fzus61 kbuf 150202
glflo 
expires:202505150900;;525589

open lake forecast for lake ontario
national weather service buffalo ny
1001 pm edt wed may 14 2025

for waters beyond five nautical miles of shore on lake ontario

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 broad, weak 29.8 inch low will slowly drift across the 
ohio valley tonight. the weak remnant low will move from the mid 
atlantic thursday to new england friday. meanwhile, a 29.0 inch low 
over the upper midwest friday will weaken to 29.3 inches as it moves 
east over the upper great lakes by saturday morning, before entering 
into central quebec sunday.


loz062-150900-
lake ontario open waters from the niagara river to hamlin beach-
1001 pm edt wed may 14 2025

.overnight...east winds 5 to 15 knots. waves 1 to 3 feet. 
.thursday...east winds 5 to 10 knots. waves 1 foot or less. 
.thursday night...east winds 5 to 10 knots. showers likely with a
chance of thunderstorms overnight. waves 1 foot or less. 
.friday...southeast winds 5 to 10 knots becoming southwest.
showers likely with a chance of thunderstorms. waves 1 foot or
less. 
.friday night...southwest winds 5 to 10 knots becoming southeast.
a chance of showers in the evening, then a chance of showers and
thunderstorms overnight. waves 1 foot or less. 
.saturday...south winds 10 to 15 knots becoming west. showers
with a chance of thunderstorms during the day, then showers
likely saturday night. waves 1 to 2 feet building to 2 to 4 feet.
.sunday...west winds 15 to 20 knots becoming northwest 10 to
15 knots. waves 2 to 4 feet. 
.monday...northwest winds 10 to 15 knots becoming north. waves
1 to 2 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kbuf 150202
glflo 
expires:202505150900;;525590

open lake forecast for lake ontario
national weather service buffalo ny
1001 pm edt wed may 14 2025

for waters beyond five nautical miles of shore on lake ontario

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 broad, weak 29.8 inch low will slowly drift across the 
ohio valley tonight. the weak remnant low will move from the mid 
atlantic thursday to new england friday. meanwhile, a 29.0 inch low 
over the upper midwest friday will weaken to 29.3 inches as it moves 
east over the upper great lakes by saturday morning, before entering 
into central quebec sunday.


loz063>065-150900-
lake ontario open waters from hamlin beach to the saint lawrence
river-
1001 pm edt wed may 14 2025

.overnight...southeast winds 5 to 10 knots. waves 2 feet or
less. 
.thursday...southeast winds 5 to 10 knots becoming east. waves
1 foot or less. 
.thursday night...east winds 10 knots or less becoming southeast.
a chance of showers overnight. waves 1 foot or less. 
.friday...southeast winds 5 to 10 knots becoming southwest.
showers likely with a chance of thunderstorms. waves 1 foot or
less. 
.friday night...southwest winds 5 to 10 knots becoming south. a
chance of showers in the evening, then a chance of showers and
thunderstorms overnight. waves 1 foot or less. 
.saturday...south winds around 10 knots becoming west and
increasing to 15 to 20 knots. showers with a chance of
thunderstorms. waves 1 to 3 feet building to 2 to 4 feet. 
.sunday...west winds 15 to 20 knots becoming northwest 10 to
15 knots. a chance of showers. waves 3 to 5 feet subsiding to
2 to 4 feet. 
.monday...northwest winds 10 to 15 knots becoming north. waves
1 to 3 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 150150
glfle 
expires:202505150830;;525161

open lake forecast for lake erie
national weather service cleveland oh
950 pm edt wed may 14 2025

for waters beyond five nautical miles of shore on lake erie

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... 
weak low pressure of 29.70 inches will move east across lake erie
tonight. another low pressure 29.30 inches over the upper midwest
will move a warm front north thursday evening into the overnight 
hours followed by a cold front friday. a secondary cold front will
push east on saturday as a surface trough averaging 29.80 inches 
lingers across lake erie through sunday. high pressure 30.10 
inches returns for the start of next week.


lez164>167-150830-
the islands to vermilion oh beyond 5 nm off shoreline to us-
canadian border-
vermilion to avon point oh beyond 5 nm off shoreline to us-
canadian border-
avon point to willowick oh beyond 5 nm off shoreline to us-
canadian border-willowick to geneva-on-the-
lake oh beyond 5nm off shoreline to us-canadian border-
950 pm edt wed may 14 2025

.rest of tonight...southeast winds 5 to 10 knots. a chance of
showers with a slight chance of thunderstorms late this evening,
then a slight chance of showers after midnight. waves 2 feet or
less. 
.thursday...southeast winds 5 to 10 knots becoming east. a slight
chance of showers in the morning. waves 1 foot or less. 
.thursday night...east winds 5 to 15 knots becoming south 15 to
20 knots. a chance of thunderstorms in the evening, then showers
likely with a chance of thunderstorms overnight. waves 1 to
3 feet. 
.friday...southwest winds 5 to 15 knots. waves 1 to 3 feet. 
.friday night...south winds 10 to 15 knots becoming southwest
15 to 20 knots. a chance of showers and thunderstorms in the
evening, then showers likely with a chance of thunderstorms
overnight. waves 1 to 3 feet. 
.saturday...southwest winds 15 to 20 knots becoming west 10 to
15 knots. a chance of showers and thunderstorms during the day.
waves 2 to 4 feet building to 3 to 5 feet, then subsiding to 2 to
4 feet. 
.sunday...northwest winds 10 to 15 knots becoming north. waves
1 to 3 feet. 
.monday...north winds 10 to 15 knots becoming northeast. waves
1 to 2 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 150150
glfle 
expires:202505150830;;525162

open lake forecast for lake erie
national weather service cleveland oh
950 pm edt wed may 14 2025

for waters beyond five nautical miles of shore on lake erie

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... 
weak low pressure of 29.70 inches will move east across lake erie
tonight. another low pressure 29.30 inches over the upper midwest
will move a warm front north thursday evening into the overnight 
hours followed by a cold front friday. a secondary cold front will
push east on saturday as a surface trough averaging 29.80 inches 
lingers across lake erie through sunday. high pressure 30.10 
inches returns for the start of next week.


lez061-168-169-150830-
ripley to buffalo ny extending from 5nm off shoreline to us-
canadian border-geneva-on-the-
lake to conneaut oh beyond 5 nm off shoreline to us-
canadian border-
conneaut oh to ripley ny beyond 5 nm off shoreline to us-
canadian border-
950 pm edt wed may 14 2025

.rest of tonight...east winds 5 to 10 knots becoming southeast. a
slight chance of showers and thunderstorms late this evening,
then a slight chance of showers after midnight. waves 1 foot or
less. 
.thursday...southeast winds 10 knots or less becoming east. a
slight chance of showers. waves 1 foot or less. 
.thursday night...east winds 5 to 15 knots becoming south 15 to
20 knots. showers with a chance of thunderstorms overnight. waves
2 feet or less. 
.friday...southwest winds 10 to 15 knots. showers likely with a
chance of thunderstorms in the morning, then a chance of showers
in the afternoon. waves 1 to 3 feet. 
.friday night...south winds 5 to 15 knots. a chance of showers
and thunderstorms in the evening, then showers likely with a
chance of thunderstorms overnight. waves 1 to 2 feet. 
.saturday...southwest winds 10 to 15 knots becoming west. showers
likely with a chance of thunderstorms during the day. waves 1 to
3 feet building to 2 to 4 feet. 
.sunday...west winds 10 to 15 knots becoming northwest. waves
1 to 3 feet. 
.monday...north winds 5 to 10 knots. waves 2 feet or less. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 150150
glfle 
expires:202505150830;;525160

open lake forecast for lake erie
national weather service cleveland oh
950 pm edt wed may 14 2025

for waters beyond five nautical miles of shore on lake erie

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... 
weak low pressure of 29.70 inches will move east across lake erie
tonight. another low pressure 29.30 inches over the upper midwest
will move a warm front north thursday evening into the overnight 
hours followed by a cold front friday. a secondary cold front will
push east on saturday as a surface trough averaging 29.80 inches 
lingers across lake erie through sunday. high pressure 30.10 
inches returns for the start of next week.


lez162-163-150830-
detroit river lt. to maumee bay oh to reno beach oh beyond 5nm
offshoreline to us-canadian border-
reno beach to the islands oh beyond 5nm off shoreline to us-
canadian border-
950 pm edt wed may 14 2025

.rest of tonight...southeast winds 5 to 10 knots. a chance of
showers with a slight chance of thunderstorms late this evening,
then a slight chance of showers and thunderstorms after midnight.
a chance of showers and thunderstorms late. waves 1 foot or less.
.thursday...southeast winds 5 to 15 knots becoming east. a chance
of thunderstorms with a slight chance of showers early, then a
slight chance of showers late in the morning. waves 2 feet or
less. 
.thursday night...east winds 10 to 15 knots becoming southwest.
showers likely with a chance of thunderstorms. waves 1 to 2 feet.
.friday...southwest winds 10 to 15 knots becoming south. waves
2 feet or less. 
.friday night...south winds 10 to 15 knots becoming southwest.
showers likely with a chance of thunderstorms. waves 1 to 2 feet.
.saturday...southwest winds 15 to 20 knots becoming west 10 to
15 knots. a chance of showers during the day. waves 1 to 3 feet. 
.sunday...northwest winds 10 to 15 knots becoming north. waves
1 to 2 feet. 
.monday...north winds 10 to 15 knots becoming northeast. waves
1 to 2 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus63 kdtx 150157
glfsc 
expires:202505151000;;525311

lake st clair forecast
national weather service detroit/pontiac mi
957 pm edt wed may 14 2025

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 weak low pressure trough in the ohio valley
continues to support light easterly wind through thursday. a warm
front then passes over the great lakes thursday night into friday
morning, veering wind direction to the southwest while bringing 
increasing chances for strong thunderstorms.


lcz460-151000-
lake st clair-
957 pm edt wed may 14 2025

.rest of tonight...southeast winds 5 to 10 knots. partly cloudy.
waves 2 feet or less.
.thursday...southeast winds 5 to 10 knots. mostly cloudy in the
morning then clearing. waves 2 feet or less.
.thursday night...southeast winds 10 to 15 knots veering to the
south after midnight. showers and a chance of thunderstorms. waves 2
feet or less.
.friday...southwest winds 10 to 15 knots. sunny. waves 2 feet or
less.
.friday night...south winds 10 to 15 knots. light showers and a
chance of thunderstorms. waves 1 to 3 feet.
.saturday...west winds 15 to 20 knots. partly sunny with light
showers likely in the morning...then partly cloudy with a chance of
light showers in the afternoon and evening. waves 1 to 3 feet.
.sunday...north winds 10 to 15 knots. partly cloudy. waves 2 feet or
less.
.monday...northeast winds 10 to 15 knots. mostly clear. waves 2 feet
or less.

$$

fzus63 kdtx 150157
glflh 
expires:202505151000;;525273

open lake forecast for lake huron
national weather service detroit/pontiac mi
957 pm edt wed may 14 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 weak low pressure trough in the ohio valley
continues to support light easterly wind through thursday. areas
of fog develop tonight over lake huron. a warm front then passes
over the great lakes thursday night into friday morning, veering
wind direction to the southwest while bringing increasing chances
for strong thunderstorms.


lhz361-151000-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
957 pm edt wed may 14 2025

.rest of tonight...east winds 5 to 10 knots. areas of fog. waves
1 to 3 feet. 
.thursday...east winds 5 to 10 knots increasing to 10 to 15 knots
in the afternoon. areas of fog in the morning...then patchy fog
in the afternoon. waves 1 to 3 feet building to 2 to 4 feet late
in the afternoon. 
.thursday night...east winds 10 to 15 knots. a chance of showers
and thunderstorms in the evening...then showers and a chance of
thunderstorms after midnight. waves 2 to 4 feet. 
.friday...south winds 5 to 10 knots becoming southeast 10 to
15 knots early in the afternoon. waves 2 to 4 feet. 
.friday night...south winds 10 to 15 knots. a chance of showers
after midnight. waves 2 to 4 feet. 
.saturday...south winds 5 to 10 knots becoming west 10 to
15 knots late in the morning...then increasing to 15 to 20 knots
late in the afternoon. a chance of showers. waves 2 to 4 feet
subsiding to 1 to 3 feet late in the morning...then building to
3 to 5 feet late in the afternoon. 
.sunday...northwest winds 15 to 20 knots decreasing to 10 to
15 knots. waves 2 to 4 feet subsiding to 1 to 3 feet until early
morning. 
.monday...north winds 10 to 15 knots decreasing to 5 to 10 knots.
waves 2 feet or less. 


$$

fzus63 kdtx 150157
glflh 
expires:202505151000;;525274

open lake forecast for lake huron
national weather service detroit/pontiac mi
957 pm edt wed may 14 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 weak low pressure trough in the ohio valley
continues to support light easterly wind through thursday. areas
of fog develop tonight over lake huron. a warm front then passes
over the great lakes thursday night into friday morning, veering
wind direction to the southwest while bringing increasing chances
for strong thunderstorms.


lhz362-363-151000-
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-
957 pm edt wed may 14 2025

.rest of tonight...east winds 5 to 10 knots. areas of fog. waves
1 to 3 feet. 
.thursday...east winds 5 to 10 knots. areas of fog in the
morning. waves 1 to 3 feet. 
.thursday night...southeast winds 10 to 15 knots. a chance of
showers and thunderstorms in the evening...then showers likely
and a chance of thunderstorms after midnight. waves 1 to 3 feet
building to 2 to 4 feet after midnight. 
.friday...south winds 10 to 15 knots. waves 2 to 4 feet. 
.friday night...south winds 10 to 15 knots increasing to 15 to
20 knots in the late evening and early morning...then decreasing
to 10 to 15 knots after midnight. showers likely in the evening...
then a chance of showers and thunderstorms after midnight. waves
3 to 5 feet. 
.saturday...southwest winds 10 to 15 knots veering to the west
late in the afternoon...then increasing to 15 to 20 knots late in
the evening. a chance of showers. waves 3 to 5 feet. 
.sunday...northwest winds 15 to 20 knots. waves 3 to 5 feet. 
.monday...north winds 10 to 15 knots decreasing to 5 to 10 knots
until early morning. waves 2 to 4 feet subsiding to 1 to 3 feet
until early morning. 


$$

fzus63 kdtx 150157
glflh 
expires:202505151000;;525275

open lake forecast for lake huron
national weather service detroit/pontiac mi
957 pm edt wed may 14 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 weak low pressure trough in the ohio valley
continues to support light easterly wind through thursday. areas
of fog develop tonight over lake huron. a warm front then passes
over the great lakes thursday night into friday morning, veering
wind direction to the southwest while bringing increasing chances
for strong thunderstorms.


lhz462>464-151000-
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-
957 pm edt wed may 14 2025

.rest of tonight...southeast winds 5 to 10 knots. patchy fog.
waves 2 feet or less. 
.thursday...southeast winds 5 to 10 knots. patchy fog in the
morning. waves 2 feet or less. 
.thursday night...southeast winds 10 to 15 knots. a chance of
showers and thunderstorms in the evening...then showers likely
and a chance of thunderstorms after midnight. waves 1 to 3 feet
building to 2 to 4 feet after midnight. 
.friday...south winds 10 to 15 knots. waves 2 to 4 feet subsiding
to 1 to 3 feet in the late morning and afternoon. 
.friday night...south winds 10 to 15 knots. showers likely in the
evening...then showers likely and a chance of thunderstorms after
midnight. waves 2 to 4 feet. 
.saturday...southwest winds 10 to 15 knots veering to the west
late in the afternoon...then increasing to 15 to 20 knots late in
the evening. showers likely in the morning...then a chance of
showers late in the morning. waves 3 to 5 feet. 
.sunday...northwest winds 15 to 20 knots becoming north 10 to
15 knots until early morning. waves 3 to 5 feet. 
.monday...north winds 10 to 15 knots decreasing to 5 to 10 knots
in the late evening and early morning. waves 2 to 4 feet. 


$$

fzus63 kmkx 150222
glflm 
expires:202505150930;;526623

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
922 pm cdt wed may 14 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... 

dense fog is expected at times through thursday afternoon, as a 
moist airmass lingers over the chilly waters of lake michigan. the
dense fog advisory covers all open waters of the lake until 7 pm 
cdt thursday. 

winds will remain light and somewhat variable into tonight, due 
to a weak pressure gradient between developing low pressure 
around 29.2 inches just east of the rockies and exiting high 
pressure centered over the atlantic ocean. 

south to southeast winds will then increase on thursday, as low 
pressure lifts through the northern plains while deepening to 28.9
inches. while breezy at times, winds are expected to remain well 
below gale force, due to warmer air over the cold lake.
thunderstorms will be likely along a cold front thursday evening.
a few strong to severe storms with large hail will be possible. 
winds turn southwest behind the front. 

low pressure will then move through northern minnesota and 
northwest wisconsin friday, while weakening a bit to around 29.2 
inches. winds will remain southerly over the open waters. could 
see gusts approach gale force over the western shoreline areas,
ahead of the main cold front friday afternoon. an additional 
round of thunderstorms will be possible with this secondary front,
with a few strong to severe storms possible again, especially 
across the south half of the lake. 

breezy westerly winds are likely saturday behind the cold front, 
as low pressure passes by to the north. winds veer north saturday 
night into sunday, as high pressure builds in north of the region.


lmz261-362-364-366-563-565-567-868-150930-
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-
922 pm cdt wed may 14 2025

sheboygan wi to pentwater mi north...

...dense fog advisory in effect until 7 pm cdt thursday...

.rest of tonight...east winds 10 to 20 kt diminishing to 10 to
15 kt. widespread dense fog. slight chance of rain showers and
thunderstorms late this evening, then slight chance of rain
showers overnight. waves 1 to 2 ft. 
.thursday...east winds 10 to 15 kt increasing to 10 to 20 kt.
widespread dense fog in the morning, then patchy dense fog in the
afternoon. waves 1 to 3 ft. 
.thursday night...east winds 15 to 25 kt veering to south 10 to
20 kt. patchy fog. showers and thunderstorms in the evening, then
chance of showers and thunderstorms overnight. waves 3 to 5 ft. 
.friday...south winds 15 to 25 kt increasing to 30 kt. waves 4 to
6 ft occasionally to 8 ft building to 5 to 8 ft occasionally to
10 ft. 
.friday night...south winds 15 to 25 kt becoming southwest 10 to
20 kt. chance of rain showers. waves 5 to 8 ft occasionally to
10 ft subsiding to 4 to 7 ft occasionally to 9 ft. 
.saturday...west winds 10 to 20 kt increasing to 15 to 25 kt.
chance of rain showers in the morning. waves 3 to 5 ft. 
.saturday night...northwest winds to 30 kt becoming north 15 to
25 kt. waves 2 to 4 ft. 
.sunday...north winds 15 to 25 kt. waves 3 to 5 ft. 
.monday...northeast winds 10 to 20 kt. waves 1 to 3 ft.  

$$

fzus63 kmkx 150222
glflm 
expires:202505150930;;526624

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
922 pm cdt wed may 14 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... 

dense fog is expected at times through thursday afternoon, as a 
moist airmass lingers over the chilly waters of lake michigan. the
dense fog advisory covers all open waters of the lake until 7 pm 
cdt thursday. 

winds will remain light and somewhat variable into tonight, due 
to a weak pressure gradient between developing low pressure 
around 29.2 inches just east of the rockies and exiting high 
pressure centered over the atlantic ocean. 

south to southeast winds will then increase on thursday, as low 
pressure lifts through the northern plains while deepening to 28.9
inches. while breezy at times, winds are expected to remain well 
below gale force, due to warmer air over the cold lake.
thunderstorms will be likely along a cold front thursday evening.
a few strong to severe storms with large hail will be possible. 
winds turn southwest behind the front. 

low pressure will then move through northern minnesota and 
northwest wisconsin friday, while weakening a bit to around 29.2 
inches. winds will remain southerly over the open waters. could 
see gusts approach gale force over the western shoreline areas,
ahead of the main cold front friday afternoon. an additional 
round of thunderstorms will be possible with this secondary front,
with a few strong to severe storms possible again, especially 
across the south half of the lake. 

breezy westerly winds are likely saturday behind the cold front, 
as low pressure passes by to the north. winds veer north saturday 
night into sunday, as high pressure builds in north of the region.


lmz080-669-671-673-675-777-779-870-872-874-876-878-150930-
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-
922 pm cdt wed may 14 2025

sheboygan wi to pentwater mi south...

...dense fog advisory in effect until 7 pm cdt thursday...

.rest of tonight...east winds 5 to 10 kt increasing to 10 to
15 kt. widespread dense fog. waves 1 ft or less. 
.thursday...southeast winds 10 to 15 kt increasing to 15 to
25 kt. widespread dense fog in the morning, then patchy dense fog
in the afternoon. waves 1 to 2 ft building to 2 to 4 ft. 
.thursday night...southeast winds 15 to 25 kt becoming southwest
10 to 20 kt. chance of showers and thunderstorms in the evening.
waves 3 to 5 ft. 
.friday...south winds 15 to 25 kt increasing to 30 kt. waves 4 to
6 ft occasionally to 8 ft building to 5 to 8 ft occasionally to
10 ft. 
.friday night...southwest winds 15 to 25 kt diminishing to 10 to
20 kt. chance of showers and thunderstorms in the evening, then
chance of showers overnight. waves 5 to 8 ft occasionally to
10 ft subsiding to 4 to 6 ft occasionally to 8 ft. 
.saturday...west winds 15 to 25 kt. waves 3 to 5 ft. 
.saturday night...northwest winds 10 to 20 kt becoming north.
waves 3 to 5 ft. 
.sunday...north winds 10 to 20 kt increasing to 15 to 25 kt.
waves 3 to 5 ft. 
.monday...northeast winds 10 to 20 kt. waves 2 to 4 ft.  

$$

fzus63 kmqt 150202
glfls 
expires:202505150800;;525598

open lake forecast for lake superior
national weather service marquette mi
1001 pm edt wed may 14 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...weak 29.8 inch ridge remains over lake superior through 
tonight as 30.2 inch high pressure moving over hudson bay is opposed 
by 29.2 inch low pressure over the central plains. through thursday, 
this low moves into the dakotas, deepening to 29.1 inches as it 
pushes a 29.4 inch trough over the western end of lake superior. 
friday, the low slowly wobbles east, weakening to 29.3 inches as it 
extends from northern minnesota to northern ontario. saturday, the 
low then quickly ejects northeast to quebec as 30.3 inch high 
pressure moves over northern manitoba. by early monday, this high 
will strengthen to 30.5 inches over far-northern ontario, extending 
30.3 inch ridging over the lake.



lsz264-150800-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
1001 pm edt wed may 14 2025

...dense fog advisory in effect until 2 am edt thursday...

.rest of tonight...east winds 5 to 15 knots veering southeast
late. patchy fog by midnight. areas of dense fog after midnight.
isolated thunderstorms by midnight. isolated rain showers. waves
1 to 3 feet. 
.thursday...east winds 5 to 15 knots increasing to 15 to
25 knots. a slight chance of rain showers through early
afternoon. areas of fog through early afternoon, then patchy
dense fog by mid afternoon. waves building to 3 to 5 feet
occasionally to 7 feet. 
.thursday night...east winds 15 to 25 knots veering southeast
after midnight, then becoming south 10 to 20 knots late. patchy
fog through midnight. a chance of showers and thunderstorms.
waves building to 4 to 7 feet occasionally to 9 feet, then
subsiding to 3 to 6 feet occasionally to 8 feet. 
.friday...south winds 5 to 15 knots backing southeast by mid
afternoon. a chance of showers by mid afternoon. waves subsiding
to 1 to 3 feet. 
.friday night...southeast winds 5 to 15 knots becoming north
10 to 20 knots after midnight. a chance of rain showers. waves
subsiding to calm to 2 feet, then building to 1 to 3 feet. 
.saturday...north winds 15 to 25 knots increasing to 20 to
30 knots by mid afternoon. waves building to 3 to 6 feet
occasionally to 8 feet. 
.saturday night...north winds 20 to 30 knots diminishing to 15 to
25 knots after midnight. waves subsiding to 3 to 5 feet
occasionally to 7 feet. 
.sunday...north winds 15 to 25 knots becoming northeast 5 to
15 knots. waves subsiding to calm to 2 feet. 
.monday...east winds 10 to 20 knots. waves building to 1 to
3 feet, then subsiding to calm to 2 feet. 

$$

fzus63 kmqt 150202
glfls 
expires:202505150800;;525599

open lake forecast for lake superior
national weather service marquette mi
1001 pm edt wed may 14 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...weak 29.8 inch ridge remains over lake superior through 
tonight as 30.2 inch high pressure moving over hudson bay is opposed 
by 29.2 inch low pressure over the central plains. through thursday, 
this low moves into the dakotas, deepening to 29.1 inches as it 
pushes a 29.4 inch trough over the western end of lake superior. 
friday, the low slowly wobbles east, weakening to 29.3 inches as it 
extends from northern minnesota to northern ontario. saturday, the 
low then quickly ejects northeast to quebec as 30.3 inch high 
pressure moves over northern manitoba. by early monday, this high 
will strengthen to 30.5 inches over far-northern ontario, extending 
30.3 inch ridging over the lake.



lsz265-150800-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
1001 pm edt wed may 14 2025

...dense fog advisory in effect until 2 am edt thursday...

.rest of tonight...southeast winds 10 to 20 knots. patchy fog by
midnight. areas of dense fog after midnight. isolated showers and
thunderstorms. waves 1 to 3 feet subsiding to calm to 2 feet. 
.thursday...southeast winds 10 to 20 knots increasing to 15 to
25 knots in the afternoon. areas of dense fog through early
afternoon, then patchy fog by mid afternoon. waves building to
2 to 4 feet. 
.thursday night...southeast winds 15 to 25 knots becoming south
10 to 20 knots late. patchy fog through midnight. a chance of
showers and thunderstorms. waves building to 3 to 5 feet
occasionally to 7 feet, then subsiding to 2 to 4 feet. 
.friday...south winds 15 to 25 knots. a chance of showers by mid
afternoon. waves subsiding to calm to 2 feet. 
.friday night...south winds 10 to 20 knots veering west after
midnight. a chance of rain showers through midnight, then rain
showers likely after midnight. waves calm to 2 feet. 
.saturday...northwest winds 15 to 25 knots. a chance of rain
showers. waves building to 3 to 5 feet occasionally to 7 feet. 
.saturday night...north winds 15 to 25 knots. waves 3 to 5 feet
occasionally to 7 feet. 
.sunday...north winds 15 to 25 knots diminishing to 10 to
20 knots. waves subsiding to calm to 2 feet. 
.monday...east winds 10 to 20 knots. waves calm to 2 feet. 

$$

fzus63 kmqt 150202
glfls 
expires:202505150800;;525596

open lake forecast for lake superior
national weather service marquette mi
1001 pm edt wed may 14 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...weak 29.8 inch ridge remains over lake superior through 
tonight as 30.2 inch high pressure moving over hudson bay is opposed 
by 29.2 inch low pressure over the central plains. through thursday, 
this low moves into the dakotas, deepening to 29.1 inches as it 
pushes a 29.4 inch trough over the western end of lake superior. 
friday, the low slowly wobbles east, weakening to 29.3 inches as it 
extends from northern minnesota to northern ontario. saturday, the 
low then quickly ejects northeast to quebec as 30.3 inch high 
pressure moves over northern manitoba. by early monday, this high 
will strengthen to 30.5 inches over far-northern ontario, extending 
30.3 inch ridging over the lake.



lsz162-150800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1001 pm edt wed may 14 2025 /901 pm cdt wed may 14 2025/

...dense fog advisory in effect until 2 am edt /1 am cdt/
thursday...

.rest of tonight...northeast winds 5 to 15 knots. areas of dense
fog. scattered rain showers and isolated thunderstorms. waves
2 to 4 feet subsiding to 1 to 3 feet. 
.thursday...northeast winds 10 to 20 knots increasing to 20 to
30 knots. patchy fog. a chance of rain showers. a slight chance
of thunderstorms by mid afternoon. waves building to 4 to 7 feet
occasionally to 9 feet. 
.thursday night...east winds 20 to 30 knots becoming southeast
10 to 20 knots after midnight. showers and a chance of
thunderstorms through midnight, then a slight chance of showers
after midnight. waves subsiding to 2 to 4 feet. 
.friday...southeast winds 10 to 20 knots veering south by mid
afternoon. a chance of showers through early afternoon, then
showers likely by mid afternoon. waves subsiding to calm to
2 feet. 
.friday night...southwest winds 10 to 20 knots veering northwest
after midnight. showers likely. waves calm to 2 feet. 
.saturday...northwest winds 15 to 25 knots becoming north 10 to
20 knots by mid afternoon. a chance of showers. waves calm to
2 feet. 
.saturday night...north winds 10 to 20 knots. waves calm to
2 feet. 
.sunday...east winds 10 to 20 knots becoming northeast 5 to
15 knots. waves building to 1 to 3 feet, then subsiding to calm
to 2 feet. 
.monday...east winds 15 to 25 knots. waves building to 3 to
6 feet occasionally to 8 feet. 

$$

fzus63 kmqt 150202
glfls 
expires:202505150800;;525601

open lake forecast for lake superior
national weather service marquette mi
1001 pm edt wed may 14 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...weak 29.8 inch ridge remains over lake superior through 
tonight as 30.2 inch high pressure moving over hudson bay is opposed 
by 29.2 inch low pressure over the central plains. through thursday, 
this low moves into the dakotas, deepening to 29.1 inches as it 
pushes a 29.4 inch trough over the western end of lake superior. 
friday, the low slowly wobbles east, weakening to 29.3 inches as it 
extends from northern minnesota to northern ontario. saturday, the 
low then quickly ejects northeast to quebec as 30.3 inch high 
pressure moves over northern manitoba. by early monday, this high 
will strengthen to 30.5 inches over far-northern ontario, extending 
30.3 inch ridging over the lake.



lsz267-150800-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
1001 pm edt wed may 14 2025

...dense fog advisory in effect until 2 am edt thursday...

.rest of tonight...southeast winds 10 to 20 knots. areas of dense
fog. isolated thunderstorms by midnight. isolated showers. waves
1 to 3 feet subsiding to calm to 2 feet. 
.thursday...southeast winds 10 to 20 knots increasing to 15 to
25 knots late. a slight chance of showers through early
afternoon. areas of fog. waves building to 2 to 4 feet. 
.thursday night...southeast winds 20 to 30 knots diminishing to
15 to 25 knots late. patchy fog through midnight. showers likely
through midnight. a chance of thunderstorms. a chance of showers
after midnight. waves building to 3 to 6 feet occasionally to
8 feet, then subsiding to 2 to 4 feet. 
.friday...south winds 10 to 20 knots increasing to 15 to 25 knots
by mid afternoon. a slight chance of showers. waves subsiding to
1 to 3 feet, then building to 2 to 4 feet. 
.friday night...south winds 10 to 20 knots. a slight chance of
thunderstorms through midnight. a chance of rain showers. waves
subsiding to calm to 2 feet. 
.saturday...west winds 10 to 20 knots becoming northwest 15 to
25 knots by mid afternoon. a chance of rain showers. waves
building to 3 to 6 feet occasionally to 8 feet. 
.saturday night...north winds 15 to 25 knots. waves building to
4 to 7 feet occasionally to 9 feet, then subsiding to 3 to 6 feet
occasionally to 8 feet. 
.sunday...north winds 15 to 25 knots diminishing to 10 to
20 knots. waves subsiding to 1 to 3 feet. 
.monday...north winds 10 to 20 knots veering east. waves
subsiding to calm to 2 feet, then building to 1 to 3 feet. 

$$

fzus63 kmqt 150202
glfls 
expires:202505150800;;525600

open lake forecast for lake superior
national weather service marquette mi
1001 pm edt wed may 14 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...weak 29.8 inch ridge remains over lake superior through 
tonight as 30.2 inch high pressure moving over hudson bay is opposed 
by 29.2 inch low pressure over the central plains. through thursday, 
this low moves into the dakotas, deepening to 29.1 inches as it 
pushes a 29.4 inch trough over the western end of lake superior. 
friday, the low slowly wobbles east, weakening to 29.3 inches as it 
extends from northern minnesota to northern ontario. saturday, the 
low then quickly ejects northeast to quebec as 30.3 inch high 
pressure moves over northern manitoba. by early monday, this high 
will strengthen to 30.5 inches over far-northern ontario, extending 
30.3 inch ridging over the lake.



lsz266-150800-
lake superior east of a line from manitou island to marquette mi
and west of a line from grand marais mi to the us/canadian border
beyond 5nm from shore-
1001 pm edt wed may 14 2025

...dense fog advisory in effect until 2 am edt thursday...

.rest of tonight...southeast winds 10 to 20 knots. areas of dense
fog. isolated showers. waves 2 to 4 feet subsiding to 1 to
3 feet. 
.thursday...southeast winds 10 to 20 knots increasing to 15 to
25 knots late. areas of dense fog through early afternoon, then
patchy fog by mid afternoon. waves building to 2 to 4 feet. 
.thursday night...southeast winds 15 to 25 knots veering south
late. patchy fog through midnight. a chance of showers and
thunderstorms. waves building to 4 to 7 feet occasionally to
9 feet, then subsiding to 3 to 5 feet occasionally to 7 feet. 
.friday...south winds 15 to 25 knots diminishing to 10 to
20 knots by mid afternoon. a chance of showers. waves subsiding
to 1 to 3 feet. 
.friday night...south winds 10 to 20 knots veering southwest
after midnight. a chance of rain showers. waves subsiding to calm
to 2 feet. 
.saturday...northwest winds 15 to 25 knots. a chance of rain
showers. waves building to 4 to 7 feet occasionally to 9 feet. 
.saturday night...north winds 20 to 30 knots diminishing to 15 to
25 knots after midnight. waves subsiding to 3 to 6 feet
occasionally to 8 feet. 
.sunday...north winds 15 to 25 knots becoming northeast 10 to
20 knots. waves subsiding to 1 to 3 feet. 
.monday...northeast winds 10 to 20 knots veering east. waves
subsiding to calm to 2 feet, then building to 1 to 3 feet. 

$$

fzus63 kmqt 150202
glfls 
expires:202505150800;;525597

open lake forecast for lake superior
national weather service marquette mi
1001 pm edt wed may 14 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...weak 29.8 inch ridge remains over lake superior through 
tonight as 30.2 inch high pressure moving over hudson bay is opposed 
by 29.2 inch low pressure over the central plains. through thursday, 
this low moves into the dakotas, deepening to 29.1 inches as it 
pushes a 29.4 inch trough over the western end of lake superior. 
friday, the low slowly wobbles east, weakening to 29.3 inches as it 
extends from northern minnesota to northern ontario. saturday, the 
low then quickly ejects northeast to quebec as 30.3 inch high 
pressure moves over northern manitoba. by early monday, this high 
will strengthen to 30.5 inches over far-northern ontario, extending 
30.3 inch ridging over the lake.



lsz263-150800-
lake superior from saxon harbor wi to upper entrance to portage
canal mi 5nm off shore to the us/canadian border including isle
royale national park-
1001 pm edt wed may 14 2025

...dense fog advisory in effect until 2 am edt thursday...

.rest of tonight...northeast winds 5 to 15 knots veering east
late. patchy fog by midnight. areas of dense fog after midnight.
scattered showers and thunderstorms. waves 1 to 3 feet. 
.thursday...east winds 5 to 15 knots increasing to 15 to
25 knots. patchy fog through early afternoon. a chance of rain
showers. a slight chance of thunderstorms by mid afternoon. waves
building to 3 to 5 feet occasionally to 7 feet. 
.thursday night...east winds 15 to 25 knots veering south after
midnight, then diminishing to 10 to 20 knots late. patchy dense
fog through midnight. showers likely and a chance of
thunderstorms through midnight, then a slight chance of showers
after midnight. waves building to 3 to 6 feet occasionally to
8 feet. 
.friday...south winds 5 to 15 knots. a chance of showers. waves
subsiding to calm to 2 feet. 
.friday night...south winds 5 to 15 knots becoming northwest
10 to 20 knots after midnight. rain showers likely. waves
building to 1 to 3 feet. 
.saturday...northwest winds 15 to 25 knots becoming north 20 to
30 knots by mid afternoon. a chance of rain showers. waves
building to 3 to 5 feet occasionally to 7 feet. 
.saturday night...north winds 20 to 30 knots diminishing to 15 to
25 knots after midnight. waves subsiding to 2 to 4 feet. 
.sunday...northeast winds 15 to 25 knots diminishing to 5 to
15 knots. waves subsiding to calm to 2 feet. 
.monday...east winds 15 to 25 knots. waves building to 3 to
5 feet occasionally to 7 feet, then subsiding to 1 to 3 feet. 

$$