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Northern Lake Huron

Warnings

Forecast

Marine Forecast

Issued 06:30 PM EDT 12 July 2025

Tonight and Sunday.

Strong wind warning in effect.

Wind southwest 20 knots diminishing to southwest 15 this evening and to west 10 late overnight. Wind backing to southwest 10 near noon Sunday then to south 10 Sunday evening.

Scattered showers ending Sunday morning with a risk of thunderstorms. Fog patches.

Waves

Issued 06:30 PM EDT 12 July 2025
Tonight and Sunday. Waves 1 to 1.5 metres subsiding to 0.5 to 1 near midnight and to 0.5 or less early Sunday morning.

Extended Forecast

Issued 06:30 PM EDT 12 July 2025
Monday Wind light becoming southwest 15 knots in the morning then diminishing to light late in the day.
Tuesday Wind light.
Wednesday Wind southwest 15 knots.

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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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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

Northern Lake Huron

Issued 6:30 PM EDT 12 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.

Watches (Ended)

Squall watch ended

Northern Lake Huron

Issued 6:52 PM EDT 12 July 2025
Synopsis

Technical Marine Synopsis

Issued 6:30 PM EDT 12 July 2025 Tonight and Sunday At 6:30 p.m. EDT tonight trough located on a line
northeast-southwest over Georgian Bay.
By 6:30 p.m. EDT Sunday trough located on a line northeast-southwest
over the St. Lawrence River.

At 6:30 p.m. EDT tonight low 1002 mb located over northern Ontario.
By 6:30 p.m. EDT Sunday low 988 mb located over southern Hudson Bay.

At 6:30 p.m. EDT tonight ridge located on a line north-south over
eastern Nebraska.
By 6:30 p.m. EDT Sunday ridge located on a line north-south over
Indiana.

Great Lakes - Lake Erie and Lake Ontario Area

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Marine Weather for Canada

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