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Eastern Lake Ontario

Warnings

Forecast

Marine Forecast

Issued 10:30 AM EST 24 January 2026

Today Tonight and Sunday.

Wind northwest 10 knots becoming variable 10 near noon then increasing to southeast 15 near midnight. Wind backing to east 20 early Sunday morning then to northeast 20 Sunday evening.

Scattered flurries beginning this evening changing to snow near noon Sunday. Visibility 1 mile or less in precipitation.

Risk of freezing spray Sunday.

Waves

Issued 10:30 AM EST 24 January 2026
Today Tonight and Sunday. Over open water waves 0.5 metres or less building to 1 late overnight and to 1.5 Sunday morning.

Extended Forecast

Issued 03:00 AM EST 24 January 2026
Monday Wind northeast 20 knots backing to northwest 20 in the afternoon.
Tuesday Wind southwest 30 knots.
Wednesday Wind northwest 20 knots.

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Map of Great Lakes - Lake Huron marine weather areas Cove Island Goderich Oshawa Executive Airport CFB Trenton Western Islands Wiarton Airport Point Petre Lake Simcoe Regional Airport Parry Sound Harbour Toronto City Centre Airport Muskoka Airport Lagoon City Brockville Hamilton Munro Int'l Airport Sarnia Chris Hadfield Airport Tobermory Cobourg Harrow AAFC Long Point Port Weller Burlington Lift Bridge St. Catharines / Niagara District Airport Southeast Shoal Point Pelee Vineland Station Welland-Pelham Erieau Windsor Airport Port Colborne Killarney South Georgian Bay - 45143 Grimsby - 45139 Georgian Bay - 45137 Prince Edward Point - 45135 Port Stanley - 45132 Lake St Clair - 45147 South Lake Huron - 45149 Sault Ste. Marie Airport Lake Simcoe - 45151 Collingwood Greater Sudbury Airport North Bay Airport Kingston Airport Peterborough Municipal Airport Grenadier Island Port Colborne - 45142 Great Duck Island Ajax - 45159 Gore Bay-Manitoulin Airport North Channel - 45154 Lake Nipissing - 45152
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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 24 January 2026 Today Tonight and Sunday At 10:30 a.m. EST today ridge from 1044 mb high located over
Wisconsin to New York State.
By 10:30 a.m. EST Sunday ridge from 1040 mb high located on a line
east-west over northeastern Ontario.

At 10:30 a.m. EST today quasi-stationary low located over Lake
Superior.

By 10:30 a.m. EST Sunday approaching low 1008 mb located over
Kentucky.

Great Lakes - Lake Huron Area

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Marine Weather for Canada

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