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Northern Georgian Bay

Warnings

Forecast

Marine Forecast

Issued 10:30 AM EDT 04 May 2025

Today Tonight and Monday.

Strong wind warning in effect.

Wind northeast 10 knots increasing to northeast 15 near noon and to northeast 20 this evening. Wind diminishing to northeast 15 Monday morning and to northeast 10 Monday afternoon.

Showers Monday.

Waves

Issued 10:30 AM EDT 04 May 2025
Today Tonight and Monday. Waves 0.5 metres or less building to 0.5 to 1 this afternoon then subsiding to 0.5 or less Monday evening.

Extended Forecast

Issued 03:00 AM EDT 04 May 2025
Tuesday Wind light.
Wednesday Wind light becoming north 15 knots.
Thursday Wind northeast 15 knots backing to northwest 15.

Ice Forecast*

Issued 12:00 PM EDT 4 May 2025 Today Tonight and Monday 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:
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land station Land Station
Ice Conditions

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

Ice Forecasts

Issued 12:00 PM EDT 4 May 2025 Today Tonight and Monday

Ice Coverage

Open water.

Warnings

Warnings (In effect)

Strong wind warning in effect

Georgian Bay

Issued 10:30 AM EDT 04 May 2025

'Strong' winds of 20 to 33 knots are 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 EDT 4 May 2025 Today Tonight and Monday At 10:30 a.m. EDT today high 1024 mb located west of James Bay.
By 10:30 a.m. EDT Monday high 1028 mb located northwest of New
Brunswick.

At 10:30 a.m. EDT today low 1007 mb located over southern Ohio.
By 10:30 a.m. EDT Monday low 1013 mb located over Indiana.

At 10:30 a.m. EDT today low 997 mb located over Saskatchewan.
By 10:30 a.m. EDT Monday low 997 mb located over central Hudson Bay.

Great Lakes - Lake Erie and Lake Ontario Area

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Marine Weather for Canada

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