fzus63 kmqt 022003
glfls 
expires:202610030800;;427272

open lake forecast for lake superior
national weather service marquette mi
402 pm edt fri oct 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...

high pressure of 30.3 inches over the plains this afternoon shifts 
east to the great lakes tonight through saturday. a weak 29.9 inch 
trough skirts along lake superior's north shore saturday night and 
sunday, with 30.3 inch high pressure quickly returning sunday night 
into monday. ridging remains in the area until tuesday morning 
before being replaced by troughing of at least 29.7 inches tuesday 
evening/wednesday morning.




lsz162-030800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
402 pm edt fri oct 2 2026 /302 pm cdt fri oct 2 2026/

.late this afternoon...southwest winds 5 to 15 knots. waves calm
to 2 feet. 
.tonight...southwest winds 5 to 15 knots diminishing to less than
10 knots after midnight, then becoming south 5 to 15 knots late.
waves calm to 2 feet. 
.saturday...south winds 5 to 15 knots increasing to 15 to
25 knots. a chance of showers. waves building to 1 to 3 feet. 
.saturday night...south winds 10 to 20 knots becoming west 15 to
25 knots after midnight. a chance of showers through midnight.
waves building to 2 to 4 feet, then subsiding to 1 to 3 feet. 
.sunday...northwest winds 15 to 25 knots becoming west 10 to
20 knots by mid afternoon. waves building to 3 to 5 feet
occasionally to 7 feet, then subsiding to 1 to 3 feet. 
.sunday night...northwest winds 10 to 20 knots diminishing to
5 to 15 knots after midnight. waves subsiding to calm to 2 feet. 
.monday...northwest winds 5 to 15 knots backing south by mid
afternoon. waves calm to 2 feet. 
.monday night...southeast winds 5 to 15 knots becoming south
10 to 20 knots after midnight. waves building to 1 to 3 feet. 
.tuesday...south winds 15 to 25 knots veering west. waves
building to 2 to 4 feet, then subsiding to 1 to 3 feet. 
.wednesday...west winds 10 to 20 knots. waves subsiding to calm
to 2 feet. 

$$

fzus63 kmqt 022003
glfls 
expires:202610030800;;427273

open lake forecast for lake superior
national weather service marquette mi
402 pm edt fri oct 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...

high pressure of 30.3 inches over the plains this afternoon shifts 
east to the great lakes tonight through saturday. a weak 29.9 inch 
trough skirts along lake superior's north shore saturday night and 
sunday, with 30.3 inch high pressure quickly returning sunday night 
into monday. ridging remains in the area until tuesday morning 
before being replaced by troughing of at least 29.7 inches tuesday 
evening/wednesday morning.




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-
402 pm edt fri oct 2 2026

.late this afternoon...west winds 5 to 15 knots. waves 1 to
3 feet subsiding to calm to 2 feet. 
.tonight...west winds 5 to 15 knots backing south late. waves
calm to 2 feet. 
.saturday...south winds 5 to 15 knots increasing to 15 to
25 knots. a chance of showers. waves building to 1 to 3 feet. 
.saturday night...south winds 15 to 25 knots veering west late. a
chance of showers. waves building to 3 to 6 feet occasionally to
8 feet. 
.sunday...northwest winds 20 to 30 knots backing west by mid
afternoon. waves building to 5 to 8 feet occasionally to 10 feet,
then subsiding to 3 to 6 feet occasionally to 8 feet. 
.sunday night...northwest winds 15 to 25 knots diminishing to
10 to 20 knots after midnight. waves subsiding to 1 to 3 feet. 
.monday...northwest winds 5 to 15 knots backing southwest by mid
afternoon. waves subsiding to calm to 2 feet. 
.monday night...south winds 5 to 15 knots increasing to 10 to
20 knots after midnight. waves building to 1 to 3 feet. 
.tuesday...south gales to 35 knots becoming southwest 20 to
30 knots. waves building to 3 to 5 feet occasionally to 7 feet,
then subsiding to 2 to 4 feet. 
.wednesday...west winds 20 to 30 knots diminishing to 10 to
20 knots. waves building to 3 to 6 feet occasionally to 8 feet,
then subsiding to 1 to 3 feet. 

$$