Central Coast 28-day Rainfall Forecast

Sun

Mon

Tue

Wed

Thu

Fri

Sat

18
med

19
low

20
low

21
high

22
high

23
high

24
low

25
med

26
med

27
med

28
med

29
med

Mar 1
med

2
low

3
low

4
low

5
med

6
med

10
low

11
med

12
med

13
low

14
low

15
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 remained stable in recent weeks. There are six main troughs. Currently the most significant troughs are near the longitudes of South Africa, the southwest Indian Ocean, Western Australia, New Zealand, the south Pacific, and the Atlantic Ocean.
Summary:
Over southern and eastern Australia the cold front events with potential to bring widespread rain are now expected about 24 February to 28 February, 28 February to 3 March, and 22 March to 26 March. Rain events originating in the tropics and moving south are possible about 22 February to 26 February, and 27 February to 2 March.
Over Western Australia the strongest cold fronts should occur about 24 February to 28 February, 28 February to 3 March, and 7 March to 11 March.

Issued Feb 17

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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