Expires:202001181045;;114081
FZUS63 KMQT 180235
GLFLS 

Open Lake Forecast for Lake Superior
National Weather Service Marquette MI
935 PM EST Fri Jan 17 2020

For waters beyond 5 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...High pressure of 30.8 inches exiting east into Quebec
this evening will give way to a 29.8 inch low pressure 
approaching the Upper Great Lakes from the Central Plains. The low
will deepen to 29.5 inches as it transits Lake Michigan during 
the day Saturday. The low will continue its northeastward track 
and exit the region overnight Saturday. High pressure of 30.8 
inches will then build into the northern Dakotas Sunday morning, 
then slowly migrate southeast into South Dakota by Monday. Tuesday
this high will continue drifting southeast into the Ohio Valley 
as it weakens to 30.5 inches. 


LSZ264-181045-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
935 PM EST Fri Jan 17 2020

...GALE WARNING IN EFFECT FROM 1 AM TO 7 AM EST SATURDAY...

.REST OF TONIGHT...Southeast winds 15 to 25 knots increasing to
20 to 30 knots by midnight with some gale force gusts to 35 knots
possible. A slight chance of snow late in the evening, then snow 
after midnight. Waves 3 to 6 feet occasionally to 8 feet building 
to 7 to 10 feet occasionally to 13 feet. 
.SATURDAY...Southeast winds 20 to 30 knots diminishing to 15 to
25 knots by late morning, then backing east by mid afternoon.
Snow. Waves subsiding to 5 to 8 feet occasionally to 10 feet. 
.SATURDAY NIGHT...Northeast winds 20 to 30 knots backing north by
midnight. Periods of snow showers in the evening, then scattered
snow showers after midnight. Freezing spray after midnight. Waves
building to 5 to 9 feet occasionally to 11 feet. 
.SUNDAY...North winds 15 to 25 knots diminishing to 10 to
20 knots in the afternoon. Freezing spray. A chance of snow
showers. Waves subsiding to 3 to 5 feet occasionally to 7 feet. 
.SUNDAY NIGHT...Northwest winds 10 to 20 knots. Freezing spray.
Waves 3 to 5 feet occasionally to 7 feet. 
.MONDAY...Northwest winds 10 to 20 knots. Freezing spray. Waves
3 to 5 feet occasionally to 7 feet. 
.MONDAY NIGHT...Northwest winds 10 to 20 knots backing west after
midnight. Freezing spray in the evening. Waves subsiding to 2 to
4 feet, then building to 3 to 5 feet occasionally to 7 feet. 
.TUESDAY...West winds 15 to 25 knots increasing to 20 to
30 knots. Waves building to 6 to 9 feet occasionally to 11 feet. 
.WEDNESDAY...Southwest winds 15 to 25 knots diminishing to 5 to
15 knots. Waves subsiding to 2 to 4 feet. 

$$