Western Lake Superior, Canada Marine Forecast, Warnings and Alerts

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Western Lake Superior

Marine Forecast

Issued 10:30 AM EDT 09 September 2026

Today Tonight and Thursday.

Strong wind warning in effect.

Wind west 25 knots veering to northwest 20 this evening then diminishing to northwest 15 early Thursday morning. Wind diminishing to variable 10 near noon Thursday then increasing to southwest 15 Thursday afternoon.

Scattered showers this afternoon and this evening.

Winds

Issued 10:30 AM EDT 09 September 2026

Today Tonight and Thursday. Strong wind warning in effect. Wind west 25 knots veering to northwest 20 this evening then diminishing to northwest 15 early Thursday morning. Wind diminishing to variable 10 near noon Thursday then increasing to southwest 15 Thursday afternoon.

Waves

Issued 10:30 AM EDT 09 September 2026

Today Tonight and Thursday. Waves 1.5 metres building to 2 near noon then subsiding to 1 to 1.5 near midnight. Waves subsiding to 0.5 to 1 Thursday morning.

Weather & Visibility

Issued 10:30 AM EDT 09 September 2026

Today Tonight and Thursday. Scattered showers this afternoon and this evening.

Ice Forecasts

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

Warnings (In effect)

Strong wind warning in effect

Western Lake Superior

Issued 10:30 AM EDT 09 September 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.

Technical Marine Synopsis

Issued 10:30 AM EDT 9 September 2026 Today Tonight and Thursday At 10:30 a.m. EDT today departing ridge located on a line
northeast-southwest over the Gulf of St. Lawrence.

At 10:30 a.m. EDT today low 986 mb located over southern Hudson Bay.
By 10:30 a.m. EDT Thursday low 982 mb located east of Hudson Bay.

At 10:30 a.m. EDT today cold front from low located on a line
northeast-southwest over eastern Lake Superior.
By 10:30 a.m. EDT Thursday cold front from low located on a line
northeast-southwest over New England.

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