Ice Forecasts

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

Watches (In effect)

Squall watch in effect

Western Lake Superior

Issued 6:05 PM EDT 04 June 2026 Conditions are favourable for the development of squalls with wind gusts up to 45 knots.

Thunderstorms are expected to track eastward into the area this evening.

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.

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Technical Marine Synopsis

Issued 6:30 PM EDT 4 June 2026 Tonight and Friday At 6:30 p.m. EDT tonight ridge located from James Bay to Lake Erie.
By 6:30 p.m. EDT Friday ridge located on a line northwest-southeast
over central Quebec.

At 6:30 p.m. EDT tonight low 1007 mb located over Lake of the Woods.
By 6:30 p.m. EDT Friday low 1003 mb located north of Lake Superior.