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Northern Georgian Bay

Warnings

Forecast

Marine Forecast

Issued 03:00 AM EST 22 January 2026

Today Tonight and Friday.

Wind west 25 knots increasing to west 30 near noon then veering to northwest 25 near midnight. Wind diminishing to north 15 Friday evening.

Flurries ending Friday afternoon. Visibility 1 mile or less in flurries.

Freezing spray warning in effect.

Risk of freezing spray today. Freezing spray beginning late this afternoon and ending overnight. Risk of freezing spray late overnight and Friday morning.

Waves

Issued 03:00 AM EST 22 January 2026
Today Tonight and Friday. Over open water waves 1.5 metres building to 2 this afternoon then subsiding to 1.5 overnight. Waves subsiding to 1 Friday morning.

Extended Forecast

Issued 03:00 AM EST 22 January 2026
Saturday Wind north 15 knots diminishing to light in the afternoon.
Sunday Wind southeast 15 knots.
Monday Wind northeast 15 knots backing to northwest 20.

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

*Ice Forecast and Warnings also apply to U.S. waters

Ice Forecasts

Issued 12:00 PM EDT 16 May 2025 Forecasts have ended for the season.
Warnings

Warnings (In effect)

Freezing spray warning in effect

Northern Georgian Bay

Issued 03:00 AM EST 22 January 2026

Moderate or severe freezing spray is 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 or Weatheradio stations.

Synopsis

Technical Marine Synopsis

Issued 3:00 AM EST 22 January 2026 Today Tonight and Friday At 3:00 a.m. EST today low 1001 mb located over northeastern
Ontario.
By 3:00 a.m. EST Friday departing low 1004 mb located over eastern
Quebec.

At 3:00 a.m. EST today trough located on a line northwest-southeast
over Lake Superior.
By 3:00 a.m. EST Friday trough located on a line east-west over
Lake Nipissing.

Great Lakes - Lake Huron Area

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Marine Weather for Canada

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