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Marine Forecast
Expires:201711211630;;734146
FZUS63 KMQT 210817
GLFLS 

Open Lake Forecast for Lake Superior
National Weather Service Marquette MI
317 AM EST Tue Nov 21 2017

For waters beyond five nautical miles of shore on Lake Superior

Waves are the significant wave height - the average of the
highest 1/3 of the wave spectrum. Occasional wave height is the
average of the highest 1/10 of the wave spectrum.

.SYNOPSIS...A 29.1 inch low pressure north of Lake Superior this 
morning will move to western Quebec east of James Bay and weaken to 
29.3 inches by this evening. A 30.5 inch high over the Northern 
Plains this evening will drift south into the Central Plains 
Wednesday morning and weaken to 30.2 inches over the Ohio Valley on 
Wednesday night. On Thursday morning, a 29.9 inch trough will settle 
south across the Upper Great Lakes. A 30.0 inch ridge will then move 
over the Upper Great Lakes Thursday night and into the Lower Great 
Lakes on Friday morning. A 29.0 inch low will move to Lake Winnipeg 
Friday morning and track east across central and eastern Ontario 
Friday evening while deepening to 28.9 inches. A 30.2 inch ridge 
will move into the northern plains on Saturday. 

LSZ265-211630-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
317 AM EST Tue Nov 21 2017

Gale Warning -  IN EFFECT THROUGH THIS EVENING...

.EARLY THIS MORNING...West gales to 35 knots. Scattered snow
showers, possibly mixed with rain. Waves 5 to 9 feet occasionally
to 11 feet. 
Today - West gales to 40 knots veering northwest. Scattered snow
showers in the morning, then numerous snow showers in the
afternoon. Waves building to 10 to 14 feet occasionally to
18 feet, then subsiding to 8 to 11 feet occasionally to 14 feet. 

Tonight - Northwest gales to 35 knots diminishing to 20 to 30 knots by midnight. Scattered snow showers. Waves subsiding to 3 to 5 feet occasionally to 7 feet. .WEDNESDAY...West winds 15 to 25 knots backing southwest by mid afternoon. A slight chance of snow showers in the morning. Waves subsiding to 1 to 3 feet. .WEDNESDAY NIGHT...Southwest winds 15 to 25 knots veering west after midnight. A slight chance of snow showers. Waves building to 2 to 4 feet. .THURSDAY...West winds 20 to 30 knots becoming northwest 15 to 25 knots in the afternoon. Waves subsiding to 1 to 3 feet. .THURSDAY NIGHT...Southwest winds 10 to 20 knots becoming south 15 to 25 knots after midnight. Waves subsiding to calm to 2 feet, then building to 1 to 3 feet. .FRIDAY...Southwest winds 20 to 30 knots becoming west gales to 35 knots. Rain showers likely, then a chance of rain showers, possibly mixed with snow. Waves building to 2 to 4 feet, then subsiding to 1 to 3 feet. .SATURDAY...Northwest gales to 35 knots diminishing to 20 to 30 knots. Snow showers likely, then a chance of snow showers. Waves building to 8 to 11 feet occasionally to 14 feet, then subsiding to 3 to 6 feet occasionally to 8 feet. $$


US Forecasts are Public Domain and derived from the
National Weather Service - (IWIN) and the National Oceanic Atmospheric Administration (NOAA)
Canadian forecasts are obtained from and are copyright of Environment Canada.

All weather information provided by MarineWaypoints.com should be used with caution.
We cannot guarantee that the data provided here is 100% accurate or up to date!


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