Ice Forecasts

Issued 10:00 AM EDT 19 May 2026 Forecasts have ended for the season.

Warnings (In effect)

Strong wind warning in effect

Tadoussac to Pointe à Michel

Issued 3:00 PM EDT 01 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

Tadoussac to Pointe à Michel

Issued 3:20 PM EDT 01 July 2026 Conditions are favourable for the development of squalls with wind gusts up to 50 knots, frequent lightning and hail.

Severe thunderstorms will develop today. These thunderstorms will generate very strong gusts, large hail and could even produce a tornado.

Large hail can damage vessels and cause injury. Vessels without lightning protection should make their way to shore immediately. 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.

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Technical Marine Synopsis

Issued 3:00 PM EDT 1 July 2026 Tonight and Thursday At 3:00 p.m. EDT today quasi-stationary warm front located from
James Bay to Labrador.

At 3:00 p.m. EDT today flat low located from Cornwall to Québec
city.
By 8:00 p.m. EDT Thursday flat low located from Cornwall to
Anticosti Island.