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Georgian Bay

Warnings

Forecast

Marine Forecast

Issued 10:30 AM EDT 13 July 2026

Today Tonight and Tuesday.

Strong wind warning in effect.

Wind southwest 15 knots veering to west 15 early Tuesday morning then increasing to west 20 near noon Tuesday.

Risk of thunderstorms this evening.

Waves

Issued 10:30 AM EDT 13 July 2026
Today Tonight and Tuesday. Waves 0.5 to 1 metre building to 1 to 1.5 Tuesday afternoon.

Extended Forecast

Issued 03:00 AM EDT 13 July 2026
Wednesday Wind northwest 15 knots diminishing to light in the morning then becoming northwest 15 in the afternoon.
Thursday Wind light becoming northwest 15 knots.
Friday Wind light.

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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

Warnings (In effect)

Strong wind warning in effect

Georgian Bay

Issued 10:30 AM EDT 13 July 2026

'Strong' winds of 20 to 33 knots are occurring or expected to occur in this marine area. Please refer to the latest marine forecasts for further details and continue to monitor the situation through Canadian Coast Guard radio.

Synopsis

Technical Marine Synopsis

Issued 10:30 AM EDT 13 July 2026 Today Tonight and Tuesday At 10:30 a.m. EDT today ridge located on a line east-west over
southern Ontario.
By 10:30 a.m. EDT Tuesday ridge located on a line east-west
over Ohio.

At 10:30 a.m. EDT today low 999 mb located over western Hudson Bay.
By 10:30 a.m. EDT Tuesday low 984 mb located east of Hudson Bay.

Great Lakes - Lake Huron Area

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Marine Weather for Canada

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