fzus63 kdtx 121358
glflh 
expires:202610122200;;972271

open lake forecast for lake huron
national weather service detroit/pontiac mi
958 am edt mon oct 12 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, 29.60 inches, will then push from the
central plains into the great lakes tomorrow morning, bringing
the next potential for rain showers and isolated thunderstorms.
departure of this system will then facilitate the passage of a
cold front wednesday morning, bringing breezy northwest flow
across northern lake huron.


lhz361-362-122200-
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-
958 am edt mon oct 12 2026

.rest of today...north winds 5 to 15 knots veering to the east in
the afternoon. waves 1 to 3 feet. 
.tonight...east winds 10 to 15 knots increasing to 15 to 20 knots
late in the evening...then decreasing to 10 to 15 knots after
midnight. rain likely and a chance of thunderstorms after
midnight. waves 2 to 4 feet. 
.tuesday...east winds 10 to 15 knots. rain likely and a chance of
thunderstorms in the morning...then a chance of rain in the
afternoon. waves 2 to 4 feet. 
.tuesday night...northwest winds 5 to 10 knots. waves 1 to
3 feet. 
.wednesday...northwest winds 10 to 15 knots increasing to 15 to
20 knots late in the afternoon...then becoming north 10 to
15 knots late in the evening. waves 1 to 3 feet building to 3 to
5 feet. 
.thursday...northeast winds 10 to 15 knots becoming east 5 to
10 knots. a chance of rain early in the evening. rain likely by
midnight. waves 1 to 3 feet. 
.friday...west winds 10 to 15 knots with gusts to around 30 knots
becoming northwest to 30 knots with gusts to 45 knot gales in the
late morning and early afternoon...then increasing to 35 knot
gales with gusts to 45 knot gales early in the evening decreasing
to 30 knots with gusts to 45 knot gales by midnight. rain likely
early in the morning...then a chance of rain until early evening.
waves 3 to 5 feet building to 10 to 14 feet. waves occasionally
around 18 feet. a gale warning may be needed. 


$$

fzus63 kdtx 121358
glflh 
expires:202610122200;;972272

open lake forecast for lake huron
national weather service detroit/pontiac mi
958 am edt mon oct 12 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, 29.60 inches, will then push from the
central plains into the great lakes tomorrow morning, bringing
the next potential for rain showers and isolated thunderstorms.
departure of this system will then facilitate the passage of a
cold front wednesday morning, bringing breezy northwest flow
across northern lake huron.


lhz363-122200-
lake huron from sturgeon point to alabaster mi beyond 5nm off
shore-
958 am edt mon oct 12 2026

.rest of today...southwest winds 10 to 15 knots becoming south
5 to 10 knots late in the afternoon. waves 1 to 3 feet. 
.tonight...south winds 5 to 10 knots becoming southeast 10 to
15 knots in the late evening and overnight. rain likely and a
chance of thunderstorms after midnight. waves 1 to 3 feet. 
.tuesday...southeast winds 5 to 10 knots becoming southwest 10 to
15 knots in the late morning and afternoon. a chance of rain in
the morning. waves 1 to 3 feet building to 2 to 4 feet early in
the afternoon. 
.tuesday night...north winds 10 to 15 knots becoming northwest
5 to 10 knots in the late evening and overnight. waves 2 to
4 feet subsiding to 1 to 3 feet in the late evening and
overnight. 
.wednesday...northwest winds 10 to 15 knots increasing to 15 to
20 knots late in the afternoon...then becoming northwest 15 to
20 knots late in the evening. waves 1 to 3 feet building to 2 to
4 feet. 
.thursday...northeast winds 10 to 15 knots becoming east 5 to
10 knots until early evening...then veering to the southeast by
midnight. rain likely . waves 1 to 3 feet. 
.friday...west winds 15 to 20 knots becoming northwest at 35 knot
gales with gusts to 45 knot gales. rain likely until afternoon...
then a chance of rain . waves 3 to 5 feet building to 12 to
16 feet. waves occasionally around 20 feet. a gale warning may be
needed. 


$$

fzus63 kdtx 121358
glflh 
expires:202610122200;;972273

open lake forecast for lake huron
national weather service detroit/pontiac mi
958 am edt mon oct 12 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, 29.60 inches, will then push from the
central plains into the great lakes tomorrow morning, bringing
the next potential for rain showers and isolated thunderstorms.
departure of this system will then facilitate the passage of a
cold front wednesday morning, bringing breezy northwest flow
across northern lake huron.


lhz462>464-122200-
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-
958 am edt mon oct 12 2026

.rest of today...southwest winds around 15 knots becoming in the 
afternoon. waves 1 to 3 feet. 
.tonight...south winds 10 to 15 knots decreasing to 5 to 10 knots
after midnight. rain likely and a chance of thunderstorms after
midnight. waves 1 to 3 feet. 
.tuesday...southwest winds 10 to 15 knots. a chance of rain.
waves 1 to 3 feet building to 2 to 4 feet early in the afternoon.
.tuesday night...west winds 10 to 15 knots becoming northwest
5 to 10 knots in the late evening and overnight. waves 2 to
4 feet subsiding to 1 to 3 feet in the late evening and
overnight. 
.wednesday...northwest winds 5 to 10 knots becoming north 10 to
15 knots. waves 1 to 3 feet building to 2 to 4 feet late in the
afternoon. 
.thursday...northeast winds 10 to 15 knots becoming southeast
5 to 10 knots . rain likely . waves 2 to 4 feet subsiding to 1 to
3 feet. 
.friday...west winds 15 to 20 knots becoming northwest at 35 knot
gales with gusts to 45 knot gales. rain likely until afternoon...
then a chance of rain . waves 3 to 5 feet building to 15 to
20 feet. waves occasionally around 25 feet. a gale warning may be
needed. 


$$

fzus63 kdtx 120742
glflh 
expires:202610121545;;958418

open lake forecast for lake huron
national weather service detroit/pontiac mi
342 am edt mon oct 12 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, 29.60 inches, will then push from the
central plains into the great lakes tomorrow morning, bringing
the next potential for rain showers and isolated thunderstorms.
departure of this system will then facilitate the passage of a
cold front wednesday morning, bringing breezy northwest flow
across northern lake huron.


lhz362-363-121545-
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-
342 am edt mon oct 12 2026

.today...southwest winds 10 to 15 knots becoming south 5 to
10 knots early in the afternoon...then backing to the east late
in the afternoon. waves 1 to 3 feet. 
.tonight...east winds 10 to 15 knots becoming northeast 5 to
10 knots early in the morning. a chance of rain and thunderstorms
after midnight. waves 1 to 3 feet building to 2 to 4 feet in the
late evening and overnight. 
.tuesday...east winds 10 to 15 knots. a chance of rain. waves
1 to 3 feet. 
.tuesday night...northwest winds 10 to 15 knots decreasing to
5 to 10 knots in the late evening and overnight. waves 1 to
3 feet. 
.wednesday...northwest winds 10 to 15 knots increasing to 15 to
20 knots late in the afternoon...then becoming north 10 to
15 knots late in the evening. waves 2 to 4 feet building to 3 to
5 feet. 
.thursday...northeast winds 10 to 15 knots becoming east 5 to
10 knots until early evening...then veering to the southeast by
midnight. rain likely . waves 2 to 4 feet subsiding to 1 to
3 feet until early evening...then building to 2 to 4 feet by
midnight. 
.friday...west winds 15 to 20 knots with gusts to around 30 knots
becoming northwest to 30 knots with gusts to 45 knot gales in the
late morning and early afternoon...then increasing to 35 knot
gales with gusts to 45 knot gales early in the evening decreasing
to 30 knots with gusts to 45 knot gales by midnight. rain likely
until afternoon...then a chance of rain early in the evening.
waves 3 to 5 feet building to 12 to 16 feet. waves occasionally
around 20 feet. a gale warning may be needed. 


$$

fzus63 kdtx 120742
glflh 
expires:202610121545;;958417

open lake forecast for lake huron
national weather service detroit/pontiac mi
342 am edt mon oct 12 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, 29.60 inches, will then push from the
central plains into the great lakes tomorrow morning, bringing
the next potential for rain showers and isolated thunderstorms.
departure of this system will then facilitate the passage of a
cold front wednesday morning, bringing breezy northwest flow
across northern lake huron.


lhz361-121545-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
342 am edt mon oct 12 2026

.today...light and variable winds becoming northeast 5 to
10 knots early in the afternoon...then becoming east 10 to
15 knots late in the afternoon. waves 2 feet or less. 
.tonight...east winds 15 to 20 knots. rain and a chance of
thunderstorms after midnight. waves 1 to 3 feet building to 2 to
4 feet in the late evening and overnight. 
.tuesday...east winds 10 to 15 knots becoming north 5 to 10 knots
early in the afternoon. a chance of rain and thunderstorms in the
morning...then a chance of rain in the afternoon. waves 2 to
4 feet. 
.tuesday night...northwest winds 5 to 10 knots increasing to
10 to 15 knots after midnight. waves 2 feet or less. 
.wednesday...northwest winds 10 to 15 knots becoming north 5 to
10 knots late in the evening. waves 1 to 3 feet building to 2 to
4 feet. 
.thursday...northeast winds 10 to 15 knots becoming southeast
5 to 10 knots. rain likely by midnight. waves 1 to 3 feet. 
.friday...west winds 10 to 15 knots with gusts to around 30 knots
becoming northwest to 30 knots with gusts to 45 knot gales until
early evening...then decreasing to 20 to 25 knots with gusts to
40 knot gales by midnight. rain likely early in the morning...
then a chance of rain until early evening. waves 3 to 5 feet
building to 8 to 12 feet. waves occasionally around 15 feet. 


$$

fzus63 kmkx 121402
glflm 
expires:202610122130;;972484

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
902 am cdt mon oct 12 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...

broad low pressure around 29.5 inches over the central plains to
minnesota will drive south-southwesterly winds through today. 
this low is expected to lift into central wisconsin by this 
evening. expecting scattered showers and isolated thunderstorms to
develop tonight as the low approaches and crosses the open 
waters. winds shift to northwesterly on tuesday as an associated 
cold front crosses the lake and the low pressure exits east. the 
front may stall just south of the lake tuesday night, with a light
northerly breeze across the lake and shower/thunderstorm 
potential towards the southern end of the lake. 

high pressure around 30.2 inches building into the northern plains
will keep winds northerly into wednesday, turning northeasterly
wednesday night and easterly into thursday as the high pressure
passes north of the lake and low pressure of 29.9 inches develops
near missouri/illinois. 

low pressure looks to cross lake michigan thursday night, with
strong high pressure building from western canada into the 
dakotas/nebraska into friday. expect strong northwest winds  
friday through friday night, with high confidence in widespread
gales. a few gusts approaching storm force could be possible.


lmz080-669-671-673-675-777-779-870-872-874-876-878-122130-
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-
902 am cdt mon oct 12 2026

sheboygan wi to pentwater mi south...

.rest of today...south winds 10 to 20 kt. waves 3 to 5 ft. 
.tonight...south winds 10 to 20 kt becoming southwest 15 to
25 kt. slight chance of showers and thunderstorms. waves 3 to
5 ft building to 4 to 6 ft occasionally to 8 ft. 
.tuesday...west winds 15 to 25 kt becoming northwest 10 to 20 kt.
waves 4 to 7 ft occasionally to 9 ft subsiding to 3 to 5 ft. 
.tuesday night...north winds 10 to 15 kt. chance of showers.
waves 2 to 4 ft subsiding to 1 to 2 ft. 
.wednesday...northeast winds 10 to 20 kt becoming north. chance
of showers. waves 2 to 4 ft building to 4 to 6 ft occasionally to
8 ft. 
.wednesday night...northeast winds 10 to 20 kt. waves 4 to 6 ft
occasionally to 8 ft. 
.thursday...east winds 15 to 25 kt diminishing to 10 to 20 kt.
showers likely. waves 4 to 6 ft occasionally to 8 ft. 
.friday...northwest gales to 45 kt. chance of showers. waves 14 
to 18 ft occasionally to 23 ft building to 15 to 20 ft 
occasionally to 26 ft. 

$$

fzus63 kmkx 121402
glflm 
expires:202610122130;;972483

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
902 am cdt mon oct 12 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...

broad low pressure around 29.5 inches over the central plains to
minnesota will drive south-southwesterly winds through today. 
this low is expected to lift into central wisconsin by this 
evening. expecting scattered showers and isolated thunderstorms to
develop tonight as the low approaches and crosses the open 
waters. winds shift to northwesterly on tuesday as an associated 
cold front crosses the lake and the low pressure exits east. the 
front may stall just south of the lake tuesday night, with a light
northerly breeze across the lake and shower/thunderstorm 
potential towards the southern end of the lake. 

high pressure around 30.2 inches building into the northern plains
will keep winds northerly into wednesday, turning northeasterly
wednesday night and easterly into thursday as the high pressure
passes north of the lake and low pressure of 29.9 inches develops
near missouri/illinois. 

low pressure looks to cross lake michigan thursday night, with
strong high pressure building from western canada into the 
dakotas/nebraska into friday. expect strong northwest winds  
friday through friday night, with high confidence in widespread
gales. a few gusts approaching storm force could be possible.


lmz261-362-364-366-563-565-567-868-122130-
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-
902 am cdt mon oct 12 2026

sheboygan wi to pentwater mi north...

.rest of today...south winds 10 to 20 kt becoming southeast.
waves 3 to 5 ft. 
.tonight...southeast winds 15 to 25 kt becoming south to 30 kt.
chance of showers and thunderstorms. waves 3 to 5 ft.
.tuesday...northwest winds 15 to 25 kt diminishing to 10 to
20 kt. chance of showers in the morning. waves 3 to 5 ft
subsiding to 2 to 4 ft. 
.tuesday night...north winds 10 to 15 kt. waves 1 to 3 ft
subsiding to 1 to 2 ft. 
.wednesday...north winds 10 to 20 kt. waves 2 to 4 ft. 
.wednesday night...north winds 10 to 20 kt becoming northeast.
waves 2 to 4 ft. 
.thursday...east winds 10 to 20 kt becoming southeast 10 to
15 kt. chance of rain showers. waves 2 to 4 ft. 
.friday...northwest gales to 45 kt. chance of showers. waves 12 
to 16 ft occasionally to 21 ft. 

$$

fzus63 kmqt 121401
glfls 
expires:202610122000;;972400

open lake forecast for lake superior
national weather service marquette mi
1001 am edt mon oct 12 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 under a 29.9 inch trough associated with 
a 29.5 inch colorado low. to the north, a 30.4 inch high is sprawled 
out over central canada. by this afternoon, the high will weaken to 
30.2 inches along the hudson bay shore of northern ontario while the 
colorado low moves to the missouri river basin, weakening to 29.6 
inches. this low weakens further to 29.7 inches as it shifts over 
northern lake michigan tuesday morning while the high progresses 
into quebec, sending troughing to 29.8 inches over lake superior on 
tuesday. ridging dominates over lake superior midweek as the low 
continues marching east and high pressure of 30.2 inches builds over 
the dakotas by wednesday afternoon. the high further builds to 30.3 
inches over lake superior wednesday night while a 29.7 inch low 
develops over saskatchewan. by thursday evening, this low weakens to 
29.9 inches over northern ontario as the high moves to new england. 
behind the low, expansive 30.7 inch high builds over eastern montana 
before expanding over the plains for friday. pressure increases 
rapidly over the upper great lakes friday afternoon into saturday, 
reaching 30.4 inches by saturday morning, then decreasing to 30.0 
inches by saturday night as the high collapses southeast.




lsz162-122000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1001 am edt mon oct 12 2026 /901 am cdt mon oct 12 2026/

...gale warning in effect through late tonight...

.rest of today...northeast gales to 40 knots. a chance of
showers. waves 8 to 11 feet occasionally to 14 feet building to
9 to 12 feet occasionally to 15 feet, then subsiding to 8 to
11 feet occasionally to 14 feet. 
.tonight...northeast gales to 35 knots diminishing to 20 to
30 knots late. showers and a slight chance of thunderstorms
through midnight, then a chance of showers after midnight. waves
subsiding to 5 to 8 feet occasionally to 10 feet. 
.tuesday...northeast winds 10 to 20 knots becoming west 5 to
15 knots in the afternoon. waves subsiding to 1 to 3 feet. 
.tuesday night...northwest winds 5 to 15 knots. waves subsiding
to calm to 2 feet. 
.wednesday...northwest winds 5 to 15 knots. waves calm to 2 feet.
.wednesday night...northeast winds 5 to 15 knots veering
southeast after midnight. waves calm to 2 feet. 
.thursday...southwest winds 10 to 20 knots becoming northwest
gales to 40 knots. a chance of showers. waves building to 5 to
8 feet occasionally to 10 feet. 
.friday...northwest gales to 40 knots diminishing to 20 to
30 knots. waves building to 7 to 10 feet occasionally to 13 feet,
then subsiding to calm to 2 feet. 

$$

fzus63 kmqt 121401
glfls 
expires:202610122000;;972401

open lake forecast for lake superior
national weather service marquette mi
1001 am edt mon oct 12 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 under a 29.9 inch trough associated with 
a 29.5 inch colorado low. to the north, a 30.4 inch high is sprawled 
out over central canada. by this afternoon, the high will weaken to 
30.2 inches along the hudson bay shore of northern ontario while the 
colorado low moves to the missouri river basin, weakening to 29.6 
inches. this low weakens further to 29.7 inches as it shifts over 
northern lake michigan tuesday morning while the high progresses 
into quebec, sending troughing to 29.8 inches over lake superior on 
tuesday. ridging dominates over lake superior midweek as the low 
continues marching east and high pressure of 30.2 inches builds over 
the dakotas by wednesday afternoon. the high further builds to 30.3 
inches over lake superior wednesday night while a 29.7 inch low 
develops over saskatchewan. by thursday evening, this low weakens to 
29.9 inches over northern ontario as the high moves to new england. 
behind the low, expansive 30.7 inch high builds over eastern montana 
before expanding over the plains for friday. pressure increases 
rapidly over the upper great lakes friday afternoon into saturday, 
reaching 30.4 inches by saturday morning, then decreasing to 30.0 
inches by saturday night as the high collapses southeast.




lsz263-122000-
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 am edt mon oct 12 2026

...gale warning in effect until noon edt today...

.rest of today...northeast winds 20 to 30 knots increasing to
gales to 35 knots in the afternoon, then diminishing to 20 to
30 knots late. a chance of showers. waves 8 to 11 feet
occasionally to 14 feet subsiding to 7 to 10 feet occasionally to
13 feet. 
.tonight...northeast winds 20 to 30 knots diminishing to 15 to
25 knots late. a slight chance of thunderstorms through midnight.
showers. waves subsiding to 5 to 8 feet occasionally to 10 feet. 
.tuesday...northeast winds 10 to 20 knots becoming north 5 to
15 knots in the afternoon, then backing west late. a slight
chance of showers through early afternoon. waves subsiding to
1 to 3 feet. 
.tuesday night...northwest winds 5 to 15 knots. waves subsiding
to calm to 2 feet. 
.wednesday...northwest winds 5 to 15 knots. waves calm to 2 feet.
.wednesday night...north winds 5 to 15 knots veering southeast
after midnight. waves calm to 2 feet. 
.thursday...south winds 15 to 25 knots becoming northwest gales
to 45 knots. a chance of rain showers. waves building to 8 to
11 feet occasionally to 14 feet. 
.friday...north gales to 45 knots becoming northwest gales to
40 knots. waves building to 10 to 14 feet occasionally to
18 feet, then subsiding to 1 to 3 feet. 

$$

fzus63 kmqt 121401
glfls 
expires:202610122000;;972402

open lake forecast for lake superior
national weather service marquette mi
1001 am edt mon oct 12 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 under a 29.9 inch trough associated with 
a 29.5 inch colorado low. to the north, a 30.4 inch high is sprawled 
out over central canada. by this afternoon, the high will weaken to 
30.2 inches along the hudson bay shore of northern ontario while the 
colorado low moves to the missouri river basin, weakening to 29.6 
inches. this low weakens further to 29.7 inches as it shifts over 
northern lake michigan tuesday morning while the high progresses 
into quebec, sending troughing to 29.8 inches over lake superior on 
tuesday. ridging dominates over lake superior midweek as the low 
continues marching east and high pressure of 30.2 inches builds over 
the dakotas by wednesday afternoon. the high further builds to 30.3 
inches over lake superior wednesday night while a 29.7 inch low 
develops over saskatchewan. by thursday evening, this low weakens to 
29.9 inches over northern ontario as the high moves to new england. 
behind the low, expansive 30.7 inch high builds over eastern montana 
before expanding over the plains for friday. pressure increases 
rapidly over the upper great lakes friday afternoon into saturday, 
reaching 30.4 inches by saturday morning, then decreasing to 30.0 
inches by saturday night as the high collapses southeast.




lsz264-122000-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
1001 am edt mon oct 12 2026

.rest of today...northeast winds 20 to 30 knots veering east in
the afternoon. a chance of showers. waves 7 to 10 feet
occasionally to 13 feet subsiding to 5 to 8 feet occasionally to
10 feet. 
.tonight...east winds 20 to 30 knots becoming northeast 15 to
25 knots late. showers. waves subsiding to 4 to 7 feet
occasionally to 9 feet. 
.tuesday...northeast winds 10 to 20 knots becoming north 5 to
15 knots in the afternoon, then backing northwest late. a slight
chance of showers through early afternoon. waves subsiding to
1 to 3 feet. 
.tuesday night...northwest winds 5 to 15 knots increasing to
10 to 20 knots after midnight. waves subsiding to calm to 2 feet,
then building to 1 to 3 feet. 
.wednesday...northwest winds 10 to 20 knots. waves subsiding to
calm to 2 feet. 
.wednesday night...north winds 5 to 15 knots veering east after
midnight. waves calm to 2 feet. 
.thursday...south winds 5 to 15 knots becoming northwest gales to
45 knots. a chance of showers, then showers likely. waves
building to 7 to 10 feet occasionally to 13 feet. 
.friday...north gales to 45 knots becoming northwest gales to
40 knots. a chance of rain showers. waves building to 11 to
15 feet occasionally to 19 feet, then subsiding to 1 to 3 feet. 

$$

fzus63 kmqt 121401
glfls 
expires:202610122000;;972403

open lake forecast for lake superior
national weather service marquette mi
1001 am edt mon oct 12 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 under a 29.9 inch trough associated with 
a 29.5 inch colorado low. to the north, a 30.4 inch high is sprawled 
out over central canada. by this afternoon, the high will weaken to 
30.2 inches along the hudson bay shore of northern ontario while the 
colorado low moves to the missouri river basin, weakening to 29.6 
inches. this low weakens further to 29.7 inches as it shifts over 
northern lake michigan tuesday morning while the high progresses 
into quebec, sending troughing to 29.8 inches over lake superior on 
tuesday. ridging dominates over lake superior midweek as the low 
continues marching east and high pressure of 30.2 inches builds over 
the dakotas by wednesday afternoon. the high further builds to 30.3 
inches over lake superior wednesday night while a 29.7 inch low 
develops over saskatchewan. by thursday evening, this low weakens to 
29.9 inches over northern ontario as the high moves to new england. 
behind the low, expansive 30.7 inch high builds over eastern montana 
before expanding over the plains for friday. pressure increases 
rapidly over the upper great lakes friday afternoon into saturday, 
reaching 30.4 inches by saturday morning, then decreasing to 30.0 
inches by saturday night as the high collapses southeast.




lsz265-122000-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
1001 am edt mon oct 12 2026

.rest of today...northeast winds 20 to 30 knots veering east in
the afternoon. a chance of showers. waves 5 to 9 feet
occasionally to 11 feet. 
.tonight...east winds 20 to 30 knots. showers and a slight chance
of thunderstorms. waves subsiding to 4 to 7 feet occasionally to
9 feet. 
.tuesday...northeast winds 15 to 25 knots becoming north 10 to
20 knots in the afternoon, then backing northwest late. a slight
chance of showers through early afternoon. waves subsiding to
1 to 3 feet. 
.tuesday night...northwest winds 10 to 20 knots increasing to
15 to 25 knots after midnight. waves subsiding to calm to 2 feet,
then building to 1 to 3 feet. 
.wednesday...northwest winds 15 to 25 knots diminishing to 10 to
20 knots by mid afternoon. waves building to 2 to 4 feet, then
subsiding to 1 to 3 feet. 
.wednesday night...north winds 5 to 15 knots veering east after
midnight. waves subsiding to calm to 2 feet. 
.thursday...south winds 10 to 20 knots becoming northwest gales
to 45 knots. a chance of showers, then showers. waves building to
8 to 11 feet occasionally to 14 feet. 
.friday...north storm force winds to 50 knots becoming northwest
gales to 45 knots. a chance of rain showers. waves building to
15 to 20 feet occasionally to 25 feet, then subsiding to 2 to
4 feet. 

$$

fzus63 kmqt 121401
glfls 
expires:202610122000;;972404

open lake forecast for lake superior
national weather service marquette mi
1001 am edt mon oct 12 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 under a 29.9 inch trough associated with 
a 29.5 inch colorado low. to the north, a 30.4 inch high is sprawled 
out over central canada. by this afternoon, the high will weaken to 
30.2 inches along the hudson bay shore of northern ontario while the 
colorado low moves to the missouri river basin, weakening to 29.6 
inches. this low weakens further to 29.7 inches as it shifts over 
northern lake michigan tuesday morning while the high progresses 
into quebec, sending troughing to 29.8 inches over lake superior on 
tuesday. ridging dominates over lake superior midweek as the low 
continues marching east and high pressure of 30.2 inches builds over 
the dakotas by wednesday afternoon. the high further builds to 30.3 
inches over lake superior wednesday night while a 29.7 inch low 
develops over saskatchewan. by thursday evening, this low weakens to 
29.9 inches over northern ontario as the high moves to new england. 
behind the low, expansive 30.7 inch high builds over eastern montana 
before expanding over the plains for friday. pressure increases 
rapidly over the upper great lakes friday afternoon into saturday, 
reaching 30.4 inches by saturday morning, then decreasing to 30.0 
inches by saturday night as the high collapses southeast.




lsz266-122000-
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 am edt mon oct 12 2026

.rest of today...northeast winds 20 to 30 knots veering east in
the afternoon. a chance of showers. waves 6 to 10 feet
occasionally to 13 feet. 
.tonight...east winds 20 to 30 knots diminishing to 15 to
25 knots late. showers and a slight chance of thunderstorms.
waves subsiding to 4 to 7 feet occasionally to 9 feet. 
.tuesday...northeast winds 15 to 25 knots becoming north 10 to
20 knots in the afternoon, then backing northwest late. a chance
of showers through early afternoon. waves subsiding to 1 to
3 feet. 
.tuesday night...northwest winds 10 to 20 knots increasing to
15 to 25 knots after midnight. waves subsiding to calm to 2 feet,
then building to 1 to 3 feet. 
.wednesday...northwest winds 15 to 25 knots. waves building to
2 to 4 feet. 
.wednesday night...north winds 10 to 20 knots becoming east 5 to
15 knots after midnight. waves subsiding to calm to 2 feet. 
.thursday...south winds 10 to 20 knots becoming northwest gales
to 45 knots. a chance of showers, then showers. waves building to
9 to 12 feet occasionally to 15 feet. 
.friday...north gales to 45 knots backing northwest. a chance of
rain showers. waves building to 15 to 20 feet occasionally to
25 feet, then subsiding to 3 to 6 feet occasionally to 8 feet. 

$$

fzus63 kmqt 121401
glfls 
expires:202610122000;;972405

open lake forecast for lake superior
national weather service marquette mi
1001 am edt mon oct 12 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 under a 29.9 inch trough associated with 
a 29.5 inch colorado low. to the north, a 30.4 inch high is sprawled 
out over central canada. by this afternoon, the high will weaken to 
30.2 inches along the hudson bay shore of northern ontario while the 
colorado low moves to the missouri river basin, weakening to 29.6 
inches. this low weakens further to 29.7 inches as it shifts over 
northern lake michigan tuesday morning while the high progresses 
into quebec, sending troughing to 29.8 inches over lake superior on 
tuesday. ridging dominates over lake superior midweek as the low 
continues marching east and high pressure of 30.2 inches builds over 
the dakotas by wednesday afternoon. the high further builds to 30.3 
inches over lake superior wednesday night while a 29.7 inch low 
develops over saskatchewan. by thursday evening, this low weakens to 
29.9 inches over northern ontario as the high moves to new england. 
behind the low, expansive 30.7 inch high builds over eastern montana 
before expanding over the plains for friday. pressure increases 
rapidly over the upper great lakes friday afternoon into saturday, 
reaching 30.4 inches by saturday morning, then decreasing to 30.0 
inches by saturday night as the high collapses southeast.




lsz267-122000-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
1001 am edt mon oct 12 2026

.rest of today...east winds 20 to 30 knots. a chance of showers.
waves 4 to 8 feet occasionally to 10 feet. 
.tonight...east winds 20 to 30 knots diminishing to 15 to
25 knots late. a slight chance of showers through midnight, then
showers and a slight chance of thunderstorms after midnight.
waves subsiding to 3 to 5 feet occasionally to 7 feet. 
.tuesday...east winds 10 to 20 knots becoming north 5 to 15 knots
in the afternoon, then becoming northwest 10 to 20 knots late. a
chance of showers through early afternoon. waves subsiding to
calm to 2 feet. 
.tuesday night...northwest winds 10 to 20 knots increasing to
15 to 25 knots after midnight. waves building to 2 to 4 feet. 
.wednesday...northwest winds 15 to 25 knots. waves building to
3 to 5 feet occasionally to 7 feet, then subsiding to 2 to
4 feet. 
.wednesday night...north winds 10 to 20 knots veering east after
midnight. waves subsiding to calm to 2 feet. 
.thursday...southeast winds 10 to 20 knots becoming south gales
to 40 knots. a chance of showers, then showers. waves building to
7 to 10 feet occasionally to 13 feet. 
.friday...north gales to 45 knots. a chance of rain showers.
waves building to 15 to 20 feet occasionally to 25 feet, then
subsiding to 3 to 6 feet occasionally to 8 feet. 

$$