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Eastern Lake Ontario

Warnings

Forecast

Marine Forecast

Issued 03:00 AM EST 25 January 2026

Today Tonight and Monday.

Wind east 15 knots increasing to east 20 early this morning and to east 25 near noon. Wind backing to northeast 20 this evening then to north 15 Monday morning. Wind increasing to northwest 25 Monday afternoon.

Flurries changing to snow near noon then to scattered flurries Monday morning. Visibility 1 mile or less in precipitation.

Risk of freezing spray today and tonight. Risk of freezing spray Monday late in the day.

Waves

Issued 03:00 AM EST 25 January 2026
Today Tonight and Monday. Over open water waves 0.5 to 1 metre building to 1.5 this morning then subsiding to 1 Monday morning. Waves building to 1.5 Monday evening.

Extended Forecast

Issued 03:00 AM EST 25 January 2026
Tuesday Wind west 25 knots backing to southwest 30 in the morning.
Wednesday Wind northwest 20 knots.
Thursday Wind northwest 15 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 25 January 2026 Today Tonight and Monday At 3:00 a.m. EST today ridge from 1042 mb high located over Lake
Michigan to Vermont.
By 3:00 a.m. EST Monday ridge from 1040 mb high located on a line
northeast-southwest over Lake Superior.

At 3:00 a.m. EST today dissipating low located over Lake Superior.

At 3:00 a.m. EST today low 1008 mb located near Texas.
By 3:00 a.m. EST Monday low 1004 mb located east of New York State.

Great Lakes - Lake Huron Area

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Marine Weather for Canada

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