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Eastern Lake Ontario

Warnings

Forecast

Marine Forecast

Issued 03:00 AM EDT 28 March 2025

Today Tonight and Saturday.

Wind northwest 15 knots diminishing to light early this morning then becoming east 15 this afternoon. Wind backing to northeast 15 Saturday morning then increasing to northeast 20 near noon Saturday.

Rain or freezing rain tonight and Saturday.

Waves

Issued 03:00 AM EDT 28 March 2025
Today Tonight and Saturday. Waves 0.5 to 1 metre subsiding to 0.5 or less this morning then building to 0.5 to 1 early this evening. Waves building to 1 to 1.5 near noon Saturday.

Extended Forecast

Issued 03:00 AM EDT 28 March 2025
Sunday Wind northeast 20 knots.
Monday Wind south 15 knots increasing to west 25 late in the day.
Tuesday Wind west 25 knots diminishing to north 15 late in the day.

Ice Forecast*

Issued 12:00 PM EDT 27 March 2025 Today Tonight and Friday Open water except 2 tenths thick lake ice near parts of the shores in the extreme northeastern section.

*Ice Forecast and Warnings also apply to U.S. waters

 

[ Canadian Ice Service ]

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Map of Great Lakes - Lake Erie and Lake Ontario marine weather areas Port Stanley - 45132 Prince Edward Point - 45135 Georgian Bay - 45137 Grimsby - 45139 Port Colborne - 45142 South Georgian Bay - 45143 Lake St Clair - 45147 South Lake Huron - 45149 Lake Simcoe - 45151 Lake Nipissing - 45152 North Channel - 45154 Ajax - 45159 Sault Ste. Marie Airport Killarney Greater Sudbury Airport North Bay Airport Gore Bay-Manitoulin Airport Great Duck Island Brockville Grenadier Island Kingston Airport Collingwood Lagoon City Muskoka Airport Parry Sound Harbour Lake Simcoe Regional Airport Wiarton Airport Western Islands Cove Island Goderich Sarnia Chris Hadfield Airport Tobermory Harrow AAFC Long Point Port Weller St. Catharines / Niagara District Airport Southeast Shoal Vineland Station Welland-Pelham Windsor Airport Port Colborne Erieau Point Pelee Burlington Lift Bridge Cobourg Hamilton Munro Int'l Airport Oshawa Executive Airport Point Petre Toronto City Centre Airport CFB Trenton Peterborough Municipal Airport
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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 27 March 2025 Today Tonight and Friday

Ice Coverage

Open water except 2 tenths thick lake ice near parts of the shores
in the extreme northeastern section.

Warnings

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 3:00 AM EDT 28 March 2025 Today Tonight and Saturday At 3:00 a.m. EDT today trough located on a line east-west over
northwestern Ontario.
By 3:00 a.m. EDT Saturday trough located on a line east-west over
Georgian Bay.

At 3:00 a.m. EDT today ridge located on a line north-south over
Georgian Bay.
By 3:00 a.m. EDT Saturday quasi-stationary high located over
southern Quebec.

Great Lakes - Lake Erie and Lake Ontario Area

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Marine Weather for Canada

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