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Southern Lake Huron

Warnings

Forecast

Marine Forecast

Issued 10:30 AM EDT 22 July 2026

Today Tonight and Thursday.

Strong wind warning in effect.

Wind northwest 25 knots diminishing to northwest 15 near midnight and to west 10 early Thursday morning. Wind backing to south 10 Thursday afternoon.

Waves

Issued 10:30 AM EDT 22 July 2026
Today Tonight and Thursday. Waves 2 to 3 metres subsiding to 1.5 this afternoon and to 1 late overnight. Waves subsiding to 0.5 or less Thursday morning.

Extended Forecast

Issued 03:00 AM EDT 22 July 2026
Friday Wind south 15 knots.
Saturday Wind south 15 knots diminishing to light late in the day.
Sunday Wind light.

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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

Lake Huron

Issued 12:00 PM EDT 17 May 2026 Forecasts have ended for the season.

Ice Forecasts

Lake Michigan

Issued 12:00 PM EDT 17 May 2026 Forecasts have ended for the season.
Warnings

Warnings (In effect)

Strong wind warning in effect

Southern Lake Huron

Issued 10:30 AM EDT 22 July 2026

'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.

Synopsis

Technical Marine Synopsis

Issued 10:30 AM EDT 22 July 2026 Today Tonight and Thursday At 10:30 a.m. EDT today departing trough from 996 mb low located
on a line north-south over Montréal.

At 10:30 a.m. EDT today ridge located on a line northwest-southeast
over Minnesota.
By 10:30 a.m. EDT Thursday ridge located on a line east-west over
southwestern Ontario.

By 10:30 a.m. EDT Thursday low 1006 mb located near Hudson Bay.

Great Lakes - Lake Huron Area

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Marine Weather for Canada

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