Hunter 28-day Rainfall Forecast

Sun
Mon
Tue
Wed
Thu
Fri
Sat
2
3
4
5
low
6
med
7
med
8
low
9
low
10
low
11
med
12
high
13
high
14
med
15
med
16
low
17
low
18
med
19
high
20
high
21
high
22
low
23
med
24
low
25
low
26
low
27
med
28
high
29
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 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 South America.
Summary:
Over southern and eastern Australia the cold front events with potential to bring widespread rain are now expected about 8 October to 12 October, 20 October to 24 October, and 27 October to 31 October. Rain events originating in the tropics and moving south are possible about 20 October to 24 October, 24 October to 28 October, and 28 October to 1 November.
Over Western Australia the strongest cold fronts should occur about 8 October to 12 October, 12 October to 16 October, and 17 October to 21 October.

Issued Oct 1

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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