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Northern Georgian Bay

Warnings

Forecast

Marine Forecast

Issued 10:30 AM EDT 12 April 2026

Today Tonight and Monday.

Wind southeast 15 knots increasing to southeast 25 this afternoon then veering to southwest 25 near midnight. Wind diminishing to west 15 near noon Monday and to northeast 10 Monday evening.

Showers ending Monday afternoon. Risk of thunderstorms tonight and Monday morning. Fog patches forming this afternoon.

Waves

Issued 10:30 AM EDT 12 April 2026
Today Tonight and Monday. Over open water waves 0.5 to 1 metre building to 1.5 this afternoon then subsiding to 0.5 to 1 Monday afternoon.

Extended Forecast

Issued 03:00 AM EDT 12 April 2026
Tuesday Wind southeast 15 knots veering to southwest 20 in the afternoon then diminishing to north 15 late in the day.
Wednesday Wind southeast 15 knots veering to southwest 15.
Thursday Wind light increasing to southwest 20 knots.

Ice Forecast*

Issued 12:00 PM EDT 12 April 2026 Today Tonight and Monday 1 tenth thick lake ice except 9 tenths thick lake ice along the northeastern shore. Consolidated rotten thick lake ice along parts of the shore.

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

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

Ice Forecasts

Issued 12:00 PM EDT 12 April 2026 Today Tonight and Monday

Ice Coverage

1 tenth thick lake ice except 9 tenths thick lake ice along the
northeastern shore. Consolidated rotten thick lake ice along parts
of the shore.

Warnings

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 10:30 AM EDT 12 April 2026 Today Tonight and Monday At 10:30 a.m. EDT today departing ridge located on a line
north-south over western Quebec.

At 10:30 a.m. EDT today low 994 mb located over eastern North
Dakota.
By 10:30 a.m. EDT Monday trough from 979 mb low located on a line
northeast-southwest over northeastern Ontario.

Great Lakes - Lake Huron Area

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Marine Weather for Canada

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