fzus63 kdtx 010128
glflh 
expires:202608010930;;417572

open lake forecast for lake huron
national weather service detroit/pontiac mi
928 pm edt fri jul 31 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...low pressure, averaging around 29.90 inches, out over
the upper mississippi river valley will track eastward towards
the ohio valley through the weekend. this brings rain and
isolated thunderstorm chances to the great lakes both saturday
and sunday along with elevated winds and waves into saginaw bay
and the thumb nearshores.


lhz361-010930-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
928 pm edt fri jul 31 2026

.rest of tonight...west winds 5 to 10 knots. showers likely.
waves 2 feet or less. 
.saturday...light and variable winds. a chance of showers in the
morning...then showers likely in the afternoon. waves 2 feet or
less. 
.saturday night...light and variable winds becoming northeast
10 to 15 knots. a chance of showers. waves 2 feet or less. 
.sunday...northeast winds 10 to 15 knots decreasing to 5 to
10 knots early in the afternoon. waves 1 to 3 feet. 
.sunday night...light and variable winds becoming northeast 5 to
10 knots in the late evening and overnight. waves 2 feet or less.
.monday...north winds 5 to 10 knots in the morning becoming light
and variable. waves 2 feet or less. 
.tuesday...east winds 5 to 10 knots early in the morning veering
to the southeast...then backing to the east early in the evening
becoming light and variable. waves 2 feet or less. 
.wednesday...light and variable winds becoming northwest 5 to
10 knots by midnight. waves 2 feet or less. 


$$

fzus63 kdtx 010128
glflh 
expires:202608010930;;417573

open lake forecast for lake huron
national weather service detroit/pontiac mi
928 pm edt fri jul 31 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...low pressure, averaging around 29.90 inches, out over
the upper mississippi river valley will track eastward towards
the ohio valley through the weekend. this brings rain and
isolated thunderstorm chances to the great lakes both saturday
and sunday along with elevated winds and waves into saginaw bay
and the thumb nearshores.


lhz362-363-010930-
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-
928 pm edt fri jul 31 2026

.rest of tonight...light and variable winds. a chance of showers.
waves 2 feet or less. 
.saturday...light and variable winds becoming north 5 to 10 knots
late in the afternoon. a chance of showers in the morning...then
showers likely in the afternoon. waves 2 feet or less. 
.saturday night...northeast winds 5 to 10 knots increasing to
10 to 15 knots after midnight. showers likely in the evening...
then a chance of showers after midnight. waves 2 feet or less. 
.sunday...northeast winds 10 to 15 knots increasing to 15 to
20 knots with gusts to around 30 knots in the late morning and
afternoon. a chance of showers. waves 3 to 5 feet. 
.sunday night...north winds 10 to 15 knots. a chance of showers
in the evening. waves 3 to 5 feet subsiding to 1 to 3 feet in the
late evening and overnight. 
.monday...north winds 10 to 15 knots decreasing to 5 to 10 knots.
waves 2 feet or less. 
.tuesday...northeast winds 5 to 10 knots early in the morning
becoming light and variable...then becoming northeast 5 to
10 knots early in the evening veering to the east. waves 2 feet
or less. 
.wednesday...light and variable winds becoming east 5 to 10 knots
by midnight. waves 2 feet or less. 


$$

fzus63 kdtx 010128
glflh 
expires:202608010930;;417574

open lake forecast for lake huron
national weather service detroit/pontiac mi
928 pm edt fri jul 31 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...low pressure, averaging around 29.90 inches, out over
the upper mississippi river valley will track eastward towards
the ohio valley through the weekend. this brings rain and
isolated thunderstorm chances to the great lakes both saturday
and sunday along with elevated winds and waves into saginaw bay
and the thumb nearshores.


lhz462>464-010930-
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-
928 pm edt fri jul 31 2026

.rest of tonight...east winds 5 to 10 knots backing to the north
after midnight. waves 2 feet or less. 
.saturday...north winds 5 to 10 knots. a chance of showers. waves
2 feet or less. 
.saturday night...northeast winds 10 to 15 knots. a chance of
showers in the evening...then showers likely after midnight.
waves 1 to 3 feet. 
.sunday...northeast winds 10 to 15 knots becoming north 15 to
20 knots with gusts to around 30 knots early in the afternoon.
showers likely in the morning...then a chance of showers in the
afternoon. waves 1 to 3 feet building to 3 to 5 feet in the late
morning and afternoon. 
.sunday night...north winds 15 to 20 knots decreasing to 10 to
15 knots after midnight. a chance of showers in the evening.
waves 3 to 5 feet. 
.monday...north winds 10 to 15 knots decreasing to 5 to 10 knots
late in the evening. waves 1 to 3 feet. 
.tuesday...northeast winds 5 to 10 knots veering to the east by
midnight. waves 2 feet or less. 
.wednesday...south winds 5 to 10 knots early in the morning
becoming light and variable...then becoming east 5 to 10 knots .
a chance of showers by midnight. waves 2 feet or less. 


$$

fzus63 kmkx 010155
glflm 
expires:202608010915;;418077

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
855 pm cdt fri jul 31 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...

low pressure will deepen to around 29.5 inches as it pushes into 
il tonight into saturday. easterly winds will increase through
tonight, shifting to northeasterly into saturday morning. winds
will gust 25 to 30 kt across the southern half throughout
saturday into sunday as the low pressure slowly tracks over the 
eastern great lakes. isolated and infrequent gusts to gale force 
will be possible at times this weekend on the backside of the 
deepening low pressure. winds then diminish into the start of next
week as the low pressure pushes further east and high pressure 
begins to build across the upper great lakes region monday and 
tuesday. this will bring lighter and more variable winds to lake 
michigan before southerly winds return by midweek as another low 
pressure system develops over the plains.


lmz261-362-364-366-563-565-567-868-010915-
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-
855 pm cdt fri jul 31 2026

sheboygan wi to pentwater mi north...

.rest of tonight...northwest winds 10 to 15 kt becoming north
10 to 20 kt late this evening, then becoming northeast 15 to
25 kt overnight. showers likely with slight chance of
thunderstorms through early evening, then chance of showers
overnight. waves 1 to 2 ft building to 3 to 5 ft. 
.saturday...northeast winds 15 to 25 kt. chance of showers and
slight chance of thunderstorms in the morning, then chance of
showers in the afternoon. waves 3 to 5 ft. 
.saturday night...northeast winds 15 to 25 kt. waves 4 to 7 ft
occasionally to 9 ft. 
.sunday...northeast winds to 30 kt. waves 5 to 8 ft occasionally
to 10 ft. 
.sunday night...north winds to 30 kt becoming northeast 10 to
20 kt overnight. waves 4 to 7 ft occasionally to 9 ft subsiding
to 2 to 4 ft. 
.monday...northeast winds 10 to 15 kt becoming north 10 to 20 kt.
waves 1 to 3 ft. 
.monday night...east winds 10 to 20 kt becoming southeast 5 to
10 kt. waves 1 to 3 ft subsiding to 1 to 2 ft. 
.tuesday...south winds 10 to 15 kt increasing to 10 to 20 kt.
waves 1 to 2 ft. 
.wednesday...west winds 10 to 15 kt becoming southwest 10 to
20 kt. waves 1 to 2 ft.  

$$

fzus63 kmkx 010155
glflm 
expires:202608010915;;418078

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
855 pm cdt fri jul 31 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...

low pressure will deepen to around 29.5 inches as it pushes into 
il tonight into saturday. easterly winds will increase through
tonight, shifting to northeasterly into saturday morning. winds
will gust 25 to 30 kt across the southern half throughout
saturday into sunday as the low pressure slowly tracks over the 
eastern great lakes. isolated and infrequent gusts to gale force 
will be possible at times this weekend on the backside of the 
deepening low pressure. winds then diminish into the start of next
week as the low pressure pushes further east and high pressure 
begins to build across the upper great lakes region monday and 
tuesday. this will bring lighter and more variable winds to lake 
michigan before southerly winds return by midweek as another low 
pressure system develops over the plains.


lmz080-669-671-673-675-777-779-870-872-874-876-878-010915-
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-
855 pm cdt fri jul 31 2026

sheboygan wi to pentwater mi south...

.rest of tonight...southeast winds 10 to 20 kt becoming east
15 to 25 kt. showers and slight chance of thunderstorms. waves
1 to 3 ft building to 4 to 7 ft occasionally to 9 ft. 
.saturday...east winds to 30 kt becoming northeast. showers and
slight chance of thunderstorms in the morning, then showers
likely with slight chance of thunderstorms in the afternoon.
waves 6 to 9 ft occasionally to 12 ft. 
.saturday night...northeast winds to 30 kt. chance of showers in
the evening. waves 6 to 9 ft occasionally to 12 ft. 
.sunday...north winds to 30 kt. waves 6 to 9 ft occasionally to
12 ft building to 8 to 11 ft occasionally to 14 ft. 
.sunday night...north winds to 30 kt becoming northeast 10 to
20 kt overnight. waves 7 to 10 ft occasionally to 13 ft subsiding
to 4 to 7 ft occasionally to 9 ft. 
.monday...northeast winds 10 to 15 kt becoming north 10 to 20 kt.
waves 3 to 5 ft subsiding to 2 to 4 ft. 
.monday night...northeast winds 10 to 20 kt becoming east 5 to
10 kt. waves 2 to 4 ft. 
.tuesday...east winds 5 to 10 kt veering to southwest 10 to
20 kt. waves 1 to 2 ft. 
.wednesday...southwest winds 10 to 15 kt becoming south. waves
1 to 2 ft.  

$$

fzus63 kmqt 010201
glfls 
expires:202608010800;;418274

open lake forecast for lake superior
national weather service marquette mi
1001 pm edt fri jul 31 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... 

this evening, a 29.7 inch low is over eastern iowa while a 30.0 inch 
high is over manitoba. through the weekend, the high shifts over 
northern ontario while the low shifts south of the great lakes. by 
sunday night, the 30.0 inch high over northeast ontario and james 
bay will extend 29.9 inch ridging over the lake while the low moves 
over the appalachian range at 29.8 inches. meanwhile, a 29.3 inch 
low will move from saskatchewan into northern manitoba sunday night 
into monday morning. by monday night, this low will force the 30.0 
inch high over the great lakes as the low weakens to 29.5 inches 
over western hudson bay. tuesday, the high builds to 30.1 inches as 
it moves over the east coast while the low expands over the rest of 
hudson bay. wednesday and thursday, the high merges with a 30.3 inch 
bermuda high, sending a 30.0 inch ridge over lake superior while the 
low retrogrades back to northern manitoba, weakening to 29.6 inches.




lsz162-010800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1001 pm edt fri jul 31 2026 /901 pm cdt fri jul 31 2026/

.rest of tonight...southwest winds 5 to 15 knots veering west
after midnight, then veering north late. patchy smoke. patchy fog
after midnight. waves calm to 2 feet. 
.saturday...northeast winds 5 to 15 knots veering east in the
afternoon, then backing northeast late. a slight chance of
showers by mid afternoon. waves calm to 2 feet. 
.saturday night...north winds 5 to 15 knots veering northeast
late. waves calm to 2 feet. 
.sunday...northeast winds 5 to 15 knots increasing to 10 to
20 knots by mid afternoon. waves calm to 2 feet. 
.sunday night...northeast winds 5 to 15 knots veering east after
midnight. waves calm to 2 feet. 
.monday...east winds 5 to 15 knots. waves calm to 2 feet. 
.monday night...northeast winds 5 to 15 knots veering southwest
after midnight. a chance of showers after midnight. waves calm to
2 feet. 
.tuesday...southwest winds 5 to 15 knots veering northwest. waves
calm to 2 feet. 
.wednesday...southwest winds 5 to 15 knots veering northwest.
waves calm to 2 feet. 

$$

fzus63 kmqt 010201
glfls 
expires:202608010800;;418275

open lake forecast for lake superior
national weather service marquette mi
1001 pm edt fri jul 31 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... 

this evening, a 29.7 inch low is over eastern iowa while a 30.0 inch 
high is over manitoba. through the weekend, the high shifts over 
northern ontario while the low shifts south of the great lakes. by 
sunday night, the 30.0 inch high over northeast ontario and james 
bay will extend 29.9 inch ridging over the lake while the low moves 
over the appalachian range at 29.8 inches. meanwhile, a 29.3 inch 
low will move from saskatchewan into northern manitoba sunday night 
into monday morning. by monday night, this low will force the 30.0 
inch high over the great lakes as the low weakens to 29.5 inches 
over western hudson bay. tuesday, the high builds to 30.1 inches as 
it moves over the east coast while the low expands over the rest of 
hudson bay. wednesday and thursday, the high merges with a 30.3 inch 
bermuda high, sending a 30.0 inch ridge over lake superior while the 
low retrogrades back to northern manitoba, weakening to 29.6 inches.




lsz263-010800-
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-
1001 pm edt fri jul 31 2026

.rest of tonight...southwest winds 5 to 15 knots veering west
after midnight, then veering north late. a slight chance of
showers and thunderstorms by midnight. patchy fog and smoke.
waves calm to 2 feet. 
.saturday...northeast winds 5 to 15 knots increasing to 10 to
20 knots in the afternoon. waves building to 1 to 3 feet, then
subsiding to calm to 2 feet. 
.saturday night...north winds 5 to 15 knots veering northeast
after midnight. waves calm to 2 feet. 
.sunday...northeast winds 5 to 15 knots. waves calm to 2 feet. 
.sunday night...east winds 5 to 15 knots becoming southeast less
than 10 knots after midnight. waves calm to 2 feet. 
.monday...southeast winds less than 10 knots becoming east 5 to
15 knots by mid afternoon. waves calm to 2 feet. 
.monday night...southeast winds 10 to 20 knots veering south
after midnight. waves calm to 2 feet. 
.tuesday...southwest winds 5 to 15 knots veering northwest. waves
calm to 2 feet. 
.wednesday...southwest winds 10 to 20 knots becoming west 5 to
15 knots. waves calm to 2 feet. 

$$

fzus63 kmqt 010201
glfls 
expires:202608010800;;418276

open lake forecast for lake superior
national weather service marquette mi
1001 pm edt fri jul 31 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... 

this evening, a 29.7 inch low is over eastern iowa while a 30.0 inch 
high is over manitoba. through the weekend, the high shifts over 
northern ontario while the low shifts south of the great lakes. by 
sunday night, the 30.0 inch high over northeast ontario and james 
bay will extend 29.9 inch ridging over the lake while the low moves 
over the appalachian range at 29.8 inches. meanwhile, a 29.3 inch 
low will move from saskatchewan into northern manitoba sunday night 
into monday morning. by monday night, this low will force the 30.0 
inch high over the great lakes as the low weakens to 29.5 inches 
over western hudson bay. tuesday, the high builds to 30.1 inches as 
it moves over the east coast while the low expands over the rest of 
hudson bay. wednesday and thursday, the high merges with a 30.3 inch 
bermuda high, sending a 30.0 inch ridge over lake superior while the 
low retrogrades back to northern manitoba, weakening to 29.6 inches.




lsz264-010800-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
1001 pm edt fri jul 31 2026

.rest of tonight...west winds 5 to 15 knots veering north late.
patchy fog. waves calm to 2 feet. 
.saturday...northeast winds 5 to 15 knots. patchy fog through
early afternoon. waves calm to 2 feet. 
.saturday night...north winds 5 to 15 knots veering northeast
after midnight. waves calm to 2 feet. 
.sunday...northeast winds 5 to 15 knots backing north by mid
afternoon. waves calm to 2 feet. 
.sunday night...northwest winds 5 to 15 knots becoming southeast
less than 10 knots after midnight. waves calm to 2 feet. 
.monday...southeast winds less than 10 knots increasing to 5 to
15 knots 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 calm to 2 feet. 
.tuesday...southwest winds 5 to 15 knots veering northwest. waves
calm to 2 feet. 
.wednesday...west winds 5 to 15 knots. waves calm to 2 feet. 

$$

fzus63 kmqt 010201
glfls 
expires:202608010800;;418277

open lake forecast for lake superior
national weather service marquette mi
1001 pm edt fri jul 31 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... 

this evening, a 29.7 inch low is over eastern iowa while a 30.0 inch 
high is over manitoba. through the weekend, the high shifts over 
northern ontario while the low shifts south of the great lakes. by 
sunday night, the 30.0 inch high over northeast ontario and james 
bay will extend 29.9 inch ridging over the lake while the low moves 
over the appalachian range at 29.8 inches. meanwhile, a 29.3 inch 
low will move from saskatchewan into northern manitoba sunday night 
into monday morning. by monday night, this low will force the 30.0 
inch high over the great lakes as the low weakens to 29.5 inches 
over western hudson bay. tuesday, the high builds to 30.1 inches as 
it moves over the east coast while the low expands over the rest of 
hudson bay. wednesday and thursday, the high merges with a 30.3 inch 
bermuda high, sending a 30.0 inch ridge over lake superior while the 
low retrogrades back to northern manitoba, weakening to 29.6 inches.




lsz265-010800-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
1001 pm edt fri jul 31 2026

.rest of tonight...southwest winds 10 to 20 knots becoming west
5 to 15 knots after midnight, then becoming northwest 10 to
20 knots late. a slight chance of showers and thunderstorms by
midnight. patchy smoke. patchy fog after midnight. waves calm to
2 feet. 
.saturday...north winds 10 to 20 knots. patchy fog through early
afternoon. a slight chance of showers. waves calm to 2 feet. 
.saturday night...north winds 10 to 20 knots veering northeast
late. waves calm to 2 feet. 
.sunday...northeast winds 10 to 20 knots becoming north 5 to
15 knots by mid afternoon. waves calm to 2 feet. 
.sunday night...north winds 5 to 15 knots veering east after
midnight. waves calm to 2 feet. 
.monday...southeast winds 5 to 15 knots becoming east 10 to
20 knots by mid afternoon. waves calm to 2 feet. 
.monday night...southeast winds 10 to 20 knots veering south
after midnight. waves calm to 2 feet. 
.tuesday...south winds 10 to 20 knots veering west. a chance of
showers. waves calm to 2 feet. 
.wednesday...northwest winds 10 to 20 knots backing west. waves
calm to 2 feet. 

$$

fzus63 kmqt 010201
glfls 
expires:202608010800;;418278

open lake forecast for lake superior
national weather service marquette mi
1001 pm edt fri jul 31 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... 

this evening, a 29.7 inch low is over eastern iowa while a 30.0 inch 
high is over manitoba. through the weekend, the high shifts over 
northern ontario while the low shifts south of the great lakes. by 
sunday night, the 30.0 inch high over northeast ontario and james 
bay will extend 29.9 inch ridging over the lake while the low moves 
over the appalachian range at 29.8 inches. meanwhile, a 29.3 inch 
low will move from saskatchewan into northern manitoba sunday night 
into monday morning. by monday night, this low will force the 30.0 
inch high over the great lakes as the low weakens to 29.5 inches 
over western hudson bay. tuesday, the high builds to 30.1 inches as 
it moves over the east coast while the low expands over the rest of 
hudson bay. wednesday and thursday, the high merges with a 30.3 inch 
bermuda high, sending a 30.0 inch ridge over lake superior while the 
low retrogrades back to northern manitoba, weakening to 29.6 inches.




lsz266-010800-
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-
1001 pm edt fri jul 31 2026

.rest of tonight...west winds 5 to 15 knots veering northwest
late. patchy fog. a slight chance of thunderstorms by midnight. a
chance of showers. waves calm to 2 feet. 
.saturday...north winds 5 to 15 knots becoming northeast 10 to
20 knots in the afternoon, then backing north late. patchy fog
through early afternoon. a slight chance of showers. waves
building to 1 to 3 feet, then subsiding to calm to 2 feet. 
.saturday night...north winds 10 to 20 knots veering northeast
after midnight. waves building to 1 to 3 feet. 
.sunday...northeast winds 10 to 20 knots becoming north 5 to
15 knots by mid afternoon. waves subsiding to calm to 2 feet. 
.sunday night...north winds 5 to 15 knots veering east after
midnight. waves calm to 2 feet. 
.monday...southeast winds 5 to 15 knots backing east by mid
afternoon. waves calm to 2 feet. 
.monday night...southeast winds 10 to 20 knots veering south
after midnight. waves calm to 2 feet. 
.tuesday...south winds 5 to 15 knots becoming west 10 to
20 knots. a chance of showers. waves calm to 2 feet. 
.wednesday...northwest winds 5 to 15 knots backing west. waves
calm to 2 feet. 

$$

fzus63 kmqt 010201
glfls 
expires:202608010800;;418279

open lake forecast for lake superior
national weather service marquette mi
1001 pm edt fri jul 31 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... 

this evening, a 29.7 inch low is over eastern iowa while a 30.0 inch 
high is over manitoba. through the weekend, the high shifts over 
northern ontario while the low shifts south of the great lakes. by 
sunday night, the 30.0 inch high over northeast ontario and james 
bay will extend 29.9 inch ridging over the lake while the low moves 
over the appalachian range at 29.8 inches. meanwhile, a 29.3 inch 
low will move from saskatchewan into northern manitoba sunday night 
into monday morning. by monday night, this low will force the 30.0 
inch high over the great lakes as the low weakens to 29.5 inches 
over western hudson bay. tuesday, the high builds to 30.1 inches as 
it moves over the east coast while the low expands over the rest of 
hudson bay. wednesday and thursday, the high merges with a 30.3 inch 
bermuda high, sending a 30.0 inch ridge over lake superior while the 
low retrogrades back to northern manitoba, weakening to 29.6 inches.




lsz267-010800-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
1001 pm edt fri jul 31 2026

.rest of tonight...west winds 5 to 15 knots veering northwest
late. patchy smoke by midnight. areas of dense fog. showers
likely by midnight. a slight chance of thunderstorms. a chance of
showers after midnight. waves calm to 2 feet. 
.saturday...north winds 5 to 15 knots veering northeast in the
afternoon, then becoming north 10 to 20 knots late. patchy fog
through early afternoon. a chance of showers and a slight chance
of thunderstorms. waves building to 1 to 3 feet, then subsiding
to calm to 2 feet. 
.saturday night...northeast winds 10 to 20 knots. waves building
to 1 to 3 feet. 
.sunday...north winds 10 to 20 knots. waves subsiding to calm to
2 feet. 
.sunday night...north winds 5 to 15 knots veering northeast after
midnight. waves calm to 2 feet. 
.monday...northeast winds 5 to 15 knots backing north by mid
afternoon. waves calm to 2 feet. 
.monday night...southeast winds 5 to 15 knots veering south after
midnight. waves calm to 2 feet. 
.tuesday...southeast winds 5 to 15 knots veering south. a chance
of showers. waves calm to 2 feet. 
.wednesday...west winds 5 to 15 knots. waves calm to 2 feet. 

$$