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Southern Lake Huron

Warnings

Forecast

Marine Forecast

Issued 06:30 PM EDT 21 March 2025

Tonight and Saturday.

Wind south 25 knots veering to southwest 20 this evening then increasing to northwest 30 early Saturday morning. Wind diminishing to northwest 20 Saturday afternoon and to northwest 15 Saturday evening.

Showers beginning near midnight changing to flurries Saturday morning and ending near noon Saturday.

Freezing spray warning in effect.

Freezing spray Saturday afternoon.

Waves

Issued 06:30 PM EDT 21 March 2025
Tonight and Saturday. Waves 2 metres subsiding to 1.5 near midnight then building to 3 Saturday morning. Waves subsiding to 1.5 Saturday evening.

Extended Forecast

Issued 06:30 PM EDT 21 March 2025
Sunday Wind light increasing to southeast 20 knots in the afternoon and to southeast 25 late in the day.
Monday Wind southeast 25 knots becoming west 25.
Tuesday Wind northwest 25 knots diminishing to light late in the day.

Ice Forecast*

Issued 12:00 PM EDT 21 March 2025 Today Tonight and Saturday Open water except 2 tenths thick lake ice along parts of the eastern 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 Port Stanley - 45132 Prince Edward Point - 45135 Georgian Bay - 45137 Grimsby - 45139 Port Colborne - 45142 South Georgian Bay - 45143 Lake St Clair - 45147 South Lake Huron - 45149 Lake Simcoe - 45151 Lake Nipissing - 45152 North Channel - 45154 Ajax - 45159 Sault Ste. Marie Airport Killarney Greater Sudbury Airport North Bay Airport Gore Bay-Manitoulin Airport Great Duck Island Brockville Grenadier Island Kingston Airport Collingwood Lagoon City Muskoka Airport Parry Sound Harbour Lake Simcoe Regional Airport Wiarton Airport Western Islands Cove Island Goderich Sarnia Chris Hadfield Airport Tobermory Harrow AAFC Long Point Port Weller St. Catharines / Niagara District Airport Southeast Shoal Vineland Station Welland-Pelham Windsor Airport Port Colborne Erieau Point Pelee Burlington Lift Bridge Cobourg Hamilton Munro Int'l Airport Oshawa Executive Airport Point Petre Toronto City Centre Airport CFB Trenton Peterborough Municipal Airport
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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 21 March 2025 Today Tonight and Saturday

Ice Coverage

Open water except 2 tenths thick lake ice along parts of the eastern
shore.

Ice Forecasts

Northern Lake Michigan

Issued 12:00 PM EDT 21 March 2025 Today Tonight and Saturday

Ice Coverage

Open water except 8 tenths thick lake ice east of Beaver Island.

Ice Forecasts

Southern Lake Michigan

Issued 12:00 PM EDT 21 March 2025 Today Tonight and Saturday

Ice Coverage

Open water.

Ice Forecasts

Green Bay

Issued 12:00 PM EDT 21 March 2025 Today Tonight and Saturday

Ice Coverage

Open water except 2 tenths thick lake ice along the shores.
Consolidated thick lake ice in Bays de Noc.

Warnings

Warnings (In effect)

Freezing spray warning in effect

Southern Lake Huron

Issued 6:30 PM EDT 21 March 2025

Moderate or severe freezing spray is occurring or expected to occur in this marine area. Please refer to the latest marine forecasts for further details and continue to monitor the situation through Canadian Coast Guard radio or Weatheradio stations.

Synopsis

Technical Marine Synopsis

Issued 6:30 PM EDT 21 March 2025 Tonight and Saturday At 6:30 p.m. EDT tonight ridge located on a line northeast-southwest
over eastern Ontario.
By 6:30 p.m. EDT Saturday ridge located on a line north-south over
Nova Scotia.

At 6:30 p.m. EDT tonight cold front located from James Bay to
Lake Superior.
By 6:30 p.m. EDT Saturday cold front located on a line
northeast-southwest over New York State.

At 6:30 p.m. EDT tonight ridge located on a line north-south
over Manitoba.
By 6:30 p.m. EDT Saturday ridge located on a line north-south over
eastern Lake Superior.

Great Lakes - Lake Erie and Lake Ontario Area

Another Region

Marine Weather for Canada

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