fzus63 kmqt 160201
glfls 
expires:202610160800;;169051

open lake forecast for lake superior
national weather service marquette mi
1001 pm edt thu oct 15 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 29.6 inch low over lower michigan lifts to southern ontario at 
29.5 inches friday morning. in its wake, a 30.8 inch high lifting 
off of the central rockies tonight weakens to 30.6 inches on friday 
as it moves east over the plains. as it does so, the aforementioned 
low deepens to 29.4 inches and heads towards the mouth of the st. 
lawrence river. 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 canadian prairies towards hudson bay, deepening to 29.0 
inches by the time it arrives on sunday. this low is projected to 
bring troughing of 29.9 inches over lake superior on sunday. as the 
low moves east over hudson bay and weakens with time sunday night 
into monday, expect high pressure ridging of 30.3 inches to return 
to the upper great lakes by late monday. the high pressure ridging 
strengthens to 30.4 inches over lake superior by tuesday as the high 
pressure center at 30.5 inches over northern ontario lifts towards 
james bay. 




lsz162-160800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1001 pm edt thu oct 15 2026 /901 pm cdt thu oct 15 2026/

...gale warning in effect from 5 am edt /4 am cdt/ friday through
friday afternoon...

.rest of tonight...northwest winds 10 to 20 knots becoming north
15 to 25 knots after midnight, then increasing to gales to
35 knots late. a chance of rain. waves calm to 2 feet building to
6 to 9 feet occasionally to 11 feet. 
.friday...north gales to 40 knots diminishing to 15 to 25 knots
late. waves building to 9 to 12 feet occasionally to 15 feet,
then subsiding to 3 to 6 feet occasionally to 8 feet. 
.friday night...northwest winds 10 to 20 knots backing west after
midnight, then increasing to 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. 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 35 knots. waves building to
7 to 10 feet occasionally to 13 feet. 
.sunday...southwest gales to 35 knots. waves building to 8 to
11 feet occasionally to 14 feet, then subsiding to 5 to 8 feet
occasionally to 10 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 north. waves calm to
2 feet. 
.tuesday...east winds 5 to 15 knots. waves calm to 2 feet. 

$$

fzus63 kmqt 160201
glfls 
expires:202610160800;;169052

open lake forecast for lake superior
national weather service marquette mi
1001 pm edt thu oct 15 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 29.6 inch low over lower michigan lifts to southern ontario at 
29.5 inches friday morning. in its wake, a 30.8 inch high lifting 
off of the central rockies tonight weakens to 30.6 inches on friday 
as it moves east over the plains. as it does so, the aforementioned 
low deepens to 29.4 inches and heads towards the mouth of the st. 
lawrence river. 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 canadian prairies towards hudson bay, deepening to 29.0 
inches by the time it arrives on sunday. this low is projected to 
bring troughing of 29.9 inches over lake superior on sunday. as the 
low moves east over hudson bay and weakens with time sunday night 
into monday, expect high pressure ridging of 30.3 inches to return 
to the upper great lakes by late monday. the high pressure ridging 
strengthens to 30.4 inches over lake superior by tuesday as the high 
pressure center at 30.5 inches over northern ontario lifts towards 
james bay. 




lsz263-160800-
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 pm edt thu oct 15 2026

...gale warning in effect from 5 am edt friday through friday
afternoon...

.rest of tonight...north winds 5 to 15 knots increasing to gales
to 40 knots. rain. waves calm to 2 feet building to 8 to 11 feet
occasionally to 14 feet. 
.friday...north gales to 40 knots diminishing to 20 to 30 knots
late. a chance of rain showers through early afternoon. waves
building to 11 to 15 feet occasionally to 19 feet, then subsiding
to 5 to 8 feet occasionally to 10 feet. 
.friday night...northwest winds 15 to 25 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 gales to 35 knots. waves building to 8 to
11 feet occasionally to 14 feet, then subsiding to 6 to 9 feet
occasionally to 11 feet. 
.saturday night...southwest gales to 40 knots. waves subsiding to
5 to 8 feet occasionally to 10 feet, then building to 8 to
11 feet occasionally to 14 feet. 
.sunday...southwest gales to 40 knots. waves building to 9 to
12 feet occasionally to 15 feet, then subsiding to 6 to 9 feet
occasionally to 11 feet. 
.sunday night...southwest gales to 35 knots becoming west 10 to
20 knots after midnight. waves subsiding to 1 to 3 feet. 
.monday...west winds 5 to 15 knots. waves subsiding to calm to
2 feet. 
.tuesday...east winds 5 to 15 knots veering southeast. waves calm
to 2 feet. 

$$