fzus63 kmqt 141402
glfls 
expires:202605142000;;546975

open lake forecast for lake superior
national weather service marquette mi
1002 am 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 today 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.



lsz162-142000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1002 am edt thu may 14 2026 /902 am cdt thu may 14 2026/

.rest of today...east winds 10 to 20 knots increasing to 15 to
25 knots late. waves calm to 2 feet building to 2 to 4 feet, then
subsiding to 1 to 3 feet. 
.tonight...east winds 10 to 20 knots becoming south 15 to
25 knots after midnight. a chance of rain showers. waves building
to 3 to 5 feet occasionally to 7 feet, then subsiding to 2 to
4 feet. 
.friday...southwest winds 15 to 25 knots increasing to 20 to
30 knots in the afternoon. waves subsiding to 3 to 6 feet
occasionally to 8 feet. 
.friday night...southwest winds 15 to 25 knots becoming west
10 to 20 knots after midnight. waves subsiding to 1 to 3 feet. 
.saturday...west winds 10 to 20 knots. waves building to 2 to
4 feet, then subsiding to calm to 2 feet. 
.saturday night...north winds 5 to 15 knots veering northeast
after midnight. waves calm to 2 feet. 
.sunday...northeast gales to 35 knots. a chance of rain showers.
a chance of thunderstorms. rain showers. waves building to 7 to
10 feet occasionally to 13 feet, then subsiding to 5 to 8 feet
occasionally to 10 feet. 
.monday...northeast winds 20 to 30 knots becoming northwest 10 to
20 knots. rain showers. waves subsiding to 2 to 4 feet. 

$$

fzus63 kmqt 141402
glfls 
expires:202605142000;;546976

open lake forecast for lake superior
national weather service marquette mi
1002 am 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 today 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.



lsz263-142000-
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-
1002 am edt thu may 14 2026

.rest of today...east winds less than 10 knots increasing to
10 to 20 knots. waves calm to 2 feet building to 1 to 3 feet. 
.tonight...southeast winds 15 to 25 knots veering south after
midnight, then increasing to 20 to 30 knots late. a chance of
rain showers through midnight. rain showers likely after
midnight. waves building to 3 to 6 feet occasionally to 8 feet. 
.friday...southwest winds 15 to 25 knots increasing to 20 to
30 knots in the afternoon. waves 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 3 to 5 feet
occasionally to 7 feet. 
.saturday...west winds 15 to 25 knots. waves subsiding to 2 to
4 feet. 
.saturday night...northeast winds 5 to 15 knots. waves subsiding
to calm to 2 feet. 
.sunday...northeast winds 20 to 30 knots becoming east gales to
35 knots. rain showers likely and a chance of thunderstorms.
waves building to 4 to 8 feet occasionally to 10 feet. 
.monday...east gales to 35 knots becoming west 15 to 25 knots.
rain showers. waves building to 5 to 8 feet occasionally to
10 feet, then subsiding to 3 to 6 feet occasionally to 8 feet. 

$$