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Eastern Lake Ontario

Warnings

Forecast

Marine Forecast

Issued 10:30 AM EST 10 February 2026

Today Tonight and Wednesday.

Wind southeast 15 knots diminishing to southwest 10 this afternoon then increasing to west 15 this evening. Wind increasing to west 25 early Wednesday morning then veering to northwest 20 Wednesday evening.

Snow changing to scattered flurries this afternoon.

Waves

Issued 10:30 AM EST 10 February 2026
Today Tonight and Wednesday. Over open water waves 0.5 metres or less building to 0.5 to 1 near noon and to 1 to 1.5 Wednesday morning.

Extended Forecast

Issued 03:00 AM EST 10 February 2026
Thursday Wind northwest 15 knots diminishing to light in the afternoon.
Friday Wind light becoming west 15 knots.
Saturday Wind light.

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Map of Great Lakes - Lake Erie and Lake Ontario marine weather areas CFB Trenton Port Colborne - 45142 Hamilton Munro Int'l Airport Oshawa Executive Airport Port Stanley - 45132 Lake Nipissing - 45152 Point Petre Georgian Bay - 45137 Toronto City Centre Airport Lake Simcoe - 45151 South Georgian Bay - 45143 Prince Edward Point - 45135 Peterborough Municipal Airport South Lake Huron - 45149 Collingwood Lake St Clair - 45147 Grimsby - 45139 Goderich Lagoon City Kingston Airport Muskoka Airport Parry Sound Harbour Grenadier Island Lake Simcoe Regional Airport Wiarton Airport Brockville Western Islands Cove Island Great Duck Island North Channel - 45154 Sarnia Chris Hadfield Airport Gore Bay-Manitoulin Airport Tobermory Harrow AAFC Long Point North Bay Airport Port Weller St. Catharines / Niagara District Airport Greater Sudbury Airport Southeast Shoal Vineland Station Port Colborne Erieau Cobourg Sault Ste. Marie Airport Windsor Airport Welland-Pelham Killarney Ajax - 45159 Point Pelee Burlington Lift Bridge
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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 10:30 AM EST 10 February 2026 Today Tonight and Wednesday At 10:30 a.m. EST today departing ridge located on a line
north-south over central Quebec.

At 10:30 a.m. EST today low 1006 mb located over northern Ontario.
By 10:30 a.m. EST Wednesday departing low 1000 mb located south
of Nova Scotia.

At 10:30 a.m. EST today ridge located on a line north-south over
Saskatchewan.
By 10:30 a.m. EST Wednesday ridge located on a line north-south
over the Ontario - Manitoba border.

Great Lakes - Lake Erie and Lake Ontario Area

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Marine Weather for Canada

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