fzus63 kdtx 121950
glflh 
expires:202610130400;;986607

open lake forecast for lake huron
national weather service detroit/pontiac mi
350 pm 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 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.


lhz361-362-130400-
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-
350 pm edt mon oct 12 2026

.tonight...east winds 15 to 20 knots. a chance of rain in the
evening...then rain and a chance of thunderstorms after midnight.
waves 3 to 5 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 subsiding to 1 to 3 feet late in the
afternoon. 
.tuesday night...northwest winds 10 to 15 knots decreasing to
5 to 10 knots by midnight...then increasing to 10 to 15 knots
after midnight. waves 1 to 3 feet building to 2 to 4 feet after
midnight. 
.wednesday...northwest winds 15 to 20 knots. waves 3 to 5 feet. 
.wednesday night...northwest winds 15 to 20 knots becoming north
10 to 15 knots in the late evening and overnight. waves 3 to
5 feet. 
.thursday...east winds 5 to 10 knots becoming south 10 to
15 knots late in the evening. rain likely late in the afternoon.
rain late in the evening. waves 1 to 3 feet. 
.friday...west winds 20 to 25 knots with gusts to 35 knot gales
becoming northwest at 40 knot gales with storm force gusts to
50 knots until early evening...then decreasing to 30 knots with
gusts to 45 knot gales by midnight. rain early in the morning.
rain likely in the late morning and early afternoon...then a
chance of rain early in the evening. waves 6 to 9 feet building
to 14 to 18 feet. waves occasionally around 23 feet. a gale
warning may be needed. 
.saturday...northwest winds 20 to 25 knots with gusts to 35 knot
gales becoming west 15 to 20 knots with gusts to around 30 knots
early in the evening...then decreasing to 10 to 15 knots by
midnight. waves 6 to 9 feet subsiding to 3 to 5 feet by midnight.
waves occasionally around 12 feet. 


$$

fzus63 kdtx 121950
glflh 
expires:202610130400;;986608

open lake forecast for lake huron
national weather service detroit/pontiac mi
350 pm 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 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.


lhz363-462-130400-
lake huron from sturgeon point to alabaster mi beyond 5nm off
shore-
lake huron from port austin to harbor beach beyond 5nm off shore-
350 pm edt mon oct 12 2026

.tonight...east winds 5 to 10 knots becoming northeast 10 to
15 knots late in the evening...then decreasing to 5 to 10 knots
after midnight. a chance of rain and thunderstorms after
midnight. waves 1 to 3 feet building to 2 to 4 feet after
midnight. 
.tuesday...southeast winds 5 to 10 knots becoming southwest 10 to
15 knots in the late morning and early afternoon...then veering
to the west late in the afternoon. a chance of rain in the
morning. waves 1 to 3 feet building to 2 to 4 feet in the
afternoon. 
.tuesday night...northwest winds 10 to 15 knots. waves 2 to
4 feet subsiding to 1 to 3 feet after midnight. 
.wednesday...northwest winds 10 to 15 knots. waves 2 to 4 feet. 
.wednesday night...north winds 15 to 20 knots decreasing to 10 to
15 knots after midnight. waves 3 to 5 feet. 
.thursday...northeast winds 10 to 15 knots becoming east 5 to
10 knots late in the morning...then veering to the southeast late
in the evening. rain likely late in the afternoon. rain late in
the evening. waves 2 to 4 feet subsiding to 1 to 3 feet. 
.friday...west winds 20 to 25 knots with gusts to around 30 knots
becoming northwest at 40 knot gales with storm force gusts to
50 knots. rain early in the morning. a chance of rain. waves 6 to
9 feet building to 15 to 20 feet. waves occasionally around
25 feet. a gale warning may be needed. 
.saturday...northwest winds to 30 knots with gusts to 35 knot
gales decreasing to 20 to 25 knots with gusts to around 30 knots
in the late morning and early afternoon...then becoming west
15 to 20 knots . waves 10 to 14 feet subsiding to 4 to 6 feet .
waves occasionally around 18 feet. 


$$

fzus63 kmkx 121945
glflm 
expires:202610130315;;986541

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
245 pm 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...

low pressure around 29.6 inches centered over southern minnesota
will progress eastward overnight tonight, bringing increasing
southwesterly winds shifting to northwesterly as low pressure
exits. a few thunderstorms are possible this evening into
tonight as low pressure approaches and crosses the lake. winds
become light and variable into the afternoon hours tuesday and 
continue into wednesday as high pressure of 30.3 inches builds 
toward the region. isolated thunderstorms are possible across
the far southern portions of the lake tuesday night. winds 
become northerly across the southern half on wednesday as high
pressure moves eastward over the northern half of the lake, then
easterly into wednesday night as high pressure moves eastward.
winds weaken into thursday as low pressure moves east through
the mississippi valley, then become northwesterly gales thursday
night into friday as low pressure moves into the eastern great 
lakes and intensifies. a few thunderstorms are possible as low
pressure moves through the region. a few storm force gusts are 
possible friday.


lmz261-362-364-366-563-565-567-868-130315-
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-
245 pm cdt mon oct 12 2026

sheboygan wi to pentwater mi north...

.tonight...east winds 15 to 25 kt becoming south to 30 kt. chance
of showers and thunderstorms. waves 3 to 5 ft building to 4 to
6 ft occasionally to 8 ft. 
.tuesday...west winds 10 to 20 kt veering to northwest. chance of
showers and slight chance of thunderstorms in the morning. waves
3 to 5 ft subsiding to 2 to 4 ft. 
.tuesday night...north winds 10 to 20 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 15 kt becoming southeast. waves 2 to
4 ft subsiding to 1 to 3 ft. 
.thursday night...southwest winds 10 to 20 kt veering to west
gales to 40 kt. showers likely. waves 1 to 3 ft building to 5 to
8 ft occasionally to 10 ft. 
.friday...northwest gales to 45 kt. chance of showers. waves
12 to 16 ft occasionally to 21 ft. 
.saturday...northwest winds 15 to 25 kt becoming west to 30 kt.
waves 4 to 7 ft occasionally to 9 ft subsiding to 2 to 4 ft.  

$$

fzus63 kmkx 121945
glflm 
expires:202610130315;;986542

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
245 pm 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...

low pressure around 29.6 inches centered over southern minnesota
will progress eastward overnight tonight, bringing increasing
southwesterly winds shifting to northwesterly as low pressure
exits. a few thunderstorms are possible this evening into
tonight as low pressure approaches and crosses the lake. winds
become light and variable into the afternoon hours tuesday and 
continue into wednesday as high pressure of 30.3 inches builds 
toward the region. isolated thunderstorms are possible across
the far southern portions of the lake tuesday night. winds 
become northerly across the southern half on wednesday as high
pressure moves eastward over the northern half of the lake, then
easterly into wednesday night as high pressure moves eastward.
winds weaken into thursday as low pressure moves east through
the mississippi valley, then become northwesterly gales thursday
night into friday as low pressure moves into the eastern great 
lakes and intensifies. a few thunderstorms are possible as low
pressure moves through the region. a few storm force gusts are 
possible friday.


lmz080-669-671-673-675-777-779-870-872-874-876-878-130315-
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-
245 pm cdt mon oct 12 2026

sheboygan wi to pentwater mi south...

.tonight...south winds 10 to 20 kt becoming southwest 15 to
25 kt. slight chance of showers and thunderstorms this evening,
then slight chance of showers overnight. waves 3 to 5 ft building
to 4 to 6 ft occasionally to 8 ft. 
.tuesday...southwest winds 15 to 25 kt becoming west late in the
morning, then diminishing to 10 to 20 kt early in the afternoon
becoming northwest 10 to 15 kt late. waves 4 to 6 ft occasionally
to 8 ft subsiding to 2 to 4 ft. 
.tuesday night...north winds 5 to 10 kt becoming northeast.
chance of showers overnight. waves 1 to 3 ft subsiding to 1 to
2 ft. 
.wednesday...northeast winds 10 to 20 kt becoming north. waves
2 to 4 ft building to 3 to 5 ft. 
.wednesday night...northeast winds 10 to 20 kt. waves 4 to 6 ft
occasionally to 8 ft. 
.thursday...east winds 10 to 20 kt. chance of showers in the
morning, then showers likely in the afternoon. waves 4 to 6 ft
occasionally to 8 ft. 
.thursday night...southeast winds 10 to 15 kt veering to
northwest gales to 40 kt. showers likely. waves 2 to 4 ft
building to 7 to 10 ft occasionally to 13 ft. 
.friday...northwest gales to 45 kt. chance of showers. waves 15 
to 20 ft occasionally to 26 ft. 
.saturday...northwest winds 10 to 20 kt becoming west. waves 6 to
9 ft occasionally to 12 ft subsiding to 4 to 6 ft occasionally to
8 ft.  

$$

fzus63 kmqt 122001
glfls 
expires:202610130800;;987004

open lake forecast for lake superior
national weather service marquette mi
401 pm 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 remains under a 29.9 inch trough associated with a 
29.6 inch colorado low. to the north, a 30.2 inch high is sprawled 
out over central canada. tonight, the colorado low moves into 
wisconsin, weakening to 29.7 inches. tuesday morning, the high 
progresses into quebec, allowing 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 
29.9 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 30.6 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.




lsz162-130800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
401 pm edt mon oct 12 2026 /301 pm cdt mon oct 12 2026/

...gale warning in effect until 11 pm edt /10 pm cdt/ this
evening...

.late this afternoon...northeast gales to 40 knots. a chance of
showers. waves 9 to 12 feet occasionally to 15 feet subsiding to
8 to 11 feet occasionally to 14 feet. 
.tonight...northeast gales to 35 knots diminishing to 20 to
30 knots late. patchy fog through midnight. 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 north 5 to
15 knots in the afternoon, then backing west late. 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.
.wednesday...northwest winds 5 to 15 knots backing west by mid
afternoon. waves calm to 2 feet. 
.wednesday night...east winds 5 to 15 knots veering southeast
after midnight. waves calm to 2 feet. 
.thursday...south winds 5 to 15 knots becoming southwest 10 to
20 knots by mid afternoon. waves calm to 2 feet. 
.thursday night...west gales to 35 knots becoming northwest gales
to 40 knots after midnight. waves building to 6 to 9 feet
occasionally to 11 feet. 
.friday...northwest gales to 45 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. 
.saturday...southwest winds 15 to 25 knots increasing to gales to
40 knots. waves building to 6 to 9 feet occasionally to 11 feet. 

$$

fzus63 kmqt 122001
glfls 
expires:202610130800;;987005

open lake forecast for lake superior
national weather service marquette mi
401 pm 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 remains under a 29.9 inch trough associated with a 
29.6 inch colorado low. to the north, a 30.2 inch high is sprawled 
out over central canada. tonight, the colorado low moves into 
wisconsin, weakening to 29.7 inches. tuesday morning, the high 
progresses into quebec, allowing 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 
29.9 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 30.6 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.




lsz263-130800-
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 mon oct 12 2026

.late this afternoon...east winds 20 to 30 knots. a chance of
showers. waves 7 to 10 feet occasionally to 13 feet. 
.tonight...east winds 20 to 30 knots backing northeast late.
patchy fog. showers through midnight. a chance of thunderstorms.
a chance of showers after midnight. waves building to 8 to
11 feet occasionally to 14 feet, then 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...west winds 5 to 15 knots veering northwest after
midnight, then increasing to 10 to 20 knots late. waves subsiding
to calm to 2 feet, then building to 1 to 3 feet. 
.wednesday...northwest winds 5 to 15 knots. waves subsiding to
calm to 2 feet. 
.wednesday night...north winds 5 to 15 knots veering southeast
after midnight. waves calm to 2 feet. 
.thursday...south winds 10 to 20 knots becoming southwest 15 to
25 knots by mid afternoon. a chance of showers by mid afternoon.
waves building to 1 to 3 feet. 
.thursday night...west gales to 35 knots becoming northwest storm
force winds to 50 knots after midnight. a chance of rain showers.
waves building to 10 to 14 feet occasionally to 18 feet. 
.friday...northwest storm force winds to 55 knots diminishing to
gales to 40 knots. waves building to 11 to 15 feet occasionally
to 19 feet, then subsiding to 1 to 3 feet. 
.saturday...southwest winds 20 to 30 knots increasing to gales to
35 knots. waves building to 7 to 10 feet occasionally to 13 feet.

$$

fzus63 kmqt 122001
glfls 
expires:202610130800;;987006

open lake forecast for lake superior
national weather service marquette mi
401 pm 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 remains under a 29.9 inch trough associated with a 
29.6 inch colorado low. to the north, a 30.2 inch high is sprawled 
out over central canada. tonight, the colorado low moves into 
wisconsin, weakening to 29.7 inches. tuesday morning, the high 
progresses into quebec, allowing 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 
29.9 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 30.6 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.




lsz264-130800-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
401 pm edt mon oct 12 2026

.late this afternoon...east winds 20 to 30 knots. a slight chance
of showers. waves 5 to 8 feet occasionally to 10 feet. 
.tonight...east winds 20 to 30 knots becoming northeast 15 to
25 knots late. patchy fog. showers through midnight. a slight
chance of thunderstorms. a chance of showers after midnight.
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 diminishing to 5 to
15 knots by mid afternoon. waves building to 2 to 4 feet, then
subsiding to calm to 2 feet. 
.wednesday night...north winds 5 to 15 knots veering southeast
after midnight. waves calm to 2 feet. 
.thursday...south winds 5 to 15 knots increasing to 10 to
20 knots by mid afternoon. a chance of showers by mid afternoon.
waves calm to 2 feet. 
.thursday night...west gales to 35 knots becoming northwest storm
force winds to 55 knots after midnight. showers likely through
midnight, then a chance of showers after midnight. waves building
to 10 to 14 feet occasionally to 18 feet. 
.friday...north storm force winds to 60 knots becoming northwest
gales to 45 knots. waves building to 12 to 17 feet occasionally
to 21 feet, then subsiding to 2 to 4 feet. 
.saturday...west winds 15 to 25 knots becoming southwest 20 to
30 knots. waves subsiding to 1 to 3 feet, then building to 6 to
9 feet occasionally to 11 feet. 

$$

fzus63 kmqt 122001
glfls 
expires:202610130800;;987007

open lake forecast for lake superior
national weather service marquette mi
401 pm 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 remains under a 29.9 inch trough associated with a 
29.6 inch colorado low. to the north, a 30.2 inch high is sprawled 
out over central canada. tonight, the colorado low moves into 
wisconsin, weakening to 29.7 inches. tuesday morning, the high 
progresses into quebec, allowing 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 
29.9 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 30.6 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.




lsz265-130800-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
401 pm edt mon oct 12 2026

.late this afternoon...east winds 20 to 30 knots. a slight chance
of showers. waves 5 to 9 feet occasionally to 11 feet. 
.tonight...east winds 20 to 30 knots diminishing to 15 to
25 knots late. patchy fog. 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. patchy
fog through early afternoon. 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 2 to 4 feet. 
.wednesday...northwest winds 15 to 25 knots diminishing to 10 to
20 knots by mid afternoon. waves 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. a chance of showers by
mid afternoon. waves calm to 2 feet. 
.thursday night...west gales to 35 knots becoming northwest storm
force winds to 55 knots after midnight. showers likely. waves
building to 10 to 14 feet occasionally to 18 feet. 
.friday...northwest storm force winds to 60 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. 
.saturday...west winds 15 to 25 knots becoming southwest 20 to
30 knots. waves subsiding to calm to 2 feet, then building to
3 to 5 feet occasionally to 7 feet. 

$$

fzus63 kmqt 122001
glfls 
expires:202610130800;;987008

open lake forecast for lake superior
national weather service marquette mi
401 pm 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 remains under a 29.9 inch trough associated with a 
29.6 inch colorado low. to the north, a 30.2 inch high is sprawled 
out over central canada. tonight, the colorado low moves into 
wisconsin, weakening to 29.7 inches. tuesday morning, the high 
progresses into quebec, allowing 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 
29.9 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 30.6 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.




lsz266-130800-
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 mon oct 12 2026

.late this afternoon...east winds 20 to 30 knots. waves 6 to
9 feet occasionally to 11 feet. 
.tonight...east winds 20 to 30 knots diminishing to 15 to
25 knots late. patchy fog. showers and a slight chance of
thunderstorms. waves subsiding to 5 to 8 feet occasionally to
10 feet, then building to 6 to 9 feet occasionally to 11 feet. 
.tuesday...northeast winds 15 to 25 knots becoming north 10 to
20 knots in the afternoon, then backing northwest late. patchy
fog through early afternoon. 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 2 to 4 feet. 
.wednesday...northwest winds 15 to 25 knots diminishing to 10 to
20 knots by mid afternoon. waves 2 to 4 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. waves calm to 2 feet. 
.thursday night...south winds 20 to 30 knots becoming northwest
storm force winds to 55 knots after midnight. showers. waves
building to 10 to 14 feet occasionally to 18 feet. 
.friday...north storm force winds to 60 knots becoming northwest
storm force winds to 55 knots. a chance of rain showers. waves
building to 17 to 22 feet occasionally to 28 feet, then subsiding
to 5 to 8 feet occasionally to 10 feet. 
.saturday...west winds 15 to 25 knots becoming southwest 20 to
30 knots. waves subsiding to 1 to 3 feet, then building to 3 to
6 feet occasionally to 8 feet. 

$$

fzus63 kmqt 122001
glfls 
expires:202610130800;;987009

open lake forecast for lake superior
national weather service marquette mi
401 pm 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 remains under a 29.9 inch trough associated with a 
29.6 inch colorado low. to the north, a 30.2 inch high is sprawled 
out over central canada. tonight, the colorado low moves into 
wisconsin, weakening to 29.7 inches. tuesday morning, the high 
progresses into quebec, allowing 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 
29.9 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 30.6 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.




lsz267-130800-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
401 pm edt mon oct 12 2026

.late this afternoon...east winds 20 to 30 knots. a slight chance
of showers. waves 4 to 7 feet occasionally to 9 feet. 
.tonight...east winds 20 to 30 knots diminishing to 15 to
25 knots late. showers. a slight chance of thunderstorms after
midnight. patchy fog after midnight. waves subsiding to 3 to
5 feet occasionally to 7 feet. 
.tuesday...east winds 10 to 20 knots becoming northeast 5 to
15 knots in the afternoon, then becoming northwest 10 to 20 knots
late. patchy fog through early afternoon. showers likely 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 3 to 5 feet
occasionally to 7 feet. 
.wednesday...northwest winds 15 to 25 knots. waves 3 to 5 feet
occasionally to 7 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...southeast winds 10 to 20 knots veering south by mid
afternoon. waves calm to 2 feet. 
.thursday night...south winds 15 to 25 knots becoming northwest
gales to 40 knots after midnight. showers. waves building to
10 to 14 feet occasionally to 18 feet. 
.friday...north storm force winds to 55 knots diminishing to
gales to 45 knots. a chance of rain showers. waves building to
17 to 22 feet occasionally to 28 feet, then subsiding to 6 to
9 feet occasionally to 11 feet. 
.saturday...west winds 15 to 25 knots becoming southwest 20 to
30 knots. waves subsiding to 2 to 4 feet, then building to 3 to
6 feet occasionally to 8 feet. 

$$