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Southern Lake Huron

Warnings

Forecast

Marine Forecast

Issued 06:30 PM EDT 07 July 2025

Tonight and Tuesday.

Wind north 15 knots diminishing to north 10 near midnight then becoming light Tuesday morning. Wind becoming northeast 10 Tuesday evening.

Waves

Issued 06:30 PM EDT 07 July 2025
Tonight and Tuesday. Waves 0.5 to 1 metre subsiding to 0.5 or less late overnight.

Extended Forecast

Issued 06:30 PM EDT 07 July 2025
Wednesday Wind northeast 15 knots diminishing to light in the afternoon then becoming north 15 late in the day.
Thursday Wind light.
Friday Wind light.

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Map of Great Lakes - Lake Erie and Lake Ontario marine weather areas Harrow AAFC Burlington Lift Bridge Oshawa Executive Airport Point Pelee Peterborough Municipal Airport Point Petre Hamilton Munro Int'l Airport Erieau Cobourg Toronto City Centre Airport Port Colborne CFB Trenton South Lake Huron - 45149 Windsor Airport Great Duck Island 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 Welland-Pelham Lake St Clair - 45147 South Georgian Bay - 45143 Port Colborne - 45142 Grimsby - 45139 Georgian Bay - 45137 Prince Edward Point - 45135 Port Stanley - 45132 Vineland Station Brockville Grenadier Island Kingston Airport Collingwood Lagoon City Muskoka Airport Parry Sound Harbour Lake Simcoe Regional Airport Wiarton Airport Cove Island Goderich Sarnia Chris Hadfield Airport Western Islands Tobermory Long Point Port Weller St. Catharines / Niagara District Airport Southeast Shoal
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 16 May 2025 Forecasts have ended for the season.

Ice Forecasts

Lake Michigan

Issued 12:00 PM EDT 16 May 2025 Forecasts have ended for the season.
Warnings

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 6:30 PM EDT 7 July 2025 Tonight and Tuesday At 6:30 p.m. EDT tonight departing low 1011 mb located over Vermont.

At 6:30 p.m. EDT tonight ridge located on a line northeast-southwest
over northern Ontario.
By 6:30 p.m. EDT Tuesday ridge located on a line northeast-southwest
over southern Ontario.

At 6:30 p.m. EDT tonight low 1012 mb located over northwestern
Minnesota.
By 6:30 p.m. EDT Tuesday low 1014 mb located over Wisconsin.

Great Lakes - Lake Erie and Lake Ontario Area

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Marine Weather for Canada

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