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Southern Lake Huron

Warnings

Forecast

Marine Forecast

Issued 03:00 AM EDT 20 July 2025

Today Tonight and Monday.

Wind west 10 knots increasing to north 15 early this morning then veering to northeast 15 overnight. Wind diminishing to northeast 10 Monday morning then increasing to north 15 Monday afternoon.

Showers ending early this morning with a risk of thunderstorms.

Waves

Issued 03:00 AM EDT 20 July 2025
Today Tonight and Monday. Waves 0.5 metres or less building to 0.5 to 1 this morning then subsiding to 0.5 or less near noon Monday. Waves building to 0.5 to 1 Monday evening.

Extended Forecast

Issued 03:00 AM EDT 20 July 2025
Tuesday Wind light.
Wednesday Wind south 15 knots.
Thursday Wind southwest 15 knots.

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Map of Great Lakes - Lake Huron marine weather areas Cove Island Goderich Oshawa Executive Airport CFB Trenton Western Islands Wiarton Airport Point Petre Lake Simcoe Regional Airport Parry Sound Harbour Toronto City Centre Airport Muskoka Airport Lagoon City Brockville Hamilton Munro Int'l Airport Sarnia Chris Hadfield Airport Tobermory Cobourg Harrow AAFC Long Point Port Weller Burlington Lift Bridge St. Catharines / Niagara District Airport Southeast Shoal Point Pelee Vineland Station Welland-Pelham Erieau Windsor Airport Port Colborne Killarney South Georgian Bay - 45143 Grimsby - 45139 Georgian Bay - 45137 Prince Edward Point - 45135 Port Stanley - 45132 Lake St Clair - 45147 South Lake Huron - 45149 Sault Ste. Marie Airport Lake Simcoe - 45151 Collingwood Greater Sudbury Airport North Bay Airport Kingston Airport Peterborough Municipal Airport Grenadier Island Port Colborne - 45142 Great Duck Island Ajax - 45159 Gore Bay-Manitoulin Airport North Channel - 45154 Lake Nipissing - 45152
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land station Land Station
Ice Conditions

*Ice Forecast and Warnings also apply to U.S. waters

Ice Forecasts

Lake Huron

Issued 12:00 PM EDT 16 May 2025 Forecasts have ended for the season.

Ice Forecasts

Lake Michigan

Issued 12:00 PM EDT 16 May 2025 Forecasts have ended for the season.
Warnings

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 3:00 AM EDT 20 July 2025 Today Tonight and Monday At 3:00 a.m. EDT today trough located on a line northeast-southwest
over Lake Simcoe.
By 3:00 a.m. EDT Monday departing trough located over the East
Coast of the U.S.

At 3:00 a.m. EDT today high 1018 mb located over Lake of the Woods.
By 3:00 a.m. EDT Monday high 1020 mb located over Lake Superior.

Great Lakes - Lake Huron Area

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Marine Weather for Canada

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