fzus63 kdtx 202000
glflh 
expires:202505210400;;861743

open lake forecast for lake huron
national weather service detroit/pontiac mi
400 pm edt tue may 20 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...a low pressure system centered over missouri will
translate and broaden eastward tonight, reaching the northern
ohio valley by wednesday. this brings periods of rain and an
uptick in winds/waves for the central great lakes tonight and
wednesday. showery and breezy conditions persist through the end
of the workweek as the system slowly progresses across the
eastern great lakes.


lhz361-210400-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
400 pm edt tue may 20 2025

.tonight...east winds 5 to 10 knots increasing to 15 to 20 knots.
waves 2 to 4 feet subsiding to 1 to 3 feet late in the evening...
then building to 3 to 5 feet after midnight. 
.wednesday...east winds 15 to 20 knots decreasing to 5 to
10 knots. waves 3 to 5 feet subsiding to 1 to 3 feet late in the
afternoon. 
.wednesday night...northeast winds 5 to 10 knots increasing to
10 to 15 knots in the late evening and overnight. a chance of
showers. waves 1 to 3 feet. 
.thursday...north winds 10 to 15 knots. a chance of showers.
waves 1 to 3 feet. 
.thursday night...north winds 10 to 15 knots. a chance of
showers. waves 1 to 3 feet. 
.friday...northwest winds 10 to 15 knots. a chance of showers.
waves 1 to 3 feet. 
.saturday...northwest winds 5 to 10 knots becoming west 10 to
15 knots early in the evening...then becoming northwest 5 to
10 knots in the late evening and early morning. waves 2 feet or
less. 
.sunday...northwest winds 5 to 10 knots. waves 2 feet or less. 


$$

fzus63 kdtx 202000
glflh 
expires:202505210400;;861744

open lake forecast for lake huron
national weather service detroit/pontiac mi
400 pm edt tue may 20 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...a low pressure system centered over missouri will
translate and broaden eastward tonight, reaching the northern
ohio valley by wednesday. this brings periods of rain and an
uptick in winds/waves for the central great lakes tonight and
wednesday. showery and breezy conditions persist through the end
of the workweek as the system slowly progresses across the
eastern great lakes.


lhz362-363-210400-
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-
400 pm edt tue may 20 2025

.tonight...northeast winds 10 to 15 knots becoming east 15 to
20 knots early in the morning. waves 3 to 5 feet. 
.wednesday...northeast winds 15 to 20 knots. a chance of showers.
waves 4 to 6 feet. waves occasionally around 8 feet. 
.wednesday night...northeast winds 15 to 20 knots. showers
likely. waves 4 to 6 feet. waves occasionally around 8 feet. 
.thursday...north winds 15 to 20 knots decreasing to 10 to
15 knots early in the afternoon. showers likely. waves 4 to
6 feet. 
.thursday night...northwest winds 10 to 15 knots. a chance of
showers. waves 3 to 5 feet. waves occasionally around 8 feet. 
.friday...northwest winds 10 to 15 knots. a chance of showers.
waves 2 to 4 feet. 
.saturday...northwest winds 10 to 15 knots decreasing to 5 to
10 knots until early morning. waves 1 to 3 feet. 
.sunday...northwest winds 5 to 10 knots. waves 2 feet or less. 


$$

fzus63 kdtx 202000
glflh 
expires:202505210400;;861745

open lake forecast for lake huron
national weather service detroit/pontiac mi
400 pm edt tue may 20 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...a low pressure system centered over missouri will
translate and broaden eastward tonight, reaching the northern
ohio valley by wednesday. this brings periods of rain and an
uptick in winds/waves for the central great lakes tonight and
wednesday. showery and breezy conditions persist through the end
of the workweek as the system slowly progresses across the
eastern great lakes.


lhz462>464-210400-
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-
400 pm edt tue may 20 2025

.tonight...northeast winds 10 to 15 knots. a chance of showers
after midnight. waves 2 to 4 feet. 
.wednesday...northeast winds 10 to 15 knots. showers likely in
the morning...then showers in the afternoon. waves 3 to 5 feet. 
.wednesday night...northeast winds 10 to 15 knots. showers likely
in the evening...then a chance of showers after midnight. waves
4 to 6 feet. waves occasionally around 8 feet. 
.thursday...north winds 15 to 20 knots backing to the northwest
early in the afternoon. showers likely. waves 4 to 6 feet. waves
occasionally around 8 feet. 
.thursday night...north winds 15 to 20 knots becoming northwest
10 to 15 knots in the late evening and overnight. a chance of
showers. waves 3 to 5 feet. 
.friday...northwest winds 10 to 15 knots. a chance of showers.
waves 2 to 4 feet. 
.saturday...northwest winds 10 to 15 knots decreasing to 5 to
10 knots until early morning. waves 1 to 3 feet. 
.sunday...north winds 5 to 10 knots. waves 2 feet or less. 


$$

fzus63 kmkx 201956
glflm 
expires:202505210315;;861579

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
256 pm cdt tue may 20 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... 

breezy easterly winds will continue this afternoon into 
tonight, becoming northerly by wednesday afternoon as low 
pressure of 29.5 inches travels from eastern iowa to the eastern
great lakes. a few gales will likely persist into late
afternoon in the south, with winds then still gusting to around
30 knots this evening into tonight. a gale warning remains in
effect until 21z over roughly the southern 1/3 of the lake. 

breezy northerly winds will continue on thursday as the low
stalls over the eastern great lakes, while high pressure of 30.2
inches approaches from the west. lighter winds are likely by the 
weekend as the high moves overhead.


lmz261-362-364-366-563-565-567-868-210315-
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-
256 pm cdt tue may 20 2025

sheboygan wi to pentwater mi north...

.tonight...east winds to 30 kt becoming northeast. rain showers
likely. waves 4 to 7 ft occasionally to 9 ft subsiding to 4 to
6 ft occasionally to 8 ft. 
.wednesday...northeast winds to 30 kt. rain showers in the
morning, then chance of rain showers in the afternoon. waves 4 to
6 ft occasionally to 8 ft. 
.wednesday night...northeast winds 15 to 25 kt becoming north.
chance of rain showers in the evening. waves 4 to 6 ft
occasionally to 8 ft subsiding to 3 to 5 ft. 
.thursday...north winds 15 to 25 kt increasing to 30 kt. waves
4 to 6 ft occasionally to 8 ft. 
.thursday night...north winds 15 to 25 kt becoming northwest
10 to 20 kt. waves 3 to 5 ft. 
.friday...northwest winds 10 to 20 kt increasing to 15 to 25 kt.
waves 3 to 5 ft. 
.friday night...north winds 10 to 20 kt becoming northwest. waves
1 to 3 ft. 
.saturday...north winds 10 to 15 kt becoming northwest 10 to
20 kt. waves 1 to 2 ft. 
.sunday...north winds 10 to 15 kt increasing to 10 to 20 kt.
waves 1 to 2 ft.  

$$

fzus63 kmkx 201956
glflm 
expires:202505210315;;861581

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
256 pm cdt tue may 20 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... 

breezy easterly winds will continue this afternoon into 
tonight, becoming northerly by wednesday afternoon as low 
pressure of 29.5 inches travels from eastern iowa to the eastern
great lakes. a few gales will likely persist into late
afternoon in the south, with winds then still gusting to around
30 knots this evening into tonight. a gale warning remains in
effect until 21z over roughly the southern 1/3 of the lake. 

breezy northerly winds will continue on thursday as the low
stalls over the eastern great lakes, while high pressure of 30.2
inches approaches from the west. lighter winds are likely by the 
weekend as the high moves overhead.


lmz669-870-210315-
lake michigan from sheboygan to port washington wi 5 nm offshore
to mid lake-
lake michigan from whitehall to pentwater mi 5 nm offshore to mid
lake-
256 pm cdt tue may 20 2025

sheboygan wi to pentwater mi south to port washington wi to
whitehall mi...

.tonight...northeast winds to 30 kt diminishing to 15 to 25 kt.
rain showers this evening, then rain showers likely overnight.
waves 4 to 7 ft occasionally to 9 ft. 
.wednesday...northeast winds 15 to 25 kt. rain showers. waves
4 to 6 ft occasionally to 8 ft. 
.wednesday night...north winds 15 to 25 kt. rain showers in the
evening, then chance of rain showers overnight. waves 4 to 6 ft
occasionally to 8 ft. 
.thursday...north winds 15 to 25 kt increasing to 30 kt. waves
4 to 7 ft occasionally to 9 ft. 
.thursday night...north winds 15 to 25 kt becoming northwest
10 to 20 kt. waves 4 to 6 ft occasionally to 8 ft subsiding to
3 to 5 ft. 
.friday...northwest winds 15 to 25 kt becoming north. waves 3 to
5 ft. 
.friday night...north winds 10 to 20 kt becoming northwest 5 to
10 kt. waves 2 to 4 ft subsiding to 1 to 2 ft. 
.saturday...north winds 10 to 15 kt becoming northeast 10 to
20 kt. waves 1 to 2 ft. 
.sunday...northeast winds 10 to 15 kt becoming north 10 to 20 kt.
waves 1 to 2 ft.  

$$

fzus63 kmkx 201956
glflm 
expires:202505210315;;861580

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
256 pm cdt tue may 20 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... 

breezy easterly winds will continue this afternoon into 
tonight, becoming northerly by wednesday afternoon as low 
pressure of 29.5 inches travels from eastern iowa to the eastern
great lakes. a few gales will likely persist into late
afternoon in the south, with winds then still gusting to around
30 knots this evening into tonight. a gale warning remains in
effect until 21z over roughly the southern 1/3 of the lake. 

breezy northerly winds will continue on thursday as the low
stalls over the eastern great lakes, while high pressure of 30.2
inches approaches from the west. lighter winds are likely by the 
weekend as the high moves overhead.


lmz080-671-673-675-777-779-872-874-876-878-210315-
lake michigan from michigan city in to st. joseph mi 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 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-
256 pm cdt tue may 20 2025

port washington wi to whitehall mi south...

...gale warning in effect until 4 pm cdt this afternoon...

.tonight...east winds to 30 kt. 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. 
.wednesday...northeast winds 15 to 25 kt becoming north. rain
showers likely in the morning, then rain showers in the
afternoon. waves 4 to 6 ft occasionally to 8 ft. 
.wednesday night...north winds 15 to 25 kt. rain showers in the
evening, then chance of rain showers overnight. waves 4 to 6 ft
occasionally to 8 ft. 
.thursday...north winds 15 to 25 kt increasing to 30 kt. waves
4 to 7 ft occasionally to 9 ft building to 5 to 8 ft occasionally
to 10 ft. 
.thursday night...north winds 15 to 25 kt becoming northwest
10 to 20 kt. waves 5 to 8 ft occasionally to 10 ft subsiding to
4 to 6 ft occasionally to 8 ft. 
.friday...northwest winds 15 to 25 kt becoming north. waves 4 to
6 ft occasionally to 8 ft. 
.friday night...north winds 10 to 20 kt diminishing to 5 to
10 kt. waves 3 to 5 ft subsiding to 1 to 3 ft. 
.saturday...north winds 10 to 15 kt increasing to 10 to 20 kt.
waves 1 to 3 ft. 
.sunday...northeast winds 10 to 15 kt becoming north 10 to 20 kt.
waves 1 to 3 ft.  

$$

fzus63 kmqt 202018
glfls 
expires:202505210430;;863247

open lake forecast for lake superior
national weather service marquette mi
issued by national weather service gaylord mi
418 pm edt tue may 20 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...
29.6inch low pressure meandering over iowa with 30.6inch surface
high over hudson bay ever so slightly retreating northward.
surface low still expected to weaken and traverse the ohio valley
wednesday...reforming between lakes huron and erie/ontario
thursday...before slipping eastward into new england friday...as
30.3inch surface high begins to ooze into the upper midwest/upper
great lakes.



lsz267-210430-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
418 pm edt tue may 20 2025

.late this afternoon...northeast winds 10 to 20 knots. waves 1 to
3 feet subsiding to calm to 2 feet. 
.tonight...east winds 15 to 25 knots backing northeast late.
waves building to 3 to 5 feet occasionally to 7 feet. 
.wednesday...northeast winds 15 to 25 knots. waves subsiding to
2 to 4 feet. 
.wednesday night...northeast winds 15 to 25 knots backing north
late. waves 2 to 4 feet. 
.thursday...north winds 15 to 25 knots. a slight chance of rain
showers. waves 2 to 4 feet. 
.thursday night...north winds 15 to 25 knots diminishing to 10 to
20 knots after midnight. a chance of rain showers. waves 2 to
4 feet. 
.friday...north winds 10 to 20 knots backing northwest by mid
afternoon. a chance of rain showers. waves 2 to 4 feet. 
.friday night...northwest winds 10 to 20 knots veering north
after midnight. waves subsiding to calm to 2 feet. 
.saturday...northwest winds 10 to 20 knots. waves calm to 2 feet.
.sunday...northwest winds 10 to 20 knots diminishing to 5 to
15 knots. waves calm to 2 feet. 

$$

fzus63 kmqt 202018
glfls 
expires:202505210430;;863242

open lake forecast for lake superior
national weather service marquette mi
issued by national weather service gaylord mi
418 pm edt tue may 20 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...
29.6inch low pressure meandering over iowa with 30.6inch surface
high over hudson bay ever so slightly retreating northward.
surface low still expected to weaken and traverse the ohio valley
wednesday...reforming between lakes huron and erie/ontario
thursday...before slipping eastward into new england friday...as
30.3inch surface high begins to ooze into the upper midwest/upper
great lakes.



lsz162-210430-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
418 pm edt tue may 20 2025 /318 pm cdt tue may 20 2025/

...gale warning in effect through wednesday afternoon...

.late this afternoon...northeast gales to 45 knots. a chance of
rain showers. waves 11 to 15 feet occasionally to 19 feet
subsiding to 10 to 14 feet occasionally to 18 feet. 
.tonight...east gales to 40 knots becoming northeast gales to
35 knots late. a chance of rain showers. waves subsiding to 5 to
8 feet occasionally to 10 feet, then building to 6 to 9 feet
occasionally to 11 feet. 
.wednesday...northeast gales to 35 knots diminishing to 20 to
30 knots in the afternoon. a slight chance of rain showers
through early afternoon. waves building to 7 to 10 feet
occasionally to 13 feet, then subsiding to 4 to 7 feet
occasionally to 9 feet. 
.wednesday night...northeast winds 10 to 20 knots backing north
after midnight. waves subsiding to 1 to 3 feet. 
.thursday...north winds 10 to 20 knots becoming east 5 to
15 knots by mid afternoon. waves subsiding to calm to 2 feet. 
.thursday night...north winds 5 to 15 knots. waves calm to
2 feet. 
.friday...north winds 5 to 15 knots veering south by mid
afternoon. waves calm to 2 feet. 
.friday night...east winds 5 to 15 knots backing north after
midnight. waves calm to 2 feet. 
.saturday...east winds 5 to 15 knots backing northeast. waves
calm to 2 feet. 
.sunday...northeast winds 5 to 15 knots backing northwest. waves
calm to 2 feet. 

$$

fzus63 kmqt 202018
glfls 
expires:202505210430;;863243

open lake forecast for lake superior
national weather service marquette mi
issued by national weather service gaylord mi
418 pm edt tue may 20 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...
29.6inch low pressure meandering over iowa with 30.6inch surface
high over hudson bay ever so slightly retreating northward.
surface low still expected to weaken and traverse the ohio valley
wednesday...reforming between lakes huron and erie/ontario
thursday...before slipping eastward into new england friday...as
30.3inch surface high begins to ooze into the upper midwest/upper
great lakes.



lsz263-210430-
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-
418 pm edt tue may 20 2025

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

.late this afternoon...east gales to 40 knots. a slight chance of
rain showers. waves 9 to 12 feet occasionally to 15 feet
subsiding to 8 to 11 feet occasionally to 14 feet. 
.tonight...east gales to 35 knots diminishing to 20 to 30 knots
after midnight. a slight chance of rain showers through midnight.
waves subsiding to 3 to 6 feet occasionally to 8 feet, then
building to 5 to 8 feet occasionally to 10 feet. 
.wednesday...northeast winds 20 to 30 knots. waves building to
6 to 9 feet occasionally to 11 feet, then subsiding to 4 to
7 feet occasionally to 9 feet. 
.wednesday night...northeast winds 10 to 20 knots diminishing to
5 to 15 knots after midnight, then backing north late. waves
subsiding to 2 to 4 feet. 
.thursday...north winds 10 to 20 knots. waves subsiding to 1 to
3 feet. 
.thursday night...north winds 10 to 20 knots. waves 1 to 3 feet. 
.friday...north winds 5 to 15 knots. waves subsiding to calm to
2 feet. 
.friday night...northwest winds 5 to 15 knots veering north after
midnight. waves calm to 2 feet. 
.saturday...northeast winds 5 to 15 knots backing north. waves
calm to 2 feet. 
.sunday...north winds 5 to 15 knots backing west. waves calm to
2 feet. 

$$

fzus63 kmqt 202018
glfls 
expires:202505210430;;863244

open lake forecast for lake superior
national weather service marquette mi
issued by national weather service gaylord mi
418 pm edt tue may 20 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...
29.6inch low pressure meandering over iowa with 30.6inch surface
high over hudson bay ever so slightly retreating northward.
surface low still expected to weaken and traverse the ohio valley
wednesday...reforming between lakes huron and erie/ontario
thursday...before slipping eastward into new england friday...as
30.3inch surface high begins to ooze into the upper midwest/upper
great lakes.



lsz264-210430-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
418 pm edt tue may 20 2025

.late this afternoon...east winds 20 to 30 knots. waves 4 to
7 feet occasionally to 9 feet subsiding to 3 to 5 feet
occasionally to 7 feet. 
.tonight...east winds 20 to 30 knots. waves subsiding to 2 to
4 feet, then building to 5 to 8 feet occasionally to 10 feet. 
.wednesday...northeast winds 20 to 30 knots diminishing to 15 to
25 knots in the afternoon. waves subsiding to 2 to 4 feet. 
.wednesday night...northeast winds 10 to 20 knots backing north
late. waves subsiding to 1 to 3 feet, then building to 2 to
4 feet. 
.thursday...north winds 10 to 20 knots. waves subsiding to 1 to
3 feet. 
.thursday night...north winds 10 to 20 knots. waves building to
2 to 4 feet. 
.friday...north winds 5 to 15 knots. waves subsiding to calm to
2 feet. 
.friday night...northwest winds 5 to 15 knots veering north after
midnight. waves calm to 2 feet. 
.saturday...north winds 5 to 15 knots becoming northwest less
than 10 knots. waves calm to 2 feet. 
.sunday...north winds 5 to 15 knots becoming northwest less than
10 knots. waves calm to 2 feet. 

$$

fzus63 kmqt 202018
glfls 
expires:202505210430;;863245

open lake forecast for lake superior
national weather service marquette mi
issued by national weather service gaylord mi
418 pm edt tue may 20 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...
29.6inch low pressure meandering over iowa with 30.6inch surface
high over hudson bay ever so slightly retreating northward.
surface low still expected to weaken and traverse the ohio valley
wednesday...reforming between lakes huron and erie/ontario
thursday...before slipping eastward into new england friday...as
30.3inch surface high begins to ooze into the upper midwest/upper
great lakes.



lsz265-210430-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
418 pm edt tue may 20 2025

.late this afternoon...east 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...east winds 15 to 25 knots increasing to 20 to 30 knots
late. waves subsiding to 2 to 4 feet, then building to 4 to
7 feet occasionally to 9 feet. 
.wednesday...east winds 20 to 30 knots backing northeast in the
afternoon, then diminishing to 15 to 25 knots late. waves
subsiding to 2 to 4 feet. 
.wednesday night...northeast winds 10 to 20 knots becoming north
15 to 25 knots late. waves subsiding to 1 to 3 feet, then
building to 2 to 4 feet. 
.thursday...north winds 15 to 25 knots. waves 2 to 4 feet. 
.thursday night...north winds 10 to 20 knots. waves subsiding to
1 to 3 feet. 
.friday...north winds 10 to 20 knots. waves subsiding to calm to
2 feet. 
.friday night...northwest winds 10 to 20 knots diminishing to
5 to 15 knots after midnight. waves calm to 2 feet. 
.saturday...north winds 5 to 15 knots backing northwest. waves
calm to 2 feet. 
.sunday...north winds 5 to 15 knots backing northwest. waves calm
to 2 feet. 

$$

fzus63 kmqt 202018
glfls 
expires:202505210430;;863246

open lake forecast for lake superior
national weather service marquette mi
issued by national weather service gaylord mi
418 pm edt tue may 20 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...
29.6inch low pressure meandering over iowa with 30.6inch surface
high over hudson bay ever so slightly retreating northward.
surface low still expected to weaken and traverse the ohio valley
wednesday...reforming between lakes huron and erie/ontario
thursday...before slipping eastward into new england friday...as
30.3inch surface high begins to ooze into the upper midwest/upper
great lakes.



lsz266-210430-
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-
418 pm edt tue may 20 2025

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

$$