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Eastern Lake Ontario

Warnings

Forecast

Marine Forecast

Issued 03:00 AM EST 13 January 2026

Today Tonight and Wednesday.

Wind southwest 20 knots backing to south 15 this morning then increasing to south 20 this afternoon. Wind veering to southwest 25 this evening then diminishing to southwest 15 near noon Wednesday. Wind veering to northwest 15 Wednesday evening.

Scattered showers this afternoon tonight and Wednesday morning. Scattered flurries Wednesday evening.

Waves

Issued 03:00 AM EST 13 January 2026
Today Tonight and Wednesday. Waves 1.5 metres subsiding to 1 near noon then building to 2 near midnight. Waves subsiding to 1.5 Wednesday morning and to 1 Wednesday afternoon.

Extended Forecast

Issued 03:00 AM EST 13 January 2026
Thursday Wind northwest 20 knots.
Friday Wind light increasing to southwest 20 knots.
Saturday Wind southwest 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 3:00 AM EST 13 January 2026 Today Tonight and Wednesday At 3:00 a.m. EST today departing ridge located over the Ontario -
Quebec border.

At 3:00 a.m. EST today low 991 mb located over the Ontario -
Manitoba border.
By 3:00 a.m. EST Wednesday low 989 mb located over western Quebec.

By 3:00 a.m. EST Wednesday ridge located on a line north-south
over Manitoba.

Great Lakes - Lake Huron Area

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Marine Weather for Canada

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