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Northern Lake Huron

Forecast

Marine Forecast

Issued 10:30 AM EDT 17 April 2026

Today Tonight and Saturday.

Wind southeast 10 knots increasing to southeast 15 early this evening and to south 25 near midnight. Wind increasing to northwest 30 near noon Saturday then diminishing to northwest 20 Saturday evening.

Showers Saturday with a risk of thunderstorms becoming scattered flurries or scattered showers. Fog patches dissipating Saturday afternoon.

Waves

Issued 10:30 AM EDT 17 April 2026
Today Tonight and Saturday. Waves 0.5 metres or less building to 0.5 to 1 this evening and to 1.5 late overnight. Waves building to 2 to 3 Saturday morning then subsiding to 1.5 Saturday evening.

Extended Forecast

Issued 03:00 AM EDT 17 April 2026
Sunday Wind northwest 20 knots increasing to northwest 25 in the afternoon.
Monday Wind northwest 20 knots diminishing to light late in the day.
Tuesday Wind south 25 knots.

Ice Forecast*

Issued 12:00 PM EDT 17 April 2026 Today Tonight and Saturday 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 17 April 2026 Today Tonight and Saturday

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 17 April 2026 Today Tonight and Saturday

Ice Coverage

Open water except 3 tenths thick lake ice in and near the Straits of
Mackinac.

Ice Forecasts

Southern Lake Michigan

Issued 12:00 PM EDT 17 April 2026 Today Tonight and Saturday

Ice Coverage

Ice free.

Ice Forecasts

Green Bay

Issued 12:00 PM EDT 17 April 2026 Today Tonight and Saturday

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 10:30 AM EDT 17 April 2026 Today Tonight and Saturday At 10:30 a.m. EDT today departing trough located on a line
northeast-southwest over New England.

At 10:30 a.m. EDT today ridge located on a line north-south over
southern Ontario.
By 10:30 a.m. EDT Saturday ridge located on a line
northeast-southwest over New England.

At 10:30 a.m. EDT today low 998 mb located over western Iowa.
By 10:30 a.m. EDT Saturday low 990 mb located over James Bay.

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