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Lake St. Clair

Warnings

Forecast

Marine Forecast

Issued 03:00 AM EST 16 November 2025

Today Tonight and Monday.

Strong wind warning in effect.

Wind northwest 20 knots increasing to northwest 25 early this morning then diminishing to northwest 15 Monday morning. Wind diminishing to northwest 10 near noon Monday then becoming light Monday evening.

Waves

Issued 03:00 AM EST 16 November 2025
Today Tonight and Monday. Waves 0.5 to 1 metre subsiding to 0.5 or less Monday morning and to less than 0.5 Monday afternoon.

Extended Forecast

Issued 03:00 AM EST 16 November 2025
Tuesday Wind light.
Wednesday Wind light.
Thursday Wind light.

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

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

Ice Forecasts

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

Warnings (In effect)

Strong wind warning in effect

Lake St. Clair

Issued 03:00 AM EST 16 November 2025

'Strong' winds of 20 to 33 knots are occurring or expected to occur in this marine area. Please refer to the latest marine forecasts for further details and continue to monitor the situation through Canadian Coast Guard radio or Weatheradio stations.

Synopsis

Technical Marine Synopsis

Issued 3:00 AM EST 16 November 2025 Today Tonight and Monday At 3:00 a.m. EST today low 984 mb located near Montréal.
By 3:00 a.m. EST Monday departing low 976 mb located over New
Brunswick.

At 3:00 a.m. EST today ridge located on a line northwest-southeast
over North Dakota.
By 3:00 a.m. EST Monday ridge from 1025 mb high located on a line
northwest-southeast over Lake of the Woods.

Great Lakes - Lake Erie and Lake Ontario Area

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Marine Weather for Canada

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