Eastern Lake Superior

Forecast

Marine Forecast

Issued 06:30 PM EDT 19 September 2017

Tonight and Wednesday.

Strong wind warning in effect.

Wind east 10 knots increasing to east 15 this evening and to southeast 20 late overnight. Wind diminishing to southwest 15 Wednesday evening.

A few showers beginning near noon Wednesday and ending Wednesday evening with a risk of thunderstorms.

Waves

Issued 06:30 PM EDT 19 September 2017
Tonight and Wednesday. Waves one half metre building to one late overnight.

Extended Forecast

Issued 06:30 PM EDT 19 September 2017
Thursday Wind southeast 15 knots diminishing to light in the afternoon.
Friday Wind light becoming southeast 15 knots.
Saturday Wind southeast 20 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

Eastern Lake Superior

Issued 6:30 PM EDT 19 September 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 19 September 2017 Tonight and Wednesday At 6:30 p.m. EDT tonight dissipating cold front located over
southern Ontario.

At 6:30 p.m. EDT tonight ridge located on a line northeast-southwest
over northeastern Ontario.
By 6:30 p.m. EDT Wednesday ridge located on a line
northeast-southwest over Lake Ontario.

At 6:30 p.m. EDT tonight trough located from Alberta to North
Dakota.
By 6:30 p.m. EDT Wednesday trough located on a line north-south
over eastern Lake Superior.

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