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Eastern Lake Ontario

Warnings

Forecast

Marine Forecast

Issued 06:30 PM EDT 12 March 2026

Tonight and Friday.

Wind northwest 20 knots backing to west 15 near midnight then diminishing to light late overnight. Wind increasing to southeast 15 Friday morning and to southeast 25 Friday afternoon. Wind veering to southwest 30 Friday evening.

Snow Friday afternoon changing to showers or flurries. Visibility 1 mile or less in snow.

Waves

Issued 06:30 PM EDT 12 March 2026
Tonight and Friday. Over open water waves 1 metre subsiding to 0.5 or less late overnight then building to 1 near noon Friday. Waves building to 2 to 3 Friday evening.

Extended Forecast

Issued 06:30 PM EDT 12 March 2026
Saturday Wind west 40 knots diminishing to west 15 late in the day.
Sunday Wind light increasing to south 30 knots late in the day.
Monday Wind south 30 knots increasing to southwest 35 late in the day.

Ice Forecast*

Issued 12:00 PM EDT 12 March 2026 Today Tonight and Friday Open water except 2 tenths thick lake ice in the extreme northeastern section. Consolidated rotten 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 Huron marine weather areas Wiarton Airport Western Islands Cove Island Goderich Lake Simcoe Regional Airport Vineland Station Parry Sound Harbour Sarnia Chris Hadfield Airport Tobermory Muskoka Airport Harrow AAFC Long Point Port Weller St. Catharines / Niagara District Airport Lagoon City Southeast Shoal Burlington Lift Bridge Welland-Pelham Windsor Airport Port Colborne Erieau Peterborough Municipal Airport CFB Trenton Toronto City Centre Airport Point Petre Oshawa Executive Airport Hamilton Munro Int'l Airport Point Pelee Cobourg Port Colborne - 45142 North Channel - 45154 Ajax - 45159 Lake Nipissing - 45152 Sault Ste. Marie Airport Killarney Lake Simcoe - 45151 Greater Sudbury Airport South Lake Huron - 45149 Lake St Clair - 45147 North Bay Airport South Georgian Bay - 45143 Gore Bay-Manitoulin Airport Grimsby - 45139 Georgian Bay - 45137 Great Duck Island Collingwood Kingston Airport Grenadier Island Brockville Prince Edward Point - 45135 Port Stanley - 45132
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Ice Conditions

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

Ice Forecasts

Issued 12:00 PM EDT 12 March 2026 Today Tonight and Friday

Ice Coverage

Open water except 2 tenths thick lake ice in the extreme
northeastern section. Consolidated rotten 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 6:30 PM EDT 12 March 2026 Tonight and Friday At 6:30 p.m. EDT tonight ridge located on a line north-south over
Whitefish Bay.
By 6:30 p.m. EDT Friday departing ridge located on a line
north-south over Maine.

At 6:30 p.m. EDT tonight low 990 mb located over North Dakota.
By 6:30 p.m. EDT Friday low 993 mb located over Lake Huron.

Great Lakes - Lake Huron Area

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Marine Weather for Canada

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