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Eastern Lake Ontario

Warnings

Forecast

Marine Forecast

Issued 06:30 PM EST 14 January 2026

Tonight and Thursday.

Wind north 15 knots increasing to north 25 near midnight then diminishing to northwest 15 near noon Thursday. Wind increasing to northwest 20 Thursday evening.

Scattered showers changing to rain or snow this evening then to snow near midnight. Scattered flurries Thursday afternoon and evening. Visibility 1 mile or less in snow.

Risk of freezing spray Thursday morning and afternoon. Risk of freezing spray Thursday evening.

Waves

Issued 06:30 PM EST 14 January 2026
Tonight and Thursday. Waves 0.5 to 1 metre building to 1 to 1.5 late overnight then subsiding to 0.5 to 1 Thursday afternoon. Waves building to 1 to 1.5 Thursday evening.

Extended Forecast

Issued 06:30 PM EST 14 January 2026
Friday Wind northwest 20 knots diminishing to south 15 in the afternoon then veering to southwest 20 late in the day.
Saturday Wind southwest 20 knots.
Sunday Wind southwest 25 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 6:30 PM EST 14 January 2026 Tonight and Thursday At 6:30 p.m. EST tonight trough located on a line
northeast-southwest over southern Ontario.
By 6:30 p.m. EST Thursday trough located on a line
northeast-southwest over New Brunswick.

At 6:30 p.m. EST tonight ridge located on a line northeast-southwest
over the Ontario - Minnesota border.
By 6:30 p.m. EST Thursday ridge located on a line
northeast-southwest over Lake Michigan.

At 6:30 p.m. EST tonight warm front located over northwestern
Manitoba.
By 6:30 p.m. EST Thursday warm front located over northwestern
Ontario.

Great Lakes - Lake Huron Area

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Marine Weather for Canada

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