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Southern Lake Huron

Warnings

Forecast

Marine Forecast

Issued 03:00 AM EDT 18 July 2025

Today Tonight and Saturday.

Wind variable 10 knots becoming light this morning then becoming south 10 this evening. Wind increasing to west 15 near noon Saturday then diminishing to variable 10 Saturday evening.

Scattered showers Saturday with a risk of thunderstorms.

Waves

Issued 03:00 AM EDT 18 July 2025
Today Tonight and Saturday. Waves 0.5 to 1 metre subsiding to 0.5 or less early this morning then building to 0.5 to 1 Saturday afternoon.

Extended Forecast

Issued 03:00 AM EDT 18 July 2025
Sunday Wind northwest 15 knots.
Monday Wind light becoming northeast 15 knots late in the day.
Tuesday Wind east 15 knots diminishing to 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
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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 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 3:00 AM EDT 18 July 2025 Today Tonight and Saturday At 3:00 a.m. EDT today departing trough located on a line
northeast-southwest over the East Coast of the U.S.

At 3:00 a.m. EDT today high 1021 mb located over Lake Superior.
By 3:00 a.m. EDT Saturday high 1020 mb located over eastern Ontario.

Great Lakes - Lake Erie and Lake Ontario Area

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Marine Weather for Canada

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