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Boreal Community Media

Ships seek shelter from Lake Superior storm.

Apr 11, 2019 02:19PM ● By Editor
Waves on the North Shore of Lake Superior Thursday afternoon.  Photo:  Boreal Community Media

From Boreal Community Media - April 11, 2019

A full nor'easter is in effect and some ships are headed out of harm's way with 13-19 foot waves forecast for the Big Lake on Thursday afternoon.

According the Marine Traffic, the American Century and Rt. Hon. Paul J. Smith have moved to the leeward side of Isle Royale and are staying put.

Ship positions on Thursday afternoon.  Image:

Several other ships are along the Ontario North Shore near Neys and Marathon seeking shelter from the gale force northeast winds.  A gale warning is effect until Friday at 7am with wind speeds expected of up to 36 knots with gusts up to 44 knots.

Snow is also expected to move over Lake Superior as the storm creeps northward on Thursday afternoon and evening.

The Boreal Ship Spotter is always on the Boreal home page during the shipping season at

Nearshore Marine Forecast
National Weather Service Duluth MN
1003 AM CDT Thu Apr 11 2019

For waters within five nautical miles of shore on Lake Superior.         

Waves are the significant wave height - the average of the highest 
1/3 of the wave spectrum. Occasional wave height is the average of 
the highest 1/10 of the wave spectrum.

Grand Portage to Grand Marais MN-
Grand Marais to Taconite Harbor MN-
1003 AM CDT Thu Apr 11 2019


REST OF TODAY...East gales to 40 knots. Slight chance of snow
early in the afternoon. Snow likely late. Waves 8 to 13 feet
building to 11 to 16 feet late. Waves occasionally to 20 feet. 

TONIGHT...East gales to 40 knots. Snow through the night. Light
freezing rain likely after midnight. Waves 13 to 18 feet. Waves
occasionally to 23 feet. 

FRIDAY...Northeast wind up to 30 knots easing to 5 knots with
gusts to around 20 knots. Snow, rain and light freezing rain
likely in the morning, then chance of rain and snow in the
afternoon. Waves 10 to 15 feet subsiding to 3 to 5 feet. Waves
occasionally to 19 feet. 

FRIDAY NIGHT...West wind 5 to 10 knots. Chance of rain in the
evening. Chance of snow through the night. Waves 2 to 4 feet
subsiding to 1 to 3 feet in the late evening and overnight. 

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