fzus63 kmqt 022001
glfls 
expires:202608030800;;515106

open lake forecast for lake superior
national weather service marquette mi
401 pm edt sun aug 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...

ridging of around 30.0 inches over lake superior persists into 
monday as a 29.7 inch low over the ohio river valley today tracks 
into southern quebec and deepens to 29.5 inches by monday afternoon. 
a 29.8 inch trough moves over the lake monday night into tuesday as 
a 29.4 inch low tracks over hudson bay. ridging returns on wednesday 
as 30.0 inch high pressure builds into the great lakes from the 
northern plains.




lsz162-030800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
401 pm edt sun aug 2 2026 /301 pm cdt sun aug 2 2026/

.late this afternoon...northeast winds 10 to 20 knots. waves calm
to 2 feet. 
.tonight...northeast winds 10 to 20 knots diminishing to 5 to
15 knots after midnight, then veering east late. waves calm to
2 feet. 
.monday...east winds 5 to 15 knots. waves calm to 2 feet. 
.monday night...east winds 5 to 15 knots becoming south 10 to
20 knots after midnight, then becoming southwest 15 to 25 knots
late. a chance of showers and a slight chance of thunderstorms
after midnight. waves building to 2 to 4 feet. 
.tuesday...west winds 15 to 25 knots backing southwest by mid
afternoon. a slight chance of showers through early afternoon.
waves subsiding to 1 to 3 feet, then building to 2 to 4 feet. 
.tuesday night...west winds 10 to 20 knots diminishing to 5 to
15 knots after midnight. waves subsiding to calm to 2 feet. 
.wednesday...west winds 5 to 15 knots becoming southwest 10 to
20 knots by mid afternoon. waves calm to 2 feet. 
.wednesday night...southwest winds 5 to 15 knots. waves calm to
2 feet. 
.thursday...southwest winds 10 to 20 knots diminishing to 5 to
15 knots. waves calm to 2 feet. 
.friday...southwest winds 10 to 20 knots veering west. waves
building to 1 to 3 feet, then subsiding to calm to 2 feet. 

$$

fzus63 kmqt 022001
glfls 
expires:202608030800;;515107

open lake forecast for lake superior
national weather service marquette mi
401 pm edt sun aug 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...

ridging of around 30.0 inches over lake superior persists into 
monday as a 29.7 inch low over the ohio river valley today tracks 
into southern quebec and deepens to 29.5 inches by monday afternoon. 
a 29.8 inch trough moves over the lake monday night into tuesday as 
a 29.4 inch low tracks over hudson bay. ridging returns on wednesday 
as 30.0 inch high pressure builds into the great lakes from the 
northern plains.




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-
401 pm edt sun aug 2 2026

.late this afternoon...northeast winds 5 to 15 knots. waves calm
to 2 feet. 
.tonight...east winds 5 to 15 knots veering southeast late. waves
calm to 2 feet. 
.monday...south winds 5 to 15 knots backing east late. waves calm
to 2 feet. 
.monday night...southeast winds 10 to 20 knots becoming south
15 to 25 knots after midnight. a slight chance of showers after
midnight. waves building to 3 to 5 feet occasionally to 7 feet. 
.tuesday...southwest winds 15 to 25 knots. a slight chance of
showers through early afternoon. waves subsiding to 2 to 4 feet,
then building to 3 to 5 feet occasionally to 7 feet. 
.tuesday night...west winds 15 to 25 knots diminishing to 5 to
15 knots after midnight. waves subsiding to calm to 2 feet. 
.wednesday...west winds 10 to 20 knots backing southwest by mid
afternoon. waves building to 1 to 3 feet. 
.wednesday night...south winds 10 to 20 knots becoming southwest
5 to 15 knots after midnight. waves subsiding to calm to 2 feet. 
.thursday...southwest winds 15 to 25 knots diminishing to 10 to
20 knots. waves building to 1 to 3 feet, then subsiding to calm
to 2 feet. 
.friday...southwest winds 15 to 25 knots becoming west 10 to
20 knots. waves building to 1 to 3 feet, then subsiding to calm
to 2 feet. 

$$