Western Lake Superior

Forecast

Marine Forecast

Issued 06:30 PM EDT 27 June 2017

Tonight and Wednesday.

Strong wind warning in effect.

Wind southwest 15 knots diminishing to southwest 10 late overnight then increasing to southeast 15 near noon Wednesday. Wind increasing to southeast 20 Wednesday evening.

Rain beginning Wednesday evening.

Waves

Issued 06:30 PM EDT 27 June 2017
Tonight and Wednesday. Waves one half to one metre.

Extended Forecast

Issued 06:30 PM EDT 27 June 2017
Thursday Wind east 20 knots backing to northeast 25 in the morning then diminishing to northwest 15 late in the day.
Friday Wind northwest 15 knots diminishing to light.
Saturday Wind light.

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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 27 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 27 June 2017 Tonight and Wednesday At 6:30 p.m. EDT tonight departing trough located on a line
north-south over New England.

At 6:30 p.m. EDT tonight ridge located on a line northwest-southeast
over Indiana.
By 6:30 p.m. EDT Wednesday ridge located on a line
northeast-southwest over Virginia.

At 6:30 p.m. EDT tonight low 1006 mb located over northern Ontario.
By 6:30 p.m. EDT Wednesday low 1009 mb located over central Quebec.

At 6:30 p.m. EDT Wednesday approaching low 994 mb located over
Minnesota.

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