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Northern Georgian Bay

Warnings

Forecast

Marine Forecast

Issued 10:30 AM EDT 26 April 2025

Today Tonight and Sunday.

Wind north 20 knots backing to northwest 25 near noon then diminishing to northwest 15 late overnight. Wind diminishing to variable 10 Sunday morning then increasing to west 15 Sunday afternoon. Wind diminishing to west 10 Sunday evening.

Periods of rain ending this evening.

Waves

Issued 10:30 AM EDT 26 April 2025
Today Tonight and Sunday. Waves 1 to 1.5 metres subsiding to 0.5 to 1 early Sunday morning and to 0.5 or less near noon Sunday.

Extended Forecast

Issued 03:00 AM EDT 26 April 2025
Monday Wind light becoming south 15 knots late in the day.
Tuesday Wind south 20 knots increasing to west 30 late in the day.
Wednesday Wind northwest 25 knots diminishing to light.

Ice Forecast*

Issued 12:00 PM EDT 25 April 2025 Today Tonight and Saturday Open water except 1 tenth thick lake ice along parts of the northern shore.

*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 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
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 25 April 2025 Today Tonight and Saturday

Ice Coverage

Open water except 1 tenth thick lake ice along parts of the northern
shore.

Warnings

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 10:30 AM EDT 26 April 2025 Today Tonight and Sunday At 10:30 a.m. EDT today low 1005 mb located over northern New
York State.
By 10:30 a.m. EDT Sunday departing low 1002 mb located over
southern Maine.

At 10:30 a.m. EDT today high 1030 mb located over Duluth.
By 10:30 a.m. EDT Sunday high 1028 mb located over Windsor.

Great Lakes - Lake Erie and Lake Ontario Area

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Marine Weather for Canada

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