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Eastern Lake Ontario

Warnings

Forecast

Marine Forecast

Issued 10:30 AM EDT 25 April 2025

Today Tonight and Saturday.

Wind northeast 20 knots diminishing to northeast 15 near noon and to east 10 this evening. Wind becoming variable 10 early Saturday morning then increasing to west 15 late Saturday morning. Wind increasing to west 30 near noon Saturday then veering to northwest 25 Saturday evening.

Showers. Risk of thunderstorms today and Saturday. Fog patches forming near midnight and dissipating near noon Saturday.

Waves

Issued 10:30 AM EDT 25 April 2025
Today Tonight and Saturday. Waves 1 metre building to 2 to 3 near noon Saturday.

Extended Forecast

Issued 03:00 AM EDT 25 April 2025
Sunday Wind northwest 15 knots diminishing to light in the afternoon.
Monday Wind light.
Tuesday Wind light becoming southwest 15 knots.

Ice Forecast*

Issued 12:00 PM EDT 24 April 2025 Today Tonight and Friday Ice free.

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

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

Ice Forecasts

Issued 12:00 PM EDT 24 April 2025 Today Tonight and Friday

Ice Coverage

Ice free.

Warnings

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 6:30 PM EDT 24 April 2025 Tonight and Friday At 6:30 p.m. EDT tonight departing low 1020 mb located over
eastern Ontario.

At 6:30 p.m. EDT tonight quasi-stationary ridge located on a line
northeast-southwest over northern Ontario.

By 6:30 p.m. EDT Friday approaching low 1015 mb located near Lake
St. Clair.

Great Lakes - Lake Huron Area

Another Region

Marine Weather for Canada

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