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Western Lake Superior

Warnings

Forecast

Marine Forecast

Issued 06:30 PM EDT 10 June 2026

Tonight and Thursday.

Strong wind warning in effect.

Wind east 15 knots veering to southeast 15 near midnight then increasing to southwest 20 late overnight. Wind diminishing to southwest 15 near noon Thursday.

Showers ending overnight with a risk of thunderstorms. Showers Thursday evening. Fog patches dissipating near noon Thursday.

Waves

Issued 06:30 PM EDT 10 June 2026
Tonight and Thursday. Waves 0.5 to 1 metre building to 1 to 1.5 early Thursday morning.

Extended Forecast

Issued 06:30 PM EDT 10 June 2026
Friday Wind southwest 20 knots.
Saturday Wind southwest 15 to 20 knots veering to northwest 15.
Sunday Wind northwest 15 knots diminishing to light late in the day.

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

Warnings (In effect)

Strong wind warning in effect

Western Lake Superior

Issued 6:30 PM EDT 10 June 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.

Synopsis

Technical Marine Synopsis

Issued 6:30 PM EDT 10 June 2026 Tonight and Thursday At 6:30 p.m. EDT tonight low 994 mb located northeast of Lake
Winnipeg.
By 6:30 p.m. EDT Thursday departing low 982 mb located over
southwestern Hudson Bay.

At 6:30 p.m. EDT tonight quasi-stationary ridge located over
Nebraska.

Great Lakes - Lake Superior Area

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Marine Weather for Canada

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