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Eastern Lake Superior

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Forecast

Marine Forecast

Issued 10:30 AM EDT 22 September 2021

Today Tonight and Thursday.

Strong wind warning in effect.

Wind northeast 20 knots except northeast 10 near the west end today and tonight. Wind diminishing to north 15 Thursday evening.

Showers Thursday evening.

Waves

Issued 10:30 AM EDT 22 September 2021
Today Tonight and Thursday. Waves 1 metre building to 1.5 this afternoon then subsiding to 0.5 to 1 Thursday evening.

Extended Forecast

Issued 03:00 AM EDT 22 September 2021
Friday Wind light becoming west 15 knots in the afternoon then becoming southeast 15 late in the day.
Saturday Wind northwest 25 knots.
Sunday Wind northwest 20 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

Eastern Lake Superior

Issued 10:30 AM EDT 22 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 10:30 AM EDT 22 September 2021 Today Tonight and Thursday At 10:30 a.m. EDT today deepening low 1009 mb located over
southern Ohio.
By 10:30 a.m. EDT Thursday low 1001 mb located over northwestern
Ohio.

At 10:30 a.m. EDT today quasi-stationary trough from low located
on a line northeast-southwest over southern Ontario.

At 10:30 a.m. EDT today quasi-stationary ridge located on a line
northeast-southwest over Lake Superior.

Great Lakes - Lake Superior Area

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Marine Weather for Canada

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