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Lake St. Clair

Warnings

Forecast

Marine Forecast

Issued 06:30 PM EDT 15 April 2026

Tonight and Thursday.

Wind southwest 10 knots increasing to southwest 15 near noon Thursday then diminishing to variable 10 Thursday evening.

Showers and fog patches with a risk of thunderstorms.

Waves

Issued 06:30 PM EDT 15 April 2026
Tonight and Thursday. Waves 0.5 metres.

Extended Forecast

Issued 06:30 PM EDT 15 April 2026
Friday Wind light.
Saturday Wind south 15 knots increasing to west 25 late in the day.
Sunday Wind northwest 20 knots.

Ice Forecast*

Issued 12:00 PM EDT 15 April 2026 Today Tonight and Thursday Ice free.

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

 

[ Canadian Ice Service ]

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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 15 April 2026 Today Tonight and Thursday

Ice Coverage

Ice free.

Warnings

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 6:30 PM EDT 15 April 2026 Tonight and Thursday At 6:30 p.m. EDT tonight trough located on a line
northeast-southwest over Lower Michigan.
By 6:30 p.m. EDT Thursday low 1004 mb located over Lake Simcoe.

At 6:30 p.m. EDT tonight low 999 mb located over Lake Winnipeg.
By 6:30 p.m. EDT Thursday low 1007 mb located over northern Quebec.

By 6:30 p.m. EDT Thursday approaching trough located on a line
northeast-southwest over northwestern Ontario.

Great Lakes - Lake Erie and Lake Ontario Area

Another Region

Marine Weather for Canada

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