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Eastern Lake Ontario

Warnings

Forecast

Marine Forecast

Issued 06:30 PM EDT 19 July 2026

Tonight and Monday.

Wind west 15 knots veering to northwest 15 this evening then diminishing to light early Monday morning. Wind becoming southeast 10 Monday afternoon.

Waves

Issued 06:30 PM EDT 19 July 2026
Tonight and Monday. Waves 0.5 to 1 metre subsiding to 0.5 or less near midnight.

Extended Forecast

Issued 06:30 PM EDT 19 July 2026
Tuesday Wind south 15 knots veering to southwest 20 in the morning then to northwest 20 late in the day.
Wednesday Wind west 25 knots.
Thursday Wind west 20 knots.

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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 17 May 2026 Forecasts have ended for the season.
Warnings

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 6:30 PM EDT 19 July 2026 Tonight and Monday At 6:30 p.m. EDT tonight ridge located over Lower Michigan.
By 6:30 p.m. EDT Monday departing ridge located off the East Coast
of the U.S.

At 6:30 p.m. EDT tonight low 998 mb located over northern Manitoba.
By 6:30 p.m. EDT Monday low 993 mb located north of Lake Superior.

Great Lakes - Lake Huron Area

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Marine Weather for Canada

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