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Western Lake Superior

Forecast

Marine Forecast

Issued 03:00 AM EST 25 February 2020

Today Tonight and Wednesday.

Wind north 15 knots veering to northeast 15 early this morning then increasing to northeast 20 early this evening. Wind diminishing to northeast 15 Wednesday morning then backing to north 20 Wednesday evening.

Flurries Wednesday. Visibility as low as 1 mile in flurries.

Risk of freezing spray tonight.

Waves

Issued 03:00 AM EST 25 February 2020
Today Tonight and Wednesday. Waves one half to one metre building to one and one half metres this evening then subsiding to one Wednesday morning.

Extended Forecast

Issued 03:00 AM EST 25 February 2020
Thursday Wind north 20 knots backing to northwest 25 in the morning.
Friday Wind northwest 30 knots.
Saturday Wind northwest 25 knots diminishing to northwest 15 late in the day.

Ice Forecast*

Issued 12:00 PM EST 24 February 2020 Today Tonight and Tuesday Open water except 6 tenths thin lake ice along the southern shore. Consolidated thick lake ice in most bays.

*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 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 EST 24 February 2020 Today Tonight and Tuesday

Ice Coverage

Open water except 6 tenths thin lake ice along the southern shore.
Consolidated thick lake ice in most bays.

Warnings

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 3:00 AM EST 25 February 2020 Today Tonight and Wednesday At 3:00 a.m. EST today low 1000 mb located over southern Illinois.
By 3:00 a.m. EST Wednesday low 1008 mb located over Virginia.

At 3:00 a.m. EST today quasi-stationary ridge located on a line
northwest-southeast over northern Ontario.

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