Ice Forecasts

Issued 11:00 AM EDT 30 July 2026 Today Tonight and Friday

Watches (In effect)

Squall watch in effect

James Bay - northern half

Issued 9:29 PM EDT 30 July 2026 A low pressure system over southern Hudson Bay is combining with an unstable environment creating favourable conditions for the development of severe thunderstorms.

These thunderstorms will be capable of producing squalls with gusts up to 40 kts, frequent lightning, hail and poor visibility.

Poor to very poor visibility may contribute to voyage delays and make marine navigation hazardous. 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. 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 4:45 PM EDT 30 July 2026 Tonight and Friday At 0000 UTC Friday weakening low 996 mb located at 58N 83W.
By 1800 UTC Friday low 1003 mb located at 60N 71W.

At 0000 UTC Friday weakening trough located near Foxe Basin.