Eastern Lake Superior

Forecast

Marine Forecast

Issued 10:01 PM EDT 25 June 2016

Tonight and Sunday

Strong wind warning in effect. Squall watch in effect.

Wind southeast 20 knots with gusts to 50 near thunderstorms. Wind becoming southwest 20 late overnight.

A few showers and a few thunderstorms ending Sunday morning. Risk of thunderstorms early Sunday morning. Fog patches dissipating near noon Sunday.

Waves

Issued 06:30 PM EDT 25 June 2016
Tonight and Sunday Waves one and one half metres building to 2 near noon Sunday.

Extended Forecast

Issued 06:30 PM EDT 25 June 2016
Monday Wind west 20 knots veering to northwest 25 in the morning.
Tuesday Wind north 20 knots diminishing to light.
Wednesday Wind northwest 15 knots backing to southwest 15.

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Weather Conditions

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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 7 May 2016 Forecasts have ended for the season.
Warnings

Warnings (In effect)

Strong wind warning in effect

Eastern Lake Superior

Issued 10:01 PM EDT 25 June 2016

'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.

Watches (In effect)

Squall watch in effect

Eastern Lake Superior

Issued 10:01 PM EDT 25 June 2016 Conditions are favourable for the development of squalls with wind gusts up to 50 knots, frequent lightning and large hail.

The threat of severe thunderstorms will continue late this evening and after midnight.

Large hail can damage vessels and cause injury. Mariners are advised to prepare for potential squalls. Vulnerable vessels are most at risk and should seek safe harbour if underway.

Please continue to monitor alerts and forecasts issued by Environment Canada. For more information monitor Canadian Coast Guard radio or Weatheradio stations.

Synopsis

Technical Marine Synopsis

Issued 6:30 PM EDT 25 June 2016 Tonight and Sunday At 6:30 p.m. EDT tonight ridge located on a line northeast-southwest
over New York State.
By 6:30 p.m. EDT Sunday ridge located on a line northeast-southwest
over the Eastern Seaboard.

At 6:30 p.m. EDT tonight deepening low 1000 mb located over
southern Manitoba.
By 6:30 p.m. EDT Sunday low 996 mb located over James Bay.

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