A HAZARDOUS surf warning has been issued for the Mid North Coast for Tuesday (September 21) as a weather front moves across the state.
Significant areas of NSW and the ACT will experience gusty and potentially damaging wind conditions, building from Monday afternoon and through tomorrow.
These winds have the potential to bring down trees and powerlines, and the NSW State Emergency Service is urging people to clean-up loose items around their properties, take care if involved in outdoor activities, and reconsider marine activities such as boating or rock fishing, especially with school holiday underway.
The cool change will bring a significant drop in temperatures of up to 10 degrees in many places, according to Bureau of Meteorology spokesperson Jackson Browne.
Snow is likely to fall along the ranges through to the Queensland border, with snow fall on the southern ranges above 900 metres by Monday night, and above 600 metres by Tuesday morning.
Snow is likely on the Central Tablelands above 1000 metres, and above 700 metres on Tuesday. Snow may also reach the Northern Tablelands and higher parts of the Northwest Slopes and Plains above 1000 metres on Tuesday.
Snowfall should clear across the state early on Wednesday morning, Mr Browne said.
Snow and ice may lead to dangerous conditions on the roads, and people are being urged to drive to conditions.
Strong winds will develop in the wake of the front over much of the coast, with a large south to southeasterly swell developing during Tuesday.
Hazardous surf conditions are possible for areas between about Sydney and Port Macquarie, most likely at south-facing beaches, developing on Tuesday and persisting into Wednesday.
Strong winds, large waves and showers are also possible at Lord Howe Island and Norfolk Island between Tuesday and Thursday. Impacts will depend on the strength and position of a developing low.
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