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Western Lake Superior

Forecast

Marine Forecast

Issued 03:00 AM EDT 25 September 2021

Today Tonight and Sunday.

Strong wind warning in effect.

Wind northwest 20 knots diminishing to west 15 early this evening and to northwest 10 near midnight. Wind veering to north 10 Sunday morning.

Showers ending early this morning. Scattered showers this afternoon and this evening.

Waves

Issued 03:00 AM EDT 25 September 2021
Today Tonight and Sunday. Waves 1 to 1.5 metres subsiding to 0.5 to 1 this evening and to 0.5 or less overnight.

Extended Forecast

Issued 03:00 AM EDT 25 September 2021
Monday Wind northwest 15 knots diminishing to light in the morning.
Tuesday Wind light.
Wednesday Wind south 15 knots.

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Map of Great Lakes - Lake Superior marine weather areas Mid Superior - 45001 East Superior - 45004 West Superior - 45006 Slate Island - 45136 Lake Of the Woods - 45148 Kenora Airport Royal Island Armstrong Airport Caribou Island Marathon Airport Pukaskwa National Park Thunder Bay Airport Welcome Island Little Flatland Island Sault Ste. Marie Airport Wawa Airport
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Ice Conditions

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

Ice Forecasts

Issued 12:00 PM EDT 9 May 2021 Forecasts have ended for the season.
Warnings

Warnings (In effect)

Strong wind warning in effect

Western Lake Superior

Issued 03:00 AM EDT 25 September 2021

'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 25 September 2021 Today Tonight and Sunday At 3:00 a.m. EDT today departing ridge located on a line
northeast-southwest over West Virginia.

At 3:00 a.m. EDT today cold front located on a line north-south
over eastern Lake Superior.
By 3:00 a.m. EDT Sunday departing cold front located on a line
north-south over eastern Lake Ontario.

At 3:00 a.m. EDT Sunday approaching ridge located on a line
north-south over Wisconsin.

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