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Southern Lake Huron

Warnings

Forecast

Marine Forecast

Issued 10:30 AM EDT 20 April 2026

Today Tonight and Tuesday.

Wind northwest 10 knots becoming light this afternoon then increasing to south 20 this evening. Wind increasing to south 25 late overnight then diminishing to south 15 Tuesday afternoon. Wind diminishing to southeast 10 Tuesday evening.

Waves

Issued 10:30 AM EDT 20 April 2026
Today Tonight and Tuesday. Waves 0.5 to 1 metre building to 2 late overnight then subsiding to 1 to 1.5 near noon Tuesday. Waves subsiding to 0.5 or less Tuesday evening.

Extended Forecast

Issued 03:00 AM EDT 20 April 2026
Wednesday Wind light.
Thursday Wind light becoming southeast 15 knots.
Friday Wind southeast 20 knots.

Ice Forecast*

Issued 12:00 PM EDT 20 April 2026 Today Tonight and Tuesday Ice free.

*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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land station Land Station
Ice Conditions

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

Ice Forecasts

Southern Lake Huron

Issued 12:00 PM EDT 20 April 2026 Today Tonight and Tuesday

Ice Coverage

Ice free.

Ice Forecasts

Northern Lake Michigan

Issued 12:00 PM EDT 20 April 2026 Today Tonight and Tuesday

Ice Coverage

Open water except 2 tenths thick lake ice in Little Traverse Bay.

Ice Forecasts

Southern Lake Michigan

Issued 12:00 PM EDT 20 April 2026 Today Tonight and Tuesday

Ice Coverage

Ice free.

Ice Forecasts

Green Bay

Issued 12:00 PM EDT 20 April 2026 Today Tonight and Tuesday

Ice Coverage

Open water except 7 tenths thick lake ice in Bays de Noc.

Warnings

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 10:30 AM EDT 20 April 2026 Today Tonight and Tuesday At 10:30 a.m. EDT today high 1030 mb located over Lower Michigan.
By 10:30 a.m. EDT Tuesday high 1030 mb located over New Brunswick.

At 10:30 a.m. EDT today trough located on a line north-south
over Manitoba.
By 10:30 a.m. EDT Tuesday trough 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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