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Eastern Lake Ontario

Warnings

Forecast

Marine Forecast

Issued 06:30 PM EDT 09 June 2026

Tonight and Wednesday.

Wind light becoming south 10 knots this evening then increasing to south 15 early Wednesday morning. Wind diminishing to light near noon Wednesday then becoming southwest 10 Wednesday evening.

Scattered showers and fog patches with a risk of thunderstorms.

Waves

Issued 06:30 PM EDT 09 June 2026
Tonight and Wednesday. Waves 0.5 metres or less building to 0.5 to 1 Wednesday morning then subsiding to 0.5 or less Wednesday afternoon.

Extended Forecast

Issued 06:30 PM EDT 09 June 2026
Thursday Wind light becoming southwest 15 knots in the morning then diminishing to light late in the day.
Friday Wind light becoming west 15 knots.
Saturday Wind west 15 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 9 June 2026 Tonight and Wednesday At 6:30 p.m. EDT tonight low 1010 mb located over Lower Michigan.
By 6:30 p.m. EDT Wednesday low 1005 mb located over eastern Ontario.

At 6:30 p.m. EDT tonight low 994 mb located over western North
Dakota.
By 6:30 p.m. EDT Wednesday low 991 mb located over southeastern
Manitoba.

At 6:30 p.m. EDT tonight departing high 1022 mb located off the
East Coast of the U.S.

Great Lakes - Lake Huron Area

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Marine Weather for Canada

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