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Eastern Lake Ontario

Warnings

Forecast

Marine Forecast

Issued 10:30 AM EDT 16 March 2026

Today Tonight and Tuesday.

Gale warning in effect.

Wind southeast 25 knots veering to southwest 30 this afternoon then increasing to southwest 35 near midnight. Wind diminishing to west 30 near noon Tuesday and to west 20 Tuesday evening.

Showers beginning near noon with a risk of thunderstorms changing to snow this evening then to scattered flurries Tuesday morning. Visibility 1 mile or less in precipitation.

Freezing spray warning in effect.

Over open water freezing spray Tuesday. Risk of freezing spray late Tuesday evening.

Waves

Issued 10:30 AM EDT 16 March 2026
Today Tonight and Tuesday. Over open water waves 1.5 metres building to 2 early this evening and to 3 late overnight. Waves subsiding to 2 Tuesday afternoon and to 1.5 Tuesday evening.

Extended Forecast

Issued 03:00 AM EDT 16 March 2026
Wednesday Wind northwest 20 knots diminishing to light in the morning then becoming southwest 15 in the afternoon.
Thursday Wind southwest 20 knots diminishing to light.
Friday Wind light.

Ice Forecast*

Issued 12:00 PM EDT 15 March 2026 Today Tonight and Monday Open water except 1 tenth 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 15 March 2026 Today Tonight and Monday

Ice Coverage

Open water except 1 tenth 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 16 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.

Freezing spray warning in effect

Eastern Lake Ontario

Issued 10:30 AM EDT 16 March 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.

Synopsis

Technical Marine Synopsis

Issued 10:30 AM EDT 16 March 2026 Today Tonight and Tuesday At 10:30 a.m. EDT today low 986 mb located over central Lake Huron.
By 10:30 a.m. EDT Tuesday departing low 960 mb located over
central Quebec.

By 10:30 a.m. EDT Tuesday ridge located on a line north-south over
northwestern Ontario.

Great Lakes - Lake Huron Area

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Marine Weather for Canada

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