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fzus63 kmqt 212004
glfls 
expires:202505220415;;917030

open lake forecast for lake superior
national weather service marquette mi
issued by national weather service gaylord mi
404 pm edt wed may 21 2025

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...
29.6inch surface low pressure center approaching lakes erie and
ontario...with 30.4inch surface high pressure center over western
ontario. still expect surface low to track near lake erie tonight
into thursday, tightening up again for a time...before surface
high builds back into the upper great lakes going into friday.


lsz162-220415-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
404 pm edt wed may 21 2025 /304 pm cdt wed may 21 2025/

.late this afternoon...northeast winds 15 to 25 knots. waves 5 to
8 feet occasionally to 10 feet subsiding to 3 to 6 feet
occasionally to 8 feet. 
.tonight...northeast winds 10 to 20 knots backing north after
midnight, then veering northeast late. waves subsiding to calm to
2 feet. 
.thursday...north winds 5 to 15 knots veering southeast in the
afternoon. waves calm to 2 feet. 
.thursday night...west winds 5 to 15 knots veering north after
midnight. waves calm to 2 feet. 
.friday...north winds 5 to 15 knots backing southwest by mid
afternoon. a slight chance of rain showers by mid afternoon.
waves calm to 2 feet. 
.friday night...east winds 5 to 15 knots backing north after
midnight. waves calm to 2 feet. 
.saturday...east winds 5 to 15 knots. waves calm to 2 feet. 
.saturday night...northeast winds 5 to 15 knots backing north
after midnight. waves calm to 2 feet. 
.sunday...northeast winds 5 to 15 knots backing north. waves calm
to 2 feet. 
.monday...northeast winds 5 to 15 knots backing north. waves calm
to 2 feet. 

$$
fzus63 kmqt 212004
glfls 
expires:202505220415;;917031

open lake forecast for lake superior
national weather service marquette mi
issued by national weather service gaylord mi
404 pm edt wed may 21 2025

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...
29.6inch surface low pressure center approaching lakes erie and
ontario...with 30.4inch surface high pressure center over western
ontario. still expect surface low to track near lake erie tonight
into thursday, tightening up again for a time...before surface
high builds back into the upper great lakes going into friday.


lsz263-220415-
lake superior from saxon harbor wi to upper entrance to portage
canal mi 5nm off shore to the us/canadian border including isle
royale national park-
404 pm edt wed may 21 2025

.late this afternoon...northeast winds 10 to 20 knots. waves 4 to
7 feet occasionally to 9 feet subsiding to 3 to 6 feet
occasionally to 8 feet. 
.tonight...northeast winds 5 to 15 knots increasing to 10 to
20 knots after midnight, then becoming north 5 to 15 knots late.
waves subsiding to 1 to 3 feet. 
.thursday...north winds 10 to 20 knots diminishing to 5 to
15 knots in the afternoon, then increasing to 10 to 20 knots
late. waves subsiding to calm to 2 feet, then building to 1 to
3 feet. 
.thursday night...north winds 10 to 20 knots diminishing to 5 to
15 knots after midnight. waves building to 2 to 4 feet, then
subsiding to 1 to 3 feet. 
.friday...north winds 5 to 15 knots backing northwest by mid
afternoon. waves subsiding to calm to 2 feet. 
.friday night...northwest winds 5 to 15 knots veering north after
midnight. waves calm to 2 feet. 
.saturday...north winds 5 to 15 knots backing west by mid
afternoon. waves calm to 2 feet. 
.saturday night...west winds less than 10 knots veering northwest
after midnight. waves calm to 2 feet. 
.sunday...north winds 5 to 15 knots becoming west less than
10 knots. waves calm to 2 feet. 
.monday...northeast winds 5 to 15 knots backing west. waves calm
to 2 feet. 

$$
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