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Eastern Lake Superior

Forecast

Marine Forecast

Issued 10:30 AM EDT 19 June 2021

Today Tonight and Sunday.

Wind northwest 10 knots becoming light early this evening then becoming variable 10 Sunday evening.

Scattered showers Sunday late in the day.

Waves

Issued 10:30 AM EDT 19 June 2021
Today Tonight and Sunday. Waves one half to one metre subsiding to one half metre or less near noon and to less than one half metre this evening.

Extended Forecast

Issued 03:00 AM EDT 19 June 2021
Monday Wind light increasing to northwest 25 knots in the morning then diminishing to northwest 15 late in the day.
Tuesday Wind northwest 15 knots diminishing to light.
Wednesday Wind light becoming southwest 15 knots late in the day.

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Weather Conditions

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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

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 10:30 AM EDT 19 June 2021 Today Tonight and Sunday At 10:30 a.m. EDT today trough located on a line northeast-southwest
over Lake Huron.
By 10:30 a.m. EDT Sunday trough located on a line
northeast-southwest over New Brunswick.

At 10:30 a.m. EDT today ridge located on a line northeast-southwest
over Lake of the Woods.
By 10:30 a.m. EDT Sunday ridge located on a line northeast-southwest
over Lake Huron.

By 10:30 a.m. EDT Sunday trough located on a line
northeast-southwest over northern Ontario.

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