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Eastern Lake Ontario

Warnings

Forecast

Marine Forecast

Issued 10:30 AM EDT 24 April 2026

Today Tonight and Saturday.

Wind northeast 15 knots diminishing to variable 10 near noon then increasing to east 15 this evening. Wind increasing to east 20 late overnight then diminishing to east 10 Saturday afternoon. Wind becoming light Saturday evening.

Scattered showers Saturday.

Waves

Issued 10:30 AM EDT 24 April 2026
Today Tonight and Saturday. Waves 0.5 to 1 metre subsiding to 0.5 or less this afternoon then building to 0.5 to 1 near midnight. Waves building to 1 to 1.5 early Saturday morning then subsiding to 0.5 or less Saturday evening.

Extended Forecast

Issued 03:00 AM EDT 24 April 2026
Sunday Wind light.
Monday Wind light.
Tuesday Wind southeast 15 knots increasing to southeast 20.

Ice Forecast*

Issued 12:00 PM EDT 23 April 2026 Today Tonight and Friday 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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land station Land Station
Ice Conditions

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

Ice Forecasts

Issued 12:00 PM EDT 23 April 2026 Today Tonight and Friday

Ice Coverage

Ice free.

Warnings

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 10:30 AM EDT 24 April 2026 Today Tonight and Saturday At 10:30 a.m. EDT today ridge located on a line north-south over
Kingston.
By 10:30 a.m. EDT Saturday ridge located on a line north-south
over New Hampshire.

At 10:30 a.m. EDT today low 995 mb located over western Manitoba.
By 10:30 a.m. EDT Saturday low 1012 mb located over southern
Saskatchewan.

Great Lakes - Lake Erie and Lake Ontario Area

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Marine Weather for Canada

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