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Western Lake Superior

Forecast

Marine Forecast

Issued 10:30 AM EDT 11 August 2020

Today Tonight and Wednesday.

Strong wind warning in effect.

Wind southwest 15 knots increasing to southwest 20 near noon then diminishing to west 15 this evening. Wind diminishing to northwest 10 late overnight then becoming light Wednesday morning.

Waves

Issued 10:30 AM EDT 11 August 2020
Today Tonight and Wednesday. Waves one metre building to one and one half metres this afternoon then subsiding to one near midnight. Waves subsiding to one half metre or less early Wednesday morning.

Extended Forecast

Issued 03:00 AM EDT 11 August 2020
Thursday Wind light.
Friday Wind light becoming southeast 15 knots.
Saturday Wind southeast 15 knots diminishing to light late in the day.

Ice Forecast*

Issued 12:00 PM EDT 17 May 2020 Today Tonight and Monday Forecasts available to mariners upon request.

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

 

[ Canadian Ice Service ]

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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 Kenora Airport 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
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land station Land Station
Ice Conditions

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

Ice Forecasts

Issued 12:00 PM EDT 17 May 2020 Today Tonight and Monday

Ice Coverage

Forecasts available to mariners upon request.

Warnings

Warnings (In effect)

Strong wind warning in effect

Western Lake Superior

Issued 10:30 AM EDT 11 August 2020

'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 10:30 AM EDT 11 August 2020 Today Tonight and Wednesday At 10:30 a.m. EDT today cold front located on a line
northeast-southwest over southern Ontario.
By 10:30 a.m. EDT Wednesday departing cold front located on a line
northeast-southwest over the Eastern Seaboard.

At 10:30 a.m. EDT today ridge from 1015 mb high located over Iowa
extending northwestward.
By 10:30 a.m. EDT Wednesday ridge from 1016 mb high located from
Lower Michigan to Lake of the Woods.

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