fzus61 kbuf 072039
glflo 
expires:202608080315;;789543

open lake forecast for lake ontario
national weather service buffalo ny
439 pm edt fri aug 7 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 high pressure ridge averaging 30.0 inches exits 
eastward before a cold front sweeps eastward across lake ontario 
saturday night. behind the front, a ridge averaging 30.1 inches
builds from the western great lakes through sunday. this ridge 
begins to exit eastward sunday night and another cold front should
sweep eastward across lake ontario monday night. behind the 
front, a trough averaging 29.8 inches should linger over the 
eastern great lakes through this wednesday.


loz062-080315-
lake ontario open waters from the niagara river to hamlin beach-
439 pm edt fri aug 7 2026

.tonight...east winds 10 knots or less becoming southwest. a
chance of showers and thunderstorms early. waves 1 foot or less. 
.saturday...southwest winds 5 to 15 knots. a chance of showers
late in the morning. waves 2 feet or less. 
.saturday night...southwest winds 10 to 15 knots becoming west. a
chance of showers and thunderstorms in the evening. waves 1 to
2 feet. 
.sunday...west winds 5 to 10 knots becoming southwest. waves
2 feet or less. 
.sunday night...southwest winds 5 to 10 knots becoming south.
waves 2 feet or less. 
.monday...southwest winds 5 to 15 knots becoming west. showers
likely with a chance of thunderstorms. waves 1 to 2 feet. 
.tuesday...west winds 10 knots or less becoming northwest.
showers likely during the day, then a chance of showers tuesday
night. waves 1 foot or less. 
.wednesday...northwest winds 10 knots or less becoming west.
waves 1 foot or less. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kbuf 072039
glflo 
expires:202608080315;;789544

open lake forecast for lake ontario
national weather service buffalo ny
439 pm edt fri aug 7 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 high pressure ridge averaging 30.0 inches exits 
eastward before a cold front sweeps eastward across lake ontario 
saturday night. behind the front, a ridge averaging 30.1 inches
builds from the western great lakes through sunday. this ridge 
begins to exit eastward sunday night and another cold front should
sweep eastward across lake ontario monday night. behind the 
front, a trough averaging 29.8 inches should linger over the 
eastern great lakes through this wednesday.


loz063>065-080315-
lake ontario open waters from hamlin beach to the saint lawrence
river-
439 pm edt fri aug 7 2026

.tonight...east winds less than 10 knots becoming south. a chance
of showers and thunderstorms this evening, then a chance of
showers after midnight. waves 1 foot or less. 
.saturday...southwest winds 5 to 10 knots. a chance of showers
late in the morning. a chance of showers and thunderstorms in the
afternoon. waves 2 feet or less. 
.saturday night...southwest winds 5 to 15 knots becoming west. a
chance of showers. waves 2 feet or less building to 2 to 3 feet. 
.sunday...west winds 10 to 15 knots. waves 1 to 3 feet. 
.sunday night...southwest winds 5 to 15 knots becoming south.
waves 2 feet or less. 
.monday...south winds 5 to 10 knots becoming west. a chance of
showers and thunderstorms during the day, then showers likely
with a chance of thunderstorms monday night. waves 1 to 2 feet. 
.tuesday...west winds 5 to 10 knots becoming northwest. a chance
of showers. waves 2 feet or less. 
.wednesday...northwest winds 5 to 10 knots becoming west. a
chance of showers wednesday night. waves 1 foot or less. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 071945
glfle 
expires:202608080215;;787162

open lake forecast for lake erie
national weather service cleveland oh
345 pm edt fri aug 7 2026

for waters beyond five nautical miles of shore on lake erie

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

.synopsis...
low pressure 29.60 inches gliding east across ontario into quebec
will drag a cold front east across lake erie on saturday into 
saturday night. a ridge averaging 30.10 inches will briefly build 
over the region on sunday before low pressure 30.00 inches lifts 
from the central plains into the lower great lakes region on 
monday. a stationary boundary will linger in the vicinity of lake 
erie through mid-week.


lez165>167-080215-
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-
345 pm edt fri aug 7 2026

.tonight...south winds 10 knots or less becoming southwest 10 to
15 knots. a chance of showers and thunderstorms from late evening
on. waves 1 to 3 feet. 
.saturday...southwest winds 10 to 15 knots. a chance of showers
and thunderstorms early. a slight chance of showers and
thunderstorms late. waves 1 to 3 feet. 
.saturday night...west winds 10 to 15 knots becoming north. waves
1 to 3 feet. 
.sunday...north winds 10 knots or less becoming southwest. waves
2 feet or less. 
.sunday night...south winds 10 knots or less becoming southwest
and increasing to 15 to 20 knots overnight. showers likely
overnight. waves 2 feet or less. 
.monday...southwest winds 15 to 20 knots diminishing to 10 to
15 knots. a chance of showers and thunderstorms during the day,
then showers with a chance of thunderstorms monday night. waves
2 to 4 feet subsiding to 1 to 3 feet. 
.tuesday...southwest winds 5 to 15 knots becoming west. a chance
of showers and thunderstorms during the day, then showers likely
with a chance of thunderstorms tuesday night. waves 1 to 3 feet. 
.wednesday...northwest winds 5 to 10 knots becoming north. a
chance of showers during the day, then a chance of showers and
thunderstorms wednesday night. waves 1 foot or less. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 071945
glfle 
expires:202608080215;;787161

open lake forecast for lake erie
national weather service cleveland oh
345 pm edt fri aug 7 2026

for waters beyond five nautical miles of shore on lake erie

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

.synopsis...
low pressure 29.60 inches gliding east across ontario into quebec
will drag a cold front east across lake erie on saturday into 
saturday night. a ridge averaging 30.10 inches will briefly build 
over the region on sunday before low pressure 30.00 inches lifts 
from the central plains into the lower great lakes region on 
monday. a stationary boundary will linger in the vicinity of lake 
erie through mid-week.


lez162>164-080215-
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-
345 pm edt fri aug 7 2026

.tonight...south winds 5 to 15 knots becoming southwest. a slight
chance of showers and thunderstorms early, then a chance of
showers and thunderstorms. a chance of showers with a slight
chance of thunderstorms late. waves 2 feet or less. 
.saturday...southwest winds 10 to 15 knots. a slight chance of
showers and thunderstorms early. a slight chance of showers and
thunderstorms in the afternoon. waves 1 to 2 feet. 
.saturday night...west winds 5 to 10 knots becoming northwest.
waves 1 to 2 feet. 
.sunday...north winds 10 knots or less becoming south. waves
1 foot or less. 
.sunday night...south winds 5 to 15 knots becoming southwest. a
chance of showers in the evening, then showers likely overnight.
waves 2 feet or less. 
.monday...southwest winds 10 to 15 knots. showers with a chance
of thunderstorms. waves 1 to 2 feet. 
.tuesday...west winds 5 to 15 knots. showers likely with a chance
of thunderstorms. waves 2 feet or less. 
.wednesday...northwest winds 5 to 10 knots becoming north. a
chance of showers and thunderstorms. waves 1 foot or less. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 071945
glfle 
expires:202608080215;;787163

open lake forecast for lake erie
national weather service cleveland oh
345 pm edt fri aug 7 2026

for waters beyond five nautical miles of shore on lake erie

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

.synopsis...
low pressure 29.60 inches gliding east across ontario into quebec
will drag a cold front east across lake erie on saturday into 
saturday night. a ridge averaging 30.10 inches will briefly build 
over the region on sunday before low pressure 30.00 inches lifts 
from the central plains into the lower great lakes region on 
monday. a stationary boundary will linger in the vicinity of lake 
erie through mid-week.


lez061-168-169-080215-
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-
345 pm edt fri aug 7 2026

.tonight...south winds 10 knots or less becoming southwest 10 to
15 knots. showers likely with a chance of thunderstorms late.
waves 2 feet or less. 
.saturday...southwest winds 10 to 15 knots. a chance of showers
and thunderstorms in the morning, then a slight chance of showers
and thunderstorms early in the afternoon. waves 1 to 3 feet. 
.saturday night...southwest winds 5 to 15 knots becoming north. a
chance of showers overnight. waves 1 to 3 feet. 
.sunday...north winds 10 knots or less becoming west. waves
2 feet or less. 
.sunday night...south winds 10 knots or less becoming southwest
10 to 15 knots. a chance of showers overnight. waves 2 feet or
less. 
.monday...southwest winds 15 to 20 knots diminishing to 10 to
15 knots. a chance of showers and thunderstorms during the day,
then showers with a chance of thunderstorms monday night. waves
2 to 4 feet. 
.tuesday...west winds 5 to 15 knots becoming northwest. showers
likely with a chance of thunderstorms during the day, then a
chance of showers tuesday night. waves 1 to 3 feet. 
.wednesday...northwest winds 10 knots or less becoming north. a
chance of showers. waves 1 foot or less. 

winds and waves higher in and near thunderstorms.

$$

fzus63 kdtx 071938
glflh 
expires:202608080345;;786883

open lake forecast for lake huron
national weather service detroit/pontiac mi
338 pm edt fri aug 7 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...light southerly flow will continue through the
overnight out ahead of a cold front which passes through on
saturday. winds shift to the northwest and briefly top out at or
above 20 knots over northern lake huron saturday afternoon into
the evening. high pressure, 30.00 inches, slides east through the
ohio valley saturday night, allowing winds to become southerly
once again for sunday.


lhz362-363-080345-
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-
338 pm edt fri aug 7 2026

.tonight...southeast winds 10 to 15 knots becoming south 5 to
10 knots early in the morning. waves 1 to 3 feet. 
.saturday...southwest winds 10 to 15 knots decreasing to 5 to
10 knots in the late morning and early afternoon...then veering
to the southwest 5 to 10 knots late in the afternoon. a chance of
showers in the morning. waves 1 to 3 feet. 
.saturday night...north winds 10 to 15 knots decreasing to 5 to
10 knots by midnight...then becoming light and variable after
midnight. waves 2 to 4 feet subsiding to 1 to 3 feet in the late
evening and overnight. 
.sunday...southwest winds 5 to 10 knots becoming south 10 to
15 knots early in the afternoon. waves 1 to 3 feet. 
.sunday night...south winds 10 to 15 knots decreasing to 5 to
10 knots in the late evening and overnight. a chance of showers.
waves 1 to 3 feet. 
.monday...light and variable winds becoming north 5 to 10 knots
late in the evening. a chance of showers. waves 2 feet or less. 
.tuesday...northwest winds 5 to 10 knots early in the morning
becoming light and variable. a chance of showers early in the
evening. waves 2 feet or less. 
.wednesday...west winds 5 to 10 knots early in the morning
becoming light and variable...then becoming east 5 to 10 knots
early in the evening backing to the west. waves 2 feet or less. 


$$

fzus63 kdtx 071938
glflh 
expires:202608080345;;786882

open lake forecast for lake huron
national weather service detroit/pontiac mi
338 pm edt fri aug 7 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...light southerly flow will continue through the
overnight out ahead of a cold front which passes through on
saturday. winds shift to the northwest and briefly top out at or
above 20 knots over northern lake huron saturday afternoon into
the evening. high pressure, 30.00 inches, slides east through the
ohio valley saturday night, allowing winds to become southerly
once again for sunday.


lhz361-080345-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
338 pm edt fri aug 7 2026

.tonight...southeast winds 5 to 10 knots veering to the south
after midnight. a chance of showers after midnight. waves 1 to
3 feet. 
.saturday...southwest winds 5 to 10 knots becoming west 10 to
15 knots in the late morning and afternoon. waves 1 to 3 feet. 
.saturday night...west winds 10 to 15 knots early in the evening
becoming light and variable...then becoming southwest 5 to
10 knots after midnight. waves 1 to 3 feet. 
.sunday...south winds 5 to 10 knots. waves 2 feet or less. 
.sunday night...light and variable winds. a chance of showers.
waves 2 feet or less. 
.monday...light and variable winds becoming northwest 5 to
10 knots. waves 2 feet or less. 
.tuesday...northwest winds 5 to 10 knots early in the morning
becoming light and variable...then becoming west 5 to 10 knots
early in the evening veering to the northwest. waves 2 feet or
less. 
.wednesday...west winds 5 to 10 knots becoming northwest 10 to
15 knots by midnight. waves 2 feet or less. 


$$

fzus63 kdtx 071938
glflh 
expires:202608080345;;786884

open lake forecast for lake huron
national weather service detroit/pontiac mi
338 pm edt fri aug 7 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...light southerly flow will continue through the
overnight out ahead of a cold front which passes through on
saturday. winds shift to the northwest and briefly top out at or
above 20 knots over northern lake huron saturday afternoon into
the evening. high pressure, 30.00 inches, slides east through the
ohio valley saturday night, allowing winds to become southerly
once again for sunday.


lhz462>464-080345-
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-
338 pm edt fri aug 7 2026

.tonight...southeast winds 5 to 10 knots veering to the south
early in the morning. waves 2 feet or less. 
.saturday...southwest winds 5 to 10 knots. a chance of showers.
waves 1 to 3 feet. 
.saturday night...north winds 5 to 10 knots  becoming light and
variable. waves 2 feet or less. 
.sunday...southwest winds 5 to 10 knots backing to the south
early in the afternoon. waves 2 feet or less. 
.sunday night...south winds 5 to 10 knots increasing to 10 to
15 knots by midnight...then decreasing to 5 to 10 knots after
midnight. a chance of showers. waves 1 to 3 feet. 
.monday...southwest winds 5 to 10 knots backing to the southeast
late in the evening. a chance of showers. a chance of
thunderstorms. rain showers likely late in the afternoon. waves
2 feet or less. 
.tuesday...west winds 5 to 10 knots early in the morning becoming
light and variable. a chance of showers until early evening.
waves 2 feet or less. 
.wednesday...north winds 5 to 10 knots backing to the northwest
early in the evening...then veering to the northwest 5 to
10 knots by midnight. a chance of showers by midnight. waves
2 feet or less. 


$$

fzus63 kdtx 071938
glfsc 
expires:202608080345;;786889

lake st clair forecast
national weather service detroit/pontiac mi
338 pm edt fri aug 7 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...light southerly flow will continue through the
overnight out ahead of a cold front which passes through on
saturday. winds shift to the northwest and briefly top out at or
above 20 knots over northern lake huron saturday afternoon into
the evening. high pressure, 30.00 inches, slides east through the
ohio valley saturday night, allowing winds to become southerly
once again for sunday.


lcz460-080345-
lake st clair-
338 pm edt fri aug 7 2026

.tonight...south winds 10 to 15 knots becoming southwest 5 to 10
knots after midnight. mostly clear. a chance of light showers early
in the morning. waves 2 feet or less.
.saturday...southwest winds 10 to 15 knots. mostly sunny. a chance
of showers early in the afternoon. a chance of thunderstorms in the
afternoon. waves 2 feet or less.
.saturday night...northwest winds 5 to 10 knots veering to the north
after midnight. mostly clear. waves 2 feet or less.
.sunday...north winds 5 to 10 knots backing to the south in the late
morning and early afternoon...then increasing to 10 to 15 knots
early in the afternoon. partly sunny early in the morning then
clearing. waves 2 feet or less.
.sunday night...south winds 10 to 15 knots. partly cloudy becoming
mostly cloudy. a chance of light showers ...then showers likely
after midnight. waves 2 feet or less.
.monday...southwest winds 10 to 15 knots becoming west 5 to 10 knots
in the evening. partly sunny. showers likely. a chance of
thunderstorms in the afternoon and evening. showers in the evening.
waves 2 feet or less.
.tuesday...northeast winds 10 to 15 knots. mostly cloudy. showers
and a chance of thunderstorms. waves 2 feet or less.
.wednesday...northeast winds 5 to 10 knots. partly cloudy. a chance
of showers and thunderstorms. waves 2 feet or less.

$$

fzus63 kmkx 072103
glflm 
expires:202608080300;;790454

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
403 pm cdt fri aug 7 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...

low pressure of 29.8 inches over lake superior along a front will
swing through tonight across the lake. scattered showers and 
storms are possible tonight as this cold front crosses lake 
michigan. west to northwest winds behind the front early saturday 
will quickly return to southerly by saturday evening ahead of the 
next approaching low pressure system. an unsettled weather pattern
will set up over the upper great lakes next week where weak waves
of low pressure will cross the region and produce rounds of 
thunderstorms at times.


lmz080-669-671-673-675-777-779-870-872-874-876-878-080300-
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-
403 pm cdt fri aug 7 2026

sheboygan wi to pentwater mi south...

.tonight...south winds 15 to 25 kt becoming west 10 to 20 kt.
waves 2 to 4 ft subsiding to 1 to 3 ft. 
.saturday...west winds 10 to 20 kt diminishing to 10 to 15 kt.
waves 1 to 3 ft. 
.saturday night...south winds 5 to 10 kt increasing to 10 to
15 kt. waves 1 to 2 ft. 
.sunday...south winds 10 to 20 kt. chance of showers. waves 2 to
4 ft. 
.sunday night...south winds 10 to 20 kt becoming southwest 10 to
15 kt. showers likely with a chance of thunderstorms. waves 2 to
4 ft subsiding to 1 to 3 ft. 
.monday...southwest winds 10 to 20 kt becoming south. chance of
showers and thunderstorms. waves 1 to 3 ft. 
.monday night...southeast winds 10 to 20 kt backing to north
10 to 15 kt. showers likely with a chance of thunderstorms. waves
1 to 3 ft. 
.tuesday...northeast winds 10 to 15 kt becoming north. chance of
showers. waves 1 to 3 ft. 
.wednesday...northeast winds 5 to 10 kt becoming north 10 to
20 kt. waves 1 ft or less.  

$$

fzus63 kmkx 072103
glflm 
expires:202608080300;;790453

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
403 pm cdt fri aug 7 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...

low pressure of 29.8 inches over lake superior along a front will
swing through tonight across the lake. scattered showers and 
storms are possible tonight as this cold front crosses lake 
michigan. west to northwest winds behind the front early saturday 
will quickly return to southerly by saturday evening ahead of the 
next approaching low pressure system. an unsettled weather pattern
will set up over the upper great lakes next week where weak waves
of low pressure will cross the region and produce rounds of 
thunderstorms at times.


lmz261-362-364-366-563-565-567-868-080300-
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-
403 pm cdt fri aug 7 2026

sheboygan wi to pentwater mi north...

.tonight...south winds 15 to 25 kt becoming west 10 to 20 kt.
chance of showers and slight chance of thunderstorms. waves 3 to
5 ft subsiding to 2 to 4 ft. 
.saturday...northwest winds 10 to 20 kt backing to southwest.
patchy dense fog in the morning. waves 1 to 3 ft. 
.saturday night...southwest winds 10 to 15 kt increasing to 10 to
20 kt. waves 1 to 2 ft. 
.sunday...southwest winds 10 to 20 kt becoming south 15 to 25 kt.
chance of showers in the afternoon. waves 2 to 4 ft. 
.sunday night...southwest winds 10 to 20 kt veering to northwest
5 to 10 kt overnight. chance of showers. waves 2 to 4 ft. 
.monday...north winds 10 to 20 kt veering to south. waves 1 to
3 ft. 
.monday night...south winds 10 to 15 kt backing to northeast.
waves 1 to 2 ft. 
.tuesday...northeast winds 10 to 15 kt becoming north. chance of
showers. waves 1 to 2 ft. 
.wednesday...northwest winds 10 to 15 kt becoming west 10 to
20 kt. waves 1 to 2 ft.  

$$

fzus63 kmqt 072001
glfls 
expires:202608080800;;787639

open lake forecast for lake superior
national weather service marquette mi
401 pm edt fri aug 7 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 passing cold front brings 29.8 inch troughing across the lake 
through tonight before 29.9 inch ridging returns saturday. weak 29.8 
inch troughing moves over lake superior saturday night, then benign 
ridging/troughing of around 29.9 inches maintains over the lake 
through sunday night. weak ridging of 29.9 to 30.0 inches returns 
for monday through wednesday.




lsz266-080800-
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-
401 pm edt fri aug 7 2026

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

$$

fzus63 kmqt 072001
glfls 
expires:202608080800;;787640

open lake forecast for lake superior
national weather service marquette mi
401 pm edt fri aug 7 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 passing cold front brings 29.8 inch troughing across the lake 
through tonight before 29.9 inch ridging returns saturday. weak 29.8 
inch troughing moves over lake superior saturday night, then benign 
ridging/troughing of around 29.9 inches maintains over the lake 
through sunday night. weak ridging of 29.9 to 30.0 inches returns 
for monday through wednesday.




lsz267-080800-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
401 pm edt fri aug 7 2026

.late this afternoon...south winds 10 to 20 knots. a chance of
showers and thunderstorms. waves calm to 2 feet. 
.tonight...south winds 10 to 20 knots veering west late. showers
likely through midnight. a chance of thunderstorms. a chance of
showers after midnight. waves building to 1 to 3 feet, then
subsiding to calm to 2 feet. 
.saturday...northwest winds 10 to 20 knots backing west in the
afternoon, then diminishing to 5 to 15 knots late. waves building
to 1 to 3 feet, then subsiding to calm to 2 feet. 
.saturday night...southwest winds 5 to 15 knots backing south
after midnight, then becoming southwest 10 to 20 knots late. a
slight chance of showers after midnight. waves calm to 2 feet. 
.sunday...southwest winds 10 to 20 knots becoming east 5 to
15 knots by mid afternoon. showers likely and a slight chance of
thunderstorms through early afternoon, then a chance of showers
by mid afternoon. waves calm to 2 feet. 
.sunday night...northeast winds 5 to 15 knots backing north after
midnight. a chance of showers through midnight. waves calm to
2 feet. 
.monday...northwest winds 5 to 15 knots. waves calm to 2 feet. 
.monday night...northwest winds 5 to 15 knots backing west after
midnight. waves calm to 2 feet. 
.tuesday...northwest winds 5 to 15 knots backing west. waves calm
to 2 feet. 
.wednesday...west winds 5 to 15 knots becoming northwest 10 to
20 knots. waves calm to 2 feet. 

$$

fzus63 kmqt 072001
glfls 
expires:202608080800;;787637

open lake forecast for lake superior
national weather service marquette mi
401 pm edt fri aug 7 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 passing cold front brings 29.8 inch troughing across the lake 
through tonight before 29.9 inch ridging returns saturday. weak 29.8 
inch troughing moves over lake superior saturday night, then benign 
ridging/troughing of around 29.9 inches maintains over the lake 
through sunday night. weak ridging of 29.9 to 30.0 inches returns 
for monday through wednesday.




lsz264-080800-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
401 pm edt fri aug 7 2026

.late this afternoon...southwest winds 5 to 15 knots. showers
likely and a chance of thunderstorms. waves calm to 2 feet. 
.tonight...southwest winds 5 to 15 knots veering northwest late.
a chance of showers and a slight chance of thunderstorms through
midnight. waves calm to 2 feet. 
.saturday...west winds 5 to 15 knots increasing to 10 to 20 knots
in the afternoon, then backing southwest late. waves building to
1 to 3 feet. 
.saturday night...southwest winds 10 to 20 knots becoming west
5 to 15 knots after midnight. a chance of showers after midnight.
waves subsiding to calm to 2 feet. 
.sunday...west winds 5 to 15 knots backing south by mid
afternoon. a slight chance of showers through early afternoon.
waves calm to 2 feet. 
.sunday night...southwest winds 5 to 15 knots becoming west less
than 10 knots after midnight. waves calm to 2 feet. 
.monday...southwest winds less than 10 knots increasing to 5 to
15 knots by mid afternoon. waves calm to 2 feet. 
.monday night...southwest winds 5 to 15 knots becoming west less
than 10 knots after midnight. waves calm to 2 feet. 
.tuesday...west winds 5 to 15 knots. waves calm to 2 feet. 
.wednesday...west winds 5 to 15 knots veering northwest. waves
calm to 2 feet. 

$$

fzus63 kmqt 072001
glfls 
expires:202608080800;;787636

open lake forecast for lake superior
national weather service marquette mi
401 pm edt fri aug 7 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 passing cold front brings 29.8 inch troughing across the lake 
through tonight before 29.9 inch ridging returns saturday. weak 29.8 
inch troughing moves over lake superior saturday night, then benign 
ridging/troughing of around 29.9 inches maintains over the lake 
through sunday night. weak ridging of 29.9 to 30.0 inches returns 
for monday through wednesday.




lsz263-080800-
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-
401 pm edt fri aug 7 2026

.late this afternoon...southwest winds 5 to 15 knots. a chance of
showers and thunderstorms. waves calm to 2 feet. 
.tonight...west winds 5 to 15 knots veering northwest after
midnight, then backing west late. a slight chance of showers and
thunderstorms through midnight. waves calm to 2 feet. 
.saturday...west winds 5 to 15 knots becoming southwest 15 to
25 knots in the afternoon. waves building to 2 to 4 feet. 
.saturday night...southwest winds 10 to 20 knots becoming west
5 to 15 knots after midnight, then backing southwest late. a
chance of showers. a slight chance of thunderstorms after
midnight. waves subsiding to calm to 2 feet. 
.sunday...west winds 5 to 15 knots backing south by mid
afternoon. a slight chance of showers. waves calm to 2 feet. 
.sunday night...west winds 5 to 15 knots diminishing to less than
10 knots after midnight. waves calm to 2 feet. 
.monday...west winds 5 to 15 knots backing southwest by mid
afternoon. waves calm to 2 feet. 
.monday night...southwest winds 5 to 15 knots becoming west less
than 10 knots after midnight. waves calm to 2 feet. 
.tuesday...west winds 5 to 15 knots. waves calm to 2 feet. 
.wednesday...west winds 5 to 15 knots veering northwest. waves
calm to 2 feet. 

$$

fzus63 kmqt 072001
glfls 
expires:202608080800;;787635

open lake forecast for lake superior
national weather service marquette mi
401 pm edt fri aug 7 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 passing cold front brings 29.8 inch troughing across the lake 
through tonight before 29.9 inch ridging returns saturday. weak 29.8 
inch troughing moves over lake superior saturday night, then benign 
ridging/troughing of around 29.9 inches maintains over the lake 
through sunday night. weak ridging of 29.9 to 30.0 inches returns 
for monday through wednesday.




lsz162-080800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
401 pm edt fri aug 7 2026 /301 pm cdt fri aug 7 2026/

.late this afternoon...west winds 10 to 20 knots. a slight chance
of showers and thunderstorms. waves calm to 2 feet. 
.tonight...west winds 10 to 20 knots veering northwest after
midnight, then backing west late. waves calm to 2 feet. 
.saturday...west winds 10 to 20 knots backing southwest in the
afternoon. waves building to 1 to 3 feet. 
.saturday night...southwest winds 5 to 15 knots veering west
after midnight. a chance of showers and a slight chance of
thunderstorms. waves subsiding to calm to 2 feet. 
.sunday...west winds 5 to 15 knots backing south by mid
afternoon. a slight chance of showers through early afternoon.
waves calm to 2 feet. 
.sunday night...west winds 5 to 15 knots veering northwest after
midnight. waves calm to 2 feet. 
.monday...west winds 5 to 15 knots backing southwest by mid
afternoon. waves calm to 2 feet. 
.monday night...west winds 5 to 15 knots veering northwest after
midnight. waves calm to 2 feet. 
.tuesday...southwest winds 5 to 15 knots veering northwest. waves
calm to 2 feet. 
.wednesday...west winds 5 to 15 knots veering north. waves calm
to 2 feet. 

$$

fzus63 kmqt 072001
glfls 
expires:202608080800;;787638

open lake forecast for lake superior
national weather service marquette mi
401 pm edt fri aug 7 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 passing cold front brings 29.8 inch troughing across the lake 
through tonight before 29.9 inch ridging returns saturday. weak 29.8 
inch troughing moves over lake superior saturday night, then benign 
ridging/troughing of around 29.9 inches maintains over the lake 
through sunday night. weak ridging of 29.9 to 30.0 inches returns 
for monday through wednesday.




lsz265-080800-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
401 pm edt fri aug 7 2026

.late this afternoon...east winds 10 to 20 knots. showers and a
chance of thunderstorms. waves calm to 2 feet. 
.tonight...southwest winds 10 to 20 knots veering west after
midnight, then increasing to 15 to 25 knots late. showers likely
and a chance of thunderstorms through midnight. waves calm to
2 feet. 
.saturday...west winds 15 to 25 knots diminishing to 10 to
20 knots late. waves building to 1 to 3 feet, then subsiding to
calm to 2 feet. 
.saturday night...southwest winds 10 to 20 knots becoming west
15 to 25 knots late. a chance of showers and a slight chance of
thunderstorms after midnight. waves calm to 2 feet. 
.sunday...southwest winds 10 to 20 knots becoming east 5 to
15 knots by mid afternoon. a chance of showers. waves calm to
2 feet. 
.sunday night...south winds 5 to 15 knots veering west after
midnight. waves calm to 2 feet. 
.monday...southwest winds 5 to 15 knots backing northeast by mid
afternoon. waves calm to 2 feet. 
.monday night...southwest winds 5 to 15 knots veering west after
midnight. waves calm to 2 feet. 
.tuesday...west winds 5 to 15 knots. waves calm to 2 feet. 
.wednesday...northwest winds 10 to 20 knots. waves calm to
2 feet. 

$$