fzus63 kmqt 140801
glfls 
expires:202610142000;;070297

open lake forecast for lake superior
national weather service marquette mi
401 am edt wed oct 14 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...

lake superior is currently between a 29.8 inch low over new england 
and a 30.2 inch high expanding over the northern plains. as the low 
reaches nova scotia later this morning, the high builds to 30.3 
inches over the dakotas. the high then weakens to 30.2 inches 
tonight into thursday over the upper great lakes. meanwhile, a 29.9 
inch low develops over saskatchewan as a 29.8 inch low forms over 
the texas panhandle. as the high shifts into western quebec thursday 
afternoon, the lows begin to converge over the upper midwest, 
consolidating into a 29.8 inch low over the southern michigan state 
lines thursday night. in its wake, a 30.9 inch high builds over 
wyoming, weakening to 30.6 inches friday as it expands over the 
plains while the low deepens to 29.5 inches over new england. the 
high slides south of the great lakes at 30.4 inches by saturday 
night as a 29.4 inch alberta clipper moves into saskatchewan. 
sunday, the high builds back to 30.5 inches over the delmarva 
peninsula as the clipper moves into manitoba.




lsz162-142000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
401 am edt wed oct 14 2026 /301 am cdt wed oct 14 2026/

...gale watch in effect from late thursday night through friday
afternoon...

.early this morning...northwest winds 10 to 20 knots. waves calm
to 2 feet. 
.today...northwest winds 10 to 20 knots diminishing to 5 to
15 knots in the afternoon, then backing west late. waves calm to
2 feet. 
.tonight...east winds 5 to 15 knots veering south late. waves
calm to 2 feet. 
.thursday...south winds 5 to 15 knots becoming southwest 10 to
20 knots in the afternoon. a chance of showers. waves calm to
2 feet. 
.thursday night...west winds 15 to 25 knots becoming northwest
gales to 40 knots after midnight. a chance of showers. waves
building to 7 to 10 feet occasionally to 13 feet. 
.friday...north gales to 40 knots diminishing to 20 to 30 knots
by mid afternoon. waves building to 9 to 12 feet occasionally to
15 feet, then subsiding to 2 to 4 feet. 
.friday night...northwest winds 10 to 20 knots becoming west
20 to 30 knots after midnight. waves subsiding to calm to 2 feet.
.saturday...southwest gales to 35 knots. waves building to 3 to
6 feet occasionally to 8 feet. 
.sunday...southwest gales to 35 knots becoming west 20 to
30 knots. waves building to 6 to 9 feet occasionally to 11 feet,
then subsiding to calm to 2 feet. 

$$

fzus63 kmqt 140801
glfls 
expires:202610142000;;070298

open lake forecast for lake superior
national weather service marquette mi
401 am edt wed oct 14 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...

lake superior is currently between a 29.8 inch low over new england 
and a 30.2 inch high expanding over the northern plains. as the low 
reaches nova scotia later this morning, the high builds to 30.3 
inches over the dakotas. the high then weakens to 30.2 inches 
tonight into thursday over the upper great lakes. meanwhile, a 29.9 
inch low develops over saskatchewan as a 29.8 inch low forms over 
the texas panhandle. as the high shifts into western quebec thursday 
afternoon, the lows begin to converge over the upper midwest, 
consolidating into a 29.8 inch low over the southern michigan state 
lines thursday night. in its wake, a 30.9 inch high builds over 
wyoming, weakening to 30.6 inches friday as it expands over the 
plains while the low deepens to 29.5 inches over new england. the 
high slides south of the great lakes at 30.4 inches by saturday 
night as a 29.4 inch alberta clipper moves into saskatchewan. 
sunday, the high builds back to 30.5 inches over the delmarva 
peninsula as the clipper moves into manitoba.




lsz263-142000-
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 am edt wed oct 14 2026

...gale watch in effect from late thursday night through friday
afternoon...

.early this morning...northwest winds 10 to 20 knots. waves 1 to
3 feet. 
.today...northwest winds 5 to 15 knots. waves subsiding to calm
to 2 feet. 
.tonight...east winds less than 10 knots veering southeast after
midnight, then becoming south 5 to 15 knots late. waves calm to
2 feet. 
.thursday...south winds 5 to 15 knots veering southwest in the
afternoon. a chance of showers through early afternoon, then
showers likely by mid afternoon. waves calm to 2 feet. 
.thursday night...west winds 15 to 25 knots becoming north gales
to 40 knots after midnight. showers. waves building to 9 to
12 feet occasionally to 15 feet. 
.friday...north gales to 45 knots. waves building to 11 to
15 feet occasionally to 19 feet, then subsiding to 4 to 7 feet
occasionally to 9 feet. 
.friday night...northwest winds 20 to 30 knots becoming west
15 to 25 knots after midnight. waves subsiding to 1 to 3 feet. 
.saturday...southwest gales to 40 knots. waves building to 4 to
7 feet occasionally to 9 feet, then subsiding to 3 to 5 feet
occasionally to 7 feet. 
.sunday...southwest gales to 45 knots becoming west gales to
35 knots. waves subsiding to 1 to 3 feet. 

$$