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Eastern Lake Ontario

Warnings

Forecast

Marine Forecast

Issued 03:00 AM EST 13 February 2026

Today Tonight and Saturday.

Wind northwest 10 knots increasing to west 15 this morning then backing to southwest 20 this afternoon. Wind increasing to southwest 25 early this evening then diminishing to west 15 overnight. Wind veering to northwest 15 Saturday morning then backing to west 15 near noon Saturday. Wind diminishing to light Saturday evening.

Snow this evening. Scattered flurries overnight with a risk of freezing drizzle.

Waves

Issued 03:00 AM EST 13 February 2026
Today Tonight and Saturday. Over open water waves 0.5 metres building to 1 near noon and to 1 to 1.5 early this evening. Waves subsiding to 0.5 to 1 Saturday morning and to 0.5 Saturday evening.

Extended Forecast

Issued 03:00 AM EST 13 February 2026
Sunday Wind light becoming east 15 knots in the morning.
Monday Wind southwest 15 knots.
Tuesday Wind west 15 knots diminishing to 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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land station Land Station
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 13 February 2026 Today Tonight and Saturday At 3:00 a.m. EST today ridge located on a line northeast-southwest
over southern Ontario.
By 3:00 a.m. EST Saturday ridge located on a line
northeast-southwest over the East Coast of the U.S.

At 3:00 a.m. EST today low 1010 mb located over northwestern
Ontario.
By 3:00 a.m. EST Saturday low 1010 mb located over central Quebec.

At 3:00 a.m. EST today ridge located on a line northeast-southwest
over Manitoba.
By 3:00 a.m. EST Saturday ridge located on a line
northeast-southwest over northeastern Ontario.

Great Lakes - Lake Erie and Lake Ontario Area

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Marine Weather for Canada

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