesterday producing persistent and heavy showers.