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Northern Lake Huron

Warnings

Forecast

Marine Forecast

Issued 06:30 PM EDT 12 July 2026

Tonight and Monday.

Wind south 15 knots veering to southwest 15 near midnight. Wind southwest 15 Monday.

Risk of thunderstorms tonight.

Waves

Issued 06:30 PM EDT 12 July 2026
Tonight and Monday. Waves 0.5 metres or less building to 1 to 1.5 late overnight.

Extended Forecast

Issued 06:30 PM EDT 12 July 2026
Tuesday Wind southwest 15 knots.
Wednesday Wind northwest 15 knots.
Thursday Wind northwest 15 knots.

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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
Legend:
buoy Buoy
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 12 July 2026 Tonight and Monday At 6:30 p.m. EDT tonight ridge located on a line east-west over
southern Ontario.
By 6:30 p.m. EDT Monday ridge located on a line east-west over
Pennsylvania.

At 6:30 p.m. EDT tonight low 1004 mb located over northeastern
Manitoba.
By 6:30 p.m. EDT Monday low 994 mb located over eastern Hudson Bay.

Great Lakes - Lake Erie and Lake Ontario Area

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Marine Weather for Canada

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