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Lake St. Clair

Warnings

Forecast

Marine Forecast

Issued 10:30 AM EDT 14 March 2026

Today Tonight and Sunday.

Wind northwest 15 knots diminishing to light near noon then increasing to east 15 this evening. Wind increasing to east 20 late overnight then veering to south 20 Sunday afternoon. Wind increasing to south 25 Sunday evening.

Snow overnight and Sunday morning. Risk of freezing rain Sunday morning and afternoon. Visibility 1 mile or less in snow.

Waves

Issued 10:30 AM EDT 14 March 2026
Today Tonight and Sunday. Waves less than 0.5 metres building to 0.5 or less early Sunday morning.

Extended Forecast

Issued 03:00 AM EDT 14 March 2026
Monday Wind south 25 knots increasing to southwest 35 in the afternoon.
Tuesday Wind northwest 25 knots diminishing to west 15.
Wednesday Wind light becoming south 15 knots.

Ice Forecast*

Issued 12:00 PM EDT 13 March 2026 Today Tonight and Saturday 1 tenth thick lake ice.

*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 13 March 2026 Today Tonight and Saturday

Ice Coverage

1 tenth thick lake ice.

Warnings

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 10:30 AM EDT 14 March 2026 Today Tonight and Sunday At 10:30 a.m. EDT today departing low 1003 mb located over New
England.

At 10:30 a.m. EDT today ridge located on a line north-south over
Lake Superior.
By 10:30 a.m. EDT Sunday ridge located over Quebec.

By 10:30 a.m. EDT Sunday approaching warm front located from North
Dakota to Lake St. Clair.

Great Lakes - Lake Erie and Lake Ontario Area

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Marine Weather for Canada

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