fzus63 kmqt 051401
glfls 
expires:202606052000;;223354

open lake forecast for lake superior
national weather service marquette mi
1000 am 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 northwest ontario is extending 29.8 inch 
troughing over lake superior this morning. the low moves slowly east 
along the northern shores of the lake today while deepening to 29.6 
inches. by early saturday morning, the low moves into quebec, 
shifting southeastwards towards the st. lawrence seaway through the 
day as weak 29.9 inch ridging moves over lake superior late. in the 
meantime, a 29.3 inch low pressure forms in the lee of the rockies. 
ridging over lake superior builds to 30.1 inches by sunday as the 
colorado low weakens to 29.4 inches and moves into the western 
dakotas. 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 second colorado low moves in, 
reaching 29.6 inches by late wednesday.




lsz263-052000-
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 am edt fri jun 5 2026

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

$$

fzus63 kmqt 051401
glfls 
expires:202606052000;;223353

open lake forecast for lake superior
national weather service marquette mi
1000 am 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 northwest ontario is extending 29.8 inch 
troughing over lake superior this morning. the low moves slowly east 
along the northern shores of the lake today while deepening to 29.6 
inches. by early saturday morning, the low moves into quebec, 
shifting southeastwards towards the st. lawrence seaway through the 
day as weak 29.9 inch ridging moves over lake superior late. in the 
meantime, a 29.3 inch low pressure forms in the lee of the rockies. 
ridging over lake superior builds to 30.1 inches by sunday as the 
colorado low weakens to 29.4 inches and moves into the western 
dakotas. 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 second colorado low moves in, 
reaching 29.6 inches by late wednesday.




lsz162-052000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1001 am edt fri jun 5 2026 /901 am cdt fri jun 5 2026/

.rest of today...southwest winds 5 to 15 knots. a slight chance
of showers and thunderstorms by mid afternoon. waves calm to
2 feet. 
.tonight...west winds 5 to 15 knots veering northwest late. a
slight chance of showers and thunderstorms through midnight.
waves calm to 2 feet. 
.saturday...west winds 5 to 15 knots backing south in the
afternoon, then backing east late. waves calm to 2 feet. 
.saturday night...east winds 5 to 15 knots backing northeast
after midnight. waves calm to 2 feet. 
.sunday...northeast winds 10 to 20 knots. waves building to 2 to
4 feet. 
.sunday night...northeast winds 10 to 20 knots diminishing to
5 to 15 knots after midnight. waves subsiding to calm to 2 feet. 
.monday...northeast winds 10 to 20 knots diminishing to 5 to
15 knots. a chance of showers. showers likely. waves calm to
2 feet. 
.tuesday...northeast winds 5 to 15 knots. waves calm to 2 feet. 

$$