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Western Lake Superior

Forecast

Marine Forecast

Issued 03:00 AM EDT 13 April 2021

Today Tonight and Wednesday.

Wind variable 10 knots increasing to southwest 15 this morning then diminishing to light early this evening. Wind increasing to north 15 Wednesday morning and to north 20 Wednesday evening.

Showers ending near midnight. Fog patches dissipating this evening.

Waves

Issued 03:00 AM EDT 13 April 2021
Today Tonight and Wednesday. Waves one half metre or less building to one half to one metre near noon then subsiding to less than one half metre this evening. Waves building to one half to one metre near noon Wednesday and to one and one half metres Wednesday evening.

Extended Forecast

Issued 03:00 AM EDT 13 April 2021
Thursday Wind north 25 knots.
Friday Wind north 20 knots.
Saturday Wind north 20 knots.

Ice Forecast*

Issued 12:00 PM EDT 12 April 2021 Today Tonight and Tuesday Open water except CONSOLIDATED rotten thick lake ice in Black Bay and Nipigon Bay and and Thunder Bay.

*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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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 12 April 2021 Today Tonight and Tuesday

Ice Coverage

Open water except CONSOLIDATED rotten thick lake ice in Black Bay
and Nipigon Bay and and Thunder Bay.

Warnings

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 3:00 AM EDT 13 April 2021 Today Tonight and Wednesday At 3:00 a.m. EDT today low 1007 mb located over western Lake
Superior.
By 3:00 a.m. EDT Wednesday weakening low 1016 mb located near
Thunder Bay.

At 3:00 a.m. EDT today ridge located on a line northeast-southwest
over northern Saskatchewan.
By 3:00 a.m. EDT Wednesday ridge located on a line
northeast-southwest over northern Manitoba.

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