A tropical low within a monsoon trough will generate heavy rains, storms and high winds in northern Western Australia and the Northern Territory.
A wide trough will lead to widespread showers and showers in Victoria, Tasmania and southern Queensland.
Heavy rains are also coming for parts of New South Wales with flash flood warnings for some places.
A halt will clear South Australia and send drier and warmer winds across WA.
Here’s your state-by-state forecast for Monday, December 21, 2020:
A slight to medium probability of showers and thunderstorms in a broad band east of the depression, increasing to a medium to high probability in the extreme north and southeast of the interior. Showers tend to rainy areas throughout the southwest, with moderate to heavy drops possible.
Cooler conditions in western districts under increasing cloudiness. Highs of 34 ° C in Gympie, up to 32 ° C for Mackay and 31 ° C in Brisbane.
Light to moderate winds from the northeast to the northwest, with a moderate trend from the southeast in the southwest and inland from the south near the border with New South Wales. The winds over the southwest move cool from the southwest in the afternoon.
New South Wales and the ACT
There is a severe weather advisory in place of heavy rainfall on the Northwest Foothills and Plains and parts of the North Central Coast, Hunter, the Central Tablelands, the West Central Foothills and Plains, the Upper West Forecast Districts, and the Plateaus from North.
Heavy rains are expected to develop this morning that may cause flash flooding on the northwestern slopes and plains and parts of the central west slopes and plains and in the upper west forecast districts.
Precipitation will increase and spread eastward, reaching the Hunter and parts of the northern plateaus and north central coast, during the afternoon and evening.
Cool and humid with daytime temperatures well below average, particularly in the far west. Highs of just 20 ° C in Broken Hill, 22 ° C in Woolongong and highs of 24 ° C in Sydney and Newcastle.
Winds from the northeast to the southeast, cooling along the coastal strip. A shift to the southwest entering the southwest at the end of the day.
Canberra expects heavy rain and a high of 25 ° C.
Scattered showers that extend from the west during the day, then tend to rain westward from the afternoon, with locally strong drops to the west at night. Isolated thunderstorms in the western and central parts during the afternoon and evening.
A mild and mostly cloudy day with highs of 23 ° C in Melbourne and up to 30 ° C in Shepparton.
Moderate east to southeast winds trending northeast to northwest across the north starting in the afternoon. A moderate southwesterly shift spreading west in the late afternoon.
Fire hazard: high in the north, low to moderate elsewhere.
Showers spread to most areas at noon, then increase north at night. Spotty morning fog.
Highs of 23 ° C in Launceston and 21 ° C in Queenstown and Hobart.
Light winds, with coastal sea breezes in the afternoon.
Areas of rains and showers that move over the State, in addition to the western Pastoral Northwest district, contracting to the coasts at night. It is more likely to rain in the Flinders, Pastoral and Southeast districts during the day.
Cold to mild in the south and temperate to warm in the north, where temperatures will reach 27 ° C in Coober Pedy, 25 ° C in Hawker and 22 ° C in Adelaide.
Moderate to cool southerly winds that extend during the day, cool to strong sometimes on the coasts in the afternoon.
Showers and thunderstorms over the Kimberley River, with possible heavy dips in north and central Kimberley and the adjacent interior.
Showers and storms over the Pilbara and northern Interior. Possible light showers near the coast and adjacent parts to the east of Bremer Bay.
A warm and sunny 32C in Perth, 34C in Kalgoorlie and 41C in Port Hedland.
A medium to high chance of showers and thunderstorms increasing to a very high chance south of Tennant Creek.
Widespread rain over Simpson and South Lasseter districts.
Steep drops are possible in Tanami, Lasseter, Simpson and southern Gregory districts, with significant increases in streams and creeks. Thunderstorms are possible over the Gregory and Tanami districts.
Moderate northwest-northeast winds before a south-southeast shift extending north to Tennant Creek during the day.
Fresh, gusty winds in Gregory, Tanami, Lasseter and Simpson districts.
Fire Hazard: High in Gregory’s District
-Report with Weatherzone and Australian Bureau of Meteorology.