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Southern Lake Huron

Warnings

Forecast

Marine Forecast

Issued 03:00 AM EST 05 March 2026

Today Tonight and Friday.

Wind light increasing to northeast 20 knots early this morning then veering to east 15 early this evening. Wind diminishing to east 10 near midnight then veering to southeast 10 Friday morning. Wind increasing to southeast 15 near noon Friday and to south 25 Friday evening.

Periods of rain beginning early this morning changing to periods of drizzle near midnight and ending near noon Friday. Scattered showers and fog patches Friday evening with a risk of thunderstorms.

Waves

Issued 03:00 AM EST 05 March 2026
Today Tonight and Friday. Over open water waves less than 0.5 metres building to 0.5 to 1 this morning then subsiding to 0.5 this evening. Waves building to 0.5 to 1 Friday evening.

Extended Forecast

Issued 03:00 AM EST 05 March 2026
Saturday Wind southwest 25 knots veering to northwest 25 late in the day.
Sunday Wind west 15 knots increasing to southwest 30 late in the day.
Monday Wind southwest 25 knots diminishing to southwest 15 late in the day.

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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 3:00 AM EST 5 March 2026 Today Tonight and Friday At 3:00 a.m. EST today ridge located on a line northwest-southeast
over northern Ontario.
By 3:00 a.m. EST Friday departing ridge located on a line east-west
over central Quebec.

At 3:00 a.m. EST today low 1014 mb located over Missouri.
By 3:00 a.m. EST Friday low 1015 mb located over Pennsylvania.

At 3:00 a.m. EST Friday approaching trough located from Nebraska
to Lake of the Woods.

Great Lakes - Lake Erie and Lake Ontario Area

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Marine Weather for Canada

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