fzus63 kmqt 271401
glfls 
expires:202606272000;;995549

open lake forecast for lake superior
national weather service marquette mi
1000 am edt sat jun 27 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... 

through this afternoon, 30.1 inch high will extend from the upper 
great lakes to eastern hudson bay while low pressure of at least 
29.5 inches develops over the high plains. into sunday morning, the 
low consolidates to around 29.4 inches over southern saskatchewan as 
the high retreats to hudson bay, remaining at 30.1 inches. the low 
pushes into manitoba and the dakotas early monday morning while the 
high shifts southeast to just east of the lower great lakes. tuesday 
into wednesday, the low moves through northern ontario at around 
29.5 inches as 30.1 inch high pressure extends over much of the east 
coast. by thursday morning, the low will move east through quebec 
while 30.1 inch high pressure builds south of the great lakes.




lsz162-272000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1000 am edt sat jun 27 2026 /900 am cdt sat jun 27 2026/

.rest of today...east winds 5 to 15 knots becoming northeast
10 to 20 knots in the afternoon. waves calm to 2 feet building to
1 to 3 feet. 
.tonight...northeast winds 10 to 20 knots veering east late.
waves subsiding to calm to 2 feet. 
.sunday...east winds 10 to 20 knots increasing to 15 to 25 knots
in the afternoon. a chance of showers by mid afternoon. waves
building to 2 to 4 feet. 
.sunday night...east winds 15 to 25 knots diminishing to 10 to
20 knots after midnight. showers and a chance of thunderstorms.
waves building to 3 to 5 feet occasionally to 7 feet, then
subsiding to 1 to 3 feet. 
.monday...northeast winds 10 to 20 knots increasing to 15 to
25 knots by mid afternoon. a chance of showers and thunderstorms.
waves building to 2 to 4 feet. 
.monday night...northeast winds 15 to 25 knots becoming southwest
5 to 15 knots after midnight. a chance of showers. waves
subsiding to 1 to 3 feet. 
.tuesday...southwest winds 5 to 15 knots increasing to 10 to
20 knots. a chance of showers and thunderstorms. waves subsiding
to calm to 2 feet. 
.wednesday...southwest winds 10 to 20 knots becoming west 5 to
15 knots. a chance of showers and thunderstorms. waves building
to 1 to 3 feet, then subsiding to calm to 2 feet. 

$$

fzus63 kmqt 271401
glfls 
expires:202606272000;;995550

open lake forecast for lake superior
national weather service marquette mi
1000 am edt sat jun 27 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... 

through this afternoon, 30.1 inch high will extend from the upper 
great lakes to eastern hudson bay while low pressure of at least 
29.5 inches develops over the high plains. into sunday morning, the 
low consolidates to around 29.4 inches over southern saskatchewan as 
the high retreats to hudson bay, remaining at 30.1 inches. the low 
pushes into manitoba and the dakotas early monday morning while the 
high shifts southeast to just east of the lower great lakes. tuesday 
into wednesday, the low moves through northern ontario at around 
29.5 inches as 30.1 inch high pressure extends over much of the east 
coast. by thursday morning, the low will move east through quebec 
while 30.1 inch high pressure builds south of the great lakes.




lsz263-272000-
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 edt sat jun 27 2026

.rest of today...east winds less than 10 knots becoming northeast
5 to 15 knots in the afternoon, then increasing to 10 to 20 knots
late. waves calm to 2 feet. 
.tonight...east winds 10 to 20 knots becoming southeast 5 to
15 knots after midnight. waves building to 1 to 3 feet, then
subsiding to calm to 2 feet. 
.sunday...east winds 5 to 15 knots increasing to 15 to 25 knots.
a slight chance of showers by mid afternoon. waves building to
2 to 4 feet. 
.sunday night...east winds 15 to 25 knots veering southeast after
midnight. showers likely and a slight chance of thunderstorms.
waves building to 3 to 5 feet occasionally to 7 feet, then
subsiding to 2 to 4 feet. 
.monday...southeast winds 5 to 15 knots becoming east 10 to
20 knots by mid afternoon. a slight chance of showers and
thunderstorms. waves 2 to 4 feet. 
.monday night...east winds 10 to 20 knots veering southwest after
midnight. a chance of showers and thunderstorms. waves building
to 3 to 5 feet occasionally to 7 feet, then subsiding to 2 to
4 feet. 
.tuesday...southwest winds 10 to 20 knots. a chance of showers
and thunderstorms. waves subsiding to 1 to 3 feet. 
.wednesday...southwest winds 10 to 20 knots diminishing to 5 to
15 knots. a chance of showers and thunderstorms. waves subsiding
to calm to 2 feet. 

$$