Forecast issued at 4:31 pm EST on Monday 1 September 2014.
A trough and cold front is moving through southwest New South Wales, and is expected to move through the coast on Tuesday. A high pressure system to the west of the Bight is expected to extend a ridge into western New South Wales behind the front. When the trough and frontal system move over the western Tasman Sea, cool upper air in the atmosphere will promote the development of a low pressure system.
Forecast for the rest of Monday
Rain developing across the southwest, extending to central districts and the southeast in the evening. Snow developing on the alps above about 1500 metres in the evening. Fine and partly cloudy elsewhere. North to northwesterly winds, ahead of a southwesterly change in the west.
Tuesday 2 September
Rain in central and eastern parts, contracting further east during the day but persisting as showers over the east in the afternoon. Chance of isolated thunderstorms over central and northeastern parts, but mainly about the central and northern ranges. Showers falling as snow on the southern ranges above about 1100 metres, and possibly about the higher peaks of the central and northern ranges. Fine and partly cloudy in the west. Northwesterly winds in the northeast of the state, tending southwesterly behind the change. Southwesterly winds tending strong and gusty near the coast. Dangerous surf conditions developing at night along southern and central parts of the coast.
Wednesday 3 September
Isolated showers about the coast south from about Port Macquarie and over the southern ranges, with snow above about 900 metres at first. Fine elsewhere. Southwest to southerly winds, fresh to strong along the coast. Dangerous surf conditions along central and northern parts of the coast.
Thursday 4 September
Isolated showers about the coast south from about Port Macquarie. Isolated showers developing over the far southwest later in the day. Fine elsewhere. Fresh to strong south to southwest winds along the coast. Lighter southwest winds inland, tending west to northwesterly in the west during the day.
Friday 5 September
Isolated showers apart from the far northwest, more likely for coastal districts south of Taree. Mostly sunny in the far northwest. Southwesterly winds in the east, northwesterly winds in the west.
The next routine forecast will be issued at 4:30 am EST Tuesday.