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Southern Lake Huron

Warnings

Forecast

Marine Forecast

Issued 06:30 PM EST 05 March 2026

Tonight and Friday.

Wind east 15 knots diminishing to east 10 near midnight then veering to southeast 10 early Friday morning. Wind increasing to southeast 15 near noon Friday then veering to south 20 Friday evening.

Periods of rain this evening. Periods of drizzle Friday afternoon changing to rain and fog patches with a risk of thunderstorms.

Waves

Issued 06:30 PM EST 05 March 2026
Tonight and Friday. Over open water waves 0.5 to 1 metre subsiding to 0.5 or less this evening then building to 0.5 to 1 Friday evening.

Extended Forecast

Issued 06:30 PM EST 05 March 2026
Saturday Wind southwest 25 knots veering to northwest 25 late in the day.
Sunday Wind northwest 25 knots backing to southwest 25.
Monday Wind southwest 20 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
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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 6:30 PM EST 5 March 2026 Tonight and Friday At 6:30 p.m. EST tonight ridge located on a line northwest-southeast
over central Quebec.
By 6:30 p.m. EST Friday departing ridge located on a line
northwest-southeast over Labrador.

At 6:30 p.m. EST tonight low 1017 mb located over Lake Erie.
By 6:30 p.m. EST Friday departing low 1020 mb located over the
East Coast of the U.S.

By 6:30 p.m. EST Friday trough located on a line north-south over
Lake Superior.

Great Lakes - Lake Erie and Lake Ontario Area

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Marine Weather for Canada

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