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Northern Lake Huron

Warnings

Forecast

Marine Forecast

Issued 10:30 AM EST 04 December 2025

Today Tonight and Friday.

Gale warning in effect.

Wind northwest 30 knots diminishing to northwest 15 this afternoon then backing to southwest 20 early this evening. Wind increasing to southwest 35 early Friday morning then diminishing to southwest 25 near noon Friday.

Scattered flurries. Visibility 1 mile or less in flurries.

Freezing spray warning in effect.

Freezing spray ending this evening. Risk of freezing spray late overnight and Friday.

Waves

Issued 10:30 AM EST 04 December 2025
Today Tonight and Friday. Waves 3 to 4 metres subsiding to 2 this afternoon and to 1 early this evening. Waves building to 3 late overnight then subsiding to 2 Friday afternoon.

Extended Forecast

Issued 03:00 AM EST 04 December 2025
Saturday Wind southwest 25 knots diminishing to light late in the day.
Sunday Wind light increasing to northwest 20 knots.
Monday Wind light increasing to southwest 25 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:
buoy Buoy
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)

Gale warning in effect

Northern Lake Huron

Issued 10:30 AM EST 04 December 2025

'Gale' force winds of 34 to 47 knots are occurring or expected to occur in this marine area. Watch for updated statements. Please refer to the latest marine forecasts for further details and continue to monitor the situation through Canadian Coast Guard radio or Weatheradio stations.

Freezing spray warning in effect

Northern Lake Huron

Issued 10:30 AM EST 04 December 2025

Moderate or severe freezing spray is 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 10:30 AM EST 4 December 2025 Today Tonight and Friday At 10:30 a.m. EST today departing cold front located on a line
northeast-southwest over New England.

At 10:30 a.m. EST today ridge located on a line northeast-southwest
over Iowa.
By 10:30 a.m. EST Friday ridge located on a line northeast-southwest
over New England.

At 10:30 a.m. EST today cold front located on a line east-west
over Saskatchewan.
By 10:30 a.m. EST Friday cold front located on a line
northeast-southwest over Lake Superior.

Great Lakes - Lake Erie and Lake Ontario Area

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Marine Weather for Canada

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