Forecast issued at 4:30 am EDT on Sunday 21 December 2014.
A high pressure system off the New South Wales coast will drift slowly east during the coming days, while a trough develops over the state's west. The deepening of this trough early in the new week, assisted by an influx of warm and humid tropical air, is expected to bring unsettled weather to many districts during the coming days. It is likely that the trough will become more mobile during the second half of the week, shifting towards the northeast in response to an approaching upper-level system.
Forecast for the rest of Sunday
Showers and thunderstorms likely in the northeast during the afternoon/early evening, mostly about the ranges. Possible afternoon shower or thunderstorm about the far southern ranges. Fine and mostly sunny elsewhere. Hot day in the far west. East to northeasterly winds in the east, freshening along the coast during the afternoon. Mostly light and variable winds in the west.
Monday 22 December
Fine along the coast, and in the far west. Showers and thunderstorms elsewhere, mainly afternoon. Hot day in the west. North to northeasterly winds, fresh to strong along the coast.
Tuesday 23 December
Showers and thunderstorms across much of the state, although less likely in the far northeast and far southwest. Northwest to northeasterly winds, fresh to strong along the coast, turning southerly in the far southwest later.
Wednesday 24 December
Showers and thunderstorms across much of the state, although less likely in the far northeast, far southwest and on the South Coast. Generally northwest to northeasterly winds, shifting southerly over the southern inland and along southern and central parts of the coast.
The next routine forecast will be issued at 4:30 pm EDT Sunday.