fzus61 kbuf 150746
glflo 
expires:202609151530;;479735

open lake forecast for lake ontario
national weather service buffalo ny
issued by national weather service cleveland oh
346 am edt tue sep 15 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 30.3 inch high will depart the eastern great lakes 
today as a warm front lifts north of the lake. a weakening cold 
front will cross the lake tonight into wednesday and settle south 
of the lake. a weak 30.1 inch low will move across the front and 
south of the lake on thursday. a 30.4 inch high will build from 
the northwest starting on thursday night through saturday.


loz062-151530-
lake ontario open waters from the niagara river to hamlin beach-
346 am edt tue sep 15 2026

.today...south winds 5 to 15 knots. waves 2 feet or less. 
.tonight...south winds 5 to 15 knots becoming southwest. showers
likely after midnight. waves 2 feet or less. 
.wednesday...west winds around 10 knots becoming light and
variable. a chance of showers in the morning. waves 2 feet or
less. 
.wednesday night...northwest winds 10 knots or less becoming
northeast. waves 1 foot or less. 
.thursday...northeast winds 10 knots or less becoming northwest.
a chance of showers during the day. waves 2 feet or less. 
.friday...north winds 5 to 15 knots becoming east 15 to 20 knots.
waves 1 to 3 feet. 
.saturday...east winds 10 to 15 knots becoming southwest 15 to
20 knots. a chance of showers during the day, then showers with a
chance of thunderstorms saturday night. waves 2 to 4 feet
building to 3 to 5 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kbuf 150746
glflo 
expires:202609151530;;479736

open lake forecast for lake ontario
national weather service buffalo ny
issued by national weather service cleveland oh
346 am edt tue sep 15 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 30.3 inch high will depart the eastern great lakes 
today as a warm front lifts north of the lake. a weakening cold 
front will cross the lake tonight into wednesday and settle south 
of the lake. a weak 30.1 inch low will move across the front and 
south of the lake on thursday. a 30.4 inch high will build from 
the northwest starting on thursday night through saturday.


loz063>065-151530-
lake ontario open waters from hamlin beach to the saint lawrence
river-
346 am edt tue sep 15 2026

.today...south winds 15 to 20 knots. waves 1 to 3 feet building
to 3 to 5 feet. 
.tonight...south winds 15 to 25 knots. a chance of showers after
midnight. waves 3 to 6 feet. 
.wednesday...southwest winds 15 to 20 knots becoming west and
diminishing to less than 10 knots in the afternoon. a chance of
showers in the morning. waves 1 to 3 feet subsiding to 1 foot or
less. 
.wednesday night...west winds 10 knots or less becoming east.
waves 1 foot or less. 
.thursday...east winds 10 knots or less becoming northwest 10 to
15 knots. a chance of showers. waves 2 feet or less. 
.friday...north winds 10 to 15 knots becoming east. waves 1 to
3 feet. 
.saturday...east winds 10 to 15 knots becoming south and
increasing to 15 to 25 knots. a chance of showers during the day,
then showers saturday night. waves 1 to 3 feet building to 3 to
5 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 150743
glfle 
expires:202609151415;;479727

open lake forecast for lake erie
national weather service cleveland oh
343 am edt tue sep 15 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 warm front lifts north over lake erie today before a cold front
crosses the lake tonight. the front with a pressure of 30.20
inches will waver across the ohio valley wednesday and thursday
before exiting late thursday into friday. high pressure 30.20 
builds over lake erie into saturday.


lez162-163-151415-
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-
343 am edt tue sep 15 2026

.today...south winds 15 to 20 knots diminishing to 10 to
15 knots. waves 2 to 4 feet subsiding to 1 to 2 feet. 
.tonight...south winds 5 to 15 knots becoming north. a slight
chance of showers and thunderstorms early, then showers with a
chance of thunderstorms from late evening on. waves 2 feet or
less. 
.wednesday...north winds 5 to 10 knots becoming northeast.
showers likely with a chance of thunderstorms in the morning,
then a chance of showers in the afternoon. waves 1 foot or less. 
.wednesday night...northeast winds 5 to 10 knots becoming east. a
chance of showers overnight. waves 1 foot or less. 
.thursday...northwest winds 5 to 15 knots becoming northeast.
showers likely during the day. waves 2 feet or less. 
.friday...northeast winds 10 to 15 knots becoming east. waves
2 feet or less. 
.saturday...southeast winds 10 to 15 knots becoming southwest. a
chance of showers during the day, then showers likely with a
chance of thunderstorms saturday night. waves 2 feet or less. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 150743
glfle 
expires:202609151415;;479729

open lake forecast for lake erie
national weather service cleveland oh
343 am edt tue sep 15 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 warm front lifts north over lake erie today before a cold front
crosses the lake tonight. the front with a pressure of 30.20
inches will waver across the ohio valley wednesday and thursday
before exiting late thursday into friday. high pressure 30.20 
builds over lake erie into saturday.


lez061-169-151415-
ripley to buffalo ny extending from 5nm off shoreline to us-
canadian border-
conneaut oh to ripley ny beyond 5 nm off shoreline to us-
canadian border-
343 am edt tue sep 15 2026

.today...south winds 15 to 20 knots diminishing to 10 to
15 knots. waves 1 to 3 feet building to 2 to 4 feet, then
subsiding to 1 to 3 feet. 
.tonight...south winds 10 to 15 knots becoming southwest. a
slight chance of showers and thunderstorms late in the evening. a
chance of showers with a slight chance of thunderstorms after
midnight. waves 1 to 3 feet. 
.wednesday...southwest winds 10 knots or less becoming northeast.
showers likely in the morning, then a chance of showers in the
afternoon. waves 1 foot or less. 
.wednesday night...northeast winds 10 knots or less becoming
east. a chance of showers overnight. waves 1 foot or less. 
.thursday...north winds 5 to 10 knots. a chance of showers during
the day. waves 1 foot or less. 
.friday...northeast winds 10 to 15 knots becoming east. waves
2 feet or less. 
.saturday...southeast winds 5 to 10 knots becoming southwest and
increasing to 15 to 20 knots. a chance of showers during the day,
then showers with a chance of thunderstorms saturday night. waves
1 to 3 feet building to 2 to 4 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 150743
glfle 
expires:202609151415;;479728

open lake forecast for lake erie
national weather service cleveland oh
343 am edt tue sep 15 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 warm front lifts north over lake erie today before a cold front
crosses the lake tonight. the front with a pressure of 30.20
inches will waver across the ohio valley wednesday and thursday
before exiting late thursday into friday. high pressure 30.20 
builds over lake erie into saturday.


lez164>168-151415-
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-geneva-on-
the-lake to conneaut oh beyond 5 nm off shoreline to us-
canadian border-
343 am edt tue sep 15 2026

.today...south winds 15 to 20 knots diminishing to 10 to
15 knots. waves 2 to 4 feet subsiding to 1 to 3 feet. 
.tonight...south winds 15 to 20 knots becoming west 5 to
15 knots. a chance of showers and thunderstorms. showers likely
with a slight chance of thunderstorms late. waves 1 to 3 feet. 
.wednesday...northwest winds 5 to 10 knots becoming northeast.
showers likely in the morning, then a chance of showers in the
afternoon. waves 2 feet or less. 
.wednesday night...northeast winds 10 knots or less becoming
east. a chance of showers. waves 1 foot or less. 
.thursday...west winds 5 to 15 knots becoming north. showers
likely during the day. waves 2 feet or less. 
.friday...northeast winds 15 to 20 knots becoming east. waves
1 to 2 feet. 
.saturday...southeast winds 10 to 15 knots becoming southwest
15 to 20 knots. a chance of showers during the day, then showers
likely with a chance of thunderstorms saturday night. waves 1 to
3 feet building to 2 to 4 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus63 kdtx 150752 cca
glflh 
expires:202609151600;;479827

open lake forecast for lake huron...corrected
national weather service detroit/pontiac mi
352 am edt tue sep 15 2026
 
corrected synopsis 

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, 29.30 inches, tracks across northern 
ontario today which elevates wind gusts to gale force across 
central and northern lake huron. a gale warning is in effect there
through this afternoon. the low pressure system ushers a weak 
cold front across the region tuesday night, then high pressure 
passes across northern ontario on wednesday.


lhz361-151600-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
352 am edt tue sep 15 2026

...gale warning in effect through this afternoon...

.today...south winds 20 to 25 knots. gusts to 35 knot gales. 
showers in the morning. waves 6 to 9 feet. waves occasionally 
around 12 feet. 
.tonight...southwest winds 10 to 15 knots veering to the
northwest by midnight...then decreasing to 5 to 10 knots early in
the morning. waves 3 to 5 feet subsiding to 1 to 3 feet early in
the morning. 
.wednesday...northwest winds 5 to 10 knots early in the morning
becoming light and variable. waves 2 feet or less. 
.wednesday night...light and variable winds. waves 2 feet or
less. 
.thursday...light and variable winds becoming west 5 to 10 knots
late in the afternoon...then becoming northwest 10 to 15 knots
late in the evening. waves 2 feet or less. 
.friday...north winds 10 to 15 knots becoming northeast 5 to
10 knots in the late morning and early afternoon...then becoming
light and variable early in the evening becoming southeast 10 to
15 knots by midnight. a chance of. waves 2 feet or less. 
.saturday...southeast winds 15 to 20 knots with gusts to around
30 knots. showers likely. a chance of showers by midnight. waves
3 to 5 feet building to 5 to 7 feet. waves occasionally around
10 feet. 


$$

fzus63 kdtx 150752 cca
glflh 
expires:202609151600;;479828

open lake forecast for lake huron...corrected
national weather service detroit/pontiac mi
352 am edt tue sep 15 2026
 
corrected synopsis 

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, 29.30 inches, tracks across northern 
ontario today which elevates wind gusts to gale force across 
central and northern lake huron. a gale warning is in effect there
through this afternoon. the low pressure system ushers a weak 
cold front across the region tuesday night, then high pressure 
passes across northern ontario on wednesday.


lhz362-363-151600-
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-
352 am edt tue sep 15 2026

...gale warning in effect through this afternoon...

.today...south winds to 30 knots. gusts to 40 knot gales. showers
in the morning. waves 10 to 14 feet. waves occasionally around 18
feet.
.tonight...southwest winds 10 to 15 knots veering to the
northwest after midnight...then veering to the northwest 10 to
15 knots early in the morning. waves 5 to 7 feet subsiding to
2 to 4 feet after midnight. waves occasionally around 10 feet. 
.wednesday...north winds 5 to 10 knots. waves 1 to 3 feet. 
.wednesday night...light and variable winds. waves 2 feet or
less. 
.thursday...light and variable winds becoming north 5 to 10 knots
late in the afternoon...then becoming northwest 10 to 15 knots
late in the evening. waves 2 feet or less. 
.friday...north winds 10 to 15 knots veering to the northeast in
the late morning and early afternoon...then decreasing to 5 to
10 knots early in the evening becoming east 10 to 15 knots by
midnight. a chance of. waves 1 to 3 feet. 
.saturday...southeast winds 10 to 15 knots increasing to 15 to
20 knots with gusts to around 30 knots. showers likely. a chance
of thunderstorms. a chance of showers by midnight. waves 2 to
4 feet building to 4 to 6 feet. waves occasionally around 8 feet.


$$

fzus63 kdtx 150752 cca
glflh 
expires:202609151600;;479829

open lake forecast for lake huron...corrected
national weather service detroit/pontiac mi
352 am edt tue sep 15 2026
 
corrected synopsis 

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, 29.30 inches, tracks across northern 
ontario today which elevates wind gusts to gale force across 
central and northern lake huron. a gale warning is in effect there
through this afternoon. the low pressure system ushers a weak 
cold front across the region tuesday night, then high pressure 
passes across northern ontario on wednesday.


lhz462>464-151600-
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-
352 am edt tue sep 15 2026

.today...south winds 20 to 25 knots. gusts to 30 knots. a chance 
of showers in the morning. waves 6 to 9 feet. waves occasionally 
around 12 feet.
.tonight...southwest winds 10 to 15 knots decreasing to 5 to
10 knots late in the evening...then veering to the west after
midnight becoming west 5 to 10 knots early in the morning. waves
3 to 5 feet subsiding to 1 to 3 feet in the late evening and
overnight. 
.wednesday...north winds 10 to 15 knots. waves 1 to 3 feet. 
.wednesday night...northeast winds 5 to 10 knots. a chance of
showers after midnight. waves 2 feet or less. 
.thursday...north winds 5 to 10 knots increasing to 10 to
15 knots late in the evening. a chance of showers. waves 2 feet
or less. 
.friday...north winds 10 to 15 knots veering to the northeast by
midnight. waves 2 to 4 feet. 
.saturday...southeast winds 10 to 15 knots increasing to 15 to
20 knots. showers likely and a chance of thunderstorms. waves
3 to 5 feet. 


$$

fzus63 kdtx 150750
glfsc 
expires:202609151600;;479804

lake st clair forecast
national weather service detroit/pontiac mi
350 am edt tue sep 15 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, 29.30 inches, tracks across northern 
ontario today which elevates wind gusts to gale force across 
central and northern lake huron. a gale warning is in effect there
through this afternoon. the low pressure system ushers a weak 
cold front across the region tuesday night, then high pressure 
passes across northern ontario on wednesday.


lcz460-151600-
lake st clair-
350 am edt tue sep 15 2026

.today...south winds 20 to 25 knots diminishing to 10 to 15 knots.
partly sunny. waves 1 to 3 feet.
.tonight...south winds 10 to 15 knots becoming west 5 to 10 knots by
midnight...then veering to the north early in the morning. showers
likely in the evening. a chance of thunderstorms. showers after
midnight. waves 2 feet or less.
.wednesday...north winds 10 to 15 knots becoming northeast 5 to 10
knots early in the afternoon. mostly cloudy. waves 2 feet or less.
.wednesday night...northeast winds 10 to 15 knots diminishing to 5
to 10 knots in the late evening and overnight. partly cloudy ...
then mostly cloudy with a chance of light showers after midnight.
waves 2 feet or less.
.thursday...north winds 5 to 10 knots. mostly cloudy with a chance
of light showers in the morning...then partly cloudy in the
afternoon and evening. waves 2 feet or less.
.friday...northeast winds 10 to 15 knots. partly cloudy. waves 2
feet or less.
.saturday...south winds 15 to 20 knots. showers and a chance of
thunderstorms. waves 1 to 3 feet.

$$

fzus63 kmkx 150754
glflm 
expires:202609151515;;479873

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
254 am cdt tue sep 15 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...

southerly gales will continue through this morning. a gale 
warning is in effect through 7 am cdt for the southern two-
thirds, and through 1 pm cdt for the northern third. isolated
gales may continue for a few hours after the expiration times. 
gales will gradually diminish as low pressure around 29.3 inches 
tracks into hudson bay into this afternoon. a trailing cold front
with isolated thunderstorms ahead of it will slow and weaken as 
it moves across the lake early this evening, turning winds to 
northwesterly. winds will shift to northeasterly by early 
wednesday morning as high pressure around 30.4 inches moves across
the northern great lakes. lighter and variable winds will then 
prevail wednesday night into friday until stronger southerly winds
return friday night and saturday ahead of another low pressure 
area approaching from the great plains.


lmz080-669-671-673-675-777-779-870-872-874-876-878-151515-
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-
254 am cdt tue sep 15 2026

sheboygan wi to pentwater mi south...

...gale warning in effect until 7 am cdt this morning...

.today...south gales to 35 kt becoming southwest 15 to 25 kt.
numerous showers with a chance of thunderstorms this morning,
then scattered showers with isolated thunderstorms this
afternoon. waves 8 to 12 ft occasionally to 16 ft subsiding to
5 to 8 ft occasionally to 10 ft. 
.tonight...northwest winds 10 to 20 kt veering to northeast.
chance of showers and slight chance of thunderstorms in the
evening, then slight chance of showers overnight. waves 4 to 6 ft
occasionally to 8 ft subsiding to 3 to 5 ft. 
.wednesday...northeast winds 10 to 20 kt diminishing to 10 to
15 kt. chance of showers in the morning. waves 3 to 5 ft
subsiding to 2 to 4 ft. 
.wednesday night...east winds 10 to 20 kt becoming southeast
10 to 15 kt. chance of showers. waves 1 to 3 ft. 
.thursday...northwest winds 10 to 15 kt becoming north. chance of
showers in the morning. waves 1 to 2 ft. 
.thursday night...northeast winds 10 to 20 kt diminishing to
10 to 15 kt. waves 2 to 4 ft. 
.friday...east winds 10 to 15 kt. chance of showers. waves 3 to
5 ft. 
.saturday...south gales to 35 kt. showers likely with a chance of
thunderstorms. waves 8 to 11 ft occasionally to 14 ft.  

$$

fzus63 kmkx 150754
glflm 
expires:202609151515;;479871

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
254 am cdt tue sep 15 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...

southerly gales will continue through this morning. a gale 
warning is in effect through 7 am cdt for the southern two-
thirds, and through 1 pm cdt for the northern third. isolated
gales may continue for a few hours after the expiration times. 
gales will gradually diminish as low pressure around 29.3 inches 
tracks into hudson bay into this afternoon. a trailing cold front
with isolated thunderstorms ahead of it will slow and weaken as 
it moves across the lake early this evening, turning winds to 
northwesterly. winds will shift to northeasterly by early 
wednesday morning as high pressure around 30.4 inches moves across
the northern great lakes. lighter and variable winds will then 
prevail wednesday night into friday until stronger southerly winds
return friday night and saturday ahead of another low pressure 
area approaching from the great plains.


lmz261-362-364-563-151515-
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 rock island passage to sturgeon bay wi-
254 am cdt tue sep 15 2026

sturgeon bay wi to point betsie mi north...

...gale warning in effect until 1 pm cdt this afternoon...

.today...south gales to 40 kt becoming southwest gales to 35 kt.
scattered showers this morning. waves 10 to 14 ft occasionally to
18 ft subsiding to 6 to 9 ft occasionally to 12 ft. 
.tonight...northwest winds to 30 kt diminishing to 10 to 20 kt
late in the evening, then becoming northwest 10 to 20 kt after
midnight becoming north 10 to 15 kt late. waves 4 to 7 ft
occasionally to 9 ft subsiding to 2 to 4 ft. 
.wednesday...north winds 5 to 10 kt becoming northeast. waves
1 to 3 ft subsiding to 1 to 2 ft. 
.wednesday night...east winds 10 to 15 kt becoming southeast.
waves 1 ft or less. 
.thursday...south winds 10 to 15 kt veering to northwest. waves
nearly calm. 
.thursday night...north winds 10 to 15 kt becoming northeast 5 to
10 kt. waves 1 to 2 ft. 
.friday...east winds 5 to 10 kt. waves 1 to 2 ft. 
.saturday...southeast winds to 30 kt increasing to gales to
35 kt. showers likely with a chance of thunderstorms. waves 5 to
8 ft occasionally to 10 ft.  

$$

fzus63 kmkx 150754
glflm 
expires:202609151515;;479872

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
254 am cdt tue sep 15 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...

southerly gales will continue through this morning. a gale 
warning is in effect through 7 am cdt for the southern two-
thirds, and through 1 pm cdt for the northern third. isolated
gales may continue for a few hours after the expiration times. 
gales will gradually diminish as low pressure around 29.3 inches 
tracks into hudson bay into this afternoon. a trailing cold front
with isolated thunderstorms ahead of it will slow and weaken as 
it moves across the lake early this evening, turning winds to 
northwesterly. winds will shift to northeasterly by early 
wednesday morning as high pressure around 30.4 inches moves across
the northern great lakes. lighter and variable winds will then 
prevail wednesday night into friday until stronger southerly winds
return friday night and saturday ahead of another low pressure 
area approaching from the great plains.


lmz366-565-567-868-151515-
lake michigan from point betsie to manistee mi 5 nm offshore to
mid lake-
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-
254 am cdt tue sep 15 2026

sturgeon bay wi to point betsie mi south to sheboygan wi to
pentwater mi...

...gale warning in effect until 7 am cdt this morning...

.today...south gales to 35 kt becoming southwest to 30 kt, then
diminishing to 15 to 25 kt late. scattered showers with a chance
of thunderstorms this morning, then isolated showers this
afternoon. waves 10 to 14 ft occasionally to 18 ft subsiding to
5 to 8 ft occasionally to 10 ft. 
.tonight...west winds 10 to 20 kt veering to north. waves 4 to
6 ft occasionally to 8 ft subsiding to 3 to 5 ft. 
.wednesday...northeast winds 10 to 15 kt diminishing to 5 to
10 kt. waves 2 to 4 ft subsiding to 1 to 3 ft. 
.wednesday night...east winds 10 to 15 kt becoming southeast.
waves 1 to 2 ft. 
.thursday...northeast winds 10 to 15 kt becoming north. waves
1 to 2 ft. 
.thursday night...northeast winds 10 to 15 kt. waves 1 to 3 ft. 
.friday...east winds 10 to 15 kt. chance of showers. waves 1 to
3 ft. 
.saturday...southeast gales to 35 kt becoming south. showers with
a chance of thunderstorms. waves 8 to 11 ft occasionally to
14 ft.  

$$

fzus63 kmqt 150801
glfls 
expires:202609152000;;480095

open lake forecast for lake superior
national weather service marquette mi
400 am edt tue sep 15 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 29.3 inch low currently over manitoba moves to southern hudson bay 
at 29.4 inches by this afternoon, bringing 29.7 inch troughing 
across lake superior. meanwhile, 30.2 inch high pressure develops 
over the northern plains this afternoon, strengthening to 30.4 
inches as it crosses the upper great lakes on wednesday. high 
pressure ridging of 30.2 to 30.3 inches then looks to remain over 
lake superior through the rest of the workweek. 




lsz162-152000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
400 am edt tue sep 15 2026 /300 am cdt tue sep 15 2026/

...gale warning in effect from 8 am edt /7 am cdt/ this morning
to 4 pm edt /3 pm cdt/ this afternoon...

.early this morning...southwest winds 20 to 30 knots. waves 3 to
6 feet occasionally to 8 feet. 
.today...southwest gales to 40 knots veering west in the
afternoon, then diminishing to 20 to 30 knots late. waves
building to 7 to 10 feet occasionally to 13 feet, then subsiding
to 3 to 5 feet occasionally to 7 feet. 
.tonight...west winds 10 to 20 knots diminishing to 5 to 15 knots
after midnight, then veering northwest late. waves subsiding to
calm to 2 feet. 
.wednesday...north winds 5 to 15 knots veering east in the
afternoon. waves calm to 2 feet. 
.wednesday night...east winds 5 to 15 knots. waves calm to
2 feet. 
.thursday...northwest winds 5 to 15 knots backing west by mid
afternoon. waves calm to 2 feet. 
.thursday night...north winds 5 to 15 knots becoming northeast
10 to 20 knots after midnight. waves calm to 2 feet. 
.friday...east winds 15 to 25 knots increasing to 20 to 30 knots.
a chance of showers. waves building to 2 to 4 feet. 
.saturday...northeast winds 20 to 30 knots. a chance of showers.
waves building to 3 to 5 feet occasionally to 7 feet. 

$$

fzus63 kmqt 150801
glfls 
expires:202609152000;;480096

open lake forecast for lake superior
national weather service marquette mi
400 am edt tue sep 15 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 29.3 inch low currently over manitoba moves to southern hudson bay 
at 29.4 inches by this afternoon, bringing 29.7 inch troughing 
across lake superior. meanwhile, 30.2 inch high pressure develops 
over the northern plains this afternoon, strengthening to 30.4 
inches as it crosses the upper great lakes on wednesday. high 
pressure ridging of 30.2 to 30.3 inches then looks to remain over 
lake superior through the rest of the workweek. 




lsz263-152000-
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-
400 am edt tue sep 15 2026

...gale warning in effect from 8 am edt this morning through this
evening...

.early this morning...southwest winds 20 to 30 knots. waves 4 to
7 feet occasionally to 9 feet. 
.today...southwest gales to 45 knots veering west in the
afternoon. waves building to 10 to 14 feet occasionally to
18 feet, then subsiding to 7 to 10 feet occasionally to 13 feet. 
.tonight...west winds 15 to 25 knots diminishing to 10 to
20 knots after midnight, then veering northwest late. waves
subsiding to calm to 2 feet. 
.wednesday...north winds 5 to 15 knots becoming northeast less
than 10 knots in the afternoon, then becoming east 5 to 15 knots
late. waves calm to 2 feet. 
.wednesday night...east winds 5 to 15 knots veering south after
midnight. waves calm to 2 feet. 
.thursday...west winds 5 to 15 knots. waves calm to 2 feet. 
.thursday night...north winds 5 to 15 knots veering east after
midnight. waves calm to 2 feet. 
.friday...east winds 10 to 20 knots increasing to 15 to 25 knots.
a chance of showers. waves building to 2 to 4 feet. 
.saturday...east winds 20 to 30 knots backing northeast. a chance
of showers. waves building to 3 to 5 feet occasionally to 7 feet.

$$

fzus63 kmqt 150801
glfls 
expires:202609152000;;480097

open lake forecast for lake superior
national weather service marquette mi
400 am edt tue sep 15 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 29.3 inch low currently over manitoba moves to southern hudson bay 
at 29.4 inches by this afternoon, bringing 29.7 inch troughing 
across lake superior. meanwhile, 30.2 inch high pressure develops 
over the northern plains this afternoon, strengthening to 30.4 
inches as it crosses the upper great lakes on wednesday. high 
pressure ridging of 30.2 to 30.3 inches then looks to remain over 
lake superior through the rest of the workweek. 




lsz264-152000-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
400 am edt tue sep 15 2026

...gale warning in effect from 8 am edt this morning through this
evening...

.early this morning...south winds 20 to 30 knots. waves 6 to
10 feet occasionally to 13 feet. 
.today...southwest gales to 45 knots veering west in the
afternoon. waves subsiding to 5 to 8 feet occasionally to
10 feet, then building to 10 to 14 feet occasionally to 18 feet. 
.tonight...west winds 20 to 30 knots diminishing to 10 to
20 knots after midnight, then becoming northwest 5 to 15 knots
late. waves subsiding to 1 to 3 feet. 
.wednesday...northwest winds 5 to 15 knots becoming north less
than 10 knots in the afternoon, then veering southeast late.
waves subsiding to calm to 2 feet. 
.wednesday night...south winds 5 to 15 knots. waves calm to
2 feet. 
.thursday...west 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 10 to 20 knots becoming southeast 15 to
25 knots. a chance of showers. waves building to 2 to 4 feet. 
.saturday...east winds 20 to 30 knots becoming northeast 15 to
25 knots. a chance of showers. waves building to 3 to 6 feet
occasionally to 8 feet, then subsiding to 2 to 4 feet. 

$$

fzus63 kmqt 150801
glfls 
expires:202609152000;;480098

open lake forecast for lake superior
national weather service marquette mi
400 am edt tue sep 15 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 29.3 inch low currently over manitoba moves to southern hudson bay 
at 29.4 inches by this afternoon, bringing 29.7 inch troughing 
across lake superior. meanwhile, 30.2 inch high pressure develops 
over the northern plains this afternoon, strengthening to 30.4 
inches as it crosses the upper great lakes on wednesday. high 
pressure ridging of 30.2 to 30.3 inches then looks to remain over 
lake superior through the rest of the workweek. 




lsz265-152000-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
400 am edt tue sep 15 2026

...gale warning in effect through this evening...

.early this morning...south gales to 40 knots. waves 4 to 8 feet
occasionally to 10 feet. 
.today...southwest gales to 35 knots becoming west gales to
40 knots in the afternoon. waves subsiding to 3 to 6 feet
occasionally to 8 feet, then building to 7 to 10 feet
occasionally to 13 feet. 
.tonight...west winds 20 to 30 knots diminishing to 15 to
25 knots after midnight, then becoming northwest 10 to 20 knots
late. waves subsiding to calm to 2 feet. 
.wednesday...northwest winds 5 to 15 knots veering north in the
afternoon, then veering east late. waves calm to 2 feet. 
.wednesday night...southeast winds 10 to 20 knots veering south
after midnight. waves calm to 2 feet. 
.thursday...west winds 10 to 20 knots veering northwest by mid
afternoon. waves calm to 2 feet. 
.thursday night...north winds 10 to 20 knots veering northeast
after midnight. waves calm to 2 feet. 
.friday...east winds 15 to 25 knots becoming southeast 20 to
30 knots. a chance of showers. waves building to 3 to 5 feet
occasionally to 7 feet. 
.saturday...southeast gales to 40 knots becoming northeast 20 to
30 knots. a chance of showers. waves building to 5 to 8 feet
occasionally to 10 feet, then subsiding to 3 to 5 feet
occasionally to 7 feet. 

$$

fzus63 kmqt 150801
glfls 
expires:202609152000;;480099

open lake forecast for lake superior
national weather service marquette mi
400 am edt tue sep 15 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 29.3 inch low currently over manitoba moves to southern hudson bay 
at 29.4 inches by this afternoon, bringing 29.7 inch troughing 
across lake superior. meanwhile, 30.2 inch high pressure develops 
over the northern plains this afternoon, strengthening to 30.4 
inches as it crosses the upper great lakes on wednesday. high 
pressure ridging of 30.2 to 30.3 inches then looks to remain over 
lake superior through the rest of the workweek. 




lsz266-152000-
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-
400 am edt tue sep 15 2026

...gale warning in effect through this evening...

.early this morning...south gales to 40 knots. a slight chance of
showers. waves 8 to 11 feet occasionally to 14 feet. 
.today...south gales to 35 knots becoming west gales to 40 knots
in the afternoon. waves subsiding to 5 to 8 feet occasionally to
10 feet, then building to 10 to 14 feet occasionally to 18 feet. 
.tonight...west gales to 35 knots diminishing to 15 to 25 knots
after midnight, then becoming northwest 10 to 20 knots late.
waves subsiding to 2 to 4 feet. 
.wednesday...northwest winds 5 to 15 knots becoming north less
than 10 knots in the afternoon, then becoming east 5 to 15 knots
late. waves subsiding to calm to 2 feet. 
.wednesday night...southeast winds 5 to 15 knots veering south
after midnight. a slight chance of showers through midnight.
waves calm to 2 feet. 
.thursday...west winds 5 to 15 knots becoming northwest 10 to
20 knots by mid afternoon. waves calm to 2 feet. 
.thursday night...north winds 10 to 20 knots veering northeast
after midnight. waves calm to 2 feet. 
.friday...east winds 10 to 20 knots becoming southeast 20 to
30 knots. a chance of showers. waves building to 3 to 5 feet
occasionally to 7 feet. 
.saturday...southeast gales to 40 knots becoming northeast 20 to
30 knots. a chance of showers. waves building to 5 to 8 feet
occasionally to 10 feet, then subsiding to 3 to 5 feet
occasionally to 7 feet. 

$$

fzus63 kmqt 150801
glfls 
expires:202609152000;;480100

open lake forecast for lake superior
national weather service marquette mi
400 am edt tue sep 15 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 29.3 inch low currently over manitoba moves to southern hudson bay 
at 29.4 inches by this afternoon, bringing 29.7 inch troughing 
across lake superior. meanwhile, 30.2 inch high pressure develops 
over the northern plains this afternoon, strengthening to 30.4 
inches as it crosses the upper great lakes on wednesday. high 
pressure ridging of 30.2 to 30.3 inches then looks to remain over 
lake superior through the rest of the workweek. 




lsz267-152000-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
400 am edt tue sep 15 2026

...gale warning in effect until 9 am edt this morning...

.early this morning...south gales to 40 knots. a chance of
showers. waves 6 to 9 feet occasionally to 11 feet. 
.today...south gales to 35 knots becoming southwest 20 to
30 knots in the afternoon, then becoming west gales to 35 knots
late. a slight chance of showers through early afternoon. waves
subsiding to 4 to 7 feet occasionally to 9 feet, then building to
7 to 10 feet occasionally to 13 feet. 
.tonight...west gales to 35 knots becoming northwest 15 to
25 knots after midnight, then diminishing to 10 to 20 knots late.
waves subsiding to 2 to 4 feet. 
.wednesday...northwest winds 5 to 15 knots veering north late.
waves subsiding to calm to 2 feet. 
.wednesday night...southeast winds 5 to 15 knots veering south
after midnight. waves calm to 2 feet. 
.thursday...southwest winds 5 to 15 knots becoming northwest
10 to 20 knots by mid afternoon. waves calm to 2 feet. 
.thursday night...northwest winds 10 to 20 knots veering
northeast after midnight. waves building to 1 to 3 feet. 
.friday...east winds 5 to 15 knots becoming southeast 15 to
25 knots. a chance of showers. waves subsiding to calm to 2 feet,
then building to 2 to 4 feet. 
.saturday...southeast winds 20 to 30 knots backing northeast. a
chance of showers. waves building to 3 to 6 feet occasionally to
8 feet, then subsiding to 2 to 4 feet. 

$$