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Eastern Lake Superior

Warnings

Forecast

Marine Forecast

Issued 03:00 AM EDT 13 May 2025

Today Tonight and Wednesday.

Strong wind warning in effect.

Wind southeast 20 knots diminishing to southeast 15 early this morning then increasing to southeast 20 this evening. Wind diminishing to southeast 15 Wednesday morning.

Fog patches forming near midnight.

Waves

Issued 03:00 AM EDT 13 May 2025
Today Tonight and Wednesday. Waves 1.5 metres subsiding to 0.5 to 1 this morning then building to 1.5 this evening. Waves subsiding to 0.5 to 1 Wednesday morning.

Extended Forecast

Issued 03:00 AM EDT 13 May 2025
Thursday Wind southeast 15 knots increasing to southeast 20 late in the day.
Friday Wind southeast 20 knots.
Saturday Wind south 15 knots diminishing to light.

Ice Forecast*

Issued 12:00 PM EDT 12 May 2025 Today Tonight and Tuesday Ice free.

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

 

[ Canadian Ice Service ]

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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 12 May 2025 Today Tonight and Tuesday

Ice Coverage

Ice free.

Warnings

Warnings (In effect)

Strong wind warning in effect

Eastern Lake Superior

Issued 03:00 AM EDT 13 May 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 3:00 AM EDT 13 May 2025 Today Tonight and Wednesday At 3:00 a.m. EDT today departing ridge located on a line north-south
over Quebec.

At 3:00 a.m. EDT today trough located on a line northeast-southwest
over Manitoba.
By 3:00 a.m. EDT Wednesday trough located on a line
northeast-southwest over the Ontario - Manitoba border.

Great Lakes - Lake Superior Area

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Marine Weather for Canada

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