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Southern Lake Huron

Warnings

Forecast

Marine Forecast

Issued 03:00 AM EDT 07 August 2026

Today Tonight and Saturday.

Wind light becoming south 10 knots early this morning then increasing to southwest 10 to 15 Saturday morning. Wind becoming northwest 10 Saturday evening.

Scattered showers beginning early this morning with a risk of thunderstorms. Fog patches dissipating near midnight.

Waves

Issued 03:00 AM EDT 07 August 2026
Today Tonight and Saturday. Waves 0.5 metres or less building to 0.5 to 1 Saturday morning then subsiding to 0.5 or less Saturday evening.

Extended Forecast

Issued 03:00 AM EDT 07 August 2026
Sunday Wind light becoming southwest 15 knots in the afternoon.
Monday Wind southwest 15 knots veering to northwest 15.
Tuesday 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:
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 3:00 AM EDT 7 August 2026 Today Tonight and Saturday At 3:00 a.m. EDT today ridge located on a line northeast-southwest
over southern Ontario.
By 3:00 a.m. EDT Saturday departing ridge located from North
Carolina to New Brunswick.

At 3:00 a.m. EDT today cold front located on a line north-south
over Lake of the Woods.
By 3:00 a.m. EDT Saturday cold front located from Whitefish Bay
to James Bay.

Great Lakes - Lake Erie and Lake Ontario Area

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Marine Weather for Canada

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