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Western Lake Ontario

Warnings

Forecast

Marine Forecast

Issued 10:30 AM EDT 17 March 2026

Today Tonight and Wednesday.

Wind west 25 knots diminishing to west 15 near midnight and to southwest 10 early Wednesday morning. Wind increasing to south 15 near noon Wednesday.

Scattered flurries ending this evening. Scattered flurries Wednesday evening with a risk of freezing drizzle.

Freezing spray warning in effect.

Over open water freezing spray ending this evening.

Waves

Issued 10:30 AM EDT 17 March 2026
Today Tonight and Wednesday. Waves 2 metres subsiding to 1 to 1.5 early this evening and to 1 late overnight. Waves subsiding to 0.5 early Wednesday morning then building to 0.5 to 1 Wednesday afternoon.

Extended Forecast

Issued 03:00 AM EDT 17 March 2026
Thursday Wind southwest 15 knots diminishing to light in the afternoon.
Friday Wind light.
Saturday Wind east 10 to 15 knots becoming light.

Ice Forecast*

Issued 12:00 PM EDT 16 March 2026 Today Tonight and Tuesday Open water.

*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 16 March 2026 Today Tonight and Tuesday

Ice Coverage

Open water.

Warnings

Warnings (In effect)

Freezing spray warning in effect

Western Lake Ontario

Issued 10:30 AM EDT 17 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.

Warnings (Ended)

Gale warning ended

Western Lake Ontario

Issued 10:30 AM EDT 17 March 2026
Synopsis

Technical Marine Synopsis

Issued 10:30 AM EDT 17 March 2026 Today Tonight and Wednesday At 10:30 a.m. EDT today departing low 959 mb located over northern
Quebec.

At 10:30 a.m. EDT today ridge located on a line north-south over
northwestern Ontario.
By 10:30 a.m. EDT Wednesday ridge located on a line north-south
over eastern Ontario.

By 10:30 a.m. EDT Wednesday approaching low 1003 mb located over
southern Manitoba.

Great Lakes - Lake Huron Area

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Marine Weather for Canada

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