fzus63 kmqt 080300
glfls 
expires:202601080900;;974629

open lake forecast for lake superior
national weather service marquette mi
1000 pm est wed jan 7 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...

high pressure will slide east tonight and build to 30.2 inches over 
the mid atlantic states by thursday morning while a 29.6 inch low 
moves from manitoba to northern ontario. meanwhile, a developing 
29.4 inch colorado low moves to the upper mississippi valley by 
thursday evening. the low reaches northern lower michigan early 
friday morning and then quebec by the evening hours with broad 30.6 
inch high pressure building over the rockies in its wake. friday 
night through saturday, a low will deepen from 29.9 to 29.7 inches 
as it moves from the lower mississippi valley to the lower great 
lakes, reaching southern quebec sunday morning as 30.5 inch high 
pressure overspreads the plains. the high slides south of the great 
lakes on monday while a 29.6 inch low moves into northern ontario.



lsz162-080900-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1000 pm est wed jan 7 2026 /900 pm cst wed jan 7 2026/

.rest of tonight...southwest winds 10 to 20 knots diminishing to
5 to 15 knots late. patchy fog after midnight. waves calm to
2 feet. 
.thursday...southwest winds 5 to 15 knots veering west by mid
afternoon. patchy fog in the morning. waves calm to 2 feet. 
.thursday night...northeast winds 5 to 15 knots becoming north
15 to 25 knots by midnight, then diminishing to 10 to 20 knots
late. a slight chance of rain. a slight chance of snow after
midnight. waves building to 2 to 4 feet. 
.friday...north winds 10 to 20 knots becoming west 5 to 15 knots
in the afternoon. waves subsiding to calm to 2 feet. 
.friday night...southwest winds 5 to 15 knots backing south after
midnight. waves calm to 2 feet. 
.saturday...northeast winds 10 to 20 knots becoming north 20 to
30 knots in the afternoon. a chance of snow. waves building to
3 to 6 feet occasionally to 8 feet. 
.saturday night...north gales to 35 knots diminishing to 20 to
30 knots after midnight. waves building to 4 to 7 feet
occasionally to 9 feet, then subsiding to 3 to 6 feet
occasionally to 8 feet. 
.sunday...west winds 10 to 20 knots increasing to 15 to 25 knots.
waves subsiding to calm to 2 feet, then building to 2 to 4 feet. 
.monday...west winds 10 to 20 knots. waves subsiding to calm to
2 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 080300
glfls 
expires:202601080900;;974630

open lake forecast for lake superior
national weather service marquette mi
1000 pm est wed jan 7 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...

high pressure will slide east tonight and build to 30.2 inches over 
the mid atlantic states by thursday morning while a 29.6 inch low 
moves from manitoba to northern ontario. meanwhile, a developing 
29.4 inch colorado low moves to the upper mississippi valley by 
thursday evening. the low reaches northern lower michigan early 
friday morning and then quebec by the evening hours with broad 30.6 
inch high pressure building over the rockies in its wake. friday 
night through saturday, a low will deepen from 29.9 to 29.7 inches 
as it moves from the lower mississippi valley to the lower great 
lakes, reaching southern quebec sunday morning as 30.5 inch high 
pressure overspreads the plains. the high slides south of the great 
lakes on monday while a 29.6 inch low moves into northern ontario.



lsz263-080900-
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-
1000 pm est wed jan 7 2026

.rest of tonight...southwest winds 5 to 15 knots. patchy fog
after midnight. waves 1 to 3 feet subsiding to calm to 2 feet. 
.thursday...southwest winds 5 to 15 knots veering west by mid
afternoon. patchy fog in the morning. waves calm to 2 feet. 
.thursday night...northeast winds 5 to 15 knots becoming north
15 to 25 knots by midnight. a chance of rain. a slight chance of
snow after midnight. waves building to 4 to 7 feet occasionally
to 9 feet. 
.friday...north winds 15 to 25 knots becoming northwest 10 to
20 knots in the afternoon. waves subsiding to 1 to 3 feet. 
.friday night...west winds 5 to 15 knots backing southeast after
midnight. waves subsiding to calm to 2 feet. 
.saturday...east winds 10 to 20 knots becoming northeast gales to
35 knots in the afternoon. a chance of snow. waves building to
4 to 7 feet occasionally to 9 feet. 
.saturday night...north gales to 35 knots. a chance of snow in
the evening. freezing spray. waves building to 8 to 11 feet
occasionally to 14 feet, then subsiding to 6 to 9 feet
occasionally to 11 feet. 
.sunday...north winds 15 to 25 knots becoming west 20 to
30 knots. waves subsiding to 2 to 4 feet, then building to 4 to
7 feet occasionally to 9 feet. 
.monday...west winds 15 to 25 knots. waves subsiding to 2 to
4 feet. 

note, wave height forecasts are for ice free areas.

$$