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Western Lake Ontario

Warnings

Forecast

Marine Forecast

Issued 06:30 PM EDT 27 March 2025

Tonight and Friday.

Wind southwest 20 knots veering to northwest 15 near midnight then diminishing to light late overnight. Wind increasing to east 15 near noon Friday and to east 20 Friday evening.

Rain Friday late in the day. Risk of freezing rain late Friday evening.

Waves

Issued 06:30 PM EDT 27 March 2025
Tonight and Friday. Waves 1 to 1.5 metres.

Extended Forecast

Issued 06:30 PM EDT 27 March 2025
Saturday Wind northeast 15 knots increasing to northeast 20 in the afternoon.
Sunday Wind northeast 20 knots.
Monday Wind south 15 knots increasing to west 25 late in the day.

Ice Forecast*

Issued 12:00 PM EDT 27 March 2025 Today Tonight and Friday Open water.

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

 

[ Canadian Ice Service ]

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Map of Great Lakes - Lake Erie and Lake Ontario 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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buoy Buoy
land station Land Station
Ice Conditions

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

Ice Forecasts

Issued 12:00 PM EDT 27 March 2025 Today Tonight and Friday

Ice Coverage

Open water.

Warnings

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 6:30 PM EDT 27 March 2025 Tonight and Friday At 6:30 p.m. EDT tonight cold front located on a line
northeast-southwest over Lake Nipissing.
By 6:30 p.m. EDT Friday departing cold front located on a line
northeast-southwest over the Maritimes.

At 6:30 p.m. EDT tonight ridge located on a line northwest-southeast
over northwestern Ontario.
By 6:30 p.m. EDT Friday ridge located on a line northwest-southeast
over central James Bay.

By 6:30 p.m. EDT Friday approaching low 996 mb located over
southern Minnesota.

Great Lakes - Lake Erie and Lake Ontario Area

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Marine Weather for Canada

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