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Southern Lake Huron

Warnings

Forecast

Marine Forecast

Issued 10:30 AM EDT 31 August 2026

Today Tonight and Tuesday.

Wind southwest 15 knots diminishing to variable 10 this afternoon then becoming west 10 late overnight. Wind becoming light near noon Tuesday.

Showers ending near midnight with a risk of thunderstorms. Scattered showers Tuesday late in the day with a risk of thunderstorms. Fog patches dissipating early this afternoon. Fog patches reforming near noon Tuesday.

Waves

Issued 10:30 AM EDT 31 August 2026
Today Tonight and Tuesday. Waves 0.5 to 1 metre subsiding to 0.5 or less early this evening.

Extended Forecast

Issued 03:00 AM EDT 31 August 2026
Wednesday Wind southwest 15 knots diminishing to light in the morning.
Thursday Wind light becoming northwest 15 knots.
Friday Wind light.

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Map of Great Lakes - Lake Erie and Lake Ontario marine weather areas Harrow AAFC Hamilton Munro Int'l Airport CFB Trenton Erieau Toronto City Centre Airport Point Pelee Peterborough Municipal Airport Burlington Lift Bridge Point Petre Cobourg Oshawa Executive Airport South Lake Huron - 45149 Port Colborne Brockville 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 Windsor Airport Lake St Clair - 45147 South Georgian Bay - 45143 Port Colborne - 45142 Grimsby - 45139 Georgian Bay - 45137 Prince Edward Point - 45135 Port Stanley - 45132 Welland-Pelham Grenadier Island Kingston Airport Collingwood Lagoon City Muskoka Airport Parry Sound Harbour Lake Simcoe Regional Airport Wiarton Airport Western Islands Sarnia Chris Hadfield Airport Vineland Station Southeast Shoal St. Catharines / Niagara District Airport Goderich Port Weller Long Point Tobermory
Legend:
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land station Land Station
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

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 10:30 AM EDT 31 August 2026 Today Tonight and Tuesday At 10:30 a.m. EDT today trough from 996 mb low located on a line
northwest-southeast over Lake Superior.
By 10:30 a.m. EDT Tuesday trough from 1002 mb low located on a
line northwest-southeast over northeastern Ontario.

Great Lakes - Lake Erie and Lake Ontario Area

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Marine Weather for Canada

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