IDW11130
Australian Government Bureau of Meteorology
Western Australia
Issued at 4:00 am WST on Tuesday 17 September 2019
for the period until midnight WST Thursday 19 September 2019.
Please be aware
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.
A ridge of high pressure lies south of the state while a surface trough lies inland from the west coast. The trough will continue to move eastwards through inland parts through to Tuesday and moving east into South Australia on Wednesday. A strong cold front will move across southwestern parts later on Wednesday.
Winds: Southerly 15 to 20 knots. Seas: 1 to 1.5 metres, decreasing to 1 metre during the morning, then increasing to 1 to 1.5 metres by early evening. Swell: Southwesterly 2 to 2.5 metres. Weather: Sunny.
Winds: Southerly 15 to 20 knots. Seas: 1 to 1.5 metres, decreasing to 1 metre during the morning, then increasing to 1 to 1.5 metres by early evening. Swell: Southwesterly 1 to 1.5 metres inshore, increasing to 1.5 to 2 metres offshore. Weather: Mostly sunny.
Winds: Southerly 20 to 30 knots. Seas: 1 to 2 metres. Swell: Southwesterly 1.5 metres, increasing to 1.5 to 2.5 metres during the morning. Weather: Partly cloudy.
Winds: South to southeasterly 10 to 15 knots tending south to southwesterly in the middle of the day. Seas: 1 to 1.5 metres, decreasing below 1 metre during the morning. Swell: Southwesterly 1.5 to 2 metres. Weather: Mostly sunny.
Winds: Southerly 10 to 15 knots becoming variable about 10 knots in the morning then becoming southwesterly 15 to 20 knots in the early afternoon. Seas: Around 1 metre, increasing to 1 to 1.5 metres offshore south of Denham during the afternoon. Swell: Southwesterly 1 to 1.5 metres inshore, increasing to 1.5 to 2 metres offshore. Weather: Partly cloudy.
Winds: South to southwesterly 10 to 15 knots tending south to southeasterly 15 to 20 knots during the day. Seas: 1 to 1.5 metres, increasing to 1 to 2 metres during the morning. Swell: Southwesterly 1.5 to 2.5 metres, increasing to 2 to 4 metres during the morning. Weather: Partly cloudy.
Winds: Variable about 10 knots becoming southwesterly 10 to 15 knots in the late afternoon. Seas: Below 1 metre. Swell: Southwesterly 1.5 to 2 metres, decreasing to 1.5 metres during the afternoon. Weather: Mostly sunny.
Winds: West to southwesterly about 10 knots tending west to northwesterly 10 to 15 knots in the morning then tending west to southwesterly 15 to 20 knots in the early afternoon. Winds reaching up to 25 knots offshore south of Geraldton in the late evening. Seas: Below 1 metre, increasing to 1 to 2 metres around midday. Swell: Southwesterly 1.5 metres, increasing to 1.5 to 2.5 metres during the morning. Weather: Cloudy. 60% chance of showers.
Winds: South to southwesterly 20 to 25 knots tending south to southeasterly 15 to 20 knots during the day. Seas: 1.5 to 2 metres. Swell: Southwesterly 2 to 3 metres, increasing to 3 to 5 metres during the morning. Weather: Cloudy. 60% chance of showers.
Winds: Variable below 10 knots becoming west to southwesterly 10 to 15 knots in the middle of the day then decreasing to about 10 knots in the evening. Seas: Below 1 metre. Swell: Southwesterly 1.5 to 2 metres, decreasing to 1.5 metres during the afternoon. Weather: Partly cloudy.
Winds: West to northwesterly about 10 knots increasing to 15 to 25 knots early in the morning then tending west to southwesterly 20 to 25 knots in the late afternoon. Winds reaching up to 30 knots offshore in the evening. Seas: Below 1 metre, increasing to 1.5 to 2.5 metres during the morning. Swell: Southwesterly 1.5 to 2 metres, increasing to 2 to 3 metres during the afternoon. Weather: Cloudy. 80% chance of showers.
Winds: Southwesterly 20 to 25 knots tending southerly 15 to 20 knots during the morning. Seas: 1.5 to 2.5 metres, decreasing to 1.5 metres during the afternoon. Swell: Southwesterly 3 metres, increasing to 3 to 5 metres during the morning. Weather: Cloudy. 60% chance of showers.
Winds: West to southwesterly about 10 knots increasing to 10 to 15 knots in the late afternoon. Seas: Below 1 metre. Swell: Southwesterly 1.5 to 2 metres, decreasing to 1.5 metres around midday. Weather: Partly cloudy.
Winds: West to northwesterly 10 to 15 knots increasing to 15 to 25 knots in the morning then tending west to southwesterly 25 to 30 knots in the afternoon. Seas: Below 1 metre, increasing to 1 to 2 metres during the morning, then increasing to 2.5 to 3 metres during the afternoon. Swell: Southwesterly 1.5 to 2 metres, increasing to 2 to 3 metres around midday. Weather: Cloudy. 80% chance of showers.
Winds: Southwesterly 20 to 30 knots turning southerly 15 to 20 knots during the morning. Seas: 2 to 3 metres, decreasing to 1.5 to 2 metres during the morning. Swell: Southwesterly 3 to 5 metres. Weather: Cloudy. 60% chance of showers.
Winds: Southwesterly 10 to 15 knots turning westerly in the late morning and early afternoon. Seas: Around 1 metre. Swell: Southwesterly 1 to 1.5 metres inshore, increasing to 1.5 to 2 metres offshore. Weather: Partly cloudy.
Winds: West to northwesterly 15 to 20 knots, reaching up to 30 knots during the afternoon and evening. Winds tending west to southwesterly 20 to 25 knots in the early afternoon. Seas: Around 1 metre, increasing to 1 to 2 metres during the morning, then increasing to 2 to 3 metres around midday. Swell: Southwesterly 1.5 to 2 metres, increasing to 2 to 3 metres during the morning, then increasing to 2.5 to 4 metres by early evening. Weather: Cloudy. 90% chance of showers. The chance of a thunderstorm in the afternoon.
Winds: Southwesterly 20 to 30 knots turning southerly 15 to 20 knots during the day. Seas: 2 to 4 metres, decreasing to 1 to 2 metres during the morning. Swell: Southwesterly 3 to 5 metres. Weather: Cloudy. 60% chance of showers.
The next routine forecast will be issued at 4:00 pm WST Tuesday.
* Calls to 1300 numbers cost around 27.5c incl. GST, higher from mobiles or public phones. Marine forecasts are also available on VHF and HF radio. View the radio schedule on www.bom.gov.au/marine
Check the latest Coastal Waters Forecasts for information on wind, wave and weather conditions for neighbouring coastal zones