Western Lake Superior
Forecast
Marine Forecast
Issued 06:30 PM EDT 25 October 2026
Tonight and Monday.
Strong wind warning in effect.
Wind west 20 knots veering to north 20 near midnight then diminishing to north 15 late overnight. Wind diminishing to north 10 Monday morning then veering to northeast 10 Monday evening.
Waves
Issued 06:30 PM EDT 25 October 2026
Tonight and Monday.
Waves 1.5 metres subsiding to 1 early Monday morning and to 0.5
or less near noon Monday.
Extended Forecast
Issued 06:30 PM EDT 25 October 2026
Tuesday
Wind light increasing to southeast 20 knots in
the afternoon.
Wednesday
Wind south 25 knots diminishing to southwest
15.
Thursday
Wind southwest 15 knots veering to northwest
15.
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Weather Conditions
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Ice Conditions
*Ice Forecast and Warnings also apply to U.S. waters
Ice Forecasts
Issued 12:00 PM EDT 17 May 2026 Forecasts have ended for the season.Warnings
Warnings (In effect)
Strong wind warning in effect
Western Lake Superior
Issued 6:30 PM EDT 25 October 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.
Synopsis
Technical Marine Synopsis
Issued 6:30 PM EDT 25 October 2026 Tonight and Monday At 6:30 p.m. EDT tonight departing ridge located on a linenortheast-southwest over the East Coast of the U.S.
At 6:30 p.m. EDT tonight cold front located on a line
northeast-southwest over North Channel.
By 6:30 p.m. EDT Monday cold front located on a line
northeast-southwest over the East Coast of the U.S.
By 10:30 a.m. EDT Monday high 1034 mb located over northwestern
Ontario.
Great Lakes - Lake Superior Area
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