Expires:202110220415;;046979
FZUS63 KMQT 212001
GLFLS 

Open Lake Forecast for Lake Superior
National Weather Service Marquette MI
401 PM EDT Thu Oct 21 2021

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...A 29.7 inch low pressure over Georgian Bay this
evening will track east, reaching southern Quebec tonight, while 
a 30.3 inch high pressure over northern Manitoba extends a 30.1 
inch ridge south into the Northern Plains. This high will then 
extend the ridge southeast toward the Upper Great Lakes Friday 
and Saturday. Sunday and Monday, the high pressure will build to 
30.4 inches as it shifts over northern Ontario. The ridge weakens
to 29.8 inches Tuesday as a 29.3 inch low pressure organizes over
the Central Plains. 

&&


LSZ162-220415-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
401 PM EDT Thu Oct 21 2021 /301 PM CDT Thu Oct 21 2021/

.LATE THIS AFTERNOON...North winds 10 to 20 knots. Waves 1 to
3 feet subsiding to calm to 2 feet. 
.TONIGHT...North winds 10 to 20 knots. Waves building to 1 to
3 feet, then subsiding to calm to 2 feet. 
.FRIDAY...North winds 10 to 20 knots diminishing to 5 to 15 knots
in the afternoon. Waves calm to 2 feet. 
.FRIDAY NIGHT...North winds 10 to 20 knots. Waves calm to 2 feet.
.SATURDAY...North winds 5 to 15 knots backing northwest by mid
afternoon. Waves calm to 2 feet. 
.SATURDAY NIGHT...North winds 5 to 15 knots veering northeast
after midnight. Waves calm to 2 feet. 
.SUNDAY...East winds 10 to 20 knots increasing to 15 to 25 knots
by mid afternoon. Waves building to 3 to 5 feet occasionally to
7 feet. 
.SUNDAY NIGHT...East winds 15 to 25 knots. Waves 3 to 5 feet
occasionally to 7 feet. 
.MONDAY...East winds 10 to 20 knots veering southeast. Waves
subsiding to 2 to 4 feet. 
.TUESDAY...Southeast winds 10 to 20 knots. A chance of showers.
Waves subsiding to 1 to 3 feet, then building to 2 to 4 feet. 

$$