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Southern Lake Huron

Warnings

Forecast

Marine Forecast

Issued 03:00 AM EDT 12 April 2026

Today Tonight and Monday.

Wind southeast 15 knots increasing to southeast 20 this morning then veering to south 20 this afternoon. Wind veering to southwest 20 this evening then increasing to southwest 25 overnight. Wind diminishing to west 15 Monday afternoon and to variable 10 Monday evening.

Showers beginning early this morning. Risk of thunderstorms late this afternoon tonight and Monday morning. Fog patches forming this afternoon.

Waves

Issued 03:00 AM EDT 12 April 2026
Today Tonight and Monday. Waves 0.5 to 1 metre building to 1.5 this afternoon then subsiding to 0.5 to 1 Monday evening.

Extended Forecast

Issued 03:00 AM EDT 12 April 2026
Tuesday Wind east 15 knots increasing to southwest 20 in the morning then diminishing to north 15 late in the day.
Wednesday Wind east 15 knots becoming southwest 15.
Thursday Wind southeast 15 knots veering to southwest 20.

Ice Forecast*

Issued 12:00 PM EDT 11 April 2026 Today Tonight and Sunday 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
Legend:
buoy Buoy
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 11 April 2026 Today Tonight and Sunday

Ice Coverage

Ice free.

Ice Forecasts

Northern Lake Michigan

Issued 12:00 PM EDT 11 April 2026 Today Tonight and Sunday

Ice Coverage

Open water except 1 tenth thick lake ice north of and south of Fox
Islands. Consolidated thick lake ice in and near the Straits of
Mackinac.

Ice Forecasts

Southern Lake Michigan

Issued 12:00 PM EDT 11 April 2026 Today Tonight and Sunday

Ice Coverage

Ice free.

Ice Forecasts

Green Bay

Issued 12:00 PM EDT 11 April 2026 Today Tonight and Sunday

Ice Coverage

1 tenth thick lake ice. Consolidated thick lake ice in Bays de Noc.

Warnings

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 3:00 AM EDT 12 April 2026 Today Tonight and Monday At 3:00 a.m. EDT today ridge located on a line north-south over
eastern Ontario.
By 3:00 a.m. EDT Monday ridge located on a line north-south over
eastern Quebec.

At 3:00 a.m. EDT today low 997 mb located over western North Dakota.
By 3:00 a.m. EDT Monday low 995 mb located over northeastern
Ontario.

Great Lakes - Lake Erie and Lake Ontario Area

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Marine Weather for Canada

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