fzus63 kdtx 111941
glflh 
expires:202609120345;;287737

open lake forecast for lake huron
national weather service detroit/pontiac mi
341 pm edt fri sep 11 2026

for waters beyond five nautical miles off shore on lake huron

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, 30.00 inches, will slowly move eastward
towards the east coast into saturday. low pressure, 29.30 inches,
lifting over northern ontario then drags a cold front across the
central great lakes late saturday-sunday.


lhz462>464-120345-
lake huron from port austin to harbor beach beyond 5nm off shore-
lake huron from harbor beach to port sanilac beyond 5nm off shore-
lake huron from port sanilac to port huron beyond 5nm off shore-
341 pm edt fri sep 11 2026

.tonight...east winds 5 to 10 knots veering to the southeast late
in the evening...then increasing to 10 to 15 knots after
midnight. waves 2 feet or less. 
.saturday...south winds 10 to 15 knots. waves 1 to 3 feet. 
.saturday night...south winds 5 to 10 knots becoming southwest
10 to 15 knots by midnight...then veering to the west after
midnight. waves 1 to 3 feet. 
.sunday...north winds 5 to 10 knots backing to the west early in
the afternoon. a chance of showers in the afternoon. waves 1 to
3 feet. 
.sunday night...northwest winds 15 to 20 knots. a chance of
showers in the evening. waves 1 to 3 feet building to 3 to 5 feet
in the late evening and overnight. 
.monday...northwest winds 10 to 15 knots becoming northeast 5 to
10 knots late in the morning...then becoming south 15 to 20 knots
with gusts to around 30 knots late in the evening. a chance of
showers late in the evening. waves 2 to 4 feet subsiding to 1 to
3 feet late in the morning...then building to 6 to 9 feet late in
the evening. waves occasionally around 12 feet. 
.tuesday...south winds 20 to 25 knots with gusts to around
30 knots becoming southwest 10 to 15 knots with gusts to around
30 knots . a chance of showers. rain showers likely by midnight.
waves 6 to 9 feet subsiding to 2 to 4 feet . waves occasionally
around 12 feet. 
.wednesday...northwest winds 5 to 10 knots veering to the north.
a chance of showers until afternoon. a chance of showers by
midnight. waves 2 to 4 feet subsiding to 1 to 3 feet. 


$$

fzus63 kdtx 111941
glflh 
expires:202609120345;;287736

open lake forecast for lake huron
national weather service detroit/pontiac mi
341 pm edt fri sep 11 2026

for waters beyond five nautical miles off shore on lake huron

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, 30.00 inches, will slowly move eastward
towards the east coast into saturday. low pressure, 29.30 inches,
lifting over northern ontario then drags a cold front across the
central great lakes late saturday-sunday.


lhz361>363-120345-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
lake huron from presque isle light to sturgeon point mi beyond
5nm off shore-
lake huron from sturgeon point to alabaster mi beyond 5nm off
shore-
341 pm edt fri sep 11 2026

.tonight...south winds 10 to 15 knots. waves 2 to 4 feet. 
.saturday...south winds 10 to 15 knots. a chance of showers in
the afternoon. waves 2 to 4 feet. 
.saturday night...south winds 10 to 15 knots veering to the
northwest after midnight. a chance of showers in the evening.
waves 2 to 4 feet subsiding to 1 to 3 feet in the late evening
and overnight. 
.sunday...west winds 5 to 10 knots increasing to 10 to 15 knots
in the late morning and afternoon. a chance of showers in the
afternoon. waves 1 to 3 feet building to 2 to 4 feet early in the
afternoon. 
.sunday night...northwest winds 15 to 20 knots with gusts to
around 30 knots decreasing to 10 to 15 knots after midnight.
waves 3 to 5 feet. 
.monday...northwest winds 5 to 10 knots in the morning becoming
light and variable...then becoming southeast 5 to 10 knots late
in the afternoon becoming south 20 to 25 knots with gusts to
35 knot gales. a chance of showers late in the evening. waves
1 to 3 feet building to 8 to 12 feet. waves occasionally around
15 feet. 
.tuesday...south winds to 30 knots with gusts to 40 knot gales
decreasing to 20 to 25 knots with gusts to 40 knot gales in the
late morning and early afternoon...then becoming west 10 to
15 knots with gusts to around 30 knots . showers likely early in
the morning...then a chance of showers . waves 8 to 12 feet
subsiding to 4 to 6 feet . waves occasionally around 15 feet. 
.wednesday...north winds 5 to 10 knots. a chance of showers early
in the morning. waves 1 to 3 feet. 


$$

fzus63 kmkx 111850
glflm 
expires:202609120315;;286064

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
150 pm cdt fri sep 11 2026

for waters beyond five nautical miles of shore on lake michigan.

waves are provided as a range of significant wave heights, which
is the average of the highest 1/3 of the wave, along with the
average height of the highest 10% of the waves which will
occasionally be encountered.

.synopsis...

30.0 inch high pressure is shifting into southern ontario this 
afternoon, allowing winds to shift generally southerly across the 
open waters of lake michigan. southerly winds will continue to 
increase into tonight as 29.4 inch low pressure moves from the 
northern great plains toward the us-canadian border. winds will 
shift out of the west-northwest during the day saturday as a cold 
front moves across the lake. expecting wind gusts to remain 
primarily in the 25-30 knot range from this evening through 
saturday, though occasional gusts approaching gale thresholds 
can't be completely ruled out. currently anticipating any such 
gusts to remain brief and isolated enough to preclude the need for
gale warnings, but will continue to monitor trends. isolated 
showers and thunderstorms are possible ahead of the approaching 
cold front, with severe weather hazards not expected.

30.2 inch high pressure will build in from the northern great 
plains sunday night into monday, bringing decreasing winds 
saturday night through sunday & light/variable winds sunday night 
into monday. the high will move east of the waters monday 
afternoon & evening, resulting in a south-southeast wind shift. 
winds will increase further & veer south-southwesterly monday 
night into tuesday as 29.4 inch low pressure develops over 
manitoba. gales continue to appear likely during this time frame, 
with headlines becoming necessary in later forecasts if trends 
continue to hold. periods of showers and thunderstorms will 
accompany the developing low from as early as monday evening 
through at least tuesday afternoon. widespread severe weather 
hazards appear low over lake michigan at this time, though an 
isolated stronger storm with gusty winds can't be entirely ruled 
out. winds will trend northerly behind a cold front tuesday night 
into wednesday, steadily tapering away from gale thresholds in the
process. 


lmz080-669-671-673-675-777-779-870-872-874-876-878-120315-
lake michigan from michigan city in to st. joseph mi 5 nm
offshore to mid lake-
lake michigan from sheboygan to port washington wi 5 nm offshore
to mid lake-
lake michigan from port washington to north point light wi 5 nm
offshore to mid lake-
lake michigan from north point light to wind point wi 5 nm
offshore to mid lake-
lake michigan from wind point wi to winthrop harbor il 5 nm
offshore to mid lake-
lake michigan from winthrop harbor to wilmette harbor il 5 nm
offshore to mid lake-
lake michigan from wilmette harbor il to michigan city in 5 nm
offshore to mid lake-
lake michigan from whitehall to pentwater mi 5 nm offshore to mid
lake-
lake michigan from grand haven to whitehall mi 5 nm offshore to
mid lake-
lake michigan from holland to grand haven mi 5 nm offshore to mid
lake-
lake michigan from south haven to holland mi 5 nm offshore to mid
lake-
lake michigan from st. joseph to south haven mi 5 nm offshore to
mid lake-
150 pm cdt fri sep 11 2026

sheboygan wi to pentwater mi south...

.tonight...southeast winds 15 to 25 kt becoming south. waves 3 to
5 ft. 
.saturday...south winds 15 to 25 kt becoming southwest 10 to
20 kt. waves 4 to 6 ft occasionally to 8 ft. 
.saturday night...west winds 10 to 20 kt veering to north. waves
3 to 5 ft. 
.sunday...north winds 10 to 20 kt. waves 3 to 5 ft. 
.sunday night...north winds 10 to 20 kt becoming northeast. waves
2 to 4 ft. 
.monday...east winds to 30 kt becoming southeast gales to 35 kt 
in the afternoon. waves 4 to 7 ft occasionally to 9 ft building to
7 to 10 ft occasionally to 13 ft. 
.monday night...southeast gales to 35 kt becoming south. chance 
of showers. waves 10 to 14 ft occasionally to 18 ft. 
.tuesday...southwest gales to 35 kt becoming west to 30 kt.
showers likely. waves 10 to 14 ft occasionally to 18 ft subsiding
to 5 to 8 ft occasionally to 10 ft. 
.wednesday...northeast winds 10 to 20 kt. chance of showers.
waves 2 to 4 ft.  

$$

fzus63 kmkx 111850
glflm 
expires:202609120315;;286063

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
150 pm cdt fri sep 11 2026

for waters beyond five nautical miles of shore on lake michigan.

waves are provided as a range of significant wave heights, which
is the average of the highest 1/3 of the wave, along with the
average height of the highest 10% of the waves which will
occasionally be encountered.

.synopsis...

30.0 inch high pressure is shifting into southern ontario this 
afternoon, allowing winds to shift generally southerly across the 
open waters of lake michigan. southerly winds will continue to 
increase into tonight as 29.4 inch low pressure moves from the 
northern great plains toward the us-canadian border. winds will 
shift out of the west-northwest during the day saturday as a cold 
front moves across the lake. expecting wind gusts to remain 
primarily in the 25-30 knot range from this evening through 
saturday, though occasional gusts approaching gale thresholds 
can't be completely ruled out. currently anticipating any such 
gusts to remain brief and isolated enough to preclude the need for
gale warnings, but will continue to monitor trends. isolated 
showers and thunderstorms are possible ahead of the approaching 
cold front, with severe weather hazards not expected.

30.2 inch high pressure will build in from the northern great 
plains sunday night into monday, bringing decreasing winds 
saturday night through sunday & light/variable winds sunday night 
into monday. the high will move east of the waters monday 
afternoon & evening, resulting in a south-southeast wind shift. 
winds will increase further & veer south-southwesterly monday 
night into tuesday as 29.4 inch low pressure develops over 
manitoba. gales continue to appear likely during this time frame, 
with headlines becoming necessary in later forecasts if trends 
continue to hold. periods of showers and thunderstorms will 
accompany the developing low from as early as monday evening 
through at least tuesday afternoon. widespread severe weather 
hazards appear low over lake michigan at this time, though an 
isolated stronger storm with gusty winds can't be entirely ruled 
out. winds will trend northerly behind a cold front tuesday night 
into wednesday, steadily tapering away from gale thresholds in the
process. 


lmz261-362-364-366-563-565-567-868-120315-
lake michigan from seul choix point to rock island passage 5 nm
offshore to mid lake-
lake michigan south of a line from seul choix point to the
mackinac bridge and north of a line from charlevoix mi to south
fox island 5 nm offshore-
lake michigan from charlevoix to point betsie mi 5 nm offshore to
mid lake-
lake michigan from point betsie to manistee mi 5 nm offshore to
mid lake-
lake michigan from rock island passage to sturgeon bay wi-
lake michigan from sturgeon bay to two rivers wi 5 nm offshore to
mid lake-
lake michigan from two rivers to sheboygan wi 5 nm offshore to
mid lake-
lake michigan from pentwater to manistee mi 5 nm offshore to mid
lake-
150 pm cdt fri sep 11 2026

sheboygan wi to pentwater mi north...

.tonight...south winds to 30 kt diminishing to 15 to 25 kt. waves
4 to 7 ft occasionally to 9 ft. 
.saturday...south winds to 30 kt becoming southwest. slight
chance of showers in the morning, then chance of showers and
slight chance of thunderstorms in the afternoon. waves 4 to 7 ft
occasionally to 9 ft subsiding to 4 to 6 ft occasionally to 8 ft.
.saturday night...west winds 10 to 20 kt becoming northwest.
waves 2 to 4 ft. 
.sunday...northwest winds 10 to 20 kt increasing to 15 to 25 kt.
waves 1 to 3 ft. 
.sunday night...north winds 10 to 20 kt becoming northeast 10 to
15 kt. waves 1 to 3 ft. 
.monday...east winds 15 to 25 kt becoming southeast gales to
35 kt in the afternoon. waves 4 to 6 ft occasionally to 8 ft
building to 6 to 9 ft occasionally to 12 ft. 
.monday night...south gales to 35 kt. showers. waves 10 to 14 ft 
occasionally to 18 ft. 
.tuesday...southwest gales to 35 kt becoming west gales to 35 kt.
chance of showers. waves 10 to 14 ft occasionally to 18 ft 
subsiding to 5 to 8 ft occasionally to 10 ft. 
.wednesday...northeast winds 10 to 20 kt. waves 1 to 3 ft.  

$$

fzus63 kmqt 112001
glfls 
expires:202609120800;;288164

open lake forecast for lake superior
national weather service marquette mi
401 pm edt fri sep 11 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...

30.0 inch ridge is exiting eastward as a 29.6 inch trough moves 
across the northern plains. the trough tracks towards hudson bay by 
this afternoon, bringing 29.8 inch troughing to the lake. a cold 
front and 29.7 inch trough passes through on saturday with ridging 
in its wake reaching 30.0 inches by sunday. this strengthens further 
to 30.2 inches monday. 




lsz265-120800-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
401 pm edt fri sep 11 2026

.late this afternoon...south winds 15 to 25 knots. waves 1 to
3 feet building to 2 to 4 feet. 
.tonight...south winds 15 to 25 knots increasing to 20 to
30 knots after midnight. a chance of showers. a slight chance of
thunderstorms after midnight. waves subsiding to 1 to 3 feet. 
.saturday...southwest winds 20 to 30 knots becoming west to
30 knots with a few gale force gusts to 35 knots possible in the
afternoon. a slight chance of showers through early afternoon.
waves building to 3 to 5 feet occasionally to 7 feet. 
.saturday night...west winds 20 to 30 knots veering northwest
after midnight. waves subsiding to 2 to 4 feet. 
.sunday...northwest winds 20 to 30 knots. waves 2 to 4 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...south winds 5 to 15 knots becoming southeast gales to
35 knots by mid afternoon. a chance of showers by mid afternoon.
waves building to 5 to 8 feet occasionally to 10 feet. 
.monday night...south gales to 40 knots veering southwest after
midnight. showers. waves building to 6 to 10 feet occasionally to
13 feet. 
.tuesday...west gales to 40 knots becoming northwest 15 to
25 knots. waves building to 7 to 10 feet occasionally to 13 feet,
then subsiding to calm to 2 feet. 
.wednesday...northwest winds 10 to 20 knots. waves calm to
2 feet. 

$$

fzus63 kmqt 112001
glfls 
expires:202609120800;;288165

open lake forecast for lake superior
national weather service marquette mi
401 pm edt fri sep 11 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...

30.0 inch ridge is exiting eastward as a 29.6 inch trough moves 
across the northern plains. the trough tracks towards hudson bay by 
this afternoon, bringing 29.8 inch troughing to the lake. a cold 
front and 29.7 inch trough passes through on saturday with ridging 
in its wake reaching 30.0 inches by sunday. this strengthens further 
to 30.2 inches monday. 




lsz266-120800-
lake superior east of a line from manitou island to marquette mi
and west of a line from grand marais mi to the us/canadian border
beyond 5nm from shore-
401 pm edt fri sep 11 2026

.late this afternoon...south winds 20 to 30 knots. waves 3 to
5 feet occasionally to 7 feet. 
.tonight...south winds 20 to 30 knots. a chance of showers. a
slight chance of thunderstorms after midnight. waves building to
4 to 7 feet occasionally to 9 feet, then subsiding to 3 to 6 feet
occasionally to 8 feet. 
.saturday...southwest winds 20 to 30 knots veering west in the
afternoon. a slight chance of showers through early afternoon.
waves subsiding to 3 to 6 feet occasionally to 8 feet. 
.saturday night...west winds 20 to 30 knots veering northwest
after midnight. waves 3 to 6 feet occasionally to 8 feet. 
.sunday...northwest winds 20 to 30 knots diminishing to 15 to
25 knots by mid afternoon. waves subsiding to 3 to 5 feet
occasionally to 7 feet. 
.sunday night...northwest winds 15 to 25 knots diminishing to
5 to 15 knots after midnight. waves subsiding to calm to 2 feet. 
.monday...south winds 5 to 15 knots becoming southeast gales to
35 knots by mid afternoon. waves building to 5 to 8 feet
occasionally to 10 feet. 
.monday night...south gales to 40 knots. showers. waves building
to 9 to 12 feet occasionally to 15 feet. 
.tuesday...west gales to 35 knots becoming northwest 20 to
30 knots. waves subsiding to 1 to 3 feet. 
.wednesday...northwest winds 10 to 20 knots. waves subsiding to
calm to 2 feet. 

$$

fzus63 kmqt 112001
glfls 
expires:202609120800;;288166

open lake forecast for lake superior
national weather service marquette mi
401 pm edt fri sep 11 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...

30.0 inch ridge is exiting eastward as a 29.6 inch trough moves 
across the northern plains. the trough tracks towards hudson bay by 
this afternoon, bringing 29.8 inch troughing to the lake. a cold 
front and 29.7 inch trough passes through on saturday with ridging 
in its wake reaching 30.0 inches by sunday. this strengthens further 
to 30.2 inches monday. 




lsz267-120800-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
401 pm edt fri sep 11 2026

.late this afternoon...south winds 20 to 30 knots. waves 2 to
4 feet. 
.tonight...south winds 20 to 30 knots diminishing to 15 to
25 knots after midnight, then increasing to 20 to 30 knots late.
a slight chance of showers after midnight. waves building to 3 to
5 feet occasionally to 7 feet. 
.saturday...south winds 20 to 30 knots veering west in the
afternoon. a chance of showers. waves subsiding to 2 to 4 feet,
then building to 3 to 5 feet occasionally to 7 feet. 
.saturday night...west winds 20 to 30 knots becoming northwest
15 to 25 knots after midnight. waves building to 3 to 6 feet
occasionally to 8 feet. 
.sunday...northwest winds 20 to 30 knots. waves building to 4 to
7 feet occasionally to 9 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 calm to 2 feet.
.monday...northwest winds 5 to 15 knots becoming southeast 10 to
20 knots by mid afternoon. waves building to 2 to 4 feet. 
.monday night...south gales to 40 knots. showers. waves building
to 7 to 11 feet occasionally to 14 feet. 
.tuesday...west gales to 35 knots becoming northwest 15 to
25 knots. a chance of showers. waves building to 9 to 12 feet
occasionally to 15 feet, then subsiding to 1 to 3 feet. 
.wednesday...northwest winds 10 to 20 knots veering north. waves
subsiding to calm to 2 feet. 

$$

fzus63 kmqt 112001
glfls 
expires:202609120800;;288161

open lake forecast for lake superior
national weather service marquette mi
401 pm edt fri sep 11 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...

30.0 inch ridge is exiting eastward as a 29.6 inch trough moves 
across the northern plains. the trough tracks towards hudson bay by 
this afternoon, bringing 29.8 inch troughing to the lake. a cold 
front and 29.7 inch trough passes through on saturday with ridging 
in its wake reaching 30.0 inches by sunday. this strengthens further 
to 30.2 inches monday. 




lsz162-120800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
401 pm edt fri sep 11 2026 /301 pm cdt fri sep 11 2026/

.late this afternoon...south winds 15 to 25 knots. a slight
chance of showers. waves 1 to 3 feet. 
.tonight...south winds 15 to 25 knots veering southwest after
midnight. a chance of showers and a slight chance of
thunderstorms. waves subsiding to calm to 2 feet, then building
to 1 to 3 feet. 
.saturday...west winds 15 to 25 knots increasing to 20 to
30 knots late. waves 1 to 3 feet. 
.saturday night...northwest winds 15 to 25 knots diminishing to
10 to 20 knots after midnight. waves subsiding to calm to 2 feet.
.sunday...northwest winds 10 to 20 knots backing west by mid
afternoon. waves calm to 2 feet. 
.sunday night...northwest winds 5 to 15 knots becoming north less
than 10 knots after midnight. waves calm to 2 feet. 
.monday...southeast winds 5 to 15 knots increasing to 20 to
30 knots by mid afternoon. showers likely by mid afternoon. waves
building to 3 to 5 feet occasionally to 7 feet. 
.monday night...south gales to 35 knots veering southwest after
midnight. showers through midnight. waves building to 4 to 7 feet
occasionally to 9 feet, then subsiding to 3 to 6 feet
occasionally to 8 feet. 
.tuesday...west winds 20 to 30 knots becoming northwest 10 to
20 knots. waves subsiding to calm to 2 feet. 
.wednesday...north winds 5 to 15 knots increasing to 10 to
20 knots. waves calm to 2 feet. 

$$

fzus63 kmqt 112001
glfls 
expires:202609120800;;288162

open lake forecast for lake superior
national weather service marquette mi
401 pm edt fri sep 11 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...

30.0 inch ridge is exiting eastward as a 29.6 inch trough moves 
across the northern plains. the trough tracks towards hudson bay by 
this afternoon, bringing 29.8 inch troughing to the lake. a cold 
front and 29.7 inch trough passes through on saturday with ridging 
in its wake reaching 30.0 inches by sunday. this strengthens further 
to 30.2 inches monday. 




lsz263-120800-
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 fri sep 11 2026

.late this afternoon...south winds 15 to 25 knots. a chance of
showers and a slight chance of thunderstorms. waves 2 to 4 feet
subsiding to 1 to 3 feet. 
.tonight...south winds 15 to 25 knots veering southwest after
midnight. a chance of showers and a slight chance of
thunderstorms. waves building to 2 to 4 feet, then subsiding to
1 to 3 feet. 
.saturday...west winds 15 to 25 knots increasing to 20 to
30 knots in the afternoon. a slight chance of showers through
early afternoon. waves building to 3 to 6 feet occasionally to
8 feet. 
.saturday night...northwest winds 15 to 25 knots diminishing to
10 to 20 knots late. waves subsiding to 2 to 4 feet. 
.sunday...northwest winds 10 to 20 knots backing west by mid
afternoon. waves subsiding to calm to 2 feet. 
.sunday night...northwest winds 10 to 20 knots diminishing to
5 to 15 knots after midnight. waves calm to 2 feet. 
.monday...south winds 15 to 25 knots becoming southeast 20 to
30 knots by mid afternoon. a chance of showers by mid afternoon.
waves building to 3 to 6 feet occasionally to 8 feet. 
.monday night...south gales to 35 knots veering southwest after
midnight. showers through midnight, then a chance of showers
after midnight. waves building to 5 to 8 feet occasionally to
10 feet. 
.tuesday...west gales to 35 knots becoming northwest 20 to
30 knots. waves building to 6 to 9 feet occasionally to 11 feet,
then subsiding to calm to 2 feet. 
.wednesday...northwest winds 10 to 20 knots. waves calm to
2 feet. 

$$

fzus63 kmqt 112001
glfls 
expires:202609120800;;288163

open lake forecast for lake superior
national weather service marquette mi
401 pm edt fri sep 11 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...

30.0 inch ridge is exiting eastward as a 29.6 inch trough moves 
across the northern plains. the trough tracks towards hudson bay by 
this afternoon, bringing 29.8 inch troughing to the lake. a cold 
front and 29.7 inch trough passes through on saturday with ridging 
in its wake reaching 30.0 inches by sunday. this strengthens further 
to 30.2 inches monday. 




lsz264-120800-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
401 pm edt fri sep 11 2026

.late this afternoon...south winds 10 to 20 knots. a slight
chance of showers and thunderstorms. waves 2 to 4 feet subsiding
to 1 to 3 feet. 
.tonight...south winds 10 to 20 knots increasing to 15 to
25 knots after midnight, then veering southwest late. a chance of
showers and a slight chance of thunderstorms. waves building to
2 to 4 feet. 
.saturday...west winds 15 to 25 knots increasing to 20 to
30 knots in the afternoon. a slight chance of showers through
early afternoon. waves building to 3 to 6 feet occasionally to
8 feet. 
.saturday night...west winds 20 to 30 knots becoming northwest
15 to 25 knots after midnight, then diminishing to 10 to 20 knots
late. waves subsiding to 2 to 4 feet. 
.sunday...northwest winds 10 to 20 knots. waves 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...south winds 5 to 15 knots becoming southeast gales to
35 knots by mid afternoon. a chance of showers by mid afternoon.
waves building to 4 to 7 feet occasionally to 9 feet. 
.monday night...south gales to 35 knots veering southwest after
midnight. showers. waves building to 8 to 11 feet occasionally to
14 feet, then subsiding to 6 to 9 feet occasionally to 11 feet. 
.tuesday...west gales to 35 knots becoming northwest 20 to
30 knots. waves subsiding to calm to 2 feet. 
.wednesday...northwest winds 5 to 15 knots. waves calm to 2 feet.

$$