Forecast issued at 4:30 pm EST on Wednesday 28 September 2016.
A high pressure ridge over eastern Australia is weakening as a complex low pressure system develops in the Bight. This low, together with a strong cold front, will move across New South Wales from late Wednesday night through to Friday, bringing widespread rain and strong winds to many parts of New South Wales in this period. Another weak high pressure ridge will build across the state on Saturday, before the next cold front is expected to cross the state during Sunday and Monday.
Forecast for the rest of Wednesday
Rain developing in the far west this afternoon, extending to the western slopes by late this evening. Thunderstorms likely in the far west, and moderate to heavy falls are possible in the far southwest. Dry in the east with high cloud increasing. North to northeasterly winds, fresh to strong in the far west.
Thursday 29 September
Rain and possible gusty thunderstorms through most areas, with possibly heavy falls about the central and south west. Rain clearing from the west through the day, although with isolated showers and thunderstorms persisting about the southwest. Snow possible above about 1200 metres about the Alpine areas from late afternoon. Gusty and strong west to northwesterly winds through most areas, particularly the far west. Winds gale force at times in parts of the far west, central west and over parts of the ranges.
Friday 30 September
Showers persisting through most southern and central areas, particularly about the central and southwestern slopes and the Riverina where thunderstorms are also possible. Snow possible above 900 to 1000 metres on the southern and central ranges. Cold and fresh to strong westerly winds.
Saturday 1 October
Scattered showers about the southeastern inland and the central west slopes and ranges, clearing during the afternoon. Partly cloudy for the remainder. Westerly winds, remaining fresh in the east.
Sunday 2 October
Cloud increasing. Rain developing in the west, extending to the western slopes of the ranges late in the day. North to northwesterly winds, turning more westerly in the west later.
The next routine forecast will be issued at 4:30 am EST Thursday.