New South WalesSynoptic Situation: A cold front that move through most of New south Wales yesterday is continuing to linger as a low pressure trough in the states northeast this afternoon. A low pressure system is currently developing within this trough, offshore near to Port Stephens. This will reinforce a vigorous southerly flow along much of the coast during the next 24 hours, with likely gales about central parts of the coast. The low should weaken during Wednesday and Thursday as a high pressure system becomes dominant over the Tasman Sea, pushing a ridge into New South Wales, and bringing a gradual return to northeasterly winds. Another cold front looks set to arrive on the weekend.
Wind and wave forecasts are averages. Wind gusts can be 40 per cent stronger than the forecast, and stronger still in squalls and thunderstorms. Maximum waves can be twice the forecast height.
Batemans Coast: Ulladulla to Montague Island
Wednesday 18 SeptemberWinds: Southeasterly 15 to 20 knots, reaching up to 25 knots offshore north of Moruya Heads during the day. Winds turning east to northeasterly in the evening.
Seas: 1 to 2 metres.
Swell 1: Easterly 1.5 to 2 metres.
Swell 2: Southerly 1 to 1.5 metres.
Weather: Cloudy. 50% chance of showers during this afternoon and evening. The chance of a thunderstorm late this afternoon and evening.
Thursday 19 SeptemberWinds: Northeasterly 15 to 20 knots.
Seas: 1 to 1.5 metres, increasing to 1.5 to 2 metres by early evening.
Swell 1: Easterly 2 metres, tending northeasterly 1.5 to 2 metres by early evening.
Swell 2: Southerly around 1 metre.
Weather: Partly cloudy. 70% chance of showers and the chance of a thunderstorm.
Friday 20 SeptemberWinds: North to northeasterly 15 to 25 knots increasing to 25 to 30 knots during the afternoon.
Seas: 1.5 to 2.5 metres.
Swell 1: Southerly below 1 metre, increasing to 1 to 1.5 metres during the afternoon.
Swell 2: Easterly 1.5 metres, tending northeasterly around 1 metre during the afternoon.
Weather: Partly cloudy.