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Western Lake Ontario

Warnings

Forecast

Marine Forecast

Issued 03:00 AM EST 24 January 2026

Today Tonight and Sunday.

Wind northwest 15 knots diminishing to northwest 10 early this morning then backing to west 10 near noon. Wind becoming variable 10 early this evening then increasing to southeast 15 overnight. Wind increasing to southeast 25 Sunday morning then backing to east 25 near noon Sunday. Wind backing to northeast 20 Sunday evening.

Scattered flurries changing to snow near noon Sunday. Visibility 1 mile or less in precipitation.

Freezing spray warning in effect.

Freezing spray beginning near noon Sunday.

Waves

Issued 03:00 AM EST 24 January 2026
Today Tonight and Sunday. Waves 0.5 to 1 metre subsiding to 0.5 or less this morning then building to 1 to 1.5 Sunday morning. Waves building to 2 near noon Sunday.

Extended Forecast

Issued 03:00 AM EST 24 January 2026
Monday Wind northeast 20 knots backing to northwest 20 in the afternoon.
Tuesday Wind southwest 30 knots.
Wednesday Wind northwest 20 knots.

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

Warnings (In effect)

Freezing spray warning in effect

Western Lake Ontario

Issued 03:00 AM EST 24 January 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 3:00 AM EST 24 January 2026 Today Tonight and Sunday At 3:00 a.m. EST today ridge located from Minnesota to Pennsylvania.
By 3:00 a.m. EST Sunday ridge located from Wisconsin to New
York State.

At 3:00 a.m. EST today quasi-stationary low located over Lake
Superior.

Great Lakes - Lake Erie and Lake Ontario Area

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Marine Weather for Canada

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