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Western Lake Ontario

Warnings

Forecast

Marine Forecast

Issued 04:31 AM EST 14 January 2026

Today Tonight and Thursday.

Wind southwest 20 knots diminishing to southwest 15 this morning and to variable 10 this afternoon. Wind increasing to north 15 early this evening and to north 20 late this evening. Wind backing to northwest 20 Thursday morning.

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

Waves

Issued 04:30 AM EST 14 January 2026
Today Tonight and Thursday. Waves 2 metres subsiding to 1.5 early this morning and to 1 near noon.

Extended Forecast

Issued 03:00 AM EST 14 January 2026
Friday Wind light increasing to southwest 20 knots in the morning.
Saturday Wind southwest 25 knots diminishing to southwest 15 late in the day.
Sunday Wind southwest 25 knots diminishing to southwest 15 late in the day.

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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 14 January 2026 Today Tonight and Thursday At 3:00 a.m. EST today low 986 mb located over western Quebec.
By 3:00 a.m. EST Thursday low 997 mb located over eastern Quebec.

At 3:00 a.m. EST today cold front located on a line
northeast-southwest over northeastern Ontario.
By 3:00 a.m. EST Thursday cold front located on a line
northeast-southwest over New York State.

At 3:00 a.m. EST today ridge located on a line north-south over
Manitoba.
By 3:00 a.m. EST Thursday ridge located on a line
northeast-southwest over western Lake Superior.

Great Lakes - Lake Huron Area

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Marine Weather for Canada

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