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Northern Lake Huron

Warnings

Forecast

Marine Forecast

Issued 06:30 PM EDT 18 April 2026

Tonight and Sunday.

Wind northwest 20 knots backing to west 15 near midnight then veering to northwest 20 Sunday morning. Wind increasing to northwest 25 Sunday afternoon.

Scattered showers becoming scattered flurries or scattered showers this evening.

Waves

Issued 06:30 PM EDT 18 April 2026
Tonight and Sunday. Waves 1 to 1.5 metres subsiding to 0.5 to 1 late overnight then building to 1 to 1.5 near noon Sunday. Waves building to 2 Sunday evening.

Extended Forecast

Issued 06:30 PM EDT 18 April 2026
Monday Wind northwest 20 knots diminishing to south 15 late in the day.
Tuesday Wind south 25 knots diminishing to south 15 late in the day.
Wednesday Wind light.

Ice Forecast*

Issued 12:00 PM EDT 18 April 2026 Today Tonight and Sunday Open water except 2 tenths thick lake ice near the Straits of Mackinac and near North Channel. Consolidated rotten thick lake ice along parts of the northwestern shore.

*Ice Forecast and Warnings also apply to U.S. waters

    

[ Canadian Ice Service ]

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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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Ice Conditions

*Ice Forecast and Warnings also apply to U.S. waters

Ice Forecasts

Northern Lake Huron

Issued 12:00 PM EDT 18 April 2026 Today Tonight and Sunday

Ice Coverage

Open water except 2 tenths thick lake ice near the Straits of
Mackinac and near North Channel. Consolidated rotten thick lake ice
along parts of the northwestern shore.

Ice Forecasts

Northern Lake Michigan

Issued 12:00 PM EDT 18 April 2026 Today Tonight and Sunday

Ice Coverage

Open water except 2 tenths thick lake ice in and near the Straits of
Mackinac.

Ice Forecasts

Southern Lake Michigan

Issued 12:00 PM EDT 18 April 2026 Today Tonight and Sunday

Ice Coverage

Ice free.

Ice Forecasts

Green Bay

Issued 12:00 PM EDT 18 April 2026 Today Tonight and Sunday

Ice Coverage

Open water. Consolidated rotten thick lake ice in Bays de Noc.

Warnings

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 6:30 PM EDT 18 April 2026 Tonight and Sunday At 6:30 p.m. EDT tonight low 979 mb located over southern Hudson
Bay.
By 6:30 p.m. EDT Sunday low 990 mb located over eastern Hudson Bay.

At 6:30 p.m. EDT tonight cold front located on a line north-south
over eastern Lake Ontario.
By 6:30 p.m. EDT Sunday departing cold front located on a line
northeast-southwest over the Maritimes.

Great Lakes - Lake Erie and Lake Ontario Area

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Marine Weather for Canada

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