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Southern Lake Huron

Warnings

Forecast

Marine Forecast

Issued 06:30 PM EDT 07 October 2026

Tonight and Thursday.

Strong wind warning in effect.

Wind northwest 15 knots backing to west 15 this evening then increasing to northwest 20 late overnight. Wind diminishing to west 15 Thursday morning then veering to northwest 15 Thursday afternoon.

Scattered showers overnight and Thursday. Risk of thunderstorms overnight.

Waves

Issued 06:30 PM EDT 07 October 2026
Tonight and Thursday. Waves 1 metre.

Extended Forecast

Issued 06:30 PM EDT 07 October 2026
Friday Wind northwest 20 knots diminishing to light late in the day.
Saturday Wind light increasing to south 20 knots.
Sunday Wind southwest 20 knots.

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Map of Great Lakes - Lake Erie and Lake Ontario marine weather areas Harrow AAFC Hamilton Munro Int'l Airport CFB Trenton Erieau Toronto City Centre Airport Point Pelee Peterborough Municipal Airport Burlington Lift Bridge Point Petre Cobourg Oshawa Executive Airport South Lake Huron - 45149 Port Colborne Brockville Gore Bay-Manitoulin Airport North Bay Airport Greater Sudbury Airport Killarney Sault Ste. Marie Airport Ajax - 45159 North Channel - 45154 Lake Nipissing - 45152 Lake Simcoe - 45151 Windsor Airport Lake St Clair - 45147 South Georgian Bay - 45143 Port Colborne - 45142 Grimsby - 45139 Georgian Bay - 45137 Prince Edward Point - 45135 Port Stanley - 45132 Welland-Pelham Grenadier Island Kingston Airport Collingwood Lagoon City Muskoka Airport Parry Sound Harbour Lake Simcoe Regional Airport Wiarton Airport Western Islands Sarnia Chris Hadfield Airport Vineland Station Southeast Shoal St. Catharines / Niagara District Airport Goderich Port Weller Long Point Tobermory
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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

Southern Lake Huron

Issued 6:30 PM EDT 07 October 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.

Watches (In effect)

Squall watch in effect

Southern Lake Huron

Issued 6:07 PM EDT 07 October 2026 Conditions are favourable for the development of squalls tonight with wind gusts up to 40 knots and small hail.

Mariners are advised to prepare for potential squalls. Vulnerable vessels are most at risk and should seek safe harbour if underway.

Please continue to monitor alerts and forecasts issued by Environment Canada. For more information monitor Canadian Coast Guard radio or Weatheradio stations.

Synopsis

Technical Marine Synopsis

Issued 6:30 PM EDT 7 October 2026 Tonight and Thursday At 6:30 p.m. EDT tonight quasi-stationary low 994 mb located near
James Bay.

At 6:30 p.m. EDT tonight cold front from low located on a line
northeast-southwest over southern Ontario.
By 6:30 p.m. EDT Thursday cold front from low located near the
Maritimes.

Great Lakes - Lake Erie and Lake Ontario Area

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Marine Weather for Canada

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