28 Day Rainfall Forecast
Northern Tablelands Rain Forecast
Northern Tablelands 28-day Rainfall Forecast
Sun Mon Tue Wed Thu Fri Sat29Hig30HigOct 1Hig2Med34567Med8Low910Low11Med12Low13Med14Hig15Med16Med17Med18Low19Med20Low2122Med23Low24Med25Med2627MedCHANCE OF RAINFALL WITHIN DISTRICTNil< 25%Low25 - 50%Medium50 - 75%High≥ 75%
Issue NotesIssued 28 Sep 2021
The hemispheric long wave pattern has been relatively fast moving in recent weeks. There are six main troughs. Currently the most significant troughs are near the longitudes of the Indian Ocean, Western Australia, eastern Australia, the south Pacific, South America, and the Atlantic Ocean.
Over southern and eastern Australia the cold front events with potential to bring widespread rain are now expected about 5 October to 9 October, 19 October to 23 October, and 29 October to 2 November. Rain events originating in the tropics and moving south are possible about 9 October to 13 October, 22 October to 26 October, and 29 October to 2 November. Over Western Australia the strongest cold fronts should occur about 5 October to 9 October, 14 October to 18 October, and 28 October to 1 November.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.