fzus63 kmqt 060201
glfls 
expires:202605060800;;082330

open lake forecast for lake superior
national weather service marquette mi
1001 pm edt tue may 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 29.3 inch low over james bay lifts into northern quebec tonight as 
30.2 inch ridging builds east of the canadian rockies. wednesday, 
the high pressure over the canadian prairie splits and moves to the 
canadian four corners and the southern plains at 30.0 inches and 
30.2 inches respectively. by thursday afternoon, lake superior is 
projected to be between a 29.5 inch low over hudson bay, a 29.4 inch 
low over the mouth of the st lawrence river, a low of 29.7 inches 
over the black hills, a high of 30.1 inches over oklahoma, and a 
weak 29.9 inch high over the saskatchewan/manitoba line. the hudson 
bay and black hills lows work to pass a 29.8 inch trough over lake 
superior thursday night into friday, with the lows consolidating 
over quebec by saturday, leaving remnant 29.7 inch troughing over 
lake superior. high pressure toi 30.1 inches builds back over the 
plains by sunday.



lsz162-060800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1001 pm edt tue may 5 2026 /901 pm cdt tue may 5 2026/

.rest of tonight...northwest winds 10 to 20 knots. sprinkles and
flurries by midnight. waves calm to 2 feet. 
.wednesday...west winds 10 to 20 knots diminishing to 5 to
15 knots in the afternoon, then backing southwest late. flurries
through early afternoon. sprinkles. waves building to 1 to
3 feet. 
.wednesday night...west winds 5 to 15 knots. waves subsiding to
calm to 2 feet. 
.thursday...west winds 5 to 15 knots backing southwest by mid
afternoon. waves calm to 2 feet. 
.thursday night...southwest winds 5 to 15 knots veering northwest
after midnight. waves calm to 2 feet. 
.friday...west winds 5 to 15 knots backing southwest by mid
afternoon. waves calm to 2 feet. 
.friday night...west winds 5 to 15 knots. waves calm to 2 feet. 
.saturday...west winds 5 to 15 knots veering northwest. waves
calm to 2 feet. 
.sunday...west winds 5 to 15 knots. waves calm to 2 feet. 

$$

fzus63 kmqt 060201
glfls 
expires:202605060800;;082331

open lake forecast for lake superior
national weather service marquette mi
1001 pm edt tue may 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 29.3 inch low over james bay lifts into northern quebec tonight as 
30.2 inch ridging builds east of the canadian rockies. wednesday, 
the high pressure over the canadian prairie splits and moves to the 
canadian four corners and the southern plains at 30.0 inches and 
30.2 inches respectively. by thursday afternoon, lake superior is 
projected to be between a 29.5 inch low over hudson bay, a 29.4 inch 
low over the mouth of the st lawrence river, a low of 29.7 inches 
over the black hills, a high of 30.1 inches over oklahoma, and a 
weak 29.9 inch high over the saskatchewan/manitoba line. the hudson 
bay and black hills lows work to pass a 29.8 inch trough over lake 
superior thursday night into friday, with the lows consolidating 
over quebec by saturday, leaving remnant 29.7 inch troughing over 
lake superior. high pressure toi 30.1 inches builds back over the 
plains by sunday.



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-
1001 pm edt tue may 5 2026

.rest of tonight...northwest winds 5 to 15 knots. sprinkles and
flurries by midnight. waves 2 to 4 feet subsiding to calm to
2 feet. 
.wednesday...northwest winds 5 to 15 knots becoming west 10 to
20 knots in the afternoon. flurries through early afternoon.
sprinkles. a slight chance of snow showers by mid afternoon.
waves building to 2 to 4 feet, then subsiding to 1 to 3 feet. 
.wednesday night...west winds 5 to 15 knots. waves subsiding to
calm to 2 feet. 
.thursday...west winds 5 to 15 knots backing southwest by mid
afternoon. waves calm to 2 feet. 
.thursday night...southwest winds 5 to 15 knots. waves calm to
2 feet. 
.friday...west winds 5 to 15 knots backing southwest by mid
afternoon. waves calm to 2 feet. 
.friday night...southwest winds 5 to 15 knots veering west after
midnight. waves calm to 2 feet. 
.saturday...west winds 5 to 15 knots veering northwest. waves
calm to 2 feet. 
.sunday...west winds 5 to 15 knots. waves calm to 2 feet. 

$$