fzus61 kbuf 011402
glflo 
expires:202609012100;;721549

open lake forecast for lake ontario
national weather service buffalo ny
1002 am edt tue sep 1 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 frontal boundary will remain stalled near the lake 
through this evening before moving northeast across the lake as a 
warm front late tonight through wednesday morning. the front will 
then settle back south across the lake thursday. a 30.1 inch high 
over northwest ontario province friday will settle south into the 
lower great lakes saturday through sunday.


loz062-012100-
lake ontario open waters from the niagara river to hamlin beach-
1002 am edt tue sep 1 2026

.rest of today...southwest winds 10 knots or less becoming north.
waves 1 foot or less. 
.tonight...light and variable winds becoming southeast 5 to
10 knots. patchy fog late. a chance of showers and thunderstorms
late. waves 1 foot or less. 
.wednesday...southeast winds 5 to 10 knots becoming southwest. a
chance of showers and thunderstorms in the morning, then showers
with thunderstorms likely in the afternoon. waves 1 foot or less.
.wednesday night...southwest winds 5 to 10 knots becoming west.
showers with thunderstorms likely. waves 1 foot or less. 
.thursday...west winds 5 to 10 knots becoming northwest. showers
with a chance of thunderstorms during the day. waves 1 foot or
less. 
.friday...northwest winds 10 knots or less becoming north. 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 011402
glflo 
expires:202609012100;;721550

open lake forecast for lake ontario
national weather service buffalo ny
1002 am edt tue sep 1 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 frontal boundary will remain stalled near the lake 
through this evening before moving northeast across the lake as a 
warm front late tonight through wednesday morning. the front will 
then settle back south across the lake thursday. a 30.1 inch high 
over northwest ontario province friday will settle south into the 
lower great lakes saturday through sunday.


loz063>065-012100-
lake ontario open waters from hamlin beach to the saint lawrence
river-
1002 am edt tue sep 1 2026

.rest of today...southeast winds 10 knots or less becoming
northeast. a chance of showers late this morning. waves 1 foot or
less. 
.tonight...light and variable winds becoming south 5 to 10 knots.
patchy fog after midnight. waves 1 foot or less. 
.wednesday...southeast winds 5 to 15 knots becoming south. a
chance of showers and thunderstorms in the morning, then showers
with thunderstorms likely in the afternoon. waves 2 feet or less.
.wednesday night...south winds 10 to 15 knots becoming southwest.
showers with thunderstorms likely. waves 2 feet or less. 
.thursday...west winds 5 to 10 knots becoming northwest. showers
likely during the day. waves 1 to 2 feet. 
.friday...northwest winds 5 to 10 knots becoming north. waves
1 foot or less. 
.saturday...north winds 5 to 10 knots becoming northeast. waves
2 feet or less. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 011959
glfle 
expires:202609020215;;736311

open lake forecast for lake erie
national weather service cleveland oh
359 pm edt tue sep 1 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 stationary front will linger in the vicinity of lake erie
tonight as high pressure of 30.10 inches remains entrenched across
the ohio valley. low pressure 29.70 inches will move east across 
the upper great lakes on wednesday, extending a cold front through
the area on thursday. this front will linger south of lake erie 
on friday as high pressure ridge 30.10 inches build in from the 
north for the weekend.


lez164>166-020215-
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-
359 pm edt tue sep 1 2026

.tonight...southwest winds 5 to 10 knots. a chance of showers and
thunderstorms late. waves 2 feet or less. 
.wednesday...southwest winds 5 to 10 knots. a chance of showers
and thunderstorms early. waves 1 to 2 feet. 
.wednesday night...southwest winds 10 to 15 knots. a chance of
showers and thunderstorms. waves 1 to 3 feet. 
.thursday...southwest winds 5 to 15 knots becoming west. a chance
of thunderstorms in the morning, then a chance of showers and
thunderstorms in the afternoon. waves 1 to 3 feet. 
.thursday night...west winds 5 to 10 knots becoming northeast. a
chance of showers and thunderstorms in the evening, then showers
likely overnight. waves 1 foot or less. 
.friday...north winds 10 knots or less becoming northeast. a
chance of showers and thunderstorms during the day, then a chance
of showers friday night. waves 1 foot or less. 
.saturday...northeast winds 5 to 10 knots becoming east. waves
1 to 2 feet. 
.sunday...east winds 5 to 10 knots becoming southeast. waves
1 foot or less. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 011959
glfle 
expires:202609020215;;736312

open lake forecast for lake erie
national weather service cleveland oh
359 pm edt tue sep 1 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 stationary front will linger in the vicinity of lake erie
tonight as high pressure of 30.10 inches remains entrenched across
the ohio valley. low pressure 29.70 inches will move east across 
the upper great lakes on wednesday, extending a cold front through
the area on thursday. this front will linger south of lake erie 
on friday as high pressure ridge 30.10 inches build in from the 
north for the weekend.


lez061-167>169-020215-
ripley to buffalo ny extending from 5nm off shoreline to us-
canadian border-willowick to geneva-on-the-
lake oh beyond 5nm off shoreline to us-canadian border-geneva-on-
the-lake to conneaut oh beyond 5 nm off shoreline to us-
canadian border-
conneaut oh to ripley ny beyond 5 nm off shoreline to us-
canadian border-
359 pm edt tue sep 1 2026

.tonight...southwest winds 5 to 10 knots. a chance of showers and
thunderstorms late. waves 1 to 2 feet. 
.wednesday...southwest winds 5 to 10 knots. a chance of showers
and thunderstorms early, then a chance of showers with a slight
chance of thunderstorms late in the morning. a slight chance of
showers and thunderstorms late. waves 1 to 2 feet. 
.wednesday night...southwest winds 10 to 15 knots. a chance of
showers and thunderstorms. waves 1 to 3 feet. 
.thursday...southwest winds 5 to 15 knots becoming west. a chance
of showers and thunderstorms in the morning, then a chance of
showers in the afternoon. waves 1 to 3 feet. 
.thursday night...west winds 10 knots or less becoming northwest.
showers likely with a chance of thunderstorms in the evening,
then showers likely overnight. waves 1 to 2 feet. 
.friday...north winds 10 knots or less becoming northeast. a
chance of showers during the day. waves 1 foot or less. 
.saturday...northeast winds 5 to 10 knots becoming east. waves
2 feet or less. 
.sunday...east winds 5 to 10 knots becoming southeast. waves
1 foot or less. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 011959
glfle 
expires:202609020215;;736310

open lake forecast for lake erie
national weather service cleveland oh
359 pm edt tue sep 1 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 stationary front will linger in the vicinity of lake erie
tonight as high pressure of 30.10 inches remains entrenched across
the ohio valley. low pressure 29.70 inches will move east across 
the upper great lakes on wednesday, extending a cold front through
the area on thursday. this front will linger south of lake erie 
on friday as high pressure ridge 30.10 inches build in from the 
north for the weekend.


lez162-163-020215-
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-
359 pm edt tue sep 1 2026

.tonight...southwest winds 5 to 10 knots. a slight chance of
showers and thunderstorms early, then a slight chance of showers
late this evening. waves 1 foot or less. 
.wednesday...southwest winds 5 to 10 knots. waves 1 foot or less.
.wednesday night...southwest winds 10 to 15 knots. a chance of
showers and thunderstorms overnight. waves 1 to 2 feet. 
.thursday...southwest winds 5 to 10 knots becoming west. a chance
of showers and thunderstorms. waves 2 feet or less. 
.thursday night...west winds 5 to 10 knots becoming northeast. a
chance of showers and thunderstorms in the evening, then showers
likely overnight. waves 1 foot or less. 
.friday...west winds 10 knots or less becoming northeast. a
chance of showers and thunderstorms. waves 1 foot or less. 
.saturday...northeast winds 5 to 10 knots becoming east. waves
1 foot or less. 
.sunday...east winds 5 to 10 knots becoming southeast. waves
1 foot or less. 

winds and waves higher in and near thunderstorms.

$$

fzus63 kdtx 011946
glfsc 
expires:202609020400;;736078

lake st clair forecast
national weather service detroit/pontiac mi
346 pm edt tue sep 1 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...low pressure now over southern manitoba slowly tracks
across northern ontario through the midweek. its cold front is
likely to stall across the area on wednesday.


lcz460-020400-
lake st clair-
346 pm edt tue sep 1 2026

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

$$

fzus63 kdtx 011945
glflh 
expires:202609020345;;736076

open lake forecast for lake huron
national weather service detroit/pontiac mi
345 pm edt tue sep 1 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...low pressure now over southern manitoba slowly tracks
across northern ontario through the midweek. its cold front is
likely to stall across the area on wednesday.


lhz462>464-020345-
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-
345 pm edt tue sep 1 2026

.tonight...northeast winds 5 to 10 knots veering to the south
after midnight. areas of dense fog in the evening. a chance of
showers and thunderstorms. waves 2 feet or less. 
.wednesday...southwest winds 5 to 10 knots backing to the
southeast late in the afternoon. a chance of waterspouts in the
morning. a chance of showers and thunderstorms in the morning...
then showers likely and a chance of thunderstorms in the
afternoon. waves 2 feet or less. 
.wednesday night...north winds 5 to 10 knots. showers likely and
a chance of thunderstorms in the evening...then a chance of
showers after midnight. waves 2 feet or less. 
.thursday...light and variable winds becoming north 5 to 10 knots
early in the afternoon. a chance of showers in the afternoon.
waves 2 feet or less. 
.thursday night...light and variable winds. a chance of showers
in the evening. waves 2 feet or less. 
.friday...light and variable winds becoming north 5 to 10 knots
late in the afternoon. waves 2 feet or less. 
.saturday...northeast winds 5 to 10 knots. waves 2 feet or less. 
.sunday...east winds 5 to 10 knots. waves 2 feet or less. 


$$

fzus63 kdtx 011945
glflh 
expires:202609020345;;736074

open lake forecast for lake huron
national weather service detroit/pontiac mi
345 pm edt tue sep 1 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...low pressure now over southern manitoba slowly tracks
across northern ontario through the midweek. its cold front is
likely to stall across the area on wednesday.


lhz361-020345-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
345 pm edt tue sep 1 2026

.tonight...southeast winds 5 to 10 knots in the evening becoming
light and variable. a chance of showers and thunderstorms.
widespread dense fog. waves 2 feet or less. 
.wednesday...light and variable winds. widespread dense fog in
the morning. a chance of showers and thunderstorms. waves 2 feet
or less. 
.wednesday night...light and variable winds. waves 2 feet or
less. 
.thursday...northwest winds 5 to 10 knots early in the morning
becoming light and variable. waves 2 feet or less. 
.thursday night...light and variable winds. waves 2 feet or less.
.friday...light and variable winds. waves 2 feet or less. 
.saturday...east winds 5 to 10 knots early in the morning
becoming light and variable. waves 2 feet or less. 
.sunday...light and variable winds becoming south 5 to 10 knots.
a chance of. waves 2 feet or less. 


$$

fzus63 kdtx 011945
glflh 
expires:202609020345;;736075

open lake forecast for lake huron
national weather service detroit/pontiac mi
345 pm edt tue sep 1 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...low pressure now over southern manitoba slowly tracks
across northern ontario through the midweek. its cold front is
likely to stall across the area on wednesday.


lhz362-363-020345-
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-
345 pm edt tue sep 1 2026

.tonight...southeast winds 5 to 10 knots veering to the south
early in the morning. a chance of showers and thunderstorms.
areas of dense fog in the evening. widespread dense fog after
midnight. waves 2 feet or less. 
.wednesday...southwest winds 5 to 10 knots backing to the east
late in the afternoon. widespread dense fog in the morning. a
chance of showers and thunderstorms in the morning...then a
chance of thunderstorms in the afternoon. waves 2 feet or less. 
.wednesday night...light and variable winds. a chance of showers
and thunderstorms in the evening...then a chance of showers after
midnight. waves 2 feet or less. 
.thursday...light and variable winds becoming north 5 to 10 knots
in the late morning and early afternoon...then becoming light and
variable early in the afternoon. a chance of showers in the
morning. waves 2 feet or less. 
.thursday night...light and variable winds. waves 2 feet or less.
.friday...light and variable winds. waves 2 feet or less. 
.saturday...northeast 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. waves 2 feet or less. 


$$

fzus63 kmkx 011942
glflm 
expires:202609020315;;735922

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
242 pm cdt tue sep 1 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...

light winds, combined with a lingering humid air mass, will 
support areas of fog development across lake michigan through 
tonight. off and on thunderstorms remain possible through 
wednesday as a cold front lingers just to the north of the open 
waters. widespread severe weather isn't expected in any 
thunderstorm activity, though an isolated stronger cell with hail 
and gusty winds can't be entirely ruled out. 

light to modest southerly winds today will shift east- 
northeasterly through the second half of the week as 30.1 inch 
high pressure builds over the hudson bay and broad, 29.6 inch low 
pressure moves into the northern great plains. an unsettled 
pattern featuring multiple additional thunderstorm chances will 
continue through at least friday night. similar to earlier week 
storms, widespread severe weather isn't anticipated, though 
isolated stronger storms with hail and gusty winds are possible.


lmz080-669-671-673-675-777-779-870-872-874-876-878-020315-
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-
242 pm cdt tue sep 1 2026

sheboygan wi to pentwater mi south...

.tonight...south winds 10 to 15 kt becoming southwest. chance of
showers and slight chance of thunderstorms this evening, then
chance of showers and thunderstorms overnight. patchy fog
overnight. waves 1 to 2 ft. 
.wednesday...southwest winds 10 to 15 kt becoming west. waves
1 to 2 ft. 
.wednesday night...southwest winds 10 to 15 kt backing to
northeast. chance of showers in the evening, then chance of
showers and thunderstorms overnight. waves 1 to 3 ft. 
.thursday...west winds 5 to 10 kt veering to northeast. chance of
showers. waves 1 to 2 ft. 
.thursday night...east winds 5 to 10 kt. showers likely
overnight. waves 1 to 2 ft. 
.friday...east winds 5 to 10 kt becoming southeast. chance of
showers. waves 1 to 2 ft. 
.friday night...northeast winds 5 to 10 kt becoming east 10 to
15 kt. chance of showers and thunderstorms. waves 1 to 2 ft.
.saturday...east winds 10 to 15 kt becoming northeast 5 to 10 kt.
waves 1 to 2 ft. 
.sunday...southeast winds 10 to 15 kt. waves 1 to 3 ft.  

$$

fzus63 kmkx 011942
glflm 
expires:202609020315;;735921

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
242 pm cdt tue sep 1 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...

light winds, combined with a lingering humid air mass, will 
support areas of fog development across lake michigan through 
tonight. off and on thunderstorms remain possible through 
wednesday as a cold front lingers just to the north of the open 
waters. widespread severe weather isn't expected in any 
thunderstorm activity, though an isolated stronger cell with hail 
and gusty winds can't be entirely ruled out. 

light to modest southerly winds today will shift east- 
northeasterly through the second half of the week as 30.1 inch 
high pressure builds over the hudson bay and broad, 29.6 inch low 
pressure moves into the northern great plains. an unsettled 
pattern featuring multiple additional thunderstorm chances will 
continue through at least friday night. similar to earlier week 
storms, widespread severe weather isn't anticipated, though 
isolated stronger storms with hail and gusty winds are possible.


lmz261-362-364-366-563-565-567-868-020315-
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-
242 pm cdt tue sep 1 2026

sheboygan wi to pentwater mi north...

.tonight...south winds 10 to 20 kt becoming southwest late this
evening, then diminishing to 10 to 15 kt after midnight becoming
west late. patchy fog. slight chance of showers and thunderstorms
overnight. waves 1 to 2 ft. 
.wednesday...northwest winds 5 to 10 kt becoming northeast.
patchy fog in the morning. chance of showers and slight chance of
thunderstorms in the morning, then slight chance of showers in
the afternoon. waves 1 ft or less. 
.wednesday night...northeast winds 5 to 10 kt diminishing to less
than 10 kt. chance of showers overnight. waves 1 ft or less. 
.thursday...northeast winds 5 to 10 kt. chance of showers. waves
1 ft or less. 
.thursday night...northeast winds 5 to 10 kt becoming east.
chance of showers. waves nearly calm. 
.friday...east winds 5 to 10 kt increasing to 10 to 15 kt. chance
of showers in the morning. waves 1 ft or less. 
.friday night...northeast winds 10 to 15 kt becoming east 5 to
10 kt. chance of showers. waves 1 ft or less. 
.saturday...east winds 10 to 15 kt becoming northeast. waves 1 to
2 ft. 
.sunday...south winds 10 to 15 kt becoming southwest. waves 1 to
3 ft.  

$$

fzus63 kmkx 011357
glflm 
expires:202609012115;;721239

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
857 am cdt tue sep 1 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...

light winds, combined with a lingering humid air mass, will 
support areas of fog development across lake michigan through 
tonight. off and on thunderstorms remain forecast through 
wednesday morning as a cold front lingers just to the north of the
open waters. widespread severe weather isn't expected in any 
thunderstorm activity, though an isolated stronger cell with hail 
and gusty winds can't be entirely ruled out. 

light to modest southerly winds today will shift east- 
northeasterly through the second half of the week as 30.1 inch 
high pressure builds over the hudson bay and broad, 29.6 inch low 
pressure moves into the northern great plains. an unsettled 
pattern featuring multiple additional thunderstorm chances will 
continue through at least friday night. similar to earlier week 
storms, widespread severe weather isn't anticipated, though 
isolated stronger storms with hail and gusty winds are possible.


lmz261-362-012115-
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-
857 am cdt tue sep 1 2026

rock island passage to charlevoix mi north...

...dense fog advisory in effect until 1 pm cdt this afternoon...

.rest of today...east winds less than 10 kt veering to southwest.
patchy dense fog through mid morning, then patchy fog this
afternoon. waves 1 to 2 ft. 
.tonight...south winds 10 to 15 kt becoming west after midnight,
then becoming less than 10 kt late. patchy dense fog in the
evening, then patchy fog overnight. slight chance of showers.
waves 1 to 2 ft. 
.wednesday...west winds 5 to 10 kt increasing to 10 to 15 kt.
patchy fog in the morning. chance of showers. waves 1 ft or less.
.wednesday night...north winds 5 to 10 kt. waves 1 ft or less. 
.thursday...north winds 5 to 10 kt becoming northwest. waves
nearly calm. 
.thursday night...north winds 5 to 10 kt becoming northeast.
waves nearly calm. 
.friday...northeast winds 5 to 10 kt becoming east 10 to 15 kt.
waves 1 ft or less. 
.saturday...east winds 10 to 15 kt. waves 1 ft or less.  

$$

fzus63 kmkx 011357
glflm 
expires:202609012115;;721240

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
857 am cdt tue sep 1 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...

light winds, combined with a lingering humid air mass, will 
support areas of fog development across lake michigan through 
tonight. off and on thunderstorms remain forecast through 
wednesday morning as a cold front lingers just to the north of the
open waters. widespread severe weather isn't expected in any 
thunderstorm activity, though an isolated stronger cell with hail 
and gusty winds can't be entirely ruled out. 

light to modest southerly winds today will shift east- 
northeasterly through the second half of the week as 30.1 inch 
high pressure builds over the hudson bay and broad, 29.6 inch low 
pressure moves into the northern great plains. an unsettled 
pattern featuring multiple additional thunderstorm chances will 
continue through at least friday night. similar to earlier week 
storms, widespread severe weather isn't anticipated, though 
isolated stronger storms with hail and gusty winds are possible.


lmz364-366-563-565-567-868-012115-
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-
857 am cdt tue sep 1 2026

rock island passage to charlevoix mi south to sheboygan wi to
pentwater mi...

.rest of today...southeast winds less than 10 kt becoming south
late this morning, then becoming southwest early this afternoon
becoming south 10 to 15 kt late. patchy fog. waves 1 to 2 ft. 
.tonight...south winds 10 to 15 kt becoming southwest 10 to 20 kt
late in the evening, then diminishing to 10 to 15 kt after
midnight becoming west late. patchy fog. slight chance of showers
and thunderstorms overnight. waves 1 to 2 ft. 
.wednesday...northwest winds 5 to 10 kt veering to northeast
10 to 15 kt. chance of showers. waves 1 ft or less. 
.wednesday night...northeast winds 5 to 10 kt. waves 1 ft or
less. 
.thursday...northeast winds 5 to 10 kt increasing to 10 to 15 kt.
waves 1 ft or less. 
.thursday night...northeast winds 10 to 15 kt becoming east 5 to
10 kt. chance of showers and thunderstorms. waves nearly calm. 
.friday...east winds 5 to 10 kt becoming northeast 10 to 15 kt.
chance of showers and thunderstorms. waves 1 ft or less. 
.saturday...east winds 10 to 15 kt becoming northeast. waves 1 to
2 ft.  

$$

fzus63 kmqt 012001
glfls 
expires:202609020800;;736438

open lake forecast for lake superior
national weather service marquette mi
401 pm edt tue sep 1 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 29.7 inch low will continue to slowly move east over ontario 
through wednesday, weakening to 29.8 inches as it reaches james bay. 
this will bring broad 29.9 inch troughing over the upper great lakes 
wednesday morning. a 29.9 inch ridge will move into the area 
wednesday evening and build to 30.0 inches through friday. ridging 
will give way to another weak trough on saturday night with ridging 
of 30.1 inches building back in for sunday.




lsz162-020800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
401 pm edt tue sep 1 2026 /301 pm cdt tue sep 1 2026/

.late this afternoon...southwest winds 15 to 25 knots. waves 1 to
3 feet. 
.tonight...west winds 10 to 20 knots becoming northwest 5 to
15 knots after midnight, then backing west late. waves subsiding
to calm to 2 feet. 
.wednesday...northwest winds 5 to 15 knots becoming southwest
less than 10 knots in the afternoon, then becoming south 5 to
15 knots late. waves calm to 2 feet. 
.wednesday night...east winds less than 10 knots becoming
northeast 5 to 15 knots after midnight. waves calm to 2 feet. 
.thursday...northeast winds 10 to 20 knots increasing to 15 to
25 knots by mid afternoon. waves building to 1 to 3 feet. 
.thursday night...northeast winds 15 to 25 knots diminishing to
10 to 20 knots after midnight. a chance of showers. waves
subsiding to calm to 2 feet. 
.friday...east winds 15 to 25 knots backing northeast by mid
afternoon. a chance of showers through early afternoon. waves
building to 1 to 3 feet. 
.friday night...northeast winds 15 to 25 knots diminishing to
5 to 15 knots after midnight. waves subsiding to calm to 2 feet. 
.saturday...northeast winds 10 to 20 knots diminishing to 5 to
15 knots. a chance of showers. waves calm to 2 feet. 
.sunday...west winds 5 to 15 knots becoming northeast 10 to
20 knots. waves building to 1 to 3 feet. 

$$

fzus63 kmqt 012001
glfls 
expires:202609020800;;736439

open lake forecast for lake superior
national weather service marquette mi
401 pm edt tue sep 1 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 29.7 inch low will continue to slowly move east over ontario 
through wednesday, weakening to 29.8 inches as it reaches james bay. 
this will bring broad 29.9 inch troughing over the upper great lakes 
wednesday morning. a 29.9 inch ridge will move into the area 
wednesday evening and build to 30.0 inches through friday. ridging 
will give way to another weak trough on saturday night with ridging 
of 30.1 inches building back in for sunday.




lsz263-020800-
lake superior from saxon harbor wi to upper entrance to portage
canal mi 5nm off shore to the us/canadian border including isle
royale national park-
401 pm edt tue sep 1 2026

.late this afternoon...west winds 15 to 25 knots. waves 2 to
4 feet. 
.tonight...west winds 10 to 20 knots diminishing to 5 to 15 knots
after midnight. waves subsiding to calm to 2 feet. 
.wednesday...northwest winds 5 to 15 knots backing southwest
late. waves calm to 2 feet. 
.wednesday night...east winds 5 to 15 knots diminishing to less
than 10 knots after midnight. waves calm to 2 feet. 
.thursday...northeast winds 5 to 15 knots becoming east 15 to
25 knots by mid afternoon. waves calm to 2 feet. 
.thursday night...east winds 15 to 25 knots diminishing to 5 to
15 knots after midnight. a chance of showers. waves calm to
2 feet. 
.friday...east winds 10 to 20 knots increasing to 15 to 25 knots
by mid afternoon. waves building to 1 to 3 feet. 
.friday night...east winds 10 to 20 knots diminishing to 5 to
15 knots after midnight. waves subsiding to calm to 2 feet. 
.saturday...east winds 5 to 15 knots veering west. a chance of
showers. waves calm to 2 feet. 
.sunday...west winds 5 to 15 knots becoming northeast 10 to
20 knots. a chance of showers. waves building to 1 to 3 feet. 

$$

fzus63 kmqt 012001
glfls 
expires:202609020800;;736440

open lake forecast for lake superior
national weather service marquette mi
401 pm edt tue sep 1 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 29.7 inch low will continue to slowly move east over ontario 
through wednesday, weakening to 29.8 inches as it reaches james bay. 
this will bring broad 29.9 inch troughing over the upper great lakes 
wednesday morning. a 29.9 inch ridge will move into the area 
wednesday evening and build to 30.0 inches through friday. ridging 
will give way to another weak trough on saturday night with ridging 
of 30.1 inches building back in for sunday.




lsz264-020800-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
401 pm edt tue sep 1 2026

.late this afternoon...southwest winds 15 to 25 knots. waves 1 to
3 feet. 
.tonight...west winds 10 to 20 knots diminishing to 5 to 15 knots
after midnight. waves subsiding to calm to 2 feet. 
.wednesday...northwest winds 5 to 15 knots diminishing to less
than 10 knots in the afternoon, then backing southwest late.
waves calm to 2 feet. 
.wednesday night...west winds less than 10 knots veering north
late. waves calm to 2 feet. 
.thursday...northeast winds less than 10 knots becoming east 5 to
15 knots by mid afternoon. waves calm to 2 feet. 
.thursday night...east 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. waves calm to 2 feet. 
.friday night...east winds 10 to 20 knots diminishing to 5 to
15 knots after midnight. waves calm to 2 feet. 
.saturday...east winds 5 to 15 knots veering southwest. waves
calm to 2 feet. 
.sunday...west winds 5 to 15 knots becoming northeast 10 to
20 knots. a chance of showers. waves building to 1 to 3 feet. 

$$

fzus63 kmqt 012001
glfls 
expires:202609020800;;736441

open lake forecast for lake superior
national weather service marquette mi
401 pm edt tue sep 1 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 29.7 inch low will continue to slowly move east over ontario 
through wednesday, weakening to 29.8 inches as it reaches james bay. 
this will bring broad 29.9 inch troughing over the upper great lakes 
wednesday morning. a 29.9 inch ridge will move into the area 
wednesday evening and build to 30.0 inches through friday. ridging 
will give way to another weak trough on saturday night with ridging 
of 30.1 inches building back in for sunday.




lsz265-020800-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
401 pm edt tue sep 1 2026

.late this afternoon...west winds 10 to 20 knots. waves calm to
2 feet. 
.tonight...southwest winds 10 to 20 knots veering west after
midnight. waves calm to 2 feet. 
.wednesday...west winds 10 to 20 knots diminishing to 5 to
15 knots in the afternoon, then veering north late. waves calm to
2 feet. 
.wednesday night...east winds 5 to 15 knots becoming west less
than 10 knots after midnight, then becoming northwest 5 to
15 knots late. waves calm to 2 feet. 
.thursday...east winds 5 to 15 knots. waves calm to 2 feet. 
.thursday night...east winds 5 to 15 knots. waves calm to 2 feet.
.friday...east winds 10 to 20 knots increasing to 15 to 25 knots
by mid afternoon. waves calm to 2 feet. 
.friday night...east winds 10 to 20 knots diminishing to 5 to
15 knots after midnight. waves calm to 2 feet. 
.saturday...east winds 5 to 15 knots becoming south 10 to
20 knots. waves calm to 2 feet. 
.sunday...west winds 10 to 20 knots becoming northeast 15 to
25 knots. a chance of showers. waves building to 2 to 4 feet. 

$$

fzus63 kmqt 012001
glfls 
expires:202609020800;;736442

open lake forecast for lake superior
national weather service marquette mi
401 pm edt tue sep 1 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 29.7 inch low will continue to slowly move east over ontario 
through wednesday, weakening to 29.8 inches as it reaches james bay. 
this will bring broad 29.9 inch troughing over the upper great lakes 
wednesday morning. a 29.9 inch ridge will move into the area 
wednesday evening and build to 30.0 inches through friday. ridging 
will give way to another weak trough on saturday night with ridging 
of 30.1 inches building back in for sunday.




lsz266-020800-
lake superior east of a line from manitou island to marquette mi
and west of a line from grand marais mi to the us/canadian border
beyond 5nm from shore-
401 pm edt tue sep 1 2026

.late this afternoon...south winds 5 to 15 knots. waves 1 to
3 feet. 
.tonight...southwest winds 5 to 15 knots veering west after
midnight, then increasing to 10 to 20 knots late. waves subsiding
to calm to 2 feet. 
.wednesday...west winds 5 to 15 knots veering northwest in the
afternoon. waves calm to 2 feet. 
.wednesday night...northwest winds 5 to 15 knots veering north
late. waves calm to 2 feet. 
.thursday...north winds 5 to 15 knots veering northeast by mid
afternoon. waves calm to 2 feet. 
.thursday night...east winds 5 to 15 knots. waves calm to 2 feet.
.friday...east winds 5 to 15 knots. waves calm to 2 feet. 
.friday night...east winds 5 to 15 knots. waves calm to 2 feet. 
.saturday...east winds 5 to 15 knots becoming south 10 to
20 knots. waves calm to 2 feet. 
.sunday...southwest winds 10 to 20 knots becoming north 15 to
25 knots. waves building to 2 to 4 feet. 

$$

fzus63 kmqt 012001
glfls 
expires:202609020800;;736443

open lake forecast for lake superior
national weather service marquette mi
401 pm edt tue sep 1 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 29.7 inch low will continue to slowly move east over ontario 
through wednesday, weakening to 29.8 inches as it reaches james bay. 
this will bring broad 29.9 inch troughing over the upper great lakes 
wednesday morning. a 29.9 inch ridge will move into the area 
wednesday evening and build to 30.0 inches through friday. ridging 
will give way to another weak trough on saturday night with ridging 
of 30.1 inches building back in for sunday.




lsz267-020800-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
401 pm edt tue sep 1 2026

.late this afternoon...southeast winds 5 to 15 knots. a slight
chance of showers. waves calm to 2 feet. 
.tonight...southwest winds 5 to 15 knots veering west late. waves
calm to 2 feet. 
.wednesday...west winds 5 to 15 knots veering northwest late.
waves calm to 2 feet. 
.wednesday night...northwest winds 5 to 15 knots. waves calm to
2 feet. 
.thursday...northwest winds 5 to 15 knots. waves calm to 2 feet. 
.thursday night...north winds 5 to 15 knots veering northeast
after midnight. waves calm to 2 feet. 
.friday...east winds 5 to 15 knots backing northeast by mid
afternoon. waves calm to 2 feet. 
.friday night...northeast winds 5 to 15 knots veering east after
midnight. waves calm to 2 feet. 
.saturday...east winds 5 to 15 knots veering south. waves calm to
2 feet. 
.sunday...south winds 10 to 20 knots backing north. waves
building to 2 to 4 feet. 

$$