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Eastern Lake Ontario

Warnings

Forecast

Marine Forecast

Issued 03:00 AM EST 17 February 2026

Today Tonight and Wednesday.

Wind southwest 10 knots veering to west 10 early this morning then backing to southwest 10 near noon. Wind becoming light near midnight then increasing to northeast 15 Wednesday morning. Wind increasing to northeast 20 near noon Wednesday.

Scattered showers ending early this morning. Freezing rain or snow Wednesday morning and afternoon changing to snow. Visibility 1 mile or less in snow.

Waves

Issued 03:00 AM EST 17 February 2026
Today Tonight and Wednesday. Over open water waves 0.5 metres or less building to 0.5 to 1 Wednesday morning.

Extended Forecast

Issued 03:00 AM EST 17 February 2026
Thursday Wind northeast 20 knots.
Friday Wind east 25 knots veering to south 20 late in the day.
Saturday Wind southwest 15 knots.

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Map of Great Lakes - Lake Huron marine weather areas Wiarton Airport Western Islands Cove Island Goderich Lake Simcoe Regional Airport Vineland Station Parry Sound Harbour Sarnia Chris Hadfield Airport Tobermory Muskoka Airport Harrow AAFC Long Point Port Weller St. Catharines / Niagara District Airport Lagoon City Southeast Shoal Burlington Lift Bridge Welland-Pelham Windsor Airport Port Colborne Erieau Peterborough Municipal Airport CFB Trenton Toronto City Centre Airport Point Petre Oshawa Executive Airport Hamilton Munro Int'l Airport Point Pelee Cobourg Port Colborne - 45142 North Channel - 45154 Ajax - 45159 Lake Nipissing - 45152 Sault Ste. Marie Airport Killarney Lake Simcoe - 45151 Greater Sudbury Airport South Lake Huron - 45149 Lake St Clair - 45147 North Bay Airport South Georgian Bay - 45143 Gore Bay-Manitoulin Airport Grimsby - 45139 Georgian Bay - 45137 Great Duck Island Collingwood Kingston Airport Grenadier Island Brockville Prince Edward Point - 45135 Port Stanley - 45132
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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 17 February 2026 Today Tonight and Wednesday At 3:00 a.m. EST today departing trough located on a line
northeast-southwest over eastern Ontario.

At 3:00 a.m. EST today ridge located over northwestern Ontario.
By 3:00 a.m. EST Wednesday ridge located on a line
northwest-southeast over northern Ontario.

By 3:00 a.m. EST Wednesday approaching low 984 mb located over
Minnesota.

Great Lakes - Lake Huron Area

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Marine Weather for Canada

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