fzus63 kdtx 181944
glflh 
expires:202610190400;;325647

open lake forecast for lake huron
national weather service detroit/pontiac mi
344 pm edt sun oct 18 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...a ridge of high pressure over the mid-atlantic
produces gusty southwesterly winds through the evening as deep
low pressure tracks across hudson bay. the high pressure then
drifts into the great lakes and stalls through the middle of the
week.


lhz361-190400-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
344 pm edt sun oct 18 2026

.tonight...southwest winds 10 to 15 knots increasing to 15 to
20 knots with gusts to around 30 knots by midnight...then
decreasing to 10 to 15 knots early in the morning. waves 2 to
4 feet. 
.monday...southwest winds 10 to 15 knots becoming west 5 to
10 knots in the late morning and afternoon. waves 1 to 3 feet. 
.monday night...light and variable winds becoming north 5 to
10 knots by midnight...then veering to the east after midnight.
waves 2 feet or less. 
.tuesday...east winds 10 to 15 knots. waves 1 to 3 feet. 
.tuesday night...southeast winds 5 to 10 knots. waves 2 feet or
less. 
.wednesday...south winds 5 to 10 knots in the morning becoming
light and variable. waves 2 feet or less. 
.thursday...light and variable winds becoming northeast 5 to
10 knots in the late morning and early afternoon...then becoming
light and variable early in the evening becoming east 5 to
10 knots by midnight. waves 2 feet or less. 
.friday...east winds 5 to 10 knots. waves 2 feet or less. 


$$

fzus63 kdtx 181944
glflh 
expires:202610190400;;325648

open lake forecast for lake huron
national weather service detroit/pontiac mi
344 pm edt sun oct 18 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...a ridge of high pressure over the mid-atlantic
produces gusty southwesterly winds through the evening as deep
low pressure tracks across hudson bay. the high pressure then
drifts into the great lakes and stalls through the middle of the
week.


lhz362-363-190400-
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-
344 pm edt sun oct 18 2026

.tonight...southwest winds 20 to 25 knots with gusts to 30 knots 
decreasing to 15 to 20 knots with gusts to around 25 knots after 
midnight. gusts to 35 knot gales possible. waves 6 to 9 feet. 
waves occasionally around 12 feet.
.monday...southwest winds 10 to 15 knots decreasing to 5 to
10 knots in the afternoon. waves 3 to 5 feet subsiding to 1 to
3 feet in the afternoon. 
.monday night...light and variable winds becoming northeast 5 to
10 knots after midnight. waves 2 feet or less. 
.tuesday...east winds 10 to 15 knots decreasing to 5 to 10 knots
in the late morning and afternoon. waves 1 to 3 feet. 
.tuesday night...northeast winds 5 to 10 knots veering to the
southeast after midnight. waves 2 feet or less. 
.wednesday...south winds 5 to 10 knots. waves 2 feet or less. 
.thursday...north winds 5 to 10 knots becoming northeast 10 to
15 knots by midnight. waves 2 feet or less. 
.friday...east winds 5 to 10 knots. waves 2 feet or less. 


$$

fzus63 kdtx 181944
glflh 
expires:202610190400;;325649

open lake forecast for lake huron
national weather service detroit/pontiac mi
344 pm edt sun oct 18 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...a ridge of high pressure over the mid-atlantic
produces gusty southwesterly winds through the evening as deep
low pressure tracks across hudson bay. the high pressure then
drifts into the great lakes and stalls through the middle of the
week.


lhz462>464-190400-
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-
344 pm edt sun oct 18 2026

.tonight...southwest winds 15 to 20 knots decreasing to 10 to
15 knots early in the morning. waves 3 to 5 feet. 
.monday...southwest winds 10 to 15 knots becoming light and
variable. waves 1 to 3 feet. 
.monday night...light and variable winds becoming northeast 5 to
10 knots after midnight. waves 2 feet or less. 
.tuesday...northeast winds 5 to 10 knots until late afternoon
becoming light and variable. waves 2 feet or less. 
.tuesday night...north winds 5 to 10 knots veering to the east by
midnight...then becoming southeast 10 to 15 knots after midnight.
waves 2 feet or less. 
.wednesday...southeast winds 5 to 10 knots becoming light and
variable...then becoming southwest 5 to 10 knots late in the
evening. waves 2 feet or less. 
.thursday...west winds 5 to 10 knots becoming 10 to 15 knots .
waves 2 feet or less. 
.friday...northeast winds 10 to 15 knots becoming east 5 to
10 knots until early evening...then increasing to 10 to 15 knots
by midnight. waves 1 to 3 feet. 


$$

fzus63 kmkx 181941
glflm 
expires:202610190315;;325545

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
241 pm cdt sun oct 18 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...

strong low pressure around 29.2 inches will move eastward into 
hudson bay today while deepening to around 29.0 inches. southwest 
gales are expected across the northern half of lake michigan now 
into tonight. a gale warning is in effect during this period. the 
southwest gales will diminish tonight ahead of an approaching high
pressure around 30.5 inches. light and variable winds will 
develop across lake michigan monday night through tuesday 
afternoon.


lmz261-362-364-563-190315-
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 rock island passage to sturgeon bay wi-
241 pm cdt sun oct 18 2026

sturgeon bay wi to point betsie mi north...

...gale warning in effect until 1 am cdt monday...

.tonight...southwest gales to 40 kt diminishing to 30 kt. waves
10 to 14 ft occasionally to 18 ft subsiding to 6 to 9 ft
occasionally to 12 ft. 
.monday...west winds 10 to 20 kt diminishing to 10 to 15 kt late
in the morning, then diminishing to 5 to 10 kt early in the
afternoon backing to southwest late. waves 4 to 7 ft occasionally
to 9 ft subsiding to 2 to 4 ft. 
.monday night...northeast winds 5 to 10 kt becoming east. waves
1 to 2 ft. 
.tuesday...southeast winds 10 to 15 kt. waves 1 to 2 ft. 
.tuesday night...southeast winds 10 to 15 kt becoming south.
waves 1 to 2 ft. 
.wednesday...southwest winds 10 to 20 kt. waves 1 to 2 ft. 
.wednesday night...southwest winds 10 to 15 kt veering to north.
waves 1 to 2 ft. 
.thursday...northeast winds 5 to 10 kt increasing to 10 to 15 kt.
waves 1 ft or less. 
.friday...southeast winds 10 to 15 kt. waves 1 to 2 ft.  

$$

fzus63 kmkx 181941
glflm 
expires:202610190315;;325546

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
241 pm cdt sun oct 18 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...

strong low pressure around 29.2 inches will move eastward into 
hudson bay today while deepening to around 29.0 inches. southwest 
gales are expected across the northern half of lake michigan now 
into tonight. a gale warning is in effect during this period. the 
southwest gales will diminish tonight ahead of an approaching high
pressure around 30.5 inches. light and variable winds will 
develop across lake michigan monday night through tuesday 
afternoon.


lmz366-565-567-868-190315-
lake michigan from point betsie to manistee mi 5 nm offshore to
mid lake-
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-
241 pm cdt sun oct 18 2026

sturgeon bay wi to point betsie mi south to sheboygan wi to
pentwater mi...

...gale warning in effect until 10 pm cdt this evening...

.tonight...southwest gales to 35 kt diminishing to 15 to 25 kt.
waves 8 to 12 ft occasionally to 16 ft subsiding to 6 to 9 ft
occasionally to 12 ft. 
.monday...southwest winds 10 to 20 kt becoming west 10 to 15 kt
late in the morning, then becoming southwest early in the
afternoon becoming south late. waves 4 to 6 ft occasionally to
8 ft subsiding to 1 to 3 ft. 
.monday night...south winds less than 10 kt becoming east. waves
1 to 2 ft. 
.tuesday...southeast winds 5 to 10 kt becoming south. waves 1 ft
or less. 
.tuesday night...south winds 5 to 10 kt. waves 1 ft or less.
.wednesday...southwest winds 10 to 15 kt becoming south. waves
1 to 2 ft. 
.wednesday night...southwest winds 5 to 10 kt veering to
northwest. waves 1 to 2 ft. 
.thursday...north winds 5 to 10 kt becoming northeast. waves 1 ft
or less. 
.friday...southeast winds 10 to 15 kt. waves 1 to 3 ft.  

$$

fzus63 kmkx 181941
glflm 
expires:202610190315;;325547

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
241 pm cdt sun oct 18 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...

strong low pressure around 29.2 inches will move eastward into 
hudson bay today while deepening to around 29.0 inches. southwest 
gales are expected across the northern half of lake michigan now 
into tonight. a gale warning is in effect during this period. the 
southwest gales will diminish tonight ahead of an approaching high
pressure around 30.5 inches. light and variable winds will 
develop across lake michigan monday night through tuesday 
afternoon.


lmz080-669-671-673-675-777-779-870-872-874-876-878-190315-
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-
241 pm cdt sun oct 18 2026

sheboygan wi to pentwater mi south...

.tonight...south winds to 30 kt becoming southwest 10 to 20 kt.
waves 7 to 10 ft occasionally to 13 ft subsiding to 4 to 6 ft
occasionally to 8 ft. 
.monday...southwest winds 10 to 20 kt diminishing to 10 to 15 kt
late in the morning, then diminishing to 5 to 10 kt early in the
afternoon becoming south late. waves 3 to 5 ft subsiding to 1 to
2 ft. 
.monday night...southeast winds 5 to 10 kt becoming east. waves
1 to 2 ft. 
.tuesday...east winds 5 to 10 kt. waves 1 ft or less. 
.tuesday night...east winds 5 to 10 kt becoming south. waves 1 to
2 ft. 
.wednesday...south winds 10 to 15 kt. waves 1 to 2 ft. 
.wednesday night...south winds 5 to 10 kt becoming west. waves
1 to 2 ft. 
.thursday...north winds 5 to 10 kt. waves 1 ft or less. 
.friday...southeast winds 10 to 20 kt. waves 2 to 4 ft.  

$$

fzus63 kmqt 182001
glfls 
expires:202610190800;;326033

open lake forecast for lake superior
national weather service marquette mi
401 pm edt sun oct 18 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...


a 29.1 inch low over northern ontario will track east over the 
hudson bay tonight and a 30.3 inch high will build over lake 
superior through monday afternoon. high pressure will slowly shift 
east and gradually strengthens to 30.5 inches over quebec through 
tuesday night. ridging then weakens to 30.1 inches over the lake on 
wednesday as a 29.7 inch trough crosses hudson bay. high pressure 
will build back over the lake wednesday night into thursday, 
reaching 30.3 inches.




lsz162-190800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
401 pm edt sun oct 18 2026 /301 pm cdt sun oct 18 2026/

.late this afternoon...southwest winds 20 to 30 knots. waves 7 to
10 feet occasionally to 13 feet subsiding to 5 to 8 feet
occasionally to 10 feet. 
.tonight...southwest winds 15 to 25 knots becoming west 5 to
15 knots after midnight, then veering northwest late. waves
subsiding to calm to 2 feet. 
.monday...north winds 5 to 15 knots veering northeast in the
afternoon. waves calm to 2 feet. 
.monday night...east winds 5 to 15 knots. waves calm to 2 feet. 
.tuesday...southeast winds 5 to 15 knots backing east by mid
afternoon. waves calm to 2 feet. 
.tuesday night...east winds 5 to 15 knots veering southwest after
midnight. waves calm to 2 feet. 
.wednesday...southwest winds 5 to 15 knots. waves calm to 2 feet.
.wednesday night...northeast winds 5 to 15 knots. waves calm to
2 feet. 
.thursday...east winds 10 to 20 knots diminishing to 5 to
15 knots. waves calm to 2 feet. 
.friday...east winds 5 to 15 knots becoming south 15 to 25 knots.
waves building to 2 to 4 feet. 

$$

fzus63 kmqt 182001
glfls 
expires:202610190800;;326034

open lake forecast for lake superior
national weather service marquette mi
401 pm edt sun oct 18 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...


a 29.1 inch low over northern ontario will track east over the 
hudson bay tonight and a 30.3 inch high will build over lake 
superior through monday afternoon. high pressure will slowly shift 
east and gradually strengthens to 30.5 inches over quebec through 
tuesday night. ridging then weakens to 30.1 inches over the lake on 
wednesday as a 29.7 inch trough crosses hudson bay. high pressure 
will build back over the lake wednesday night into thursday, 
reaching 30.3 inches.




lsz263-190800-
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 sun oct 18 2026

...gale warning in effect until 5 pm edt this afternoon...

.late this afternoon...southwest winds to 30 knots with a few
gale force gusts to 35 knots possible. waves 8 to 11 feet
occasionally to 14 feet subsiding to 7 to 10 feet occasionally to
13 feet. 
.tonight...southwest winds 20 to 30 knots becoming west 10 to
20 knots after midnight, then becoming northwest 5 to 15 knots
late. waves subsiding to calm to 2 feet. 
.monday...north winds less than 10 knots becoming northeast 5 to
15 knots in the afternoon. waves calm to 2 feet. 
.monday night...east winds 5 to 15 knots veering southeast late.
waves calm to 2 feet. 
.tuesday...southeast winds 5 to 15 knots backing east by mid
afternoon. waves calm to 2 feet. 
.tuesday night...south winds 10 to 20 knots veering southwest
after midnight. waves building to 1 to 3 feet. 
.wednesday...southwest winds 5 to 15 knots veering west by mid
afternoon. waves subsiding to calm to 2 feet. 
.wednesday night...northeast winds 5 to 15 knots. waves calm to
2 feet. 
.thursday...east winds 5 to 15 knots veering southeast. waves
calm to 2 feet. 
.friday...southeast winds 5 to 15 knots becoming south 15 to
25 knots. waves building to 2 to 4 feet. 

$$

fzus63 kmqt 182001
glfls 
expires:202610190800;;326035

open lake forecast for lake superior
national weather service marquette mi
401 pm edt sun oct 18 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...


a 29.1 inch low over northern ontario will track east over the 
hudson bay tonight and a 30.3 inch high will build over lake 
superior through monday afternoon. high pressure will slowly shift 
east and gradually strengthens to 30.5 inches over quebec through 
tuesday night. ridging then weakens to 30.1 inches over the lake on 
wednesday as a 29.7 inch trough crosses hudson bay. high pressure 
will build back over the lake wednesday night into thursday, 
reaching 30.3 inches.




lsz264-190800-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
401 pm edt sun oct 18 2026

...gale warning in effect until 5 pm edt this afternoon...

.late this afternoon...southwest winds to 30 knots with a few
gale force gusts to 35 knots possible. waves 9 to 12 feet
occasionally to 15 feet subsiding to 7 to 10 feet occasionally to
13 feet. 
.tonight...west winds 20 to 30 knots diminishing to 15 to
25 knots after midnight, then becoming northwest 5 to 15 knots
late. waves subsiding to 1 to 3 feet. 
.monday...northwest winds 5 to 15 knots becoming north less than
10 knots in the afternoon, then increasing to 5 to 15 knots late.
waves subsiding to calm to 2 feet. 
.monday night...east winds less than 10 knots becoming southeast
5 to 15 knots late. waves calm to 2 feet. 
.tuesday...southeast winds 5 to 15 knots. waves calm to 2 feet. 
.tuesday night...south winds 10 to 20 knots veering southwest
after midnight. waves building to 1 to 3 feet. 
.wednesday...southwest winds 10 to 20 knots becoming west 5 to
15 knots by mid afternoon. waves subsiding to calm to 2 feet. 
.wednesday night...north winds 5 to 15 knots veering northeast
after midnight. waves calm to 2 feet. 
.thursday...east winds 5 to 15 knots veering southeast. waves
calm to 2 feet. 
.friday...southeast winds 10 to 20 knots becoming south 15 to
25 knots. waves building to 2 to 4 feet. 

$$

fzus63 kmqt 182001
glfls 
expires:202610190800;;326036

open lake forecast for lake superior
national weather service marquette mi
401 pm edt sun oct 18 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...


a 29.1 inch low over northern ontario will track east over the 
hudson bay tonight and a 30.3 inch high will build over lake 
superior through monday afternoon. high pressure will slowly shift 
east and gradually strengthens to 30.5 inches over quebec through 
tuesday night. ridging then weakens to 30.1 inches over the lake on 
wednesday as a 29.7 inch trough crosses hudson bay. high pressure 
will build back over the lake wednesday night into thursday, 
reaching 30.3 inches.




lsz265-190800-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
401 pm edt sun oct 18 2026

.late this afternoon...southwest winds 15 to 25 knots. waves 2 to
4 feet subsiding to 1 to 3 feet. 
.tonight...southwest winds 15 to 25 knots veering west after
midnight, then diminishing to 5 to 15 knots late. waves building
to 2 to 4 feet, then subsiding to calm to 2 feet. 
.monday...northwest winds 5 to 15 knots veering northeast late.
waves calm to 2 feet. 
.monday night...east winds 5 to 15 knots veering southeast late.
waves calm to 2 feet. 
.tuesday...southeast winds 5 to 15 knots increasing to 10 to
20 knots by mid afternoon. waves calm to 2 feet. 
.tuesday night...south winds 10 to 20 knots veering southwest
after midnight. waves calm to 2 feet. 
.wednesday...southwest winds 10 to 20 knots becoming west 5 to
15 knots by mid afternoon. waves calm to 2 feet. 
.wednesday night...north winds 5 to 15 knots veering northeast
after midnight. waves calm to 2 feet. 
.thursday...east winds 5 to 15 knots becoming southeast 10 to
20 knots. waves calm to 2 feet. 
.friday...southeast winds 15 to 25 knots veering south. waves
building to 2 to 4 feet. 

$$

fzus63 kmqt 182001
glfls 
expires:202610190800;;326037

open lake forecast for lake superior
national weather service marquette mi
401 pm edt sun oct 18 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...


a 29.1 inch low over northern ontario will track east over the 
hudson bay tonight and a 30.3 inch high will build over lake 
superior through monday afternoon. high pressure will slowly shift 
east and gradually strengthens to 30.5 inches over quebec through 
tuesday night. ridging then weakens to 30.1 inches over the lake on 
wednesday as a 29.7 inch trough crosses hudson bay. high pressure 
will build back over the lake wednesday night into thursday, 
reaching 30.3 inches.




lsz266-190800-
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 sun oct 18 2026

.late this afternoon...southwest winds 20 to 30 knots. waves 8 to
11 feet occasionally to 14 feet subsiding to 7 to 10 feet
occasionally to 13 feet. 
.tonight...southwest winds 20 to 30 knots diminishing to 15 to
25 knots after midnight, then becoming west 10 to 20 knots late.
waves subsiding to 2 to 4 feet. 
.monday...northwest winds 10 to 20 knots becoming north 5 to
15 knots in the afternoon. waves subsiding to calm to 2 feet. 
.monday night...northeast winds 5 to 15 knots veering east after
midnight. waves calm to 2 feet. 
.tuesday...southeast winds 5 to 15 knots increasing to 10 to
20 knots by mid afternoon. waves calm to 2 feet. 
.tuesday night...south winds 15 to 25 knots. waves building to
1 to 3 feet. 
.wednesday...southwest winds 10 to 20 knots diminishing to 5 to
15 knots by mid afternoon. waves subsiding to calm to 2 feet. 
.wednesday night...north winds 5 to 15 knots veering northeast
after midnight. waves calm to 2 feet. 
.thursday...northeast winds 5 to 15 knots veering southeast.
waves calm to 2 feet. 
.friday...south winds 15 to 25 knots increasing to 20 to
30 knots. waves building to 2 to 4 feet. 

$$

fzus63 kmqt 182001
glfls 
expires:202610190800;;326038

open lake forecast for lake superior
national weather service marquette mi
401 pm edt sun oct 18 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...


a 29.1 inch low over northern ontario will track east over the 
hudson bay tonight and a 30.3 inch high will build over lake 
superior through monday afternoon. high pressure will slowly shift 
east and gradually strengthens to 30.5 inches over quebec through 
tuesday night. ridging then weakens to 30.1 inches over the lake on 
wednesday as a 29.7 inch trough crosses hudson bay. high pressure 
will build back over the lake wednesday night into thursday, 
reaching 30.3 inches.




lsz267-190800-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
401 pm edt sun oct 18 2026

.late this afternoon...southwest winds 20 to 30 knots. waves 4 to
7 feet occasionally to 9 feet subsiding to 3 to 6 feet
occasionally to 8 feet. 
.tonight...southwest winds 20 to 30 knots becoming west 10 to
20 knots late. waves subsiding to 2 to 4 feet. 
.monday...northwest winds 10 to 20 knots becoming north 5 to
15 knots in the afternoon. waves subsiding to calm to 2 feet. 
.monday night...north winds 5 to 15 knots veering east after
midnight, then increasing to 10 to 20 knots late. waves calm to
2 feet. 
.tuesday...southeast winds 10 to 20 knots. waves calm to 2 feet. 
.tuesday night...south winds 15 to 25 knots. waves calm to
2 feet. 
.wednesday...southwest winds 10 to 20 knots diminishing to 5 to
15 knots by mid afternoon. waves calm to 2 feet. 
.wednesday night...north winds 5 to 15 knots veering northeast
after midnight. waves calm to 2 feet. 
.thursday...northeast winds 5 to 15 knots veering southeast.
waves calm to 2 feet. 
.friday...southeast winds 10 to 20 knots becoming south 15 to
25 knots. waves building to 2 to 4 feet. 

$$