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Eastern Lake Ontario

Warnings

Forecast

Marine Forecast

Issued 10:30 AM EDT 22 March 2025

Today Tonight and Sunday.

Wind southwest 15 knots increasing to west 25 near noon and to west 30 this afternoon. Wind diminishing to northwest 20 this evening and to northwest 15 late overnight. Wind diminishing to light Sunday morning then increasing to east 20 Sunday evening.

Scattered showers ending this afternoon.

Waves

Issued 10:30 AM EDT 22 March 2025
Today Tonight and Sunday. Waves 0.5 to 1 metre building to 1.5 this afternoon and to 2 early this evening. Waves subsiding to 0.5 to 1 near midnight and to 0.5 or less near noon Sunday.

Extended Forecast

Issued 03:00 AM EDT 22 March 2025
Monday Wind east 20 knots veering to south 20 in the morning then to southwest 25 late in the day.
Tuesday Wind southwest 25 knots.
Wednesday Wind east 15 knots becoming northwest 15 late in the day.

Ice Forecast*

Issued 12:00 PM EDT 22 March 2025 Today Tonight and Sunday Open water except 5 tenths medium lake ice including 2 tenths thick lake ice along parts of the shores in the extreme northeastern section.

*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 Port Stanley - 45132 Prince Edward Point - 45135 Georgian Bay - 45137 Grimsby - 45139 Port Colborne - 45142 South Georgian Bay - 45143 Lake St Clair - 45147 South Lake Huron - 45149 Lake Simcoe - 45151 Lake Nipissing - 45152 North Channel - 45154 Ajax - 45159 Sault Ste. Marie Airport Killarney Greater Sudbury Airport North Bay Airport Gore Bay-Manitoulin Airport Great Duck Island Brockville Grenadier Island Kingston Airport Collingwood Lagoon City Muskoka Airport Parry Sound Harbour Lake Simcoe Regional Airport Wiarton Airport Western Islands Cove Island Goderich Sarnia Chris Hadfield Airport Tobermory Harrow AAFC Long Point Port Weller St. Catharines / Niagara District Airport Southeast Shoal Vineland Station Welland-Pelham Windsor Airport Port Colborne Erieau Point Pelee Burlington Lift Bridge Cobourg Hamilton Munro Int'l Airport Oshawa Executive Airport Point Petre Toronto City Centre Airport CFB Trenton Peterborough Municipal Airport
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land station Land Station
Ice Conditions

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

Ice Forecasts

Issued 12:00 PM EDT 22 March 2025 Today Tonight and Sunday

Ice Coverage

Open water except 5 tenths medium lake ice including 2 tenths thick
lake ice along parts of the shores in the extreme northeastern
section.

Warnings

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 10:30 AM EDT 22 March 2025 Today Tonight and Sunday At 10:30 a.m. EDT today cold front located on a line
northeast-southwest over eastern Ontario.
By 10:30 a.m. EDT Sunday departing cold front located on a line
northeast-southwest over the Gulf of St. Lawrence.

At 10:30 a.m. EDT today ridge located on a line north-south over
western Lake Superior.
By 10:30 a.m. EDT Sunday ridge located on a line north-south over
Lake Ontario.

Great Lakes - Lake Huron Area

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Marine Weather for Canada

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