fzus63 kmqt 071500
glfls 
expires:202601072100;;946229

open lake forecast for lake superior
national weather service marquette mi
1000 am 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...

weak ridging of 29.7 persists over lake superior today while 29.6 
inch low pressure broadly organizes over the plains and 30.0 inch 
high pressure resides over the ohio river valley. by thursday 
morning, the high will build to 30.2 inches over the mid atlantic 
states 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 friday morning and then quebec by the 
evening hours with broad high pressure over the high plains of at 
least 30.6 inches 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.



lsz162-072100-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1000 am est wed jan 7 2026 /900 am cst wed jan 7 2026/

.rest of today...southwest winds 10 to 20 knots increasing to
15 to 25 knots by late morning, then diminishing to 10 to
20 knots by mid afternoon. waves 1 to 3 feet building to 2 to
4 feet, then subsiding to 1 to 3 feet. 
.tonight...southwest winds 10 to 20 knots diminishing to 5 to
15 knots late. waves subsiding to calm to 2 feet, then building
to 1 to 3 feet. 
.thursday...west winds 5 to 15 knots. waves subsiding to calm to
2 feet. 
.thursday night...north winds 5 to 15 knots increasing to 10 to
20 knots after midnight. a slight chance of rain showers in the
evening. waves building to 1 to 3 feet. 
.friday...north winds 10 to 20 knots becoming northwest 5 to
15 knots in the afternoon. waves subsiding to calm to 2 feet. 
.friday night...southwest winds 5 to 15 knots becoming southeast
10 to 20 knots after midnight. waves calm to 2 feet. 
.saturday...north winds 20 to 30 knots increasing to gales to
35 knots. a chance of snow showers. 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 15 to 25 knots backing southwest. waves
subsiding to calm to 2 feet, then building to 2 to 4 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 071500
glfls 
expires:202601072100;;946230

open lake forecast for lake superior
national weather service marquette mi
1000 am 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...

weak ridging of 29.7 persists over lake superior today while 29.6 
inch low pressure broadly organizes over the plains and 30.0 inch 
high pressure resides over the ohio river valley. by thursday 
morning, the high will build to 30.2 inches over the mid atlantic 
states 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 friday morning and then quebec by the 
evening hours with broad high pressure over the high plains of at 
least 30.6 inches 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.



lsz263-072100-
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 am est wed jan 7 2026

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

note, wave height forecasts are for ice free areas.

$$