fzus63 kmqt 150201
glfls 
expires:202605150800;;575072

open lake forecast for lake superior
national weather service marquette mi
1001 pm edt thu may 14 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... 

30.1 inch ridging over lake superior will be pressed southeast 
tonight into friday as a 29.1 inch low moves from the canadian 
prairies to northern ontario. this low is expected to bring 
troughing of 29.6 inches over lake superior late friday into 
saturday as it tracks to near james bay at 29.2 inches by saturday 
morning. ridging of 30.1 inches builds over the lake from northern 
ontario saturday night into sunday. this is followed by another 29.7 
inch trough extending northeast toward the upper great lakes from 
the central plains by monday midday, which lingers over the area 
through tuesday.



lsz162-150800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1001 pm edt thu may 14 2026 /901 pm cdt thu may 14 2026/

.rest of tonight...south winds 15 to 25 knots. showers likely by
midnight, then a chance of showers after midnight. waves 3 to
6 feet occasionally to 8 feet. 
.friday...southwest winds 15 to 25 knots. waves subsiding to 3 to
6 feet occasionally to 8 feet. 
.friday night...southwest winds 15 to 25 knots diminishing to
10 to 20 knots after midnight, then veering west late. waves
subsiding to 1 to 3 feet. 
.saturday...west winds 10 to 20 knots backing southwest by mid
afternoon. waves subsiding to calm to 2 feet, then building to
1 to 3 feet. 
.saturday night...northeast winds 5 to 15 knots increasing to
10 to 20 knots after midnight. waves building to 1 to 3 feet. 
.sunday...northeast winds 20 to 30 knots increasing to gales to
35 knots by mid afternoon. rain showers likely by mid afternoon.
waves building to 8 to 11 feet occasionally to 14 feet. 
.sunday night...northeast gales to 35 knots diminishing to 20 to
30 knots after midnight. rain showers and a chance of
thunderstorms. waves subsiding to 4 to 7 feet occasionally to
9 feet. 
.monday...south winds 10 to 20 knots becoming northeast 20 to
30 knots. rain showers and a chance of thunderstorms. waves
subsiding to 1 to 3 feet, then building to 5 to 8 feet
occasionally to 10 feet. 
.tuesday...west gales to 35 knots diminishing to 20 to 30 knots.
a chance of rain showers. waves building to 6 to 9 feet
occasionally to 11 feet, then subsiding to 2 to 4 feet. 

$$

fzus63 kmqt 150201
glfls 
expires:202605150800;;575073

open lake forecast for lake superior
national weather service marquette mi
1001 pm edt thu may 14 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... 

30.1 inch ridging over lake superior will be pressed southeast 
tonight into friday as a 29.1 inch low moves from the canadian 
prairies to northern ontario. this low is expected to bring 
troughing of 29.6 inches over lake superior late friday into 
saturday as it tracks to near james bay at 29.2 inches by saturday 
morning. ridging of 30.1 inches builds over the lake from northern 
ontario saturday night into sunday. this is followed by another 29.7 
inch trough extending northeast toward the upper great lakes from 
the central plains by monday midday, which lingers over the area 
through tuesday.



lsz263-150800-
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-
1001 pm edt thu may 14 2026

.rest of tonight...south winds 15 to 25 knots increasing to 20 to
30 knots after midnight. a chance of rain showers by midnight.
rain showers likely after midnight. waves 3 to 5 feet
occasionally to 7 feet building to 4 to 7 feet occasionally to
9 feet. 
.friday...south winds 20 to 30 knots veering southwest in the
afternoon. waves subsiding to 3 to 6 feet occasionally to 8 feet,
then building to 4 to 7 feet occasionally to 9 feet. 
.friday night...southwest winds 15 to 25 knots diminishing to
10 to 20 knots after midnight. waves subsiding to 2 to 4 feet. 
.saturday...west winds 10 to 20 knots backing southwest by mid
afternoon. waves subsiding to 1 to 3 feet. 
.saturday night...northeast winds 5 to 15 knots veering east
after midnight. waves subsiding to calm to 2 feet, then building
to 1 to 3 feet. 
.sunday...northeast winds 15 to 25 knots becoming east 20 to
30 knots by mid afternoon. a chance of rain showers by mid
afternoon. waves building to 6 to 9 feet occasionally to 11 feet.
.sunday night...east winds 20 to 30 knots. rain showers and a
chance of thunderstorms. waves subsiding to 4 to 7 feet
occasionally to 9 feet. 
.monday...south winds 10 to 20 knots becoming northeast gales to
35 knots. rain showers. waves subsiding to 2 to 4 feet, then
building to 5 to 8 feet occasionally to 10 feet. 
.tuesday...west gales to 40 knots. a chance of rain showers.
waves building to 9 to 12 feet occasionally to 15 feet, then
subsiding to 6 to 9 feet occasionally to 11 feet. 

$$