fzus63 kmqt 111401
glfls 
expires:202607112000;;793282

open lake forecast for lake superior
national weather service marquette mi
1000 am edt sat jul 11 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... 

high pressure of 30.0 inches draped from hudson bay to lake superior 
this morning builds to 30.1 inches over the lake by sunday morning. 
this surface high then shifts south toward the lower great lakes as 
pressure falls over the lake to 29.9 inches by midnight on sunday. 
early next week a strong low of around 29.3 inches tracks northeast 
from the upper plains toward hudson bay, keeping pressure over lake 
superior at 29.9 inches through tuesday morning. wednesday, high 
pressure extending from the canadian prairies to the southern 
appalachians weakens slightly as the canadian low deepens to 29.1 
inches in northern quebec. lake superior remains under this high 
pressure wednesday into thursday at 30.0 inches.




lsz162-112000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1000 am edt sat jul 11 2026 /900 am cdt sat jul 11 2026/

.rest of today...southwest winds 5 to 15 knots backing southeast
late. a slight chance of showers by mid afternoon. waves calm to
2 feet. 
.tonight...southeast winds 5 to 15 knots veering southwest after
midnight. a slight chance of showers and thunderstorms after
midnight. waves calm to 2 feet. 
.sunday...southwest winds 5 to 15 knots increasing to 10 to
20 knots in the afternoon. a slight chance of showers and
thunderstorms. waves calm to 2 feet. 
.sunday night...southwest winds 15 to 25 knots. waves building to
2 to 4 feet, then subsiding to 1 to 3 feet. 
.monday...southwest winds 15 to 25 knots. waves building to 3 to
5 feet occasionally to 7 feet. 
.monday night...southwest winds 20 to 30 knots diminishing to
15 to 25 knots after midnight. waves subsiding to 2 to 4 feet. 
.tuesday...southwest winds 10 to 20 knots veering north. waves
subsiding to calm to 2 feet. 
.wednesday...northeast winds 5 to 15 knots. waves calm to 2 feet.

$$

fzus63 kmqt 111401
glfls 
expires:202607112000;;793283

open lake forecast for lake superior
national weather service marquette mi
1000 am edt sat jul 11 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... 

high pressure of 30.0 inches draped from hudson bay to lake superior 
this morning builds to 30.1 inches over the lake by sunday morning. 
this surface high then shifts south toward the lower great lakes as 
pressure falls over the lake to 29.9 inches by midnight on sunday. 
early next week a strong low of around 29.3 inches tracks northeast 
from the upper plains toward hudson bay, keeping pressure over lake 
superior at 29.9 inches through tuesday morning. wednesday, high 
pressure extending from the canadian prairies to the southern 
appalachians weakens slightly as the canadian low deepens to 29.1 
inches in northern quebec. lake superior remains under this high 
pressure wednesday into thursday at 30.0 inches.




lsz263-112000-
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 am edt sat jul 11 2026

.rest of today...southwest winds less than 10 knots increasing to
5 to 15 knots in the afternoon, then backing south late. waves
calm to 2 feet. 
.tonight...southeast winds 5 to 15 knots veering southwest after
midnight. a slight chance of showers and thunderstorms after
midnight. waves calm to 2 feet. 
.sunday...southwest winds 5 to 15 knots. a slight chance of
showers and thunderstorms. waves building to 1 to 3 feet. 
.sunday night...southwest winds 15 to 25 knots increasing to
20 to 30 knots after midnight. waves building to 3 to 5 feet
occasionally to 7 feet. 
.monday...southwest winds 15 to 25 knots increasing to 20 to
30 knots by mid afternoon. waves building to 4 to 7 feet
occasionally to 9 feet. 
.monday night...southwest winds 20 to 30 knots. waves subsiding
to 3 to 6 feet occasionally to 8 feet. 
.tuesday...west winds 20 to 30 knots becoming north 10 to
20 knots. waves subsiding to calm to 2 feet. 
.wednesday...north winds 5 to 15 knots veering northeast. waves
calm to 2 feet. 

$$