fzus63 kmqt 142001
glfls 
expires:202604150800;;367582

open lake forecast for lake superior
national weather service marquette mi
400 pm edt tue apr 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...

weak ridging of around 29.8 to 29.9 inches moves back over lake 
superior from northern ontario tonight through wednesday before 
another low from the central plains lifts through lower michigan or 
closer to the straits at around 29.7 inches. ridging increases to 
29.8 inches over lake superior later in the day thursday before 
troughing of 29.4 to 29.6 inches moves across the lake friday 
through saturday. this deepens further to 29.0 inches over far 
northern quebec by sunday morning. 30.2 inch ridging builds in over 
lake superior for sunday night.



lsz162-150800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
400 pm edt tue apr 14 2026 /300 pm cdt tue apr 14 2026/

...dense fog advisory in effect from 11 pm edt /10 pm cdt/ this
evening to 11 am edt /10 am cdt/ wednesday...

.late this afternoon...northeast winds 5 to 15 knots. patchy fog.
waves 1 to 3 feet subsiding to calm to 2 feet. 
.tonight...northeast winds 5 to 15 knots backing north after
midnight. patchy fog through midnight, then areas of dense fog
after midnight. waves calm to 2 feet. 
.wednesday...east winds 5 to 15 knots backing northeast in the
afternoon. areas of fog. waves calm to 2 feet. 
.wednesday night...northeast winds 5 to 15 knots. patchy fog
through midnight. waves calm to 2 feet. 
.thursday...northeast winds 5 to 15 knots. waves calm to 2 feet. 
.thursday night...northeast winds 10 to 20 knots. waves building
to 1 to 3 feet. 
.friday...northeast winds 10 to 20 knots. a chance of rain
showers by mid afternoon. waves building to 3 to 5 feet
occasionally to 7 feet. 
.friday night...north winds 15 to 25 knots becoming northwest
20 to 30 knots after midnight. rain showers and a chance of
thunderstorms through midnight, then a chance of rain showers
after midnight. waves building to 4 to 8 feet occasionally to
10 feet. 
.saturday...west winds 20 to 30 knots becoming northwest gales to
35 knots. a chance of rain showers. a chance of snow showers.
waves building to 6 to 9 feet occasionally to 11 feet. 
.sunday...northwest gales to 35 knots diminishing to 5 to
15 knots. waves subsiding to 1 to 3 feet. 

$$

fzus63 kmqt 142001
glfls 
expires:202604150800;;367583

open lake forecast for lake superior
national weather service marquette mi
400 pm edt tue apr 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...

weak ridging of around 29.8 to 29.9 inches moves back over lake 
superior from northern ontario tonight through wednesday before 
another low from the central plains lifts through lower michigan or 
closer to the straits at around 29.7 inches. ridging increases to 
29.8 inches over lake superior later in the day thursday before 
troughing of 29.4 to 29.6 inches moves across the lake friday 
through saturday. this deepens further to 29.0 inches over far 
northern quebec by sunday morning. 30.2 inch ridging builds in over 
lake superior for sunday night.



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-
400 pm edt tue apr 14 2026

...dense fog advisory in effect from 11 pm this evening to 11 am
edt wednesday...

.late this afternoon...northeast winds 5 to 15 knots. patchy fog.
a slight chance of rain showers and drizzle. waves calm to
2 feet. 
.tonight...northeast winds 5 to 15 knots becoming north less than
10 knots after midnight. areas of dense fog. a slight chance of
drizzle. waves calm to 2 feet. 
.wednesday...northeast winds less than 10 knots. a slight chance
of drizzle through early afternoon. areas of dense fog through
early afternoon, then patchy fog by mid afternoon. waves calm to
2 feet. 
.wednesday night...east winds less than 10 knots backing
northeast late. patchy fog through midnight. a slight chance of
rain showers through midnight. waves calm to 2 feet. 
.thursday...northeast winds less than 10 knots increasing to 5 to
15 knots by mid afternoon. waves calm to 2 feet. 
.thursday night...east winds 5 to 15 knots. waves building to
2 to 4 feet. 
.friday...east winds 10 to 20 knots increasing to 15 to 25 knots
by mid afternoon. a chance of rain showers by mid afternoon.
waves building to 3 to 6 feet occasionally to 8 feet. 
.friday night...south winds 20 to 30 knots veering west after
midnight. a chance of thunderstorms through midnight. rain
showers. waves building to 6 to 9 feet occasionally to 11 feet. 
.saturday...west gales to 35 knots veering northwest. a chance of
rain showers. a chance of snow showers. waves building to 10 to
14 feet occasionally to 18 feet. 
.sunday...northwest gales to 35 knots diminishing to 10 to
20 knots. waves subsiding to 4 to 7 feet occasionally to 9 feet. 

$$