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Northern Lake Huron

Warnings

Forecast

Marine Forecast

Issued 03:00 AM EDT 18 July 2026

Today Tonight and Sunday.

Strong wind warning in effect.

Wind southwest 20 knots veering to northwest 25 this morning then to north 20 early this evening. Wind diminishing to north 15 near midnight and to north 10 Sunday morning. Wind becoming southwest 10 near noon Sunday.

Scattered showers ending near noon with a risk of thunderstorms. Smoke. Visibility as low as 1 mile in smoke.

Waves

Issued 03:00 AM EDT 18 July 2026
Today Tonight and Sunday. Waves 1 to 1.5 metres building to 2 near noon then subsiding to 1 to 1.5 this evening. Waves subsiding to 0.5 to 1 overnight and to 0.5 or less Sunday morning.

Extended Forecast

Issued 03:00 AM EDT 18 July 2026
Monday Wind southwest 15 knots increasing to southwest 20 in the afternoon.
Tuesday Wind southwest 20 knots veering to northwest 25.
Wednesday Wind northwest 20 knots.

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Map of Great Lakes - Lake Huron marine weather areas Wiarton Airport Western Islands Cove Island Goderich Lake Simcoe Regional Airport Vineland Station Parry Sound Harbour Sarnia Chris Hadfield Airport Tobermory Muskoka Airport Harrow AAFC Long Point Port Weller St. Catharines / Niagara District Airport Lagoon City Southeast Shoal Burlington Lift Bridge Welland-Pelham Windsor Airport Port Colborne Erieau Peterborough Municipal Airport CFB Trenton Toronto City Centre Airport Point Petre Oshawa Executive Airport Hamilton Munro Int'l Airport Point Pelee Cobourg Port Colborne - 45142 North Channel - 45154 Ajax - 45159 Lake Nipissing - 45152 Sault Ste. Marie Airport Killarney Lake Simcoe - 45151 Greater Sudbury Airport South Lake Huron - 45149 Lake St Clair - 45147 North Bay Airport South Georgian Bay - 45143 Gore Bay-Manitoulin Airport Grimsby - 45139 Georgian Bay - 45137 Great Duck Island Collingwood Kingston Airport Grenadier Island Brockville Prince Edward Point - 45135 Port Stanley - 45132
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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 03:00 AM EDT 18 July 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

Northern Lake Huron

Issued 02:56 AM EDT 18 July 2026 Conditions are favourable for the development of squalls with wind gusts up to 35 knots.

Thunderstorms producing strong wind gusts could move over the area overnight.

Mariners are advised to prepare for potential squalls. Vulnerable vessels are most at risk and should seek safe harbour if underway. Consider delaying or postponing travel in areas under the Squall Watch.

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 3:00 AM EDT 18 July 2026 Today Tonight and Sunday At 3:00 a.m. EDT today departing ridge located over Quebec.

At 3:00 a.m. EDT today low 1006 mb located over Lake Superior.
By 3:00 a.m. EDT Sunday low 992 mb located over eastern Quebec.

At 3:00 a.m. EDT today ridge located on a line north-south over
Saskatchewan.
By 3:00 a.m. EDT Sunday ridge located on a line north-south over
northern Ontario.

Great Lakes - Lake Huron Area

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Marine Weather for Canada

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