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Northern Georgian Bay

Warnings

Forecast

Marine Forecast

Issued 03:00 AM EDT 24 April 2025

Today Tonight and Friday.

Wind southeast 15 knots diminishing to variable 10 early this morning then becoming west 10 this afternoon. Wind becoming light this evening then increasing to northeast 15 Friday morning. Wind increasing to northeast 20 Friday evening.

Scattered showers ending near noon with a risk of thunderstorms. Showers overnight and Friday. Risk of thunderstorms Friday afternoon and evening. Fog patches forming early this morning.

Waves

Issued 03:00 AM EDT 24 April 2025
Today Tonight and Friday. Waves 0.5 to 1 metre subsiding to 0.5 or less this morning then building to 0.5 to 1 Friday morning. Waves building to 1 to 1.5 Friday evening.

Extended Forecast

Issued 03:00 AM EDT 24 April 2025
Saturday Wind north 25 knots diminishing to northwest 15 late in the day.
Sunday Wind northwest 15 knots diminishing to light.
Monday Wind light becoming southeast 15 knots late in the day.

Ice Forecast*

Issued 12:00 PM EDT 23 April 2025 Today Tonight and Thursday 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 23 April 2025 Today Tonight and Thursday

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 3:00 AM EDT 24 April 2025 Today Tonight and Friday At 3:00 a.m. EDT today weakening low 1017 mb located over eastern
Lake Superior.
By 3:00 a.m. EDT Friday weakening low 1022 mb located over New
Brunswick.

At 3:00 a.m. EDT today ridge located on a line northeast-southwest
over northwestern Ontario.
By 3:00 a.m. EDT Friday ridge located on a line northeast-southwest
over James Bay.

Great Lakes - Lake Erie and Lake Ontario Area

Another Region

Marine Weather for Canada

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