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Northern Lake Huron

Warnings

Forecast

Marine Forecast

Issued 06:30 PM EDT 16 July 2026

Tonight and Friday.

Wind northwest 15 knots diminishing to light near midnight then becoming southeast 10 Friday morning. Wind increasing to southeast 15 Friday evening.

Scattered showers Friday evening with a risk of thunderstorms. Smoke dissipating late overnight. Smoke reforming Friday afternoon. Visibility as low as 1 mile in smoke.

Waves

Issued 06:30 PM EDT 16 July 2026
Tonight and Friday. Waves 0.5 to 1 metre subsiding to 0.5 or less late overnight.

Extended Forecast

Issued 06:30 PM EDT 16 July 2026
Saturday Wind southwest 20 knots veering to northwest 20 in the afternoon.
Sunday Wind northwest 20 knots diminishing to light late in the day.
Monday Wind light increasing to southwest 20 knots late in the day.

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Map of Great Lakes - Lake Erie and Lake Ontario marine weather areas CFB Trenton Port Colborne - 45142 Hamilton Munro Int'l Airport Oshawa Executive Airport Port Stanley - 45132 Lake Nipissing - 45152 Point Petre Georgian Bay - 45137 Toronto City Centre Airport Lake Simcoe - 45151 South Georgian Bay - 45143 Prince Edward Point - 45135 Peterborough Municipal Airport South Lake Huron - 45149 Collingwood Lake St Clair - 45147 Grimsby - 45139 Goderich Lagoon City Kingston Airport Muskoka Airport Parry Sound Harbour Grenadier Island Lake Simcoe Regional Airport Wiarton Airport Brockville Western Islands Cove Island Great Duck Island North Channel - 45154 Sarnia Chris Hadfield Airport Gore Bay-Manitoulin Airport Tobermory Harrow AAFC Long Point North Bay Airport Port Weller St. Catharines / Niagara District Airport Greater Sudbury Airport Southeast Shoal Vineland Station Port Colborne Erieau Cobourg Sault Ste. Marie Airport Windsor Airport Welland-Pelham Killarney Ajax - 45159 Point Pelee Burlington Lift Bridge
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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 6:30 PM EDT 16 July 2026 Tonight and Friday At 6:30 p.m. EDT tonight ridge located on a line northwest-southeast
over northern Ontario.
By 6:30 p.m. EDT Friday ridge located on a line north-south over
eastern Lake Ontario.

At 6:30 p.m. EDT tonight low 1007 mb located over South Dakota.
By 6:30 p.m. EDT Friday low 1007 mb located over Lake Superior.

Great Lakes - Lake Erie and Lake Ontario Area

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Marine Weather for Canada

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