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Southern Georgian Bay

Warnings

Forecast

Marine Forecast

Issued 06:30 PM EDT 23 April 2026

Tonight and Friday.

Wind northeast 10 knots increasing to east 15 this evening then veering to southeast 15 Friday evening.

Scattered showers overnight and Friday morning.

Waves

Issued 06:30 PM EDT 23 April 2026
Tonight and Friday. Waves 0.5 metres or less building to 0.5 to 1 near midnight.

Extended Forecast

Issued 06:30 PM EDT 23 April 2026
Saturday Wind southeast 15 knots backing to northeast 15 in the afternoon then diminishing to light late in the day.
Sunday Wind light.
Monday Wind light becoming southeast 15 knots late in the day.

Ice Forecast*

Issued 12:00 PM EDT 23 April 2026 Today Tonight and Friday Open water.

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

 

[ Canadian Ice Service ]

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

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

Ice Forecasts

Issued 12:00 PM EDT 23 April 2026 Today Tonight and Friday

Ice Coverage

Open water.

Warnings

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 6:30 PM EDT 23 April 2026 Tonight and Friday At 6:30 p.m. EDT tonight ridge located on a line north-south over
eastern Ontario.
By 6:30 p.m. EDT Friday ridge located on a line north-south over
western Quebec.

At 6:30 p.m. EDT tonight cold front located from Lake of the Woods
to Kansas.
By 6:30 p.m. EDT Friday cold front located on a line north-south
over Michigan.

Great Lakes - Lake Erie and Lake Ontario Area

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Marine Weather for Canada

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