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Lake St. Clair

Warnings

Forecast

Marine Forecast

Issued 06:30 PM EDT 22 May 2026

Tonight and Saturday.

Strong wind warning in effect.

Wind east 20 knots veering to southeast 25 early Saturday morning then diminishing to southwest 15 Saturday evening.

Rain beginning near midnight with a risk of thunderstorms Saturday afternoon and evening changing to scattered showers Saturday evening.

Waves

Issued 06:30 PM EDT 22 May 2026
Tonight and Saturday. Waves 0.5 to 1 metre.

Extended Forecast

Issued 06:30 PM EDT 22 May 2026
Sunday Wind light.
Monday Wind light.
Tuesday Wind light.

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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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land station Land Station
Ice Conditions

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

Ice Forecasts

Issued 12:00 PM EDT 17 May 2026 Forecasts have ended for the season.
Warnings

Warnings (In effect)

Strong wind warning in effect

Lake St. Clair

Issued 6:30 PM EDT 22 May 2026

'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 6:30 PM EDT 22 May 2026 Tonight and Saturday At 6:30 p.m. EDT tonight ridge located on a line north-south over
western Quebec.
By 6:30 p.m. EDT Saturday ridge located on a line
northwest-southeast over Maine.

At 6:30 p.m. EDT tonight low 1008 mb located over southwestern
Kentucky.
By 6:30 p.m. EDT Saturday low 1012 mb located near Lake St. Clair.

Great Lakes - Lake Erie and Lake Ontario Area

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Marine Weather for Canada

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