fzus61 kbuf 191041
glflo 
expires:202607191515;;228118

open lake forecast for lake ontario
national weather service buffalo ny
641 am edt sun jul 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...
a 30.0 inch area of high pressure will build across the great lakes 
from west to east through monday, followed by a warm front crossing 
the lake monday night and another cold front tuesday night, with 
these fronts attached to a 29.4 inch area of low pressure near james 
bay. a secondary cold front will cross the lake wednesday, with a 
30.1 inch high building across the lower great lakes region 
wednesday night through friday.


loz062-191515-
lake ontario open waters from the niagara river to hamlin beach-
641 am edt sun jul 19 2026

.today...north winds 5 to 15 knots becoming west. patchy smoke
early. waves 1 to 3 feet subsiding to 1 foot or less. 
.tonight...west winds 10 knots or less becoming north. waves
2 feet or less. 
.monday...light and variable winds becoming southeast 5 to
10 knots. waves 1 foot or less. 
.monday night...southeast winds 5 to 15 knots becoming south.
waves 2 feet or less. 
.tuesday...south winds 15 to 20 knots becoming west. showers with
a chance of thunderstorms. waves 2 to 4 feet building to 3 to
5 feet. 
.wednesday...northwest winds 15 to 25 knots. a chance of showers
during the day. waves 3 to 6 feet building to 4 to 7 feet, then
subsiding to 3 to 5 feet. waves occasionally around 9 feet. 
.thursday...northwest winds 5 to 15 knots becoming southwest.
waves 1 to 3 feet subsiding to 1 foot or less. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kbuf 191041
glflo 
expires:202607191515;;228119

open lake forecast for lake ontario
national weather service buffalo ny
641 am edt sun jul 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...
a 30.0 inch area of high pressure will build across the great lakes 
from west to east through monday, followed by a warm front crossing 
the lake monday night and another cold front tuesday night, with 
these fronts attached to a 29.4 inch area of low pressure near james 
bay. a secondary cold front will cross the lake wednesday, with a 
30.1 inch high building across the lower great lakes region 
wednesday night through friday.


loz063>065-191515-
lake ontario open waters from hamlin beach to the saint lawrence
river-
641 am edt sun jul 19 2026

.today...north winds 15 to 20 knots becoming west 5 to 15 knots.
patchy smoke early. waves 2 to 4 feet subsiding to 1 to 3 feet. 
.tonight...west winds 5 to 15 knots. waves 1 to 3 feet. 
.monday...west winds 10 knots or less becoming east. waves 1 foot
or less. 
.monday night...east winds 10 knots or less becoming south and
increasing to 15 to 20 knots overnight. waves 1 foot or less
building to 2 to 4 feet. 
.tuesday...south winds 15 to 20 knots becoming west. showers with
a chance of thunderstorms. waves 3 to 5 feet. 
.wednesday...west winds 15 to 25 knots becoming northwest.
showers likely during the day. waves 5 to 8 feet subsiding to
3 to 6 feet. waves occasionally around 10 feet. 
.thursday...northwest winds 5 to 15 knots becoming southwest.
waves 2 to 4 feet subsiding to 1 foot or less. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 191353
glfle 
expires:202607192015;;233946

open lake forecast for lake erie
national weather service cleveland oh
953 am edt sun jul 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...
high pressure 30.00 inches will persist over the region into
monday. a warm front will lift northeast across the area monday
night as low pressure 29.30 inches moves east near hudson bay. 
this low will extend a cold front across the area on wednesday, 
followed by high pressure 30.10 inches on thursday.


lez164>168-192015-
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-
953 am edt sun jul 19 2026

.rest of today...north winds 5 to 15 knots. patchy smoke late
this morning, then areas of smoke early this afternoon. patchy
smoke late. waves 1 to 3 feet. 
.tonight...north winds 10 knots or less. patchy smoke in the
evening. waves 1 foot or less. 
.monday...south winds 10 knots or less becoming southwest. waves
1 foot or less. 
.monday night...south winds 5 to 15 knots increasing to 15 to
20 knots. a chance of showers overnight. waves 1 foot or less
building to 2 to 4 feet. 
.tuesday...southwest winds 15 to 25 knots becoming northwest.
showers with a chance of thunderstorms. waves 4 to 7 feet
subsiding to 3 to 5 feet. waves occasionally around 9 feet. 
.wednesday...northwest winds 15 to 20 knots becoming north 10 to
15 knots. waves 3 to 6 feet subsiding to 1 to 3 feet. 
.thursday...north winds 10 knots or less becoming south. waves
2 feet or less. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 191353
glfle 
expires:202607192015;;233945

open lake forecast for lake erie
national weather service cleveland oh
953 am edt sun jul 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...
high pressure 30.00 inches will persist over the region into
monday. a warm front will lift northeast across the area monday
night as low pressure 29.30 inches moves east near hudson bay. 
this low will extend a cold front across the area on wednesday, 
followed by high pressure 30.10 inches on thursday.


lez162-163-192015-
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-
953 am edt sun jul 19 2026

.rest of today...northeast winds 10 knots or less becoming east.
patchy smoke, then areas of smoke late. waves 2 feet or less. 
.tonight...east winds 10 knots or less becoming southeast. areas
of smoke early, then patchy smoke from late evening on. waves
1 foot or less. 
.monday...south winds 5 to 10 knots. patchy smoke in the morning.
waves 1 foot or less. 
.monday night...south winds 10 to 15 knots becoming southwest
15 to 20 knots. showers likely with a chance of thunderstorms
overnight. waves 1 to 3 feet building to 2 to 4 feet. 
.tuesday...southwest winds 15 to 20 knots becoming northwest.
showers likely with a chance of thunderstorms during the day.
waves 2 to 4 feet. 
.wednesday...northwest winds 15 to 20 knots becoming north 5 to
15 knots. waves 2 to 4 feet subsiding to 1 to 3 feet. 
.thursday...northwest winds 10 knots or less becoming southwest.
waves 1 foot or less. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 191353
glfle 
expires:202607192015;;233947

open lake forecast for lake erie
national weather service cleveland oh
953 am edt sun jul 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...
high pressure 30.00 inches will persist over the region into
monday. a warm front will lift northeast across the area monday
night as low pressure 29.30 inches moves east near hudson bay. 
this low will extend a cold front across the area on wednesday, 
followed by high pressure 30.10 inches on thursday.


lez061-169-192015-
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-
953 am edt sun jul 19 2026

.rest of today...north winds 5 to 15 knots becoming northwest
less than 10 knots. patchy smoke. waves 2 feet or less. 
.tonight...west winds 10 knots or less becoming southwest. waves
1 foot or less. 
.monday...south winds 10 knots or less becoming west. waves
1 foot or less. 
.monday night...southwest winds 10 knots or less becoming south
10 to 15 knots. waves 1 to 3 feet. 
.tuesday...south winds 15 to 20 knots becoming northwest 10 to
15 knots. showers with a chance of thunderstorms. waves 2 to
4 feet building to 3 to 5 feet. 
.wednesday...northwest winds 15 to 20 knots diminishing to 10 to
15 knots. waves 3 to 5 feet subsiding to 1 to 3 feet. 
.thursday...northwest winds 10 knots or less becoming southwest.
waves 2 feet or less. 

winds and waves higher in and near thunderstorms.

$$

fzus63 kdtx 191336
glfsc 
expires:202607192200;;233467

lake st clair forecast
national weather service detroit/pontiac mi
936 am edt sun jul 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 passes over the great lakes today, then
exits into the mid-atlantic on monday as a cold front reaches the
western great lakes. this front will pass across the region
monday night into tuesday.


lcz460-192200-
lake st clair-
936 am edt sun jul 19 2026

.rest of today...north winds 5 to 10 knots. sunny. areas of smoke
late in the morning...then patchy smoke early in the afternoon.
waves 2 feet or less.
.tonight...northeast winds 5 to 10 knots this evening becoming light
and variable. mostly clear. waves 2 feet or less.
.monday...south winds 5 to 10 knots increasing to 10 to 15 knots
early in the afternoon. mostly sunny. waves 2 feet or less.
.monday night...south winds 10 to 15 knots increasing to 15 to 20
knots in the late evening and overnight. mostly cloudy. light
showers likely and a chance of thunderstorms after midnight. waves 1
to 3 feet.
.tuesday...southwest winds 20 to 25 knots becoming west 15 to 20
knots in the afternoon...then becoming northwest 20 to 25 knots in
the evening. becoming mostly clear in the evening. light showers
likely in the morning. a chance of thunderstorms. light showers in
the afternoon and evening. waves 2 to 4 feet subsiding to 1 to 3
feet in the afternoon and evening.
.wednesday...north winds 20 to 25 knots. mostly clear. waves 2 to 4
feet.
.thursday...southeast winds 5 to 10 knots. clear. waves 2 feet or
less.

$$

fzus63 kdtx 191336
glflh 
expires:202607192200;;233455

open lake forecast for lake huron
national weather service detroit/pontiac mi
936 am edt sun jul 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 passes over the great lakes today, then
exits into the mid-atlantic on monday as a cold front reaches the
western great lakes. this front will pass across the region
monday night into tuesday.


lhz363-462>464-192200-
lake huron from sturgeon point to alabaster mi beyond 5nm off
shore-
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-
936 am edt sun jul 19 2026

.rest of today...north winds 5 to 10 knots in the late morning
and early afternoon becoming light and variable. areas of smoke
late in the morning. waves 1 to 3 feet. 
.tonight...light and variable winds becoming south 5 to 10 knots
early in the morning. waves 2 feet or less. 
.monday...south winds 5 to 10 knots increasing to 10 to 15 knots
in the late morning and afternoon. waves 1 to 3 feet building to
4 to 6 feet early in the afternoon. waves occasionally around
8 feet. 
.monday night...south winds 15 to 20 knots with gusts to around
30 knots. showers likely in the evening...then showers and a
chance of thunderstorms after midnight. waves 5 to 7 feet. waves
occasionally around 10 feet. 
.tuesday...south winds 15 to 20 knots with gusts to around
30 knots becoming southwest 10 to 15 knots late in the morning...
then becoming northwest 15 to 20 knots with gusts to 35 knot
gales late in the afternoon increasing to 20 to 25 knots with
gusts to 35 knot gales late in the evening. showers. a chance of
thunderstorms late in the morning. waves 5 to 7 feet building to
10 to 14 feet late in the afternoon. waves occasionally around
18 feet. 
.wednesday...northwest winds 20 to 25 knots decreasing to 10 to
15 knots by midnight. gusts to 30 knots. waves 8 to 12 feet.
waves occasionally around 15 feet. 
.thursday...northwest winds 10 to 15 knots becoming west 5 to
10 knots in the late morning and early afternoon...then backing
to the south . waves 3 to 5 feet subsiding to 2 feet or less . 


$$

fzus63 kdtx 191336
glflh 
expires:202607192200;;233454

open lake forecast for lake huron
national weather service detroit/pontiac mi
936 am edt sun jul 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 passes over the great lakes today, then
exits into the mid-atlantic on monday as a cold front reaches the
western great lakes. this front will pass across the region
monday night into tuesday.


lhz361-362-192200-
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-
936 am edt sun jul 19 2026

.rest of today...light and variable winds. areas of smoke late in
the morning. waves 2 feet or less. 
.tonight...light and variable winds becoming south 5 to 10 knots
in the late evening and overnight. waves 2 feet or less. 
.monday...south winds 10 to 15 knots increasing to 15 to 20 knots
with gusts to around 30 knots early in the afternoon. a chance of
showers in the morning. waves 1 to 3 feet building to 4 to
6 feet. waves occasionally around 8 feet. 
.monday night...south winds 15 to 20 knots with gusts to around
30 knots. showers. waves 6 to 9 feet. waves occasionally around
12 feet. 
.tuesday...south winds 15 to 20 knots veering to the west with
gusts to around 30 knots late in the morning...then becoming
northwest to 30 knots with gusts to 35 knot gales late in the
afternoon. showers in the morning. a chance of showers late in
the morning. waves 6 to 9 feet building to 10 to 14 feet late in
the afternoon. waves occasionally around 18 feet. 
.wednesday...northwest winds to 30 knots with gusts to 35 knot
gales decreasing to 10 to 15 knots. waves 8 to 12 feet. waves
occasionally around 15 feet. 
.thursday...west winds 10 to 15 knots becoming southwest 5 to
10 knots until early evening...then backing to the south by
midnight. waves 3 to 5 feet subsiding to 1 to 3 feet. 


$$

fzus63 kmkx 190807
glflm 
expires:202607191515;;222579

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
307 am cdt sun jul 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...

wildfire smoke has returned to lake michigan and may become dense
once at times, reducing visibilites to 1 nautical miles.a marine 
dense smoke advisory is in effect across lake michigan into early 
monday morning.

light north to northeast will continue until a high pressure 
around 30.1 inches moves over the northern great lakes. as the 
high move through today, light and variable winds are expected. gusty
south to southwest winds may then develop monday into monday 
night, with gusty west to northwest winds possible into the middle
of next week. a few southerly gales are possible monday afternoon
and evening, with a few northwest gales possible tuesday night 
into wednesday.


lmz261-362-364-366-563-565-567-868-191515-
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-
307 am cdt sun jul 19 2026

sheboygan wi to pentwater mi north...

...dense smoke advisory in effect until 7 am cdt monday...

.today...northeast winds 5 to 10 kt becoming east late this
morning, then veering to south 10 to 20 kt early this afternoon
becoming southwest late. areas of smoke this morning, then patchy
smoke this afternoon. waves 1 to 3 ft subsiding to 1 to 2 ft. 
.tonight...southwest winds 10 to 20 kt increasing to 15 to 25 kt.
patchy smoke. chance of showers overnight. waves 2 to 4 ft. 
.monday...southwest winds 15 to 25 kt becoming south gales to
35 kt. areas of smoke in the morning, then patchy smoke in the
afternoon. chance of showers in the afternoon. waves 2 to 4 ft
building to 6 to 9 ft occasionally to 12 ft. 
.monday night...south gales to 35 kt becoming southwest to 30 kt.
patchy smoke in the evening. showers with a chance of
thunderstorms in the evening, then chance of showers and
thunderstorms overnight. waves 6 to 9 ft occasionally to 12 ft. 
.tuesday...northwest winds to 30 kt increasing to gales to 35 kt.
chance of thunderstorms in the morning. waves 4 to 7 ft
occasionally to 9 ft. 
.tuesday night...north gales to 35 kt. waves 7 to 10 ft
occasionally to 13 ft. 
.wednesday...north winds to 30 kt. waves 6 to 9 ft occasionally
to 12 ft. 
.thursday...west winds 10 to 20 kt becoming southwest 15 to
25 kt. waves 1 to 3 ft.  

$$

fzus63 kmkx 190807
glflm 
expires:202607191515;;222580

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
307 am cdt sun jul 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...

wildfire smoke has returned to lake michigan and may become dense
once at times, reducing visibilites to 1 nautical miles.a marine 
dense smoke advisory is in effect across lake michigan into early 
monday morning.

light north to northeast will continue until a high pressure 
around 30.1 inches moves over the northern great lakes. as the 
high move through today, light and variable winds are expected. gusty
south to southwest winds may then develop monday into monday 
night, with gusty west to northwest winds possible into the middle
of next week. a few southerly gales are possible monday afternoon
and evening, with a few northwest gales possible tuesday night 
into wednesday.


lmz080-669-671-673-675-777-779-870-872-874-876-878-191515-
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-
307 am cdt sun jul 19 2026

sheboygan wi to pentwater mi south...

...dense smoke advisory in effect until 7 am cdt monday...

.today...northeast winds 5 to 10 kt increasing to 10 to 20 kt
early this afternoon, then becoming north late. areas of smoke
this morning, then patchy smoke this afternoon. waves 3 to 5 ft
subsiding to 1 to 2 ft. 
.tonight...north winds 10 to 20 kt veering to southeast 5 to
10 kt late in the evening, then becoming south after midnight
becoming south 10 to 15 kt late. patchy smoke. waves 1 to 2 ft. 
.monday...southwest winds 10 to 20 kt becoming south to 30 kt.
areas of smoke in the morning, then patchy smoke in the
afternoon. waves 1 to 3 ft building to 5 to 8 ft occasionally to
10 ft. 
.monday night...southwest winds to 30 kt. patchy smoke in the
evening. showers with a chance of thunderstorms in the evening,
then showers likely with a chance of thunderstorms overnight.
waves 5 to 8 ft occasionally to 10 ft. 
.tuesday...west winds to 30 kt becoming northwest. waves 5 to
8 ft occasionally to 10 ft. 
.tuesday night...north gales to 35 kt diminishing to 30 kt. waves
8 to 11 ft occasionally to 14 ft. 
.wednesday...north winds to 30 kt. waves 8 to 11 ft occasionally
to 14 ft subsiding to 7 to 10 ft occasionally to 13 ft. 
.thursday...west winds 10 to 15 kt becoming south 10 to 20 kt.
waves 1 to 3 ft.  

$$

fzus63 kmqt 191401
glfls 
expires:202607192000;;234199

open lake forecast for lake superior
national weather service marquette mi
1000 am edt sun jul 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... 

30.0 high pressure moves east as a 29.5 inch low moves into manitoba 
tonight, bringing troughing of 29.7 inches to the upper midwest. the 
low will track into ontario and deepen to 29.4 inches monday night 
with a 29.5 inch trough over lake superior. the low will then push 
east into quebec and retrograde to northern quebec for midweek. 
meanwhile a 30.1 inch ridge descends southeast over the midwest 
tuesday through wednesday night, moving into the ohio river valley 
on thursday with weak ridging of 29.9 inches extending back 
northwest over lake superior.




lsz263-192000-
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 am edt sun jul 19 2026

...dense smoke advisory in effect until 8 am edt monday...

.rest of today...southwest winds 5 to 15 knots. areas of smoke.
waves calm to 2 feet. 
.tonight...south winds 5 to 15 knots increasing to 10 to 20 knots
after midnight, then becoming southwest 15 to 25 knots late.
patchy smoke through midnight. a chance of showers and
thunderstorms. waves building to 1 to 3 feet. 
.monday...southwest winds 15 to 25 knots. a chance of showers and
thunderstorms. waves building to 3 to 6 feet occasionally to
8 feet. 
.monday night...west winds 15 to 25 knots. a slight chance of
thunderstorms through midnight. a chance of showers. waves
subsiding to 2 to 4 feet. 
.tuesday...northwest winds 15 to 25 knots veering north by mid
afternoon. waves 2 to 4 feet. 
.tuesday night...northwest winds 10 to 20 knots diminishing to
5 to 15 knots after midnight. waves subsiding to calm to 2 feet. 
.wednesday...southwest winds 10 to 20 knots diminishing to 5 to
15 knots. waves calm to 2 feet. 
.thursday...southwest 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 191401
glfls 
expires:202607192000;;234200

open lake forecast for lake superior
national weather service marquette mi
1000 am edt sun jul 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... 

30.0 high pressure moves east as a 29.5 inch low moves into manitoba 
tonight, bringing troughing of 29.7 inches to the upper midwest. the 
low will track into ontario and deepen to 29.4 inches monday night 
with a 29.5 inch trough over lake superior. the low will then push 
east into quebec and retrograde to northern quebec for midweek. 
meanwhile a 30.1 inch ridge descends southeast over the midwest 
tuesday through wednesday night, moving into the ohio river valley 
on thursday with weak ridging of 29.9 inches extending back 
northwest over lake superior.




lsz264-192000-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
1000 am edt sun jul 19 2026

...dense smoke advisory in effect until 8 am edt monday...

.rest of today...south winds 5 to 15 knots. areas of smoke. waves
calm to 2 feet. 
.tonight...south winds 5 to 15 knots veering southwest after
midnight, then becoming south 10 to 20 knots late. patchy smoke.
a chance of showers through midnight. a chance of thunderstorms.
showers likely after midnight. waves building to 1 to 3 feet. 
.monday...southwest winds 15 to 25 knots. a chance of showers and
thunderstorms. waves building to 3 to 5 feet occasionally to
7 feet. 
.monday night...southwest winds 15 to 25 knots veering west after
midnight. showers likely and a slight chance of thunderstorms
through midnight, then a slight chance of showers after midnight.
waves subsiding to 2 to 4 feet. 
.tuesday...northwest winds 20 to 30 knots. a slight chance of
showers. waves building to 3 to 6 feet occasionally to 8 feet. 
.tuesday night...northwest winds 15 to 25 knots diminishing to
10 to 20 knots after midnight. waves subsiding to 1 to 3 feet. 
.wednesday...west winds 5 to 15 knots backing southwest. waves
subsiding to calm to 2 feet. 
.thursday...southwest winds 5 to 15 knots. waves calm to 2 feet. 

$$

fzus63 kmqt 191401
glfls 
expires:202607192000;;234201

open lake forecast for lake superior
national weather service marquette mi
1000 am edt sun jul 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... 

30.0 high pressure moves east as a 29.5 inch low moves into manitoba 
tonight, bringing troughing of 29.7 inches to the upper midwest. the 
low will track into ontario and deepen to 29.4 inches monday night 
with a 29.5 inch trough over lake superior. the low will then push 
east into quebec and retrograde to northern quebec for midweek. 
meanwhile a 30.1 inch ridge descends southeast over the midwest 
tuesday through wednesday night, moving into the ohio river valley 
on thursday with weak ridging of 29.9 inches extending back 
northwest over lake superior.




lsz265-192000-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
1000 am edt sun jul 19 2026

...dense smoke advisory in effect until 8 am edt monday...

.rest of today...south winds 10 to 20 knots backing southeast
late. areas of smoke. waves calm to 2 feet. 
.tonight...south winds 10 to 20 knots becoming southwest 15 to
25 knots after midnight, then backing south late. areas of smoke.
a chance of showers and thunderstorms. waves building to 1 to
3 feet. 
.monday...south winds 15 to 25 knots veering southwest in the
afternoon. a chance of showers and thunderstorms. waves 1 to
3 feet. 
.monday night...southwest winds 15 to 25 knots becoming west
20 to 30 knots after midnight. showers likely through midnight. a
chance of thunderstorms. a slight chance of showers after
midnight. waves building to 3 to 5 feet occasionally to 7 feet. 
.tuesday...northwest gales to 40 knots. a slight chance of
showers. waves building to 6 to 10 feet occasionally to 13 feet. 
.tuesday night...northwest gales to 35 knots. waves subsiding to
3 to 6 feet occasionally to 8 feet. 
.wednesday...northwest winds 20 to 30 knots becoming southwest
10 to 20 knots. waves subsiding to calm to 2 feet. 
.thursday...west winds 10 to 20 knots backing southwest. waves
calm to 2 feet. 

$$

fzus63 kmqt 191401
glfls 
expires:202607192000;;234202

open lake forecast for lake superior
national weather service marquette mi
1000 am edt sun jul 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... 

30.0 high pressure moves east as a 29.5 inch low moves into manitoba 
tonight, bringing troughing of 29.7 inches to the upper midwest. the 
low will track into ontario and deepen to 29.4 inches monday night 
with a 29.5 inch trough over lake superior. the low will then push 
east into quebec and retrograde to northern quebec for midweek. 
meanwhile a 30.1 inch ridge descends southeast over the midwest 
tuesday through wednesday night, moving into the ohio river valley 
on thursday with weak ridging of 29.9 inches extending back 
northwest over lake superior.




lsz266-192000-
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 am edt sun jul 19 2026

...dense smoke advisory in effect until 8 am edt monday...

.rest of today...south winds 5 to 15 knots. areas of smoke. waves
calm to 2 feet. 
.tonight...south winds 10 to 20 knots increasing to 15 to
25 knots after midnight, then veering southwest late. areas of
smoke. a chance of showers and thunderstorms. waves building to
2 to 4 feet. 
.monday...south winds 15 to 25 knots. a chance of showers and
thunderstorms. waves 2 to 4 feet. 
.monday night...southwest winds 15 to 25 knots becoming west
20 to 30 knots after midnight. showers through midnight. a slight
chance of thunderstorms. a chance of showers after midnight.
waves building to 3 to 5 feet occasionally to 7 feet. 
.tuesday...northwest gales to 40 knots. a slight chance of
showers. waves building to 7 to 10 feet occasionally to 13 feet. 
.tuesday night...northwest gales to 35 knots. waves subsiding to
5 to 8 feet occasionally to 10 feet. 
.wednesday...northwest gales to 35 knots becoming west 10 to
20 knots. waves subsiding to calm to 2 feet. 
.thursday...west winds 5 to 15 knots backing south. waves calm to
2 feet. 

$$

fzus63 kmqt 191401
glfls 
expires:202607192000;;234203

open lake forecast for lake superior
national weather service marquette mi
1000 am edt sun jul 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... 

30.0 high pressure moves east as a 29.5 inch low moves into manitoba 
tonight, bringing troughing of 29.7 inches to the upper midwest. the 
low will track into ontario and deepen to 29.4 inches monday night 
with a 29.5 inch trough over lake superior. the low will then push 
east into quebec and retrograde to northern quebec for midweek. 
meanwhile a 30.1 inch ridge descends southeast over the midwest 
tuesday through wednesday night, moving into the ohio river valley 
on thursday with weak ridging of 29.9 inches extending back 
northwest over lake superior.




lsz267-192000-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
1000 am edt sun jul 19 2026

...dense smoke advisory in effect until 8 am edt monday...

.rest of today...south winds 5 to 15 knots backing southeast
late. patchy smoke by late morning. waves calm to 2 feet. 
.tonight...south winds 5 to 15 knots increasing to 10 to 20 knots
after midnight, then becoming southwest 15 to 25 knots late.
areas of smoke. a slight chance of showers through midnight.
showers likely and a chance of thunderstorms after midnight.
waves building to 2 to 4 feet. 
.monday...south winds 15 to 25 knots. showers and a chance of
thunderstorms. waves 2 to 4 feet. 
.monday night...south winds 15 to 25 knots becoming west 10 to
20 knots after midnight. showers through midnight. a chance of
thunderstorms. a chance of showers after midnight. waves
subsiding to 1 to 3 feet, then building to 2 to 4 feet. 
.tuesday...northwest winds 20 to 30 knots increasing to gales to
35 knots by mid afternoon. a chance of showers. waves building to
7 to 10 feet occasionally to 13 feet. 
.tuesday night...northwest gales to 35 knots. waves subsiding to
5 to 8 feet occasionally to 10 feet. 
.wednesday...northwest winds 20 to 30 knots becoming west 10 to
20 knots. waves subsiding to calm to 2 feet. 
.thursday...southwest winds 5 to 15 knots backing south. waves
calm to 2 feet. 

$$

fzus63 kmqt 190801
glfls 
expires:202607192000;;222083

open lake forecast for lake superior
national weather service marquette mi
400 am edt sun jul 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... 

30.0 high pressure moves east as a 29.5 inch low moves into manitoba 
tonight, bringing troughing of 29.7 inches to the upper midwest. the 
low will track into ontario and deepen to 29.4 inches monday night 
with a 29.5 inch trough over lake superior. the low will then push 
east into quebec and retrograde to northern quebec for midweek. 
meanwhile a 30.1 inch ridge descends southeast over the midwest 
tuesday through wednesday night, moving into the ohio river valley 
on thursday with weak ridging of 29.9 inches extending back 
northwest over lake superior.




lsz162-192000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
400 am edt sun jul 19 2026 /300 am cdt sun jul 19 2026/

.early this morning...south winds 5 to 15 knots. patchy smoke.
waves calm to 2 feet. 
.today...southwest winds 5 to 15 knots. patchy smoke. a slight
chance of showers. a slight chance of thunderstorms by mid
afternoon. waves calm to 2 feet. 
.tonight...southwest winds 5 to 15 knots becoming south 10 to
20 knots after midnight, then veering southwest late. a chance of
showers and a slight chance of thunderstorms. waves building to
1 to 3 feet. 
.monday...southwest winds 15 to 25 knots increasing to 20 to
30 knots in the afternoon. a chance of showers and thunderstorms.
waves building to 3 to 5 feet occasionally to 7 feet, then
subsiding to 2 to 4 feet. 
.monday night...west winds 15 to 25 knots. a slight chance of
showers and thunderstorms through midnight. waves subsiding to
calm to 2 feet, then building to 1 to 3 feet. 
.tuesday...northwest winds 15 to 25 knots veering north by mid
afternoon. waves subsiding to calm to 2 feet. 
.tuesday night...northwest winds 10 to 20 knots diminishing to
5 to 15 knots after midnight. waves calm to 2 feet. 
.wednesday...southwest winds 5 to 15 knots veering west. waves
calm to 2 feet. 
.thursday...southwest winds 5 to 15 knots veering west. waves
calm to 2 feet. 

$$