fzus63 kmqt 140218 cca
glfls 
expires:202607140800;;928717

open lake forecast for lake superior...corrected
national weather service marquette mi
1018 pm edt mon jul 13 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... 

29.9 to 30.0 inch ridging remains over lake superior this evening 
into tuesday evening, before a weakening high pressure moving in 
from the canadian prairies strengthens the ridging to 30.1 inches on 
wednesday. the 30.1 inch ridging persists until friday morning. 
expect the ridging to retreat east towards the st. lawrence seaway 
and to weaken with time on friday. a low pressure of at least 29.8 
inches could impact the upper great lakes this weekend, although 
uncertainty remains high on the track and strength of it. 


lsz162-140800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1018 pm edt mon jul 13 2026 /918 pm cdt mon jul 13 2026/

.rest of tonight...southwest winds 20 to 30 knots diminishing to
15 to 25 knots after midnight. waves 3 to 6 feet occasionally to
8 feet subsiding to 2 to 4 feet. 
.tuesday...southwest winds 15 to 25 knots diminishing to 10 to
20 knots in the afternoon, then veering west late. waves
subsiding to 1 to 3 feet. 
.tuesday night...west winds 10 to 20 knots becoming north 5 to
15 knots after midnight, then backing northwest late. waves
subsiding to calm to 2 feet. 
.wednesday...northwest winds 5 to 15 knots backing southwest by
mid afternoon. waves calm to 2 feet. 
.wednesday night...west winds 5 to 15 knots veering northwest
after midnight. waves calm to 2 feet. 
.thursday...northeast winds 5 to 15 knots increasing to 10 to
20 knots by mid afternoon. waves calm to 2 feet. 
.thursday night...northeast winds 10 to 20 knots diminishing to
5 to 15 knots after midnight. a chance of showers and
thunderstorms. waves calm to 2 feet. 
.friday...northeast winds 10 to 20 knots. a chance of showers.
waves building to 2 to 4 feet, then subsiding to calm to 2 feet. 
.saturday...northeast winds 5 to 15 knots. waves calm to 2 feet. 

$$

fzus63 kmqt 140218 cca
glfls 
expires:202607140800;;928718

open lake forecast for lake superior...corrected
national weather service marquette mi
1018 pm edt mon jul 13 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... 

29.9 to 30.0 inch ridging remains over lake superior this evening 
into tuesday evening, before a weakening high pressure moving in 
from the canadian prairies strengthens the ridging to 30.1 inches on 
wednesday. the 30.1 inch ridging persists until friday morning. 
expect the ridging to retreat east towards the st. lawrence seaway 
and to weaken with time on friday. a low pressure of at least 29.8 
inches could impact the upper great lakes this weekend, although 
uncertainty remains high on the track and strength of it. 


lsz263-140800-
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-
1018 pm edt mon jul 13 2026

.rest of tonight...southwest winds 20 to 30 knots veering west
late. waves 5 to 8 feet occasionally to 10 feet subsiding to 3 to
6 feet occasionally to 8 feet. 
.tuesday...west winds 15 to 25 knots diminishing to 10 to
20 knots late. waves subsiding to 2 to 4 feet. 
.tuesday night...west winds 10 to 20 knots becoming northwest
5 to 15 knots after midnight. waves subsiding to calm to 2 feet. 
.wednesday...northwest winds less than 10 knots becoming
southwest 5 to 15 knots by mid afternoon. waves calm to 2 feet. 
.wednesday night...west winds 5 to 15 knots. waves calm to
2 feet. 
.thursday...north winds 5 to 15 knots veering east by mid
afternoon. waves calm to 2 feet. 
.thursday night...east winds 5 to 15 knots. a chance of showers.
a chance of thunderstorms after midnight. waves calm to 2 feet. 
.friday...east winds 10 to 20 knots backing northeast. a chance
of showers. waves building to 1 to 3 feet, then subsiding to calm
to 2 feet. 
.saturday...northeast winds 5 to 15 knots backing north. waves
calm to 2 feet. 

$$