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Eastern Lake Ontario

Warnings

Forecast

Marine Forecast

Issued 10:30 AM EDT 13 March 2026

Today Tonight and Saturday.

Gale warning in effect.

Wind southeast 15 knots increasing to southeast 25 this afternoon then veering to southwest 30 this evening. Wind increasing to southwest 35 near midnight then veering to west 40 late overnight. Wind diminishing to west 25 Saturday afternoon and to northwest 15 Saturday evening.

Snow beginning near noon changing to showers or flurries this evening then to flurries overnight and ending Saturday morning. Visibility 1 mile or less in precipitation.

Waves

Issued 10:30 AM EDT 13 March 2026
Today Tonight and Saturday. Over open water waves 0.5 metres or less building to 1 near noon and to 1.5 early this evening. Waves building to 2 to 3 near midnight and to 3 to 5 early Saturday morning then subsiding to 2 to 3 Saturday evening.

Extended Forecast

Issued 03:00 AM EDT 13 March 2026
Sunday Wind light increasing to east 20 knots in the morning and to south 30 late in the day.
Monday Wind south 30 knots increasing to southwest 35 late in the day.
Tuesday Wind southwest 35 knots diminishing to northwest 25 late in the day.

Ice Forecast*

Issued 12:00 PM EDT 13 March 2026 Today Tonight and Saturday 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 13 March 2026 Today Tonight and Saturday

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

Warnings (In effect)

Gale warning in effect

Eastern Lake Ontario

Issued 10:30 AM EDT 13 March 2026

'Gale' force winds of 34 to 47 knots are occurring or expected to occur in this marine area. Watch for updated statements. 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 10:30 AM EDT 13 March 2026 Today Tonight and Saturday At 10:30 a.m. EDT today departing ridge located on a line
north-south over Vermont.

At 10:30 a.m. EDT today low 987 mb located over northern Lake
Michigan.
By 10:30 a.m. EDT Saturday low 1006 mb located near Montréal.

At 10:30 a.m. EDT today ridge located on a line north-south over
North Dakota.
By 10:30 a.m. EDT Saturday ridge located on a line
northwest-southeast over Lower Michigan.

Great Lakes - Lake Huron Area

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Marine Weather for Canada

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