fzus61 kcle 210759
glfle 
expires:202608211415;;096567

open lake forecast for lake erie
national weather service cleveland oh
359 am edt fri aug 21 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 30.10 inches lingers over the region today. low 
pressure 29.90 inches moves into the great lakes region on 
saturday. the low will drag a cold front across the lake saturday 
night into sunday. high pressure 30.00 inches returns for the 
start of next week.


lez162>164-211415-
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-
359 am edt fri aug 21 2026

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

winds and waves higher in and near thunderstorms.

$$

fzus63 kdtx 210813
glfsc 
expires:202608211615;;097934

lake st clair forecast
national weather service detroit/pontiac mi
413 am edt fri aug 21 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, 30.00 inches, maintains influence
across the central and eastern great lakes today. the next low
pressure system then arrives saturday, dragging a cold front
across the area and increasing shower and thunderstorm chances.
post-frontal northwest flow leads to gusty winds sunday.


lcz460-211615-
lake st clair-
413 am edt fri aug 21 2026

.today...east winds 5 to 10 knots becoming southeast 10 to 15 knots
in the afternoon. mostly sunny. waves 2 feet or less.
.tonight...southeast winds 10 to 15 knots becoming south 5 to 10
knots after midnight. partly cloudy. a chance of light showers late
in the evening. waves 2 feet or less.
.saturday...southwest winds 5 to 10 knots. partly sunny. a chance of
light showers in the late morning and early afternoon. showers
likely and a chance of thunderstorms early in the afternoon. waves 2
feet or less.
.saturday night...northwest winds 10 to 15 knots increasing to 15 to
20 knots in the late evening and overnight. becoming mostly clear in
the late evening and overnight. light showers and a chance of
thunderstorms early in the evening...then a chance of light showers
by midnight. waves 2 feet or less.
.sunday...northwest winds 15 to 20 knots diminishing to 10 to 15
knots in the evening. mostly sunny in the morning...then mostly
clear with a chance of light showers in the afternoon and evening.
waves 1 to 3 feet.
.monday...northwest winds 10 to 15 knots. mostly clear. waves 2 feet
or less.
.tuesday...south winds 5 to 10 knots. mostly clear. waves 2 feet or
less.

$$

fzus63 kdtx 210808
glflh 
expires:202608211615;;097371

open lake forecast for lake huron
national weather service detroit/pontiac mi
408 am edt fri aug 21 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, 30.00 inches, maintains influence
across the central and eastern great lakes today. the next low
pressure system then arrives saturday, dragging a cold front
across the area and increasing shower and thunderstorm chances.
post-frontal northwest flow leads to gusty winds sunday.


lhz462>464-211615-
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-
408 am edt fri aug 21 2026

.today...southeast winds 5 to 10 knots. waves 2 feet or less. 
.tonight...southeast winds 10 to 15 knots. a chance of showers
after midnight. waves 1 to 3 feet. 
.saturday...south winds 10 to 15 knots decreasing to 5 to
10 knots in the late morning and afternoon. a chance of showers
in the morning...then showers and a chance of thunderstorms in
the afternoon. a chance of waterspouts. waves 1 to 3 feet. 
.saturday night...northwest winds 5 to 10 knots increasing to
15 to 20 knots in the late evening and overnight. showers likely.
waves 1 to 3 feet building to 4 to 6 feet in the late evening and
overnight. waves occasionally around 8 feet. 
.sunday...northwest winds 15 to 20 knots with gusts to around
30 knots increasing to 20 to 25 knots with gusts to around
30 knots late in the morning...then decreasing to 15 to 20 knots
with gusts to around 30 knots late in the afternoon. a chance of
waterspouts. showers likely in the morning. a chance of showers.
waves 6 to 9 feet. waves occasionally around 11 feet. 
.monday...northwest winds 15 to 20 knots decreasing to 5 to
10 knots. a chance of showers early in the morning. waves 4 to
6 feet subsiding to 1 to 3 feet by midnight. waves occasionally
around 8 feet. 
.tuesday...west winds 5 to 10 knots backing to the south early in
the evening...then increasing to 10 to 15 knots by midnight.
waves 2 feet or less. 


$$

fzus63 kmkx 210807
glflm 
expires:202608211545;;097270

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
307 am cdt fri aug 21 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...

south to southwest winds will increase today as a low pressure
trough of 29.8 inches approaches southern wisconsin from the 
minnesota arrowhead. thunderstorms are expected at times today
through tonight. the trough will cross lake michigan from north 
to south tonight and bring a wind shift to the northwest. then look
for gusty northerly winds to develop along a cold front that will
track from north to south down lake michigan saturday evening. a 
few thunderstorms are possible along this front. northerly winds
will persist through sunday as low pressure around 29.6 inches
tracks from lower michigan to ontario. variable winds are 
expected for monday and tuesday as high pressure of 30.1 inches 
crosses the upper great lakes.


lmz261-362-364-366-563-565-567-868-211545-
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-
307 am cdt fri aug 21 2026

sheboygan wi to pentwater mi north...

.today...south winds 10 to 20 kt increasing to 15 to 25 kt.
chance of showers and slight chance of thunderstorms this
morning, then slight chance of showers and thunderstorms this
afternoon. waves 3 to 5 ft. 
.tonight...south winds 15 to 25 kt becoming southwest 10 to 20 kt
late in the evening, then becoming west 10 to 15 kt after
midnight and becoming north 10 to 20 kt late. chance of showers 
and thunderstorms in the evening, then slight chance of showers 
and thunderstorms overnight. patchy fog overnight. waves 3 to 5 ft
subsiding to 2 to 4 ft. 
.saturday...north winds 10 to 20 kt increasing to 30 kt. chance
of showers in the afternoon. waves 2 to 4 ft. 
.saturday night...north winds to 30 kt diminishing to 15 to
25 kt. chance of showers in the evening. waves 4 to 6 ft
occasionally to 8 ft. 
.sunday...north winds to 30 kt. waves 4 to 6 ft occasionally to
8 ft. 
.sunday night...north gales to 35 kt diminishing to 10 to 20 kt.
waves 3 to 5 ft subsiding to 1 to 3 ft. 
.monday...northwest winds 10 to 20 kt increasing to 15 to 25 kt.
waves 1 to 2 ft. 
.tuesday...southwest winds 10 to 20 kt increasing to 15 to 25 kt.
waves 1 to 3 ft building to 2 to 4 ft.  

$$

fzus63 kmkx 210807
glflm 
expires:202608211545;;097271

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
307 am cdt fri aug 21 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...

south to southwest winds will increase today as a low pressure
trough of 29.8 inches approaches southern wisconsin from the 
minnesota arrowhead. thunderstorms are expected at times today
through tonight. the trough will cross lake michigan from north 
to south tonight and bring a wind shift to the northwest. then look
for gusty northerly winds to develop along a cold front that will
track from north to south down lake michigan saturday evening. a 
few thunderstorms are possible along this front. northerly winds
will persist through sunday as low pressure around 29.6 inches
tracks from lower michigan to ontario. variable winds are 
expected for monday and tuesday as high pressure of 30.1 inches 
crosses the upper great lakes.


lmz080-669-671-673-675-777-779-870-872-874-876-878-211545-
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-
307 am cdt fri aug 21 2026

sheboygan wi to pentwater mi south...

.today...south winds 10 to 20 kt. slight chance of showers this
morning, then chance of showers and slight chance of
thunderstorms this afternoon. waves 2 to 4 ft. 
.tonight...south winds 10 to 20 kt veering to northwest. slight
chance of showers and thunderstorms in the evening. waves 2 to
4 ft subsiding to 1 to 3 ft. 
.saturday...northwest winds 10 to 20 kt becoming north 15 to
25 kt. waves 3 to 5 ft. 
.saturday night...north winds 15 to 25 kt. waves 3 to 5 ft
building to 4 to 6 ft occasionally to 8 ft. 
.sunday...north winds to 30 kt. waves 4 to 7 ft occasionally to
9 ft. 
.sunday night...north winds 15 to 25 kt diminishing to 10 to
15 kt. waves 4 to 6 ft occasionally to 8 ft subsiding to 2 to
4 ft. 
.monday...northwest winds 10 to 20 kt becoming north. waves 1 to
2 ft. 
.tuesday...south winds 10 to 20 kt increasing to 15 to 25 kt.
waves 1 to 3 ft building to 2 to 4 ft.  

$$