fzus63 kmqt 062001
glfls 
expires:202507070800;;989579

open lake forecast for lake superior
national weather service marquette mi
401 pm edt sun jul 6 2025

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 broad 30.0 inch high pressure ridge is extending across lake 
superior, northern ontario, and manitoba this evening. this high 
maintains its strength and only slowly drifts east through tuesday 
evening. tuesday night into wednesday, a 29.9 inch low moves into 
the great lakes region from the southwest, though 30.0 inch ridging 
continues over lake superior until thursday morning. a low pressure 
moving into hudson bay thursday night is expected to bring a trough 
to the western extent of lake superior friday into next weekend.



lsz162-070800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
401 pm edt sun jul 6 2025 /301 pm cdt sun jul 6 2025/

.late this afternoon...northeast winds 10 to 20 knots. waves 2 to
4 feet. 
.tonight...northeast winds 5 to 15 knots backing north after
midnight. waves subsiding to calm to 2 feet. 
.monday...east winds 5 to 15 knots. waves calm to 2 feet. 
.monday night...east winds 5 to 15 knots backing northeast after
midnight. a chance of showers through midnight. a chance of
thunderstorms. showers after midnight. waves calm to 2 feet. 
.tuesday...northeast winds 5 to 15 knots increasing to 10 to
20 knots by mid afternoon. a chance of showers and a slight
chance of thunderstorms. waves calm to 2 feet. 
.tuesday night...northeast winds 5 to 15 knots. waves calm to
2 feet. 
.wednesday...northeast winds 5 to 15 knots veering east by mid
afternoon. waves calm to 2 feet. 
.wednesday night...northeast winds 5 to 15 knots. waves calm to
2 feet. 
.thursday...east winds 5 to 15 knots backing northeast. a chance
of showers. waves calm to 2 feet. 
.friday...northeast winds 10 to 20 knots backing northwest.
showers likely. a chance of showers. waves calm to 2 feet. 

$$

fzus63 kmqt 062001
glfls 
expires:202507070800;;989580

open lake forecast for lake superior
national weather service marquette mi
401 pm edt sun jul 6 2025

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 broad 30.0 inch high pressure ridge is extending across lake 
superior, northern ontario, and manitoba this evening. this high 
maintains its strength and only slowly drifts east through tuesday 
evening. tuesday night into wednesday, a 29.9 inch low moves into 
the great lakes region from the southwest, though 30.0 inch ridging 
continues over lake superior until thursday morning. a low pressure 
moving into hudson bay thursday night is expected to bring a trough 
to the western extent of lake superior friday into next weekend.



lsz263-070800-
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-
401 pm edt sun jul 6 2025

.late this afternoon...east winds 10 to 20 knots. waves 2 to
4 feet. 
.tonight...northeast winds 5 to 15 knots backing northwest after
midnight, then becoming north less than 10 knots late. waves
subsiding to calm to 2 feet. 
.monday...northeast winds less than 10 knots becoming east 5 to
15 knots late. waves calm to 2 feet. 
.monday night...east winds 5 to 15 knots. a slight chance of
showers through midnight, then showers likely and a slight chance
of thunderstorms after midnight. waves calm to 2 feet. 
.tuesday...east winds 5 to 15 knots backing northeast by mid
afternoon. a slight chance of thunderstorms through early
afternoon. a chance of showers. waves calm to 2 feet. 
.tuesday night...northeast winds 5 to 15 knots backing north
after midnight. waves calm to 2 feet. 
.wednesday...north winds 5 to 15 knots. waves calm to 2 feet. 
.wednesday night...east winds less than 10 knots. waves calm to
2 feet. 
.thursday...east winds 5 to 15 knots. waves calm to 2 feet. 
.friday...east winds 5 to 15 knots veering west. a chance of
showers. waves calm to 2 feet. 

$$