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Eastern Lake Ontario

Warnings

Forecast

Marine Forecast

Issued 10:30 AM EDT 10 March 2026

Today Tonight and Wednesday.

Wind variable 10 knots increasing to northeast 15 early this evening and to northeast 20 late this evening. Wind diminishing to northeast 15 near noon Wednesday then increasing to southwest 25 Wednesday evening.

Scattered showers this afternoon tonight and Wednesday with a risk of thunderstorms.

Waves

Issued 10:30 AM EDT 10 March 2026
Today Tonight and Wednesday. Over open water waves 0.5 metres or less building to 0.5 to 1 this evening and to 1 to 1.5 Wednesday evening.

Extended Forecast

Issued 03:00 AM EDT 10 March 2026
Thursday Wind west 30 knots diminishing to northwest 15 late in the day.
Friday Wind southeast 20 knots veering to south 25.
Saturday Wind west 35 knots diminishing to light late in the day.

Ice Forecast*

Issued 12:00 PM EDT 10 March 2026 Today Tonight and Wednesday Open water except 2 tenths thick lake ice in the northeastern section. Consolidated thick lake ice along parts of the shore and in the Bay of Quinte.

*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 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 10 March 2026 Today Tonight and Wednesday

Ice Coverage

Open water except 2 tenths thick lake ice in the northeastern
section. Consolidated thick lake ice along parts of the shore and in
the Bay of Quinte.

Warnings

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 10:30 AM EDT 10 March 2026 Today Tonight and Wednesday By 10:30 a.m. EDT Wednesday approaching low 998 mb located over
Indiana.

At 10:30 a.m. EDT today high 1030 mb located over northern Ontario.
By 10:30 a.m. EDT Wednesday high 1034 mb located east of James Bay.

Great Lakes - Lake Erie and Lake Ontario Area

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Marine Weather for Canada

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