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Lake St. Clair

Warnings

Forecast

Marine Forecast

Issued 10:30 AM EST 18 February 2026

Today Tonight and Thursday.

Wind southeast 15 knots diminishing to east 10 this afternoon then increasing to east 15 early Thursday morning.

Showers ending this afternoon with a risk of thunderstorms. Scattered showers Thursday afternoon and evening. Fog patches forming this afternoon and dissipating near noon Thursday.

Waves

Issued 10:30 AM EST 18 February 2026
Today Tonight and Thursday. Mainly ice covered.

Extended Forecast

Issued 03:00 AM EST 18 February 2026
Friday Wind east 20 knots becoming southwest 20 in the afternoon.
Saturday Wind southwest 15 knots diminishing to light late in the day.
Sunday Wind light increasing to north 20 knots late in the day.

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Map of Great Lakes - Lake Erie and Lake Ontario marine weather areas CFB Trenton Port Colborne - 45142 Hamilton Munro Int'l Airport Oshawa Executive Airport Port Stanley - 45132 Lake Nipissing - 45152 Point Petre Georgian Bay - 45137 Toronto City Centre Airport Lake Simcoe - 45151 South Georgian Bay - 45143 Prince Edward Point - 45135 Peterborough Municipal Airport South Lake Huron - 45149 Collingwood Lake St Clair - 45147 Grimsby - 45139 Goderich Lagoon City Kingston Airport Muskoka Airport Parry Sound Harbour Grenadier Island Lake Simcoe Regional Airport Wiarton Airport Brockville Western Islands Cove Island Great Duck Island North Channel - 45154 Sarnia Chris Hadfield Airport Gore Bay-Manitoulin Airport Tobermory Harrow AAFC Long Point North Bay Airport Port Weller St. Catharines / Niagara District Airport Greater Sudbury Airport Southeast Shoal Vineland Station Port Colborne Erieau Cobourg Sault Ste. Marie Airport Windsor Airport Welland-Pelham Killarney Ajax - 45159 Point Pelee Burlington Lift Bridge
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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 10:30 AM EST 18 February 2026 Today Tonight and Thursday At 10:30 a.m. EST today ridge located on a line northwest-southeast
over Montréal.
By 10:30 a.m. EST Thursday ridge located on a line
northwest-southeast over Maine.

At 10:30 a.m. EST today low 987 mb located over western Minnesota.
By 10:30 a.m. EST Thursday low 1005 mb located over northern
Wisconsin.

Great Lakes - Lake Erie and Lake Ontario Area

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Marine Weather for Canada

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