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Southern Lake Huron

Warnings

Forecast

Marine Forecast

Issued 03:00 AM EDT 19 April 2026

Today Tonight and Monday.

Wind west 10 knots increasing to west 15 this morning then veering to northwest 20 this afternoon. Wind increasing to northwest 25 early this evening then diminishing to north 15 overnight. Wind diminishing to north 10 Monday morning then becoming light Monday afternoon. Wind becoming south 15 Monday evening.

Scattered showers or scattered flurries becoming scattered flurries this evening and ending Monday morning.

Waves

Issued 03:00 AM EDT 19 April 2026
Today Tonight and Monday. Waves 0.5 metres or less building to 0.5 to 1 near noon and to 1 to 1.5 early this evening. Waves building to 2 late this evening then subsiding to 1 to 1.5 overnight and to 0.5 or less near noon Monday.

Extended Forecast

Issued 03:00 AM EDT 19 April 2026
Tuesday Wind south 25 knots diminishing to south 15 late in the day.
Wednesday Wind light.
Thursday Wind light becoming southeast 15 knots.

Ice Forecast*

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

Ice Coverage

Ice free.

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 3:00 AM EDT 19 April 2026 Today Tonight and Monday At 3:00 a.m. EDT today low 982 mb located over eastern Hudson Bay.
By 3:00 a.m. EDT Monday departing low 999 mb located over northern
Quebec.

At 3:00 a.m. EDT today departing cold front located on a line
north-south over the St. Lawrence River.

At 3:00 a.m. EDT today high 1024 mb located over southern Manitoba.
By 3:00 a.m. EDT Monday high 1029 mb located over Wisconsin.

Great Lakes - Lake Erie and Lake Ontario Area

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Marine Weather for Canada

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