Southern Tablelands 28-day Rainfall Forecast

Sun

Mon

Tue

Wed

Thu

Fri

Sat

26
low

28
low

29
med

30
low

31
med

Aug 1
low

6
low

8
med

10
low

12
low

13
low

15
low

17
med

18
high

19
low

20
med

21
med

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 southeast Pacific.
Summary:
Over southern and eastern Australia the cold front events with potential to bring widespread rain are now expected about 5 August to 9 August, 21 August to 25 August, and 25 August to 29 August. Rain events originating in the tropics and moving south are possible about 13 August to 17 August, and 22 August to 26 August.
Over Western Australia the strongest cold fronts should occur about 3 August to 7 August, 15 August to 19 August, and 25 August to 29 August.

Issued Jul 24

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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Weather News

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Cold front to blame for confusing temperatures and expected fog in Canberra

13:23 AEST Minimum temperatures have been on a bit of a see-saw during the last 48 hours, with the early morning mimum on Wednesday morning jumping by more than 10 degrees compared to early morning Tuesday, nearly eight degrees above the long-term monthly average for July.