fzus61 kbuf 250802
glflo 
expires:202506251500;;336876

open lake forecast for lake ontario
national weather service buffalo ny
402 am edt wed jun 25 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 weak cold front will settle south across the eastern 
great lakes region through the day today, then stall just south of 
the lake through friday morning. a 29.8 inch low is forecast to move 
from the central great lakes friday to southern quebec saturday. a 
30.1 inch surface high will track across and just east of the lake 
from saturday night through monday morning, providing mostly dry 
conditions for sunday and monday.


loz063>065-251500-
lake ontario open waters from hamlin beach to the saint lawrence
river-
402 am edt wed jun 25 2025

.today...west winds 10 knots or less becoming northwest. waves
1 foot or less. 
.tonight...north winds 10 knots or less becoming northeast. waves
2 feet or less. 
.thursday...northeast winds 10 to 15 knots. a chance of showers.
waves 1 to 3 feet. 
.thursday night...northeast winds 10 to 15 knots becoming east. a
chance of showers overnight. waves 1 to 3 feet. 
.friday...east winds 10 to 15 knots becoming south 15 to
20 knots. showers likely with a chance of thunderstorms during
the day, then showers with thunderstorms likely friday night.
waves 1 to 3 feet. 
.saturday...southwest winds 5 to 15 knots becoming west. showers
with a chance of thunderstorms during the day, then a chance of
showers saturday night. waves 1 to 3 feet. 
.sunday...west winds 5 to 10 knots becoming south. waves 1 foot
or less. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kbuf 250802
glflo 
expires:202506251500;;336875

open lake forecast for lake ontario
national weather service buffalo ny
402 am edt wed jun 25 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 weak cold front will settle south across the eastern 
great lakes region through the day today, then stall just south of 
the lake through friday morning. a 29.8 inch low is forecast to move 
from the central great lakes friday to southern quebec saturday. a 
30.1 inch surface high will track across and just east of the lake 
from saturday night through monday morning, providing mostly dry 
conditions for sunday and monday.


loz062-251500-
lake ontario open waters from the niagara river to hamlin beach-
402 am edt wed jun 25 2025

.today...west winds less than 10 knots. waves 1 foot or less. 
.tonight...northeast winds 10 knots or less becoming east. waves
2 feet or less. 
.thursday...east winds 10 to 15 knots increasing to 15 to
20 knots. a chance of showers. waves 1 to 3 feet. 
.thursday night...east winds 15 to 20 knots diminishing to 10 to
15 knots. a chance of showers overnight. waves 2 to 4 feet. 
.friday...east winds 10 to 15 knots becoming southwest. showers
likely with a chance of thunderstorms during the day, then
showers and thunderstorms likely friday night. waves 1 to 3 feet.
.saturday...west winds 5 to 10 knots becoming northwest. showers
likely with a chance of thunderstorms during the day. waves
2 feet or less. 
.sunday...west winds 5 to 10 knots becoming south. waves 1 foot
or less. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 250741
glfle 
expires:202506251415;;335952

open lake forecast for lake erie
national weather service cleveland oh
341 am edt wed jun 25 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 30.00 inches persists over lake erie through
friday. a cold front will track through late friday into friday
night. brief high pressure 30.00 inches saturday night into
sunday. 



lez165>167-251415-
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-
341 am edt wed jun 25 2025

.today...north winds 10 knots or less. patchy dense fog early. a
slight chance of showers and thunderstorms early, then a chance
of showers and thunderstorms. a slight chance of showers and
thunderstorms late. waves 1 foot or less. 
.tonight...northeast winds less than 10 knots. a slight chance of
showers and thunderstorms. waves 1 foot or less. 
.thursday...east winds 10 knots or less. a chance of showers and
thunderstorms in the afternoon. waves 1 foot or less. 
.thursday night...east winds 5 to 10 knots becoming southeast. a
chance of showers and thunderstorms. waves 1 foot or less. 
.friday...south winds 5 to 10 knots becoming southwest. a chance
of showers during the day, then showers likely with a chance of
thunderstorms friday night. waves 1 to 2 feet. 
.saturday...west winds 5 to 10 knots becoming southeast. a chance
of showers and thunderstorms during the day. waves 2 feet or
less. 
.sunday...south winds 5 to 10 knots. a chance of showers and
thunderstorms sunday night. waves 1 foot or less. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 250741
glfle 
expires:202506251415;;335953

open lake forecast for lake erie
national weather service cleveland oh
341 am edt wed jun 25 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 30.00 inches persists over lake erie through
friday. a cold front will track through late friday into friday
night. brief high pressure 30.00 inches saturday night into
sunday. 



lez061-168-169-251415-
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-
341 am edt wed jun 25 2025

.today...west winds less than 10 knots becoming north. a slight
chance of showers and thunderstorms early, then a chance of
showers and thunderstorms. a slight chance of showers and
thunderstorms late. patchy dense fog late this morning. waves
1 foot or less. 
.tonight...light and variable winds becoming northeast 5 to
10 knots. a slight chance of showers and thunderstorms. waves
1 foot or less. 
.thursday...east winds 5 to 10 knots becoming northeast. a chance
of showers and thunderstorms in the afternoon. waves 1 foot or
less. 
.thursday night...northeast winds 5 to 10 knots becoming east. a
chance of showers and thunderstorms. waves 1 foot or less. 
.friday...southwest winds 5 to 10 knots. a chance of showers
during the day, then showers and thunderstorms likely friday
night. waves 2 feet or less. 
.saturday...west winds 10 knots or less. a chance of showers and
thunderstorms during the day. waves 2 feet or less. 
.sunday...southwest winds 10 knots or less becoming south. waves
1 foot or less. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 250741
glfle 
expires:202506251415;;335951

open lake forecast for lake erie
national weather service cleveland oh
341 am edt wed jun 25 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 30.00 inches persists over lake erie through
friday. a cold front will track through late friday into friday
night. brief high pressure 30.00 inches saturday night into
sunday. 



lez162>164-251415-
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-
341 am edt wed jun 25 2025

.today...north winds 10 knots or less becoming northeast. a
slight chance of showers and thunderstorms this morning, then a
chance of showers and thunderstorms this afternoon. waves 1 foot
or less. 
.tonight...east winds 10 knots or less. a chance of showers and
thunderstorms in the evening, then a slight chance of showers and
thunderstorms after midnight. waves 1 foot or less. 
.thursday...southeast winds 10 knots or less. a chance of showers
and thunderstorms in the afternoon. waves 1 foot or less. 
.thursday night...southeast winds 5 to 10 knots becoming south. a
chance of showers and thunderstorms. waves 1 foot or less. 
.friday...southwest winds around 10 knots becoming west. showers
likely with a chance of thunderstorms during the day, then a
chance of showers and thunderstorms friday night. waves around
1 foot. 
.saturday...west winds 5 to 10 knots becoming south. a chance of
showers and thunderstorms during the day. waves 1 foot or less. 
.sunday...southwest winds 5 to 10 knots becoming south. a chance
of showers and thunderstorms sunday night. waves 1 foot or less. 

winds and waves higher in and near thunderstorms.

$$

fzus63 kdtx 250746
glfsc 
expires:202506251600;;336177

lake st clair forecast
national weather service detroit/pontiac mi
346 am edt wed jun 25 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...the cold front sags south of the state line this
morning with high pressure, 30.20 inches, filling in over lake
superior. periods of showers and thunderstorms are expected to
persist through the end of the week, but outside of this winds
and waves remain below headline criteria.


lcz460-251600-
lake st clair-
346 am edt wed jun 25 2025

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

$$

fzus63 kdtx 250744
glflh 
expires:202506251545;;336106

open lake forecast for lake huron
national weather service detroit/pontiac mi
344 am edt wed jun 25 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...the cold front sags south of the state line this
morning with high pressure, 30.20 inches, filling in over lake
superior. periods of showers and thunderstorms are expected to
persist through the end of the week, but outside of this winds
and waves remain below headline criteria.


lhz361-251545-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
344 am edt wed jun 25 2025

.today...north winds 5 to 10 knots in the morning becoming light
and variable. waves 2 feet or less. 
.tonight...light and variable winds becoming northeast 5 to
10 knots early in the morning. a chance of showers after
midnight. waves 2 feet or less. 
.thursday...east winds 5 to 10 knots increasing to 15 to
20 knots. showers in the morning...then a chance of showers in
the afternoon. waves 1 to 3 feet building to 2 to 4 feet early in
the afternoon. 
.thursday night...east winds 10 to 15 knots increasing to 15 to
20 knots after midnight. showers likely in the evening...then
showers and a chance of thunderstorms after midnight. waves 3 to
5 feet. 
.friday...southeast winds 10 to 15 knots becoming north 5 to
10 knots late in the afternoon. showers and a chance of
thunderstorms in the morning...then showers likely late in the
morning. a chance of showers late in the afternoon. waves 2 to
4 feet subsiding to 1 to 3 feet late in the evening. 
.saturday...northwest winds 5 to 10 knots backing to the west
early in the evening...then becoming light and variable in the
late evening and early morning. waves 2 feet or less. 
.sunday...light and variable winds becoming south 5 to 10 knots
in the late morning and early afternoon...then backing to the
east early in the evening backing to the northeast in the late
evening and early morning. a chance of showers until early
morning. waves 2 feet or less. 


$$

fzus63 kdtx 250744
glflh 
expires:202506251545;;336107

open lake forecast for lake huron
national weather service detroit/pontiac mi
344 am edt wed jun 25 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...the cold front sags south of the state line this
morning with high pressure, 30.20 inches, filling in over lake
superior. periods of showers and thunderstorms are expected to
persist through the end of the week, but outside of this winds
and waves remain below headline criteria.


lhz362-363-251545-
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-
344 am edt wed jun 25 2025

.today...north winds 5 to 10 knots. waves 2 feet or less. 
.tonight...northeast winds 5 to 10 knots. a chance of showers
after midnight. waves 2 feet or less. 
.thursday...east winds 10 to 15 knots. a chance of showers. waves
1 to 3 feet building to 2 to 4 feet in the late morning and
afternoon. 
.thursday night...east winds 10 to 15 knots. a chance of showers
in the evening...then showers likely and a chance of
thunderstorms after midnight. waves 3 to 5 feet. 
.friday...southeast winds 10 to 15 knots becoming northwest 5 to
10 knots late in the evening. showers in the morning. a chance of
thunderstorms. rain showers likely late in the morning. waves
2 to 4 feet subsiding to 1 to 3 feet late in the evening. 
.saturday...northwest winds 5 to 10 knots early in the morning
becoming light and variable. waves 2 feet or less. 
.sunday...light and variable winds becoming southeast 5 to
10 knots. a chance of showers in the late evening and early
morning. waves 2 feet or less. 


$$

fzus63 kdtx 250744
glflh 
expires:202506251545;;336108

open lake forecast for lake huron
national weather service detroit/pontiac mi
344 am edt wed jun 25 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...the cold front sags south of the state line this
morning with high pressure, 30.20 inches, filling in over lake
superior. periods of showers and thunderstorms are expected to
persist through the end of the week, but outside of this winds
and waves remain below headline criteria.


lhz462>464-251545-
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-
344 am edt wed jun 25 2025

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


$$

fzus63 kmkx 250159
glflm 
expires:202506250915;;323469

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
859 pm cdt tue jun 24 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... 

a weak, nearly stationary frontal boundary will linger across the
southern third to southern half of the lake through thursday,
bringing multiple rounds of thunderstorms. isolated thunderstorms
are also possible across the northern half. expect modest 
northeasterly winds north of the frontal boundary, with modest 
southeasterly winds south of the boundary. thursday night, 
expecting the front to lift northward ahead of approaching low 
pressure, bringing south southwest winds to the open waters. as 
low pressure exits to the east, expect a wind shift to westerly on
friday into friday night.


lmz261-362-364-366-563-565-567-868-250915-
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-
859 pm cdt tue jun 24 2025

sheboygan wi to pentwater mi north...

.rest of tonight...north winds 10 to 15 kt becoming northeast
10 to 20 kt. patchy fog. slight chance of showers overnight. 
waves 1 to 3 ft. 
.wednesday...northeast winds 10 to 20 kt diminishing to 10 to
15 kt. slight chance of showers in the morning, then chance of
showers in the afternoon. waves 1 to 3 ft. 
.wednesday night...northeast winds 10 to 15 kt becoming east.
chance of showers in the evening, then showers with a chance of
thunderstorms overnight. waves 1 to 2 ft. 
.thursday...east winds 10 to 20 kt becoming northeast. showers
likely. waves 1 to 3 ft. 
.thursday night...east winds 10 to 20 kt becoming southeast.
showers with a chance of thunderstorms in the evening, then
showers likely with a chance of thunderstorms overnight. waves
2 to 4 ft. 
.friday...southwest winds 10 to 20 kt becoming west. chance of
showers in the morning. waves 1 to 3 ft. 
.friday night...northwest winds 10 to 20 kt becoming north 5 to
10 kt. waves 1 to 3 ft. 
.saturday...northwest winds 5 to 10 kt backing to southwest 10 to
15 kt. waves 1 ft or less. 
.sunday...south winds 10 to 15 kt increasing to 10 to 20 kt.
waves 1 to 2 ft.  

$$

fzus63 kmkx 250159
glflm 
expires:202506250915;;323470

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
859 pm cdt tue jun 24 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... 

a weak, nearly stationary frontal boundary will linger across the
southern third to southern half of the lake through thursday,
bringing multiple rounds of thunderstorms. isolated thunderstorms
are also possible across the northern half. expect modest 
northeasterly winds north of the frontal boundary, with modest 
southeasterly winds south of the boundary. thursday night, 
expecting the front to lift northward ahead of approaching low 
pressure, bringing south southwest winds to the open waters. as 
low pressure exits to the east, expect a wind shift to westerly on
friday into friday night.


lmz080-669-671-673-675-777-779-870-872-874-876-878-250915-
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-
859 pm cdt tue jun 24 2025

sheboygan wi to pentwater mi south...

.rest of tonight...north winds 10 to 15 kt increasing to 10 to
20 kt. patchy fog. chance of showers and thunderstorms through 
early evening, then chance of showers and slight chance of 
thunderstorms overnight. waves 1 to 3 ft. 
.wednesday...north winds 10 to 20 kt diminishing to 10 to 15 kt.
patchy fog in the morning. chance of showers and slight chance of
thunderstorms. waves 1 to 3 ft. 
.wednesday night...northeast winds 10 to 15 kt veering to
southeast 5 to 10 kt. patchy fog. chance of showers and
thunderstorms overnight. waves 1 to 3 ft. 
.thursday...southeast winds 5 to 10 kt becoming east 10 to 15 kt.
chance of showers and thunderstorms. waves 1 to 2 ft.
.thursday night...southeast winds 10 to 15 kt becoming south.
chance of showers and thunderstorms. waves 1 to 3 ft. 
.friday...southwest winds 10 to 20 kt. chance of showers in the
morning, then chance of showers and thunderstorms in the
afternoon. waves 1 to 3 ft. 
.friday night...southwest winds 5 to 10 kt becoming west. waves
1 to 3 ft. 
.saturday...northwest winds 5 to 10 kt backing to south. waves
1 ft or less. 
.sunday...southwest winds 10 to 15 kt becoming south 10 to 20 kt.
chance of showers. waves 1 to 2 ft.  

$$

fzus63 kmqt 250801
glfls 
expires:202506252000;;336842

open lake forecast for lake superior
national weather service marquette mi
401 am edt wed jun 25 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 30.2 inch ridge remains centered over lake superior today, then 
slides to near southern james bay tonight. on thursday, a deepening 
29.8 inch low lifts into the upper mississippi valley, passing near 
the straits of mackinaw on friday. weak 30.0 inch ridging then 
resides over the lake until saturday morning when a 29.6 inch low 
passing through northern ontario brings a 29.8 inch trough over the 
lake on sunday. 29.8 inch troughing remains over the lake through 
tuesday as a deepening low pressure dives southeast over far 
northern ontario early next week.



lsz162-252000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
401 am edt wed jun 25 2025 /301 am cdt wed jun 25 2025/

.early this morning...southeast winds 5 to 15 knots. waves calm
to 2 feet. 
.today...northeast winds 5 to 15 knots. a chance of showers by
mid afternoon. waves calm to 2 feet. 
.tonight...northeast winds 5 to 15 knots increasing to 10 to
20 knots after midnight, then veering east late. a chance of
showers. waves building to 1 to 3 feet. 
.thursday...northeast winds 15 to 25 knots. a chance of showers.
waves building to 2 to 4 feet. 
.thursday night...northeast winds 15 to 25 knots diminishing to
10 to 20 knots after midnight. showers likely through midnight,
then a chance of showers after midnight. waves subsiding to 1 to
3 feet. 
.friday...northeast winds 10 to 20 knots diminishing to 5 to
15 knots by mid afternoon. waves subsiding to calm to 2 feet. 
.friday night...east winds 5 to 15 knots. waves calm to 2 feet. 
.saturday...east winds 5 to 15 knots veering west. a chance of
showers. a chance of thunderstorms. showers likely. waves calm to
2 feet. 
.sunday...southwest winds 5 to 15 knots becoming west 10 to
20 knots. a chance of showers and thunderstorms. waves calm to
2 feet. 

$$

fzus63 kmqt 250801
glfls 
expires:202506252000;;336843

open lake forecast for lake superior
national weather service marquette mi
401 am edt wed jun 25 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 30.2 inch ridge remains centered over lake superior today, then 
slides to near southern james bay tonight. on thursday, a deepening 
29.8 inch low lifts into the upper mississippi valley, passing near 
the straits of mackinaw on friday. weak 30.0 inch ridging then 
resides over the lake until saturday morning when a 29.6 inch low 
passing through northern ontario brings a 29.8 inch trough over the 
lake on sunday. 29.8 inch troughing remains over the lake through 
tuesday as a deepening low pressure dives southeast over far 
northern ontario early next week.



lsz263-252000-
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 wed jun 25 2025

.early this morning...south winds less than 10 knots. waves calm
to 2 feet. 
.today...southwest winds less than 10 knots becoming northeast
5 to 15 knots in the afternoon, then veering east late. a slight
chance of showers by mid afternoon. waves calm to 2 feet. 
.tonight...east winds 5 to 15 knots backing northeast after
midnight, then veering east late. a chance of showers. waves
building to 1 to 3 feet. 
.thursday...northeast winds 5 to 15 knots increasing to 10 to
20 knots in the afternoon. a chance of showers. waves subsiding
to calm to 2 feet, then building to 2 to 4 feet. 
.thursday night...northeast winds 10 to 20 knots diminishing to
5 to 15 knots after midnight. showers likely through midnight,
then a chance of showers after midnight. waves subsiding to 1 to
3 feet. 
.friday...northeast winds 5 to 15 knots. waves subsiding to calm
to 2 feet. 
.friday night...east winds 5 to 15 knots becoming south less than
10 knots after midnight. waves calm to 2 feet. 
.saturday...south winds 5 to 15 knots veering southwest. a chance
of showers. waves calm to 2 feet. 
.sunday...southwest winds 5 to 15 knots veering west. a chance of
showers and thunderstorms. waves calm to 2 feet. 

$$

fzus63 kmqt 250801
glfls 
expires:202506252000;;336844

open lake forecast for lake superior
national weather service marquette mi
401 am edt wed jun 25 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 30.2 inch ridge remains centered over lake superior today, then 
slides to near southern james bay tonight. on thursday, a deepening 
29.8 inch low lifts into the upper mississippi valley, passing near 
the straits of mackinaw on friday. weak 30.0 inch ridging then 
resides over the lake until saturday morning when a 29.6 inch low 
passing through northern ontario brings a 29.8 inch trough over the 
lake on sunday. 29.8 inch troughing remains over the lake through 
tuesday as a deepening low pressure dives southeast over far 
northern ontario early next week.



lsz264-252000-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
401 am edt wed jun 25 2025

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

$$

fzus63 kmqt 250801
glfls 
expires:202506252000;;336845

open lake forecast for lake superior
national weather service marquette mi
401 am edt wed jun 25 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 30.2 inch ridge remains centered over lake superior today, then 
slides to near southern james bay tonight. on thursday, a deepening 
29.8 inch low lifts into the upper mississippi valley, passing near 
the straits of mackinaw on friday. weak 30.0 inch ridging then 
resides over the lake until saturday morning when a 29.6 inch low 
passing through northern ontario brings a 29.8 inch trough over the 
lake on sunday. 29.8 inch troughing remains over the lake through 
tuesday as a deepening low pressure dives southeast over far 
northern ontario early next week.



lsz265-252000-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
401 am edt wed jun 25 2025

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

$$

fzus63 kmqt 250801
glfls 
expires:202506252000;;336846

open lake forecast for lake superior
national weather service marquette mi
401 am edt wed jun 25 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 30.2 inch ridge remains centered over lake superior today, then 
slides to near southern james bay tonight. on thursday, a deepening 
29.8 inch low lifts into the upper mississippi valley, passing near 
the straits of mackinaw on friday. weak 30.0 inch ridging then 
resides over the lake until saturday morning when a 29.6 inch low 
passing through northern ontario brings a 29.8 inch trough over the 
lake on sunday. 29.8 inch troughing remains over the lake through 
tuesday as a deepening low pressure dives southeast over far 
northern ontario early next week.



lsz266-252000-
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 wed jun 25 2025

.early this morning...northwest winds 5 to 15 knots. waves calm
to 2 feet. 
.today...south winds 5 to 15 knots backing east late. waves calm
to 2 feet. 
.tonight...east winds 5 to 15 knots increasing to 10 to 20 knots
late. a chance of showers. waves calm to 2 feet. 
.thursday...east winds 10 to 20 knots. a chance of showers. waves
calm to 2 feet. 
.thursday night...east winds 10 to 20 knots. showers. a slight
chance of thunderstorms after midnight. waves building to 2 to
4 feet. 
.friday...northeast winds 10 to 20 knots backing north by mid
afternoon. a chance of showers. waves subsiding to calm to
2 feet. 
.friday night...north winds 5 to 15 knots backing northwest after
midnight. waves calm to 2 feet. 
.saturday...southeast winds 5 to 15 knots becoming south 10 to
20 knots. a chance of showers. waves calm to 2 feet. 
.sunday...southwest winds 10 to 20 knots diminishing to 5 to
15 knots. a chance of showers. waves calm to 2 feet. 

$$

fzus63 kmqt 250801
glfls 
expires:202506252000;;336847

open lake forecast for lake superior
national weather service marquette mi
401 am edt wed jun 25 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 30.2 inch ridge remains centered over lake superior today, then 
slides to near southern james bay tonight. on thursday, a deepening 
29.8 inch low lifts into the upper mississippi valley, passing near 
the straits of mackinaw on friday. weak 30.0 inch ridging then 
resides over the lake until saturday morning when a 29.6 inch low 
passing through northern ontario brings a 29.8 inch trough over the 
lake on sunday. 29.8 inch troughing remains over the lake through 
tuesday as a deepening low pressure dives southeast over far 
northern ontario early next week.



lsz267-252000-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
401 am edt wed jun 25 2025

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

$$