Eastern Lake Superior

Forecast

Marine Forecast

Issued 03:00 AM EDT 23 October 2017

Today Tonight and Tuesday.

Storm warning in effect.

Wind southwest 15 knots backing to south 15 this morning then increasing to northeast 20 this evening. Wind increasing to northeast 35 overnight and to northeast 50 Tuesday morning. Wind diminishing to northeast 40 Tuesday afternoon.

Rain at times heavy beginning near midnight changing to rain near noon Tuesday.

Waves

Issued 03:00 AM EDT 23 October 2017
Today Tonight and Tuesday. Waves one metre building to 2 overnight and to 4 Tuesday morning. Waves building to 5 near noon Tuesday.

Extended Forecast

Issued 03:00 AM EDT 23 October 2017
Wednesday Wind north 30 knots diminishing to north 20 in the morning.
Thursday Wind light increasing to northeast 30 knots late in the day.
Friday Wind northeast 30 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 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 Kenora Airport
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Ice Conditions

*Ice Forecast and Warnings also apply to U.S. waters

Ice Forecasts

Issued 12:00 PM EDT 27 April 2017 Forecasts have ended for the season.
Warnings

Warnings (In effect)

Storm warning in effect

Eastern Lake Superior

Issued 03:00 AM EDT 23 October 2017

'Storm' force winds of 48 to 63 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 3:00 AM EDT 23 October 2017 Today Tonight and Tuesday At 3:00 a.m. EDT today low 1003 mb located over southern Manitoba.
By 2:00 p.m. EDT today dissipating low 1004 mb located over
northern Minnesota.

At 3:00 a.m. EDT today low 1008 mb located over southwestern
Indiana.
By 3:00 a.m. EDT Tuesday approaching low 985 mb located over
central Michigan.

At 3:00 a.m. EDT today cold front located on a line
northeast-southwest over North Channel.
By 8:00 p.m. EDT tonight departing cold front located on a line
northeast-southwest over northern Labrador.

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Summer 2017: Significant weather across Canada

By analyzing weather events, ECCC is collecting more information as to how our climate is changing.

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