fzus63 kmqt 040801
glfls 
expires:202606042000;;157274

open lake forecast for lake superior
national weather service marquette mi
400 am edt thu jun 4 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 of 30.2 inches over the ohio river valley shifts 
southeast and weakens to 30.1 inches today. meanwhile, 30.0 inch 
troughing over lake superior deepens to 29.8 inches through tonight 
as a 29.7 inch low approaches from the northwest. troughing persists 
over the lake and gradually deepens to 29.7 inches through friday 
night. weak ridging near 29.9 inches returns on saturday extending 
from a weak high of 30.0 inches over eastern hudson bay. sunday, the 
high builds to 30.1 inches over quebec while 29.4 inch low pressure 
spins over northern saskatchewan. monday, the high builds to 30.3 
inches over the mouth of the st. lawrence river while a 29.6 inch 
low over northern manitoba extends troughing south over the great 
plains. 




lsz162-042000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
400 am edt thu jun 4 2026 /300 am cdt thu jun 4 2026/

.early this morning...south winds 5 to 15 knots. a chance of
showers and a slight chance of thunderstorms. waves calm to
2 feet. 
.today...south winds 5 to 15 knots. a chance of showers and a
slight chance of thunderstorms. waves calm to 2 feet. 
.tonight...south winds 5 to 15 knots veering southwest after
midnight. a slight chance of thunderstorms through midnight. a
chance of rain showers. waves calm to 2 feet. 
.friday...southwest winds 5 to 15 knots. a slight chance of
showers and thunderstorms by mid afternoon. waves calm to 2 feet.
.friday night...west winds 5 to 15 knots veering north after
midnight. waves calm to 2 feet. 
.saturday...east winds 5 to 15 knots. waves calm to 2 feet. 
.saturday night...northeast winds 5 to 15 knots. waves calm to
2 feet. 
.sunday...northeast winds 10 to 20 knots. waves building to 1 to
3 feet, then subsiding to calm to 2 feet. 
.monday...northeast winds 10 to 20 knots becoming east 5 to
15 knots. a chance of showers. waves calm to 2 feet. 

$$

fzus63 kmqt 040801
glfls 
expires:202606042000;;157275

open lake forecast for lake superior
national weather service marquette mi
400 am edt thu jun 4 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 of 30.2 inches over the ohio river valley shifts 
southeast and weakens to 30.1 inches today. meanwhile, 30.0 inch 
troughing over lake superior deepens to 29.8 inches through tonight 
as a 29.7 inch low approaches from the northwest. troughing persists 
over the lake and gradually deepens to 29.7 inches through friday 
night. weak ridging near 29.9 inches returns on saturday extending 
from a weak high of 30.0 inches over eastern hudson bay. sunday, the 
high builds to 30.1 inches over quebec while 29.4 inch low pressure 
spins over northern saskatchewan. monday, the high builds to 30.3 
inches over the mouth of the st. lawrence river while a 29.6 inch 
low over northern manitoba extends troughing south over the great 
plains. 




lsz263-042000-
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 am edt thu jun 4 2026

.early this morning...south winds 5 to 15 knots. a slight chance
of showers. waves calm to 2 feet. 
.today...south winds 5 to 15 knots. a chance of showers and a
slight chance of thunderstorms. waves calm to 2 feet. 
.tonight...south winds 5 to 15 knots veering west late. a slight
chance of thunderstorms through midnight. a chance of rain
showers. waves calm to 2 feet. 
.friday...southwest winds 5 to 15 knots. a slight chance of
showers and thunderstorms by mid afternoon. waves calm to 2 feet.
.friday night...southwest winds 5 to 15 knots veering north after
midnight. a slight chance of rain showers through midnight. waves
calm to 2 feet. 
.saturday...north winds less than 10 knots veering east by mid
afternoon. waves calm to 2 feet. 
.saturday night...east winds 5 to 15 knots. waves calm to 2 feet.
.sunday...northeast winds 10 to 20 knots veering southeast. waves
building to 1 to 3 feet, then subsiding to calm to 2 feet. 
.monday...east winds 5 to 15 knots veering southeast. a chance of
showers. waves building to 2 to 4 feet, then subsiding to 1 to
3 feet. 

$$