fzus61 kcle 041946
glfle 
expires:202608050230;;622769

open lake forecast for lake erie
national weather service cleveland oh
346 pm edt tue aug 4 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 30.00 inches over lake erie will weaken on
wednesday as it drifts east ahead of an approaching cold front. 
this front will slow just to the west of lake erie thursday  
before slowly moving east across the lake friday and saturday.


lez162>164-050230-
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-
346 pm edt tue aug 4 2026

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

winds and waves higher in and near thunderstorms.

$$

fzus63 kdtx 041856
glfsc 
expires:202608050300;;621249

lake st clair forecast
national weather service detroit/pontiac mi
256 pm edt tue aug 4 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, retreats toward the mid
atlantic tonight. a slow moving cold front will move into lake
huron wednesday triggering showers and a chance for thunderstorms
across the region through the end of the workweek.


lcz460-050300-
lake st clair-
256 pm edt tue aug 4 2026

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

$$

fzus63 kdtx 041856
glflh 
expires:202608050300;;621247

open lake forecast for lake huron
national weather service detroit/pontiac mi
256 pm edt tue aug 4 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, retreats toward the mid
atlantic tonight. a slow moving cold front will move into lake
huron wednesday triggering showers and a chance for thunderstorms
across the region through the end of the workweek.


lhz462>464-050300-
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-
256 pm edt tue aug 4 2026

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


$$

fzus63 kmkx 041855
glflm 
expires:202608050315;;621242

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
155 pm cdt tue aug 4 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...

30.1 inch high pressure is centered between lakes erie and ontario 
this afternoon, resulting in generally southerly winds across the
open waters. a cold front is moving into western wisconsin, and 
will approach lake michigan through the remainder of the afternoon.
the front will slowly move across the waters this evening into 
wednesday morning, bringing a brief north-northwest wind shift. 
periods of showers and storms will accompany the slow-moving 
front, with severe weather appearing unlikely at this time. winds 
will trend variable wednesday evening through thursday, when 30.1 
inch high pressure is forecast to build back into the western 
great lakes.

a prolonged period of south-southwest winds will become established 
across lake michigan thursday night through sunday as 30.1 inch 
high pressure lingers off the mid-atlantic coast and 29.6 inch 
low pressure stalls over the hudson bay. a slow-moving surface
front will linger across the western great lakes saturday into the
beginning of next week, bringing multiple periods of showers and
thunderstorms. some of these storms could be stronger, with
additional details clarifying through the end of this week.


lmz261-362-364-366-563-565-567-868-050315-
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-
155 pm cdt tue aug 4 2026

sheboygan wi to pentwater mi north...

.tonight...southwest winds 15 to 25 kt diminishing to 10 to 20 kt
late this evening, then backing to east 10 to 15 kt after
midnight becoming northeast late. chance of showers and
thunderstorms this evening, then chance of showers and slight
chance of thunderstorms overnight. patchy fog overnight. waves
4 to 6 ft occasionally to 8 ft subsiding to 2 to 4 ft. 
.wednesday...northeast winds 10 to 15 kt diminishing to 5 to
10 kt. patchy fog in the morning. chance of showers and slight
chance of thunderstorms in the morning, then slight chance of
showers in the afternoon. waves 1 to 3 ft subsiding to 1 to 2 ft.
.wednesday night...southeast winds 5 to 10 kt. waves 1 ft or
less. 
.thursday...south winds 10 to 15 kt becoming southwest. waves
1 ft or less. 
.thursday night...south winds 10 to 15 kt becoming southwest
10 to 20 kt. waves 1 to 2 ft. 
.friday...southwest winds 10 to 20 kt increasing to 15 to 25 kt.
waves 2 to 4 ft. 
.friday night...south winds 15 to 25 kt becoming southwest. waves
2 to 4 ft. 
.saturday...southwest winds 15 to 25 kt. waves 1 to 3 ft. 
.sunday...southwest winds 15 to 25 kt. waves 2 to 4 ft.  

$$

fzus63 kmkx 041855
glflm 
expires:202608050315;;621243

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
155 pm cdt tue aug 4 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...

30.1 inch high pressure is centered between lakes erie and ontario 
this afternoon, resulting in generally southerly winds across the
open waters. a cold front is moving into western wisconsin, and 
will approach lake michigan through the remainder of the afternoon.
the front will slowly move across the waters this evening into 
wednesday morning, bringing a brief north-northwest wind shift. 
periods of showers and storms will accompany the slow-moving 
front, with severe weather appearing unlikely at this time. winds 
will trend variable wednesday evening through thursday, when 30.1 
inch high pressure is forecast to build back into the western 
great lakes.

a prolonged period of south-southwest winds will become established 
across lake michigan thursday night through sunday as 30.1 inch 
high pressure lingers off the mid-atlantic coast and 29.6 inch 
low pressure stalls over the hudson bay. a slow-moving surface
front will linger across the western great lakes saturday into the
beginning of next week, bringing multiple periods of showers and
thunderstorms. some of these storms could be stronger, with
additional details clarifying through the end of this week.


lmz080-669-671-673-675-777-779-870-872-874-876-878-050315-
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-
155 pm cdt tue aug 4 2026

sheboygan wi to pentwater mi south...

.tonight...south winds 15 to 25 kt diminishing to 10 to 20 kt
late this evening, then becoming southwest after midnight
diminishing to 10 to 15 kt late. chance of showers and slight
chance of thunderstorms overnight. waves 3 to 5 ft subsiding to
2 to 4 ft. 
.wednesday...southwest winds 10 to 15 kt diminishing to 5 to
10 kt. chance of showers and slight chance of thunderstorms in
the morning, then slight chance of showers and thunderstorms in
the afternoon. waves 1 to 3 ft. 
.wednesday night...west winds 5 to 10 kt becoming north. chance
of showers and thunderstorms. waves 1 to 2 ft. 
.thursday...northeast winds 5 to 10 kt becoming north 10 to
15 kt. chance of showers in the morning. waves 1 ft or less.
.thursday night...east winds 5 to 10 kt veering to southwest.
waves 1 ft or less. 
.friday...southwest winds 5 to 10 kt becoming south 10 to 20 kt
in the afternoon. waves 1 to 2 ft. 
.friday night...south winds 10 to 20 kt becoming southwest 10 to
15 kt. waves 1 to 3 ft. 
.saturday...southwest winds 10 to 20 kt becoming south. waves
1 to 3 ft. 
.sunday...southwest winds 10 to 20 kt increasing to 15 to 25 kt.
waves 2 to 4 ft.  

$$