fzus63 kmqt 072101
glfls 
expires:202603080900;;805154

open lake forecast for lake superior
national weather service marquette mi
400 pm est sat mar 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...

a weak 29.7 inch ridge will move over the lake this evening, 
associated with a 30.1 inch high over the southern plains. this 
ridge is kicked east by a 29.0 inch low that transits northern 
ontario sunday, reaching northwest quebec sunday night into monday 
as a secondary 29.2 inch low trails behind near the northern shores 
of lake superior. the low exits the area monday afternoon before 
being replaced by a 30.4 inch high over northern ontario tuesday. 
the high slowly moves into quebec tuesday night as 29.6 low pressure 
moves into the lower midwest. this low moves through lower michigan 
wednesday at 29.4 inches. thursday morning, lake superior will be 
situated between 29.2 inch low pressure over new england and 30.3 
inch high pressure broadly spanning the plains. by thursday 
afternoon, a 29.3 inch low will approach the region from the west 
before transiting the upper great lakes friday.



lsz162-080900-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
400 pm est sat mar 7 2026 /300 pm cst sat mar 7 2026/

...gale warning in effect from 1 am est /midnight cst/ sunday
through sunday morning...

.late this afternoon...southwest winds 10 to 20 knots. waves calm
to 2 feet. 
.tonight...southwest winds 15 to 25 knots increasing to gales to
35 knots by midnight. a chance of snow showers. a chance of rain
showers after midnight. waves building to 5 to 8 feet
occasionally to 10 feet. 
.sunday...southwest winds 20 to 30 knots diminishing to 15 to
25 knots by mid afternoon. a slight chance of rain showers in the
afternoon. waves subsiding to 3 to 5 feet occasionally to 7 feet.
.sunday night...southwest winds 15 to 25 knots increasing to
20 to 30 knots by midnight, then becoming west 15 to 25 knots
late. a slight chance of rain showers in the evening. waves
subsiding to 2 to 4 feet, then building to 3 to 5 feet
occasionally to 7 feet. 
.monday...west winds 15 to 25 knots diminishing to 5 to 15 knots
in the afternoon. waves subsiding to calm to 2 feet. 
.monday night...north winds 5 to 15 knots becoming northeast
10 to 20 knots after midnight. a chance of snow showers after
midnight. waves building to 1 to 3 feet. 
.tuesday...northeast winds 15 to 25 knots increasing to 20 to
30 knots in the afternoon. snow showers likely in the morning,
then a chance of snow showers in the afternoon. waves building to
5 to 8 feet occasionally to 10 feet. 
.tuesday night...northeast winds 20 to 30 knots diminishing to
15 to 25 knots after midnight. a chance of snow showers. waves
5 to 8 feet occasionally to 10 feet. 
.wednesday...northeast winds 15 to 25 knots becoming north 10 to
20 knots. a chance of snow showers. waves subsiding to 1 to
3 feet. 
.thursday...south winds 10 to 20 knots becoming southeast gales
to 40 knots. a chance of snow showers. rain showers likely. waves
subsiding to calm to 2 feet, then building to 7 to 10 feet
occasionally to 13 feet. 

$$

fzus63 kmqt 072101
glfls 
expires:202603080900;;805155

open lake forecast for lake superior
national weather service marquette mi
400 pm est sat mar 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...

a weak 29.7 inch ridge will move over the lake this evening, 
associated with a 30.1 inch high over the southern plains. this 
ridge is kicked east by a 29.0 inch low that transits northern 
ontario sunday, reaching northwest quebec sunday night into monday 
as a secondary 29.2 inch low trails behind near the northern shores 
of lake superior. the low exits the area monday afternoon before 
being replaced by a 30.4 inch high over northern ontario tuesday. 
the high slowly moves into quebec tuesday night as 29.6 low pressure 
moves into the lower midwest. this low moves through lower michigan 
wednesday at 29.4 inches. thursday morning, lake superior will be 
situated between 29.2 inch low pressure over new england and 30.3 
inch high pressure broadly spanning the plains. by thursday 
afternoon, a 29.3 inch low will approach the region from the west 
before transiting the upper great lakes friday.



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-
400 pm est sat mar 7 2026

...gale warning in effect from 1 am est sunday through sunday
afternoon...

.late this afternoon...west winds 5 to 15 knots. waves calm to
2 feet. 
.tonight...southwest winds 15 to 25 knots increasing to gales to
40 knots by midnight. a chance of rain and snow showers after
midnight. waves building to 6 to 9 feet occasionally to 11 feet. 
.sunday...west gales to 35 knots backing southwest by late
morning, then diminishing to 20 to 30 knots by mid afternoon. a
slight chance of rain showers in the afternoon. waves building to
7 to 10 feet occasionally to 13 feet, then subsiding to 3 to
6 feet occasionally to 8 feet. 
.sunday night...southwest winds 15 to 25 knots increasing to
20 to 30 knots by midnight, then veering west late. a slight
chance of rain showers in the evening. waves building to 4 to
7 feet occasionally to 9 feet. 
.monday...west winds 15 to 25 knots diminishing to 10 to 20 knots
in the afternoon. waves subsiding to 1 to 3 feet. 
.monday night...north winds 10 to 20 knots becoming northeast
15 to 25 knots after midnight. waves subsiding to calm to 2 feet,
then building to 1 to 3 feet. 
.tuesday...northeast winds 15 to 25 knots. a chance of snow
showers. waves building to 4 to 7 feet occasionally to 9 feet. 
.tuesday night...northeast gales to 35 knots. a chance of snow
showers. waves building to 7 to 10 feet occasionally to 13 feet. 
.wednesday...northeast gales to 35 knots becoming north 15 to
25 knots. a chance of snow showers. waves building to 8 to
11 feet occasionally to 14 feet, then subsiding to 3 to 5 feet
occasionally to 7 feet. 
.thursday...north winds 5 to 15 knots becoming southeast gales to
40 knots. a chance of snow showers, possibly mixed with rain.
waves subsiding to calm to 2 feet, then building to 11 to 15 feet
occasionally to 19 feet. 

$$