fzus61 kbuf 220803
glflo 
expires:202604221500;;787744

open lake forecast for lake ontario
national weather service buffalo ny
403 am edt wed apr 22 2026

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 weak 29.4 inch low will cross the area tonight, and in 
the process drag an attendant cold front across the lake. a 30.1 
inch high will then build across the great lakes region wednesday 
and thursday. a warm front will approach the lake by friday. a 29.7 
inch low will move southwest of the lake on saturday, followed by a 
30.2 inch high building across the lake saturday night and sunday.


loz063>065-221500-
lake ontario open waters from hamlin beach to the saint lawrence
river-
403 am edt wed apr 22 2026

.today...southeast winds 5 to 15 knots becoming west less than
10 knots. waves 2 feet or less. 
.tonight...west winds 10 knots or less becoming north. waves
1 foot or less. 
.thursday...north winds 5 to 10 knots becoming southwest. waves
1 foot or less. 
.thursday night...southwest winds 10 knots or less becoming
northeast. waves 1 foot or less. 
.friday...northeast winds 5 to 15 knots becoming east. waves 1 to
3 feet. 
.saturday...east winds 15 to 20 knots becoming southeast 10 to
15 knots. a chance of showers. waves 2 to 4 feet subsiding to
1 to 3 feet. 
.sunday...west winds 5 to 15 knots becoming northeast 10 knots or
less. waves 2 feet or less. 

$$

fzus61 kbuf 220803
glflo 
expires:202604221500;;787743

open lake forecast for lake ontario
national weather service buffalo ny
403 am edt wed apr 22 2026

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 weak 29.4 inch low will cross the area tonight, and in 
the process drag an attendant cold front across the lake. a 30.1 
inch high will then build across the great lakes region wednesday 
and thursday. a warm front will approach the lake by friday. a 29.7 
inch low will move southwest of the lake on saturday, followed by a 
30.2 inch high building across the lake saturday night and sunday.


loz062-221500-
lake ontario open waters from the niagara river to hamlin beach-
403 am edt wed apr 22 2026

.today...north winds less than 10 knots becoming southwest. waves
1 foot or less. 
.tonight...west winds 10 knots or less becoming north. waves
1 foot or less. 
.thursday...north winds less than 10 knots becoming southeast.
waves 1 foot or less. 
.thursday night...east winds 10 knots or less increasing to 10 to
15 knots. waves 2 feet or less. 
.friday...east winds 15 to 20 knots. a chance of rain showers
friday night. waves 1 to 3 feet building to 2 to 4 feet. 
.saturday...east winds 15 to 20 knots becoming northeast 10 to
15 knots. a chance of showers. waves 3 to 6 feet subsiding to
2 to 3 feet. 
.sunday...northeast winds 5 to 15 knots becoming east. waves 1 to
3 feet subsiding to 1 foot or less. 

$$

fzus61 kcle 220808
glfle 
expires:202604221430;;788197

open lake forecast for lake erie
national weather service cleveland oh
408 am edt wed apr 22 2026

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...
a weak cold front will slowly move south of the lake today. high
pressure 30.10 inches will build from the north tonight and move
across the area on thursday. a warm front will cross the lake 
thursday night. low pressure 29.40 inches will reach the northwest
great lakes on friday and slide southeast. the low will cross the
lake on saturday morning at 29.70 inches. high pressure 30.10
inches will build into the region on saturday night into sunday.


lez165>167-221430-
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-
408 am edt wed apr 22 2026

.today...west winds 10 knots or less. waves 2 feet or less. 
.tonight...west winds less than 10 knots becoming northeast.
waves 1 foot or less. 
.thursday...east winds 10 knots or less becoming northeast. waves
1 foot or less. 
.thursday night...east winds 5 to 10 knots becoming southeast.
waves 1 foot or less. 
.friday...east winds 5 to 15 knots. showers likely friday night.
waves 1 to 3 feet. 
.saturday...north winds 10 to 15 knots becoming northeast. a
chance of showers during the day. waves 1 to 2 feet. 
.sunday...northeast winds 5 to 15 knots becoming east. waves 1 to
2 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 220808
glfle 
expires:202604221430;;788198

open lake forecast for lake erie
national weather service cleveland oh
408 am edt wed apr 22 2026

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...
a weak cold front will slowly move south of the lake today. high
pressure 30.10 inches will build from the north tonight and move
across the area on thursday. a warm front will cross the lake 
thursday night. low pressure 29.40 inches will reach the northwest
great lakes on friday and slide southeast. the low will cross the
lake on saturday morning at 29.70 inches. high pressure 30.10
inches will build into the region on saturday night into sunday.


lez061-168-169-221430-
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-
408 am edt wed apr 22 2026

.today...west winds 10 knots or less becoming southwest. waves
2 feet or less. 
.tonight...west winds less than 10 knots. waves 1 foot or less. 
.thursday...northeast winds less than 10 knots. waves 1 foot or
less. 
.thursday night...east winds 5 to 10 knots. waves 1 foot or less.
.friday...northeast winds 5 to 15 knots. showers likely friday
night. waves 1 to 3 feet. 
.saturday...northeast winds 5 to 10 knots. showers likely during
the day. waves 2 feet or less. 
.sunday...north winds 10 knots or less becoming east. waves
1 foot or less. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 220808
glfle 
expires:202604221430;;788196

open lake forecast for lake erie
national weather service cleveland oh
408 am edt wed apr 22 2026

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...
a weak cold front will slowly move south of the lake today. high
pressure 30.10 inches will build from the north tonight and move
across the area on thursday. a warm front will cross the lake 
thursday night. low pressure 29.40 inches will reach the northwest
great lakes on friday and slide southeast. the low will cross the
lake on saturday morning at 29.70 inches. high pressure 30.10
inches will build into the region on saturday night into sunday.


lez162>164-221430-
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-
the islands to vermilion oh beyond 5 nm off shoreline to us-
canadian border-
408 am edt wed apr 22 2026

.today...west winds 10 knots or less becoming southeast. waves
1 foot or less. 
.tonight...east winds 10 knots or less. waves 1 foot or less. 
.thursday...east winds 5 to 10 knots. waves 1 foot or less. 
.thursday night...east winds 5 to 10 knots becoming south. waves
1 foot or less. 
.friday...southeast winds 5 to 15 knots becoming northeast. a
chance of showers during the day, then showers likely with a
chance of thunderstorms friday night. waves 2 feet or less. 
.saturday...north winds 10 to 15 knots becoming northeast. a
chance of showers during the day. waves 1 to 2 feet. 
.sunday...northeast winds 10 to 15 knots becoming east. waves
2 feet or less. 

winds and waves higher in and near thunderstorms.

$$

fzus63 kdtx 220756
glfsc 
expires:202604221600;;787397

lake st clair forecast
national weather service detroit/pontiac mi
356 am edt wed apr 22 2026

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 cold front settles south of lake erie today morning
with high pressure filling in behind it. a warm front then slowly
lifts into the area late thursday into friday as the parent low 
pressure stalls over the northern plains. a secondary low will 
develop along the front and track across the southern great lakes 
friday night.


lcz460-221600-
lake st clair-
356 am edt wed apr 22 2026

.today...north winds 5 to 10 knots in the morning becoming light and
variable...then becoming east 5 to 10 knots late in the afternoon.
sunny. waves 2 feet or less.
.tonight...northeast winds 5 to 10 knots becoming light and
variable. clear. waves 2 feet or less.
.thursday...southeast winds 5 to 10 knots. mostly sunny. waves 2
feet or less.
.thursday night...southeast winds 5 to 10 knots. mostly clear. waves
2 feet or less.
.friday...southeast winds 10 to 15 knots. partly sunny in the
morning...then a chance of light showers in the afternoon. mostly
cloudy with light showers likely in the evening. waves 2 feet or
less.
.saturday...north winds 10 to 15 knots. partly cloudy. light showers
likely. waves 2 feet or less.
.sunday...east winds 10 to 15 knots. mostly clear. waves 2 feet or
less.

$$

fzus63 kdtx 220756
glflh 
expires:202604221600;;787383

open lake forecast for lake huron
national weather service detroit/pontiac mi
356 am edt wed apr 22 2026

for waters beyond five nautical miles off shore on lake huron

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

.synopsis...a cold front settles south of lake erie today morning
with high pressure filling in behind it. a warm front then slowly
lifts into the area late thursday into friday as the parent low 
pressure stalls over the northern plains. a secondary low will 
develop along the front and track across the southern great lakes 
friday night.


lhz361>363-221600-
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-
lake huron from sturgeon point to alabaster mi beyond 5nm off
shore-
356 am edt wed apr 22 2026

.today...north winds 5 to 10 knots until late afternoon becoming
light and variable. waves 2 feet or less. 
.tonight...light and variable winds. waves 2 feet or less. 
.thursday...east winds 5 to 10 knots increasing to 10 to 15 knots
in the late morning and afternoon. waves 1 to 3 feet building to
3 to 5 feet in the late morning and afternoon. 
.thursday night...east winds 10 to 15 knots increasing to 15 to
20 knots in the late evening and overnight. waves 4 to 6 feet. 
.friday...east winds 15 to 20 knots. a chance of showers late in
the afternoon. showers likely late in the evening. waves 6 to
9 feet. waves occasionally around 12 feet. 
.saturday...northeast winds 10 to 15 knots backing to the north
early in the evening...then decreasing to 5 to 10 knots by
midnight. a chance of showers early in the morning. waves 4 to
6 feet subsiding to 2 to 4 feet by midnight. waves occasionally
around 8 feet. 
.sunday...north winds 5 to 10 knots. waves 2 to 4 feet subsiding
to 1 to 3 feet. 


$$

fzus63 kdtx 220756
glflh 
expires:202604221600;;787384

open lake forecast for lake huron
national weather service detroit/pontiac mi
356 am edt wed apr 22 2026

for waters beyond five nautical miles off shore on lake huron

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

.synopsis...a cold front settles south of lake erie today morning
with high pressure filling in behind it. a warm front then slowly
lifts into the area late thursday into friday as the parent low 
pressure stalls over the northern plains. a secondary low will 
develop along the front and track across the southern great lakes 
friday night.


lhz462>464-221600-
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-
356 am edt wed apr 22 2026

.today...north winds 5 to 10 knots. waves 2 feet or less. 
.tonight...north winds 5 to 10 knots early in the evening
becoming light and variable. waves 2 feet or less. 
.thursday...east winds 5 to 10 knots. waves 2 feet or less. 
.thursday night...east winds 5 to 10 knots becoming southeast
10 to 15 knots after midnight. waves 1 to 3 feet. 
.friday...southeast winds 10 to 15 knots increasing to 15 to
20 knots late in the evening. showers likely late in the evening.
waves 1 to 3 feet building to 3 to 5 feet late in the afternoon. 
.saturday...east winds 10 to 15 knots backing to the north until
early evening...then decreasing to 5 to 10 knots by midnight.
showers likely early in the morning...then a chance of showers in
the late morning and early afternoon. waves 3 to 5 feet subsiding
to 1 to 3 feet . 
.sunday...north winds 5 to 10 knots. waves 1 to 3 feet. 


$$

fzus63 kmkx 220801
glflm 
expires:202604221545;;787536

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
301 am cdt wed apr 22 2026

for waters beyond five nautical miles of shore on lake michigan.

waves are provided as a range of significant wave heights, which
is the average of the highest 1/3 of the wave, along with the
average height of the highest 10% of the waves which will
occasionally be encountered.

.synopsis...

a weak surface boundary will continue to work it's way southward
across the southern quarter of lake michigan early this morning, 
with light and variable winds over southern portions of the lake 
and a northeast breeze over the rest. the stagnant air ahead of 
this boundary over southern lake mi (mainly along and south of a 
milwaukee wi to whitehall mi line) may cool to saturation this 
morning, with areas of fog possible. light winds, predominantly
out of the northeast, then continue through the rest of today.

winds veer southeast and accelerate tonight through friday 
morning as 29.2 inch low pressure develops over the northern great
plains and slowly tracks eastward. though winds will be breezy
(particularly thursday afternoon and onwards), gales are not
anticipated at this time. some ~30 kt easterly winds may occur
over the northern tip of the lake due to a surface ridge of high 
pressure in southeastern ontario canada sharpening the pressure 
gradient. 

the low will pull a cold front across lake michigan friday 
afternoon and evening, resulting in a breezy north-northwest wind
shift. showers and thunderstorms are expected late thursday night
through friday, both ahead of and along the front. severe weather
is not anticipated at this time.

northerly winds will continue through the weekend across lake 
michigan. 29.4 inch low pressure is forecast to track 
northeastward from the central great plains (sunday night) near or
over lake michigan (monday night), with gusty east to southeast 
winds ahead of it's arrival and gusty west or northwest winds 
behind it (into tuesday). not seeing widespread gale potential 
with this system, though trends will be monitored.


lmz080-669-671-673-675-777-779-870-872-874-876-878-221545-
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-
301 am cdt wed apr 22 2026

sheboygan wi to pentwater mi south...

.today...north winds 10 to 15 kt diminishing to 5 to 10 kt. areas
of dense fog possible, mainly in the morning. waves 1 to 2 ft. 
.tonight...northeast winds 5 to 10 kt veering to southeast. waves
1 to 2 ft. 
.thursday...south winds 10 to 20 kt. waves 2 to 4 ft. 
.thursday night...south winds 10 to 20 kt. waves 4 to 6 ft
occasionally to 8 ft. 
.friday...south winds 10 to 20 kt. rain showers likely. waves
4 to 6 ft occasionally to 8 ft. 
.friday night...west winds 10 to 15 kt becoming northwest 10 to
20 kt. chance of rain showers. waves 3 to 5 ft. 
.saturday...north winds 10 to 20 kt. waves 2 to 4 ft. 
.sunday...east winds 5 to 10 kt becoming northeast 10 to 15 kt.
waves 1 to 2 ft.  

$$

fzus63 kmkx 220801
glflm 
expires:202604221545;;787535

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
301 am cdt wed apr 22 2026

for waters beyond five nautical miles of shore on lake michigan.

waves are provided as a range of significant wave heights, which
is the average of the highest 1/3 of the wave, along with the
average height of the highest 10% of the waves which will
occasionally be encountered.

.synopsis...

a weak surface boundary will continue to work it's way southward
across the southern quarter of lake michigan early this morning, 
with light and variable winds over southern portions of the lake 
and a northeast breeze over the rest. the stagnant air ahead of 
this boundary over southern lake mi (mainly along and south of a 
milwaukee wi to whitehall mi line) may cool to saturation this 
morning, with areas of fog possible. light winds, predominantly
out of the northeast, then continue through the rest of today.

winds veer southeast and accelerate tonight through friday 
morning as 29.2 inch low pressure develops over the northern great
plains and slowly tracks eastward. though winds will be breezy
(particularly thursday afternoon and onwards), gales are not
anticipated at this time. some ~30 kt easterly winds may occur
over the northern tip of the lake due to a surface ridge of high 
pressure in southeastern ontario canada sharpening the pressure 
gradient. 

the low will pull a cold front across lake michigan friday 
afternoon and evening, resulting in a breezy north-northwest wind
shift. showers and thunderstorms are expected late thursday night
through friday, both ahead of and along the front. severe weather
is not anticipated at this time.

northerly winds will continue through the weekend across lake 
michigan. 29.4 inch low pressure is forecast to track 
northeastward from the central great plains (sunday night) near or
over lake michigan (monday night), with gusty east to southeast 
winds ahead of it's arrival and gusty west or northwest winds 
behind it (into tuesday). not seeing widespread gale potential 
with this system, though trends will be monitored.


lmz261-362-364-366-563-565-567-868-221545-
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-
301 am cdt wed apr 22 2026

sheboygan wi to pentwater mi north...

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

$$

fzus63 kmqt 220801
glfls 
expires:202604222000;;787515

open lake forecast for lake superior
national weather service marquette mi
400 am edt wed apr 22 2026

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

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

.synopsis...

30.0 inch high pressure remains over lake superior today. meanwhile, 
a 29.4 inch low over montana deepens to 29.1 inches by this evening 
before moving into southern manitoba by thursday evening. this sends 
29.6 to 29.7 inch troughing over lake superior thursday night into 
friday. as the parent low weakens to 29.9 inches saturday and 
remnant troughing moves south of the lower great lakes at 29.7 
inches, 30.0 inch ridging will build over lake superior this 
weekend. by late sunday, this ridge builds to 30.2 inches. 
meanwhile, a 29.3 inch colorado low develops, moving towards the 
upper midwest by monday.



lsz162-222000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
400 am edt wed apr 22 2026 /300 am cdt wed apr 22 2026/

.early this morning...east winds 5 to 15 knots. waves calm to
2 feet. 
.today...east winds 5 to 15 knots becoming northeast 10 to
20 knots late. waves calm to 2 feet. 
.tonight...northeast winds 10 to 20 knots veering east late. a
chance of rain showers and a slight chance of thunderstorms.
waves building to 2 to 4 feet. 
.thursday...east winds 10 to 20 knots increasing to 15 to
25 knots in the afternoon, then backing northeast late. a chance
of rain showers and a slight chance of thunderstorms by mid
afternoon. waves building to 3 to 6 feet occasionally to 8 feet. 
.thursday night...northeast winds 15 to 25 knots becoming east
10 to 20 knots after midnight. rain showers and a chance of
thunderstorms. waves building to 4 to 8 feet occasionally to
10 feet. 
.friday...northeast winds 10 to 20 knots backing northwest by mid
afternoon. rain showers likely through early afternoon, then a
chance of rain showers by mid afternoon. waves subsiding to 3 to
5 feet occasionally to 7 feet. 
.friday night...northwest winds 10 to 20 knots. a chance of rain
showers. waves subsiding to calm to 2 feet. 
.saturday...west winds 10 to 20 knots becoming northeast 5 to
15 knots. waves calm to 2 feet. 
.sunday...east winds 5 to 15 knots increasing to 15 to 25 knots.
waves building to 2 to 4 feet. 

$$

fzus63 kmqt 220801
glfls 
expires:202604222000;;787516

open lake forecast for lake superior
national weather service marquette mi
400 am edt wed apr 22 2026

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

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

.synopsis...

30.0 inch high pressure remains over lake superior today. meanwhile, 
a 29.4 inch low over montana deepens to 29.1 inches by this evening 
before moving into southern manitoba by thursday evening. this sends 
29.6 to 29.7 inch troughing over lake superior thursday night into 
friday. as the parent low weakens to 29.9 inches saturday and 
remnant troughing moves south of the lower great lakes at 29.7 
inches, 30.0 inch ridging will build over lake superior this 
weekend. by late sunday, this ridge builds to 30.2 inches. 
meanwhile, a 29.3 inch colorado low develops, moving towards the 
upper midwest by monday.



lsz263-222000-
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-
400 am edt wed apr 22 2026

.early this morning...southeast winds less than 10 knots. waves
calm to 2 feet. 
.today...southeast winds less than 10 knots becoming east 5 to
15 knots in the afternoon. waves calm to 2 feet. 
.tonight...east winds 10 to 20 knots veering southeast after
midnight. a slight chance of showers and thunderstorms after
midnight. waves building to 3 to 5 feet occasionally to 7 feet. 
.thursday...east winds 15 to 25 knots increasing to 20 to
30 knots late. a slight chance of rain showers by mid afternoon.
waves building to 7 to 10 feet occasionally to 13 feet. 
.thursday night...east gales to 35 knots. rain showers likely and
a chance of thunderstorms. waves building to 8 to 12 feet
occasionally to 15 feet. 
.friday...east winds 20 to 30 knots becoming west 15 to 25 knots
by mid afternoon. rain showers likely. waves subsiding to 5 to
8 feet occasionally to 10 feet. 
.friday night...west winds 10 to 20 knots diminishing to 5 to
15 knots after midnight. a chance of rain showers. waves
subsiding to 1 to 3 feet. 
.saturday...west winds 5 to 15 knots backing southeast. waves
subsiding to calm to 2 feet. 
.sunday...east winds 5 to 15 knots. waves calm to 2 feet. 

$$

fzus63 kmqt 220801
glfls 
expires:202604222000;;787517

open lake forecast for lake superior
national weather service marquette mi
400 am edt wed apr 22 2026

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

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

.synopsis...

30.0 inch high pressure remains over lake superior today. meanwhile, 
a 29.4 inch low over montana deepens to 29.1 inches by this evening 
before moving into southern manitoba by thursday evening. this sends 
29.6 to 29.7 inch troughing over lake superior thursday night into 
friday. as the parent low weakens to 29.9 inches saturday and 
remnant troughing moves south of the lower great lakes at 29.7 
inches, 30.0 inch ridging will build over lake superior this 
weekend. by late sunday, this ridge builds to 30.2 inches. 
meanwhile, a 29.3 inch colorado low develops, moving towards the 
upper midwest by monday.



lsz264-222000-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
400 am edt wed apr 22 2026

.early this morning...east winds less than 10 knots. waves calm
to 2 feet. 
.today...southeast winds less than 10 knots increasing to 5 to
15 knots in the afternoon, then backing east late. waves calm to
2 feet. 
.tonight...east winds 10 to 20 knots veering southeast after
midnight, then increasing to 15 to 25 knots late. a slight chance
of rain showers after midnight. waves building to 3 to 5 feet
occasionally to 7 feet. 
.thursday...southeast winds 20 to 30 knots becoming east to
30 knots with a few gale force gusts to 35 knots possible late.
waves building to 7 to 10 feet occasionally to 13 feet. 
.thursday night...southeast gales to 35 knots. a chance of rain
showers and a slight chance of thunderstorms. waves building to
9 to 12 feet occasionally to 15 feet. 
.friday...southeast gales to 35 knots diminishing to 20 to
30 knots by mid afternoon. rain showers likely. waves subsiding
to 6 to 9 feet occasionally to 11 feet. 
.friday night...south winds 15 to 25 knots becoming west 10 to
20 knots after midnight. a chance of rain showers. waves
subsiding to 2 to 4 feet. 
.saturday...west winds 5 to 15 knots. waves subsiding to calm to
2 feet. 
.sunday...southeast winds 5 to 15 knots. waves calm to 2 feet. 

$$

fzus63 kmqt 220801
glfls 
expires:202604222000;;787518

open lake forecast for lake superior
national weather service marquette mi
400 am edt wed apr 22 2026

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

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

.synopsis...

30.0 inch high pressure remains over lake superior today. meanwhile, 
a 29.4 inch low over montana deepens to 29.1 inches by this evening 
before moving into southern manitoba by thursday evening. this sends 
29.6 to 29.7 inch troughing over lake superior thursday night into 
friday. as the parent low weakens to 29.9 inches saturday and 
remnant troughing moves south of the lower great lakes at 29.7 
inches, 30.0 inch ridging will build over lake superior this 
weekend. by late sunday, this ridge builds to 30.2 inches. 
meanwhile, a 29.3 inch colorado low develops, moving towards the 
upper midwest by monday.



lsz265-222000-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
400 am edt wed apr 22 2026

.early this morning...east winds 5 to 15 knots. waves calm to
2 feet. 
.today...southeast winds 5 to 15 knots backing east in the
afternoon, then increasing to 10 to 20 knots late. waves calm to
2 feet. 
.tonight...southeast winds 15 to 25 knots. a slight chance of
rain showers after midnight. waves building to 2 to 4 feet. 
.thursday...southeast winds 20 to 30 knots increasing to 30 knots
with a few gale force gusts to 35 knots possible late. waves
building to 5 to 8 feet occasionally to 10 feet. 
.thursday night...southeast gales to 35 knots. a chance of rain
showers and a slight chance of thunderstorms. waves building to
7 to 10 feet occasionally to 13 feet. 
.friday...southeast gales to 35 knots diminishing to 20 to
30 knots by mid afternoon. a chance of rain showers through early
afternoon. rain showers likely by mid afternoon. waves subsiding
to 4 to 7 feet occasionally to 9 feet. 
.friday night...southwest winds 15 to 25 knots. a chance of rain
showers. waves subsiding to 1 to 3 feet. 
.saturday...west winds 10 to 20 knots becoming southwest 5 to
15 knots. waves subsiding to calm to 2 feet. 
.sunday...east winds 5 to 15 knots becoming southeast 10 to
20 knots. waves building to 1 to 3 feet. 

$$

fzus63 kmqt 220801
glfls 
expires:202604222000;;787519

open lake forecast for lake superior
national weather service marquette mi
400 am edt wed apr 22 2026

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

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

.synopsis...

30.0 inch high pressure remains over lake superior today. meanwhile, 
a 29.4 inch low over montana deepens to 29.1 inches by this evening 
before moving into southern manitoba by thursday evening. this sends 
29.6 to 29.7 inch troughing over lake superior thursday night into 
friday. as the parent low weakens to 29.9 inches saturday and 
remnant troughing moves south of the lower great lakes at 29.7 
inches, 30.0 inch ridging will build over lake superior this 
weekend. by late sunday, this ridge builds to 30.2 inches. 
meanwhile, a 29.3 inch colorado low develops, moving towards the 
upper midwest by monday.



lsz266-222000-
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-
400 am edt wed apr 22 2026

.early this morning...northeast winds 5 to 15 knots. waves calm
to 2 feet. 
.today...southeast winds 5 to 15 knots backing east late. waves
calm to 2 feet. 
.tonight...east winds 10 to 20 knots veering southeast after
midnight, then increasing to 15 to 25 knots late. waves building
to 2 to 4 feet. 
.thursday...southeast winds 20 to 30 knots increasing to 30 knots
with a few gale force gusts to 35 knots possible late. waves
building to 6 to 9 feet occasionally to 11 feet. 
.thursday night...southeast gales to 40 knots. a chance of rain
showers. waves building to 8 to 11 feet occasionally to 14 feet. 
.friday...southeast gales to 40 knots. a chance of rain showers
through early afternoon, then rain showers likely by mid
afternoon. waves subsiding to 5 to 8 feet occasionally to
10 feet. 
.friday night...southeast winds 20 to 30 knots diminishing to
10 to 20 knots after midnight. a chance of rain showers. waves
subsiding to 2 to 4 feet. 
.saturday...west winds 10 to 20 knots diminishing to 5 to
15 knots. waves subsiding to calm to 2 feet. 
.sunday...east winds 5 to 15 knots becoming southeast 10 to
20 knots. waves building to 1 to 3 feet. 

$$

fzus63 kmqt 220801
glfls 
expires:202604222000;;787520

open lake forecast for lake superior
national weather service marquette mi
400 am edt wed apr 22 2026

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

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

.synopsis...

30.0 inch high pressure remains over lake superior today. meanwhile, 
a 29.4 inch low over montana deepens to 29.1 inches by this evening 
before moving into southern manitoba by thursday evening. this sends 
29.6 to 29.7 inch troughing over lake superior thursday night into 
friday. as the parent low weakens to 29.9 inches saturday and 
remnant troughing moves south of the lower great lakes at 29.7 
inches, 30.0 inch ridging will build over lake superior this 
weekend. by late sunday, this ridge builds to 30.2 inches. 
meanwhile, a 29.3 inch colorado low develops, moving towards the 
upper midwest by monday.



lsz267-222000-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
400 am edt wed apr 22 2026

.early this morning...northeast winds 5 to 15 knots. waves calm
to 2 feet. 
.today...east winds less than 10 knots increasing to 5 to
15 knots late. waves calm to 2 feet. 
.tonight...east winds 5 to 15 knots veering southeast after
midnight, then increasing to 10 to 20 knots late. waves building
to 1 to 3 feet. 
.thursday...southeast winds 15 to 25 knots increasing to 20 to
30 knots in the afternoon. waves building to 4 to 7 feet
occasionally to 9 feet. 
.thursday night...southeast gales to 40 knots. a slight chance of
rain showers after midnight. waves building to 6 to 9 feet
occasionally to 11 feet. 
.friday...southeast gales to 35 knots. a chance of rain showers.
waves subsiding to 4 to 7 feet occasionally to 9 feet. 
.friday night...southeast winds 20 to 30 knots diminishing to
15 to 25 knots after midnight. rain showers likely through
midnight, then a chance of rain showers after midnight. waves
subsiding to 1 to 3 feet. 
.saturday...west winds 10 to 20 knots diminishing to 5 to
15 knots. waves subsiding to calm to 2 feet. 
.sunday...east winds 5 to 15 knots veering southeast. waves calm
to 2 feet. 

$$