fzus63 kmqt 011500
glfls 
expires:202603012100;;450380

open lake forecast for lake superior
national weather service marquette mi
1000 am est sun mar 1 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...

this morning an extensive area of high pressure was centered at 30.7 
inches over northern mn and far southwest ontario. this high will 
shift east today, encompassing all of the great lakes at 30.5 
inches. the high will shift east on monday as a 29.9 inch low moves 
from the canadian prairies to james bay, deepening to 29.7 inches. 
the low will drag a weak trough of 30.2 inches across lake superior 
monday night before weak ridging builds over the lake on tuesday as 
another, more compact high of 30.4 inches moves to james bay. 
another large area of high pressure will move into central and 
eastern canada by thursday morning. the strong high will help keep a 
29.7 inch low moving up from the southern plains to our south as it 
weakens to 29.9 inches by the time it reaches the lower great lakes 
wednesday night, dissipating thereafter.



lsz162-012100-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1000 am est sun mar 1 2026 /900 am cst sun mar 1 2026/

.rest of today...northwest winds 5 to 15 knots backing southwest
by mid afternoon. waves calm to 2 feet. 
.tonight...southeast winds 5 to 15 knots veering south by
midnight. waves calm to 2 feet. 
.monday...southwest winds 5 to 15 knots increasing to 10 to
20 knots. waves building to 3 to 6 feet occasionally to 8 feet. 
.monday night...southwest gales to 35 knots. waves subsiding to
calm to 2 feet. 
.tuesday...southwest winds 20 to 30 knots diminishing to 15 to
25 knots in the afternoon. waves calm to 2 feet. 
.tuesday night...west winds 15 to 25 knots. waves calm to 2 feet.
.wednesday...west winds 10 to 20 knots becoming east 15 to
25 knots. waves building to 1 to 3 feet. 
.thursday...east winds 15 to 25 knots backing northeast. a chance
of rain showers, possibly mixed with freezing rain. waves
building to 3 to 5 feet occasionally to 7 feet, then subsiding to
2 to 4 feet. 

$$

fzus63 kmqt 011500
glfls 
expires:202603012100;;450381

open lake forecast for lake superior
national weather service marquette mi
1000 am est sun mar 1 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...

this morning an extensive area of high pressure was centered at 30.7 
inches over northern mn and far southwest ontario. this high will 
shift east today, encompassing all of the great lakes at 30.5 
inches. the high will shift east on monday as a 29.9 inch low moves 
from the canadian prairies to james bay, deepening to 29.7 inches. 
the low will drag a weak trough of 30.2 inches across lake superior 
monday night before weak ridging builds over the lake on tuesday as 
another, more compact high of 30.4 inches moves to james bay. 
another large area of high pressure will move into central and 
eastern canada by thursday morning. the strong high will help keep a 
29.7 inch low moving up from the southern plains to our south as it 
weakens to 29.9 inches by the time it reaches the lower great lakes 
wednesday night, dissipating thereafter.



lsz263-012100-
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 sun mar 1 2026

...gale watch in effect from monday morning through monday
evening...

.rest of today...northwest winds 5 to 15 knots backing west by
mid afternoon. a slight chance of snow showers late in the
morning. waves calm to 2 feet. 
.tonight...southwest winds 5 to 15 knots backing south by
midnight. waves building to 1 to 3 feet. 
.monday...south winds 5 to 15 knots becoming southwest 10 to
20 knots. waves building to 4 to 8 feet occasionally to 10 feet. 
.monday night...southwest gales to 35 knots. waves subsiding to
calm to 2 feet. 
.tuesday...southwest winds 20 to 30 knots diminishing to 15 to
25 knots in the afternoon. waves calm to 2 feet. 
.tuesday night...west winds 20 to 30 knots. waves calm to 2 feet.
.wednesday...west winds 20 to 30 knots backing east. waves
building to 4 to 7 feet occasionally to 9 feet. 
.thursday...east winds 20 to 30 knots becoming northeast 15 to
25 knots. waves subsiding to 3 to 6 feet occasionally to 8 feet,
then building to 5 to 8 feet occasionally to 10 feet. 

$$