fzus61 kbuf 170203
glflo 
expires:202607170900;;094173

open lake forecast for lake ontario
national weather service buffalo ny
1003 pm edt thu jul 16 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 cold front moves southward across lake ontario this evening. 
behind the front, a ridge averaging 30.1 inches builds from the 
upper great lakes through friday. a warm front should sweep 
northeastward across lake ontario friday night through saturday 
morning as the ridge exits toward new england and a 29.7 inch low 
moves eastward across the northwestern great lakes. later on 
saturday, a cold front should move eastward across lake ontario as 
the low moves farther eastward toward southern quebec. behind the 
low and cold front, a 29.9 inch ridge should slide southeastward 
across the great lakes through monday. a warm front should sweep 
northeastward across lake ontario monday night and a cold front 
should sweep eastward across the lake on tuesday as a 29.5 inch low 
moves eastward across northern ontario and northern quebec.


loz062-170900-
lake ontario open waters from the niagara river to hamlin beach-
1003 pm edt thu jul 16 2026

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

winds and waves higher in and near thunderstorms.

$$

fzus61 kbuf 170203
glflo 
expires:202607170900;;094174

open lake forecast for lake ontario
national weather service buffalo ny
1003 pm edt thu jul 16 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 cold front moves southward across lake ontario this evening. 
behind the front, a ridge averaging 30.1 inches builds from the 
upper great lakes through friday. a warm front should sweep 
northeastward across lake ontario friday night through saturday 
morning as the ridge exits toward new england and a 29.7 inch low 
moves eastward across the northwestern great lakes. later on 
saturday, a cold front should move eastward across lake ontario as 
the low moves farther eastward toward southern quebec. behind the 
low and cold front, a 29.9 inch ridge should slide southeastward 
across the great lakes through monday. a warm front should sweep 
northeastward across lake ontario monday night and a cold front 
should sweep eastward across the lake on tuesday as a 29.5 inch low 
moves eastward across northern ontario and northern quebec.


loz063>065-170900-
lake ontario open waters from hamlin beach to the saint lawrence
river-
1003 pm edt thu jul 16 2026

.overnight...north winds 15 to 20 knots becoming northeast
10 to 15 knots. areas of smoke. waves 2 to 4 feet subsiding to
1 to 3 feet. 
.friday...northeast winds 10 knots or less becoming east. waves
2 feet or less. 
.friday night...southeast winds 5 to 15 knots becoming south.
smoke. waves 2 feet or less. 
.saturday...south winds 15 to 20 knots becoming southwest. patchy
smoke in the morning. showers likely in the morning, then showers
with thunderstorms likely in the afternoon. waves 1 to 3 feet. 
.saturday night...west winds 15 to 20 knots becoming north.
showers with thunderstorms likely in the evening, then showers
likely overnight. waves 2 to 4 feet building to 3 to 5 feet. 
.sunday...northwest winds 15 to 20 knots becoming west and
diminishing to 5 to 10 knots. waves 3 to 5 feet subsiding to
1 foot or less. 
.monday...southwest winds 5 to 10 knots becoming south and
increasing to 15 to 20 knots. a chance of showers monday night.
waves 1 foot or less building to 1 to 3 feet. 
.tuesday...southwest winds 15 to 25 knots becoming west. showers
likely. waves 2 to 4 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 170130
glfle 
expires:202607170815;;093658

open lake forecast for lake erie
national weather service cleveland oh
930 pm edt thu jul 16 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...
high pressure 30.10 inches exits the region friday morning as a
warm front approaches from the west. the warm front will lift 
east across lake erie friday night into early saturday. a cold 
front will sink south across the lake on saturday night. high 
pressure 30.00 inches briefly returns sunday into monday before 
another cold front moves across the region on tuesday.


lez162-163-170815-
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-
930 pm edt thu jul 16 2026

...dense smoke advisory in effect until 4 am edt friday...

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

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 170130
glfle 
expires:202607170815;;093659

open lake forecast for lake erie
national weather service cleveland oh
930 pm edt thu jul 16 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...
high pressure 30.10 inches exits the region friday morning as a
warm front approaches from the west. the warm front will lift 
east across lake erie friday night into early saturday. a cold 
front will sink south across the lake on saturday night. high 
pressure 30.00 inches briefly returns sunday into monday before 
another cold front moves across the region on tuesday.


lez164>166-170815-
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-
930 pm edt thu jul 16 2026

...dense smoke advisory in effect until 4 am edt friday...

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

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 170130
glfle 
expires:202607170815;;093660

open lake forecast for lake erie
national weather service cleveland oh
930 pm edt thu jul 16 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...
high pressure 30.10 inches exits the region friday morning as a
warm front approaches from the west. the warm front will lift 
east across lake erie friday night into early saturday. a cold 
front will sink south across the lake on saturday night. high 
pressure 30.00 inches briefly returns sunday into monday before 
another cold front moves across the region on tuesday.


lez061-167>169-170815-
ripley to buffalo ny extending from 5nm 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-
conneaut oh to ripley ny beyond 5 nm off shoreline to us-
canadian border-
930 pm edt thu jul 16 2026

...dense smoke advisory in effect until 4 am edt friday...

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

winds and waves higher in and near thunderstorms.

$$

fzus63 kdtx 170139
glfsc 
expires:202607170945;;093883

lake st clair forecast
national weather service detroit/pontiac mi
939 pm edt thu jul 16 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...canadian wildfire smoke persists tonight amidst high
pressure influence. the next weak low pressure systems arrive
friday bringing a round of showers and thunderstorms late in the
day and overnight. this will be followed by a secondary low on
saturday tracking across the straits into northern lake huron
with additional unsettled weather.


lcz460-170945-
lake st clair-
939 pm edt thu jul 16 2026

...dense smoke advisory in effect until 4 pm edt friday...

.rest of tonight...east winds 5 to 10 knots by midnight becoming
light and variable. cloudy...smoke. waves 2 feet or less.
.friday...light and variable winds becoming southeast 10 to 15
knots. cloudy in the morning becoming mostly sunny. smoke. waves 2
feet or less.
.friday night...south winds 10 to 15 knots veering to the southwest
after midnight. mostly clear. smoke early in the evening...then
areas of smoke by midnight. waves 2 feet or less.
.saturday...southwest winds 10 to 15 knots becoming west 15 to 20
knots early in the afternoon. a chance of light showers until late
afternoon...then showers and a chance of thunderstorms early in the
afternoon. waves 1 to 3 feet.
.saturday night...north winds 15 to 20 knots. showers and a chance
of thunderstorms early in the evening. waves 1 to 3 feet.
.sunday...north winds 10 to 15 knots becoming northeast 5 to 10
knots in the afternoon and evening. sunny becoming mostly clear.
waves 2 feet or less.
.monday...south winds 15 to 20 knots. partly cloudy. showers likely
and a chance of thunderstorms. waves 2 feet or less.
.tuesday...northwest winds 15 to 20 knots. partly cloudy. showers
likely and a chance of thunderstorms. waves 1 to 3 feet.

$$

fzus63 kdtx 170138
glflh 
expires:202607170945;;093820

open lake forecast for lake huron
national weather service detroit/pontiac mi
938 pm edt thu jul 16 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...canadian wildfire smoke persists tonight amidst high
pressure influence. the next weak low pressure systems arrive
friday bringing a round of showers and thunderstorms late in the
day and overnight. this will be followed by a secondary low on
saturday tracking across the straits into northern lake huron
with additional unsettled weather.


lhz462>464-170945-
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-
938 pm edt thu jul 16 2026

...dense smoke advisory in effect until 4 pm edt friday...

.rest of tonight...light and variable winds. smoke. waves 1 to
3 feet. 
.friday...light and variable winds becoming southeast 5 to
10 knots late in the afternoon. smoke. waves 2 feet or less. 
.friday night...east winds 5 to 10 knots becoming south 10 to
15 knots in the late evening and overnight. smoke in the
evening...then areas of smoke after midnight. a chance of showers
after midnight. waves 1 to 3 feet building to 2 to 4 feet after
midnight. 
.saturday...southwest winds 10 to 15 knots becoming west 15 to
20 knots with gusts to around 30 knots early in the afternoon.
showers and a chance of thunderstorms in the morning...then
showers likely and a chance of thunderstorms in the afternoon.
waves 2 to 4 feet. 
.saturday night...north winds 20 to 25 knots with gusts to around
30 knots decreasing to 10 to 15 knots. waves 5 to 7 feet. waves
occasionally around 10 feet. 
.sunday...north winds 10 to 15 knots decreasing to 5 to 10 knots
late in the morning...then becoming light and variable late in
the afternoon becoming south 5 to 10 knots late in the evening.
waves 3 to 5 feet subsiding to 2 feet or less late in the
afternoon. 
.monday...south winds 10 to 15 knots becoming southwest 15 to
20 knots . showers likely and a chance of thunderstorms by
midnight. waves 1 to 3 feet building to 3 to 5 feet . 
.tuesday...southwest winds 15 to 20 knots becoming northwest
10 to 15 knots in the late morning and early afternoon...then
increasing to 15 to 20 knots with gusts to around 30 knots . a
chance of showers. waves 3 to 5 feet building to 5 to 7 feet by
midnight. waves occasionally around 10 feet. 


$$

fzus63 kdtx 170138
glflh 
expires:202607170945;;093819

open lake forecast for lake huron
national weather service detroit/pontiac mi
938 pm edt thu jul 16 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...canadian wildfire smoke persists tonight amidst high
pressure influence. the next weak low pressure systems arrive
friday bringing a round of showers and thunderstorms late in the
day and overnight. this will be followed by a secondary low on
saturday tracking across the straits into northern lake huron
with additional unsettled weather.


lhz362-363-170945-
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-
938 pm edt thu jul 16 2026

...dense smoke advisory in effect until 4 pm edt friday...

.rest of tonight...northwest winds 10 to 15 knots by midnight
becoming light and variable. smoke. waves 2 to 4 feet subsiding
to 1 to 3 feet after midnight. 
.friday...light and variable winds becoming southeast 5 to
10 knots in the afternoon. smoke. waves 2 feet or less. 
.friday night...southeast winds 10 to 15 knots veering to the
south after midnight. a chance of thunderstorms in the evening...
then a chance of showers after midnight. areas of smoke in the
evening...then smoke after midnight. waves 1 to 3 feet building
to 2 to 4 feet in the late evening and overnight. 
.saturday...southwest winds 10 to 15 knots becoming northwest
15 to 20 knots with gusts to around 30 knots early in the
afternoon. showers likely in the morning...then a chance of
showers and thunderstorms in the afternoon. waves 4 to 6 feet.
waves occasionally around 8 feet. 
.saturday night...northwest winds 20 to 25 knots with gusts to
around 30 knots becoming north 10 to 15 knots. waves 5 to 7 feet.
waves occasionally around 10 feet. 
.sunday...north winds 5 to 10 knots in the morning becoming light
and variable...then becoming east 5 to 10 knots late in the
afternoon veering to the south. waves 2 to 4 feet subsiding to
1 to 3 feet. 
.monday...south winds 10 to 15 knots increasing to 15 to 20 knots
with gusts to around 30 knots . a chance of showers in the late
morning and early afternoon. rain showers . waves 2 to 4 feet
building to 4 to 6 feet. waves occasionally around 8 feet. 
.tuesday...west winds 15 to 20 knots becoming northwest 10 to
15 knots in the late morning and early afternoon...then
increasing to 15 to 20 knots with gusts to around 30 knots early
in the evening increasing to 20 to 25 knots with gusts to around
30 knots by midnight. a chance of showers. waves 6 to 9 feet.
waves occasionally around 12 feet. 


$$

fzus63 kdtx 170138
glflh 
expires:202607170945;;093818

open lake forecast for lake huron
national weather service detroit/pontiac mi
938 pm edt thu jul 16 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...canadian wildfire smoke persists tonight amidst high
pressure influence. the next weak low pressure systems arrive
friday bringing a round of showers and thunderstorms late in the
day and overnight. this will be followed by a secondary low on
saturday tracking across the straits into northern lake huron
with additional unsettled weather.


lhz361-170945-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
938 pm edt thu jul 16 2026

...dense smoke advisory in effect until 9 am edt friday...

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


$$

fzus63 kmkx 170158
glflm 
expires:202607170915;;093978

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
858 pm cdt thu jul 16 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...

wildfire smoke from northern mn and northwestern ontario continues 
across all open waters of lake michigan and will reduce visibility
to 1 nm or less at times. thus a marine dense smoke advisory 
continues today through friday for all open waters.

lighter winds continue this evening as high pressure around 30.1 
inches gradually exits the region ahead of an incoming low 
pressure around 29.7 inches tracking in from the northern plains. 
this low pressure will shift winds across lake michigan to the 
southwest on friday and continue to push across ontario later 
friday through saturday dragging a cold front across the lake 
through saturday morning. northerly winds will develop behind this
frontal passage through the day saturday along with high pressure
around 30.0 inches. the high will then work its way across the 
upper great through the day sunday and departing to the east 
overnight sunday while another deepening low tracks across ontario
for the start of next week. expect more southerly wind for monday
before another, stronger cold front pushes through the region by 
tuesday.

additionally will see periodic shower and thunderstorm chances 
across the lake heading into the weekend through the start of next
week.


lmz261-362-364-366-563-565-567-868-170915-
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-
858 pm cdt thu jul 16 2026

sheboygan wi to pentwater mi north...

...dense smoke advisory in effect until 7 pm cdt friday...

.rest of tonight...north winds 5 to 10 kt veering to east. smoke.
waves 1 ft or less. 
.friday...southeast winds 5 to 10 kt increasing to 10 to 20 kt.
smoke. slight chance of showers. waves 1 to 2 ft. 
.friday night...south winds 10 to 20 kt becoming west 15 to
25 kt. smoke in the evening, then patchy smoke overnight. chance
of showers and thunderstorms in the evening, then scattered
showers and thunderstorms overnight. waves 3 to 5 ft.
.saturday...northwest winds to 30 kt becoming north. patchy smoke
in the morning. waves 4 to 6 ft occasionally to 8 ft. 
.saturday night...north winds to 30 kt diminishing to 10 to 20 kt
overnight. waves 4 to 6 ft occasionally to 8 ft. 
.sunday...northeast winds 10 to 15 kt backing to southwest 10 to
20 kt. waves 1 to 3 ft subsiding to 1 to 2 ft. 
.sunday night...south winds 10 to 20 kt becoming southwest to
30 kt. waves 1 to 2 ft building to 2 to 4 ft. 
.monday...southwest winds to 30 kt increasing to gales to 35 kt.
chance of showers and thunderstorms. waves 4 to 6 ft occasionally
to 8 ft building to 4 to 7 ft occasionally to 9 ft. 
.tuesday...northwest winds to 30 kt increasing to gales to 35 kt.
waves 4 to 6 ft occasionally to 8 ft building to 4 to 7 ft
occasionally to 9 ft.  

$$

fzus63 kmkx 170158
glflm 
expires:202607170915;;093979

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
858 pm cdt thu jul 16 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...

wildfire smoke from northern mn and northwestern ontario continues 
across all open waters of lake michigan and will reduce visibility
to 1 nm or less at times. thus a marine dense smoke advisory 
continues today through friday for all open waters.

lighter winds continue this evening as high pressure around 30.1 
inches gradually exits the region ahead of an incoming low 
pressure around 29.7 inches tracking in from the northern plains. 
this low pressure will shift winds across lake michigan to the 
southwest on friday and continue to push across ontario later 
friday through saturday dragging a cold front across the lake 
through saturday morning. northerly winds will develop behind this
frontal passage through the day saturday along with high pressure
around 30.0 inches. the high will then work its way across the 
upper great through the day sunday and departing to the east 
overnight sunday while another deepening low tracks across ontario
for the start of next week. expect more southerly wind for monday
before another, stronger cold front pushes through the region by 
tuesday.

additionally will see periodic shower and thunderstorm chances 
across the lake heading into the weekend through the start of next
week.


lmz080-669-671-673-675-777-779-870-872-874-876-878-170915-
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-
858 pm cdt thu jul 16 2026

sheboygan wi to pentwater mi south...

...dense smoke advisory in effect until 7 pm cdt friday...

.rest of tonight...northeast winds 10 to 15 kt becoming east.
smoke. waves 1 to 2 ft. 
.friday...southeast winds 5 to 10 kt becoming south. smoke. waves
1 to 2 ft. 
.friday night...south winds 10 to 20 kt becoming southwest. waves
3 to 5 ft. 
.saturday...west winds 15 to 25 kt veering to north to 30 kt.
scattered showers. waves 3 to 5 ft building to 4 to 6 ft
occasionally to 8 ft. 
.saturday night...north winds to 30 kt becoming northeast 15 to
25 kt. waves 4 to 7 ft occasionally to 9 ft. 
.sunday...northeast winds 10 to 15 kt becoming north 10 to 20 kt.
waves 3 to 5 ft subsiding to 1 to 3 ft. 
.sunday night...east winds 10 to 20 kt veering to south. waves
1 to 3 ft. 
.monday...southwest winds 15 to 25 kt becoming south to 30 kt.
waves 3 to 5 ft building to 4 to 7 ft occasionally to 9 ft. 
.tuesday...northwest winds to 30 kt becoming north gales to
35 kt. waves 4 to 7 ft occasionally to 9 ft building to 5 to 8 ft
occasionally to 10 ft.  

$$

fzus63 kmqt 170201
glfls 
expires:202607170800;;094074

open lake forecast for lake superior
national weather service marquette mi
1000 pm edt thu jul 16 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... 

30.1 inch high pressure persists over lake superior into friday 
while gradually shifting east towards the st. lawrence seaway. low 
pressure passing through the northern plains looks to traverse the 
the lake at around 29.7 inches friday evening into saturday morning. 
weak ridging of 29.9 to 30.0 inches returns late saturday and 
remains through sunday. a strong low ranging from 29.3 to 29.5 
inches over northern ontario looks to bring 29.6 inch troughing over 
lake superior on monday.




lsz264-170800-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
1000 pm edt thu jul 16 2026

...dense smoke advisory in effect until 8 pm edt friday...

.rest of tonight...south winds less than 10 knots increasing to
5 to 15 knots after midnight, then backing southeast late. smoke.
a chance of showers after midnight. waves calm to 2 feet. 
.friday...southeast winds 5 to 15 knots. smoke. showers through
early afternoon. a chance of thunderstorms. a chance of showers
by mid afternoon. waves calm to 2 feet. 
.friday night...east winds 5 to 15 knots backing north after
midnight. smoke. a chance of showers and thunderstorms. waves
calm to 2 feet. 
.saturday...northwest winds 5 to 15 knots backing west by mid
afternoon. patchy smoke through early afternoon. waves calm to
2 feet. 
.saturday night...west winds 5 to 15 knots backing southwest
after midnight. waves calm to 2 feet. 
.sunday...south winds 5 to 15 knots. waves calm to 2 feet. 
.sunday night...south winds 10 to 20 knots becoming southwest
15 to 25 knots after midnight. a chance of showers. waves
building to 2 to 4 feet. 
.monday...southwest winds 15 to 25 knots veering northwest. a
chance of showers. waves building to 3 to 5 feet occasionally to
7 feet, then subsiding to 2 to 4 feet. 
.tuesday...northwest winds 20 to 30 knots diminishing to 5 to
15 knots. waves subsiding to calm to 2 feet. 

$$

fzus63 kmqt 170201
glfls 
expires:202607170800;;094075

open lake forecast for lake superior
national weather service marquette mi
1000 pm edt thu jul 16 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... 

30.1 inch high pressure persists over lake superior into friday 
while gradually shifting east towards the st. lawrence seaway. low 
pressure passing through the northern plains looks to traverse the 
the lake at around 29.7 inches friday evening into saturday morning. 
weak ridging of 29.9 to 30.0 inches returns late saturday and 
remains through sunday. a strong low ranging from 29.3 to 29.5 
inches over northern ontario looks to bring 29.6 inch troughing over 
lake superior on monday.




lsz265-170800-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
1000 pm edt thu jul 16 2026

...dense smoke advisory in effect until 8 pm edt friday...

.rest of tonight...south winds 5 to 15 knots becoming southeast
10 to 20 knots late. smoke. a slight chance of showers after
midnight. waves calm to 2 feet. 
.friday...southeast winds 10 to 20 knots. smoke. showers and a
chance of thunderstorms. waves building to 1 to 3 feet. 
.friday night...southeast winds 10 to 20 knots becoming northwest
15 to 25 knots after midnight. smoke. a chance of showers and
thunderstorms. waves subsiding to calm to 2 feet, then building
to 2 to 4 feet. 
.saturday...northwest winds 20 to 30 knots diminishing to 15 to
25 knots by mid afternoon. areas of smoke through early
afternoon. waves subsiding to 1 to 3 feet. 
.saturday night...northwest winds 10 to 20 knots becoming west
5 to 15 knots after midnight. waves subsiding to calm to 2 feet. 
.sunday...south winds 5 to 15 knots becoming southeast 10 to
20 knots by mid afternoon. waves calm to 2 feet. 
.sunday night...south winds 10 to 20 knots becoming southwest
20 to 30 knots after midnight. waves building to 2 to 4 feet. 
.monday...west winds 20 to 30 knots becoming northwest gales to
35 knots. a chance of showers. waves building to 5 to 8 feet
occasionally to 10 feet. 
.tuesday...northwest gales to 40 knots diminishing to 20 to
30 knots. waves building to 7 to 10 feet occasionally to 13 feet,
then subsiding to 1 to 3 feet. 

$$

fzus63 kmqt 170201
glfls 
expires:202607170800;;094072

open lake forecast for lake superior
national weather service marquette mi
1000 pm edt thu jul 16 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... 

30.1 inch high pressure persists over lake superior into friday 
while gradually shifting east towards the st. lawrence seaway. low 
pressure passing through the northern plains looks to traverse the 
the lake at around 29.7 inches friday evening into saturday morning. 
weak ridging of 29.9 to 30.0 inches returns late saturday and 
remains through sunday. a strong low ranging from 29.3 to 29.5 
inches over northern ontario looks to bring 29.6 inch troughing over 
lake superior on monday.




lsz162-170800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1000 pm edt thu jul 16 2026 /900 pm cdt thu jul 16 2026/

...dense smoke advisory in effect until 8 pm edt /7 pm cdt/
friday...

.rest of tonight...northeast winds 5 to 15 knots. smoke. a chance
of showers and a slight chance of thunderstorms after midnight.
waves calm to 2 feet. 
.friday...northeast winds 5 to 15 knots veering east in the
afternoon, then backing northeast late. smoke. a chance of
showers and a slight chance of thunderstorms. waves calm to
2 feet. 
.friday night...northeast winds 5 to 15 knots backing northwest
after midnight, then becoming west 10 to 20 knots late. a chance
of showers and a slight chance of thunderstorms through midnight.
smoke. waves calm to 2 feet. 
.saturday...northwest winds 5 to 15 knots backing southwest by
mid afternoon. areas of smoke through early afternoon. waves calm
to 2 feet. 
.saturday night...west winds 5 to 15 knots. waves 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 increasing to 10 to
20 knots after midnight. a chance of showers after midnight.
waves calm to 2 feet. 
.monday...southwest winds 15 to 25 knots veering northwest. a
chance of showers. waves building to 2 to 4 feet, then subsiding
to 1 to 3 feet. 
.tuesday...northwest winds 15 to 25 knots diminishing to 5 to
15 knots. waves subsiding to calm to 2 feet. 

$$

fzus63 kmqt 170201
glfls 
expires:202607170800;;094077

open lake forecast for lake superior
national weather service marquette mi
1000 pm edt thu jul 16 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... 

30.1 inch high pressure persists over lake superior into friday 
while gradually shifting east towards the st. lawrence seaway. low 
pressure passing through the northern plains looks to traverse the 
the lake at around 29.7 inches friday evening into saturday morning. 
weak ridging of 29.9 to 30.0 inches returns late saturday and 
remains through sunday. a strong low ranging from 29.3 to 29.5 
inches over northern ontario looks to bring 29.6 inch troughing over 
lake superior on monday.




lsz267-170800-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
1000 pm edt thu jul 16 2026

...dense smoke advisory in effect until 8 pm edt friday...

.rest of tonight...west winds 5 to 15 knots becoming southeast
less than 10 knots late. smoke. waves calm to 2 feet. 
.friday...southeast winds 5 to 15 knots increasing to 10 to
20 knots in the afternoon. smoke. a chance of showers through
early afternoon. showers likely and a slight chance of
thunderstorms by mid afternoon. waves calm to 2 feet. 
.friday night...southeast winds 10 to 20 knots veering south
after midnight, then veering northwest late. areas of smoke.
showers through midnight. a chance of thunderstorms. a chance of
showers after midnight. waves building to 1 to 3 feet. 
.saturday...northwest winds 15 to 25 knots. areas of smoke
through early afternoon. waves building to 2 to 4 feet. 
.saturday night...northwest winds 10 to 20 knots becoming north
5 to 15 knots after midnight. waves subsiding to calm to 2 feet. 
.sunday...south winds 5 to 15 knots backing southeast by mid
afternoon. waves calm to 2 feet. 
.sunday night...south winds 10 to 20 knots increasing to 15 to
25 knots after midnight. waves building to 2 to 4 feet. 
.monday...southwest winds 15 to 25 knots veering west. showers
likely. a chance of thunderstorms. waves subsiding to 1 to
3 feet, then building to 3 to 5 feet occasionally to 7 feet. 
.tuesday...northwest winds 20 to 30 knots diminishing to 15 to
25 knots. waves building to 6 to 9 feet occasionally to 11 feet,
then subsiding to 2 to 4 feet. 

$$

fzus63 kmqt 170201
glfls 
expires:202607170800;;094076

open lake forecast for lake superior
national weather service marquette mi
1000 pm edt thu jul 16 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... 

30.1 inch high pressure persists over lake superior into friday 
while gradually shifting east towards the st. lawrence seaway. low 
pressure passing through the northern plains looks to traverse the 
the lake at around 29.7 inches friday evening into saturday morning. 
weak ridging of 29.9 to 30.0 inches returns late saturday and 
remains through sunday. a strong low ranging from 29.3 to 29.5 
inches over northern ontario looks to bring 29.6 inch troughing over 
lake superior on monday.




lsz266-170800-
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 thu jul 16 2026

...dense smoke advisory in effect until 8 pm edt friday...

.rest of tonight...southwest winds 5 to 15 knots backing
southeast late. smoke. a slight chance of showers after midnight.
waves calm to 2 feet. 
.friday...southeast winds 10 to 20 knots increasing to 15 to
25 knots late. smoke. showers likely through early afternoon. a
chance of thunderstorms. a chance of showers by mid afternoon.
waves building to 1 to 3 feet. 
.friday night...southeast winds 10 to 20 knots veering west after
midnight, then becoming northwest 15 to 25 knots late. smoke. a
chance of showers and thunderstorms. waves building to 2 to
4 feet. 
.saturday...northwest winds 15 to 25 knots. areas of smoke
through early afternoon. waves building to 3 to 5 feet
occasionally to 7 feet, then subsiding to 2 to 4 feet. 
.saturday night...northwest winds 10 to 20 knots becoming north
5 to 15 knots after midnight. waves subsiding to calm to 2 feet. 
.sunday...south winds 5 to 15 knots backing southeast by mid
afternoon. waves calm to 2 feet. 
.sunday night...south winds 10 to 20 knots becoming southwest
15 to 25 knots after midnight. waves building to 2 to 4 feet. 
.monday...southwest winds 15 to 25 knots becoming northwest gales
to 35 knots. showers likely. a chance of showers. waves building
to 3 to 5 feet occasionally to 7 feet, then subsiding to 2 to
4 feet. 
.tuesday...northwest gales to 40 knots diminishing to 15 to
25 knots. waves building to 7 to 10 feet occasionally to 13 feet,
then subsiding to 2 to 4 feet. 

$$

fzus63 kmqt 170201
glfls 
expires:202607170800;;094073

open lake forecast for lake superior
national weather service marquette mi
1000 pm edt thu jul 16 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... 

30.1 inch high pressure persists over lake superior into friday 
while gradually shifting east towards the st. lawrence seaway. low 
pressure passing through the northern plains looks to traverse the 
the lake at around 29.7 inches friday evening into saturday morning. 
weak ridging of 29.9 to 30.0 inches returns late saturday and 
remains through sunday. a strong low ranging from 29.3 to 29.5 
inches over northern ontario looks to bring 29.6 inch troughing over 
lake superior on monday.




lsz263-170800-
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 thu jul 16 2026

...dense smoke advisory in effect until 8 pm edt friday...

.rest of tonight...east winds 5 to 15 knots. smoke. a chance of
showers and a slight chance of thunderstorms after midnight.
waves calm to 2 feet. 
.friday...east winds 5 to 15 knots. smoke. a chance of showers
and thunderstorms. waves calm to 2 feet. 
.friday night...north winds 5 to 15 knots backing northwest late.
smoke. a chance of showers and thunderstorms. waves calm to
2 feet. 
.saturday...northwest winds 5 to 15 knots backing west by mid
afternoon. areas of smoke through early afternoon. waves calm to
2 feet. 
.saturday night...west winds 5 to 15 knots backing southwest
after midnight. waves calm to 2 feet. 
.sunday...southwest winds 5 to 15 knots backing south by mid
afternoon. waves calm to 2 feet. 
.sunday night...south winds 10 to 20 knots becoming southwest
20 to 30 knots after midnight. a chance of showers after
midnight. waves building to 2 to 4 feet. 
.monday...southwest winds 20 to 30 knots veering northwest. a
chance of showers. waves building to 3 to 5 feet occasionally to
7 feet, then subsiding to 2 to 4 feet. 
.tuesday...northwest winds 20 to 30 knots diminishing to 5 to
15 knots. waves subsiding to calm to 2 feet. 

$$