fzus63 kmqt 081401
glfls 
expires:202608082000;;828645

open lake forecast for lake superior
national weather service marquette mi
1001 am edt sat aug 8 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...

upper michigan is situated between a 29.6 inch quebec low and a 30.0 
inch high centered over iowa. this will drive weak and ill-defined 
29.9 inch ridging/troughing over lake superior through monday night 
as the high moves southeast. weak ridging of 30.0 inches, extending 
between a 30.2 inch bermuda high and 30.0 inch ridging over the 
western canadian provinces, returns for monday and tuesday before 
decreasing to 29.9 inches on wednesday. a 29.8 inch trough moves 
over the lake wednesday night before ridging of 30.0 inches returns 
on thursday from the canadian prairie.




lsz162-082000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1001 am edt sat aug 8 2026 /901 am cdt sat aug 8 2026/

.rest of today...southwest winds 10 to 20 knots increasing to
15 to 25 knots late. waves calm to 2 feet building to 1 to
3 feet. 
.tonight...southwest winds 10 to 20 knots becoming west 5 to
15 knots after midnight, then veering north late. a chance of
showers. a slight chance of thunderstorms after midnight. waves
subsiding to calm to 2 feet. 
.sunday...southwest winds 5 to 15 knots. a slight chance of
showers through early afternoon. waves calm to 2 feet. 
.sunday night...west winds 5 to 15 knots. waves calm to 2 feet. 
.monday...west winds 5 to 15 knots backing southwest by mid
afternoon. waves calm to 2 feet. 
.monday night...west winds 5 to 15 knots veering north after
midnight. waves calm to 2 feet. 
.tuesday...southwest winds 5 to 15 knots veering north. waves
calm to 2 feet. 
.wednesday...west winds 5 to 15 knots veering northwest. waves
calm to 2 feet. 

$$

fzus63 kmqt 081401
glfls 
expires:202608082000;;828646

open lake forecast for lake superior
national weather service marquette mi
1001 am edt sat aug 8 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...

upper michigan is situated between a 29.6 inch quebec low and a 30.0 
inch high centered over iowa. this will drive weak and ill-defined 
29.9 inch ridging/troughing over lake superior through monday night 
as the high moves southeast. weak ridging of 30.0 inches, extending 
between a 30.2 inch bermuda high and 30.0 inch ridging over the 
western canadian provinces, returns for monday and tuesday before 
decreasing to 29.9 inches on wednesday. a 29.8 inch trough moves 
over the lake wednesday night before ridging of 30.0 inches returns 
on thursday from the canadian prairie.




lsz263-082000-
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 sat aug 8 2026

.rest of today...west winds 5 to 15 knots becoming southwest
15 to 25 knots in the afternoon. waves calm to 2 feet building to
2 to 4 feet. 
.tonight...southwest winds 10 to 20 knots becoming west 5 to
15 knots after midnight. a chance of showers. a slight chance of
thunderstorms after midnight. waves subsiding to calm to 2 feet. 
.sunday...southwest winds 5 to 15 knots veering west in the
afternoon, then backing southwest late. a chance of showers
through early afternoon. waves calm to 2 feet. 
.sunday night...southwest winds 5 to 15 knots becoming west less
than 10 knots after midnight. waves calm to 2 feet. 
.monday...west winds 5 to 15 knots backing southwest by mid
afternoon. waves calm to 2 feet. 
.monday night...southwest winds 5 to 15 knots becoming west less
than 10 knots after midnight. waves calm to 2 feet. 
.tuesday...southwest winds 5 to 15 knots. waves calm to 2 feet. 
.wednesday...west winds 5 to 15 knots veering northwest. waves
calm to 2 feet. 

$$