Western Lake Superior

Forecast

Marine Forecast

Issued 06:30 PM EDT 25 June 2017

Tonight and Monday.

Strong wind warning in effect.

Wind northeast 10 knots becoming light near midnight then becoming west 10 near noon Monday. Wind increasing to southwest 20 Monday afternoon.

Chance of showers early this evening and beginning Monday evening.

Waves

Issued 06:30 PM EDT 25 June 2017
Tonight and Monday. Waves one half metre building to one Monday evening.

Extended Forecast

Issued 06:30 PM EDT 25 June 2017
Tuesday Wind light becoming southwest 15 knots in the afternoon.
Wednesday Wind southwest 15 knots backing to southeast 15.
Thursday Wind east 25 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)

Strong wind warning in effect

Western Lake Superior

Issued 6:30 PM EDT 25 June 2017

'Strong' winds of 20 to 33 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 6:30 PM EDT 25 June 2017 Tonight and Monday At 6:30 p.m. EDT tonight quasi-stationary trough located on a line
east-west over North Channel.

At 6:30 p.m. EDT tonight ridge located on a line northwest-southeast
over Saskatchewan.
By 6:30 p.m. EDT Monday ridge located on a line northwest-southeast
over Minnesota.

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