fzus61 kcle 181940
glfle 
expires:202608190215;;952362

open lake forecast for lake erie
national weather service cleveland oh
340 pm edt tue aug 18 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 30.00 inches drifts to the east through wednesday
morning. a cold front will sweep across lake erie throughout the
day on wednesday with high pressure 30.10 inches building into the
region thursday through friday. low pressure 29.90 inches moves
into the great lake on saturday with a cold front passing through
late saturday into sunday.  


lez162>164-190215-
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-
340 pm edt tue aug 18 2026

.tonight...southwest winds 5 to 15 knots. a chance of showers
after midnight. waves 2 feet or less. 
.wednesday...west winds 5 to 15 knots becoming southwest. a
chance of showers in the morning, then a chance of showers with a
slight chance of thunderstorms in the afternoon. waves 2 feet or
less. 
.wednesday night...south winds 5 to 10 knots becoming northeast.
a chance of showers in the evening. waves 1 foot or less. 
.thursday...northeast winds 5 to 10 knots becoming east. waves
1 foot or less. 
.thursday night...east winds 5 to 10 knots becoming south. waves
1 foot or less. 
.friday...south winds 10 knots or less. waves 1 foot or less. 
.saturday...southwest winds 10 to 15 knots becoming northwest.
showers likely with a chance of thunderstorms during the day,
then a chance of showers and thunderstorms saturday night. waves
2 feet or less. 
.sunday...northwest winds 10 to 15 knots becoming north. waves
1 to 2 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus63 kdtx 181935
glfsc 
expires:202608190345;;952173

lake st clair forecast
national weather service detroit/pontiac mi
335 pm edt tue aug 18 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...a cold front will then push across the region from
north to south this evening. this will bring showers and
thunderstorms and will veer winds from southwest to northwest in
the wake of the front. high pressure, 30.00 inches, will fill in
behind the front through the midweek period.


lcz460-190345-
lake st clair-
335 pm edt tue aug 18 2026

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

$$

fzus63 kdtx 181934
glflh 
expires:202608190345;;952169

open lake forecast for lake huron
national weather service detroit/pontiac mi
334 pm edt tue aug 18 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...a cold front will then push across the region from
north to south this evening. this will bring showers and
thunderstorms and will veer winds from southwest to northwest in
the wake of the front. high pressure, 30.00 inches, will fill in
behind the front through the midweek period.


lhz462>464-190345-
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-
334 pm edt tue aug 18 2026

.tonight...south winds 10 to 15 knots becoming southwest 5 to
10 knots by midnight...then veering to the west early in the
morning. a chance of showers and thunderstorms. waves 1 to
3 feet. 
.wednesday...north winds 5 to 10 knots. a chance of showers in
the morning. waves 1 to 3 feet. 
.wednesday night...light and variable winds becoming north 5 to
10 knots in the late evening and overnight. waves 2 feet or less.
.thursday...north winds 5 to 10 knots. waves 2 feet or less. 
.thursday night...northeast winds 5 to 10 knots veering to the
southeast in the late evening and overnight. waves 2 feet or
less. 
.friday...south winds 5 to 10 knots becoming southeast 10 to
15 knots late in the afternoon. a chance of showers late in the
evening. waves 1 to 3 feet. 
.saturday...south winds 10 to 15 knots becoming southwest 5 to
10 knots in the late morning and early afternoon...then veering
to the west early in the evening becoming northwest 10 to
15 knots by midnight. a chance of showers early in the morning. a
chance of thunderstorms. rain showers likely . waves 1 to 3 feet
building to 2 to 4 feet by midnight. 
.sunday...northwest winds 15 to 20 knots becoming north 10 to
15 knots by midnight. a chance of showers until afternoon. waves
3 to 5 feet. 


$$

fzus63 kmkx 181954
glflm 
expires:202608190315;;952648

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
254 pm cdt tue aug 18 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...

low pressure around 29.6 inches moving east across the hudson bay
region today will drag a cold front southward across lake 
michigan this afternoon and evening. expect prevailing west to 
southwesterly winds ahead of the cold front along with a few 
thunderstorms through this evening. then the cold front will push 
down the lake by wednesday bringing a north-northwesterly winds 
shift. winds will weaken and become more variable as high pressure
around 30.0 inches tracks through the western great lakes through
thursday. southwesterly winds and thunderstorm chances return 
later friday as another system is progged to bring another cold 
front across the upper great lakes region.


lmz261-362-364-366-563-565-567-868-190315-
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-
254 pm cdt tue aug 18 2026

sheboygan wi to pentwater mi north...

.tonight...west winds 10 to 20 kt becoming north 10 to 15 kt.
chance of showers and thunderstorms this evening. waves 2 to
4 ft. 
.wednesday...northwest winds 5 to 10 kt increasing to 10 to 15 kt
late in the morning, then increasing to 10 to 20 kt early in the
afternoon becoming southwest late. waves 1 to 2 ft. 
.wednesday night...south winds 10 to 15 kt diminishing to 5 to
10 kt. waves 1 to 2 ft. 
.thursday...southwest winds 10 to 15 kt increasing to 10 to
20 kt. waves 1 ft or less building to 1 to 3 ft. 
.thursday night...south winds 10 to 20 kt increasing to 15 to
25 kt. showers likely overnight. waves 1 to 3 ft. 
.friday...southwest winds to 30 kt. chance of showers in the
morning, then chance of showers and thunderstorms in the
afternoon. waves 3 to 5 ft. 
.friday night...southwest winds 15 to 25 kt veering to northwest
10 to 20 kt. chance of showers. waves 3 to 5 ft. 
.saturday...northwest winds 15 to 25 kt becoming north to 30 kt.
waves 2 to 4 ft. 
.sunday...north winds to 30 kt. waves 4 to 6 ft occasionally to
8 ft.  

$$

fzus63 kmkx 181954
glflm 
expires:202608190315;;952649

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
254 pm cdt tue aug 18 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...

low pressure around 29.6 inches moving east across the hudson bay
region today will drag a cold front southward across lake 
michigan this afternoon and evening. expect prevailing west to 
southwesterly winds ahead of the cold front along with a few 
thunderstorms through this evening. then the cold front will push 
down the lake by wednesday bringing a north-northwesterly winds 
shift. winds will weaken and become more variable as high pressure
around 30.0 inches tracks through the western great lakes through
thursday. southwesterly winds and thunderstorm chances return 
later friday as another system is progged to bring another cold 
front across the upper great lakes region.


lmz080-669-671-673-675-777-779-870-872-874-876-878-190315-
lake michigan from michigan city in to st. joseph mi 5 nm
offshore to mid lake-
lake michigan from sheboygan to port washington wi 5 nm offshore
to mid lake-
lake michigan from port washington to north point light wi 5 nm
offshore to mid lake-
lake michigan from north point light to wind point wi 5 nm
offshore to mid lake-
lake michigan from wind point wi to winthrop harbor il 5 nm
offshore to mid lake-
lake michigan from winthrop harbor to wilmette harbor il 5 nm
offshore to mid lake-
lake michigan from wilmette harbor il to michigan city in 5 nm
offshore to mid lake-
lake michigan from whitehall to pentwater mi 5 nm offshore to mid
lake-
lake michigan from grand haven to whitehall mi 5 nm offshore to
mid lake-
lake michigan from holland to grand haven mi 5 nm offshore to mid
lake-
lake michigan from south haven to holland mi 5 nm offshore to mid
lake-
lake michigan from st. joseph to south haven mi 5 nm offshore to
mid lake-
254 pm cdt tue aug 18 2026

sheboygan wi to pentwater mi south...

.tonight...southwest winds 10 to 20 kt veering to northwest 10 to
15 kt. chance of showers and thunderstorms this evening, then
slight chance of showers and thunderstorms overnight. waves 2 to
4 ft. 
.wednesday...north winds 10 to 15 kt. waves 1 to 3 ft. 
.wednesday night...northeast winds 10 to 15 kt becoming southeast
5 to 10 kt. waves 1 to 2 ft. 
.thursday...southeast winds 5 to 10 kt becoming south 10 to 20 kt
in the afternoon. waves 1 ft or less building to 1 to 3 ft. 
.thursday night...south winds 10 to 20 kt becoming southwest.
waves 1 to 3 ft. 
.friday...southwest winds 10 to 20 kt increasing to 30 kt in the
afternoon. chance of showers. waves 2 to 4 ft. 
.friday night...southwest winds 15 to 25 kt becoming west 10 to
20 kt. chance of showers. waves 3 to 5 ft. 
.saturday...northwest winds 15 to 25 kt becoming north to 30 kt.
waves 3 to 5 ft. 
.sunday...north winds to 30 kt. waves 4 to 7 ft occasionally to
9 ft.  

$$