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

Northern Lake Huron

Issued 10:30 AM EDT 16 August 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

Northern Lake Huron

Issued 11:12 AM EDT 16 August 2025 Conditions are favourable for the development of squalls with wind gusts up to 50 knots, frequent lightning, hail and poor to very poor visibility in thunderstorms heavy at times.

Thunderstorms with squalls to 50 knots are quite possible beginning near 2.00 P.M. this afternoon and lasting into the early evening.

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 10:30 AM EDT 16 August 2025 Today Tonight and Sunday At 10:30 a.m. EDT today departing ridge located on a line
northeast-southwest over Maine.

At 10:30 a.m. EDT today cold front located on a line
northeast-southwest over North Channel.
By 10:30 a.m. EDT Sunday cold front located on a line
northeast-southwest over southern Ontario.

At 10:30 a.m. EDT today ridge located on a line northwest-southeast
over northwestern Ontario.
By 10:30 a.m. EDT Sunday ridge located on a line northwest-southeast
over northern Ontario.