fzus63 kdtx 010202
glflh 
expires:202610011015;;330528

open lake forecast for lake huron
national weather service detroit/pontiac mi
1002 pm edt wed sep 30 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...southwesterly winds out ahead of an approaching cold
front will continue over the area though thursday afternoon
before shifting to the northwest behind the front. occasional
showers will also be possible through friday before drier
conditions move in later friday.


lhz361-011015-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
1002 pm edt wed sep 30 2026

.rest of tonight...south winds 5 to 10 knots. waves 2 feet or
less. 
.thursday...southwest winds 5 to 10 knots becoming west 10 to
15 knots late in the afternoon. a chance of showers. waves 2 feet
or less. 
.thursday night...northwest winds 10 to 15 knots. a chance of
showers in the evening. waves 1 to 3 feet. 
.friday...northwest winds 10 to 15 knots increasing to 15 to
20 knots with gusts to around 30 knots in the late morning and
afternoon. waves 1 to 3 feet building to 3 to 5 feet in the late
morning and afternoon. 
.friday night...northwest winds 15 to 20 knots with gusts to
around 30 knots decreasing to 5 to 10 knots. waves 3 to 5 feet
subsiding to 1 to 3 feet after midnight. 
.saturday...light and variable winds becoming southeast 5 to
10 knots late in the afternoon...then becoming south 10 to
15 knots late in the evening. a chance of showers late in the
evening. waves 2 feet or less. 
.sunday...south winds 10 to 15 knots becoming southwest 15 to
20 knots with gusts to around 30 knots in the late morning and
early afternoon...then veering to the northwest with gusts to
35 knot gales . a chance of showers early in the morning. waves
2 to 4 feet building to 3 to 5 feet. 
.monday...northwest winds 10 to 15 knots decreasing to 5 to
10 knots by midnight. waves 2 to 4 feet subsiding to 1 to 3 feet.


$$

fzus63 kdtx 010202
glflh 
expires:202610011015;;330529

open lake forecast for lake huron
national weather service detroit/pontiac mi
1002 pm edt wed sep 30 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...southwesterly winds out ahead of an approaching cold
front will continue over the area though thursday afternoon
before shifting to the northwest behind the front. occasional
showers will also be possible through friday before drier
conditions move in later friday.


lhz362-363-011015-
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-
1002 pm edt wed sep 30 2026

.rest of tonight...south winds 15 to 20 knots becoming southwest
10 to 15 knots after midnight. a chance of showers. waves 3 to
5 feet. 
.thursday...southwest winds 10 to 15 knots decreasing to 5 to
10 knots late in the afternoon. showers likely in the morning...
then showers in the afternoon. waves 2 to 4 feet. 
.thursday night...west winds 10 to 15 knots becoming northwest
15 to 20 knots in the late evening and overnight. a chance of
showers. waves 2 to 4 feet building to 3 to 5 feet in the late
evening and overnight. 
.friday...northwest winds 10 to 15 knots increasing to 15 to
20 knots with gusts to around 30 knots in the late morning and
afternoon. waves 4 to 6 feet. waves occasionally around 8 feet. 
.friday night...northwest winds 20 to 25 knots with gusts to
around 30 knots decreasing to 10 to 15 knots. waves 5 to 7 feet.
waves occasionally around 10 feet. 
.saturday...north winds 5 to 10 knots in the morning becoming
light and variable...then becoming southeast 5 to 10 knots late
in the afternoon becoming south 10 to 15 knots. waves 2 to 4 feet
subsiding to 2 feet or less. 
.sunday...south winds 10 to 15 knots becoming southwest 15 to
20 knots in the late morning and early afternoon...then veering
to the west with gusts to around 30 knots early in the evening
becoming northwest 20 to 25 knots with gusts to around 30 knots
by midnight. waves 3 to 5 feet building to 6 to 9 feet . waves
occasionally around 12 feet. 
.monday...northwest winds 15 to 20 knots decreasing to 10 to
15 knots by midnight. waves 4 to 6 feet. waves occasionally
around 8 feet. 


$$

fzus63 kdtx 010202
glflh 
expires:202610011015;;330530

open lake forecast for lake huron
national weather service detroit/pontiac mi
1002 pm edt wed sep 30 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...southwesterly winds out ahead of an approaching cold
front will continue over the area though thursday afternoon
before shifting to the northwest behind the front. occasional
showers will also be possible through friday before drier
conditions move in later friday.


lhz462>464-011015-
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-
1002 pm edt wed sep 30 2026

.rest of tonight...south winds 15 to 20 knots decreasing to 10 to
15 knots after midnight. a chance of showers. waves 2 to 4 feet. 
.thursday...southwest winds 10 to 15 knots. showers likely in the
morning...then showers in the afternoon. waves 1 to 3 feet. 
.thursday night...southwest winds 10 to 15 knots veering to the
northwest by midnight...then increasing to 15 to 20 knots after
midnight. showers in the evening...then a chance of showers after
midnight. waves 1 to 3 feet building to 3 to 5 feet in the late
evening and overnight. 
.friday...northwest winds 15 to 20 knots. waves 3 to 5 feet. 
.friday night...north winds 15 to 20 knots decreasing to 10 to
15 knots after midnight. waves 5 to 7 feet. waves occasionally
around 10 feet. 
.saturday...north winds 5 to 10 knots in the morning becoming
light and variable...then becoming south 5 to 10 knots late in
the evening. waves 3 to 5 feet subsiding to 1 to 3 feet. 
.sunday...south winds 10 to 15 knots veering to the west early in
the evening...then becoming northwest 20 to 25 knots by midnight.
waves 1 to 3 feet building to 4 to 6 feet . waves occasionally
around 8 feet. 
.monday...northwest winds 15 to 20 knots. waves 4 to 6 feet. 


$$

fzus63 kmkx 010153
glflm 
expires:202610010930;;330287

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
853 pm cdt wed sep 30 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...

modest southwest winds will continue tonight then shift westerly
ahead of a cold front by the middle of thursday. expect winds to
then shift northwest with the frontal passage thursday afternoon. 
modest to breezy northerly winds are then forecast thursday night
and friday. strong high pressure around 30.4 inches will then overspread
the great lakes friday night. this should bring lighter winds to 
the lake friday night into saturday.

a fast-moving low pressure system around 29.8 inches should move 
across or north of lake superior saturday night, with high 
pressure around 30.4 inches moving southeast into the region by 
early next week. south to southwest winds saturday night should 
veer northwest to north sunday into monday across lake michigan.


lmz080-669-671-673-675-777-779-870-872-874-876-878-010930-
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-
853 pm cdt wed sep 30 2026

sheboygan wi to pentwater mi south...

.rest of tonight...south winds 15 to 25 kt becoming southwest
10 to 20 kt. patchy fog. scattered showers through early evening,
then showers and slight chance of thunderstorms overnight. waves
4 to 7 ft occasionally to 9 ft subsiding to 3 to 5 ft. 
.thursday...south winds 10 to 15 kt veering to northwest 10 to
20 kt. patchy fog. showers and slight chance of thunderstorms.
waves 2 to 4 ft. 
.thursday night...north winds 10 to 20 kt. patchy fog in the
evening. scattered showers in the evening, then chance of showers
overnight. waves 2 to 4 ft building to 4 to 6 ft occasionally to
8 ft. 
.friday...north winds 15 to 25 kt. waves 4 to 7 ft occasionally
to 9 ft. 
.friday night...north winds 10 to 20 kt becoming east 10 to
15 kt. waves 4 to 7 ft occasionally to 9 ft subsiding to 3 to
5 ft. 
.saturday...southeast winds 10 to 15 kt increasing to 10 to
20 kt. waves 2 to 4 ft. 
.saturday night...south winds 10 to 20 kt becoming southwest.
waves 2 to 4 ft. 
.sunday...west winds 10 to 20 kt becoming northwest. waves 3 to
5 ft. 
.monday...north winds 10 to 20 kt. waves 4 to 6 ft occasionally
to 8 ft.  

$$

fzus63 kmkx 010153
glflm 
expires:202610010930;;330286

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
853 pm cdt wed sep 30 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...

modest southwest winds will continue tonight then shift westerly
ahead of a cold front by the middle of thursday. expect winds to
then shift northwest with the frontal passage thursday afternoon. 
modest to breezy northerly winds are then forecast thursday night
and friday. strong high pressure around 30.4 inches will then overspread
the great lakes friday night. this should bring lighter winds to 
the lake friday night into saturday.

a fast-moving low pressure system around 29.8 inches should move 
across or north of lake superior saturday night, with high 
pressure around 30.4 inches moving southeast into the region by 
early next week. south to southwest winds saturday night should 
veer northwest to north sunday into monday across lake michigan.


lmz261-362-364-366-563-565-567-868-010930-
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-
853 pm cdt wed sep 30 2026

sheboygan wi to pentwater mi north...

.rest of tonight...south winds 10 to 20 kt becoming southwest.
patchy fog. scattered showers overnight. waves 4 to 7 ft
occasionally to 9 ft subsiding to 4 to 6 ft occasionally to 8 ft.
.thursday...southwest winds 10 to 20 kt veering to northwest.
patchy fog in the morning. scattered showers. waves 2 to 4 ft
subsiding to 1 to 3 ft. 
.thursday night...north winds 10 to 20 kt becoming northwest.
waves 3 to 5 ft. 
.friday...northwest winds 15 to 25 kt increasing to 30 kt. waves
3 to 5 ft. 
.friday night...north winds to 30 kt diminishing to 5 to 10 kt
overnight. waves 2 to 4 ft subsiding to 1 to 2 ft. 
.saturday...south winds 10 to 15 kt increasing to 10 to 20 kt.
waves 1 to 2 ft building to 2 to 4 ft. 
.saturday night...south winds 10 to 20 kt becoming southwest to
30 kt. chance of showers. waves 2 to 4 ft building to 4 to 6 ft
occasionally to 8 ft. 
.sunday...west winds to 30 kt becoming northwest. waves 4 to 6 ft
occasionally to 8 ft. 
.monday...north winds 10 to 20 kt. waves 2 to 4 ft.  

$$

fzus63 kmqt 010201
glfls 
expires:202610010800;;330462

open lake forecast for lake superior
national weather service marquette mi
1001 pm edt wed sep 30 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...

29.8 inch troughing lingers over the lake through tomorrow morning 
between a 29.0 inch hudson bay low and another 29.7 inch low over 
the south plains. high pressure builds to 30.2 inches over the 
northern plains tomorrow night into friday before shifting east to 
the great lakes friday night and saturday. a weak 29.9 inch trough 
crosses lake superior saturday night and sunday with 30.3 inch high 
pressure quickly returning sunday night into monday. 




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 wed sep 30 2026

.rest of tonight...south winds 10 to 20 knots veering west late.
patchy fog. waves calm to 2 feet. 
.thursday...northwest winds 15 to 25 knots. waves building to
3 to 5 feet occasionally to 7 feet, then subsiding to 2 to
4 feet. 
.thursday night...northwest winds 15 to 25 knots. waves building
to 3 to 6 feet occasionally to 8 feet. 
.friday...northwest winds 20 to 30 knots. waves building to 5 to
9 feet occasionally to 11 feet. 
.friday night...northwest winds 10 to 20 knots becoming west 5 to
15 knots after midnight. waves subsiding to calm to 2 feet. 
.saturday...southwest winds 10 to 20 knots backing south by mid
afternoon. a chance of showers by mid afternoon. waves calm to
2 feet. 
.saturday night...south winds 20 to 30 knots veering west after
midnight. showers likely through midnight, then a chance of
showers after midnight. waves building to 3 to 6 feet
occasionally to 8 feet. 
.sunday...northwest gales to 45 knots. waves building to 7 to
10 feet occasionally to 13 feet, then subsiding to 3 to 6 feet
occasionally to 8 feet. 
.monday...northwest winds 10 to 20 knots backing south. waves
subsiding to calm to 2 feet. 

$$

fzus63 kmqt 010201
glfls 
expires:202610010800;;330463

open lake forecast for lake superior
national weather service marquette mi
1001 pm edt wed sep 30 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...

29.8 inch troughing lingers over the lake through tomorrow morning 
between a 29.0 inch hudson bay low and another 29.7 inch low over 
the south plains. high pressure builds to 30.2 inches over the 
northern plains tomorrow night into friday before shifting east to 
the great lakes friday night and saturday. a weak 29.9 inch trough 
crosses lake superior saturday night and sunday with 30.3 inch high 
pressure quickly returning sunday night into monday. 




lsz267-010800-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
1001 pm edt wed sep 30 2026

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

$$

fzus63 kmqt 010201
glfls 
expires:202610010800;;330458

open lake forecast for lake superior
national weather service marquette mi
1001 pm edt wed sep 30 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...

29.8 inch troughing lingers over the lake through tomorrow morning 
between a 29.0 inch hudson bay low and another 29.7 inch low over 
the south plains. high pressure builds to 30.2 inches over the 
northern plains tomorrow night into friday before shifting east to 
the great lakes friday night and saturday. a weak 29.9 inch trough 
crosses lake superior saturday night and sunday with 30.3 inch high 
pressure quickly returning sunday night into monday. 




lsz162-010800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1001 pm edt wed sep 30 2026 /901 pm cdt wed sep 30 2026/

.rest of tonight...west winds 5 to 15 knots becoming northwest
10 to 20 knots late. waves calm to 2 feet. 
.thursday...northwest winds 10 to 20 knots backing west in the
afternoon, then increasing to 15 to 25 knots late. waves calm to
2 feet. 
.thursday night...northwest winds 15 to 25 knots. waves building
to 1 to 3 feet. 
.friday...northwest winds 10 to 20 knots becoming west 5 to
15 knots by mid afternoon. waves subsiding to calm to 2 feet. 
.friday night...west winds 5 to 15 knots backing southwest after
midnight. waves calm to 2 feet. 
.saturday...south winds 5 to 15 knots increasing to 10 to
20 knots by mid afternoon. a chance of showers. waves calm to
2 feet. 
.saturday night...southwest winds 15 to 25 knots veering west
after midnight. a chance of showers through midnight. waves
building to 1 to 3 feet. 
.sunday...northwest winds 15 to 25 knots diminishing to 10 to
20 knots. waves subsiding to calm to 2 feet. 
.monday...northwest winds 5 to 15 knots becoming south 10 to
20 knots. waves calm to 2 feet. 

$$

fzus63 kmqt 010201
glfls 
expires:202610010800;;330459

open lake forecast for lake superior
national weather service marquette mi
1001 pm edt wed sep 30 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...

29.8 inch troughing lingers over the lake through tomorrow morning 
between a 29.0 inch hudson bay low and another 29.7 inch low over 
the south plains. high pressure builds to 30.2 inches over the 
northern plains tomorrow night into friday before shifting east to 
the great lakes friday night and saturday. a weak 29.9 inch trough 
crosses lake superior saturday night and sunday with 30.3 inch high 
pressure quickly returning sunday night into monday. 




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 wed sep 30 2026

.rest of tonight...southwest winds 5 to 15 knots veering
northwest late. patchy fog. waves calm to 2 feet. 
.thursday...northwest winds 5 to 15 knots becoming west 10 to
20 knots in the afternoon, then increasing to 15 to 25 knots
late. waves building to 2 to 4 feet. 
.thursday night...northwest winds 15 to 25 knots diminishing to
10 to 20 knots after midnight. waves building to 3 to 5 feet
occasionally to 7 feet. 
.friday...northwest winds 10 to 20 knots backing west by mid
afternoon. waves subsiding to 1 to 3 feet. 
.friday night...west winds 5 to 15 knots backing southwest after
midnight. waves subsiding to calm to 2 feet. 
.saturday...south winds 10 to 20 knots increasing to 15 to
25 knots by mid afternoon. a chance of showers. waves building to
1 to 3 feet, then subsiding to calm to 2 feet. 
.saturday night...south winds 10 to 20 knots becoming west 15 to
25 knots after midnight. a chance of showers. waves building to
3 to 5 feet occasionally to 7 feet. 
.sunday...northwest winds 20 to 30 knots diminishing to 15 to
25 knots. waves building to 3 to 6 feet occasionally to 8 feet,
then subsiding to 1 to 3 feet. 
.monday...northwest winds 5 to 15 knots becoming south 10 to
20 knots. waves subsiding to calm to 2 feet, then building to
1 to 3 feet. 

$$

fzus63 kmqt 010201
glfls 
expires:202610010800;;330460

open lake forecast for lake superior
national weather service marquette mi
1001 pm edt wed sep 30 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...

29.8 inch troughing lingers over the lake through tomorrow morning 
between a 29.0 inch hudson bay low and another 29.7 inch low over 
the south plains. high pressure builds to 30.2 inches over the 
northern plains tomorrow night into friday before shifting east to 
the great lakes friday night and saturday. a weak 29.9 inch trough 
crosses lake superior saturday night and sunday with 30.3 inch high 
pressure quickly returning sunday night into monday. 




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 wed sep 30 2026

.rest of tonight...southwest winds 5 to 15 knots veering west
after midnight, then veering north late. patchy fog. waves calm
to 2 feet. 
.thursday...northwest winds 10 to 20 knots backing west in the
afternoon, then increasing to 15 to 25 knots late. waves building
to 2 to 4 feet. 
.thursday night...northwest winds 15 to 25 knots diminishing to
10 to 20 knots after midnight, then increasing to 15 to 25 knots
late. waves building to 3 to 5 feet occasionally to 7 feet. 
.friday...northwest winds 15 to 25 knots. waves building to 3 to
6 feet occasionally to 8 feet, then subsiding to 2 to 4 feet. 
.friday night...west winds 5 to 15 knots. waves subsiding to calm
to 2 feet. 
.saturday...southwest winds 5 to 15 knots backing south by mid
afternoon. a chance of showers by mid afternoon. waves calm to
2 feet. 
.saturday night...south winds 10 to 20 knots becoming west 15 to
25 knots after midnight. a chance of showers. waves building to
3 to 5 feet occasionally to 7 feet. 
.sunday...northwest gales to 40 knots diminishing to 15 to
25 knots. waves building to 5 to 8 feet occasionally to 10 feet,
then subsiding to 2 to 4 feet. 
.monday...northwest winds 5 to 15 knots becoming south 10 to
20 knots. waves subsiding to calm to 2 feet. 

$$

fzus63 kmqt 010201
glfls 
expires:202610010800;;330461

open lake forecast for lake superior
national weather service marquette mi
1001 pm edt wed sep 30 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...

29.8 inch troughing lingers over the lake through tomorrow morning 
between a 29.0 inch hudson bay low and another 29.7 inch low over 
the south plains. high pressure builds to 30.2 inches over the 
northern plains tomorrow night into friday before shifting east to 
the great lakes friday night and saturday. a weak 29.9 inch trough 
crosses lake superior saturday night and sunday with 30.3 inch high 
pressure quickly returning sunday night into monday. 




lsz265-010800-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
1001 pm edt wed sep 30 2026

.rest of tonight...south winds 10 to 20 knots veering west late.
waves calm to 2 feet. 
.thursday...northwest winds 15 to 25 knots increasing to 20 to
30 knots in the afternoon, then backing west late. waves building
to 2 to 4 feet, then subsiding to 1 to 3 feet. 
.thursday night...west winds 20 to 30 knots veering northwest
after midnight. waves building to 3 to 6 feet occasionally to
8 feet. 
.friday...northwest gales to 35 knots diminishing to 20 to
30 knots by mid afternoon. waves building to 5 to 8 feet
occasionally to 10 feet, then subsiding to 3 to 5 feet
occasionally to 7 feet. 
.friday night...west winds 10 to 20 knots backing southwest after
midnight. waves subsiding to calm to 2 feet. 
.saturday...southwest winds 10 to 20 knots becoming south 15 to
25 knots by mid afternoon. waves calm to 2 feet. 
.saturday night...south winds 15 to 25 knots becoming west gales
to 35 knots after midnight. a chance of showers. waves building
to 3 to 5 feet occasionally to 7 feet. 
.sunday...northwest gales to 45 knots diminishing to 20 to
30 knots. waves building to 6 to 9 feet occasionally to 11 feet,
then subsiding to 3 to 5 feet occasionally to 7 feet. 
.monday...northwest winds 10 to 20 knots backing south. waves
subsiding to calm to 2 feet. 

$$