fzus63 kdtx 221941
glflh 
expires:202510230345;;581674

open lake forecast for lake huron
national weather service detroit/pontiac mi
341 pm edt wed oct 22 2025

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, 29.50 inches, moves into southern quebec
this evening. a weak cold front then drops across lake huron 
tonight, reinforcing northwest flow across the open waters. 
widespread showers and gusty conditions expected again on thursday
before high pressure. 30.20 inches, expands into the great lakes 
friday and saturday.


lhz361-362-230345-
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-
341 pm edt wed oct 22 2025

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


$$

fzus63 kdtx 221941
glflh 
expires:202510230345;;581675

open lake forecast for lake huron
national weather service detroit/pontiac mi
341 pm edt wed oct 22 2025

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, 29.50 inches, moves into southern quebec
this evening. a weak cold front then drops across lake huron 
tonight, reinforcing northwest flow across the open waters. 
widespread showers and gusty conditions expected again on thursday
before high pressure. 30.20 inches, expands into the great lakes 
friday and saturday.


lhz363-462>464-230345-
lake huron from sturgeon point to alabaster mi beyond 5nm off
shore-
lake huron from port austin to harbor beach beyond 5nm off shore-
lake huron from harbor beach to port sanilac beyond 5nm off shore-
lake huron from port sanilac to port huron beyond 5nm off shore-
341 pm edt wed oct 22 2025

.tonight...west winds 15 to 20 knots. scattered showers. a chance
of waterspouts after midnight. waves 4 to 6 feet. 
.thursday...west winds 15 to 20 knots becoming northwest 20 to
25 knots late in the morning...then decreasing to 15 to 20 knots
in the afternoon. scattered showers. a chance of waterspouts.
waves 6 to 9 feet. waves occasionally around 12 feet. 
.thursday night...west winds 15 to 20 knots increasing to 20 to
25 knots after midnight. showers in the evening...then showers
likely after midnight. waves 6 to 9 feet. waves occasionally
around 12 feet. 
.friday...northwest winds 15 to 20 knots decreasing to 10 to
15 knots early in the afternoon. a chance of showers. waves 4 to
6 feet. 
.friday night...northwest winds 10 to 15 knots becoming west 5 to
10 knots after midnight. a chance of showers. waves 2 to 4 feet
subsiding to 1 to 3 feet after midnight. waves occasionally
around 8 feet. 
.saturday...northwest winds 5 to 10 knots becoming light and
variable. waves 2 feet or less. 
.sunday...southeast winds 5 to 10 knots becoming east 10 to
15 knots in the late evening and early morning. waves 2 feet or
less. 
.monday...east winds 10 to 15 knots increasing to 15 to 20 knots
until early morning. waves 2 to 4 feet building to 4 to 6 feet.
waves occasionally around 8 feet. 


$$

fzus63 kmkx 221921
glflm 
expires:202510230315;;581168

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
221 pm cdt wed oct 22 2025

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...

29.5 inch low pressure is centered along the ontario-quebec 
border this afternoon, supporting continued gusty northwest winds
across the open waters. gales will continue across southern lake 
michigan through the rest of this afternoon, with a gale warning 
in effect until 7 pm cdt. extensions to the warning are not 
anticipated at this time, through trends will continue to be 
monitored. northwest winds will weaken slightly but remain breezy 
tonight through thursday as 30.2 inch high pressure builds into 
the upper mississippi river valley. the high will cross lake 
michigan thursday night through friday, allowing winds to become 
light and variable friday evening. winds will turn southerly on 
saturday as the high moves into ontario. the high will linger over
quebec sunday into tuesday as broad 29.9 inch low pressure moves 
into the northern great plains, resulting in breezy southeast 
winds across the waters. said winds could become gusty at points monday 
night through wednesday, with trends being monitored for possible 
gales in coming forecasts.

areas of showers and isolated thunderstorms will continue into 
thursday evening across the open waters as low pressure departs to 
the east. isolated waterspouts are possible in this activity, 
particularly over the eastern half of the lake. rain chances return 
ahead of low pressure in the northern great plains early next week.


lmz261-362-364-366-563-565-230315-
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-
221 pm cdt wed oct 22 2025

two rivers wi to manistee mi north...

.tonight...northwest winds to 30 kt diminishing to 15 to 25 kt.
slight chance of waterspouts. rain showers likely with slight
chance of thunderstorms this evening, then chance of rain showers
overnight. waves 5 to 8 ft occasionally to 10 ft subsiding to
4 to 7 ft occasionally to 9 ft. 
.thursday...northwest winds 15 to 25 kt increasing to 30 kt.
slight chance of waterspouts in the morning. chance of rain
showers. waves 4 to 6 ft occasionally to 8 ft subsiding to 3 to
5 ft. 
.thursday night...northwest winds to 30 kt diminishing to 10 to
20 kt. chance of rain showers. waves 3 to 5 ft subsiding to 2 to
4 ft. 
.friday...northwest winds 10 to 20 kt. chance of rain showers.
waves 2 to 4 ft. 
.friday night...northwest winds 10 to 15 kt becoming southwest
5 to 10 kt. waves 1 to 2 ft. 
.saturday...southwest winds 10 to 15 kt becoming south. waves
1 to 2 ft building to 1 to 3 ft. 
.saturday night...south winds 10 to 15 kt. waves 2 to 4 ft. 
.sunday...south winds 10 to 20 kt. waves 3 to 5 ft. 
.monday...southeast winds 10 to 20 kt increasing to 15 to 25 kt.
waves 4 to 7 ft occasionally to 9 ft.  

$$

fzus63 kmkx 221921
glflm 
expires:202510230315;;581169

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
221 pm cdt wed oct 22 2025

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...

29.5 inch low pressure is centered along the ontario-quebec 
border this afternoon, supporting continued gusty northwest winds
across the open waters. gales will continue across southern lake 
michigan through the rest of this afternoon, with a gale warning 
in effect until 7 pm cdt. extensions to the warning are not 
anticipated at this time, through trends will continue to be 
monitored. northwest winds will weaken slightly but remain breezy 
tonight through thursday as 30.2 inch high pressure builds into 
the upper mississippi river valley. the high will cross lake 
michigan thursday night through friday, allowing winds to become 
light and variable friday evening. winds will turn southerly on 
saturday as the high moves into ontario. the high will linger over
quebec sunday into tuesday as broad 29.9 inch low pressure moves 
into the northern great plains, resulting in breezy southeast 
winds across the waters. said winds could become gusty at points monday 
night through wednesday, with trends being monitored for possible 
gales in coming forecasts.

areas of showers and isolated thunderstorms will continue into 
thursday evening across the open waters as low pressure departs to 
the east. isolated waterspouts are possible in this activity, 
particularly over the eastern half of the lake. rain chances return 
ahead of low pressure in the northern great plains early next week.


lmz080-567-669-671-673-675-777-779-868-870-872-874-876-878-230315-
lake michigan from michigan city in to st. joseph mi 5 nm
offshore to mid lake-
lake michigan from two rivers to sheboygan wi 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 pentwater to manistee mi 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-
221 pm cdt wed oct 22 2025

two rivers wi to manistee mi south...

...gale warning in effect until 7 pm cdt this evening...

.tonight...northwest winds to 30 kt diminishing to 15 to 25 kt.
slight chance of waterspouts. chance of rain showers, slight
chance of thunderstorms and drizzle this evening, then chance of
rain showers overnight. waves 10 to 14 ft occasionally to 18 ft
subsiding to 7 to 10 ft occasionally to 13 ft. 
.thursday...northwest winds to 30 kt diminishing to 15 to 25 kt.
chance of rain showers. waves 7 to 10 ft occasionally to 13 ft. 
.thursday night...northwest winds 15 to 25 kt diminishing to
10 to 20 kt. chance of rain showers in the evening. waves 5 to
8 ft occasionally to 10 ft subsiding to 4 to 6 ft occasionally to
8 ft. 
.friday...northwest winds 10 to 20 kt diminishing to 10 to 15 kt.
waves 3 to 5 ft subsiding to 2 to 4 ft. 
.friday night...west winds 5 to 10 kt backing to south. waves
1 to 3 ft subsiding to 1 to 2 ft. 
.saturday...south winds 10 to 15 kt. waves 1 to 2 ft building to
2 to 4 ft. 
.saturday night...southeast winds 10 to 20 kt. waves 3 to 5 ft. 
.sunday...southeast winds 10 to 20 kt. waves 4 to 6 ft
occasionally to 8 ft. 
.monday...southeast winds 15 to 25 kt increasing to 30 kt. waves
6 to 9 ft occasionally to 12 ft.  

$$

fzus63 kmqt 222001
glfls 
expires:202510230800;;582300

open lake forecast for lake superior
national weather service marquette mi
401 pm edt wed oct 22 2025

for waters beyond 5 nautical miles of shore on lake superior.

waves are the significant wave height - the average of the
highest 1/3 of the wave spectrum. occasional wave height is the
average of the highest 1/10 of the wave spectrum.

.synopsis...

30.1 inch ridging gradually builds into the great lakes, reducing 
troughing over the lake thursday night. by friday, 30.2 inch ridging 
will span most of the upper great lakes as a 30.3 inch high slides 
southeast through wisconsin. by saturday, this high builds to 30.4 
inches over northeastern ontario then to 30.5 inches late sunday 
over northern quebec. this high remains tuesday while a 30.1 inch 
trough begins organizing in the northern plains.



lsz162-230800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
401 pm edt wed oct 22 2025 /301 pm cdt wed oct 22 2025/

.late this afternoon...northwest winds 15 to 25 knots. a slight
chance of waterspouts. scattered showers. waves 2 to 4 feet. 
.tonight...northwest winds 15 to 25 knots. a slight chance of
waterspouts through midnight. isolated rain showers through
midnight. waves 2 to 4 feet. 
.thursday...northwest winds 15 to 25 knots diminishing to 10 to
20 knots late. waves subsiding to 1 to 3 feet, then building to
2 to 4 feet. 
.thursday night...northwest winds 5 to 15 knots veering north
after midnight, then backing northwest late. waves subsiding to
calm to 2 feet. 
.friday...northwest winds 5 to 15 knots backing southwest by mid
afternoon. waves calm to 2 feet. 
.friday night...south winds 5 to 15 knots. waves calm to 2 feet. 
.saturday...south winds 10 to 20 knots. waves calm to 2 feet. 
.saturday night...south winds 10 to 20 knots. waves calm to
2 feet. 
.sunday...south winds 10 to 20 knots backing southeast. waves
building to 1 to 3 feet. 
.monday...southeast winds 10 to 20 knots increasing to 15 to
25 knots. a chance of showers. waves building to 3 to 5 feet
occasionally to 7 feet. 

$$

fzus63 kmqt 222001
glfls 
expires:202510230800;;582301

open lake forecast for lake superior
national weather service marquette mi
401 pm edt wed oct 22 2025

for waters beyond 5 nautical miles of shore on lake superior.

waves are the significant wave height - the average of the
highest 1/3 of the wave spectrum. occasional wave height is the
average of the highest 1/10 of the wave spectrum.

.synopsis...

30.1 inch ridging gradually builds into the great lakes, reducing 
troughing over the lake thursday night. by friday, 30.2 inch ridging 
will span most of the upper great lakes as a 30.3 inch high slides 
southeast through wisconsin. by saturday, this high builds to 30.4 
inches over northeastern ontario then to 30.5 inches late sunday 
over northern quebec. this high remains tuesday while a 30.1 inch 
trough begins organizing in the northern plains.



lsz263-230800-
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 wed oct 22 2025

.late this afternoon...north winds 10 to 20 knots. a slight
chance of waterspouts. scattered showers. waves 3 to 6 feet
occasionally to 8 feet. 
.tonight...north winds 10 to 20 knots becoming northwest 15 to
25 knots late. a slight chance of waterspouts. scattered rain
showers. waves subsiding to 3 to 5 feet occasionally to 7 feet. 
.thursday...northwest winds 15 to 25 knots diminishing to 10 to
20 knots in the afternoon. isolated rain showers. waves subsiding
to 2 to 4 feet. 
.thursday night...north winds 15 to 25 knots diminishing to 10 to
20 knots after midnight, then becoming northwest 5 to 15 knots
late. waves subsiding to calm to 2 feet. 
.friday...northwest winds 5 to 15 knots backing west by mid
afternoon. waves calm to 2 feet. 
.friday night...south winds less than 10 knots increasing to 5 to
15 knots after midnight. waves calm to 2 feet. 
.saturday...south winds 5 to 15 knots increasing to 10 to
20 knots by mid afternoon. waves calm to 2 feet. 
.saturday night...south winds 10 to 20 knots. waves building to
1 to 3 feet. 
.sunday...south winds 5 to 15 knots increasing to 10 to 20 knots.
waves subsiding to calm to 2 feet, then building to 1 to 3 feet. 
.monday...southeast winds 15 to 25 knots increasing to 20 to
30 knots. a chance of showers. waves building to 4 to 7 feet
occasionally to 9 feet. 

$$

fzus63 kmqt 222001
glfls 
expires:202510230800;;582302

open lake forecast for lake superior
national weather service marquette mi
401 pm edt wed oct 22 2025

for waters beyond 5 nautical miles of shore on lake superior.

waves are the significant wave height - the average of the
highest 1/3 of the wave spectrum. occasional wave height is the
average of the highest 1/10 of the wave spectrum.

.synopsis...

30.1 inch ridging gradually builds into the great lakes, reducing 
troughing over the lake thursday night. by friday, 30.2 inch ridging 
will span most of the upper great lakes as a 30.3 inch high slides 
southeast through wisconsin. by saturday, this high builds to 30.4 
inches over northeastern ontario then to 30.5 inches late sunday 
over northern quebec. this high remains tuesday while a 30.1 inch 
trough begins organizing in the northern plains.



lsz264-230800-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
401 pm edt wed oct 22 2025

.late this afternoon...north winds 15 to 25 knots. a slight
chance of waterspouts. scattered showers. waves 3 to 6 feet
occasionally to 8 feet. 
.tonight...north winds 15 to 25 knots diminishing to 10 to
20 knots after midnight, then becoming northwest 15 to 25 knots
late. a slight chance of waterspouts. scattered rain showers.
waves building to 4 to 7 feet occasionally to 9 feet, then
subsiding to 3 to 6 feet occasionally to 8 feet. 
.thursday...northwest winds 15 to 25 knots. isolated rain
showers. waves building to 4 to 7 feet occasionally to 9 feet. 
.thursday night...north winds 15 to 25 knots diminishing to 10 to
20 knots after midnight, then backing northwest late. isolated
rain showers through midnight. waves subsiding to 2 to 4 feet. 
.friday...northwest winds 5 to 15 knots backing west by mid
afternoon. waves subsiding to calm to 2 feet. 
.friday night...southwest winds less than 10 knots becoming south
5 to 15 knots after midnight. waves calm to 2 feet. 
.saturday...south winds 5 to 15 knots. waves calm to 2 feet. 
.saturday night...south winds 10 to 20 knots. waves calm to
2 feet. 
.sunday...south winds 10 to 20 knots. waves building to 2 to
4 feet. 
.monday...southeast winds 20 to 30 knots. a chance of showers.
waves building to 5 to 8 feet occasionally to 10 feet. 

$$

fzus63 kmqt 222001
glfls 
expires:202510230800;;582303

open lake forecast for lake superior
national weather service marquette mi
401 pm edt wed oct 22 2025

for waters beyond 5 nautical miles of shore on lake superior.

waves are the significant wave height - the average of the
highest 1/3 of the wave spectrum. occasional wave height is the
average of the highest 1/10 of the wave spectrum.

.synopsis...

30.1 inch ridging gradually builds into the great lakes, reducing 
troughing over the lake thursday night. by friday, 30.2 inch ridging 
will span most of the upper great lakes as a 30.3 inch high slides 
southeast through wisconsin. by saturday, this high builds to 30.4 
inches over northeastern ontario then to 30.5 inches late sunday 
over northern quebec. this high remains tuesday while a 30.1 inch 
trough begins organizing in the northern plains.



lsz265-230800-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
401 pm edt wed oct 22 2025

.late this afternoon...north winds 20 to 30 knots. a slight
chance of waterspouts. numerous showers. waves 5 to 8 feet
occasionally to 10 feet. 
.tonight...north winds 20 to 30 knots diminishing to 15 to
25 knots after midnight, then becoming northwest 20 to 30 knots
late. a slight chance of waterspouts. numerous showers. waves
subsiding to 3 to 6 feet occasionally to 8 feet. 
.thursday...northwest winds 20 to 30 knots. a slight chance of
waterspouts. scattered showers. waves building to 4 to 7 feet
occasionally to 9 feet, then subsiding to 3 to 6 feet
occasionally to 8 feet. 
.thursday night...northwest winds 20 to 30 knots diminishing to
15 to 25 knots after midnight. a slight chance of waterspouts
through midnight. scattered rain showers. waves subsiding to 2 to
4 feet. 
.friday...northwest winds 10 to 20 knots. isolated rain showers.
waves subsiding to calm to 2 feet. 
.friday night...west winds 5 to 15 knots backing south after
midnight. waves calm to 2 feet. 
.saturday...south winds 10 to 20 knots. waves calm to 2 feet. 
.saturday night...south winds 10 to 20 knots. waves calm to
2 feet. 
.sunday...south winds 10 to 20 knots increasing to 15 to
25 knots. waves calm to 2 feet. 
.monday...southeast winds 15 to 25 knots increasing to 20 to
30 knots. a chance of showers. waves building to 3 to 6 feet
occasionally to 8 feet. 

$$

fzus63 kmqt 222001
glfls 
expires:202510230800;;582304

open lake forecast for lake superior
national weather service marquette mi
401 pm edt wed oct 22 2025

for waters beyond 5 nautical miles of shore on lake superior.

waves are the significant wave height - the average of the
highest 1/3 of the wave spectrum. occasional wave height is the
average of the highest 1/10 of the wave spectrum.

.synopsis...

30.1 inch ridging gradually builds into the great lakes, reducing 
troughing over the lake thursday night. by friday, 30.2 inch ridging 
will span most of the upper great lakes as a 30.3 inch high slides 
southeast through wisconsin. by saturday, this high builds to 30.4 
inches over northeastern ontario then to 30.5 inches late sunday 
over northern quebec. this high remains tuesday while a 30.1 inch 
trough begins organizing in the northern plains.



lsz266-230800-
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 wed oct 22 2025

.late this afternoon...north winds 20 to 30 knots. a slight
chance of waterspouts. scattered showers. waves 5 to 8 feet
occasionally to 10 feet. 
.tonight...north winds 20 to 30 knots diminishing to 15 to
25 knots after midnight, then increasing to 20 to 30 knots late.
a slight chance of waterspouts. scattered rain showers. waves
subsiding to 4 to 7 feet occasionally to 9 feet. 
.thursday...northwest winds 20 to 30 knots. a slight chance of
waterspouts. scattered rain showers. waves building to 6 to
9 feet occasionally to 11 feet. 
.thursday night...north winds 20 to 30 knots diminishing to 15 to
25 knots after midnight. a slight chance of waterspouts through
midnight. rain showers through midnight, then scattered rain
showers after midnight. waves subsiding to 3 to 5 feet
occasionally to 7 feet. 
.friday...north winds 10 to 20 knots becoming northwest 5 to
15 knots by mid afternoon. scattered rain showers. waves
subsiding to 1 to 3 feet. 
.friday night...northwest winds 5 to 15 knots backing south after
midnight. waves subsiding to calm to 2 feet. 
.saturday...south winds 10 to 20 knots. waves calm to 2 feet. 
.saturday night...south winds 15 to 25 knots diminishing to 10 to
20 knots after midnight. waves building to 1 to 3 feet. 
.sunday...south winds 10 to 20 knots increasing to 15 to
25 knots. waves building to 2 to 4 feet. 
.monday...southeast winds 20 to 30 knots. a chance of showers.
waves building to 5 to 8 feet occasionally to 10 feet. 

$$

fzus63 kmqt 222001
glfls 
expires:202510230800;;582305

open lake forecast for lake superior
national weather service marquette mi
401 pm edt wed oct 22 2025

for waters beyond 5 nautical miles of shore on lake superior.

waves are the significant wave height - the average of the
highest 1/3 of the wave spectrum. occasional wave height is the
average of the highest 1/10 of the wave spectrum.

.synopsis...

30.1 inch ridging gradually builds into the great lakes, reducing 
troughing over the lake thursday night. by friday, 30.2 inch ridging 
will span most of the upper great lakes as a 30.3 inch high slides 
southeast through wisconsin. by saturday, this high builds to 30.4 
inches over northeastern ontario then to 30.5 inches late sunday 
over northern quebec. this high remains tuesday while a 30.1 inch 
trough begins organizing in the northern plains.



lsz267-230800-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
401 pm edt wed oct 22 2025

.late this afternoon...north winds 15 to 25 knots. a slight
chance of waterspouts. scattered showers. waves 2 to 4 feet
building to 3 to 6 feet occasionally to 8 feet. 
.tonight...north winds 15 to 25 knots. a slight chance of
waterspouts. scattered rain showers. waves subsiding to 3 to
6 feet occasionally to 8 feet. 
.thursday...northwest winds 15 to 25 knots increasing to 20 to
30 knots in the afternoon. a slight chance of waterspouts.
scattered rain showers. waves building to 6 to 9 feet
occasionally to 11 feet. 
.thursday night...north winds 20 to 30 knots diminishing to 15 to
25 knots after midnight. a slight chance of waterspouts through
midnight. rain showers through midnight, then scattered rain
showers after midnight. waves subsiding to 3 to 5 feet
occasionally to 7 feet. 
.friday...north winds 10 to 20 knots backing northwest by mid
afternoon. scattered rain showers. waves subsiding to 1 to
3 feet. 
.friday night...northwest winds 5 to 15 knots backing west after
midnight. waves subsiding to calm to 2 feet. 
.saturday...south winds 5 to 15 knots increasing to 10 to
20 knots by mid afternoon. waves calm to 2 feet. 
.saturday night...south winds 10 to 20 knots. waves calm to
2 feet. 
.sunday...south winds 10 to 20 knots becoming southeast 15 to
25 knots. waves building to 1 to 3 feet. 
.monday...southeast winds 15 to 25 knots increasing to 20 to
30 knots. a chance of showers. waves building to 3 to 6 feet
occasionally to 8 feet. 

$$