fzus61 kcle 150738
glfle 
expires:202608151415;;220394

open lake forecast for lake erie
national weather service cleveland oh
338 am edt sat aug 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 will lift across the region tonight into sunday as 
low pressure 29.90 inches moves east across the upper great lakes.
this low will push a cold front across lake erie as it moves east
into southern quebec. high pressure 30.10 inches will build across
the region monday and tuesday before the next cold front 
approaches from the west on wednesday.


lez162>164-151415-
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-
the islands to vermilion oh beyond 5 nm off shoreline to us-
canadian border-
338 am edt sat aug 15 2026

.today...east winds 5 to 10 knots. a slight chance of showers
from late morning on. waves 1 foot or less. 
.tonight...east winds around 10 knots becoming south. showers
likely with a chance of thunderstorms in the evening, then a
chance of showers with a slight chance of thunderstorms after
midnight. waves 2 feet or less. 
.sunday...west winds 10 to 15 knots. 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. a
chance of showers and thunderstorms in the evening. waves 1 to
2 feet. 
.monday...north winds 5 to 15 knots becoming southwest less than
10 knots. waves 2 feet or less. 
.tuesday...west winds 5 to 15 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.

$$

fzus63 kdtx 150741
glfsc 
expires:202608151545;;220474

lake st clair forecast
national weather service detroit/pontiac mi
341 am edt sat aug 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...high pressure, 30.20 inches, currently centered over
northern lake huron will hold most of the day before sliding
southeast through the eastern lakes. the next low pressure system
will pass through the region tonight and sunday bringing the next
thunderstorm chances.


lcz460-151545-
lake st clair-
341 am edt sat aug 15 2026

.today...northeast winds 5 to 10 knots early in the morning becoming
light and variable...then becoming southeast 5 to 10 knots in the
afternoon. partly sunny in the morning becoming mostly cloudy. waves
2 feet or less.
.tonight...southeast winds 10 to 15 knots becoming south 5 to 10
knots early in the morning. mostly cloudy becoming partly cloudy. a
chance of light showers in the evening. waves 2 feet or less.
.sunday...southwest winds 5 to 10 knots veering to the west early in
the afternoon. partly sunny. a chance of showers and thunderstorms
early in the afternoon. waves 2 feet or less.
.sunday night...northwest winds 5 to 10 knots increasing to 10 to 15
knots in the late evening and overnight. partly cloudy. a chance of
showers and thunderstorms early in the evening. waves 2 feet or
less.
.monday...north winds 10 to 15 knots diminishing to 5 to 10 knots in
the afternoon...then veering to the northeast in the evening. mostly
clear in the morning then clearing. waves 2 feet or less.
.tuesday...southwest winds 10 to 15 knots. mostly clear. waves 2
feet or less.
.wednesday...northwest winds 15 to 20 knots. partly cloudy. showers
likely and a chance of thunderstorms. waves 2 feet or less.

$$

fzus63 kdtx 150741
glflh 
expires:202608151545;;220472

open lake forecast for lake huron
national weather service detroit/pontiac mi
341 am edt sat aug 15 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 huron will hold most of the day before sliding
southeast through the eastern lakes. the next low pressure system
will pass through the region tonight and sunday bringing the next
thunderstorm chances.


lhz462>464-151545-
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-
341 am edt sat aug 15 2026

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


$$

fzus63 kmkx 150813
glflm 
expires:202608151515;;222276

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
313 am cdt sat aug 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...

periods of showers and storms continue over the southern half of
lake michigan today and tonight as a warm front remains stalled 
south over il/in. low pressure around 29.8 inches over ks will 
track to the northeast this morning, then east toward southern 
lake michigan this evening. expect increasing southeasterly winds
and waves across the southern two thirds of lake michigan through
the daytime hours today as the low pressure tracks through the
region then winds diminish tonight as it closes in. a cold front 
will then sweep across the lake overnight into sunday morning, 
with chances for showers and weak storms. expect a northwest 
wind shift behind the cold front into sunday. beyond this system,
a broad ridge of high pressure around 30.1 inches will push into 
the great lakes early next week before another potential system 
moves through the region midweek. 


lmz261-362-364-366-563-565-567-868-151515-
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 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-
313 am cdt sat aug 15 2026

sheboygan wi to pentwater mi north...

.today...east winds 10 to 20 kt. waves 3 to 5 ft. 
.tonight...east winds 10 to 20 kt veering to southwest 10 to
15 kt. slight chance of showers and thunderstorms overnight.
waves 1 to 3 ft subsiding to 1 to 2 ft. 
.sunday...west winds 10 to 15 kt becoming northwest 10 to 20 kt
late in the morning, then increasing to 15 to 25 kt early in the
afternoon becoming north to 30 kt late. chance of showers in the
morning. waves 1 to 2 ft building to 2 to 4 ft. 
.sunday night...north winds to 30 kt diminishing to 10 to 20 kt
overnight. waves 2 to 4 ft. 
.monday...northwest winds 10 to 15 kt backing to southwest 10 to
20 kt. waves 1 to 3 ft. 
.monday night...southwest winds 10 to 15 kt increasing to 10 to
20 kt. waves 1 to 3 ft. 
.tuesday...southwest winds 15 to 25 kt increasing to 30 kt.
chance of showers. waves 2 to 4 ft. 
.wednesday...north winds 15 to 25 kt increasing to 30 kt. chance
of showers. waves 3 to 5 ft.  

$$

fzus63 kmkx 150813
glflm 
expires:202608151515;;222277

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
313 am cdt sat aug 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...

periods of showers and storms continue over the southern half of
lake michigan today and tonight as a warm front remains stalled 
south over il/in. low pressure around 29.8 inches over ks will 
track to the northeast this morning, then east toward southern 
lake michigan this evening. expect increasing southeasterly winds
and waves across the southern two thirds of lake michigan through
the daytime hours today as the low pressure tracks through the
region then winds diminish tonight as it closes in. a cold front 
will then sweep across the lake overnight into sunday morning, 
with chances for showers and weak storms. expect a northwest 
wind shift behind the cold front into sunday. beyond this system,
a broad ridge of high pressure around 30.1 inches will push into 
the great lakes early next week before another potential system 
moves through the region midweek. 


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-
313 am cdt sat aug 15 2026

sheboygan wi to pentwater mi south...

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

$$

fzus63 kmkx 150150
glflm 
expires:202608150930;;205496

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
850 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 showers and 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 29.8 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. 


lmz080-671-673-675-777-779-872-874-876-878-150930-
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-
850 pm cdt fri aug 14 2026

port washington wi to whitehall mi south...

.rest of tonight...north winds 10 to 20 kt veering to southeast.
slight chance of showers and thunderstorms overnight. waves 2 to
4 ft. 
.saturday...southeast winds 10 to 20 kt. chance of showers and
thunderstorms. waves 3 to 5 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 1 to 3 ft. 
.monday...north winds 10 to 15 kt increasing to 10 to 20 kt.
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 1 to 3 ft. 
.wednesday...northwest winds 15 to 25 kt increasing to 30 kt.
chance of showers. waves 3 to 5 ft.  

$$

fzus63 kmkx 150150
glflm 
expires:202608150930;;205495

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
850 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 showers and 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 29.8 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. 


lmz366-565-567-669-868-870-150930-
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-
850 pm cdt fri aug 14 2026

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

.rest of tonight...northeast winds 10 to 20 kt becoming east.
slight chance of showers overnight. waves 3 to 5 ft. 
.saturday...southeast winds 10 to 20 kt. slight chance of
showers. waves 3 to 5 ft. 
.saturday night...southeast winds 10 to 20 kt veering to west
10 to 15 kt. chance of showers overnight. waves 2 to 4 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 1 to 3 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 1 to 3 ft. 
.wednesday...northwest winds 15 to 25 kt becoming north to 30 kt.
chance of showers. waves 3 to 5 ft.  

$$