fzus61 kbuf 230203
glflo 
expires:202605230900;;485337

open lake forecast for lake ontario
national weather service buffalo ny
1003 pm edt fri may 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 large 30.4 inch high will slide east from the great 
lakes and off the new england coast tonight. this high will 
strengthen to 30.6 inches as it anchors over atlantic canada through 
sunday. a 29.9 inch low and attendant warm front will then approach 
the lower great lakes late tonight and saturday, before weakening 
and sliding eastward sunday. a 30.1 inch high will settle across the 
region monday through tuesday. a cold front associated with a 29.8 
inch low over new england will drop south across the lake on 
wednesday. high pressure over canada will start to expand south over 
the lake on thursday.


loz062-230900-
lake ontario open waters from the niagara river to hamlin beach-
1003 pm edt fri may 22 2026

.overnight...east winds 15 to 20 knots. waves 3 to 5 feet. 
.saturday...east winds 10 to 15 knots increasing to 15 to
25 knots. a chance of rain in the morning, then rain in the
afternoon. waves 3 to 5 feet building to 4 to 7 feet. waves
occasionally around 9 feet. 
.saturday night...east winds to 30 knots diminishing to 15 to
25 knots. rain. waves 5 to 8 feet. waves occasionally around
10 feet. 
.sunday...east winds 15 to 20 knots becoming southeast 5 to
15 knots. rain in the morning, then a chance of showers in the
afternoon. waves 3 to 6 feet subsiding to 1 to 3 feet. 
.sunday night...southeast winds 5 to 10 knots becoming light and
variable. a chance of showers in the evening, then showers likely
overnight. waves 2 feet or less. 
.monday...light and variable winds. showers likely during the
day. waves 1 foot or less. 
.tuesday...southwest winds 10 knots or less becoming west. waves
1 foot or less. 
.wednesday...northwest winds 5 to 10 knots becoming north. waves
1 foot or less. 

$$

fzus61 kbuf 230203
glflo 
expires:202605230900;;485338

open lake forecast for lake ontario
national weather service buffalo ny
1003 pm edt fri may 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 large 30.4 inch high will slide east from the great 
lakes and off the new england coast tonight. this high will 
strengthen to 30.6 inches as it anchors over atlantic canada through 
sunday. a 29.9 inch low and attendant warm front will then approach 
the lower great lakes late tonight and saturday, before weakening 
and sliding eastward sunday. a 30.1 inch high will settle across the 
region monday through tuesday. a cold front associated with a 29.8 
inch low over new england will drop south across the lake on 
wednesday. high pressure over canada will start to expand south over 
the lake on thursday.


loz063>065-230900-
lake ontario open waters from hamlin beach to the saint lawrence
river-
1003 pm edt fri may 22 2026

.overnight...northeast winds 15 to 20 knots becoming east.
waves 2 to 4 feet. 
.saturday...east winds 15 to 20 knots becoming southeast. a
chance of rain late in the morning. rain in the afternoon. waves
1 to 3 feet building to 3 to 5 feet. 
.saturday night...southeast winds 15 to 25 knots. rain. waves
3 to 6 feet building to 4 to 7 feet, then subsiding to 3 to
6 feet. waves occasionally around 9 feet. 
.sunday...southeast winds 15 to 25 knots. rain in the morning,
then showers likely in the afternoon. waves 3 to 6 feet. 
.sunday night...southeast winds 15 to 20 knots becoming south
10 to 15 knots. showers likely overnight. waves 2 to 4 feet
subsiding to 1 to 3 feet. 
.monday...southwest winds 10 knots or less. showers likely during
the day. waves 2 feet or less. 
.tuesday...southwest winds 5 to 10 knots becoming west. waves
1 foot or less. 
.wednesday...northwest winds 5 to 10 knots becoming north. waves
1 foot or less. 

$$

fzus61 kcle 230158
glfle 
expires:202605230815;;485138

open lake forecast for lake erie
national weather service cleveland oh
958 pm edt fri may 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...
low pressure 29.90 inches moves northeastward into the western
basin of lake erie saturday with a weak cold front saturday night
into early sunday. high pressure 30.10 inches builds into the 
region late sunday through early next week.


lez162-163-230815-
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-
958 pm edt fri may 22 2026

.rest of tonight...east winds 15 to 25 knots. a chance of showers
late this evening, then showers after midnight. showers with a
slight chance of thunderstorms late. waves 3 to 5 feet. 
.saturday...east winds 15 to 25 knots becoming southeast and
diminishing to 10 to 15 knots. showers with a slight chance of
thunderstorms. waves 3 to 5 feet subsiding to 2 to 4 feet. 
.saturday night...west winds 5 to 15 knots. showers likely in the
evening. waves 1 to 3 feet subsiding to 1 foot or less. 
.sunday...west winds 10 knots or less becoming east. a chance of
showers in the afternoon. waves 1 foot or less. 
.sunday night...east winds 10 knots or less becoming northwest. a
chance of showers. waves 1 foot or less. 
.monday...north winds less than 10 knots becoming south. waves
1 foot or less. 
.tuesday...light and variable winds. waves 1 foot or less. 
.wednesday...northeast winds 10 knots or less. waves 1 foot or
less. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 230158
glfle 
expires:202605230815;;485139

open lake forecast for lake erie
national weather service cleveland oh
958 pm edt fri may 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...
low pressure 29.90 inches moves northeastward into the western
basin of lake erie saturday with a weak cold front saturday night
into early sunday. high pressure 30.10 inches builds into the 
region late sunday through early next week.


lez164>168-230815-
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-geneva-on-
the-lake to conneaut oh beyond 5 nm off shoreline to us-
canadian border-
958 pm edt fri may 22 2026

.rest of tonight...east winds 15 to 20 knots. a chance of
showers, then showers with a slight chance of thunderstorms late.
waves 3 to 5 feet. 
.saturday...east winds 15 to 20 knots becoming southeast. showers
with a slight chance of thunderstorms. waves 3 to 6 feet. 
.saturday night...southeast winds 15 to 20 knots becoming south
10 to 15 knots. showers in the evening, then a chance of showers
overnight. waves 3 to 5 feet subsiding to 1 to 3 feet. 
.sunday...southwest winds 10 knots or less becoming northwest. a
chance of showers in the afternoon. waves 2 feet or less. 
.sunday night...east winds less than 10 knots becoming northwest.
a chance of showers. waves 1 foot or less. 
.monday...north winds less than 10 knots. waves 1 foot or less. 
.tuesday...light and variable winds. waves 1 foot or less. 
.wednesday...north winds 10 knots or less becoming northeast.
waves 1 foot or less. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 230158
glfle 
expires:202605230815;;485140

open lake forecast for lake erie
national weather service cleveland oh
958 pm edt fri may 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...
low pressure 29.90 inches moves northeastward into the western
basin of lake erie saturday with a weak cold front saturday night
into early sunday. high pressure 30.10 inches builds into the 
region late sunday through early next week.


lez061-169-230815-
ripley to buffalo ny extending from 5nm off shoreline to us-
canadian border-
conneaut oh to ripley ny beyond 5 nm off shoreline to us-
canadian border-
958 pm edt fri may 22 2026

.rest of tonight...east winds 10 to 15 knots. a slight chance of
showers after midnight. a chance of showers late. waves 1 to
3 feet. 
.saturday...east winds 15 to 20 knots. showers with a slight
chance of thunderstorms. waves 1 to 3 feet building to 2 to
4 feet. 
.saturday night...southeast winds 15 to 25 knots becoming south.
showers in the evening, then a chance of showers overnight. waves
3 to 5 feet subsiding to 2 to 4 feet. 
.sunday...south winds 5 to 15 knots becoming west less than
10 knots. a chance of showers in the morning. waves 1 to 3 feet
subsiding to 1 foot or less. 
.sunday night...light and variable winds. showers likely in the
evening, then a chance of showers overnight. waves 1 foot or
less. 
.monday...light and variable winds. waves 1 foot or less. 
.tuesday...light and variable winds. waves 1 foot or less. 
.wednesday...northwest winds 10 knots or less becoming northeast.
waves 1 foot or less. 

winds and waves higher in and near thunderstorms.

$$

fzus63 kdtx 230145
glfsc 
expires:202605230945;;485007

lake st clair forecast
national weather service detroit/pontiac mi
945 pm edt fri may 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...low pressure, 29.90 inches, tracks from the ohio
valley into lake huron this weekend. breezy east flow this
evening and tonight becomes westerly with the passage of the low
late saturday. rain and a few thunderstorms possible this
weekend, especially saturday morning.


lcz460-230945-
lake st clair-
945 pm edt fri may 22 2026

...small craft advisory in effect through saturday evening...

.rest of tonight...east winds 20 to 25 knots. gusts to 30 knots. 
cloudy. light showers likely early in the morning. waves 2 to 4 
feet.
.saturday...east winds to 30 knots diminishing to 20 to 25 knots in
the afternoon. gusts to 30 knots. showers until late afternoon. 
rain showers likely late in the afternoon. waves 3 to 5 feet. 
waves occasionally around 7 feet.
.saturday night...east winds 15 to 20 knots becoming south 10 to 15
knots by midnight...then veering to the southwest after midnight.
showers early in the evening...then a chance of light showers by
midnight. waves 1 to 3 feet.
.sunday...west winds 5 to 10 knots early in the morning becoming
light and variable...then becoming south 5 to 10 knots early in the
afternoon. mostly cloudy. a chance of light showers early in the
afternoon. waves 2 feet or less.
.sunday night...light and variable winds. mostly cloudy with a
chance of light showers ...then partly cloudy after midnight. waves
2 feet or less.
.monday...light and variable winds. partly sunny in the morning
becoming mostly clear. waves nearly calm.
.tuesday...south winds 5 to 10 knots. mostly clear. waves 2 feet or
less.
.wednesday...northeast winds 10 to 15 knots. partly cloudy. waves 2
feet or less.

$$

fzus63 kdtx 230144
glflh 
expires:202605230945;;485002

open lake forecast for lake huron
national weather service detroit/pontiac mi
944 pm edt fri may 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...low pressure, 29.90 inches, tracks from the ohio
valley into lake huron this weekend. breezy east flow this
evening and tonight becomes westerly with the passage of the low
late saturday. rain and a few thunderstorms possible this
weekend, especially saturday morning.


lhz462>464-230945-
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-
944 pm edt fri may 22 2026

.rest of tonight...east winds 15 to 20 knots. waves 3 to 5 feet. 
.saturday...east winds 15 to 20 knots with gusts to around
30 knots increasing to 20 to 25 knots with gusts to around
30 knots early in the afternoon...then decreasing to 15 to
20 knots with gusts to around 30 knots late in the afternoon. a
chance of showers in the morning...then showers in the afternoon.
waves 5 to 7 feet. waves occasionally around 10 feet. 
.saturday night...east winds 20 to 25 knots with gusts to around
30 knots decreasing to 10 to 15 knots. showers in the evening...
then a chance of showers after midnight. waves 5 to 7 feet. waves
occasionally around 10 feet. 
.sunday...southwest winds 5 to 10 knots backing to the southeast
early in the afternoon. waves 3 to 5 feet subsiding to 2 feet or
less in the late morning and afternoon. 
.sunday night...east winds 5 to 10 knots early in the evening
becoming light and variable. waves 2 feet or less. 
.monday...light and variable winds becoming east 5 to 10 knots
late in the afternoon...then veering to the south late in the
evening. waves 2 feet or less. 
.tuesday...south winds 5 to 10 knots. waves 2 feet or less. 
.wednesday...north winds 5 to 10 knots. waves 2 feet or less. 


$$

fzus63 kdtx 230144
glflh 
expires:202605230945;;485001

open lake forecast for lake huron
national weather service detroit/pontiac mi
944 pm edt fri may 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...low pressure, 29.90 inches, tracks from the ohio
valley into lake huron this weekend. breezy east flow this
evening and tonight becomes westerly with the passage of the low
late saturday. rain and a few thunderstorms possible this
weekend, especially saturday morning.


lhz363-230945-
lake huron from sturgeon point to alabaster mi beyond 5nm off
shore-
944 pm edt fri may 22 2026

.rest of tonight...east winds 15 to 20 knots. waves 3 to 5 feet. 
.saturday...east winds 15 to 20 knots. showers in the afternoon.
waves 4 to 6 feet. waves occasionally around 8 feet. 
.saturday night...east winds 15 to 20 knots becoming northeast
10 to 15 knots after midnight. showers likely in the evening...
then a chance of showers after midnight. waves 5 to 7 feet. waves
occasionally around 10 feet. 
.sunday...north winds 5 to 10 knots backing to the west in the
late morning and early afternoon...then backing to the southeast
early in the afternoon. waves 3 to 5 feet subsiding to 1 to
3 feet early in the afternoon. 
.sunday night...southeast winds 5 to 10 knots early in the
evening becoming light and variable. waves 2 feet or less. 
.monday...light and variable winds becoming south 5 to 10 knots.
waves 2 feet or less. 
.tuesday...southwest winds 5 to 10 knots becoming light and
variable. waves 2 feet or less. 
.wednesday...north winds 5 to 10 knots. waves 2 feet or less. 


$$

fzus63 kdtx 230144
glflh 
expires:202605230945;;485000

open lake forecast for lake huron
national weather service detroit/pontiac mi
944 pm edt fri may 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...low pressure, 29.90 inches, tracks from the ohio
valley into lake huron this weekend. breezy east flow this
evening and tonight becomes westerly with the passage of the low
late saturday. rain and a few thunderstorms possible this
weekend, especially saturday morning.


lhz361-362-230945-
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-
944 pm edt fri may 22 2026

.rest of tonight...east winds 15 to 20 knots. waves 4 to 6 feet. 
.saturday...east winds 20 to 25 knots with gusts to around
30 knots. showers likely in the afternoon. waves 6 to 9 feet.
waves occasionally around 12 feet. 
.saturday night...east winds 20 to 25 knots with gusts to around
30 knots decreasing to 10 to 15 knots after midnight. a chance of
showers. waves 6 to 9 feet. waves occasionally around 11 feet. 
.sunday...north winds 5 to 10 knots. waves 3 to 5 feet subsiding
to 1 to 3 feet early in the afternoon. 
.sunday night...light and variable winds. waves 2 feet or less. 
.monday...light and variable winds becoming south 5 to 10 knots
late in the morning...then backing to the northeast late in the
afternoon veering to the south late in the evening. waves 2 feet
or less. 
.tuesday...south winds 5 to 10 knots backing to the north early
in the evening...then backing to the west by midnight. waves
2 feet or less. 
.wednesday...north winds 5 to 10 knots backing to the northwest
by midnight. waves 2 feet or less. 


$$

fzus63 kmkx 230159
glflm 
expires:202605230930;;485158

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
859 pm cdt fri may 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...

high pressure around 30.5 inches centered over quebec this evening
will slide southeast and become centered over the northeast united
states by early saturday morning, while strengthening a bit to
30.6 inches. meanwhile, low pressure of 29.9 inches will lift
from the kentucky/indiana border this evening to around the
western tip of lake eerie by early saturday afternoon. breezy east
to northeast winds this evening will become lighter out of the
north by mid-day tomorrow, then light and variable tomorrow
evening into tomorrow night. southerly winds are then likely for
sunday through tuesday next week. 


lmz261-362-364-366-563-565-567-868-230930-
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-
859 pm cdt fri may 22 2026

sheboygan wi to pentwater mi north...

.rest of tonight...east winds 15 to 25 kt. waves 3 to 5 ft 
subsiding to 2 to 4 ft. 
.saturday...east winds 15 to 25 kt becoming northeast. chance of 
rain showers. waves 3 to 5 ft. 
.saturday night...east winds 15 to 25 kt diminishing to 10 to 20 
kt after midnight, then becoming southeast 10 to 15 kt late. waves
3 to 5 ft subsiding to 1 to 2 ft. 
.sunday...south winds 5 to 10 kt increasing to 10 to 15 kt. waves
1 to 2 ft. 
.sunday night...south winds 10 to 15 kt becoming southwest. waves
1 to 2 ft. 
.monday...south winds 5 to 10 kt increasing to 10 to 15 kt. waves
1 to 2 ft building to 1 to 3 ft. 
.monday night...south winds 10 to 15 kt becoming southwest. waves
1 to 3 ft. 
.tuesday...southwest winds 10 to 15 kt increasing to 10 to 20 kt.
waves 1 to 2 ft. 
.wednesday...northeast winds 10 to 15 kt increasing to 10 to
20 kt. waves 1 ft or less building to 1 to 3 ft.  

$$

fzus63 kmkx 230159
glflm 
expires:202605230930;;485159

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
859 pm cdt fri may 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...

high pressure around 30.5 inches centered over quebec this evening
will slide southeast and become centered over the northeast united
states by early saturday morning, while strengthening a bit to
30.6 inches. meanwhile, low pressure of 29.9 inches will lift
from the kentucky/indiana border this evening to around the
western tip of lake eerie by early saturday afternoon. breezy east
to northeast winds this evening will become lighter out of the
north by mid-day tomorrow, then light and variable tomorrow
evening into tomorrow night. southerly winds are then likely for
sunday through tuesday next week. 


lmz080-669-671-673-675-777-779-870-872-874-876-878-230930-
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-
859 pm cdt fri may 22 2026

sheboygan wi to pentwater mi south...

.rest of tonight...northeast winds 10 to 20 kt. chance of showers
overnight. waves 2 to 4 ft. 
.saturday...northeast winds 10 to 20 kt becoming north 10 to
15 kt. chance of rain showers in the morning. waves 1 to 3 ft. 
.saturday night...north winds 5 to 10 kt veering to south. waves
1 to 2 ft. 
.sunday...south winds 5 to 10 kt. chance of rain showers in the
morning. waves 1 ft or less. 
.sunday night...southeast winds 5 to 10 kt becoming south. waves
1 to 2 ft. 
.monday...south winds 5 to 10 kt becoming southeast. waves 1 to
2 ft. 
.monday night...southeast winds 5 to 10 kt becoming south. waves
1 to 2 ft. 
.tuesday...south winds 5 to 10 kt increasing to 10 to 15 kt.
waves 1 to 2 ft. 
.wednesday...northeast winds 5 to 10 kt becoming north 10 to
20 kt. waves 1 ft or less building to 1 to 3 ft.  

$$

fzus63 kmqt 230201
glfls 
expires:202605230800;;485226

open lake forecast for lake superior
national weather service marquette mi
1000 pm edt fri may 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... 

30.4 inch high pressure over quebec extends a 30.3 inch ridge over 
lake superior through tonight. meanwhile, two 29.7-29.8 inch lows, 
one over the lower mississippi valley and one over the northern 
plains, are set track into the lower great lakes and manitoba 
(respectively) into saturday while weakening to 29.9 inches. in 
response to these lows, weak troughing of around 30.0 inches passes 
northward over lake superior saturday night into sunday night, 
before ridging of around 30.0 inches returns on monday. behind this, 
expect weak troughing of around 29.9 inches to return to the lake by 
tuesday morning.



lsz264-230800-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
1000 pm edt fri may 22 2026

.rest of tonight...southeast winds 15 to 25 knots. waves 2 to
4 feet. 
.saturday...southeast winds 15 to 25 knots. a chance of rain
showers. waves building to 3 to 5 feet occasionally to 7 feet. 
.saturday night...southeast winds 15 to 25 knots diminishing to
5 to 15 knots. a chance of rain showers. waves building to 3 to
6 feet occasionally to 8 feet, then subsiding to 2 to 4 feet. 
.sunday...southwest winds 5 to 15 knots. waves subsiding to calm
to 2 feet. 
.sunday night...south winds 5 to 15 knots veering southwest after
midnight. waves calm to 2 feet. 
.monday...southwest winds 5 to 15 knots backing south by mid
afternoon. waves calm to 2 feet. 
.monday night...south winds 5 to 15 knots veering southwest after
midnight. waves calm to 2 feet. 
.tuesday...west winds less than 10 knots becoming east 5 to
15 knots. waves calm to 2 feet. 
.wednesday...east winds 5 to 15 knots. waves calm to 2 feet. 

$$

fzus63 kmqt 230201
glfls 
expires:202605230800;;485227

open lake forecast for lake superior
national weather service marquette mi
1000 pm edt fri may 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... 

30.4 inch high pressure over quebec extends a 30.3 inch ridge over 
lake superior through tonight. meanwhile, two 29.7-29.8 inch lows, 
one over the lower mississippi valley and one over the northern 
plains, are set track into the lower great lakes and manitoba 
(respectively) into saturday while weakening to 29.9 inches. in 
response to these lows, weak troughing of around 30.0 inches passes 
northward over lake superior saturday night into sunday night, 
before ridging of around 30.0 inches returns on monday. behind this, 
expect weak troughing of around 29.9 inches to return to the lake by 
tuesday morning.



lsz265-230800-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
1000 pm edt fri may 22 2026

.rest of tonight...southeast winds 20 to 30 knots diminishing to
15 to 25 knots after midnight, then backing east late. waves 2 to
4 feet. 
.saturday...southeast winds 15 to 25 knots increasing to 20 to
30 knots in the afternoon. a chance of rain showers. waves
building to 3 to 5 feet occasionally to 7 feet. 
.saturday night...southeast winds 15 to 25 knots diminishing to
5 to 15 knots. a chance of rain showers. waves subsiding to 1 to
3 feet. 
.sunday...south winds 5 to 15 knots backing southeast by mid
afternoon. waves subsiding to calm to 2 feet. 
.sunday night...south winds 5 to 15 knots becoming southwest
10 to 20 knots after midnight. waves calm to 2 feet. 
.monday...southwest winds 5 to 15 knots backing southeast by mid
afternoon. waves calm to 2 feet. 
.monday night...south winds 5 to 15 knots becoming southwest
10 to 20 knots after midnight. waves calm to 2 feet. 
.tuesday...east winds 5 to 15 knots. waves calm to 2 feet. 
.wednesday...east winds 5 to 15 knots. waves calm to 2 feet. 

$$

fzus63 kmqt 230201
glfls 
expires:202605230800;;485224

open lake forecast for lake superior
national weather service marquette mi
1000 pm edt fri may 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... 

30.4 inch high pressure over quebec extends a 30.3 inch ridge over 
lake superior through tonight. meanwhile, two 29.7-29.8 inch lows, 
one over the lower mississippi valley and one over the northern 
plains, are set track into the lower great lakes and manitoba 
(respectively) into saturday while weakening to 29.9 inches. in 
response to these lows, weak troughing of around 30.0 inches passes 
northward over lake superior saturday night into sunday night, 
before ridging of around 30.0 inches returns on monday. behind this, 
expect weak troughing of around 29.9 inches to return to the lake by 
tuesday morning.



lsz162-230800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1000 pm edt fri may 22 2026 /900 pm cdt fri may 22 2026/

.rest of tonight...east winds 15 to 25 knots diminishing to 10 to
20 knots late. a chance of rain showers. waves 3 to 6 feet
occasionally to 8 feet subsiding to 2 to 4 feet. 
.saturday...northeast winds 10 to 20 knots. rain showers likely
through early afternoon, then a chance of rain showers by mid
afternoon. waves subsiding to 1 to 3 feet. 
.saturday night...northeast winds 5 to 15 knots backing west
late. a slight chance of rain showers through midnight. waves
subsiding to calm to 2 feet. 
.sunday...southwest winds 5 to 15 knots backing south by mid
afternoon. waves calm to 2 feet. 
.sunday night...southwest winds 5 to 15 knots. waves calm to
2 feet. 
.monday...southwest winds 5 to 15 knots backing southeast by mid
afternoon. waves calm to 2 feet. 
.monday night...north winds less than 10 knots. waves calm to
2 feet. 
.tuesday...east winds 5 to 15 knots backing northeast. waves calm
to 2 feet. 
.wednesday...northeast winds 10 to 20 knots diminishing to 5 to
15 knots. waves building to 1 to 3 feet, then subsiding to calm
to 2 feet. 

$$

fzus63 kmqt 230201
glfls 
expires:202605230800;;485229

open lake forecast for lake superior
national weather service marquette mi
1000 pm edt fri may 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... 

30.4 inch high pressure over quebec extends a 30.3 inch ridge over 
lake superior through tonight. meanwhile, two 29.7-29.8 inch lows, 
one over the lower mississippi valley and one over the northern 
plains, are set track into the lower great lakes and manitoba 
(respectively) into saturday while weakening to 29.9 inches. in 
response to these lows, weak troughing of around 30.0 inches passes 
northward over lake superior saturday night into sunday night, 
before ridging of around 30.0 inches returns on monday. behind this, 
expect weak troughing of around 29.9 inches to return to the lake by 
tuesday morning.



lsz267-230800-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
1000 pm edt fri may 22 2026

.rest of tonight...southeast winds 15 to 25 knots backing east
after midnight. waves 1 to 3 feet subsiding to calm to 2 feet,
then building to 1 to 3 feet. 
.saturday...southeast winds 20 to 30 knots. waves building to
3 to 6 feet occasionally to 8 feet. 
.saturday night...southeast winds 20 to 30 knots diminishing to
5 to 15 knots. a slight chance of rain showers. waves subsiding
to calm to 2 feet. 
.sunday...southeast winds 5 to 15 knots. waves calm to 2 feet. 
.sunday night...south winds 5 to 15 knots increasing to 10 to
20 knots after midnight. waves calm to 2 feet. 
.monday...south winds 5 to 15 knots backing southeast by mid
afternoon. waves calm to 2 feet. 
.monday night...south winds 5 to 15 knots. waves calm to 2 feet. 
.tuesday...north winds 5 to 15 knots veering northeast. waves
calm to 2 feet. 
.wednesday...north winds 5 to 15 knots veering northeast. waves
calm to 2 feet. 

$$

fzus63 kmqt 230201
glfls 
expires:202605230800;;485228

open lake forecast for lake superior
national weather service marquette mi
1000 pm edt fri may 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... 

30.4 inch high pressure over quebec extends a 30.3 inch ridge over 
lake superior through tonight. meanwhile, two 29.7-29.8 inch lows, 
one over the lower mississippi valley and one over the northern 
plains, are set track into the lower great lakes and manitoba 
(respectively) into saturday while weakening to 29.9 inches. in 
response to these lows, weak troughing of around 30.0 inches passes 
northward over lake superior saturday night into sunday night, 
before ridging of around 30.0 inches returns on monday. behind this, 
expect weak troughing of around 29.9 inches to return to the lake by 
tuesday morning.



lsz266-230800-
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-
1000 pm edt fri may 22 2026

.rest of tonight...southeast winds 20 to 30 knots diminishing to
15 to 25 knots after midnight, then backing east late. waves 2 to
4 feet. 
.saturday...southeast winds 15 to 25 knots increasing to 20 to
30 knots late. a slight chance of rain showers by mid afternoon.
waves building to 3 to 6 feet occasionally to 8 feet. 
.saturday night...southeast winds 20 to 30 knots diminishing to
5 to 15 knots. a chance of rain showers. waves subsiding to 1 to
3 feet. 
.sunday...south winds 5 to 15 knots. waves subsiding to calm to
2 feet. 
.sunday night...south winds 5 to 15 knots veering southwest after
midnight. waves calm to 2 feet. 
.monday...south winds 5 to 15 knots backing southeast by mid
afternoon. waves calm to 2 feet. 
.monday night...south winds 5 to 15 knots veering southwest after
midnight. waves calm to 2 feet. 
.tuesday...north winds 5 to 15 knots veering east. waves calm to
2 feet. 
.wednesday...northeast winds 5 to 15 knots. waves calm to 2 feet.

$$

fzus63 kmqt 230201
glfls 
expires:202605230800;;485225

open lake forecast for lake superior
national weather service marquette mi
1000 pm edt fri may 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... 

30.4 inch high pressure over quebec extends a 30.3 inch ridge over 
lake superior through tonight. meanwhile, two 29.7-29.8 inch lows, 
one over the lower mississippi valley and one over the northern 
plains, are set track into the lower great lakes and manitoba 
(respectively) into saturday while weakening to 29.9 inches. in 
response to these lows, weak troughing of around 30.0 inches passes 
northward over lake superior saturday night into sunday night, 
before ridging of around 30.0 inches returns on monday. behind this, 
expect weak troughing of around 29.9 inches to return to the lake by 
tuesday morning.



lsz263-230800-
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-
1000 pm edt fri may 22 2026

.rest of tonight...east winds 15 to 25 knots diminishing to 10 to
20 knots after midnight. a chance of rain showers after midnight.
waves 3 to 5 feet occasionally to 7 feet subsiding to 2 to
4 feet. 
.saturday...east winds 10 to 20 knots. a chance of rain showers.
waves building to 3 to 5 feet occasionally to 7 feet. 
.saturday night...southeast winds 10 to 20 knots becoming west
5 to 15 knots late. a chance of rain showers. waves subsiding to
1 to 3 feet. 
.sunday...southwest winds 5 to 15 knots backing south by mid
afternoon. waves subsiding to calm to 2 feet. 
.sunday night...south winds 5 to 15 knots veering southwest after
midnight. waves calm to 2 feet. 
.monday...southwest winds 5 to 15 knots backing south by mid
afternoon. waves calm to 2 feet. 
.monday night...south winds 5 to 15 knots veering west after
midnight. waves calm to 2 feet. 
.tuesday...southwest winds 5 to 15 knots backing northeast. waves
calm to 2 feet. 
.wednesday...northeast winds 5 to 15 knots. waves building to
1 to 3 feet, then subsiding to calm to 2 feet. 

$$