Ice Forecasts

Lake Huron

Issued 12:00 PM EDT 16 May 2025 Forecasts have ended for the season.

Ice Forecasts

Lake Michigan

Issued 12:00 PM EDT 16 May 2025 Forecasts have ended for the season.

Warnings (In effect)

Strong wind warning in effect

Southern Lake Huron

Issued 10:30 AM EDT 27 June 2025

'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 or Weatheradio stations.

Watches (In effect)

Squall watch in effect

Southern Lake Huron

Issued 11:21 AM EDT 27 June 2025 Conditions are favourable for the development of squalls with wind gusts up to 55 knots, frequent lightning and poor to very poor visibility in thunderstorms heavy at times.

Severe thunderstorms are expected to develop along a cold front late this afternoon into 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 10:30 AM EDT 27 June 2025 Today Tonight and Saturday At 10:30 a.m. EDT today low 1006 mb located over eastern Lake
Superior.
By 10:30 a.m. EDT Saturday low 1004 mb located over western Quebec.

By 10:30 a.m. EDT Saturday approaching ridge located on a line
north-south over Wisconsin.