fzus63 kmqt 162001
glfls 
expires:202606170800;;857272

open lake forecast for lake superior
national weather service marquette mi
401 pm edt tue jun 16 2026

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 29.5 inch low over the u.p. slowly moves east-northeast into 
ontario this afternoon and tonight. a low of 29.2 inches over the 
northern plains on wednesday morning then moves through lower 
michigan wednesday evening before arriving into southern ontario 
early thursday morning. a 29.9 inch high then develops over the 
plains thursday and thursday night, strengthening to 30.0 inches by 
friday before diving into the mid-mississippi valley late in the 
day; this brings 29.9 inch ridging over lake superior by friday. the 
ridging remains over lake superior on saturday before a high out of 
northern canada increases ridging to around 30.0 inches over the 
lake by sunday.




lsz162-170800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
401 pm edt tue jun 16 2026 /301 pm cdt tue jun 16 2026/

.late this afternoon...southwest winds 5 to 15 knots. waves calm
to 2 feet. 
.tonight...southwest winds 5 to 15 knots becoming north less than
10 knots after midnight, then veering southeast late. a slight
chance of rain showers after midnight. waves calm to 2 feet. 
.wednesday...east winds 5 to 15 knots increasing to 10 to
20 knots in the afternoon, then becoming northeast 15 to 25 knots
late. a chance of rain showers. waves building to 2 to 4 feet. 
.wednesday night...northeast winds 15 to 25 knots diminishing to
5 to 15 knots after midnight, then backing north late. a chance
of rain showers. waves subsiding to calm to 2 feet. 
.thursday...west winds 5 to 15 knots increasing to 10 to 20 knots
by mid afternoon. a slight chance of showers by mid afternoon.
waves calm to 2 feet. 
.thursday night...west winds 10 to 20 knots. waves calm to
2 feet. 
.friday...west winds 10 to 20 knots becoming southwest 5 to
15 knots by mid afternoon. waves calm to 2 feet. 
.friday night...west winds 5 to 15 knots. waves calm to 2 feet. 
.saturday...west winds 5 to 15 knots veering north. waves calm to
2 feet. 
.sunday...northeast winds 5 to 15 knots. waves calm to 2 feet. 

$$

fzus63 kmqt 162001
glfls 
expires:202606170800;;857273

open lake forecast for lake superior
national weather service marquette mi
401 pm edt tue jun 16 2026

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 29.5 inch low over the u.p. slowly moves east-northeast into 
ontario this afternoon and tonight. a low of 29.2 inches over the 
northern plains on wednesday morning then moves through lower 
michigan wednesday evening before arriving into southern ontario 
early thursday morning. a 29.9 inch high then develops over the 
plains thursday and thursday night, strengthening to 30.0 inches by 
friday before diving into the mid-mississippi valley late in the 
day; this brings 29.9 inch ridging over lake superior by friday. the 
ridging remains over lake superior on saturday before a high out of 
northern canada increases ridging to around 30.0 inches over the 
lake by sunday.




lsz263-170800-
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-
401 pm edt tue jun 16 2026

.late this afternoon...southwest winds 5 to 15 knots. a slight
chance of showers. waves calm to 2 feet. 
.tonight...west winds 5 to 15 knots backing southwest after
midnight, then becoming south less than 10 knots late. waves calm
to 2 feet. 
.wednesday...southeast winds 5 to 15 knots backing east in the
afternoon, then increasing to 10 to 20 knots late. a chance of
rain showers. waves calm to 2 feet. 
.wednesday night...northeast winds 10 to 20 knots diminishing to
5 to 15 knots after midnight, then backing north late. a slight
chance of rain showers. waves building to 1 to 3 feet, then
subsiding to calm to 2 feet. 
.thursday...west winds 5 to 15 knots. a slight chance of showers
by mid afternoon. waves building to 1 to 3 feet. 
.thursday night...west winds 5 to 15 knots. waves subsiding to
calm to 2 feet. 
.friday...west winds 5 to 15 knots increasing to 10 to 20 knots
by mid afternoon. waves building to 1 to 3 feet. 
.friday night...west winds 5 to 15 knots. waves subsiding to calm
to 2 feet. 
.saturday...west winds 5 to 15 knots veering north. waves calm to
2 feet. 
.sunday...northeast winds 5 to 15 knots. waves calm to 2 feet. 

$$