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Barkly 28-day Rainfall Forecast

Sun
Mon
Tue
Wed
Thu
Fri
Sat
20
low
21
low
22
23
low
24
med
25
low
26
low
27
28
low
Mar 1
med
2
3
4
5
6
7
8
9
10
11
12
13
14
low
15
low
16
low
17
18
19
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, Western Australia, eastern Australia, the south Pacific, the southeast 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 25 February to 1 March, 2 March to 6 March, and 11 March to 15 March. Rain events originating in the tropics and moving south are possible about 24 February to 28 February, 6 March to 10 March, and 14 March to 18 March.
Over Western Australia the strongest cold fronts should occur about 25 February to 1 March, 7 March to 11 March, and 17 March to 21 March.

Issued Feb 18

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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