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Southern Lake Huron

Warnings

Forecast

Marine Forecast

Issued 03:00 AM EDT 17 July 2025

Today Tonight and Friday.

Strong wind warning in effect.

Wind south 15 knots increasing to west 20 early this morning then veering to northwest 20 near noon. Wind diminishing to north 15 this evening and to northeast 10 overnight. Wind becoming light Friday morning.

Scattered showers ending near noon with a risk of thunderstorms. Fog patches dissipating early this morning.

Waves

Issued 03:00 AM EDT 17 July 2025
Today Tonight and Friday. Waves 0.5 to 1 metre building to 1.5 this afternoon then subsiding to 0.5 to 1 near midnight. Waves subsiding to 0.5 or less Friday morning.

Extended Forecast

Issued 03:00 AM EDT 17 July 2025
Saturday Wind light becoming south 15 knots in the afternoon then diminishing to light late in the day.
Sunday Wind light becoming north 15 knots.
Monday Wind light becoming northeast 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:
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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

Warnings (In effect)

Strong wind warning in effect

Southern Lake Huron

Issued 03:00 AM EDT 17 July 2025

'Strong' winds of 20 to 33 knots are occurring or expected to occur in this marine area. Please refer to the latest marine forecasts for further details and continue to monitor the situation through Canadian Coast Guard radio or Weatheradio stations.

Synopsis

Technical Marine Synopsis

Issued 3:00 AM EDT 17 July 2025 Today Tonight and Friday At 3:00 a.m. EDT today low 1005 mb located over northeastern
Lower Michigan.
By 3:00 a.m. EDT Friday low 999 mb located over eastern Quebec.

At 3:00 a.m. EDT today high 1022 mb located over North Dakota.
By 3:00 a.m. EDT Friday high 1022 mb located over central Lake
Michigan.

Great Lakes - Lake Erie and Lake Ontario Area

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Marine Weather for Canada

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