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Southern Georgian Bay

Warnings

Forecast

Marine Forecast

Issued 10:30 AM EST 19 January 2026

Today Tonight and Tuesday.

Gale warning in effect.

Wind southwest 30 knots increasing to northwest 35 this afternoon then diminishing to northwest 25 this evening. Wind diminishing to northwest 15 near midnight then increasing to southwest 25 Tuesday morning.

Flurries. Visibility 1 mile or less in flurries.

Freezing spray warning in effect.

Risk of freezing spray late this morning. Freezing spray beginning early this afternoon and ending overnight. Risk of freezing spray late overnight and Tuesday morning. Freezing spray beginning near noon Tuesday.

Waves

Issued 10:30 AM EST 19 January 2026
Today Tonight and Tuesday. Over open water waves 1 to 1.5 metres building to 2 to 3 near noon then subsiding to 1 to 1.5 early Tuesday morning. Waves building to 2 near noon Tuesday.

Extended Forecast

Issued 03:00 AM EST 19 January 2026
Wednesday Wind southwest 25 knots.
Thursday Wind west 25 knots.
Friday Wind west 20 knots.

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

Gale warning in effect

Southern Georgian Bay

Issued 10:30 AM EST 19 January 2026

'Gale' force winds of 34 to 47 knots are occurring or expected to occur in this marine area. Watch for updated statements. Please refer to the latest marine forecasts for further details and continue to monitor the situation through Canadian Coast Guard radio or Weatheradio stations.

Freezing spray warning in effect

Southern Georgian Bay

Issued 10:30 AM EST 19 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 10:30 AM EST 19 January 2026 Today Tonight and Tuesday At 10:30 a.m. EST today low 1002 mb located north of Lake Nipissing.
By 10:30 a.m. EST Tuesday departing low 998 mb located over
Labrador.

At 10:30 a.m. EST today high 1037 mb located over Nebraska.
By 10:30 a.m. EST Tuesday high 1037 mb located over Kentucky.

Great Lakes - Lake Erie and Lake Ontario Area

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Marine Weather for Canada

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