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Northern Georgian Bay

Warnings

Forecast

Marine Forecast

Issued 10:30 AM EDT 13 October 2026

Today Tonight and Wednesday.

Strong wind warning in effect.

Wind northeast 15 knots diminishing to north 10 near noon then increasing to northwest 20 early this evening. Wind diminishing to northwest 15 near noon Wednesday then veering to north 15 Wednesday evening.

Scattered showers ending near midnight with a risk of thunderstorms. Scattered showers Wednesday morning. Fog patches dissipating early this evening.

Waves

Issued 10:30 AM EDT 13 October 2026
Today Tonight and Wednesday. Waves 0.5 to 1 metre subsiding to 0.5 or less this afternoon then building to 1 this evening.

Extended Forecast

Issued 03:00 AM EDT 13 October 2026
Thursday Wind northeast 15 knots veering to southeast 15 in the morning.
Friday Wind northeast 15 knots increasing to northwest 35 late in the day.
Saturday Wind northwest 25 knots backing to southwest 20 late in the day.

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Map of Great Lakes - Lake Erie and Lake Ontario marine weather areas Harrow AAFC Hamilton Munro Int'l Airport CFB Trenton Erieau Toronto City Centre Airport Point Pelee Peterborough Municipal Airport Burlington Lift Bridge Point Petre Cobourg Oshawa Executive Airport South Lake Huron - 45149 Port Colborne Brockville Gore Bay-Manitoulin Airport North Bay Airport Greater Sudbury Airport Killarney Sault Ste. Marie Airport Ajax - 45159 North Channel - 45154 Lake Nipissing - 45152 Lake Simcoe - 45151 Windsor Airport Lake St Clair - 45147 South Georgian Bay - 45143 Port Colborne - 45142 Grimsby - 45139 Georgian Bay - 45137 Prince Edward Point - 45135 Port Stanley - 45132 Welland-Pelham Grenadier Island Kingston Airport Collingwood Lagoon City Muskoka Airport Parry Sound Harbour Lake Simcoe Regional Airport Wiarton Airport Western Islands Sarnia Chris Hadfield Airport Vineland Station Southeast Shoal St. Catharines / Niagara District Airport Goderich Port Weller Long Point Tobermory
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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 12:11 PM EDT 13 October 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 October 2026 Today Tonight and Wednesday At 10:30 a.m. EDT today departing ridge located on a line
northwest-southeast over New Brunswick.

At 10:30 a.m. EDT today low 1004 mb located over northern Lower
Michigan.
By 10:30 a.m. EDT Wednesday low 1006 mb located over southwestern
New Brunswick.

By 10:30 a.m. EDT Wednesday ridge from high located on a line
east-west over Wisconsin.

Great Lakes - Lake Erie and Lake Ontario Area

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Marine Weather for Canada

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