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Northern Georgian Bay

Warnings

Forecast

Marine Forecast

Issued 10:30 AM EDT 08 September 2026

Today Tonight and Wednesday.

Strong wind warning in effect.

Wind light becoming southeast 10 knots this afternoon then increasing to south 15 this evening. Wind increasing to south 20 late overnight then veering to southwest 20 near noon Wednesday.

Scattered showers tonight and Wednesday with a risk of thunderstorms.

Waves

Issued 10:30 AM EDT 08 September 2026
Today Tonight and Wednesday. Waves 0.5 metres or less building to 0.5 to 1 near midnight and to 1 to 1.5 early Wednesday morning.

Extended Forecast

Issued 03:00 AM EDT 08 September 2026
Thursday Wind west 20 knots.
Friday Wind light.
Saturday Wind south 15 knots.

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Map of Great Lakes - Lake Huron marine weather areas Erieau CFB Trenton Muskoka Airport Parry Sound Harbour Toronto City Centre Airport Lake Simcoe Regional Airport Wiarton Airport Point Petre Lagoon City Western Islands Cobourg Port Colborne Windsor Airport Point Pelee Welland-Pelham Vineland Station Burlington Lift Bridge Southeast Shoal St. Catharines / Niagara District Airport Goderich Port Weller Long Point Harrow AAFC Hamilton Munro Int'l Airport Tobermory Sarnia Chris Hadfield Airport Oshawa Executive Airport Collingwood Port Stanley - 45132 Prince Edward Point - 45135 Georgian Bay - 45137 Grimsby - 45139 Port Colborne - 45142 South Georgian Bay - 45143 Lake St Clair - 45147 South Lake Huron - 45149 Lake Simcoe - 45151 Lake Nipissing - 45152 North Channel - 45154 Ajax - 45159 Sault Ste. Marie Airport Killarney Greater Sudbury Airport North Bay Airport Gore Bay-Manitoulin Airport Peterborough Municipal Airport Brockville Grenadier Island Kingston Airport
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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

Northern Georgian Bay

Issued 10:30 AM EDT 08 September 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 8 September 2026 Today Tonight and Wednesday At 10:30 a.m. EDT today departing ridge located on a line
north-south over Quebec.

At 10:30 a.m. EDT today low 998 mb located over central Manitoba.
By 10:30 a.m. EDT Wednesday low 984 mb located over James Bay.

Great Lakes - Lake Huron Area

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Marine Weather for Canada

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