fzus61 kbuf 030203
glflo 
expires:202507030900;;781689

open lake forecast for lake ontario
national weather service buffalo ny
1002 pm edt wed jul 2 2025

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 compact 29.6 surface low over central quebec tonight 
will swing a weak cold front slowly across the lake later 
tonight and tomorrow. an expansive 30.1 inch area of high 
pressure will then build across the great lakes thursday night and 
friday...before drifting to the eastern seaboard saturday. a wavy 
cold frontal boundary is then forecast to slowly push southeastward 
across the upper great lakes and southern ontario during sunday. 
this will be followed by an 30.1 inch area of high pressure that 
will settle over the lake through the day monday.


loz063>065-030900-
lake ontario open waters from hamlin beach to the saint lawrence
river-
1002 pm edt wed jul 2 2025

.rest of tonight...west winds 5 to 15 knots. a chance of showers
and thunderstorms late this evening. a chance of showers and
thunderstorms late. waves 1 to 2 feet. 
.thursday...west winds 5 to 10 knots. a chance of showers and
thunderstorms in the morning. waves 1 to 2 feet. 
.thursday night...west winds 5 to 10 knots becoming north. waves
2 feet or less. 
.friday...north winds 5 to 10 knots becoming southwest. waves
1 foot or less. 
.friday night...southwest winds 5 to 10 knots becoming south.
waves 1 foot or less. 
.saturday...south winds 5 to 10 knots. waves 2 feet or less. 
.sunday...southwest winds 5 to 15 knots. waves 1 to 3 feet. 
.monday...southwest winds 10 to 15 knots becoming north. a chance
of showers and thunderstorms. waves 1 to 3 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kbuf 030203
glflo 
expires:202507030900;;781688

open lake forecast for lake ontario
national weather service buffalo ny
1002 pm edt wed jul 2 2025

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 compact 29.6 surface low over central quebec tonight 
will swing a weak cold front slowly across the lake later 
tonight and tomorrow. an expansive 30.1 inch area of high 
pressure will then build across the great lakes thursday night and 
friday...before drifting to the eastern seaboard saturday. a wavy 
cold frontal boundary is then forecast to slowly push southeastward 
across the upper great lakes and southern ontario during sunday. 
this will be followed by an 30.1 inch area of high pressure that 
will settle over the lake through the day monday.


loz062-030900-
lake ontario open waters from the niagara river to hamlin beach-
1002 pm edt wed jul 2 2025

.rest of tonight...southwest winds 5 to 15 knots becoming west. a
chance of showers and thunderstorms late this evening, then a
chance of showers after midnight. a chance of showers and
thunderstorms late. waves 1 to 2 feet. 
.thursday...northwest winds 5 to 10 knots becoming west. a chance
of showers and thunderstorms early. waves 1 foot or less. 
.thursday night...northwest winds 5 to 10 knots becoming north.
waves 1 to 2 feet. 
.friday...north winds 10 knots or less becoming southeast. waves
1 foot or less. 
.friday night...southeast winds 10 knots or less becoming south.
waves 1 foot or less. 
.saturday...south winds 5 to 15 knots becoming southwest. waves
2 feet or less. 
.sunday...southwest winds 10 to 15 knots. waves 1 to 3 feet. 
.monday...west winds 10 to 15 knots becoming north. a chance of
showers and thunderstorms. waves 1 to 2 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 030113
glfle 
expires:202507030815;;780280

open lake forecast for lake erie
national weather service cleveland oh
913 pm edt wed jul 2 2025

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 trough averaging 29.90 inches settles over lake erie tonight 
into early thursday. a weak cold front will cross the lake late 
thursday, followed by building high pressure 30.10 inches on 
friday before it departs to the east coast on saturday and sunday.


lez162-163-030815-
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-
913 pm edt wed jul 2 2025

.rest of tonight...west winds 5 to 10 knots. waves 1 foot or
less. 
.thursday...northwest winds 10 knots or less becoming east.
isolated showers and thunderstorms late. waves 1 foot or less. 
.thursday night...east winds 5 to 10 knots becoming southeast.
waves 1 foot or less. 
.friday...southeast winds 5 to 10 knots becoming east. waves
1 foot or less. 
.friday night...southeast winds around 10 knots becoming south.
waves 1 foot or less. 
.saturday...southwest winds 5 to 10 knots becoming south. waves
2 feet or less. 
.sunday...southwest winds around 10 knots becoming west. a chance
of showers sunday night. waves 1 to 2 feet. 
.monday...west winds around 10 knots becoming northeast. a chance
of showers and thunderstorms during the day. waves 1 foot or
less. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 030113
glfle 
expires:202507030815;;780282

open lake forecast for lake erie
national weather service cleveland oh
913 pm edt wed jul 2 2025

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 trough averaging 29.90 inches settles over lake erie tonight 
into early thursday. a weak cold front will cross the lake late 
thursday, followed by building high pressure 30.10 inches on 
friday before it departs to the east coast on saturday and sunday.


lez061-168-169-030815-
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-
913 pm edt wed jul 2 2025

.rest of tonight...southwest winds 5 to 10 knots. a slight chance
of showers and thunderstorms, then a slight chance of showers
late. waves 1 foot or less. 
.thursday...west winds 5 to 10 knots. waves around 1 foot. 
.thursday night...west winds 5 to 10 knots becoming northeast.
waves 1 foot or less. 
.friday...east winds less than 10 knots becoming northeast. waves
1 foot or less. 
.friday night...east winds 10 knots or less becoming south. waves
1 foot or less. 
.saturday...south winds 10 knots or less. waves 2 feet or less. 
.sunday...southwest winds 5 to 10 knots. waves 1 to 2 feet. 
.monday...west winds 5 to 10 knots becoming north. a chance of
showers and thunderstorms. waves 1 to 2 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 030113
glfle 
expires:202507030815;;780281

open lake forecast for lake erie
national weather service cleveland oh
913 pm edt wed jul 2 2025

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 trough averaging 29.90 inches settles over lake erie tonight 
into early thursday. a weak cold front will cross the lake late 
thursday, followed by building high pressure 30.10 inches on 
friday before it departs to the east coast on saturday and sunday.


lez164>167-030815-
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-
913 pm edt wed jul 2 2025

.rest of tonight...southwest winds 5 to 10 knots becoming west. a
slight chance of showers and thunderstorms late this evening.
waves 1 foot or less. 
.thursday...west winds 5 to 10 knots becoming northwest. waves
2 feet or less. 
.thursday night...north winds 5 to 10 knots becoming east. waves
1 foot or less. 
.friday...east winds 5 to 10 knots. waves 1 foot or less. 
.friday night...east winds 5 to 10 knots becoming south. waves
1 foot or less. 
.saturday...southwest winds 5 to 15 knots becoming south. waves
2 feet or less. 
.sunday...southwest winds 10 to 15 knots becoming west. a chance
of showers sunday night. waves 1 to 3 feet. 
.monday...west winds 10 to 15 knots becoming north. a chance of
showers and thunderstorms during the day. waves 1 to 2 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus63 kdtx 030208
glfsc 
expires:202507031015;;782097

lake st clair forecast
national weather service detroit/pontiac mi
1008 pm edt wed jul 2 2025

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

.synopsis...a weak cold front, 29.80 inches, drops through the
area early thursday morning, then high pressure, 30.10 inches,
builds directly across the region latter half of thursday. a warm
front passes through on saturday with warmer and unsettled
conditions for the second half of the weekend.


lcz460-031015-
lake st clair-
1008 pm edt wed jul 2 2025

.rest of tonight...west winds 5 to 10 knots. becoming clear. 
waves 2 feet or less.
.thursday...northwest winds 5 to 10 knots veering to the north in
the afternoon. sunny. waves 2 feet or less.
.thursday night...northeast winds 5 to 10 knots. clear. waves 2 feet
or less.
.friday...southeast winds 5 to 10 knots. sunny. waves 2 feet or
less.
.friday night...south winds 5 to 10 knots. mostly clear. waves 2
feet or less.
.saturday...southwest winds 5 to 10 knots becoming south 10 to 15
knots in the evening. mostly clear. waves 2 feet or less.
.sunday...west winds 10 to 15 knots. mostly clear. a chance of
showers and thunderstorms. waves 2 feet or less.
.monday...north winds 10 to 15 knots. partly cloudy. a chance of
showers and thunderstorms. waves 2 feet or less.

$$

fzus63 kdtx 030207
glflh 
expires:202507031015;;782069

open lake forecast for lake huron
national weather service detroit/pontiac mi
1007 pm edt wed jul 2 2025

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...a weak cold front, 29.80 inches, drops through the
area early thursday morning, then high pressure, 30.10 inches,
builds directly across the region latter half of thursday. a warm
front passes through on saturday with warmer and unsettled
conditions for the second half of the weekend.


lhz362-363-031015-
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-
1007 pm edt wed jul 2 2025

.rest of tonight...southwest winds 5 to 10 knots veering to the
northwest early in the morning. waves 2 feet or less. 
.thursday...northwest winds 5 to 10 knots. waves 2 feet or less. 
.thursday night...north winds 5 to 10 knots early in the evening
becoming light and variable. waves 2 feet or less. 
.friday...light and variable winds becoming southeast 5 to
10 knots in the late morning and afternoon. waves 2 feet or less.
.friday night...southeast winds 10 to 15 knots veering to the
south after midnight. waves 1 to 3 feet. 
.saturday...south winds 10 to 15 knots. waves 2 to 4 feet
building to 3 to 5 feet. 
.sunday...southwest winds 10 to 15 knots. a chance of
thunderstorms until early evening. a chance of showers. waves
2 to 4 feet subsiding to 1 to 3 feet in the late evening and
early morning. 
.monday...north winds 10 to 15 knots decreasing to 5 to 10 knots
until early morning. a chance of showers early in the morning.
waves 1 to 3 feet. 


$$

fzus63 kdtx 030207
glflh 
expires:202507031015;;782070

open lake forecast for lake huron
national weather service detroit/pontiac mi
1007 pm edt wed jul 2 2025

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...a weak cold front, 29.80 inches, drops through the
area early thursday morning, then high pressure, 30.10 inches,
builds directly across the region latter half of thursday. a warm
front passes through on saturday with warmer and unsettled
conditions for the second half of the weekend.


lhz462>464-031015-
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-
1007 pm edt wed jul 2 2025

.rest of tonight...southwest winds 5 to 10 knots veering to the
west early in the morning. waves 2 feet or less. 
.thursday...north winds 5 to 10 knots. waves 2 feet or less. 
.thursday night...north winds 5 to 10 knots early in the evening
becoming light and variable. waves 2 feet or less. 
.friday...light and variable winds becoming east 5 to 10 knots
early in the afternoon. waves 2 feet or less. 
.friday night...southeast winds 5 to 10 knots becoming south
10 to 15 knots after midnight. waves 2 feet or less. 
.saturday...south winds 10 to 15 knots. waves 1 to 3 feet. 
.sunday...southwest winds 10 to 15 knots veering to the northwest
in the late evening and early morning. a chance of showers and
thunderstorms early in the evening. a chance of showers in the
late evening and early morning. waves 1 to 3 feet. 
.monday...north winds 10 to 15 knots decreasing to 5 to 10 knots
in the late evening and early morning. a chance of showers. waves
1 to 3 feet. 


$$

fzus63 kdtx 030207
glflh 
expires:202507031015;;782068

open lake forecast for lake huron
national weather service detroit/pontiac mi
1007 pm edt wed jul 2 2025

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...a weak cold front, 29.80 inches, drops through the
area early thursday morning, then high pressure, 30.10 inches,
builds directly across the region latter half of thursday. a warm
front passes through on saturday with warmer and unsettled
conditions for the second half of the weekend.


lhz361-031015-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
1007 pm edt wed jul 2 2025

.rest of tonight...northwest winds 5 to 10 knots this evening
becoming light and variable...then becoming west 5 to 10 knots
early in the morning. waves 2 feet or less. 
.thursday...northwest winds 5 to 10 knots backing to the west
late in the afternoon. waves 2 feet or less. 
.thursday night...west winds 5 to 10 knots early in the evening
becoming light and variable. waves 2 feet or less. 
.friday...light and variable winds becoming southeast 5 to
10 knots in the late morning and afternoon. waves 2 feet or less.
.friday night...southeast winds 10 to 15 knots decreasing to 5 to
10 knots in the late evening and overnight. waves 1 to 3 feet. 
.saturday...south winds 5 to 10 knots. a chance of showers late
in the afternoon. waves 1 to 3 feet. 
.sunday...southwest winds 5 to 10 knots veering to the northwest
early in the evening...then veering to the north in the late
evening and early morning. a chance of showers. a chance of
thunderstorms in the late morning and early afternoon. waves 1 to
3 feet. 
.monday...north winds 5 to 10 knots. waves 2 feet or less. 


$$

fzus63 kmkx 030158
glflm 
expires:202507030915;;781358

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
858 pm cdt wed jul 2 2025

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 30.0 inches will linger across the middle 
mississippi river valley into thursday, before moving to the east
by friday. light west winds will continue tonight. light north to
northeast winds thursday into thursday night will shift south to 
southwest on friday, as a warm front moves north through the 
region. 

south to southwest winds will then increase friday night into 
saturday night, as low pressure around 29.6 inches moves across 
lake superior and ontario and pulls a cold front through the 
region. expecting west winds behind this front on sunday, veering
north into sunday night. 

thunderstorms will continue at times across the lake late this
evening. additional chances are expected thursday afternoon 
through thursday night, focused on the southern half of the lake. 
more widespread chances for showers and thunderstorms expected 
later saturday into sunday as the cold front crosses the lake.


lmz080-669-671-673-675-777-779-870-872-874-876-878-030915-
lake michigan from michigan city in to st. joseph mi 5 nm
offshore to mid lake-
lake michigan from sheboygan to port washington wi 5 nm offshore
to mid lake-
lake michigan from port washington to north point light wi 5 nm
offshore to mid lake-
lake michigan from north point light to wind point wi 5 nm
offshore to mid lake-
lake michigan from wind point wi to winthrop harbor il 5 nm
offshore to mid lake-
lake michigan from winthrop harbor to wilmette harbor il 5 nm
offshore to mid lake-
lake michigan from wilmette harbor il to michigan city in 5 nm
offshore to mid lake-
lake michigan from whitehall to pentwater mi 5 nm offshore to mid
lake-
lake michigan from grand haven to whitehall mi 5 nm offshore to
mid lake-
lake michigan from holland to grand haven mi 5 nm offshore to mid
lake-
lake michigan from south haven to holland mi 5 nm offshore to mid
lake-
lake michigan from st. joseph to south haven mi 5 nm offshore to
mid lake-
858 pm cdt wed jul 2 2025

sheboygan wi to pentwater mi south...

.rest of tonight...southwest winds 5 to 10 kt becoming northwest.
chance of showers and slight chance of thunderstorms through
early evening. waves 1 to 2 ft. 
.thursday...northwest winds 5 to 10 kt becoming northeast 10 to
15 kt. waves 1 ft or less. 
.thursday night...northeast winds 5 to 10 kt becoming southeast.
waves 1 ft or less. 
.friday...south winds 10 to 15 kt increasing to 10 to 20 kt.
waves 1 to 3 ft. 
.friday night...south winds 10 to 15 kt increasing to 10 to
20 kt. waves 1 to 3 ft. 
.saturday...south winds 10 to 20 kt increasing to 15 to 25 kt.
waves 3 to 5 ft. 
.saturday night...south winds 10 to 20 kt becoming southwest.
waves 3 to 5 ft. 
.sunday...west winds 10 to 20 kt becoming northwest. chance of
showers. waves 3 to 5 ft. 
.monday...north winds 10 to 20 kt. waves 2 to 4 ft.  

$$

fzus63 kmkx 030158
glflm 
expires:202507030915;;781357

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
858 pm cdt wed jul 2 2025

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 30.0 inches will linger across the middle 
mississippi river valley into thursday, before moving to the east
by friday. light west winds will continue tonight. light north to
northeast winds thursday into thursday night will shift south to 
southwest on friday, as a warm front moves north through the 
region. 

south to southwest winds will then increase friday night into 
saturday night, as low pressure around 29.6 inches moves across 
lake superior and ontario and pulls a cold front through the 
region. expecting west winds behind this front on sunday, veering
north into sunday night. 

thunderstorms will continue at times across the lake late this
evening. additional chances are expected thursday afternoon 
through thursday night, focused on the southern half of the lake. 
more widespread chances for showers and thunderstorms expected 
later saturday into sunday as the cold front crosses the lake.


lmz261-362-364-366-563-565-567-868-030915-
lake michigan from seul choix point to rock island passage 5 nm
offshore to mid lake-
lake michigan south of a line from seul choix point to the
mackinac bridge and north of a line from charlevoix mi to south
fox island 5 nm offshore-
lake michigan from charlevoix to point betsie mi 5 nm offshore to
mid lake-
lake michigan from point betsie to manistee mi 5 nm offshore to
mid lake-
lake michigan from rock island passage to sturgeon bay wi-
lake michigan from sturgeon bay to two rivers wi 5 nm offshore to
mid lake-
lake michigan from two rivers to sheboygan wi 5 nm offshore to
mid lake-
lake michigan from pentwater to manistee mi 5 nm offshore to mid
lake-
858 pm cdt wed jul 2 2025

sheboygan wi to pentwater mi north...

.rest of tonight...southwest winds 5 to 10 kt veering to north.
chance of showers and slight chance of thunderstorms through
early evening. waves 1 to 2 ft. 
.thursday...northeast winds 5 to 10 kt increasing to 10 to 15 kt.
waves 1 to 2 ft. 
.thursday night...northeast winds 5 to 10 kt becoming southeast.
waves 1 to 2 ft. 
.friday...south winds 10 to 15 kt increasing to 10 to 20 kt.
waves 1 to 3 ft. 
.friday night...south winds 10 to 20 kt. waves 1 to 3 ft. 
.saturday...southwest winds 15 to 25 kt becoming south to 30 kt.
waves 3 to 5 ft. 
.saturday night...south winds to 30 kt becoming southwest 10 to
20 kt. chance of showers and thunderstorms. waves 3 to 5 ft. 
.sunday...west winds 10 to 20 kt becoming northwest. chance of
showers. waves 3 to 5 ft. 
.monday...north winds 10 to 20 kt. waves 1 to 3 ft.  

$$

fzus63 kmqt 030203
glfls 
expires:202507030800;;781704

open lake forecast for lake superior
national weather service marquette mi
1002 pm edt wed jul 2 2025

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 weak ridge of 30.0 inches builds in across the upper great lakes 
tonight and remains across the area through thursday evening. by 
friday morning, the ridging will build to 30.1 inches as it shifts 
over southern ontario and the lower great lakes while a 29.3 inch 
low over northern saskatchewan drapes a trough of 29.6 inches over 
the northern great plains. by saturday, the ridge will shift over 
the east coast and as the low moves over hudson bay, troughing of 
29.8 inches approaches the western extent of lake superior. the 
trough then proceeds over the lake through sunday morning, with 30.1 
inch high pressure building over the plains. this high moves over 
the great lakes basin for the early portions of next week.



lsz162-030800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1002 pm edt wed jul 2 2025 /902 pm cdt wed jul 2 2025/

.rest of tonight...north winds 5 to 15 knots veering northeast
after midnight. haze. waves calm to 2 feet. 
.thursday...northeast winds 5 to 15 knots increasing to 10 to
20 knots in the afternoon. haze through early afternoon. waves
calm to 2 feet. 
.thursday night...northeast winds 5 to 15 knots. waves calm to
2 feet. 
.friday...east winds 5 to 15 knots increasing to 10 to 20 knots
by mid afternoon. a slight chance of showers and thunderstorms.
waves calm to 2 feet. 
.friday night...southwest winds 10 to 20 knots. a chance of
showers through midnight. a chance of thunderstorms. showers
likely after midnight. waves calm to 2 feet. 
.saturday...southwest winds 10 to 20 knots. showers and a chance
of thunderstorms. waves calm to 2 feet. 
.saturday night...north winds 10 to 20 knots. showers likely
through midnight. a chance of thunderstorms. a chance of showers
after midnight. waves calm to 2 feet. 
.sunday...east winds 10 to 20 knots becoming northeast 5 to
15 knots. waves calm to 2 feet. 
.monday...east winds 5 to 15 knots backing northeast. waves calm
to 2 feet. 

$$

fzus63 kmqt 030203
glfls 
expires:202507030800;;781705

open lake forecast for lake superior
national weather service marquette mi
1002 pm edt wed jul 2 2025

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 weak ridge of 30.0 inches builds in across the upper great lakes 
tonight and remains across the area through thursday evening. by 
friday morning, the ridging will build to 30.1 inches as it shifts 
over southern ontario and the lower great lakes while a 29.3 inch 
low over northern saskatchewan drapes a trough of 29.6 inches over 
the northern great plains. by saturday, the ridge will shift over 
the east coast and as the low moves over hudson bay, troughing of 
29.8 inches approaches the western extent of lake superior. the 
trough then proceeds over the lake through sunday morning, with 30.1 
inch high pressure building over the plains. this high moves over 
the great lakes basin for the early portions of next week.



lsz263-030800-
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-
1002 pm edt wed jul 2 2025

.rest of tonight...north winds 5 to 15 knots veering northeast
after midnight, then diminishing to less than 10 knots late.
waves calm to 2 feet. 
.thursday...northeast winds 5 to 15 knots veering east in the
afternoon. haze through early afternoon. waves calm to 2 feet. 
.thursday night...east winds 5 to 15 knots veering southeast
after midnight. waves calm to 2 feet. 
.friday...south winds 5 to 15 knots backing east by mid
afternoon. a slight chance of showers and thunderstorms. waves
calm to 2 feet. 
.friday night...southwest winds 5 to 15 knots. a chance of
showers and thunderstorms. waves building to 1 to 3 feet. 
.saturday...southwest winds 5 to 15 knots. showers and a chance
of thunderstorms. waves subsiding to calm to 2 feet. 
.saturday night...north winds 5 to 15 knots increasing to 10 to
20 knots after midnight. showers likely through midnight. a
chance of thunderstorms. a chance of showers after midnight.
waves building to 1 to 3 feet. 
.sunday...northeast winds 10 to 20 knots becoming north 5 to
15 knots. waves subsiding to calm to 2 feet. 
.monday...east winds 5 to 15 knots veering southeast. waves calm
to 2 feet. 

$$

fzus63 kmqt 030203
glfls 
expires:202507030800;;781706

open lake forecast for lake superior
national weather service marquette mi
1002 pm edt wed jul 2 2025

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 weak ridge of 30.0 inches builds in across the upper great lakes 
tonight and remains across the area through thursday evening. by 
friday morning, the ridging will build to 30.1 inches as it shifts 
over southern ontario and the lower great lakes while a 29.3 inch 
low over northern saskatchewan drapes a trough of 29.6 inches over 
the northern great plains. by saturday, the ridge will shift over 
the east coast and as the low moves over hudson bay, troughing of 
29.8 inches approaches the western extent of lake superior. the 
trough then proceeds over the lake through sunday morning, with 30.1 
inch high pressure building over the plains. this high moves over 
the great lakes basin for the early portions of next week.



lsz264-030800-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
1002 pm edt wed jul 2 2025

.rest of tonight...north winds less than 10 knots. waves calm to
2 feet. 
.thursday...northeast winds 5 to 15 knots veering southeast late.
waves calm to 2 feet. 
.thursday night...southeast winds 5 to 15 knots. waves calm to
2 feet. 
.friday...southeast winds 5 to 15 knots. waves building to 1 to
3 feet. 
.friday night...south winds 5 to 15 knots veering southwest after
midnight. a chance of showers and thunderstorms. waves 1 to
3 feet. 
.saturday...southwest winds 5 to 15 knots. a chance of showers
through early afternoon. a chance of thunderstorms. showers
likely by mid afternoon. waves subsiding to calm to 2 feet. 
.saturday night...north winds 5 to 15 knots increasing to 10 to
20 knots after midnight. showers likely through midnight. a
chance of thunderstorms. a chance of showers after midnight.
waves building to 1 to 3 feet. 
.sunday...north winds 10 to 20 knots becoming northwest 5 to
15 knots. a chance of showers. waves subsiding to calm to 2 feet.
.monday...east winds 5 to 15 knots veering south. waves calm to
2 feet. 

$$

fzus63 kmqt 030203
glfls 
expires:202507030800;;781707

open lake forecast for lake superior
national weather service marquette mi
1002 pm edt wed jul 2 2025

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 weak ridge of 30.0 inches builds in across the upper great lakes 
tonight and remains across the area through thursday evening. by 
friday morning, the ridging will build to 30.1 inches as it shifts 
over southern ontario and the lower great lakes while a 29.3 inch 
low over northern saskatchewan drapes a trough of 29.6 inches over 
the northern great plains. by saturday, the ridge will shift over 
the east coast and as the low moves over hudson bay, troughing of 
29.8 inches approaches the western extent of lake superior. the 
trough then proceeds over the lake through sunday morning, with 30.1 
inch high pressure building over the plains. this high moves over 
the great lakes basin for the early portions of next week.



lsz265-030800-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
1002 pm edt wed jul 2 2025

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

$$

fzus63 kmqt 030203
glfls 
expires:202507030800;;781708

open lake forecast for lake superior
national weather service marquette mi
1002 pm edt wed jul 2 2025

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 weak ridge of 30.0 inches builds in across the upper great lakes 
tonight and remains across the area through thursday evening. by 
friday morning, the ridging will build to 30.1 inches as it shifts 
over southern ontario and the lower great lakes while a 29.3 inch 
low over northern saskatchewan drapes a trough of 29.6 inches over 
the northern great plains. by saturday, the ridge will shift over 
the east coast and as the low moves over hudson bay, troughing of 
29.8 inches approaches the western extent of lake superior. the 
trough then proceeds over the lake through sunday morning, with 30.1 
inch high pressure building over the plains. this high moves over 
the great lakes basin for the early portions of next week.



lsz266-030800-
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-
1002 pm edt wed jul 2 2025

.rest of tonight...northwest winds 5 to 15 knots veering north
after midnight. haze by midnight. patchy dense fog after
midnight. waves calm to 2 feet. 
.thursday...north winds 5 to 15 knots veering east late. waves
calm to 2 feet. 
.thursday night...southeast winds 5 to 15 knots increasing to
10 to 20 knots late. waves calm to 2 feet. 
.friday...southeast winds 10 to 20 knots increasing to 15 to
25 knots by mid afternoon. waves building to 1 to 3 feet. 
.friday night...south winds 15 to 25 knots. a chance of showers
and thunderstorms. waves building to 2 to 4 feet. 
.saturday...south winds 10 to 20 knots. a chance of showers
through early afternoon. a chance of thunderstorms. showers
likely by mid afternoon. waves subsiding to calm to 2 feet. 
.saturday night...south winds 10 to 20 knots backing north after
midnight. showers likely and a chance of thunderstorms. waves
calm to 2 feet. 
.sunday...north winds 15 to 25 knots diminishing to 10 to
20 knots. a chance of showers. waves building to 1 to 3 feet. 
.monday...north winds 10 to 20 knots becoming south 5 to
15 knots. waves subsiding to calm to 2 feet. 

$$

fzus63 kmqt 030203
glfls 
expires:202507030800;;781709

open lake forecast for lake superior
national weather service marquette mi
1002 pm edt wed jul 2 2025

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 weak ridge of 30.0 inches builds in across the upper great lakes 
tonight and remains across the area through thursday evening. by 
friday morning, the ridging will build to 30.1 inches as it shifts 
over southern ontario and the lower great lakes while a 29.3 inch 
low over northern saskatchewan drapes a trough of 29.6 inches over 
the northern great plains. by saturday, the ridge will shift over 
the east coast and as the low moves over hudson bay, troughing of 
29.8 inches approaches the western extent of lake superior. the 
trough then proceeds over the lake through sunday morning, with 30.1 
inch high pressure building over the plains. this high moves over 
the great lakes basin for the early portions of next week.



lsz267-030800-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
1002 pm edt wed jul 2 2025

.rest of tonight...northwest winds 5 to 15 knots veering north
late. haze. waves calm to 2 feet. 
.thursday...north winds 5 to 15 knots backing northwest in the
afternoon. waves calm to 2 feet. 
.thursday night...northwest winds 5 to 15 knots backing southeast
after midnight. waves calm to 2 feet. 
.friday...southeast winds 10 to 20 knots. waves building to 1 to
3 feet. 
.friday night...south winds 15 to 25 knots. a chance of showers
and a slight chance of thunderstorms. waves building to 2 to
4 feet. 
.saturday...south winds 10 to 20 knots. a chance of showers.
waves subsiding to calm to 2 feet. 
.saturday night...south winds 10 to 20 knots veering southwest
after midnight. showers and a chance of thunderstorms. waves calm
to 2 feet. 
.sunday...north winds 10 to 20 knots. a chance of showers. waves
building to 1 to 3 feet, then subsiding to calm to 2 feet. 
.monday...north winds 10 to 20 knots diminishing to 5 to
15 knots. waves calm to 2 feet. 

$$