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Northern Lake Huron

Warnings

Forecast

Marine Forecast

Issued 10:30 AM EDT 18 May 2026

Today Tonight and Tuesday.

Strong wind warning in effect.

Wind south 20 knots diminishing to south 15 early this evening then increasing to southwest 25 Tuesday morning. Wind veering to west 20 Tuesday evening.

Scattered showers this afternoon tonight and Tuesday with a risk of thunderstorms. Fog patches forming early this evening and dissipating Tuesday evening.

Waves

Issued 03:00 AM EDT 18 May 2026
Today Tonight and Tuesday. Waves 1 to 1.5 metres building to 2 this morning then subsiding to 0.5 to 1 this evening. Waves building to 1 to 1.5 near noon Tuesday.

Extended Forecast

Issued 03:00 AM EDT 18 May 2026
Wednesday Wind northwest 25 knots.
Thursday Wind north 15 knots diminishing to light.
Friday Wind east 15 knots.

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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

Lake Huron

Issued 12:00 PM EDT 17 May 2026 Forecasts have ended for the season.

Ice Forecasts

Lake Michigan

Issued 12:00 PM EDT 17 May 2026 Forecasts have ended for the season.
Warnings

Warnings (In effect)

Strong wind warning in effect

Northern Lake Huron

Issued 10:30 AM EDT 18 May 2026

'Strong' winds of 20 to 33 knots are 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 10:30 AM EDT 18 May 2026 Today Tonight and Tuesday At 10:30 a.m. EDT today low 1004 mb located over western Wisconsin.
By 10:30 a.m. EDT Tuesday departing low 1004 mb located over
northeastern Ontario.

At 10:30 a.m. EDT today low 1001 mb located over Colorado.
By 10:30 a.m. EDT Tuesday cold front located on a line north-south
over Wisconsin.

Great Lakes - Lake Erie and Lake Ontario Area

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Marine Weather for Canada

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