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Southern Georgian Bay

Warnings

Forecast

Marine Forecast

Issued 06:30 PM EDT 29 April 2025

Tonight and Wednesday.

Gale warning in effect.

Wind northwest 40 knots diminishing to northwest 20 this evening then veering to north 15 near midnight. Wind diminishing to variable 10 early Wednesday morning.

Waves

Issued 06:30 PM EDT 29 April 2025
Tonight and Wednesday. Waves 3 metres subsiding to 2 near midnight and to 1 late overnight. Waves subsiding to 0.5 or less Wednesday morning.

Extended Forecast

Issued 06:30 PM EDT 29 April 2025
Thursday Wind light becoming southeast 15 knots in the afternoon.
Friday Wind northeast 15 knots increasing to northwest 25.
Saturday Wind light.

Ice Forecast*

Issued 12:00 PM EDT 29 April 2025 Today Tonight and Wednesday Ice free.

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

 

[ Canadian Ice Service ]

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

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

Ice Forecasts

Issued 12:00 PM EDT 29 April 2025 Today Tonight and Wednesday

Ice Coverage

Ice free.

Warnings

Warnings (In effect)

Gale warning in effect

Georgian Bay

Issued 7:15 PM EDT 29 April 2025

'Gale' force winds of 34 to 47 knots are occurring or expected to occur in this marine area. Watch for updated statements. 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 6:30 PM EDT 29 April 2025 Tonight and Wednesday At 6:30 p.m. EDT tonight low 997 mb located over southern Quebec.
By 6:30 p.m. EDT Wednesday departing low 990 mb located northeast
of Prince Edward Island.

At 6:30 p.m. EDT tonight ridge located on a line northeast-southwest
over northwestern Ontario.
By 6:30 p.m. EDT Wednesday ridge located on a line
northeast-southwest over Lake Huron.

By 6:30 p.m. EDT Wednesday trough located on a line
northeast-southwest over the Ontario - Manitoba border.

Great Lakes - Lake Huron Area

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Marine Weather for Canada

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