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Northern Lake Huron

Warnings

Forecast

Marine Forecast

Issued 10:30 AM EST 05 March 2026

Today Tonight and Friday.

Wind northeast 25 knots veering to east 20 this evening then diminishing to east 15 late overnight. Wind veering to southeast 15 Friday morning then to southwest 20 Friday evening.

Periods of drizzle Friday morning and afternoon with a risk of freezing drizzle changing to periods of rain and fog patches with a risk of thunderstorms.

Waves

Issued 10:30 AM EST 05 March 2026
Today Tonight and Friday. Over open water waves 1 to 1.5 metres subsiding to 0.5 to 1 early Friday morning then building to 1.5 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 10:30 AM EST 5 March 2026 Today Tonight and Friday At 10:30 a.m. EST today ridge located on a line northwest-southeast
over central Quebec.
By 10:30 a.m. EST Friday departing ridge located on a line
north-south over eastern Quebec.

At 10:30 a.m. EST today low 1015 mb located over Indiana.
By 10:30 a.m. EST Friday departing low 1018 mb located over the
East Coast of the U.S.

At 10:30 a.m. EST today trough located from North Dakota to Lake
of the Woods.
By 10:30 a.m. EST Friday trough located on a line north-south over
northwestern Ontario.

Great Lakes - Lake Erie and Lake Ontario Area

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Marine Weather for Canada

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