fzus63 kmqt 030201
glfls 
expires:202605030800;;921222

open lake forecast for lake superior
national weather service marquette mi
1001 pm edt sat may 2 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...

29.8 inch troughing over the lake this evening deepens to 29.6 
inches by sunday morning as a low over western minnesota lifts into 
northern ontario. a deepening 29.3 inch low then digs over the 
canadian prairies towards the lake sunday and sunday night before 
just missing to the north at 29.0 inches monday morning; 
nevertheless, troughing deepens to 29.2 inches over northern lake 
superior monday morning. the low lifts into james bay by monday 
evening as 30.1 inch ridging builds just to the east of the canadian 
rockies. as the high pressure ridging shifts to the canadian 
prairies tuesday and wednesday, the now 29.2 inch low continues 
lifting into far northern quebec. we can thus expect ridging to 
slowly build back over lake superior to around 29.9 to 30.0 inches 
by the middle of next week as the ridging spreads into the rest of 
the central conus. the ridging over lake superior does look to 
weaken to around 29.8 to 29.9 inches by thursday night and friday as 
the upper great lakes become sandwiched between a low just off of 
the new england coast and troughing on the lee of the rockies.



lsz162-030800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1001 pm edt sat may 2 2026 /901 pm cdt sat may 2 2026/

.rest of tonight...northeast winds 5 to 15 knots backing
northwest late. a chance of rain showers. waves calm to 2 feet. 
.sunday...west winds 5 to 15 knots increasing to 10 to 20 knots
in the afternoon, then becoming southwest 5 to 15 knots late.
waves calm to 2 feet. 
.sunday night...southwest winds 10 to 20 knots increasing to
20 to 30 knots. a chance of rain showers. waves building to 3 to
5 feet occasionally to 7 feet. 
.monday...west winds 20 to 30 knots diminishing to 15 to 25 knots
by mid afternoon. a chance of showers. waves subsiding to 2 to
4 feet. 
.monday night...northwest winds 10 to 20 knots backing west after
midnight. waves subsiding to calm to 2 feet. 
.tuesday...west winds 10 to 20 knots. waves calm to 2 feet. 
.tuesday night...northwest winds 5 to 15 knots. waves calm to
2 feet. 
.wednesday...southwest winds 5 to 15 knots veering northwest.
waves calm to 2 feet. 
.thursday...southwest winds 5 to 15 knots veering west. waves
calm to 2 feet. 

$$

fzus63 kmqt 030201
glfls 
expires:202605030800;;921223

open lake forecast for lake superior
national weather service marquette mi
1001 pm edt sat may 2 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...

29.8 inch troughing over the lake this evening deepens to 29.6 
inches by sunday morning as a low over western minnesota lifts into 
northern ontario. a deepening 29.3 inch low then digs over the 
canadian prairies towards the lake sunday and sunday night before 
just missing to the north at 29.0 inches monday morning; 
nevertheless, troughing deepens to 29.2 inches over northern lake 
superior monday morning. the low lifts into james bay by monday 
evening as 30.1 inch ridging builds just to the east of the canadian 
rockies. as the high pressure ridging shifts to the canadian 
prairies tuesday and wednesday, the now 29.2 inch low continues 
lifting into far northern quebec. we can thus expect ridging to 
slowly build back over lake superior to around 29.9 to 30.0 inches 
by the middle of next week as the ridging spreads into the rest of 
the central conus. the ridging over lake superior does look to 
weaken to around 29.8 to 29.9 inches by thursday night and friday as 
the upper great lakes become sandwiched between a low just off of 
the new england coast and troughing on the lee of the rockies.



lsz263-030800-
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 sat may 2 2026

.rest of tonight...south winds 5 to 15 knots. a chance of rain
showers. waves calm to 2 feet. 
.sunday...west winds 5 to 15 knots. a slight chance of rain
showers through early afternoon. waves building to 1 to 3 feet. 
.sunday night...southwest winds 5 to 15 knots increasing to 20 to
30 knots. a slight chance of rain showers after midnight. waves
building to 3 to 6 feet occasionally to 8 feet. 
.monday...west winds 20 to 30 knots diminishing to 15 to 25 knots
by mid afternoon. a chance of rain showers. waves building to
4 to 7 feet occasionally to 9 feet, then subsiding to 3 to 6 feet
occasionally to 8 feet. 
.monday night...west winds 10 to 20 knots veering northwest after
midnight. waves subsiding to 2 to 4 feet. 
.tuesday...west winds 5 to 15 knots increasing to 10 to 20 knots
by mid afternoon. waves subsiding to 1 to 3 feet. 
.tuesday night...west winds 5 to 15 knots veering northwest after
midnight. waves subsiding to calm to 2 feet. 
.wednesday...west winds 5 to 15 knots. waves calm to 2 feet. 
.thursday...west winds 5 to 15 knots. waves calm to 2 feet. 

$$