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Northern Georgian Bay

Warnings

Forecast

Marine Forecast

Issued 10:30 AM EDT 30 April 2025

Today Tonight and Thursday.

Wind variable 10 knots becoming light early this evening then becoming southeast 10 late overnight. Wind increasing to east 15 near noon Thursday then backing to northeast 20 Thursday afternoon.

Showers and fog patches Thursday afternoon and evening.

Waves

Issued 10:30 AM EDT 30 April 2025
Today Tonight and Thursday. Waves 0.5 metres or less building to 1 Thursday afternoon.

Extended Forecast

Issued 03:00 AM EDT 30 April 2025
Friday Wind northeast 15 knots backing to northwest 15 in the morning.
Saturday Wind light.
Sunday Wind northwest 15 knots diminishing to light late in the day.

Ice Forecast*

Issued 12:00 PM EDT 30 April 2025 Today Tonight and Thursday 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 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 30 April 2025 Today Tonight and Thursday

Ice Coverage

Open water.

Warnings

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 10:30 AM EDT 30 April 2025 Today Tonight and Thursday At 10:30 a.m. EDT today high 1025 mb located over northeastern
Ontario.
By 10:30 a.m. EDT Thursday high 1024 mb located over eastern Quebec.

By 10:30 a.m. EDT Thursday approaching low 1004 mb located over
Lake Michigan.

Great Lakes - Lake Erie and Lake Ontario Area

Another Region

Marine Weather for Canada

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