fzus63 kmqt 161401
glfls 
expires:202610162000;;197079

open lake forecast for lake superior
national weather service marquette mi
1001 am edt fri oct 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 30.8 inch high moving through the plains today weakens to 30.6 
inches as it continues eastward. this weakening is expected to bring 
30.4 inch ridging over lake superior by this evening. the high then 
slides south of the great lakes at 30.5 inches by saturday night as 
a 29.2 inch alberta clipper moves through the northern canadian 
prairie provinces towards hudson bay, deepening to 29.0 inches by 
the time it arrives at hudson bay on sunday. this low is expected to 
bring weak 30.0 inch troughing to northern lake superior throughout 
the day sunday. as the low continues east over hudson bay and 
weakens with time sunday night into monday afternoon, expect high 
pressure ridging of 30.3 inches to return to the upper great lakes 
by monday. the high pressure ridging strengthens to 30.4 inches over 
lake superior by tuesday as the now 30.5 inch parent high over 
northern ontario continues east into northern quebec, deepening to 
30.6 inches as it does so. 




lsz162-162000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1001 am edt fri oct 16 2026 /901 am cdt fri oct 16 2026/

...gale warning in effect until 2 pm edt /1 pm cdt/ this
afternoon...

.rest of today...north gales to 40 knots diminishing to 15 to
25 knots late. waves 8 to 11 feet occasionally to 14 feet
subsiding to 3 to 5 feet occasionally to 7 feet. 
.tonight...northwest winds 10 to 20 knots backing west after
midnight, then becoming southwest 20 to 30 knots late. waves
subsiding to calm to 2 feet, then building to 3 to 5 feet
occasionally to 7 feet. 
.saturday...southwest gales to 35 knots diminishing to 20 to
30 knots late. waves building to 7 to 10 feet occasionally to
13 feet, then subsiding to 5 to 8 feet occasionally to 10 feet. 
.saturday night...southwest gales to 40 knots. waves subsiding to
4 to 7 feet occasionally to 9 feet, then building to 8 to 11 feet
occasionally to 14 feet. 
.sunday...southwest gales to 40 knots. waves subsiding to 4 to
7 feet occasionally to 9 feet. 
.sunday night...southwest winds 20 to 30 knots becoming west 5 to
15 knots after midnight. waves subsiding to calm to 2 feet. 
.monday...west winds 5 to 15 knots veering northeast. waves calm
to 2 feet. 
.tuesday...east winds 5 to 15 knots. waves calm to 2 feet. 

$$

fzus63 kmqt 161401
glfls 
expires:202610162000;;197080

open lake forecast for lake superior
national weather service marquette mi
1001 am edt fri oct 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 30.8 inch high moving through the plains today weakens to 30.6 
inches as it continues eastward. this weakening is expected to bring 
30.4 inch ridging over lake superior by this evening. the high then 
slides south of the great lakes at 30.5 inches by saturday night as 
a 29.2 inch alberta clipper moves through the northern canadian 
prairie provinces towards hudson bay, deepening to 29.0 inches by 
the time it arrives at hudson bay on sunday. this low is expected to 
bring weak 30.0 inch troughing to northern lake superior throughout 
the day sunday. as the low continues east over hudson bay and 
weakens with time sunday night into monday afternoon, expect high 
pressure ridging of 30.3 inches to return to the upper great lakes 
by monday. the high pressure ridging strengthens to 30.4 inches over 
lake superior by tuesday as the now 30.5 inch parent high over 
northern ontario continues east into northern quebec, deepening to 
30.6 inches as it does so. 




lsz263-162000-
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-
1001 am edt fri oct 16 2026

...gale warning in effect until 4 pm edt this afternoon...

.rest of today...north gales to 40 knots diminishing to 20 to
30 knots late. waves 10 to 14 feet occasionally to 18 feet
subsiding to 4 to 7 feet occasionally to 9 feet. 
.tonight...north winds 10 to 20 knots becoming west 5 to 15 knots
after midnight, then increasing to 20 to 30 knots late. waves
subsiding to 1 to 3 feet, then building to 3 to 6 feet
occasionally to 8 feet. 
.saturday...southwest winds 20 to 30 knots increasing to gales to
35 knots in the afternoon. waves building to 8 to 11 feet
occasionally to 14 feet, then subsiding to 5 to 8 feet
occasionally to 10 feet. 
.saturday night...southwest gales to 40 knots. waves building to
9 to 12 feet occasionally to 15 feet. 
.sunday...southwest gales to 40 knots. waves subsiding to 6 to
9 feet occasionally to 11 feet. 
.sunday night...southwest winds 20 to 30 knots becoming west
10 to 20 knots after midnight. waves subsiding to 1 to 3 feet. 
.monday...west winds 5 to 15 knots becoming south less than
10 knots. waves subsiding to calm to 2 feet. 
.tuesday...east winds 5 to 15 knots veering southeast. waves calm
to 2 feet. 

$$