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Western Lake Superior

Warnings

Forecast

Marine Forecast

Issued 03:00 AM EDT 28 July 2026

Today Tonight and Wednesday.

Wind north 10 knots backing to west 10 near noon then becoming light near midnight. Wind becoming south 10 near noon Wednesday then backing to southeast 10 Wednesday evening.

Waves

Issued 03:00 AM EDT 28 July 2026
Today Tonight and Wednesday. Waves 0.5 metres or less.

Extended Forecast

Issued 03:00 AM EDT 28 July 2026
Thursday Wind light.
Friday Wind light.
Saturday Wind light.

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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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buoy Buoy
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 3:00 AM EDT 28 July 2026 Today Tonight and Wednesday At 3:00 a.m. EDT today low 1001 mb located over Lake Ontario.
By 3:00 a.m. EDT Wednesday low 1000 mb located over northern New
York State.

At 3:00 a.m. EDT today ridge located on a line north-south over
northwestern Ontario.
By 3:00 a.m. EDT Wednesday ridge located on a line
northeast-southwest over Lake Superior.

Great Lakes - Lake Superior Area

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Marine Weather for Canada

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