Forecast issued at 11:05 am EDT on Monday 22 December 2014.
A high pressure system over the central Tasman Sea will drift further eastwards on Monday. A low pressure trough over western Victoria will remain slow moving on Monday before extending down into western Bass Strait early Tuesday then moving slowly eastwards over central parts of the strait during the day and the east on Tuesday night. The trough will contract inland to sit over northeastern Victoria on Wednesday while a narrow high pressure ridge extends across Tasmania. The low pressure trough will deepen over eastern Victoria on Thursday, Christmas Day, as a cold front approaches from the west, reaching western Bass Strait by the afternoon. The two systems should interact to produce a low pressure system just east of Bass Strait on the morning of Boxing day.
Forecast for Monday until midnight
- South to southeasterly 10 to 15 knots tending east to southeasterly in the evening.
- Below 1 metre, increasing to 1 to 1.5 metres west of Sandy Point.
- Partly cloudy. 20% chance of a shower at night.
Tuesday 23 December
- Variable about 10 knots becoming southwesterly 10 to 15 knots in the morning then increasing to 15 to 25 knots in the afternoon.
- Below 1 metre, increasing to 1 to 1.5 metres west of Sandy Point around midday.
- Partly cloudy. 70% chance of showers. The chance of a thunderstorm in the afternoon.
Wednesday 24 December
- South to southwesterly 10 to 15 knots.
- 1 to 1.5 metres.
- Partly cloudy. 30% chance of showers.
Thursday 25 December
- South to southwesterly 5 to 10 knots increasing to 10 to 15 knots during the early afternoon then tending south to southeasterly during the evening.
- Below 1 metre.
- Partly cloudy.
Please be awareWind gusts can be 40 percent stronger than the averages given here, and maximum waves may be up to twice the height.
The next routine forecast will be issued at 4:40 pm EDT Monday.