Eastern Lake Superior, Canada Marine Forecast, Warnings and Alerts

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Eastern 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 increasing to west 30 this afternoon then veering to northwest 25 this evening. Wind diminishing to northwest 15 to 20 early Thursday morning and to northwest 10 to 15 late Thursday morning. Wind backing to west 10 to 15 Thursday afternoon then becoming variable 10 Thursday evening.

Winds

Issued 10:30 AM EDT 09 September 2026

Today Tonight and Thursday. Strong wind warning in effect. Wind west 25 knots increasing to west 30 this afternoon then veering to northwest 25 this evening. Wind diminishing to northwest 15 to 20 early Thursday morning and to northwest 10 to 15 late Thursday morning. Wind backing to west 10 to 15 Thursday afternoon then becoming variable 10 Thursday evening.

Waves

Issued 10:30 AM EDT 09 September 2026

Today Tonight and Thursday. Waves 1.5 to 2 metres building to 2 to 3 this afternoon then subsiding to 2 this evening. Waves subsiding to 1 to 1.5 early Thursday morning and to 0.5 to 1 near noon Thursday.

Ice Forecasts

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

Warnings (In effect)

Strong wind warning in effect

Eastern 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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