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Northern Lake Huron

Warnings

Forecast

Marine Forecast

Issued 06:30 PM EDT 09 August 2026

Tonight and Monday.

Wind south 15 knots diminishing to variable 10 near midnight then becoming northwest 10 Monday morning. Wind increasing to west 15 near noon Monday then veering to northwest 15 Monday evening.

Scattered showers with a risk of thunderstorms.

Waves

Issued 06:30 PM EDT 09 August 2026
Tonight and Monday. Waves 0.5 to 1 metre subsiding to 0.5 or less late overnight then building to 0.5 to 1 Monday afternoon.

Extended Forecast

Issued 06:30 PM EDT 09 August 2026
Tuesday Wind northwest 15 knots diminishing to light in the morning.
Wednesday Wind light.
Thursday Wind light becoming northwest 15 knots.

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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 6:30 PM EDT 9 August 2026 Tonight and Monday At 6:30 p.m. EDT tonight dissipating ridge located on a line
north-south over Lake Erie.

At 6:30 p.m. EDT tonight trough located on a line
northeast-southwest over Wisconsin.
By 6:30 p.m. EDT Monday trough located on a line north-south over
eastern Ontario.

Great Lakes - Lake Erie and Lake Ontario Area

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Marine Weather for Canada

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