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Northern Georgian Bay

Warnings

Forecast

Marine Forecast

Issued 06:30 PM EDT 15 March 2026

Tonight and Monday.

Wind east 30 knots backing to northeast 30 near midnight then veering to southeast 30 early Monday morning. Wind diminishing to southwest 20 near noon Monday then increasing to southwest 30 Monday evening.

Snow or freezing rain changing to showers overnight with a risk of thunderstorms then to periods of snow Monday afternoon. Visibility 1 mile or less in precipitation.

Waves

Issued 06:30 PM EDT 15 March 2026
Tonight and Monday. Mainly ice covered.

Extended Forecast

Issued 06:30 PM EDT 15 March 2026
Tuesday Wind west 30 knots diminishing to northwest 20 in the afternoon.
Wednesday Wind light increasing to south 20 knots.
Thursday Wind southwest 20 knots diminishing to light.

Ice Forecast*

Issued 12:00 PM EDT 15 March 2026 Today Tonight and Monday 7 tenths thin lake ice including 2 tenths thick lake ice except 9 tenths thick lake ice in the southwestern section. Consolidated 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 15 March 2026 Today Tonight and Monday

Ice Coverage

7 tenths thin lake ice including 2 tenths thick lake ice except 9
tenths thick lake ice in the southwestern section. Consolidated
thick lake ice along parts of the shore.

Warnings

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 6:30 PM EDT 15 March 2026 Tonight and Monday At 6:30 p.m. EDT tonight low 990 mb located over southern Lake
Michigan.
By 6:30 p.m. EDT Monday low 990 mb located over eastern Ontario.

Great Lakes - Lake Huron Area

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Marine Weather for Canada

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