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Lake St. Clair

Warnings

Forecast

Marine Forecast

Issued 03:00 AM EST 18 January 2026

Today Tonight and Monday.

Wind southwest 15 knots increasing to southwest 20 Monday morning then veering to west 20 near noon Monday. Wind diminishing to west 15 Monday evening.

Scattered flurries tonight and Monday.

Waves

Issued 03:00 AM EST 18 January 2026
Today Tonight and Monday. Mainly ice covered.

Extended Forecast

Issued 03:00 AM EST 18 January 2026
Tuesday Wind southwest 15 knots increasing to southwest 20 in the afternoon.
Wednesday Wind light increasing to southwest 20 knots late in the day.
Thursday Wind southwest 20 knots.

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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
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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

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 3:00 AM EST 18 January 2026 Today Tonight and Monday At 3:00 a.m. EST today departing low 1007 mb located over central
Quebec.

At 3:00 a.m. EST today ridge located on a line northeast-southwest
over northwestern Ontario.
By 3:00 a.m. EST Monday ridge located on a line northeast-southwest
over New York State.

At 3:00 a.m. EST today low 1011 mb located over southern Manitoba.
By 3:00 a.m. EST Monday low 999 mb located over Lake Huron.

Great Lakes - Lake Erie and Lake Ontario Area

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Marine Weather for Canada

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