fzus63 kmqt 060201
glfls 
expires:202606060800;;250473

open lake forecast for lake superior
national weather service marquette mi
1000 pm edt fri jun 5 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... 

a 29.7 inch low over northern ontario is extending 29.7 inch 
troughing over the lake this evening. the low moves slowly east into 
northern quebec at 29.6 inches by early saturday morning before 
tracking southeastwards towards the st. lawrence seaway throughout 
the rest of the day. meanwhile, weak 29.9 inch ridging moves over 
lake superior saturday afternoon as a 29.3 inch low pressure forms 
over the northern rockies. ridging over lake superior builds to 30.1 
inches by sunday as the low stretches into the northern plains. by 
monday afternoon, expect lake superior to be between a 29.8 inch 
trough over minnesota and 30.2 inch high pressure over new england. 
the troughing weakens to 29.9 inches before moving over lake 
superior on tuesday. pressure continues to fall over lake superior 
through wednesday as a colorado low lifts through the northern 
plains towards lake winnipeg, strengthening to 29.6 inches by 
wednesday night as the low deepens to 29.2 inches.




lsz162-060800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1000 pm edt fri jun 5 2026 /900 pm cdt fri jun 5 2026/

.rest of tonight...west winds 5 to 15 knots. a slight chance of
rain showers by midnight. patchy fog. waves calm to 2 feet. 
.saturday...west winds 5 to 15 knots backing southwest in the
afternoon, then backing east late. patchy fog through early
afternoon. 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 increasing to 15 to
25 knots by mid afternoon. waves building to 2 to 4 feet. 
.sunday night...northeast winds 10 to 20 knots. waves subsiding
to 1 to 3 feet. 
.monday...northeast winds 10 to 20 knots. a chance of showers
through early afternoon. a chance of thunderstorms. showers by
mid afternoon. waves subsiding to calm to 2 feet. 
.monday night...northeast winds 5 to 15 knots. showers likely
through midnight. a chance of thunderstorms. a chance of showers
after midnight. waves calm to 2 feet. 
.tuesday...northeast winds 5 to 15 knots veering east. waves calm
to 2 feet. 
.wednesday...northeast winds 10 to 20 knots. a chance of showers.
waves building to 1 to 3 feet, then subsiding to calm to 2 feet. 

$$

fzus63 kmqt 060201
glfls 
expires:202606060800;;250474

open lake forecast for lake superior
national weather service marquette mi
1000 pm edt fri jun 5 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... 

a 29.7 inch low over northern ontario is extending 29.7 inch 
troughing over the lake this evening. the low moves slowly east into 
northern quebec at 29.6 inches by early saturday morning before 
tracking southeastwards towards the st. lawrence seaway throughout 
the rest of the day. meanwhile, weak 29.9 inch ridging moves over 
lake superior saturday afternoon as a 29.3 inch low pressure forms 
over the northern rockies. ridging over lake superior builds to 30.1 
inches by sunday as the low stretches into the northern plains. by 
monday afternoon, expect lake superior to be between a 29.8 inch 
trough over minnesota and 30.2 inch high pressure over new england. 
the troughing weakens to 29.9 inches before moving over lake 
superior on tuesday. pressure continues to fall over lake superior 
through wednesday as a colorado low lifts through the northern 
plains towards lake winnipeg, strengthening to 29.6 inches by 
wednesday night as the low deepens to 29.2 inches.




lsz263-060800-
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-
1000 pm edt fri jun 5 2026

...dense fog advisory in effect until 11 am edt saturday...

.rest of tonight...southwest winds 5 to 15 knots veering west
after midnight. a slight chance of rain showers by midnight.
patchy dense fog. waves calm to 2 feet. 
.saturday...west winds less than 10 knots backing southwest in
the afternoon, then increasing to 5 to 15 knots late. patchy fog.
waves calm to 2 feet. 
.saturday night...east winds 5 to 15 knots. waves calm to 2 feet.
.sunday...east winds 5 to 15 knots becoming northeast 10 to
20 knots by mid afternoon. waves building to 2 to 4 feet. 
.sunday night...east winds 10 to 20 knots becoming southeast 5 to
15 knots after midnight. waves subsiding to calm to 2 feet. 
.monday...east winds 5 to 15 knots increasing to 10 to 20 knots
by mid afternoon. a chance of showers. waves building to 2 to
4 feet. 
.monday night...southeast winds 5 to 15 knots. showers likely and
a chance of thunderstorms. waves subsiding to 1 to 3 feet. 
.tuesday...northeast winds 5 to 15 knots veering east. waves
subsiding to calm to 2 feet. 
.wednesday...east winds 5 to 15 knots veering southeast. a chance
of showers. waves building to 1 to 3 feet. 

$$