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Eastern Lake Superior

Warnings

Forecast

Marine Forecast

Issued 06:30 PM EDT 06 September 2026

Tonight and Monday.

Wind light becoming southeast 10 knots this evening then increasing to southeast 15 Monday afternoon.

Waves

Issued 06:30 PM EDT 06 September 2026
Tonight and Monday. Waves 0.5 metres or less building to 1 Monday evening.

Extended Forecast

Issued 06:30 PM EDT 06 September 2026
Tuesday Wind southeast 15 knots veering to south 20 in the morning.
Wednesday Wind southwest 20 knots veering to west 25.
Thursday Wind northwest 20 knots diminishing to light late in the day.

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Map of Great Lakes - Lake Superior marine weather areas Royal Island Kenora Airport Sault Ste. Marie Airport Armstrong Airport Caribou Island Marathon Airport Pukaskwa National Park Wawa Airport Thunder Bay Airport Welcome Island Little Flatland Island Slate Island - 45136 Lake Of the Woods - 45148
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land station Land Station
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 6:30 PM EDT 6 September 2026 Tonight and Monday At 6:30 p.m. EDT tonight ridge located on a line northwest-southeast
over Ontario.
By 6:30 p.m. EDT Monday ridge located from Hudson Bay to Lake
Ontario.

At 6:30 p.m. EDT tonight low 1004 mb located over northeastern
Wyoming.
By 6:30 p.m. EDT Monday low 999 mb located over northern North
Dakota.

Great Lakes - Lake Superior Area

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Marine Weather for Canada

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