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Eastern Lake Superior

Warnings

Forecast

Marine Forecast

Issued 03:00 AM EDT 10 May 2026

Today Tonight and Monday.

Strong wind warning in effect.

Wind northwest 15 knots increasing to northwest 20 this afternoon then diminishing to northwest 15 this evening. Wind diminishing to northwest 10 overnight then becoming light Monday morning.

Scattered showers or scattered flurries today and this evening.

Waves

Issued 03:00 AM EDT 10 May 2026
Today Tonight and Monday. Waves 1 metre subsiding to 0.5 or less Monday morning.

Extended Forecast

Issued 03:00 AM EDT 10 May 2026
Tuesday Wind southeast 15 knots increasing to southeast 25 in the afternoon then diminishing to northeast 15 late in the day.
Wednesday Wind northeast 15 knots backing to northwest 20.
Thursday Wind light increasing to southeast 20 knots late in the day.

Ice Forecast*

Issued 12:00 PM EDT 9 May 2026 Today Tonight and Sunday 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 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 9 May 2026 Today Tonight and Sunday

Ice Coverage

Ice free.

Warnings

Warnings (In effect)

Strong wind warning in effect

Eastern Lake Superior

Issued 03:00 AM EDT 10 May 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 or Weatheradio stations.

Synopsis

Technical Marine Synopsis

Issued 3:00 AM EDT 10 May 2026 Today Tonight and Monday At 3:00 a.m. EDT today trough from 994 mb low located on a line
north-south over eastern Ontario.
By 3:00 a.m. EDT Monday trough from 1001 mb low located over
New Brunswick.

At 3:00 a.m. EDT today ridge located on a line north-south over
Saskatchewan.
By 3:00 a.m. EDT Monday ridge located on a line north-south over
northwestern Ontario.

Great Lakes - Lake Superior Area

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Marine Weather for Canada

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