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Eastern Lake Ontario

Warnings

Forecast

Marine Forecast

Issued 10:30 AM EST 07 February 2026

Today Tonight and Sunday.

Wind northwest 25 knots diminishing to north 15 near midnight then backing to northwest 15 near noon Sunday.

Scattered flurries ending near midnight.

Freezing spray warning in effect.

Freezing spray ending near noon. Risk of freezing spray this afternoon and early this evening.

Waves

Issued 10:30 AM EST 07 February 2026
Today Tonight and Sunday. Over open water waves 2 metres subsiding to 1 to 1.5 near noon and to 0.5 to 1 this evening. Waves subsiding to 0.5 or less Sunday afternoon.

Extended Forecast

Issued 03:00 AM EST 07 February 2026
Monday Wind light.
Tuesday Wind south 15 knots veering to west 15 late in the day.
Wednesday Wind northwest 15 knots increasing to northwest 20.

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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

Warnings (In effect)

Freezing spray warning in effect

Eastern Lake Ontario

Issued 10:30 AM EST 07 February 2026

Moderate or severe freezing spray is occurring or expected to occur in this marine area. Please refer to the latest marine forecasts for further details and continue to monitor the situation through Canadian Coast Guard radio or Weatheradio stations.

Synopsis

Technical Marine Synopsis

Issued 10:30 AM EST 7 February 2026 Today Tonight and Sunday At 10:30 a.m. EST today ridge located on a line north-south over
northwestern Ontario.
By 10:30 a.m. EST Sunday ridge located on a line north-south over
northeastern Ontario.

Great Lakes - Lake Erie and Lake Ontario Area

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Marine Weather for Canada

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