fzus63 kdtx 020744
glflh 
expires:202504021600;;599014

open lake forecast for lake huron
national weather service detroit/pontiac mi
344 am edt wed apr 2 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, 29.20 inches, tracks into lake superior
late tonight. this low drags a cold front across the great lakes
bringing the threat for widespread easterly gale force gusts and
strong to severe thunderstorms today. high pressure building in
on thursday maintains gusty westerly flow through the day before
winds subside through friday.


lhz361-362-021600-
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-
344 am edt wed apr 2 2025

...gale warning in effect through this evening...

.today...southeast winds 20 to 25 knots with gusts to around
30 knots increasing to 30 knots with gusts to 40 knot gales in
the late morning and afternoon. snow showers...showers and sleet
in the afternoon. waves 8 to 12 feet building to 12 to 16 feet in
the afternoon. waves occasionally around 20 feet. 
.tonight...east winds to 30 knots with gusts to 40 knot gales
becoming southeast 15 to 20 knots. showers in the evening. waves
12 to 16 feet subsiding to 8 to 12 feet after midnight. waves
occasionally around 20 feet. 
.thursday...southwest winds 15 to 20 knots with gusts to 35 knot
gales. waves 6 to 9 feet. waves occasionally around 12 feet. 
.thursday night...west winds 15 to 20 knots decreasing to 5 to
10 knots. waves 4 to 6 feet. waves occasionally around 8 feet. 
.friday...northwest winds 5 to 10 knots veering to the east late
in the evening. waves 1 to 3 feet. 
.saturday...northeast winds 5 to 10 knots increasing to 10 to
15 knots in the late morning and early afternoon...then backing
to the north until early morning. a chance of rain early in the
morning. waves 1 to 3 feet building to 2 to 4 feet until early
morning. 
.sunday...northwest winds 10 to 15 knots increasing to 15 to
20 knots until early morning. waves 4 to 6 feet. waves
occasionally around 8 feet. 


$$

fzus63 kdtx 020744
glflh 
expires:202504021600;;599015

open lake forecast for lake huron
national weather service detroit/pontiac mi
344 am edt wed apr 2 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, 29.20 inches, tracks into lake superior
late tonight. this low drags a cold front across the great lakes
bringing the threat for widespread easterly gale force gusts and
strong to severe thunderstorms today. high pressure building in
on thursday maintains gusty westerly flow through the day before
winds subside through friday.


lhz363-462>464-021600-
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-
344 am edt wed apr 2 2025

...gale warning in effect through this evening...

.today...southeast winds 20 to 25 knots becoming east to 30 knots
in the afternoon. gusts to 35 knot gales. a chance of snow
showers and showers in the morning...then rain and snow showers
in the afternoon. snow may be heavy at times. waves 8 to 12 feet.
waves occasionally around 15 feet. 
.tonight...southeast winds 20 to 25 knots with gusts to 35 knot
gales becoming south 15 to 20 knots with gusts to around 30 knots
after midnight. showers and a chance of thunderstorms. waves 8 to
12 feet. waves occasionally around 15 feet. 
.thursday...southwest winds 15 to 20 knots increasing to 20 to
25 knots in the late morning and early afternoon...then
decreasing to 15 to 20 knots early in the afternoon. gusts to
35 knot gales. waves 6 to 9 feet. waves occasionally around
12 feet. 
.thursday night...west winds 10 to 15 knots becoming northwest
5 to 10 knots in the late evening and overnight. waves 3 to
5 feet subsiding to 1 to 3 feet after midnight. 
.friday...northwest winds 5 to 10 knots veering to the north. a
chance of rain late in the evening. waves 1 to 3 feet. 
.saturday...northeast winds 10 to 15 knots. a chance of rain
early in the morning. a chance of rain in the late evening and
early morning. waves 2 to 4 feet. 
.sunday...northwest winds 10 to 15 knots increasing to 15 to
20 knots in the late evening and early morning. waves 4 to
6 feet. waves occasionally around 8 feet. 


$$

fzus63 kmkx 020156
glflm 
expires:202504020915;;584628

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
856 pm cdt tue apr 1 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...

southeast winds are quickly strengthening across the open waters 
tonight as 29.2 inch low pressure develops in the central great 
plains. gusts will continue to increase through the predawn hours 
as the low progresses into the missouri river valley. widespread 
southeasterly gales will overspread lake michigan from south to 
north by sunrise wednesday. a gale warning remains in effect 
between 1 am & 1 pm cdt wednesday across the southern two-thirds 
of the open waters, and between 5 am & 4 pm cdt wednesday across 
the northern third. the surface low will progress toward lake 
superior wednesday evening, moving into ontario by early thursday 
morning. showers and thunderstorms are expected ahead of the 
low from late tonight through wednesday evening. some storms 
could be strong to severe wednesday afternoon, particularly across
the southern half of lake michigan. winds will turn southwesterly
& gradually decrease in the wake of the departing surface low 
wednesday night.

30.1 inch high pressure will build into the northern great plains
thursday afternoon, allowing winds to turn more westerly across 
the open waters. winds will become light & variable thursday night
as the high crosses lake michigan. winds will shift out of the 
northeast on friday as low pressure forms in the southern great 
plains. winds will increase during the day on saturday as the low 
moves into the ohio river valley. gales aren't forecast at this 
time, though trends will be monitored. periods of rain will 
accompany the approaching low friday afternoon through saturday, 
with a few thunderstorms possible over far southern lake michigan.


lmz261-362-364-563-020915-
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-
856 pm cdt tue apr 1 2025

sturgeon bay wi to point betsie mi north...

...gale warning in effect from 5 am cdt wednesday through
wednesday afternoon...

.rest of tonight...east winds 15 to 25 kt becoming southeast to
30 kt. slight chance of snow through early evening, then chance
of snow overnight. waves 1 to 3 ft building to 5 to 8 ft
occasionally to 10 ft. 
.wednesday...southeast gales to 35 kt. snow and rain in the
morning, then rain, snow and slight chance of thunderstorms in
the afternoon. waves 7 to 10 ft occasionally to 13 ft. 
.wednesday night...southeast gales to 35 kt becoming south to
30 kt late in the evening, then becoming southwest 15 to 25 kt
after midnight increasing to 30 kt late. chance of rain. waves
6 to 9 ft occasionally to 12 ft. 
.thursday...southwest gales to 35 kt becoming west to 30 kt.
waves 6 to 9 ft occasionally to 12 ft. 
.thursday night...west winds 10 to 20 kt becoming northwest 10 to
15 kt. waves 3 to 5 ft subsiding to 1 to 2 ft. 
.friday...north winds 5 to 10 kt becoming northeast. waves 1 ft
or less. 
.friday night...northeast winds 10 to 15 kt becoming east. waves
1 to 2 ft. 
.saturday...northeast winds 10 to 15 kt becoming north 10 to
20 kt. waves 1 to 3 ft. 
.sunday...northwest winds 10 to 20 kt increasing to 15 to 25 kt.
waves 2 to 4 ft.  

$$

fzus63 kmkx 020156
glflm 
expires:202504020915;;584629

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
856 pm cdt tue apr 1 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...

southeast winds are quickly strengthening across the open waters 
tonight as 29.2 inch low pressure develops in the central great 
plains. gusts will continue to increase through the predawn hours 
as the low progresses into the missouri river valley. widespread 
southeasterly gales will overspread lake michigan from south to 
north by sunrise wednesday. a gale warning remains in effect 
between 1 am & 1 pm cdt wednesday across the southern two-thirds 
of the open waters, and between 5 am & 4 pm cdt wednesday across 
the northern third. the surface low will progress toward lake 
superior wednesday evening, moving into ontario by early thursday 
morning. showers and thunderstorms are expected ahead of the 
low from late tonight through wednesday evening. some storms 
could be strong to severe wednesday afternoon, particularly across
the southern half of lake michigan. winds will turn southwesterly
& gradually decrease in the wake of the departing surface low 
wednesday night.

30.1 inch high pressure will build into the northern great plains
thursday afternoon, allowing winds to turn more westerly across 
the open waters. winds will become light & variable thursday night
as the high crosses lake michigan. winds will shift out of the 
northeast on friday as low pressure forms in the southern great 
plains. winds will increase during the day on saturday as the low 
moves into the ohio river valley. gales aren't forecast at this 
time, though trends will be monitored. periods of rain will 
accompany the approaching low friday afternoon through saturday, 
with a few thunderstorms possible over far southern lake michigan.


lmz366-565-567-868-020915-
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-
856 pm cdt tue apr 1 2025

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

...gale warning in effect from 1 am cdt wednesday through
wednesday afternoon...

.rest of tonight...east winds 10 to 15 kt becoming southeast
gales to 35 kt. chance of snow through early evening, then snow
and slight chance of rain overnight. waves 1 to 2 ft building to
8 to 11 ft occasionally to 14 ft. 
.wednesday...southeast gales to 40 kt diminishing to 30 kt. rain
and slight chance of snow in the morning, then rain and slight
chance of thunderstorms in the afternoon. waves 10 to 14 ft
occasionally to 18 ft subsiding to 8 to 11 ft occasionally to
14 ft. 
.wednesday night...south winds to 30 kt becoming southwest 15 to
25 kt. waves 7 to 10 ft occasionally to 13 ft subsiding to 6 to
9 ft occasionally to 12 ft. 
.thursday...southwest winds 15 to 25 kt becoming west. waves 5 to
8 ft occasionally to 10 ft subsiding to 4 to 7 ft occasionally to
9 ft. 
.thursday night...west winds 10 to 15 kt becoming north 5 to
10 kt. waves 2 to 4 ft subsiding to 1 to 2 ft. 
.friday...northeast winds 5 to 10 kt increasing to 10 to 15 kt.
waves 1 to 2 ft. 
.friday night...northeast winds 10 to 15 kt. waves 1 to 2 ft. 
.saturday...north winds 10 to 20 kt. waves 2 to 4 ft. 
.sunday...northwest winds 10 to 20 kt becoming north. waves 3 to
5 ft.  

$$

fzus63 kmkx 020156
glflm 
expires:202504020915;;584630

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
856 pm cdt tue apr 1 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...

southeast winds are quickly strengthening across the open waters 
tonight as 29.2 inch low pressure develops in the central great 
plains. gusts will continue to increase through the predawn hours 
as the low progresses into the missouri river valley. widespread 
southeasterly gales will overspread lake michigan from south to 
north by sunrise wednesday. a gale warning remains in effect 
between 1 am & 1 pm cdt wednesday across the southern two-thirds 
of the open waters, and between 5 am & 4 pm cdt wednesday across 
the northern third. the surface low will progress toward lake 
superior wednesday evening, moving into ontario by early thursday 
morning. showers and thunderstorms are expected ahead of the 
low from late tonight through wednesday evening. some storms 
could be strong to severe wednesday afternoon, particularly across
the southern half of lake michigan. winds will turn southwesterly
& gradually decrease in the wake of the departing surface low 
wednesday night.

30.1 inch high pressure will build into the northern great plains
thursday afternoon, allowing winds to turn more westerly across 
the open waters. winds will become light & variable thursday night
as the high crosses lake michigan. winds will shift out of the 
northeast on friday as low pressure forms in the southern great 
plains. winds will increase during the day on saturday as the low 
moves into the ohio river valley. gales aren't forecast at this 
time, though trends will be monitored. periods of rain will 
accompany the approaching low friday afternoon through saturday, 
with a few thunderstorms possible over far southern lake michigan.


lmz080-669-671-673-675-777-779-870-872-874-876-878-020915-
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-
856 pm cdt tue apr 1 2025

sheboygan wi to pentwater mi south...

...gale warning in effect from 1 am cdt wednesday through
wednesday afternoon...

.rest of tonight...east winds 15 to 25 kt increasing to gales to
40 kt. chance of rain through early evening, then rain and slight
chance of snow overnight. waves 3 to 5 ft building to 10 to 14 ft
occasionally to 18 ft. 
.wednesday...southeast gales to 40 kt diminishing to gales to
35 kt early in the afternoon, then becoming south to 30 kt late.
rain with a chance of thunderstorms. waves 12 to 16 ft
occasionally to 21 ft subsiding to 8 to 11 ft occasionally to
14 ft. 
.wednesday night...south winds to 30 kt becoming southwest 15 to
25 kt. chance of rain and thunderstorms in the evening. waves
7 to 10 ft occasionally to 13 ft subsiding to 6 to 9 ft
occasionally to 12 ft. 
.thursday...west winds 15 to 25 kt. waves 4 to 7 ft occasionally
to 9 ft. 
.thursday night...northwest winds 5 to 10 kt becoming north 10 to
15 kt. waves 2 to 4 ft subsiding to 1 to 2 ft. 
.friday...northeast winds 10 to 15 kt increasing to 10 to 20 kt.
waves 1 to 3 ft. 
.friday night...northeast winds 10 to 20 kt. chance of rain
showers. waves 2 to 4 ft. 
.saturday...north winds 10 to 20 kt. chance of rain showers.
waves 4 to 6 ft occasionally to 8 ft. 
.sunday...north winds 10 to 20 kt. waves 4 to 6 ft occasionally
to 8 ft.  

$$

fzus63 kmqt 020142
glfls 
expires:202504020945;;584099

open lake forecast for lake superior
national weather service marquette mi
942 pm edt tue apr 1 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...30.5 inch high pressure will press east into quebec 
tonight while a 29.2 inch low lifts into the great lakes from the 
plains. this low moves through lake superior wednesday night at 
29.3 inches, then lifts to near james bay by thursday afternoon 
at 29.4 inches. 30.3 inch ridging anchors across lake superior 
friday morning, then weakens to 30.0 inches by saturday. weak 
trough of 30.0 inches moves through the upper great lakes saturday
night and sunday.


lsz162-020945-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
942 pm edt tue apr 1 2025 /842 pm cdt tue apr 1 2025/

...gale warning in effect from 5 am edt /4 am cdt/ wednesday
through wednesday evening...

.rest of tonight...east winds 15 to 25 knots becoming southeast
20 to 30 knots after midnight, then backing east late. a slight
chance of snow by late evening, then snow after midnight. waves
3 to 5 feet occasionally to 7 feet building to 5 to 8 feet
occasionally to 10 feet. 
.wednesday...east gales to 35 knots. snow. a slight chance of
rain and sleet by mid afternoon. waves building to 10 to 14 feet
occasionally to 18 feet. 
.wednesday night...east gales to 35 knots becoming northeast
20 to 30 knots after midnight, then backing northwest late. rain
showers, possibly mixed with snow and sleet through midnight,
then a chance of rain and snow showers after midnight. waves
subsiding to 3 to 5 feet occasionally to 7 feet. 
.thursday...west winds 15 to 25 knots diminishing to 10 to
20 knots by mid afternoon. waves subsiding to 1 to 3 feet. 
.thursday night...west winds 5 to 15 knots veering northwest
after midnight. waves subsiding to calm to 2 feet. 
.friday...west winds 5 to 15 knots backing south by mid
afternoon. waves calm to 2 feet. 
.friday night...south winds 5 to 15 knots becoming northwest
10 to 20 knots after midnight. waves calm to 2 feet. 
.saturday...west winds 10 to 20 knots increasing to 15 to
25 knots. waves building to 1 to 3 feet. 
.sunday...northwest winds 15 to 25 knots veering north. waves
building to 2 to 4 feet. 

$$

fzus63 kmqt 020142
glfls 
expires:202504020945;;584104

open lake forecast for lake superior
national weather service marquette mi
942 pm edt tue apr 1 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...30.5 inch high pressure will press east into quebec 
tonight while a 29.2 inch low lifts into the great lakes from the 
plains. this low moves through lake superior wednesday night at 
29.3 inches, then lifts to near james bay by thursday afternoon 
at 29.4 inches. 30.3 inch ridging anchors across lake superior 
friday morning, then weakens to 30.0 inches by saturday. weak 
trough of 30.0 inches moves through the upper great lakes saturday
night and sunday.


lsz267-020945-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
942 pm edt tue apr 1 2025

...gale warning in effect from 2 am edt wednesday through
wednesday morning...
...storm warning in effect from wednesday morning through
wednesday afternoon...

.rest of tonight...southeast winds 20 to 30 knots increasing to
gales to 35 knots late. waves 2 to 4 feet building to 6 to 9 feet
occasionally to 11 feet. 
.wednesday...southeast gales to 45 knots increasing to storm
force winds to 50 knots in the afternoon. a chance of snow
through early afternoon, then snow, possibly mixed with sleet and
rain likely by mid afternoon. waves building to 10 to 14 feet
occasionally to 18 feet. 
.wednesday night...southeast gales to 45 knots becoming south
20 to 30 knots late. sleet likely through midnight. a chance of
rain showers. waves subsiding to 3 to 6 feet occasionally to
8 feet. 
.thursday...west gales to 35 knots. a slight chance of rain and
snow showers through early afternoon. waves building to 8 to
11 feet occasionally to 14 feet, then subsiding to 6 to 9 feet
occasionally to 11 feet. 
.thursday night...west winds 15 to 25 knots becoming northwest
10 to 20 knots after midnight. waves subsiding to 1 to 3 feet. 
.friday...northwest winds 5 to 15 knots backing west by mid
afternoon. waves subsiding to calm to 2 feet. 
.friday night...east winds 5 to 15 knots veering southeast after
midnight. waves calm to 2 feet. 
.saturday...northwest winds 10 to 20 knots. waves building to
2 to 4 feet. 
.sunday...northwest winds 15 to 25 knots becoming north 20 to
30 knots. a chance of snow showers. waves building to 4 to 8 feet
occasionally to 10 feet. 

$$

fzus63 kmqt 020142
glfls 
expires:202504020945;;584100

open lake forecast for lake superior
national weather service marquette mi
942 pm edt tue apr 1 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...30.5 inch high pressure will press east into quebec 
tonight while a 29.2 inch low lifts into the great lakes from the 
plains. this low moves through lake superior wednesday night at 
29.3 inches, then lifts to near james bay by thursday afternoon 
at 29.4 inches. 30.3 inch ridging anchors across lake superior 
friday morning, then weakens to 30.0 inches by saturday. weak 
trough of 30.0 inches moves through the upper great lakes saturday
night and sunday.


lsz263-020945-
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-
942 pm edt tue apr 1 2025

...gale warning in effect from 5 am edt wednesday through
wednesday evening...

.rest of tonight...southeast winds 10 to 20 knots increasing to
15 to 25 knots after midnight, then becoming east 20 to 30 knots
late. a chance of snow after midnight. waves 2 to 4 feet building
to 6 to 9 feet occasionally to 11 feet. 
.wednesday...east gales to 45 knots. a chance of snow through
early afternoon. rain. snow, possibly mixed with sleet by mid
afternoon. waves building to 15 to 20 feet occasionally to
25 feet. 
.wednesday night...east gales to 40 knots diminishing to 20 to
30 knots after midnight, then veering west late. rain showers
likely with pockets of snow showers and sleet through midnight,
then a chance of rain and snow showers after midnight. waves
subsiding to 4 to 7 feet occasionally to 9 feet. 
.thursday...west winds 20 to 30 knots. a slight chance of snow
showers through early afternoon. waves building to 5 to 8 feet
occasionally to 10 feet, then subsiding to 3 to 6 feet
occasionally to 8 feet. 
.thursday night...west winds 10 to 20 knots becoming northwest
5 to 15 knots after midnight. waves subsiding to calm to 2 feet. 
.friday...west winds 5 to 15 knots backing southwest by mid
afternoon. waves calm to 2 feet. 
.friday night...south winds 5 to 15 knots veering northwest after
midnight. waves calm to 2 feet. 
.saturday...west winds 10 to 20 knots. waves building to 2 to
4 feet. 
.sunday...northwest winds 10 to 20 knots becoming north 15 to
25 knots. waves building to 3 to 5 feet occasionally to 7 feet,
then subsiding to 2 to 4 feet. 

$$

fzus63 kmqt 020142
glfls 
expires:202504020945;;584101

open lake forecast for lake superior
national weather service marquette mi
942 pm edt tue apr 1 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...30.5 inch high pressure will press east into quebec 
tonight while a 29.2 inch low lifts into the great lakes from the 
plains. this low moves through lake superior wednesday night at 
29.3 inches, then lifts to near james bay by thursday afternoon 
at 29.4 inches. 30.3 inch ridging anchors across lake superior 
friday morning, then weakens to 30.0 inches by saturday. weak 
trough of 30.0 inches moves through the upper great lakes saturday
night and sunday.


lsz264-020945-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
942 pm edt tue apr 1 2025

...gale warning in effect from 2 am edt wednesday through
wednesday morning...
...storm warning in effect from wednesday morning through
wednesday afternoon...

.rest of tonight...southeast winds 15 to 25 knots increasing to
20 to 30 knots late. a slight chance of snow after midnight.
waves 2 to 4 feet building to 7 to 10 feet occasionally to
13 feet. 
.wednesday...southeast gales to 40 knots becoming east gales to
45 knots in the afternoon. storm force winds to 50 knots are
possible. a chance of snow through early afternoon, then snow, 
possibly mixed with sleet and rain by mid afternoon. waves 
building to 15 to 20 feet occasionally to 25 feet. 
.wednesday night...east gales to 40 knots becoming southeast
20 to 30 knots after midnight, then veering west late. sleet
likely through midnight. rain showers, possibly mixed with snow.
waves subsiding to 5 to 8 feet occasionally to 10 feet. 
.thursday...west winds 20 to 30 knots. a chance of snow showers
through early afternoon. waves subsiding to 3 to 6 feet
occasionally to 8 feet. 
.thursday night...west winds 10 to 20 knots becoming northwest
5 to 15 knots after midnight. waves subsiding to calm to 2 feet. 
.friday...west winds 5 to 15 knots backing southwest by mid
afternoon. waves calm to 2 feet. 
.friday night...south winds 5 to 15 knots veering west after
midnight. waves calm to 2 feet. 
.saturday...west winds 10 to 20 knots veering northwest. waves
building to 3 to 5 feet occasionally to 7 feet. 
.sunday...north winds 10 to 20 knots increasing to 15 to
25 knots. waves building to 4 to 7 feet occasionally to 9 feet. 

$$

fzus63 kmqt 020142
glfls 
expires:202504020945;;584102

open lake forecast for lake superior
national weather service marquette mi
942 pm edt tue apr 1 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...30.5 inch high pressure will press east into quebec 
tonight while a 29.2 inch low lifts into the great lakes from the 
plains. this low moves through lake superior wednesday night at 
29.3 inches, then lifts to near james bay by thursday afternoon 
at 29.4 inches. 30.3 inch ridging anchors across lake superior 
friday morning, then weakens to 30.0 inches by saturday. weak 
trough of 30.0 inches moves through the upper great lakes saturday
night and sunday.


lsz265-020945-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
942 pm edt tue apr 1 2025

...gale warning in effect from 2 am edt wednesday through
wednesday evening...

.rest of tonight...southeast winds 20 to 30 knots increasing to
gales to 35 knots late. a chance of snow after midnight. waves
3 to 5 feet occasionally to 7 feet building to 6 to 9 feet
occasionally to 11 feet. 
.wednesday...southeast gales to 45 knots. a chance of snow
through early afternoon, then rain and snow likely, possibly
mixed with sleet by mid afternoon. waves building to 12 to
17 feet occasionally to 21 feet. 
.wednesday night...southeast winds 20 to 30 knots becoming south
15 to 25 knots after midnight, then becoming southwest 20 to
30 knots late. a chance of sleet through midnight. a chance of
rain showers. a slight chance of snow showers after midnight.
waves subsiding to 3 to 5 feet occasionally to 7 feet. 
.thursday...west gales to 35 knots diminishing to 15 to 25 knots
by mid afternoon. a slight chance of snow showers through early
afternoon. waves building to 4 to 7 feet occasionally to 9 feet,
then subsiding to 2 to 4 feet. 
.thursday night...west winds 10 to 20 knots. waves subsiding to
calm to 2 feet. 
.friday...west winds 5 to 15 knots backing southeast by mid
afternoon. waves calm to 2 feet. 
.friday night...southeast winds 10 to 20 knots veering west after
midnight. waves calm to 2 feet. 
.saturday...northwest winds 10 to 20 knots backing west. waves
calm to 2 feet. 
.sunday...northwest winds 15 to 25 knots veering north. waves
building to 3 to 6 feet occasionally to 8 feet. 

$$

fzus63 kmqt 020142
glfls 
expires:202504020945;;584103

open lake forecast for lake superior
national weather service marquette mi
942 pm edt tue apr 1 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...30.5 inch high pressure will press east into quebec 
tonight while a 29.2 inch low lifts into the great lakes from the 
plains. this low moves through lake superior wednesday night at 
29.3 inches, then lifts to near james bay by thursday afternoon 
at 29.4 inches. 30.3 inch ridging anchors across lake superior 
friday morning, then weakens to 30.0 inches by saturday. weak 
trough of 30.0 inches moves through the upper great lakes saturday
night and sunday.


lsz266-020945-
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-
942 pm edt tue apr 1 2025

...gale warning in effect from 2 am edt wednesday through
wednesday morning...
...storm warning in effect from wednesday morning through
wednesday afternoon...

.rest of tonight...southeast winds 20 to 30 knots increasing to
gales to 35 knots late. a slight chance of snow after midnight.
waves 3 to 5 feet occasionally to 7 feet building to 7 to 10 feet
occasionally to 13 feet. 
.wednesday...southeast gales to 45 knots increasing to storm
force winds to 50 knots in the afternoon. a chance of snow
through early afternoon, then snow likely with pockets of sleet
with rain by mid afternoon. waves building to 15 to 20 feet
occasionally to 25 feet. 
.wednesday night...southeast gales to 40 knots becoming south
20 to 30 knots after midnight, then veering southwest late. sleet
likely through midnight. a chance of rain showers. a slight
chance of snow showers after midnight. waves subsiding to 4 to
7 feet occasionally to 9 feet. 
.thursday...west gales to 35 knots diminishing to 20 to 30 knots
by mid afternoon. a slight chance of snow showers through early
afternoon. waves building to 7 to 10 feet occasionally to
13 feet, then subsiding to 5 to 8 feet occasionally to 10 feet. 
.thursday night...west winds 10 to 20 knots becoming northwest
5 to 15 knots after midnight. waves subsiding to 1 to 3 feet. 
.friday...west winds 5 to 15 knots backing southwest by mid
afternoon. waves subsiding to calm to 2 feet. 
.friday night...southeast winds 5 to 15 knots becoming south
10 to 20 knots after midnight. waves calm to 2 feet. 
.saturday...northwest winds 10 to 20 knots increasing to 15 to
25 knots. waves building to 2 to 4 feet. 
.sunday...northwest winds 15 to 25 knots becoming north 20 to
30 knots. waves building to 4 to 7 feet occasionally to 9 feet. 

$$