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Eastern Lake Ontario

Warnings

Forecast

Marine Forecast

Issued 10:30 AM EDT 28 April 2025

Today Tonight and Tuesday.

Wind variable 10 knots becoming east 10 this afternoon then increasing to southeast 15 this evening. Wind veering to south 20 late overnight then to southwest 25 Tuesday afternoon.

Scattered showers Tuesday afternoon and evening with a risk of thunderstorms.

Waves

Issued 10:30 AM EDT 28 April 2025
Today Tonight and Tuesday. Waves 0.5 metres or less building to 1 to 1.5 early Tuesday morning and to 2 Tuesday evening.

Extended Forecast

Issued 03:00 AM EDT 28 April 2025
Wednesday Wind west 20 knots diminishing to light in the afternoon.
Thursday Wind light becoming east 15 knots.
Friday Wind south 15 knots increasing to southwest 25.

Ice Forecast*

Issued 12:00 PM EDT 28 April 2025 Today Tonight and Tuesday 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 28 April 2025 Today Tonight and Tuesday

Ice Coverage

Ice free.

Warnings

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 10:30 AM EDT 28 April 2025 Today Tonight and Tuesday At 10:30 a.m. EDT today departing ridge located on a line
north-south over eastern Ontario.

At 10:30 a.m. EDT today departing trough located on a line
northeast-southwest over northern Ontario.

At 10:30 a.m. EDT today low 995 mb located over southeastern
South Dakota.
By 10:30 a.m. EDT Tuesday low 997 mb located over northeastern
Ontario.

Great Lakes - Lake Huron Area

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Marine Weather for Canada

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