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Eastern Lake Ontario

Warnings

Forecast

Marine Forecast

Issued 06:30 PM EDT 15 April 2026

Tonight and Thursday.

Wind variable 10 knots increasing to southwest 15 late overnight then diminishing to light Thursday morning. Wind increasing to west 20 Thursday evening.

Showers and fog patches with a risk of thunderstorms.

Waves

Issued 06:30 PM EDT 15 April 2026
Tonight and Thursday. Waves 0.5 metres or less building to 0.5 to 1 early Thursday morning then subsiding to 0.5 or less near noon Thursday.

Extended Forecast

Issued 06:30 PM EDT 15 April 2026
Friday Wind northwest 15 knots diminishing to light in the morning.
Saturday Wind light increasing to south 20 knots late in the day.
Sunday Wind west 20 knots veering to northwest 25 late in the day.

Ice Forecast*

Issued 12:00 PM EDT 15 April 2026 Today Tonight and Thursday 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 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 15 April 2026 Today Tonight and Thursday

Ice Coverage

Ice free.

Warnings

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 6:30 PM EDT 15 April 2026 Tonight and Thursday At 6:30 p.m. EDT tonight trough located on a line
northeast-southwest over Lower Michigan.
By 6:30 p.m. EDT Thursday low 1004 mb located over Lake Simcoe.

At 6:30 p.m. EDT tonight low 999 mb located over Lake Winnipeg.
By 6:30 p.m. EDT Thursday low 1007 mb located over northern Quebec.

By 6:30 p.m. EDT Thursday approaching trough located on a line
northeast-southwest over northwestern Ontario.

Great Lakes - Lake Huron Area

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Marine Weather for Canada

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