fzus63 kmqt 082101
glfls 
expires:202601090900;;017442

open lake forecast for lake superior
national weather service marquette mi
400 pm est thu jan 8 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 moves from manitoba to northern ontario today while 
a 29.4 inch low lifts into the upper mississippi river valley. this 
low will move through northern lake michigan tonight while the low 
to the north reaches james bay. both press into quebec friday as 
30.1 inch ridging builds over the upper midwest. friday night 
through saturday, two lows (one coming from manitoba and another 
from the lower mississippi valley) will merge, resulting in a low of 
at least 29.8 inches near southern ontario. this low will lift into 
quebec near 29.6 inches sunday afternoon as a 30.6 inch high spreads 
across the central plains. the high extends a 30.1 inch ridge over 
the lake sunday night ahead of a 29.8 inch trough transiting the 
lake monday.



lsz162-090900-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
400 pm est thu jan 8 2026 /300 pm cst thu jan 8 2026/

.late this afternoon...northwest winds 5 to 15 knots. waves calm
to 2 feet. 
.tonight...north winds 5 to 15 knots increasing to 15 to 25 knots
by midnight. a slight chance of rain. waves building to 3 to
6 feet occasionally to 8 feet. 
.friday...north winds 15 to 25 knots becoming northwest 10 to
20 knots by late morning, then becoming west 5 to 15 knots by mid
afternoon. waves subsiding to calm to 2 feet. 
.friday night...southwest winds 5 to 15 knots. a slight chance of
snow showers after midnight. waves calm to 2 feet. 
.saturday...northwest winds 10 to 20 knots becoming north 15 to
25 knots in the afternoon. a chance of snow showers in the
morning, then snow showers likely in the afternoon. waves
building to 2 to 4 feet. 
.saturday night...north winds 15 to 25 knots. waves building to
3 to 6 feet occasionally to 8 feet. 
.sunday...northwest winds 10 to 20 knots becoming west 15 to
25 knots in the afternoon. waves subsiding to 1 to 3 feet, then
building to 2 to 4 feet. 
.sunday night...southwest winds 20 to 30 knots veering west after
midnight. waves building to 3 to 6 feet occasionally to 8 feet,
then subsiding to 2 to 4 feet. 
.monday...west winds 10 to 20 knots. waves subsiding to calm to
2 feet. 
.tuesday...north winds 10 to 20 knots increasing to 15 to
25 knots. a chance of rain showers. a chance of snow showers.
waves building to 2 to 4 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 082101
glfls 
expires:202601090900;;017443

open lake forecast for lake superior
national weather service marquette mi
400 pm est thu jan 8 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 moves from manitoba to northern ontario today while 
a 29.4 inch low lifts into the upper mississippi river valley. this 
low will move through northern lake michigan tonight while the low 
to the north reaches james bay. both press into quebec friday as 
30.1 inch ridging builds over the upper midwest. friday night 
through saturday, two lows (one coming from manitoba and another 
from the lower mississippi valley) will merge, resulting in a low of 
at least 29.8 inches near southern ontario. this low will lift into 
quebec near 29.6 inches sunday afternoon as a 30.6 inch high spreads 
across the central plains. the high extends a 30.1 inch ridge over 
the lake sunday night ahead of a 29.8 inch trough transiting the 
lake monday.



lsz263-090900-
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-
400 pm est thu jan 8 2026

.late this afternoon...northwest winds less than 10 knots. patchy
fog. waves calm to 2 feet. 
.tonight...north winds 5 to 15 knots increasing to 20 to 30 knots
by midnight. patchy dense fog. a slight chance of rain. a slight
chance of snow after midnight. waves building to 5 to 8 feet
occasionally to 10 feet. 
.friday...north winds 20 to 30 knots becoming northwest 15 to
25 knots by late morning, then becoming west 10 to 20 knots by
mid afternoon. waves subsiding to 1 to 3 feet. 
.friday night...west winds 5 to 15 knots backing south by
midnight, then backing southeast late. waves subsiding to calm to
2 feet. 
.saturday...southeast winds 5 to 15 knots becoming northeast
15 to 25 knots in the afternoon. a chance of snow showers. waves
building to 3 to 6 feet occasionally to 8 feet. 
.saturday night...north winds 20 to 30 knots. freezing spray.
waves building to 6 to 9 feet occasionally to 11 feet, then
subsiding to 4 to 7 feet occasionally to 9 feet. 
.sunday...north winds 10 to 20 knots becoming west 15 to 25 knots
in the afternoon. waves subsiding to 1 to 3 feet, then building
to 3 to 5 feet occasionally to 7 feet. 
.sunday night...southwest winds 20 to 30 knots veering west after
midnight. waves building to 5 to 9 feet occasionally to 11 feet. 
.monday...west winds 15 to 25 knots diminishing to 10 to
20 knots. waves subsiding to 1 to 3 feet. 
.tuesday...north winds 10 to 20 knots increasing to 20 to
30 knots. a chance of rain showers. a chance of snow showers.
waves building to 4 to 7 feet occasionally to 9 feet. 

note, wave height forecasts are for ice free areas.

$$