Perth Local Waters

View the current warnings for Western Australia

Forecast issued at 9:39 pm WST on Monday 6 May 2013.

Weather Situation

A developing low pressure system is approaching the southwest of the state, with a strong cold front approaching the entire west coast on Tuesday evening. The low will remain to the southwest of the state on Wednesday as it deepens further. A vigorous westerly flow will develop Wednesday, and persit as this system slowly moves southeast Wednesday and into Thursday. Another cold front will move over Perth on Thursday and Friday.

Forecast for Monday until midnight

Winds
South to southeasterly below 10 knots.
Seas
Below 0.5 metres.
Swell
West to southwesterly 1 to 1.5 metres.

Tuesday 7 May

Gale warning for Tuesday for Perth Local Waters

Winds
Northeasterly around 10 knots becoming north to northwesterly 15 to 20 knots during the morning then strengthening to 20 to 30 knots in the afternoon and further increasing to 30 to 35 knots in the evening.
Seas
Up to 1 metre, increasing to 2 to 3 metres around midday.
Swell
West to southwesterly 1 to 1.5 metres, increasing to 1.5 to 2.5 metres before dawn, then tending westerly 2.5 to 4 metres during the afternoon.
Weather
Isolated thunderstorms during the evening, possibly severe with destructive winds.

Wednesday 8 May

Winds
Northwesterly 25 to 30 knots tending westerly in the late afternoon then increasing to 30 to 40 knots in the evening.
Seas
2.5 to 3 metres, increasing to 3 to 4 metres by early evening.
Swell
Westerly 3 to 4 metres, decreasing to 2.5 to 3 metres , then increasing to 2.5 to 4 metres around dawn.
Weather
Isolated thunderstorms.

Thursday 9 May

Winds
Westerly 25 to 40 knots decreasing to 20 to 30 knots during the morning.
Seas
4 metres, decreasing below 3 metres during the morning.
Swell
West to southwesterly 4 to 6 metres, decreasing to 2.5 to 4 metres during the afternoon.
Weather
Isolated thunderstorms.

Friday 10 May

Winds
Westerly 20 to 30 knots tending southwesterly 15 to 25 knots during the day.
Seas
1.5 to 2.5 metres.
Swell
Southwesterly 2 to 3 metres, increasing to 2.5 to 4 metres during the afternoon or evening.

Please be awareWind gusts can be 40 percent stronger than the averages given here, and maximum waves may be up to twice the height. Wind warnings are issued for today and tomorrow and describe the highest category of wind warning for that day.

The next routine forecast will be issued at 4:00 am WST Tuesday.

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