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Western Lake Ontario

Warnings

Forecast

Marine Forecast

Issued 06:30 PM EST 23 January 2026

Tonight and Saturday.

Wind northwest 25 knots diminishing to north 15 late overnight and to north 10 early Saturday morning. Wind becoming variable 10 near noon Saturday.

Scattered flurries. Visibility 1 mile or less in flurries.

Freezing spray warning in effect.

Freezing spray ending near midnight.

Waves

Issued 06:30 PM EST 23 January 2026
Tonight and Saturday. Waves 2 metres subsiding to 1 near midnight and to 0.5 or less Saturday morning.

Extended Forecast

Issued 06:30 PM EST 23 January 2026
Sunday Wind southeast 15 knots increasing to southeast 25 in the morning.
Monday Wind northeast 20 knots backing to northwest 20.
Tuesday Wind southwest 30 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
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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

Western Lake Ontario

Issued 6:30 PM EST 23 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.

Warnings (Ended)

Gale warning ended

Western Lake Ontario

Issued 6:30 PM EST 23 January 2026
Synopsis

Technical Marine Synopsis

Issued 6:30 PM EST 23 January 2026 Tonight and Saturday At 6:30 p.m. EST tonight high 1047 mb located over western
Minnesota.
By 6:30 p.m. EST Saturday high 1036 mb located over Wisconsin.

At 6:30 p.m. EST tonight departing trough located on a line
east-west over southern Ontario.

Great Lakes - Lake Erie and Lake Ontario Area

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Marine Weather for Canada

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