fzus61 kbuf 162002
glflo 
expires:202609170300;;562965

open lake forecast for lake ontario
national weather service buffalo ny
402 pm edt wed sep 16 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 weak cold front will settle south of the lake this 
evening, then stall just south of the lake thursday. a 30.4 inch 
high will then build from northwest ontario province thursday night 
to southern quebec by saturday morning before moving off the new 
england coast by sunday while weakening to 30.2 inches. another 30.4 
inch high will then build from northwest ontario province sunday to 
western quebec monday. meanwhile, a 29.8 inch low will move into the 
lower ohio valley by monday.


loz063>065-170300-
lake ontario open waters from hamlin beach to the saint lawrence
river-
402 pm edt wed sep 16 2026

.tonight...west winds 5 to 15 knots becoming northeast. waves
2 feet or less. 
.thursday...northeast winds 5 to 10 knots becoming north. a
chance of showers in the morning. waves 2 feet or less. 
.thursday night...northwest winds 5 to 15 knots. waves 2 feet or
less. 
.friday...northwest winds 10 to 15 knots becoming north. waves
1 to 3 feet. 
.friday night...north winds 10 to 15 knots becoming east. waves
1 to 3 feet. 
.saturday...east winds 5 to 15 knots becoming southeast. showers
likely saturday night. waves 1 to 3 feet. 
.sunday...northeast winds 15 to 20 knots. showers likely during
the day. waves 2 to 4 feet building to 3 to 5 feet. 
.monday...northeast winds 15 to 25 knots becoming east. a chance
of showers monday night. waves 3 to 5 feet. 

$$

fzus61 kbuf 162002
glflo 
expires:202609170300;;562964

open lake forecast for lake ontario
national weather service buffalo ny
402 pm edt wed sep 16 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 weak cold front will settle south of the lake this 
evening, then stall just south of the lake thursday. a 30.4 inch 
high will then build from northwest ontario province thursday night 
to southern quebec by saturday morning before moving off the new 
england coast by sunday while weakening to 30.2 inches. another 30.4 
inch high will then build from northwest ontario province sunday to 
western quebec monday. meanwhile, a 29.8 inch low will move into the 
lower ohio valley by monday.


loz062-170300-
lake ontario open waters from the niagara river to hamlin beach-
402 pm edt wed sep 16 2026

.tonight...northwest winds 5 to 10 knots becoming east. waves
2 feet or less. 
.thursday...northeast winds 10 knots or less becoming northwest.
a chance of showers early. waves 1 to 2 feet. 
.thursday night...west winds 5 to 10 knots becoming northwest.
waves 1 to 2 feet. 
.friday...northwest winds 5 to 10 knots becoming north. waves
2 feet or less. 
.friday night...north winds 5 to 15 knots becoming east. waves
2 feet or less building to 2 to 3 feet. 
.saturday...east winds 10 to 15 knots increasing to 15 to
20 knots. a chance of showers during the day, then showers likely
saturday night. waves 2 to 3 feet. 
.sunday...northeast winds 15 to 20 knots. showers likely during
the day. waves 2 to 4 feet building to 3 to 6 feet. 
.monday...northeast winds 15 to 25 knots becoming east. a chance
of showers monday night. waves 4 to 7 feet. waves occasionally
around 9 feet. 

$$

fzus61 kcle 161959
glfle 
expires:202609170215;;562655

open lake forecast for lake erie
national weather service cleveland oh
359 pm edt wed sep 16 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 slowly sag south tonight into thursday,
followed by high pressure 30.20 inches for friday. low pressure
29.90 inches will track east across the great lakes on saturday 
and extend a cold front through the area on sunday. a trough
averaging 30.00 inches will linger behind the front into early 
next week.


lez164>167-170215-
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-
359 pm edt wed sep 16 2026

.tonight...northeast winds 5 to 10 knots becoming east. a chance
of showers with a slight chance of thunderstorms. waves 1 foot or
less. 
.thursday...northeast winds 5 to 10 knots becoming north. a
chance of showers with a slight chance of thunderstorms in the
morning. waves 1 foot or less. 
.thursday night...north winds 5 to 15 knots. waves 2 feet or less
building to 2 to 3 feet. 
.friday...northeast winds 15 to 20 knots diminishing to 10 to
15 knots. waves 2 to 4 feet subsiding to 1 to 3 feet. 
.friday night...northeast winds 5 to 15 knots becoming east.
waves 1 to 3 feet. 
.saturday...east winds 10 to 15 knots becoming south. a chance of
showers during the day, then showers with a chance of
thunderstorms saturday night. waves 1 to 3 feet. 
.sunday...northwest winds 15 to 25 knots becoming east. showers
likely during the day. waves 3 to 6 feet building to 4 to 7 feet.
waves occasionally around 9 feet. 
.monday...northeast winds to 30 knots becoming east 15 to
25 knots. a chance of showers. waves 5 to 8 feet. waves
occasionally around 10 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 161959
glfle 
expires:202609170215;;562656

open lake forecast for lake erie
national weather service cleveland oh
359 pm edt wed sep 16 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 slowly sag south tonight into thursday,
followed by high pressure 30.20 inches for friday. low pressure
29.90 inches will track east across the great lakes on saturday 
and extend a cold front through the area on sunday. a trough
averaging 30.00 inches will linger behind the front into early 
next week.


lez061-168-169-170215-
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-
359 pm edt wed sep 16 2026

.tonight...northeast winds 10 knots or less. a chance of showers
late this evening. a chance of showers with a slight chance of
thunderstorms after midnight, then showers likely with a slight
chance of thunderstorms late. waves 2 feet or less. 
.thursday...northeast winds 5 to 10 knots becoming north. a
chance of showers with a slight chance of thunderstorms in the
morning. waves 2 feet or less. 
.thursday night...north winds 10 knots or less increasing to
10 to 15 knots. waves 2 feet or less. 
.friday...northeast winds 5 to 15 knots. waves 1 to 3 feet. 
.friday night...northeast winds 5 to 15 knots becoming east.
waves 2 feet or less. 
.saturday...east winds 10 to 15 knots becoming south. a chance of
showers during the day, then showers saturday night. waves 1 to
3 feet. 
.sunday...north winds 15 to 20 knots becoming east. showers
likely during the day. waves 2 to 4 feet building to 3 to 6 feet.
.monday...east winds 15 to 25 knots. a chance of showers monday
night. waves 3 to 6 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 161959
glfle 
expires:202609170215;;562654

open lake forecast for lake erie
national weather service cleveland oh
359 pm edt wed sep 16 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 slowly sag south tonight into thursday,
followed by high pressure 30.20 inches for friday. low pressure
29.90 inches will track east across the great lakes on saturday 
and extend a cold front through the area on sunday. a trough
averaging 30.00 inches will linger behind the front into early 
next week.


lez162-163-170215-
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 wed sep 16 2026

.tonight...northeast winds 5 to 10 knots. a chance of showers
with a slight chance of thunderstorms. waves 1 foot or less. 
.thursday...north winds 10 knots or less. a chance of showers
with a slight chance of thunderstorms in the morning. waves
1 foot or less. 
.thursday night...north winds 5 to 15 knots becoming northeast.
waves 2 feet or less. 
.friday...northeast winds 10 to 15 knots. waves 1 to 3 feet. 
.friday night...northeast winds 10 to 15 knots becoming east.
waves 2 feet or less. 
.saturday...southeast winds 10 to 15 knots becoming southwest.
showers with a chance of thunderstorms. waves 1 to 2 feet. 
.sunday...northwest winds 15 to 25 knots becoming northeast. a
chance of showers during the day. waves 1 to 3 feet building to
3 to 6 feet. 
.monday...east winds to 30 knots becoming northeast 15 to
25 knots. a chance of showers. waves 3 to 6 feet building to 4 to
7 feet, then subsiding to 3 to 6 feet. waves occasionally around
9 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus63 kdtx 161953
glfsc 
expires:202609170400;;562473

lake st clair forecast
national weather service detroit/pontiac mi
353 pm edt wed sep 16 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...southern edge of northern ontario high pressure, 30.30
inches, slides across the central great lakes through thursday.
the cold front stalls near the southern great lakes into
thursday. another cold front passes southward through the region
thursday night into early friday before plains low pressure
arrives this weekend.


lcz460-170400-
lake st clair-
353 pm edt wed sep 16 2026

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

$$

fzus63 kdtx 161953
glflh 
expires:202609170400;;562469

open lake forecast for lake huron
national weather service detroit/pontiac mi
353 pm edt wed sep 16 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...southern edge of northern ontario high pressure, 30.30
inches, slides across the central great lakes through thursday.
the cold front stalls near the southern great lakes into
thursday. another cold front passes southward through the region
thursday night into early friday before plains low pressure
arrives this weekend.


lhz361-170400-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
353 pm edt wed sep 16 2026

.tonight...light and variable winds. waves 2 feet or less. 
.thursday...light and variable winds. waves 2 feet or less. 
.thursday night...west winds 5 to 10 knots becoming northwest
10 to 15 knots in the late evening and overnight. waves 2 feet or
less. 
.friday...north winds 10 to 15 knots becoming light and variable.
waves 2 feet or less. 
.friday night...light and variable winds becoming southeast 5 to
10 knots in the late evening and overnight. a chance of showers
after midnight. waves 2 feet or less. 
.saturday...southeast winds 10 to 15 knots becoming east 5 to
10 knots late in the evening. showers likely...then a chance of
showers late in the afternoon. waves 1 to 3 feet. 
.sunday...northeast winds 10 to 15 knots increasing to northeast
15 to 20 knots with gusts to around 30 knots by midnight. waves
2 feet or less building to 3 to 5 feet by midnight. 
.monday...east winds 15 to 20 knots with gusts to around 30 knots
decreasing to 10 to 15 knots . waves 3 to 5 feet. 


$$

fzus63 kdtx 161953
glflh 
expires:202609170400;;562470

open lake forecast for lake huron
national weather service detroit/pontiac mi
353 pm edt wed sep 16 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...southern edge of northern ontario high pressure, 30.30
inches, slides across the central great lakes through thursday.
the cold front stalls near the southern great lakes into
thursday. another cold front passes southward through the region
thursday night into early friday before plains low pressure
arrives this weekend.


lhz362-363-170400-
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-
353 pm edt wed sep 16 2026

.tonight...light and variable winds. waves 2 feet or less. 
.thursday...north winds 5 to 10 knots in the morning becoming
light and variable. waves 2 feet or less. 
.thursday night...light and variable winds becoming northwest
5 to 10 knots by midnight...then increasing to 10 to 15 knots
after midnight. waves 2 feet or less. 
.friday...north winds 10 to 15 knots becoming northeast 5 to
10 knots early in the afternoon. waves 2 to 4 feet. 
.friday night...northeast winds 5 to 10 knots veering to the east
after midnight. a chance of showers after midnight. waves 2 feet
or less. 
.saturday...east winds 10 to 15 knots. showers likely...then a
chance of showers late in the evening. waves 1 to 3 feet building
to 2 to 4 feet. 
.sunday...northeast winds 10 to 15 knots increasing to 15 to
20 knots in the late morning and early afternoon...then
decreasing to 10 to 15 knots early in the evening increasing to
15 to 20 knots by midnight. a chance of showers early in the
morning. waves 3 to 5 feet. 
.monday...east winds 15 to 20 knots. waves 3 to 5 feet. 


$$

fzus63 kdtx 161953
glflh 
expires:202609170400;;562471

open lake forecast for lake huron
national weather service detroit/pontiac mi
353 pm edt wed sep 16 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...southern edge of northern ontario high pressure, 30.30
inches, slides across the central great lakes through thursday.
the cold front stalls near the southern great lakes into
thursday. another cold front passes southward through the region
thursday night into early friday before plains low pressure
arrives this weekend.


lhz462>464-170400-
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-
353 pm edt wed sep 16 2026

.tonight...north winds 10 to 15 knots becoming northeast 5 to
10 knots in the late evening and overnight. waves 1 to 3 feet. 
.thursday...north winds 5 to 10 knots. waves 2 feet or less. 
.thursday night...north winds 5 to 10 knots increasing to 10 to
15 knots after midnight. waves 1 to 3 feet. 
.friday...north winds 10 to 15 knots. waves 2 to 4 feet. 
.friday night...northeast winds 10 to 15 knots veering to the
east after midnight. a chance of showers after midnight. waves
1 to 3 feet. 
.saturday...east winds 10 to 15 knots becoming southeast 15 to
20 knots late in the morning...then becoming east 10 to 15 knots
late in the evening. a chance of showers in the morning...then
showers late in the morning. rain showers likely late in the
evening. waves 1 to 3 feet building to 2 to 4 feet. 
.sunday...northeast winds 10 to 15 knots increasing to 15 to
20 knots. a chance of showers early in the morning. waves 3 to
5 feet. 
.monday...east winds 15 to 20 knots decreasing to 10 to 15 knots
until early evening...then increasing to 15 to 20 knots by
midnight. waves 3 to 5 feet. 


$$

fzus63 kmkx 161944
glflm 
expires:202609170315;;562406

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
244 pm cdt wed sep 16 2026

for waters beyond five nautical miles of shore on lake michigan.

waves are provided as a range of significant wave heights, which
is the average of the highest 1/3 of the wave, along with the
average height of the highest 10% of the waves which will
occasionally be encountered.

.synopsis...

high pressure around 30.4 inches continues to track east across
southern ontario with mostly northeast winds. mostly light and 
variable winds expected late tonight through thursday as high 
pressure continues to build east.

breezy east to northeast winds may then develop friday into this 
weekend as low pressure around 29.8 inches develops in the 
central plains and lifts into the upper midwest by saturday.
gusty southeasterly winds develop saturday as low pressure
approaches, crossing the southern portion of the lake as high
pressure continues across ontario, bringing continued generally
easterly winds and perhaps gales at times throughout the day.
saturday night, winds turn northeasterly, continuing through
sunday. gale potential diminishes late saturday night, although
gusts around 30 kt are possible through sunday for the southern
two-thirds.


lmz080-669-671-673-675-777-779-870-872-874-876-878-170315-
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-
244 pm cdt wed sep 16 2026

sheboygan wi to pentwater mi south...

.tonight...northeast winds 10 to 20 kt becoming east 10 to 15 kt,
then diminishing to 5 to 10 kt late. chance of sprinkles this
evening, then chance of showers and slight chance of
thunderstorms overnight. waves 1 to 3 ft. 
.thursday...northeast winds 5 to 10 kt becoming north 10 to
15 kt. chance of showers in the morning. waves 1 to 2 ft. 
.thursday night...north winds 10 to 15 kt becoming northeast
10 to 20 kt. waves 1 to 3 ft. 
.friday...east winds 10 to 20 kt diminishing to 10 to 15 kt.
waves 2 to 4 ft. 
.friday night...east winds 15 to 25 kt becoming southeast to
30 kt. chance of showers in the evening, then showers overnight.
waves 4 to 6 ft occasionally to 8 ft building to 7 to 10 ft
occasionally to 13 ft. 
.saturday...southeast winds to 30 kt. showers in the morning,
then showers with a chance of thunderstorms in the afternoon.
waves 8 to 11 ft occasionally to 14 ft subsiding to 7 to 10 ft
occasionally to 13 ft. 
.saturday night...northeast winds 15 to 25 kt. chance of showers
and thunderstorms. waves 5 to 8 ft occasionally to 10 ft
subsiding to 4 to 7 ft occasionally to 9 ft. 
.sunday...northeast winds to 30 kt. chance of showers. waves 6 to
9 ft occasionally to 12 ft. 
.monday...east winds 15 to 25 kt increasing to 30 kt. chance of
showers. waves 5 to 8 ft occasionally to 10 ft.  

$$

fzus63 kmkx 161944
glflm 
expires:202609170315;;562405

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
244 pm cdt wed sep 16 2026

for waters beyond five nautical miles of shore on lake michigan.

waves are provided as a range of significant wave heights, which
is the average of the highest 1/3 of the wave, along with the
average height of the highest 10% of the waves which will
occasionally be encountered.

.synopsis...

high pressure around 30.4 inches continues to track east across
southern ontario with mostly northeast winds. mostly light and 
variable winds expected late tonight through thursday as high 
pressure continues to build east.

breezy east to northeast winds may then develop friday into this 
weekend as low pressure around 29.8 inches develops in the 
central plains and lifts into the upper midwest by saturday.
gusty southeasterly winds develop saturday as low pressure
approaches, crossing the southern portion of the lake as high
pressure continues across ontario, bringing continued generally
easterly winds and perhaps gales at times throughout the day.
saturday night, winds turn northeasterly, continuing through
sunday. gale potential diminishes late saturday night, although
gusts around 30 kt are possible through sunday for the southern
two-thirds.


lmz261-362-364-366-563-565-567-868-170315-
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-
244 pm cdt wed sep 16 2026

sheboygan wi to pentwater mi north...

.tonight...northeast winds 10 to 15 kt becoming east 5 to 10 kt.
chance of showers overnight. waves 1 to 3 ft. 
.thursday...east winds 5 to 10 kt backing to northwest 10 to
15 kt. slight chance of showers in the morning. waves 1 to 2 ft. 
.thursday night...north winds 10 to 15 kt becoming northeast
10 to 20 kt. waves 2 to 4 ft. 
.friday...northeast winds 10 to 20 kt becoming east 10 to 15 kt.
waves 2 to 4 ft. 
.friday night...east winds 15 to 25 kt becoming southeast to
30 kt. chance of showers in the evening, then showers overnight.
waves 3 to 5 ft building to 6 to 9 ft occasionally to 12 ft. 
.saturday...southeast winds to 30 kt becoming east. showers in
the morning, then chance of showers in the afternoon. waves 7 to
10 ft occasionally to 13 ft. 
.saturday night...east winds 15 to 25 kt becoming northeast.
chance of showers. waves 4 to 7 ft occasionally to 9 ft subsiding
to 4 to 6 ft occasionally to 8 ft. 
.sunday...northeast winds 15 to 25 kt. waves 4 to 6 ft
occasionally to 8 ft. 
.monday...east winds 15 to 25 kt increasing to 30 kt. waves 3 to
5 ft.  

$$

fzus63 kmqt 161958
glfls 
expires:202609170800;;562611

open lake forecast for lake superior
national weather service marquette mi
357 pm edt wed sep 16 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...

high pressure of 30.4 inches today weakens to 30.3 inches over 
quebec early thursday morning as 29.9 inch low pressure moves along 
the western hudson bay shoreline. meanwhile, 30.4 inch high pressure 
develops over north dakota and manitoba. this high moves over 
northern ontario and lake superior by friday morning as the low 
pushes into quebec and another 29.9 inch low develops over south 
dakota and nebraska. the high weakens to 30.3 inches as it moves to 
the quebec/ontario line saturday morning as the low shifts to the 
upper mississippi valley. by sunday morning, another 30.3 inch high 
will move over northwestern ontario. the high shifts to northeastern 
ontario monday morning.





lsz264-170800-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
357 pm edt wed sep 16 2026

.late this afternoon...southeast winds less than 10 knots. waves
calm to 2 feet. 
.tonight...southeast winds less than 10 knots becoming south 5 to
15 knots after midnight. a slight chance of showers through
midnight. waves calm to 2 feet. 
.thursday...west winds 5 to 15 knots veering northwest in the
afternoon, then backing west late. waves calm to 2 feet. 
.thursday night...north winds 5 to 15 knots veering northeast
late. waves building to 1 to 3 feet, then subsiding to 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...southeast 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. waves calm to 2 feet. 
.saturday night...northeast winds 5 to 15 knots increasing to
10 to 20 knots after midnight. waves calm to 2 feet. 
.sunday...northeast winds 15 to 25 knots becoming east 10 to
20 knots. waves building to 2 to 4 feet, then subsiding to calm
to 2 feet. 
.monday...east winds 10 to 20 knots becoming southeast 5 to
15 knots. waves subsiding to calm to 2 feet. 

$$

fzus63 kmqt 161958
glfls 
expires:202609170800;;562612

open lake forecast for lake superior
national weather service marquette mi
357 pm edt wed sep 16 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...

high pressure of 30.4 inches today weakens to 30.3 inches over 
quebec early thursday morning as 29.9 inch low pressure moves along 
the western hudson bay shoreline. meanwhile, 30.4 inch high pressure 
develops over north dakota and manitoba. this high moves over 
northern ontario and lake superior by friday morning as the low 
pushes into quebec and another 29.9 inch low develops over south 
dakota and nebraska. the high weakens to 30.3 inches as it moves to 
the quebec/ontario line saturday morning as the low shifts to the 
upper mississippi valley. by sunday morning, another 30.3 inch high 
will move over northwestern ontario. the high shifts to northeastern 
ontario monday morning.





lsz265-170800-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
357 pm edt wed sep 16 2026

.late this afternoon...east winds 5 to 15 knots. waves calm to
2 feet. 
.tonight...southeast winds 5 to 15 knots increasing to 10 to
20 knots after midnight, then veering south late. a slight chance
of showers after midnight. waves calm to 2 feet. 
.thursday...west winds 10 to 20 knots veering northwest late.
waves calm to 2 feet. 
.thursday night...northwest winds 10 to 20 knots veering north
after midnight, then becoming northeast 15 to 25 knots late.
waves building to 1 to 3 feet. 
.friday...east winds 10 to 20 knots. a slight chance of showers
by mid afternoon. waves subsiding to calm to 2 feet, then
building to 1 to 3 feet. 
.friday night...southeast winds 15 to 25 knots. a chance of
showers. waves subsiding to calm to 2 feet, then building to 1 to
3 feet. 
.saturday...southeast winds 15 to 25 knots backing east by mid
afternoon. waves subsiding to calm to 2 feet. 
.saturday night...northeast winds 10 to 20 knots. waves building
to 1 to 3 feet. 
.sunday...northeast winds 20 to 30 knots becoming east 15 to
25 knots. waves building to 2 to 4 feet, then subsiding to 1 to
3 feet. 
.monday...east winds 15 to 25 knots becoming southeast 10 to
20 knots. waves subsiding to calm to 2 feet. 

$$

fzus63 kmqt 161958
glfls 
expires:202609170800;;562609

open lake forecast for lake superior
national weather service marquette mi
357 pm edt wed sep 16 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...

high pressure of 30.4 inches today weakens to 30.3 inches over 
quebec early thursday morning as 29.9 inch low pressure moves along 
the western hudson bay shoreline. meanwhile, 30.4 inch high pressure 
develops over north dakota and manitoba. this high moves over 
northern ontario and lake superior by friday morning as the low 
pushes into quebec and another 29.9 inch low develops over south 
dakota and nebraska. the high weakens to 30.3 inches as it moves to 
the quebec/ontario line saturday morning as the low shifts to the 
upper mississippi valley. by sunday morning, another 30.3 inch high 
will move over northwestern ontario. the high shifts to northeastern 
ontario monday morning.





lsz162-170800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
357 pm edt wed sep 16 2026 /257 pm cdt wed sep 16 2026/

.late this afternoon...east winds 5 to 15 knots. waves calm to
2 feet. 
.tonight...northeast winds 5 to 15 knots becoming east less than
10 knots after midnight, then veering west late. a slight chance
of showers through 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 becoming northeast
10 to 20 knots after midnight, then veering east late. waves
building to 1 to 3 feet. 
.friday...east winds 10 to 20 knots increasing to 15 to 25 knots
by mid afternoon. a chance of showers. waves 1 to 3 feet. 
.friday night...east winds 15 to 25 knots. a chance of showers.
waves building to 2 to 4 feet. 
.saturday...east winds 20 to 30 knots backing northeast by mid
afternoon. waves building to 3 to 5 feet occasionally to 7 feet,
then subsiding to 1 to 3 feet. 
.saturday night...northeast winds 15 to 25 knots. waves subsiding
to calm to 2 feet, then building to 1 to 3 feet. 
.sunday...northeast gales to 35 knots becoming east 20 to
30 knots. waves building to 3 to 6 feet occasionally to 8 feet,
then subsiding to 1 to 3 feet. 
.monday...east winds 15 to 25 knots. waves subsiding to calm to
2 feet. 

$$

fzus63 kmqt 161958
glfls 
expires:202609170800;;562614

open lake forecast for lake superior
national weather service marquette mi
357 pm edt wed sep 16 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...

high pressure of 30.4 inches today weakens to 30.3 inches over 
quebec early thursday morning as 29.9 inch low pressure moves along 
the western hudson bay shoreline. meanwhile, 30.4 inch high pressure 
develops over north dakota and manitoba. this high moves over 
northern ontario and lake superior by friday morning as the low 
pushes into quebec and another 29.9 inch low develops over south 
dakota and nebraska. the high weakens to 30.3 inches as it moves to 
the quebec/ontario line saturday morning as the low shifts to the 
upper mississippi valley. by sunday morning, another 30.3 inch high 
will move over northwestern ontario. the high shifts to northeastern 
ontario monday morning.





lsz267-170800-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
357 pm edt wed sep 16 2026

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

$$

fzus63 kmqt 161958
glfls 
expires:202609170800;;562613

open lake forecast for lake superior
national weather service marquette mi
357 pm edt wed sep 16 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...

high pressure of 30.4 inches today weakens to 30.3 inches over 
quebec early thursday morning as 29.9 inch low pressure moves along 
the western hudson bay shoreline. meanwhile, 30.4 inch high pressure 
develops over north dakota and manitoba. this high moves over 
northern ontario and lake superior by friday morning as the low 
pushes into quebec and another 29.9 inch low develops over south 
dakota and nebraska. the high weakens to 30.3 inches as it moves to 
the quebec/ontario line saturday morning as the low shifts to the 
upper mississippi valley. by sunday morning, another 30.3 inch high 
will move over northwestern ontario. the high shifts to northeastern 
ontario monday morning.





lsz266-170800-
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-
357 pm edt wed sep 16 2026

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

$$

fzus63 kmqt 161958
glfls 
expires:202609170800;;562610

open lake forecast for lake superior
national weather service marquette mi
357 pm edt wed sep 16 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...

high pressure of 30.4 inches today weakens to 30.3 inches over 
quebec early thursday morning as 29.9 inch low pressure moves along 
the western hudson bay shoreline. meanwhile, 30.4 inch high pressure 
develops over north dakota and manitoba. this high moves over 
northern ontario and lake superior by friday morning as the low 
pushes into quebec and another 29.9 inch low develops over south 
dakota and nebraska. the high weakens to 30.3 inches as it moves to 
the quebec/ontario line saturday morning as the low shifts to the 
upper mississippi valley. by sunday morning, another 30.3 inch high 
will move over northwestern ontario. the high shifts to northeastern 
ontario monday morning.





lsz263-170800-
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-
357 pm edt wed sep 16 2026

.late this afternoon...east winds 5 to 15 knots. waves calm to
2 feet. 
.tonight...east winds 5 to 15 knots veering southeast after
midnight, then veering southwest late. a slight chance of showers
through 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 becoming northeast
10 to 20 knots after midnight, then becoming east 5 to 15 knots
late. waves building to 1 to 3 feet. 
.friday...east winds 5 to 15 knots increasing to 10 to 20 knots
by mid afternoon. a chance of showers by mid afternoon. waves
subsiding to calm to 2 feet. 
.friday night...east winds 10 to 20 knots diminishing to 5 to
15 knots after midnight. a chance of showers. waves building to
1 to 3 feet, then subsiding to calm to 2 feet. 
.saturday...east winds 10 to 20 knots becoming northeast 15 to
25 knots by mid afternoon. waves calm to 2 feet. 
.saturday night...northeast winds 15 to 25 knots. waves building
to 1 to 3 feet. 
.sunday...northeast gales to 35 knots becoming east 20 to
30 knots. waves building to 3 to 5 feet occasionally to 7 feet,
then subsiding to calm to 2 feet. 
.monday...east winds 15 to 25 knots. waves building to 1 to
3 feet, then subsiding to calm to 2 feet. 

$$