fzus61 kbuf 142002
glflo 
expires:202608150300;;191812

open lake forecast for lake ontario
national weather service buffalo ny
402 pm edt fri aug 14 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 high pressure ridge averaging 30.2 inches builds from the canadian 
prairies before settling over lake ontario and vicinity by saturday. 
the ridge begins to exit eastward saturday night and a low of 29.7 
inches should move generally east-southeastward from near the 
northern great lakes to near the gulf of maine saturday night 
through monday. this low track should allow a warm front to sweep 
northeastward across lake ontario saturday night and especially on 
sunday before a cold front sweeps eastward across the lake sunday 
evening through sunday night. behind the cold front, a high pressure 
ridge averaging 30.0 inches should build slowly from the upper 
midwest through tuesday. a 29.7 inch low is expected to move across 
the central great lakes wednesday and move across or near lake 
ontario wednesday night.


loz063>065-150300-
lake ontario open waters from hamlin beach to the saint lawrence
river-
402 pm edt fri aug 14 2026

.tonight...northeast winds less than 10 knots becoming east.
waves 1 foot or less. 
.saturday...east winds 5 to 10 knots becoming northeast. waves
1 foot or less. 
.saturday night...northeast winds 5 to 10 knots becoming
southeast. waves 2 feet or less. 
.sunday...southeast winds 10 to 15 knots. a chance of showers in
the morning, then showers with a chance of thunderstorms in the
afternoon. waves 2 feet or less. 
.sunday night...south winds 10 to 15 knots becoming northwest.
showers with a chance of thunderstorms in the evening, then
showers likely overnight. waves 1 to 2 feet. 
.monday...northwest winds 5 to 15 knots. waves 2 feet or less. 
.tuesday...west winds 10 knots or less becoming southwest 10 to
15 knots. waves 2 feet or less. 
.wednesday...southwest winds 5 to 15 knots becoming west 15 to
20 knots. a chance of showers during the day, then showers likely
wednesday night. waves 1 to 3 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kbuf 142002
glflo 
expires:202608150300;;191811

open lake forecast for lake ontario
national weather service buffalo ny
402 pm edt fri aug 14 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 high pressure ridge averaging 30.2 inches builds from the canadian 
prairies before settling over lake ontario and vicinity by saturday. 
the ridge begins to exit eastward saturday night and a low of 29.7 
inches should move generally east-southeastward from near the 
northern great lakes to near the gulf of maine saturday night 
through monday. this low track should allow a warm front to sweep 
northeastward across lake ontario saturday night and especially on 
sunday before a cold front sweeps eastward across the lake sunday 
evening through sunday night. behind the cold front, a high pressure 
ridge averaging 30.0 inches should build slowly from the upper 
midwest through tuesday. a 29.7 inch low is expected to move across 
the central great lakes wednesday and move across or near lake 
ontario wednesday night.


loz062-150300-
lake ontario open waters from the niagara river to hamlin beach-
402 pm edt fri aug 14 2026

.tonight...east winds 10 knots or less. waves 1 foot or less. 
.saturday...east winds 5 to 15 knots. waves 2 feet or less. 
.saturday night...east winds 10 to 15 knots becoming southeast.
waves 1 to 2 feet. 
.sunday...southeast winds around 10 knots becoming east. a chance
of showers in the morning, then showers with a chance of
thunderstorms in the afternoon. waves 1 to 2 feet. 
.sunday night...north winds around 10 knots becoming northwest.
showers with a chance of thunderstorms in the evening. waves 1 to
2 feet. 
.monday...northwest winds 5 to 10 knots. waves 2 feet or less. 
.tuesday...west winds 10 knots or less becoming southwest. waves
2 feet or less. 
.wednesday...southwest winds 5 to 15 knots becoming west. a
chance of showers during the day, then showers likely wednesday
night. waves 2 feet or less building to 2 to 3 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 142002
glfle 
expires:202608150215;;191779

open lake forecast for lake erie
national weather service cleveland oh
402 pm edt fri aug 14 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...
high pressure of 30.30 inches will build into the upper great 
lakes tonight through friday, before departing east on saturday. 
low pressure of 29.90 inches will move across the upper great 
lakes sunday, with a warm front north moving across lake erie in 
the morning and a cold front overnight sunday. high pressure 
30.00 inches returns monday and tuesday.


lez162>164-150215-
detroit river lt. to maumee bay oh to reno beach oh beyond 5nm
offshoreline to us-canadian border-
reno beach to the islands oh beyond 5nm off shoreline to us-
canadian border-
the islands to vermilion oh beyond 5 nm off shoreline to us-
canadian border-
402 pm edt fri aug 14 2026

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

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 142002
glfle 
expires:202608150215;;191781

open lake forecast for lake erie
national weather service cleveland oh
402 pm edt fri aug 14 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...
high pressure of 30.30 inches will build into the upper great 
lakes tonight through friday, before departing east on saturday. 
low pressure of 29.90 inches will move across the upper great 
lakes sunday, with a warm front north moving across lake erie in 
the morning and a cold front overnight sunday. high pressure 
30.00 inches returns monday and tuesday.


lez061-168-169-150215-
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-
402 pm edt fri aug 14 2026

.tonight...northeast winds less than 10 knots becoming east.
waves 1 foot or less. 
.saturday...east winds 10 knots or less becoming northeast. waves
1 foot or less. 
.saturday night...east winds 5 to 10 knots becoming southeast. a
chance of showers overnight. waves 2 feet or less. 
.sunday...south winds 10 to 15 knots becoming west 15 to
20 knots. a chance of showers in the morning, then showers with a
chance of thunderstorms in the afternoon. waves 1 to 3 feet
building to 2 to 4 feet. 
.sunday night...west winds 15 to 20 knots becoming northwest
10 to 15 knots. showers with a chance of thunderstorms in the
evening, then a chance of showers overnight. waves 2 to 3 feet. 
.monday...northwest winds 5 to 10 knots. waves 1 to 3 feet. 
.tuesday...west winds 10 knots or less becoming south. waves
2 feet or less. 
.wednesday...southwest winds 10 to 15 knots becoming northwest. a
chance of showers during the day, then showers likely wednesday
night. waves 1 to 3 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 142002
glfle 
expires:202608150215;;191780

open lake forecast for lake erie
national weather service cleveland oh
402 pm edt fri aug 14 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...
high pressure of 30.30 inches will build into the upper great 
lakes tonight through friday, before departing east on saturday. 
low pressure of 29.90 inches will move across the upper great 
lakes sunday, with a warm front north moving across lake erie in 
the morning and a cold front overnight sunday. high pressure 
30.00 inches returns monday and tuesday.


lez165>167-150215-
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-
402 pm edt fri aug 14 2026

.tonight...northeast winds 5 to 10 knots becoming east. waves
1 foot or less. 
.saturday...east winds 10 knots or less. waves 1 foot or less. 
.saturday night...east winds 10 to 15 knots becoming south. a
chance of showers and thunderstorms in the evening, then showers
likely with a chance of thunderstorms overnight. waves 1 to
2 feet. 
.sunday...southwest winds 10 to 15 knots becoming west 15 to
20 knots. a chance of showers in the morning, then showers with a
chance of thunderstorms in the afternoon. waves 1 to 3 feet
building to 2 to 4 feet. 
.sunday night...west winds 15 to 20 knots becoming northwest
10 to 15 knots. showers with a chance of thunderstorms in the
evening, then a chance of showers overnight. waves 2 to 3 feet. 
.monday...northwest winds 5 to 10 knots. waves 1 to 3 feet. 
.tuesday...west winds 10 knots or less becoming south 10 to
15 knots. waves 2 feet or less. 
.wednesday...southwest winds 10 to 15 knots becoming northwest
15 to 20 knots. a chance of showers and thunderstorms during the
day, then a chance of showers wednesday night. waves 1 to 3 feet.

winds and waves higher in and near thunderstorms.

$$

fzus63 kdtx 141944
glfsc 
expires:202608150345;;191278

lake st clair forecast
national weather service detroit/pontiac mi
344 pm edt fri aug 14 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...high pressure, 30.20 inches, currently centered over
northern lake superior will dominate the region through saturday
while sliding southeast through the eastern lakes. the next low
pressure system will pass through the region on saturday night
bringing the next thunderstorm chances.


lcz460-150345-
lake st clair-
344 pm edt fri aug 14 2026

.tonight...northeast winds 10 to 15 knots diminishing to 5 to 10
knots after midnight. partly cloudy. waves 2 feet or less.
.saturday...east winds 5 to 10 knots veering to the southeast in the
afternoon. partly sunny. waves 2 feet or less.
.saturday night...southeast winds 10 to 15 knots. mostly cloudy.
showers likely and a chance of thunderstorms. waves 2 feet or less.
.sunday...southwest winds 10 to 15 knots veering to the west early
in the afternoon. mostly cloudy. showers likely. a chance of
thunderstorms early in the afternoon. waves 2 feet or less.
.sunday night...northwest winds 10 to 15 knots. partly cloudy. light
showers likely and a chance of thunderstorms early in the evening.
waves 2 feet or less.
.monday...northwest winds 10 to 15 knots becoming north 5 to 10
knots in the afternoon...then veering to the northeast in the
evening. mostly sunny becoming clear. waves 2 feet or less.
.tuesday...southwest winds 5 to 10 knots. mostly clear. waves 2 feet
or less.
.wednesday...northwest winds 10 to 15 knots. partly cloudy. showers
likely and a chance of thunderstorms. waves 2 feet or less.

$$

fzus63 kdtx 141943
glflh 
expires:202608150345;;191270

open lake forecast for lake huron
national weather service detroit/pontiac mi
343 pm edt fri aug 14 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...high pressure, 30.20 inches, currently centered over
northern lake superior will dominate the region through saturday 
while sliding southeast through the eastern lakes. the next low 
pressure system will pass through the region on saturday night 
bringing the next thunderstorm chances.


lhz462>464-150345-
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-
343 pm edt fri aug 14 2026

.tonight...northeast winds 5 to 10 knots. waves 1 to 3 feet. 
.saturday...east winds 5 to 10 knots in the morning becoming
light and variable...then becoming east 5 to 10 knots late in the
afternoon. waves 2 feet or less. 
.saturday night...east winds 5 to 10 knots becoming southeast
10 to 15 knots in the late evening and overnight. a chance of
showers after midnight. waves 1 to 3 feet. 
.sunday...south winds 10 to 15 knots becoming west 5 to 10 knots
early in the afternoon. a chance of showers in the morning...then
showers likely in the afternoon. waves 1 to 3 feet. 
.sunday night...northwest winds 5 to 10 knots increasing to 10 to
15 knots in the late evening and overnight. waves 1 to 3 feet
building to 3 to 5 feet after midnight. 
.monday...northwest winds 10 to 15 knots becoming light and
variable. waves 2 to 4 feet subsiding to 1 to 3 feet late in the
afternoon. 
.tuesday...southwest winds 5 to 10 knots becoming south 10 to
15 knots. a chance of showers by midnight. waves 2 feet or less. 
.wednesday...southwest winds 5 to 10 knots increasing to 10 to
15 knots in the late morning and early afternoon...then veering
to the northwest . showers likely. waves 1 to 3 feet. 


$$

fzus63 kdtx 141943
glflh 
expires:202608150345;;191269

open lake forecast for lake huron
national weather service detroit/pontiac mi
343 pm edt fri aug 14 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...high pressure, 30.20 inches, currently centered over
northern lake superior will dominate the region through saturday 
while sliding southeast through the eastern lakes. the next low 
pressure system will pass through the region on saturday night 
bringing the next thunderstorm chances.


lhz362-363-150345-
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-
343 pm edt fri aug 14 2026

.tonight...light and variable winds. waves 2 feet or less. 
.saturday...east winds 5 to 10 knots. waves 2 feet or less. 
.saturday night...east winds 5 to 10 knots becoming southeast
10 to 15 knots in the late evening and overnight. a chance of
showers after midnight. waves 1 to 3 feet. 
.sunday...southeast winds 10 to 15 knots becoming south 5 to
10 knots in the late morning and early afternoon...then veering
to the southwest early in the afternoon. a chance of showers.
waves 1 to 3 feet. 
.sunday night...northwest winds 10 to 15 knots increasing to
15 to 20 knots by midnight...then decreasing to 10 to 15 knots
after midnight. waves 3 to 5 feet. 
.monday...northwest winds 10 to 15 knots decreasing to 5 to
10 knots late in the morning...then becoming light and variable
late in the afternoon becoming west 5 to 10 knots late in the
evening. waves 2 to 4 feet subsiding to 2 feet or less late in
the afternoon. 
.tuesday...southwest winds 5 to 10 knots becoming south 10 to
15 knots early in the evening...then becoming southwest 5 to
10 knots by midnight. a chance of showers by midnight. waves
2 feet or less. 
.wednesday...west winds 5 to 10 knots becoming northwest 10 to
15 knots. a chance of showers. waves 1 to 3 feet. 


$$

fzus63 kdtx 141943
glflh 
expires:202608150345;;191268

open lake forecast for lake huron
national weather service detroit/pontiac mi
343 pm edt fri aug 14 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...high pressure, 30.20 inches, currently centered over
northern lake superior will dominate the region through saturday 
while sliding southeast through the eastern lakes. the next low 
pressure system will pass through the region on saturday night 
bringing the next thunderstorm chances.


lhz361-150345-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
343 pm edt fri aug 14 2026

.tonight...light and variable winds. waves 2 feet or less. 
.saturday...light and variable winds becoming east 10 to
15 knots. waves 2 feet or less building to 2 to 4 feet late in
the afternoon. 
.saturday night...southeast winds 10 to 15 knots. a chance of
showers after midnight. waves 3 to 5 feet subsiding to 1 to
3 feet after midnight. 
.sunday...southeast winds 5 to 10 knots becoming west 10 to
15 knots early in the afternoon. a chance of showers in the
morning. waves 1 to 3 feet. 
.sunday night...northwest winds 15 to 20 knots decreasing to
10 to 15 knots after midnight. waves 2 to 4 feet. 
.monday...northwest winds 5 to 10 knots backing to the west late
in the evening. waves 1 to 3 feet. 
.tuesday...southwest winds 5 to 10 knots veering to the west by
midnight. a chance of showers early in the evening. rain showers
likely by midnight. waves 1 to 3 feet. 
.wednesday...northwest winds 5 to 10 knots increasing to 10 to
15 knots. showers likely early in the morning...then a chance of
showers until early evening. waves 1 to 3 feet. 


$$

fzus63 kmkx 141943
glflm 
expires:202608150315;;191274

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
243 pm cdt fri aug 14 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...

periods of storms are expected to cross the southern half of lake 
michigan through sunday as a front remains stalled south over 
illinois and indiana. low pressure of 29.7 inches over kansas will 
track to the northeast and east toward southern lake michigan 
tonight into saturday. this low should help to bump up winds and 
waves across the southern two thirds of lake michigan into saturday. 
beyond this system, a broad ridge of high pressure of 30.1 inches 
will push into the great lakes early next week before another 
potential front moves through the region midweek. 


lmz366-565-567-669-868-870-150315-
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 sheboygan to port washington wi 5 nm offshore
to mid lake-
lake michigan from pentwater to manistee mi 5 nm offshore to mid
lake-
lake michigan from whitehall to pentwater mi 5 nm offshore to mid
lake-
243 pm cdt fri aug 14 2026

sturgeon bay wi to point betsie mi south to port washington wi to
whitehall mi...

.tonight...northeast winds 15 to 25 kt becoming east 10 to 20 kt.
slight chance of showers overnight. waves 3 to 5 ft. 
.saturday...southeast winds 10 to 20 kt. slight chance of showers
and thunderstorms in the morning, then slight chance of showers
in the afternoon. waves 4 to 6 ft occasionally to 8 ft. 
.saturday night...southeast winds 10 to 20 kt veering to west
10 to 15 kt. chance of showers overnight. waves 3 to 5 ft
subsiding to 1 to 3 ft. 
.sunday...west winds 10 to 20 kt becoming northwest. waves 1 to
3 ft. 
.sunday night...north winds 10 to 20 kt. waves 2 to 4 ft. 
.monday...north winds 10 to 20 kt becoming west. waves 1 to 3 ft.
.monday night...south winds 10 to 15 kt becoming southwest. waves
1 to 2 ft. 
.tuesday...southwest winds 10 to 20 kt. waves 2 to 4 ft. 
.wednesday...northwest winds 15 to 25 kt becoming north to 30 kt.
chance of showers. waves 3 to 5 ft.  

$$

fzus63 kmkx 141943
glflm 
expires:202608150315;;191273

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
243 pm cdt fri aug 14 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...

periods of storms are expected to cross the southern half of lake 
michigan through sunday as a front remains stalled south over 
illinois and indiana. low pressure of 29.7 inches over kansas will 
track to the northeast and east toward southern lake michigan 
tonight into saturday. this low should help to bump up winds and 
waves across the southern two thirds of lake michigan into saturday. 
beyond this system, a broad ridge of high pressure of 30.1 inches 
will push into the great lakes early next week before another 
potential front moves through the region midweek. 


lmz261-362-364-563-150315-
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-
243 pm cdt fri aug 14 2026

sturgeon bay wi to point betsie mi north...

.tonight...northeast winds 10 to 15 kt becoming east. waves 1 to
3 ft. 
.saturday...east winds 10 to 15 kt increasing to 10 to 20 kt.
waves 1 to 3 ft. 
.saturday night...east winds 10 to 20 kt veering to southwest
10 to 15 kt. chance of showers overnight. waves 1 to 3 ft. 
.sunday...west winds 10 to 20 kt becoming northwest 15 to 25 kt.
chance of showers in the morning. waves 1 to 2 ft building to
1 to 3 ft. 
.sunday night...north winds 15 to 25 kt diminishing to 10 to
20 kt. waves 2 to 4 ft. 
.monday...northwest winds 10 to 15 kt backing to southwest 10 to
20 kt. waves 1 to 2 ft. 
.monday night...southwest winds 10 to 15 kt increasing to 10 to
20 kt. waves 1 to 2 ft. 
.tuesday...southwest winds 15 to 25 kt increasing to 30 kt. waves
2 to 4 ft. 
.wednesday...north winds 15 to 25 kt becoming northwest to 30 kt.
chance of showers. waves 1 to 3 ft.  

$$

fzus63 kmkx 141943
glflm 
expires:202608150315;;191275

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
243 pm cdt fri aug 14 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...

periods of storms are expected to cross the southern half of lake 
michigan through sunday as a front remains stalled south over 
illinois and indiana. low pressure of 29.7 inches over kansas will 
track to the northeast and east toward southern lake michigan 
tonight into saturday. this low should help to bump up winds and 
waves across the southern two thirds of lake michigan into saturday. 
beyond this system, a broad ridge of high pressure of 30.1 inches 
will push into the great lakes early next week before another 
potential front moves through the region midweek. 


lmz080-671-673-675-777-779-872-874-876-878-150315-
lake michigan from michigan city in to st. joseph mi 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 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-
243 pm cdt fri aug 14 2026

port washington wi to whitehall mi south...

.tonight...north winds 10 to 20 kt veering to southeast. slight
chance of showers and thunderstorms overnight. waves 3 to 5 ft. 
.saturday...southeast winds 10 to 20 kt. chance of showers and
thunderstorms in the morning, then chance of showers and slight
chance of thunderstorms in the afternoon. waves 4 to 6 ft
occasionally to 8 ft. 
.saturday night...southeast winds 10 to 15 kt veering to west.
chance of showers overnight. waves 2 to 4 ft subsiding to 1 to
3 ft. 
.sunday...west winds 10 to 20 kt becoming northwest. chance of
showers. waves 1 to 3 ft. 
.sunday night...north winds 10 to 20 kt. waves 2 to 4 ft. 
.monday...north winds 10 to 15 kt increasing to 10 to 20 kt.
waves 2 to 4 ft. 
.monday night...south winds 10 to 15 kt becoming southwest. waves
1 to 2 ft. 
.tuesday...southwest winds 10 to 20 kt. waves 1 to 3 ft. 
.wednesday...northwest winds 15 to 25 kt increasing to 30 kt.
chance of showers. waves 3 to 5 ft.  

$$

fzus63 kmqt 142001
glfls 
expires:202608150800;;191728

open lake forecast for lake superior
national weather service marquette mi
401 pm edt fri aug 14 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...

30.2 high pressure over lake superior this afternoon and early this 
evening gives way to a 29.9 inch low saturday night as the 
aforementioned high moves east towards new england. this low deepens 
to 29.8 inches as it reaches the lower great lakes by sunday 
afternoon. sunday night into monday, a 30.1 inch high over the 
plains weakens to 30.0 inches as it slides generally south of lake 
superior. by tuesday, this high becomes centered south of the great 
lakes as a 29.4 inch low over hudson bay extends a 29.8 inch trough 
over lake superior. a second 29.7 inch low moves through the great 
lakes region into southern ontario on wednesday. 




lsz267-150800-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
401 pm edt fri aug 14 2026

.late this afternoon...northwest winds 5 to 15 knots. waves calm
to 2 feet. 
.tonight...north winds 5 to 15 knots veering east late. waves
calm to 2 feet. 
.saturday...east winds 5 to 15 knots increasing to 10 to 20 knots
in the afternoon. waves calm to 2 feet. 
.saturday night...southeast winds 10 to 20 knots. a chance of
showers through midnight, then showers likely and a slight chance
of thunderstorms after midnight. waves building to 1 to 3 feet,
then subsiding to calm to 2 feet. 
.sunday...west winds 10 to 20 knots becoming northwest 15 to
25 knots by mid afternoon. a slight chance of showers through
early afternoon. waves building to 3 to 5 feet occasionally to
7 feet. 
.sunday night...northwest winds 15 to 25 knots diminishing to
5 to 15 knots after midnight. waves subsiding to calm to 2 feet. 
.monday...west winds 5 to 15 knots. waves calm to 2 feet. 
.monday night...south winds 5 to 15 knots increasing to 10 to
20 knots after midnight. waves calm to 2 feet. 
.tuesday...west winds 5 to 15 knots veering northwest. a chance
of showers. waves calm to 2 feet. 
.wednesday...north winds 10 to 20 knots backing northwest. a
chance of showers. waves building to 1 to 3 feet, then subsiding
to calm to 2 feet. 

$$

fzus63 kmqt 142001
glfls 
expires:202608150800;;191723

open lake forecast for lake superior
national weather service marquette mi
401 pm edt fri aug 14 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...

30.2 high pressure over lake superior this afternoon and early this 
evening gives way to a 29.9 inch low saturday night as the 
aforementioned high moves east towards new england. this low deepens 
to 29.8 inches as it reaches the lower great lakes by sunday 
afternoon. sunday night into monday, a 30.1 inch high over the 
plains weakens to 30.0 inches as it slides generally south of lake 
superior. by tuesday, this high becomes centered south of the great 
lakes as a 29.4 inch low over hudson bay extends a 29.8 inch trough 
over lake superior. a second 29.7 inch low moves through the great 
lakes region into southern ontario on wednesday. 




lsz162-150800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
401 pm edt fri aug 14 2026 /301 pm cdt fri aug 14 2026/

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

$$

fzus63 kmqt 142001
glfls 
expires:202608150800;;191724

open lake forecast for lake superior
national weather service marquette mi
401 pm edt fri aug 14 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...

30.2 high pressure over lake superior this afternoon and early this 
evening gives way to a 29.9 inch low saturday night as the 
aforementioned high moves east towards new england. this low deepens 
to 29.8 inches as it reaches the lower great lakes by sunday 
afternoon. sunday night into monday, a 30.1 inch high over the 
plains weakens to 30.0 inches as it slides generally south of lake 
superior. by tuesday, this high becomes centered south of the great 
lakes as a 29.4 inch low over hudson bay extends a 29.8 inch trough 
over lake superior. a second 29.7 inch low moves through the great 
lakes region into southern ontario on wednesday. 




lsz263-150800-
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 fri aug 14 2026

.late this afternoon...east winds 15 to 25 knots. waves calm to
2 feet building to 1 to 3 feet. 
.tonight...east winds 15 to 25 knots diminishing to 5 to 15 knots
after midnight. waves subsiding to calm to 2 feet. 
.saturday...east winds 5 to 15 knots. a chance of showers by mid
afternoon. waves calm to 2 feet. 
.saturday night...east winds 5 to 15 knots backing northwest
after midnight, then backing west late. a chance of showers and a
slight chance of thunderstorms through midnight. waves calm to
2 feet. 
.sunday...west winds 10 to 20 knots. a slight chance of showers
through early afternoon. waves calm to 2 feet. 
.sunday night...west winds 5 to 15 knots. waves calm to 2 feet. 
.monday...west winds 5 to 15 knots becoming southwest 15 to
25 knots by mid afternoon. waves building to 1 to 3 feet. 
.monday night...southwest winds 10 to 20 knots veering west after
midnight. a chance of showers. waves subsiding to calm to 2 feet.
.tuesday...west winds 5 to 15 knots veering north. a chance of
showers. waves calm to 2 feet. 
.wednesday...north winds 5 to 15 knots backing west. waves calm
to 2 feet. 

$$

fzus63 kmqt 142001
glfls 
expires:202608150800;;191725

open lake forecast for lake superior
national weather service marquette mi
401 pm edt fri aug 14 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...

30.2 high pressure over lake superior this afternoon and early this 
evening gives way to a 29.9 inch low saturday night as the 
aforementioned high moves east towards new england. this low deepens 
to 29.8 inches as it reaches the lower great lakes by sunday 
afternoon. sunday night into monday, a 30.1 inch high over the 
plains weakens to 30.0 inches as it slides generally south of lake 
superior. by tuesday, this high becomes centered south of the great 
lakes as a 29.4 inch low over hudson bay extends a 29.8 inch trough 
over lake superior. a second 29.7 inch low moves through the great 
lakes region into southern ontario on wednesday. 




lsz264-150800-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
401 pm edt fri aug 14 2026

.late this afternoon...east winds 5 to 15 knots. waves calm to
2 feet. 
.tonight...southeast winds 5 to 15 knots backing east after
midnight. waves calm to 2 feet. 
.saturday...east winds 5 to 15 knots increasing to 10 to 20 knots
late. a chance of showers by mid afternoon. waves calm to 2 feet.
.saturday night...southeast winds 5 to 15 knots veering northwest
late. showers likely through midnight, then a slight chance of
showers after midnight. waves calm to 2 feet. 
.sunday...northwest winds 10 to 20 knots backing west by mid
afternoon. waves calm to 2 feet. 
.sunday night...west winds 5 to 15 knots. waves calm to 2 feet. 
.monday...west winds 5 to 15 knots becoming southwest 10 to
20 knots by mid afternoon. waves calm to 2 feet. 
.monday night...southwest winds 10 to 20 knots becoming west 5 to
15 knots after midnight. waves building to 1 to 3 feet, then
subsiding to calm to 2 feet. 
.tuesday...west winds 5 to 15 knots veering north. a chance of
showers. waves calm to 2 feet. 
.wednesday...north winds 5 to 15 knots backing west. waves calm
to 2 feet. 

$$

fzus63 kmqt 142001
glfls 
expires:202608150800;;191726

open lake forecast for lake superior
national weather service marquette mi
401 pm edt fri aug 14 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...

30.2 high pressure over lake superior this afternoon and early this 
evening gives way to a 29.9 inch low saturday night as the 
aforementioned high moves east towards new england. this low deepens 
to 29.8 inches as it reaches the lower great lakes by sunday 
afternoon. sunday night into monday, a 30.1 inch high over the 
plains weakens to 30.0 inches as it slides generally south of lake 
superior. by tuesday, this high becomes centered south of the great 
lakes as a 29.4 inch low over hudson bay extends a 29.8 inch trough 
over lake superior. a second 29.7 inch low moves through the great 
lakes region into southern ontario on wednesday. 




lsz265-150800-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
401 pm edt fri aug 14 2026

.late this afternoon...east winds 5 to 15 knots. waves calm to
2 feet. 
.tonight...east winds 5 to 15 knots veering southeast late. waves
calm to 2 feet. 
.saturday...southeast winds 10 to 20 knots backing east in the
afternoon, then increasing to 15 to 25 knots late. a slight
chance of showers by mid afternoon. waves building to 1 to
3 feet. 
.saturday night...southeast winds 15 to 25 knots diminishing to
10 to 20 knots after midnight, then veering west late. a slight
chance of thunderstorms through midnight. a chance of showers.
waves subsiding to calm to 2 feet. 
.sunday...northwest winds 20 to 30 knots. waves building to 3 to
5 feet occasionally to 7 feet, then subsiding to 1 to 3 feet. 
.sunday night...west winds 10 to 20 knots. waves subsiding to
calm to 2 feet. 
.monday...west winds 10 to 20 knots becoming southwest 5 to
15 knots by mid afternoon. waves calm to 2 feet. 
.monday night...south winds 5 to 15 knots becoming southwest
15 to 25 knots after midnight. waves calm to 2 feet. 
.tuesday...west winds 10 to 20 knots veering north. a chance of
showers. waves calm to 2 feet. 
.wednesday...north winds 10 to 20 knots backing northwest. a
chance of showers. waves building to 1 to 3 feet, then subsiding
to calm to 2 feet. 

$$

fzus63 kmqt 142001
glfls 
expires:202608150800;;191727

open lake forecast for lake superior
national weather service marquette mi
401 pm edt fri aug 14 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...

30.2 high pressure over lake superior this afternoon and early this 
evening gives way to a 29.9 inch low saturday night as the 
aforementioned high moves east towards new england. this low deepens 
to 29.8 inches as it reaches the lower great lakes by sunday 
afternoon. sunday night into monday, a 30.1 inch high over the 
plains weakens to 30.0 inches as it slides generally south of lake 
superior. by tuesday, this high becomes centered south of the great 
lakes as a 29.4 inch low over hudson bay extends a 29.8 inch trough 
over lake superior. a second 29.7 inch low moves through the great 
lakes region into southern ontario on wednesday. 




lsz266-150800-
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 fri aug 14 2026

.late this afternoon...north winds 5 to 15 knots. waves calm to
2 feet. 
.tonight...north winds less than 10 knots becoming east 5 to
15 knots after midnight. waves calm to 2 feet. 
.saturday...east winds 5 to 15 knots increasing to 10 to 20 knots
in the afternoon. a slight chance of showers by mid afternoon.
waves building to 1 to 3 feet. 
.saturday night...southeast winds 15 to 25 knots diminishing to
10 to 20 knots after midnight, then veering south late. a chance
of showers and a slight chance of thunderstorms. waves subsiding
to calm to 2 feet. 
.sunday...northwest winds 20 to 30 knots. waves building to 3 to
6 feet occasionally to 8 feet. 
.sunday night...northwest winds 10 to 20 knots. waves subsiding
to calm to 2 feet. 
.monday...west winds 5 to 15 knots backing southwest by mid
afternoon. waves calm to 2 feet. 
.monday night...south winds 10 to 20 knots becoming southwest
15 to 25 knots after midnight. waves calm to 2 feet. 
.tuesday...west winds 10 to 20 knots becoming north 5 to
15 knots. a chance of showers. waves calm to 2 feet. 
.wednesday...north winds 10 to 20 knots backing northwest. a
chance of showers. waves building to 1 to 3 feet, then subsiding
to calm to 2 feet. 

$$