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Eastern Lake Superior

Warnings

Forecast

Marine Forecast

Issued 06:30 PM EST 07 November 2025

Tonight and Saturday.

Strong wind warning in effect.

Wind north 30 knots diminishing to north 20 this evening and to north 10 late overnight. Wind becoming variable 10 Saturday morning then increasing to northeast 15 Saturday evening.

Scattered flurries overnight and Saturday.

Waves

Issued 06:30 PM EST 07 November 2025
Tonight and Saturday. Waves 2 to 3 metres subsiding to 1 to 1.5 near midnight and to 0.5 or less early Saturday morning. Waves building to 0.5 to 1 Saturday evening.

Extended Forecast

Issued 06:30 PM EST 07 November 2025
Sunday Wind northeast 15 knots backing to north 20 late in the day.
Monday Wind north 20 knots diminishing to light late in the day.
Tuesday Wind southwest 20 knots.

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

*Ice Forecast and Warnings also apply to U.S. waters

Ice Forecasts

Issued 12:00 PM EDT 16 May 2025 Forecasts have ended for the season.
Warnings

Warnings (In effect)

Strong wind warning in effect

Eastern Lake Superior

Issued 6:30 PM EST 07 November 2025

'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 or Weatheradio stations.

Synopsis

Technical Marine Synopsis

Issued 6:30 PM EST 7 November 2025 Tonight and Saturday At 6:30 p.m. EST tonight low 991 mb located northeast of Lake
Nipissing.
By 6:30 p.m. EST Saturday departing low 1002 mb located over the
Gulf of St. Lawrence.

At 6:30 p.m. EST tonight ridge located on a line north-south over
northern Saskatchewan.
By 6:30 p.m. EST Saturday ridge located on a line east-west over
Lake Nipigon.

Great Lakes - Lake Superior Area

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Marine Weather for Canada

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