fzus61 kbuf 200202
glflo 
expires:202605200900;;322315

open lake forecast for lake ontario
national weather service buffalo ny
1002 pm edt tue may 19 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...an 29.6 inch area of low pressure over western quebec 
this evening will swing a cold front across the lake late tonight. a 
large 30.4 inch area of surface high pressure will then build across 
the entire great lakes region wednesday afternoon through thursday, 
before sliding east off the new england coast late friday. this 
surface high will then strengthen to 30.6 inches as it anchors over 
atlantic canada through sunday.  a 29.9 inch low and attendant warm 
front will then slowly approach the lake later friday night and 
saturday, before weakening and sliding eastward sunday with the 
large area of high pressure over atlantic canada.


loz063>065-200900-
lake ontario open waters from hamlin beach to the saint lawrence
river-
1002 pm edt tue may 19 2026

.rest of tonight...southwest winds 15 to 20 knots becoming west.
showers likely with a chance of thunderstorms late this evening,
then showers likely after midnight. waves 2 to 4 feet. 
.wednesday...west winds 15 to 20 knots. a chance of showers
early. waves 2 to 4 feet building to 3 to 6 feet. 
.wednesday night...west winds 15 to 20 knots becoming north 10 to
15 knots. waves 3 to 6 feet subsiding to 1 to 3 feet. 
.thursday...northeast winds 5 to 15 knots becoming west. waves
1 to 3 feet subsiding to 1 foot or less. 
.thursday night...west winds less than 10 knots. waves 1 foot or
less. 
.friday...east winds 5 to 15 knots increasing to 15 to 20 knots.
a chance of showers friday night. waves 1 to 3 feet. 
.saturday...east winds 15 to 20 knots becoming southeast. showers
likely. waves 3 to 5 feet subsiding to 2 to 4 feet. 
.sunday...southeast winds 15 to 20 knots becoming south 10 to
15 knots. showers likely during the day, then a chance of showers
sunday night. waves 2 to 4 feet subsiding to 1 to 3 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kbuf 200202
glflo 
expires:202605200900;;322314

open lake forecast for lake ontario
national weather service buffalo ny
1002 pm edt tue may 19 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...an 29.6 inch area of low pressure over western quebec 
this evening will swing a cold front across the lake late tonight. a 
large 30.4 inch area of surface high pressure will then build across 
the entire great lakes region wednesday afternoon through thursday, 
before sliding east off the new england coast late friday. this 
surface high will then strengthen to 30.6 inches as it anchors over 
atlantic canada through sunday.  a 29.9 inch low and attendant warm 
front will then slowly approach the lake later friday night and 
saturday, before weakening and sliding eastward sunday with the 
large area of high pressure over atlantic canada.


loz062-200900-
lake ontario open waters from the niagara river to hamlin beach-
1002 pm edt tue may 19 2026

.rest of tonight...southwest winds 15 to 20 knots becoming west.
showers with a chance of thunderstorms late this evening, then a
chance of showers after midnight. showers likely late. waves 3 to
5 feet. 
.wednesday...northwest winds 10 to 15 knots becoming west. waves
2 to 4 feet subsiding to 1 to 3 feet. 
.wednesday night...northwest winds 10 to 15 knots becoming north.
waves 1 to 3 feet. 
.thursday...northeast winds 5 to 15 knots becoming southeast.
waves 2 feet or less. 
.thursday night...east winds 10 knots or less. waves 1 foot or
less. 
.friday...east winds 10 to 15 knots increasing to 15 to 20 knots.
showers likely friday night. waves 2 feet or less building to
2 to 4 feet. 
.saturday...east winds 15 to 25 knots. showers likely. waves 3 to
6 feet. 
.sunday...east winds 5 to 15 knots becoming southwest less than
10 knots. showers likely during the day, then a chance of showers
sunday night. waves 1 to 3 feet subsiding to 1 foot or less. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 200159
glfle 
expires:202605200815;;322094

open lake forecast for lake erie
national weather service cleveland oh
959 pm edt tue may 19 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 cold front tracks southeast across lake erie tonight. pressure
rises wednesday and a ridge averaging 30.30 inches over the lake 
builds in for thursday. low pressure 30.00 inches moves in from 
the southwest over the western end of lake erie friday into 
saturday.


lez165>167-200815-
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-
959 pm edt tue may 19 2026

.rest of tonight...southwest winds 10 to 15 knots becoming
northwest. showers with a chance of thunderstorms, then a chance
of showers with a slight chance of thunderstorms late. waves 2 to
4 feet. 
.wednesday...north winds 10 to 15 knots. a slight chance of
showers early. waves 1 to 3 feet. 
.wednesday night...north winds 10 to 15 knots becoming northeast
15 to 20 knots. waves 2 to 4 feet. 
.thursday...northeast winds 15 to 20 knots. waves 2 to 4 feet
building to 3 to 5 feet. 
.thursday night...northeast winds 15 to 20 knots becoming east.
waves 3 to 5 feet. 
.friday...east winds 15 to 20 knots. a chance of showers during
the day, then showers friday night. waves 3 to 5 feet. 
.saturday...east winds 15 to 20 knots becoming south 5 to
15 knots. showers with a chance of thunderstorms during the day,
then a chance of showers saturday night. waves 3 to 5 feet
subsiding to 1 to 3 feet. 
.sunday...south winds 10 knots or less becoming northwest. a
chance of showers and thunderstorms during the day, then a chance
of showers sunday night. waves 1 foot or less. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 200159
glfle 
expires:202605200815;;322093

open lake forecast for lake erie
national weather service cleveland oh
959 pm edt tue may 19 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 cold front tracks southeast across lake erie tonight. pressure
rises wednesday and a ridge averaging 30.30 inches over the lake 
builds in for thursday. low pressure 30.00 inches moves in from 
the southwest over the western end of lake erie friday into 
saturday.


lez162>164-200815-
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-
959 pm edt tue may 19 2026

.rest of tonight...southwest winds 10 to 15 knots becoming
northwest. showers likely with a chance of thunderstorms late
this evening, then a chance of showers and thunderstorms after
midnight. a chance of showers late. waves 1 to 3 feet. 
.wednesday...north winds 5 to 15 knots becoming east. waves 1 to
3 feet. 
.wednesday night...northeast winds 10 to 15 knots increasing to
15 to 20 knots. waves 1 to 3 feet building to 2 to 4 feet. 
.thursday...northeast winds 15 to 20 knots. waves 2 to 4 feet
building to 3 to 5 feet. 
.thursday night...northeast winds 15 to 20 knots becoming east.
waves 3 to 5 feet subsiding to 2 to 4 feet. 
.friday...east winds 15 to 25 knots. showers likely during the
day, then showers with a chance of thunderstorms friday night.
waves 3 to 5 feet. 
.saturday...east winds 15 to 20 knots becoming southwest 5 to
15 knots. showers likely with a chance of thunderstorms during
the day, then a chance of showers saturday night. waves 2 to
4 feet subsiding to 1 to 3 feet. 
.sunday...southwest winds 5 to 10 knots becoming northwest. a
chance of showers during the day. waves 1 foot or less. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 200159
glfle 
expires:202605200815;;322095

open lake forecast for lake erie
national weather service cleveland oh
959 pm edt tue may 19 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 cold front tracks southeast across lake erie tonight. pressure
rises wednesday and a ridge averaging 30.30 inches over the lake 
builds in for thursday. low pressure 30.00 inches moves in from 
the southwest over the western end of lake erie friday into 
saturday.


lez061-168-169-200815-
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-
959 pm edt tue may 19 2026

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

winds and waves higher in and near thunderstorms.

$$

fzus63 kdtx 200140
glflh 
expires:202605200945;;321779

open lake forecast for lake huron
national weather service detroit/pontiac mi
940 pm edt tue may 19 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...high pressure, 30.50 inches, will start to build in
over the great lakes this morning and will slow move east across
the region through friday morning. northwest flow will veer to
the northeast through the midweek period as high pressure settles
over the area.


lhz361-200945-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
940 pm edt tue may 19 2026

.rest of tonight...northwest winds 15 to 20 knots increasing to
20 to 25 knots early in the morning. waves 5 to 7 feet. waves
occasionally around 10 feet. 
.wednesday...northwest winds 20 to 25 knots with gusts to around
30 knots decreasing to 15 to 20 knots in the late morning and
afternoon. waves 4 to 6 feet. 
.wednesday night...northwest winds 15 to 20 knots becoming north
5 to 10 knots. waves 3 to 5 feet subsiding to 1 to 3 feet after
midnight. waves occasionally around 8 feet. 
.thursday...northeast winds 5 to 10 knots veering to the east in
the late morning and afternoon. waves 2 feet or less. 
.thursday night...east winds 5 to 10 knots early in the evening
becoming light and variable...then becoming east 5 to 10 knots
after midnight. waves 2 feet or less. 
.friday...east winds 5 to 10 knots increasing to 20 to 25 knots
with gusts to around 30 knots. a chance of showers late in the
evening. waves 2 feet or less building to 6 to 9 feet. waves
occasionally around 12 feet. 
.saturday...east winds to 30 knots with gusts to 35 knot gales
decreasing to 15 to 20 knots. a chance of showers. waves 6 to
9 feet. waves occasionally around 11 feet. 
.sunday...east winds 10 to 15 knots becoming southeast 5 to
10 knots in the late morning and early afternoon...then becoming
north 10 to 15 knots early in the evening becoming west 5 to
10 knots by midnight. a chance of showers early in the morning.
waves 3 to 5 feet subsiding to 1 to 3 feet. 


$$

fzus63 kdtx 200140
glflh 
expires:202605200945;;321780

open lake forecast for lake huron
national weather service detroit/pontiac mi
940 pm edt tue may 19 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...high pressure, 30.50 inches, will start to build in
over the great lakes this morning and will slow move east across
the region through friday morning. northwest flow will veer to
the northeast through the midweek period as high pressure settles
over the area.


lhz362-363-200945-
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-
940 pm edt tue may 19 2026

.rest of tonight...northwest winds 15 to 20 knots. waves 6 to
9 feet. waves occasionally around 12 feet. 
.wednesday...northwest winds 15 to 20 knots veering to the north
late in the afternoon. waves 6 to 9 feet. waves occasionally
around 12 feet. 
.wednesday night...north winds 15 to 20 knots decreasing to 10 to
15 knots in the late evening and overnight. waves 3 to 5 feet. 
.thursday...north winds 5 to 10 knots veering to the northeast in
the late morning and afternoon. waves 2 to 4 feet subsiding to
1 to 3 feet in the late morning and afternoon. 
.thursday night...northeast winds 5 to 10 knots. waves 1 to
3 feet. 
.friday...east winds 10 to 15 knots increasing to 15 to 20 knots
late in the afternoon. a chance of showers late in the afternoon.
waves 1 to 3 feet building to 4 to 6 feet late in the afternoon.
waves occasionally around 8 feet. 
.saturday...east winds 20 to 25 knots with gusts to around
30 knots decreasing to 10 to 15 knots. showers likely early in
the morning...then a chance of showers . waves 6 to 9 feet. waves
occasionally around 12 feet. 
.sunday...southeast winds 5 to 10 knots. a chance of showers
early in the morning. waves 3 to 5 feet subsiding to 1 to 3 feet.


$$

fzus63 kdtx 200140
glflh 
expires:202605200945;;321781

open lake forecast for lake huron
national weather service detroit/pontiac mi
940 pm edt tue may 19 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...high pressure, 30.50 inches, will start to build in
over the great lakes this morning and will slow move east across
the region through friday morning. northwest flow will veer to
the northeast through the midweek period as high pressure settles
over the area.


lhz462>464-200945-
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-
940 pm edt tue may 19 2026

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


$$

fzus63 kdtx 200139
glfsc 
expires:202605200945;;321771

lake st clair forecast
national weather service detroit/pontiac mi
939 pm edt tue may 19 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...high pressure, 30.50 inches, will start to build in
over the great lakes this morning and will slow move east across
the region through friday morning. northwest flow will veer to
the northeast through the midweek period as high pressure settles
over the area.


lcz460-200945-
lake st clair-
939 pm edt tue may 19 2026

...small craft advisory in effect until 10 pm edt this evening...

.rest of tonight...west winds 10 to 15 knots becoming north 15 to 20
knots early in the morning. mostly cloudy. a chance of light showers
by midnight. waves 2 feet or less.
.wednesday...north winds 15 to 20 knots diminishing to 10 to 15
knots late in the morning...then diminishing to 5 to 10 knots early
in the afternoon becoming northeast 10 to 15 knots late in the
afternoon. mostly cloudy. waves 2 feet or less.
.wednesday night...northeast winds 15 to 20 knots diminishing to 10
to 15 knots after midnight. mostly cloudy early in the evening
becoming partly cloudy. waves 1 to 3 feet.
.thursday...northeast winds 10 to 15 knots. mostly sunny. waves 2
feet or less.
.thursday night...northeast winds 10 to 15 knots increasing to 15 to
20 knots after midnight. partly cloudy. waves 1 to 3 feet.
.friday...east winds 15 to 20 knots increasing to 20 to 25 knots
with gusts to 30 knots in the evening. mostly cloudy. a chance of
showers in the afternoon. rain showers likely in the evening. waves
2 to 4 feet. a small craft advisory may be needed.
.saturday...east winds 20 to 25 knots with gusts to 30 knots.
showers. waves 2 to 4 feet.
.sunday...west winds 5 to 10 knots. mostly cloudy with a chance of
showers. waves 2 feet or less.

$$

fzus63 kmkx 200217
glflm 
expires:202605200930;;323096

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
917 pm cdt tue may 19 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...

lingering gusty winds this evening, but will gradually diminish 
overnight as high pressure around 30.4 inches builds into the 
upper great lakes region wednesday and thursday. still looking at
gusty northeast winds through midweek, especially over the
southern half of the lake and building waves along the western 
lakeshore. high pressure continues to build to around 30.5 inches
as it lifts northeastward across ontario and quebec friday 
through the weekend with easterly winds persisting across lake 
michigan. expecting winds to increase during this timeframe as 
well with a broad low pressure trough around 29.8 inches setting 
up over the plains.


lmz080-669-671-673-675-777-779-870-872-874-876-878-200930-
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-
917 pm cdt tue may 19 2026

sheboygan wi to pentwater mi south...

.rest of tonight...northwest winds 10 to 20 kt becoming north.
waves 2 to 4 ft. 
.wednesday...north winds 10 to 20 kt increasing to 15 to 25 kt.
waves 3 to 5 ft building to 4 to 6 ft occasionally to 8 ft. 
.wednesday night...north winds 15 to 25 kt becoming northeast
10 to 20 kt. waves 4 to 6 ft occasionally to 8 ft subsiding to
3 to 5 ft. 
.thursday...east winds 10 to 15 kt becoming north 10 to 20 kt.
waves 2 to 4 ft. 
.thursday night...northeast winds 10 to 20 kt becoming east.
waves 3 to 5 ft. 
.friday...east winds 10 to 20 kt becoming northeast 15 to 25 kt.
chance of rain showers. waves 3 to 5 ft. 
.friday night...east winds 15 to 25 kt. showers likely. waves
4 to 6 ft occasionally to 8 ft. 
.saturday...east winds 10 to 20 kt becoming north 10 to 15 kt.
waves 3 to 5 ft subsiding to 2 to 4 ft. 
.sunday...west winds 5 to 10 kt backing to southeast. waves 1 ft
or less.  

$$

fzus63 kmkx 200217
glflm 
expires:202605200930;;323095

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
917 pm cdt tue may 19 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...

lingering gusty winds this evening, but will gradually diminish 
overnight as high pressure around 30.4 inches builds into the 
upper great lakes region wednesday and thursday. still looking at
gusty northeast winds through midweek, especially over the
southern half of the lake and building waves along the western 
lakeshore. high pressure continues to build to around 30.5 inches
as it lifts northeastward across ontario and quebec friday 
through the weekend with easterly winds persisting across lake 
michigan. expecting winds to increase during this timeframe as 
well with a broad low pressure trough around 29.8 inches setting 
up over the plains.


lmz261-362-364-366-563-565-567-868-200930-
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-
917 pm cdt tue may 19 2026

sheboygan wi to pentwater mi north...

.rest of tonight...northwest winds 15 to 25 kt becoming north
10 to 20 kt. waves 2 to 4 ft. 
.wednesday...north winds 10 to 20 kt increasing to 15 to 25 kt.
waves 2 to 4 ft. 
.wednesday night...northeast winds 10 to 20 kt diminishing to
10 to 15 kt. waves 1 to 3 ft. 
.thursday...northeast winds 10 to 15 kt increasing to 10 to
20 kt. waves 1 to 3 ft. 
.thursday night...northeast winds 10 to 20 kt becoming east 10 to
15 kt. waves 1 to 3 ft. 
.friday...east winds 10 to 20 kt becoming northeast 15 to 25 kt.
waves 1 to 3 ft building to 3 to 5 ft. 
.friday night...east winds 15 to 25 kt increasing to 30 kt.
chance of showers. waves 4 to 6 ft occasionally to 8 ft. 
.saturday...east winds to 30 kt becoming northeast. chance of
showers. waves 4 to 6 ft occasionally to 8 ft. 
.sunday...southwest winds 10 to 15 kt. waves 1 ft or less.  

$$

fzus63 kmqt 200201
glfls 
expires:202605200800;;322221

open lake forecast for lake superior
national weather service marquette mi
1001 pm edt tue may 19 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... 

a 30.3 inch high over the northern plains builds to 30.4 inches 
tonight into wednesday as it tracks eastward into the upper great 
lakes. the high pressure shifts east on thursday while leaving 
lingering ridging of at least 30.3 inches over lake superior through 
friday. a 29.9 inch low then lifts into the lower great lakes from 
the southern plains friday night and saturday, but 30.1 inch ridging 
could persists over lake superior the remainder of the weekend.



lsz162-200800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1001 pm edt tue may 19 2026 /901 pm cdt tue may 19 2026/

.rest of tonight...northwest winds 10 to 20 knots diminishing to
5 to 15 knots after midnight. waves calm to 2 feet. 
.wednesday...west winds 5 to 15 knots backing south in the
afternoon. waves calm to 2 feet. 
.wednesday night...southeast winds 5 to 15 knots backing
northeast after midnight. waves calm to 2 feet. 
.thursday...east winds 5 to 15 knots. waves calm to 2 feet. 
.thursday night...east winds 5 to 15 knots. waves calm to 2 feet.
.friday...east winds 10 to 20 knots becoming northeast 15 to
25 knots by mid afternoon. waves building to 2 to 4 feet. 
.friday night...northeast winds 10 to 20 knots. a chance of rain
showers. waves subsiding to 1 to 3 feet. 
.saturday...northeast winds 10 to 20 knots diminishing to 5 to
15 knots. a chance of rain showers. waves subsiding to calm to
2 feet. 
.sunday...southwest winds 5 to 15 knots. waves calm to 2 feet. 

$$

fzus63 kmqt 200201
glfls 
expires:202605200800;;322222

open lake forecast for lake superior
national weather service marquette mi
1001 pm edt tue may 19 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... 

a 30.3 inch high over the northern plains builds to 30.4 inches 
tonight into wednesday as it tracks eastward into the upper great 
lakes. the high pressure shifts east on thursday while leaving 
lingering ridging of at least 30.3 inches over lake superior through 
friday. a 29.9 inch low then lifts into the lower great lakes from 
the southern plains friday night and saturday, but 30.1 inch ridging 
could persists over lake superior the remainder of the weekend.



lsz263-200800-
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 tue may 19 2026

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

$$

fzus63 kmqt 200201
glfls 
expires:202605200800;;322223

open lake forecast for lake superior
national weather service marquette mi
1001 pm edt tue may 19 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... 

a 30.3 inch high over the northern plains builds to 30.4 inches 
tonight into wednesday as it tracks eastward into the upper great 
lakes. the high pressure shifts east on thursday while leaving 
lingering ridging of at least 30.3 inches over lake superior through 
friday. a 29.9 inch low then lifts into the lower great lakes from 
the southern plains friday night and saturday, but 30.1 inch ridging 
could persists over lake superior the remainder of the weekend.



lsz264-200800-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
1001 pm edt tue may 19 2026

.rest of tonight...northwest winds 10 to 20 knots. waves 2 to
4 feet subsiding to 1 to 3 feet. 
.wednesday...northwest winds 5 to 15 knots backing southwest
late. waves subsiding to calm to 2 feet. 
.wednesday night...southwest winds 5 to 15 knots backing south
after midnight. waves calm to 2 feet. 
.thursday...south winds 5 to 15 knots backing southeast by mid
afternoon. waves calm to 2 feet. 
.thursday night...southeast winds 5 to 15 knots veering south
after midnight. waves calm to 2 feet. 
.friday...southeast winds 5 to 15 knots backing east by mid
afternoon. waves calm to 2 feet. 
.friday night...east winds 5 to 15 knots. waves building to 1 to
3 feet. 
.saturday...east winds 10 to 20 knots becoming southeast 5 to
15 knots. a chance of rain showers. waves building to 2 to
4 feet, then subsiding to calm to 2 feet. 
.sunday...southwest winds 5 to 15 knots. waves calm to 2 feet. 

$$

fzus63 kmqt 200201
glfls 
expires:202605200800;;322224

open lake forecast for lake superior
national weather service marquette mi
1001 pm edt tue may 19 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... 

a 30.3 inch high over the northern plains builds to 30.4 inches 
tonight into wednesday as it tracks eastward into the upper great 
lakes. the high pressure shifts east on thursday while leaving 
lingering ridging of at least 30.3 inches over lake superior through 
friday. a 29.9 inch low then lifts into the lower great lakes from 
the southern plains friday night and saturday, but 30.1 inch ridging 
could persists over lake superior the remainder of the weekend.



lsz265-200800-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
1001 pm edt tue may 19 2026

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

$$

fzus63 kmqt 200201
glfls 
expires:202605200800;;322225

open lake forecast for lake superior
national weather service marquette mi
1001 pm edt tue may 19 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... 

a 30.3 inch high over the northern plains builds to 30.4 inches 
tonight into wednesday as it tracks eastward into the upper great 
lakes. the high pressure shifts east on thursday while leaving 
lingering ridging of at least 30.3 inches over lake superior through 
friday. a 29.9 inch low then lifts into the lower great lakes from 
the southern plains friday night and saturday, but 30.1 inch ridging 
could persists over lake superior the remainder of the weekend.



lsz266-200800-
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 tue may 19 2026

.rest of tonight...northwest winds 20 to 30 knots diminishing to
15 to 25 knots late. waves 3 to 6 feet occasionally to 8 feet. 
.wednesday...northwest winds 10 to 20 knots diminishing to 5 to
15 knots in the afternoon, then backing west late. waves
subsiding to 1 to 3 feet. 
.wednesday night...west winds 5 to 15 knots backing south after
midnight. waves subsiding to calm to 2 feet. 
.thursday...south winds 5 to 15 knots becoming east 10 to
20 knots by mid afternoon. waves building to 1 to 3 feet. 
.thursday night...southeast winds 10 to 20 knots veering south
after midnight. waves subsiding to calm to 2 feet. 
.friday...southeast winds 10 to 20 knots backing east by mid
afternoon. waves building to 1 to 3 feet. 
.friday night...east winds 10 to 20 knots. waves building to 2 to
4 feet. 
.saturday...east winds 15 to 25 knots becoming southeast 10 to
20 knots. a chance of rain showers. waves building to 3 to 5 feet
occasionally to 7 feet, then subsiding to 1 to 3 feet. 
.sunday...west winds 5 to 15 knots backing southwest. waves
subsiding to calm to 2 feet. 

$$

fzus63 kmqt 200201
glfls 
expires:202605200800;;322226

open lake forecast for lake superior
national weather service marquette mi
1001 pm edt tue may 19 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... 

a 30.3 inch high over the northern plains builds to 30.4 inches 
tonight into wednesday as it tracks eastward into the upper great 
lakes. the high pressure shifts east on thursday while leaving 
lingering ridging of at least 30.3 inches over lake superior through 
friday. a 29.9 inch low then lifts into the lower great lakes from 
the southern plains friday night and saturday, but 30.1 inch ridging 
could persists over lake superior the remainder of the weekend.



lsz267-200800-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
1001 pm edt tue may 19 2026

.rest of tonight...northwest winds 20 to 30 knots. waves 3 to
6 feet occasionally to 8 feet. 
.wednesday...northwest winds 15 to 25 knots diminishing to 10 to
20 knots late. waves subsiding to 1 to 3 feet. 
.wednesday night...northwest winds 5 to 15 knots veering north
after midnight, then becoming west less than 10 knots late. waves
subsiding to calm to 2 feet. 
.thursday...south winds 5 to 15 knots backing east by mid
afternoon. waves calm to 2 feet. 
.thursday night...southeast winds 5 to 15 knots increasing to
10 to 20 knots after midnight. waves calm to 2 feet. 
.friday...southeast winds 5 to 15 knots backing east by mid
afternoon. waves calm to 2 feet. 
.friday night...east winds 10 to 20 knots increasing to 15 to
25 knots after midnight. waves building to 1 to 3 feet. 
.saturday...east winds 15 to 25 knots becoming southeast 10 to
20 knots. a chance of rain showers. waves building to 2 to
4 feet, then subsiding to calm to 2 feet. 
.sunday...west winds 5 to 15 knots backing southwest. waves calm
to 2 feet. 

$$