fzus61 kbuf 070802
glflo 
expires:202607071500;;555145

open lake forecast for lake ontario
national weather service buffalo ny
402 am edt tue jul 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 29.9 inch low will move off the southern new england 
coast today. a broad 30.1 inch high will then build across the lower 
great lakes tonight through wednesday, then drift off the east coast 
thursday. a weak cold front will cross the lake thursday night 
through early friday before another 30.1 inch high builds across the 
upper great lakes friday and the lower great lakes by saturday night.


loz062-071500-
lake ontario open waters from the niagara river to hamlin beach-
402 am edt tue jul 7 2026

.today...east winds 10 to 15 knots. waves 1 to 3 feet. 
.tonight...east winds 10 knots or less. waves 1 to 3 feet. 
.wednesday...light and variable winds. waves 1 foot or less. 
.wednesday night...southeast winds 10 knots or less becoming
southwest. waves 1 foot or less. 
.thursday...southwest winds 5 to 15 knots becoming west. showers
likely with a chance of thunderstorms thursday night. waves
2 feet or less. 
.friday...west winds 10 knots or less becoming north. showers
likely during the day. waves 1 foot or less. 
.saturday...northeast winds 10 knots or less becoming east. waves
1 foot or less. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kbuf 070802
glflo 
expires:202607071500;;555146

open lake forecast for lake ontario
national weather service buffalo ny
402 am edt tue jul 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 29.9 inch low will move off the southern new england 
coast today. a broad 30.1 inch high will then build across the lower 
great lakes tonight through wednesday, then drift off the east coast 
thursday. a weak cold front will cross the lake thursday night 
through early friday before another 30.1 inch high builds across the 
upper great lakes friday and the lower great lakes by saturday night.


loz063>065-071500-
lake ontario open waters from hamlin beach to the saint lawrence
river-
402 am edt tue jul 7 2026

.today...east winds 5 to 15 knots. waves 2 feet or less. 
.tonight...east winds 5 to 10 knots becoming southeast. waves
1 foot or less. 
.wednesday...south winds 10 knots or less becoming north. waves
1 foot or less. 
.wednesday night...southwest winds 10 knots or less. waves 1 foot
or less. 
.thursday...southwest winds 5 to 10 knots. showers likely with a
chance of thunderstorms thursday night. waves 1 foot or less. 
.friday...west winds 5 to 10 knots becoming north. showers likely
with a chance of thunderstorms during the day. waves 1 foot or
less. 
.saturday...northeast winds 10 knots or less becoming southeast.
waves 1 foot or less. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 071311
glfle 
expires:202607072015;;566422

open lake forecast for lake erie
national weather service cleveland oh
911 am edt tue jul 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...
a weak trough averaging 29.90 inches will linger near lake erie 
today. weak high pressure 30.00 inches will build in wednesday 
into thursday. a cold front will cross the lake on friday before 
high pressure 30.00 inches returns on saturday.


lez164>167-072015-
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-
911 am edt tue jul 7 2026

.this afternoon...northeast winds 5 to 10 knots. waves 1 to
2 feet. 
.tonight...northeast winds 10 knots or less. waves around 1 foot.
.wednesday...northeast winds less than 10 knots. waves 1 foot or
less. 
.wednesday night...light and variable winds becoming southwest
5 to 10 knots. waves 1 foot or less. 
.thursday...southwest winds 5 to 15 knots. showers with a chance
of thunderstorms thursday night. waves 2 feet or less. 
.friday...west winds 5 to 10 knots becoming northeast. showers
likely during the day, then a chance of showers and thunderstorms
friday night. waves 1 to 2 feet. 
.saturday...northeast winds 5 to 10 knots becoming east. waves
1 to 2 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 071311
glfle 
expires:202607072015;;566421

open lake forecast for lake erie
national weather service cleveland oh
911 am edt tue jul 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...
a weak trough averaging 29.90 inches will linger near lake erie 
today. weak high pressure 30.00 inches will build in wednesday 
into thursday. a cold front will cross the lake on friday before 
high pressure 30.00 inches returns on saturday.


lez162-163-072015-
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-
911 am edt tue jul 7 2026

.this afternoon...north winds 5 to 10 knots becoming northeast.
waves 2 feet or less. 
.tonight...east winds 10 knots or less becoming northeast. waves
1 foot or less. 
.wednesday...north winds less than 10 knots. waves 1 foot or
less. 
.wednesday night...southeast winds 10 knots or less becoming
southwest. waves 1 foot or less. 
.thursday...southwest winds 5 to 10 knots. showers with a chance
of thunderstorms thursday night. waves 1 foot or less. 
.friday...west winds 5 to 10 knots becoming northeast. a chance
of showers and thunderstorms. waves 1 foot or less. 
.saturday...northeast winds 5 to 10 knots becoming north. waves
1 foot or less. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 071311
glfle 
expires:202607072015;;566423

open lake forecast for lake erie
national weather service cleveland oh
911 am edt tue jul 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...
a weak trough averaging 29.90 inches will linger near lake erie 
today. weak high pressure 30.00 inches will build in wednesday 
into thursday. a cold front will cross the lake on friday before 
high pressure 30.00 inches returns on saturday.


lez061-168-169-072015-
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-
911 am edt tue jul 7 2026

.this afternoon...northeast winds 5 to 10 knots. waves 1 foot or
less. 
.tonight...northeast winds 10 knots or less. waves 1 foot or
less. 
.wednesday...east winds less than 10 knots. waves 1 foot or less.
.wednesday night...light and variable winds becoming south 5 to
10 knots. waves 1 foot or less. 
.thursday...southwest winds 5 to 10 knots. showers with a chance
of thunderstorms thursday night. waves 2 feet or less. 
.friday...west winds 5 to 10 knots becoming northeast. showers
likely with a chance of thunderstorms during the day. waves 1 to
2 feet. 
.saturday...northeast winds 5 to 10 knots becoming southeast.
waves 1 foot or less. 

winds and waves higher in and near thunderstorms.

$$

fzus63 kdtx 070730
glfsc 
expires:202607071530;;554293

lake st clair forecast
national weather service detroit/pontiac mi
330 am edt tue jul 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...high pressure, 30.10 inches, holds over the great
lakes today before departing into the appalachia region tomorrow.
a low pressure system and cold front will then move across the
region thursday, bringing the next chance for active weather.


lcz460-071530-
lake st clair-
330 am edt tue jul 7 2026

.today...north winds 5 to 10 knots. mostly sunny. waves 2 feet or
less.
.tonight...northeast winds 5 to 10 knots this evening becoming light
and variable. mostly clear. patchy fog early in the morning. waves 2
feet or less.
.wednesday...light and variable winds becoming southeast 5 to 10
knots early in the afternoon. mostly sunny. patchy fog early in the
morning. waves 2 feet or less.
.wednesday night...south winds 5 to 10 knots veering to the
southwest after midnight. mostly clear. waves 2 feet or less.
.thursday...southwest winds 5 to 10 knots increasing to 10 to 15
knots in the afternoon...then becoming west 5 to 10 knots in the
evening. mostly sunny in the morning...then a chance of showers and
thunderstorms in the afternoon. partly cloudy with light showers
likely and a chance of thunderstorms in the evening. waves 2 feet or
less.
.friday...northeast winds 10 to 15 knots. partly cloudy. showers
likely and a chance of thunderstorms. waves 2 feet or less.
.saturday...northeast winds 5 to 10 knots. partly cloudy. waves 2
feet or less.

$$

fzus63 kdtx 070730
glflh 
expires:202607071530;;554231

open lake forecast for lake huron
national weather service detroit/pontiac mi
330 am edt tue jul 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...high pressure, 30.10 inches, holds over the great
lakes today before departing into the appalachia region tomorrow.
a low pressure system and cold front will then move across the
region thursday, bringing the next chance for active weather.


lhz361-071530-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
330 am edt tue jul 7 2026

.today...light and variable winds. waves 2 feet or less. 
.tonight...light and variable winds. waves 2 feet or less. 
.wednesday...light and variable winds. a chance of showers in the
afternoon. waves 2 feet or less. 
.wednesday night...light and variable winds. a chance of showers
in the evening...then showers after midnight. waves 2 feet or
less. 
.thursday...north winds 5 to 10 knots backing to the southwest
late in the afternoon...then veering to the northwest late in the
evening. showers likely. waves 2 feet or less. 
.friday...north winds 5 to 10 knots early in the morning becoming
light and variable. waves 2 feet or less. 
.saturday...light and variable winds becoming east 5 to 10 knots
. waves 2 feet or less. 


$$

fzus63 kdtx 070730
glflh 
expires:202607071530;;554232

open lake forecast for lake huron
national weather service detroit/pontiac mi
330 am edt tue jul 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...high pressure, 30.10 inches, holds over the great
lakes today before departing into the appalachia region tomorrow.
a low pressure system and cold front will then move across the
region thursday, bringing the next chance for active weather.


lhz362-363-071530-
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-
330 am edt tue jul 7 2026

.today...light and variable winds. waves 2 feet or less. 
.tonight...light and variable winds. waves 2 feet or less. 
.wednesday...light and variable winds becoming southeast 5 to
10 knots early in the afternoon. waves 2 feet or less. 
.wednesday night...northeast winds 5 to 10 knots  becoming light
and variable. a chance of showers. waves 1 to 3 feet. 
.thursday...light and variable winds becoming south 5 to
10 knots. showers likely in the morning...then showers late in
the morning. a chance of showers late in the afternoon. waves
2 feet or less. 
.friday...north winds 5 to 10 knots becoming light and variable.
waves 2 feet or less. 
.saturday...light and variable winds. waves 2 feet or less. 


$$

fzus63 kdtx 070730
glflh 
expires:202607071530;;554233

open lake forecast for lake huron
national weather service detroit/pontiac mi
330 am edt tue jul 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...high pressure, 30.10 inches, holds over the great
lakes today before departing into the appalachia region tomorrow.
a low pressure system and cold front will then move across the
region thursday, bringing the next chance for active weather.


lhz462>464-071530-
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-
330 am edt tue jul 7 2026

.today...light and variable winds becoming north 5 to 10 knots in
the afternoon. waves 2 feet or less. 
.tonight...north winds 5 to 10 knots early in the evening
becoming light and variable. patchy fog after midnight. waves
2 feet or less. 
.wednesday...light and variable winds becoming southeast 5 to
10 knots early in the afternoon. patchy fog in the morning. waves
2 feet or less. 
.wednesday night...south winds 5 to 10 knots veering to the
southwest after midnight. waves 2 feet or less. 
.thursday...southwest winds 5 to 10 knots. showers likely. a
chance of thunderstorms late in the afternoon. waves 2 feet or
less. 
.friday...north winds 5 to 10 knots. waves 1 to 3 feet. 
.saturday...northeast winds 5 to 10 knots. waves 2 feet or less. 


$$

fzus63 kmkx 070800
glflm 
expires:202607071515;;554956

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

high pressure around 30.1 inches will remain in place over the 
upper great lakes region today. expect developing south winds 
over northern portions of the lake, with light and variable winds 
to the south. south southwest winds should then increase tonight 
and become gusty and southerly wednesday, as weak low pressure 
around 29.8 inches and an accompanying cold front approaches from 
the northern plains. gusty southwest winds wednesday night will 
become northwest to north behind the frontal passage thursday into
friday, with high pressure around 30.0 inches building into the 
the upper great lakes region.


lmz080-669-671-673-675-777-779-870-872-874-876-878-071515-
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-
300 am cdt tue jul 7 2026

sheboygan wi to pentwater mi south...

.today...north winds 5 to 10 kt increasing to 10 to 15 kt. waves
1 to 2 ft. 
.tonight...west winds 5 to 10 kt becoming southwest. waves 1 ft
or less. 
.wednesday...southwest winds 5 to 10 kt becoming south 10 to
20 kt. waves 1 to 3 ft building to 2 to 4 ft. 
.wednesday night...south winds 10 to 20 kt becoming southwest.
chance of showers. waves 2 to 4 ft. 
.thursday...southwest winds 10 to 20 kt. showers likely in the
morning, then chance of showers and thunderstorms in the
afternoon. waves 1 to 3 ft. 
.thursday night...northwest winds 10 to 20 kt becoming north
10 to 15 kt. chance of showers and thunderstorms. waves 1 to
2 ft. 
.friday...north winds 10 to 20 kt. waves 1 to 3 ft. 
.saturday...northeast winds 5 to 10 kt becoming north 10 to
20 kt. waves 1 to 2 ft.  

$$

fzus63 kmkx 070800
glflm 
expires:202607071515;;554955

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

high pressure around 30.1 inches will remain in place over the 
upper great lakes region today. expect developing south winds 
over northern portions of the lake, with light and variable winds 
to the south. south southwest winds should then increase tonight 
and become gusty and southerly wednesday, as weak low pressure 
around 29.8 inches and an accompanying cold front approaches from 
the northern plains. gusty southwest winds wednesday night will 
become northwest to north behind the frontal passage thursday into
friday, with high pressure around 30.0 inches building into the 
the upper great lakes region.


lmz261-362-364-366-563-565-567-868-071515-
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-
300 am cdt tue jul 7 2026

sheboygan wi to pentwater mi north...

.today...southwest winds 5 to 10 kt increasing to 10 to 20 kt.
waves 1 to 2 ft. 
.tonight...southwest winds 10 to 15 kt becoming south 5 to 10 kt.
isolated showers overnight. waves 1 to 2 ft. 
.wednesday...south winds 10 to 15 kt becoming southwest 10 to
20 kt. chance of showers. waves 1 to 3 ft building to 2 to 4 ft. 
.wednesday night...southwest winds 10 to 20 kt becoming west.
showers with a chance of thunderstorms. waves 2 to 4 ft. 
.thursday...northwest winds 10 to 20 kt becoming north. chance of
showers. waves 1 to 3 ft. 
.thursday night...north winds 10 to 20 kt diminishing to 10 to
15 kt. waves 1 to 3 ft. 
.friday...northeast winds 10 to 15 kt becoming north 10 to 20 kt.
waves 1 to 3 ft. 
.saturday...southeast winds 10 to 15 kt veering to west 10 to
20 kt. waves 1 ft or less.  

$$

fzus63 kmqt 070801
glfls 
expires:202607072000;;555013

open lake forecast for lake superior
national weather service marquette mi
400 am edt tue jul 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 29.5 inch low over hudson bay is extending weak 30.0 inch 
troughing over the lake this morning. this trough retreats north of 
the lake today as a 30.1 inch high over the northern plains extends 
30.0 inch ridging over the upper great lakes through tonight. as the 
hudson low moves into northern quebec throughout wednesday, it will 
send a trough as low as 29.8 inches over the upper great lakes. weak 
high pressure to 30.0 inches then builds over lake superior and 
northern ontario thursday and friday. saturday, the high builds to 
30.1 inches as it shifts towards southern ontario. the high 
continues to shift south sunday into monday as low pressure of at 
least 29.7 inches moves across northern ontario.




lsz265-072000-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
401 am edt tue jul 7 2026

.early this morning...southwest winds 10 to 20 knots. waves calm
to 2 feet. 
.today...west winds 10 to 20 knots veering north in the
afternoon, then becoming southeast 5 to 15 knots late. a slight
chance of showers through early afternoon. waves calm to 2 feet. 
.tonight...south winds 5 to 15 knots backing southeast after
midnight. a slight chance of showers after midnight. waves calm
to 2 feet. 
.wednesday...southeast winds 5 to 15 knots backing east in the
afternoon, then veering southeast late. a chance of showers. a
slight chance of thunderstorms by mid afternoon. waves calm to
2 feet. 
.wednesday night...east winds 5 to 15 knots backing northeast
after midnight. a chance of showers. waves calm to 2 feet. 
.thursday...north winds 5 to 15 knots. waves calm to 2 feet. 
.thursday night...northwest winds 5 to 15 knots. waves calm to
2 feet. 
.friday...east winds 5 to 15 knots veering southeast. waves calm
to 2 feet. 
.saturday...southeast winds 10 to 20 knots veering southwest.
waves calm to 2 feet. 

$$

fzus63 kmqt 070801
glfls 
expires:202607072000;;555014

open lake forecast for lake superior
national weather service marquette mi
400 am edt tue jul 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 29.5 inch low over hudson bay is extending weak 30.0 inch 
troughing over the lake this morning. this trough retreats north of 
the lake today as a 30.1 inch high over the northern plains extends 
30.0 inch ridging over the upper great lakes through tonight. as the 
hudson low moves into northern quebec throughout wednesday, it will 
send a trough as low as 29.8 inches over the upper great lakes. weak 
high pressure to 30.0 inches then builds over lake superior and 
northern ontario thursday and friday. saturday, the high builds to 
30.1 inches as it shifts towards southern ontario. the high 
continues to shift south sunday into monday as low pressure of at 
least 29.7 inches moves across northern ontario.




lsz266-072000-
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 am edt tue jul 7 2026

.early this morning...south winds 10 to 20 knots. waves calm to
2 feet. 
.today...west winds 5 to 15 knots veering northwest late. waves
calm to 2 feet. 
.tonight...southwest winds 5 to 15 knots backing southeast after
midnight, then veering south late. a slight chance of showers and
thunderstorms after midnight. waves calm to 2 feet. 
.wednesday...south winds 5 to 15 knots backing east in the
afternoon. a chance of showers. waves calm to 2 feet. 
.wednesday night...east winds 5 to 15 knots backing north after
midnight. a slight chance of thunderstorms through midnight. a
chance of showers. waves calm to 2 feet. 
.thursday...north winds 5 to 15 knots backing northwest by mid
afternoon. waves calm to 2 feet. 
.thursday night...northwest winds 5 to 15 knots. waves calm to
2 feet. 
.friday...northeast winds 5 to 15 knots veering south. waves calm
to 2 feet. 
.saturday...south winds 5 to 15 knots veering southwest. waves
calm to 2 feet. 

$$

fzus63 kmqt 070801
glfls 
expires:202607072000;;555011

open lake forecast for lake superior
national weather service marquette mi
400 am edt tue jul 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 29.5 inch low over hudson bay is extending weak 30.0 inch 
troughing over the lake this morning. this trough retreats north of 
the lake today as a 30.1 inch high over the northern plains extends 
30.0 inch ridging over the upper great lakes through tonight. as the 
hudson low moves into northern quebec throughout wednesday, it will 
send a trough as low as 29.8 inches over the upper great lakes. weak 
high pressure to 30.0 inches then builds over lake superior and 
northern ontario thursday and friday. saturday, the high builds to 
30.1 inches as it shifts towards southern ontario. the high 
continues to shift south sunday into monday as low pressure of at 
least 29.7 inches moves across northern ontario.




lsz263-072000-
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 am edt tue jul 7 2026

.early this morning...southwest winds 5 to 15 knots. waves calm
to 2 feet. 
.today...west winds 5 to 15 knots backing southwest late. a
slight chance of showers through early afternoon. waves calm to
2 feet. 
.tonight...southwest winds 5 to 15 knots becoming west less than
10 knots late. a chance of showers after midnight. waves calm to
2 feet. 
.wednesday...southwest winds less than 10 knots becoming east
5 to 15 knots in the afternoon, then backing northeast late. a
chance of showers and a slight chance of thunderstorms. waves
calm to 2 feet. 
.wednesday night...northeast winds less than 10 knots. a slight
chance of showers through midnight. waves calm to 2 feet. 
.thursday...northeast winds less than 10 knots. waves calm to
2 feet. 
.thursday night...west winds less than 10 knots. waves calm to
2 feet. 
.friday...northeast winds less than 10 knots veering southwest.
waves calm to 2 feet. 
.saturday...southwest winds 5 to 15 knots. waves calm to 2 feet. 

$$

fzus63 kmqt 070801
glfls 
expires:202607072000;;555010

open lake forecast for lake superior
national weather service marquette mi
400 am edt tue jul 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 29.5 inch low over hudson bay is extending weak 30.0 inch 
troughing over the lake this morning. this trough retreats north of 
the lake today as a 30.1 inch high over the northern plains extends 
30.0 inch ridging over the upper great lakes through tonight. as the 
hudson low moves into northern quebec throughout wednesday, it will 
send a trough as low as 29.8 inches over the upper great lakes. weak 
high pressure to 30.0 inches then builds over lake superior and 
northern ontario thursday and friday. saturday, the high builds to 
30.1 inches as it shifts towards southern ontario. the high 
continues to shift south sunday into monday as low pressure of at 
least 29.7 inches moves across northern ontario.




lsz162-072000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
401 am edt tue jul 7 2026 /301 am cdt tue jul 7 2026/

.early this morning...west winds 5 to 15 knots. waves calm to
2 feet. 
.today...west winds 5 to 15 knots backing southwest in the
afternoon. waves calm to 2 feet. 
.tonight...north winds 5 to 15 knots backing northwest late. a
chance of showers and a slight chance of thunderstorms after
midnight. waves calm to 2 feet. 
.wednesday...northeast winds 5 to 15 knots veering east late.
showers likely through early afternoon. a slight chance of
thunderstorms. a slight chance of showers by mid afternoon. waves
calm to 2 feet. 
.wednesday night...north winds less than 10 knots. a slight
chance of showers through midnight. waves calm to 2 feet. 
.thursday...northeast winds 5 to 15 knots becoming north less
than 10 knots by mid afternoon. waves calm to 2 feet. 
.thursday night...north winds less than 10 knots. waves calm to
2 feet. 
.friday...east winds less than 10 knots backing north. waves calm
to 2 feet. 
.saturday...southwest winds 5 to 15 knots veering west. waves
calm to 2 feet. 

$$

fzus63 kmqt 070801
glfls 
expires:202607072000;;555015

open lake forecast for lake superior
national weather service marquette mi
400 am edt tue jul 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 29.5 inch low over hudson bay is extending weak 30.0 inch 
troughing over the lake this morning. this trough retreats north of 
the lake today as a 30.1 inch high over the northern plains extends 
30.0 inch ridging over the upper great lakes through tonight. as the 
hudson low moves into northern quebec throughout wednesday, it will 
send a trough as low as 29.8 inches over the upper great lakes. weak 
high pressure to 30.0 inches then builds over lake superior and 
northern ontario thursday and friday. saturday, the high builds to 
30.1 inches as it shifts towards southern ontario. the high 
continues to shift south sunday into monday as low pressure of at 
least 29.7 inches moves across northern ontario.




lsz267-072000-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
401 am edt tue jul 7 2026

.early this morning...south winds 5 to 15 knots. waves calm to
2 feet. 
.today...south winds 5 to 15 knots veering west in the afternoon,
then veering northwest late. waves calm to 2 feet. 
.tonight...west winds 5 to 15 knots veering north after midnight,
then veering south late. a slight chance of showers. a slight
chance of thunderstorms after midnight. waves calm to 2 feet. 
.wednesday...east winds 5 to 15 knots backing northeast in the
afternoon, then veering east late. a chance of showers through
early afternoon, then showers likely by mid afternoon. waves calm
to 2 feet. 
.wednesday night...northeast winds 5 to 15 knots backing north
after midnight. a slight chance of thunderstorms through
midnight. a chance of showers. waves calm to 2 feet. 
.thursday...northwest winds 10 to 20 knots. waves calm to 2 feet.
.thursday night...northwest winds 5 to 15 knots. waves calm to
2 feet. 
.friday...northwest winds 5 to 15 knots backing south. waves calm
to 2 feet. 
.saturday...south winds 5 to 15 knots veering southwest. waves
calm to 2 feet. 

$$

fzus63 kmqt 070801
glfls 
expires:202607072000;;555012

open lake forecast for lake superior
national weather service marquette mi
400 am edt tue jul 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 29.5 inch low over hudson bay is extending weak 30.0 inch 
troughing over the lake this morning. this trough retreats north of 
the lake today as a 30.1 inch high over the northern plains extends 
30.0 inch ridging over the upper great lakes through tonight. as the 
hudson low moves into northern quebec throughout wednesday, it will 
send a trough as low as 29.8 inches over the upper great lakes. weak 
high pressure to 30.0 inches then builds over lake superior and 
northern ontario thursday and friday. saturday, the high builds to 
30.1 inches as it shifts towards southern ontario. the high 
continues to shift south sunday into monday as low pressure of at 
least 29.7 inches moves across northern ontario.




lsz264-072000-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
401 am edt tue jul 7 2026

.early this morning...southwest winds 5 to 15 knots. waves calm
to 2 feet. 
.today...west winds 5 to 15 knots backing southwest late. a
slight chance of showers through early afternoon. waves calm to
2 feet. 
.tonight...southwest winds 5 to 15 knots diminishing to less than
10 knots after midnight, then veering west late. a slight chance
of showers after midnight. waves calm to 2 feet. 
.wednesday...southwest winds less than 10 knots backing south in
the afternoon. a chance of showers through early afternoon. waves
calm to 2 feet. 
.wednesday night...south winds less than 10 knots backing
northeast after midnight. a slight chance of showers through
midnight. waves calm to 2 feet. 
.thursday...north winds less than 10 knots backing west by mid
afternoon. waves calm to 2 feet. 
.thursday night...west winds less than 10 knots veering northwest
after midnight. waves calm to 2 feet. 
.friday...south winds less than 10 knots increasing to 5 to
15 knots. waves calm to 2 feet. 
.saturday...southwest winds 5 to 15 knots. waves calm to 2 feet. 

$$