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Southern Lake Huron

Warnings

Forecast

Marine Forecast

Issued 06:30 PM EST 18 November 2025

Tonight and Wednesday.

Wind light becoming north 10 knots late overnight then becoming light Wednesday morning.

Waves

Issued 06:30 PM EST 18 November 2025
Tonight and Wednesday. Waves 0.5 metres or less.

Extended Forecast

Issued 06:30 PM EST 18 November 2025
Thursday Wind light increasing to southwest 20 knots late in the day.
Friday Wind west 20 knots.
Saturday Wind light becoming south 15 knots late in the day.

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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 EST 18 November 2025 Tonight and Wednesday At 6:30 p.m. EST tonight high 1020 mb located over Lake Superior.
By 6:30 p.m. EST Wednesday high 1026 mb located over southern
Ontario.

At 6:30 p.m. EST tonight low 1011 mb located over southern Missouri.
By 6:30 p.m. EST Wednesday departing low 1018 mb located over the
East Coast of the U.S.

By 6:30 p.m. EST Wednesday approaching trough located on a line
northeast-southwest over northwestern Ontario.

Great Lakes - Lake Erie and Lake Ontario Area

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Marine Weather for Canada

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