New South Wales

Synoptic 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.

Byron Coast: Point Danger to Wooli

Wednesday 18 September

Winds: South to southwesterly 15 to 20 knots. Winds then becoming east to northeasterly 10 to 15 knots in the early afternoon.
Seas: 1.5 to 2.5 metres, decreasing below 1 metre during the morning.
Swell 1: Southerly 1 to 2 metres, decreasing to 1 to 1.5 metres around midday.
Swell 2: North to northeasterly around 1 metre inshore, increasing to 1 to 1.5 metres offshore.
Weather: 50% chance of showers this morning. The chance of a thunderstorm this morning. Sunny afternoon.

Thursday 19 September

Winds: Northeasterly 10 to 15 knots, reaching up to 20 knots offshore south of Cape Byron in the evening.
Seas: 1 to 1.5 metres.
Swell 1: East to northeasterly 1 to 1.5 metres, tending east to southeasterly around 1 metre during the morning.
Swell 2: Southerly around 1 metre.
Weather: Partly cloudy. 50% chance of showers. The chance of a thunderstorm from the late morning.

Friday 20 September

Winds: Northeasterly 10 to 15 knots.
Seas: 1 to 1.5 metres, decreasing to 1 metre during the morning.
Swell 1: Easterly 1 to 1.5 metres, tending southeasterly around 1 metre during the afternoon or evening.
Swell 2: Southerly around 1 metre.
Weather: Partly cloudy. 60% chance of showers. The chance of a thunderstorm in the morning.