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28 Day Rainfall Forecast

  1. Hunter Rain Forecast


    Hunter 28-day Rainfall Forecast
    Sun Mon Tue Wed Thu Fri Sat
    4
    5
    6
    Low
    7
    Med
    8
    Med
    9
    Hig
    10
    Med
    11
    Low
    12
    Med
    13
    Low
    14
    Med
    15
    16
    Med
    17
    Med
    18
    Low
    19
    Low
    20
    Low
    21
    Low
    22
    23
    24
    25
    Med
    26
    27
    Low
    28
    Med
    29
    30
    Med
    31
    Med
    Sep 1
    Low
    CHANCE OF RAINFALL WITHIN DISTRICT
    Nil
    < 25%
    Low
    25 - 50%
    Medium
    50 - 75%
    High
    ≥ 75%

    Issue Notes

    Issued 3 Aug 2020

    The hemispheric long wave pattern has remained stable in recent weeks. There are five main troughs. Currently the most significant troughs are near the longitudes of the southwest Indian Ocean, Western Australia, New Zealand, 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 10 August to 14 August, 21 August to 25 August, and 3 September to 7 September. Rain events originating in the tropics and moving south are possible about 17 August to 21 August, 24 August to 28 August, and 3 September to 7 September. Over Western Australia the strongest cold fronts should occur about 10 August to 14 August, 22 August to 26 August, and 28 August to 1 September.

    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.