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Eastern Lake Superior

Warnings

Forecast

Marine Forecast

Issued 03:00 AM EDT 31 October 2026

Today Tonight and Sunday.

Wind west 15 knots diminishing to southwest 10 this morning then backing to south 10 early this evening. Wind increasing to south 15 near midnight then diminishing to southwest 10 near noon Sunday.

Periods of drizzle and fog patches overnight and Sunday.

Waves

Issued 03:00 AM EDT 31 October 2026
Today Tonight and Sunday. Waves 0.5 to 1 metre subsiding to 0.5 or less near noon then building to 0.5 to 1 overnight. Waves subsiding to 0.5 or less Sunday afternoon.

Extended Forecast

Issued 03:00 AM EDT 31 October 2026
Monday Wind light becoming southeast 15 knots late in the day.
Tuesday Wind southeast 15 knots.
Wednesday Wind southeast 15 knots increasing to southeast 20.

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Map of Great Lakes - Lake Superior marine weather areas Wawa Airport Sault Ste. Marie Airport Little Flatland Island Welcome Island Thunder Bay Airport Pukaskwa National Park Caribou Island Armstrong Airport Royal Island Marathon Airport Kenora Airport Slate Island - 45136 Lake Of the Woods - 45148
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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

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 3:00 AM EDT 31 October 2026 Today Tonight and Sunday At 3:00 a.m. EDT today high 1031 mb located over Michigan.
By 3:00 a.m. EST Sunday high 1035 mb located over New York State.

Great Lakes - Lake Superior Area

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