fzus61 kcle 041315
glfle 
expires:202608042015;;608132

open lake forecast for lake erie
national weather service cleveland oh
915 am 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 cross lake erie thursday and friday before
stalling just east of the lakes on saturday.


lez162>164-042015-
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-
915 am edt tue aug 4 2026

.this afternoon...south winds less than 10 knots becoming east.
waves 1 foot or less. 
.tonight...east winds less than 10 knots. waves 1 foot or less. 
.wednesday...light and variable winds. waves 1 foot or less. 
.wednesday night...southeast winds 10 knots or less becoming
southwest. waves 1 foot or less. 
.thursday...southwest winds 5 to 10 knots. a chance of showers
and thunderstorms during the day, then showers likely with a
chance of thunderstorms thursday night. waves 1 foot or less. 
.friday...southwest winds 10 knots or less. a chance of showers
and thunderstorms friday night. waves 1 foot or less. 
.saturday...southwest winds 5 to 10 knots. waves 1 foot or less. 

winds and waves higher in and near thunderstorms.

$$

fzus63 kdtx 041326
glfsc 
expires:202608042130;;608246

lake st clair forecast
national weather service detroit/pontiac mi
926 am 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, will retreat across the
eastern great lakes toward the mid atlantic today and tonight. a
slow moving cold front, 29.90 inches, will move from the western
great lakes wednesday to the eastern great lakes thursday
afternoon and thursday night. this front will trigger showers and
a chance of thunderstorms across the region. a weak south-
southwest flow will then take hold across the region friday into
saturday.


lcz460-042130-
lake st clair-
926 am edt tue aug 4 2026

.rest of today...south winds 5 to 10 knots. sunny. waves 2 feet or
less.
.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 late morning and afternoon. sunny. waves 2 feet or less.
.wednesday night...southwest winds 5 to 10 knots. mostly clear.
waves 2 feet or less.
.thursday...southwest winds 5 to 10 knots backing to the south in
the evening. partly sunny becoming mostly cloudy. a chance of light
showers. a chance of thunderstorms in the afternoon and evening.
light showers likely in the evening. waves 2 feet or less.
.friday...south winds 5 to 10 knots. partly cloudy. light showers
likely and a chance of thunderstorms. waves 2 feet or less.
.saturday...southwest winds 5 to 10 knots. mostly clear. waves 2
feet or less.

$$

fzus63 kdtx 041325
glflh 
expires:202608042130;;608240

open lake forecast for lake huron
national weather service detroit/pontiac mi
925 am 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, will retreat across the
eastern great lakes toward the mid atlantic today and tonight. a
slow moving cold front, 29.90 inches, will move from the western
great lakes wednesday to the eastern great lakes thursday
afternoon and thursday night. this front will trigger showers and
a chance of thunderstorms across the region. a weak south-
southwest flow will then take hold across the region friday into
saturday.


lhz462>464-042130-
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-
925 am edt tue aug 4 2026

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


$$

fzus63 kmkx 041249
glflm 
expires:202608042130;;607151

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
749 am 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 over lake erie this morning,
resulting in generally southerly winds across the open waters. a
cold front is moving into the northern mississippi river valley,
and will approach lake michigan into this 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.


lmz261-362-364-366-563-565-567-868-042130-
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-
749 am cdt tue aug 4 2026

sheboygan wi to pentwater mi north...

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

$$

fzus63 kmkx 041249
glflm 
expires:202608042130;;607152

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
749 am 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 over lake erie this morning,
resulting in generally southerly winds across the open waters. a
cold front is moving into the northern mississippi river valley,
and will approach lake michigan into this 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.


lmz080-669-671-673-675-777-779-870-872-874-876-878-042130-
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-
749 am cdt tue aug 4 2026

sheboygan wi to pentwater mi south...

.rest of today...south winds 10 to 20 kt increasing to 15 to
25 kt. waves 3 to 5 ft. 
.tonight...south winds 15 to 25 kt diminishing to 10 to 20 kt
late in the evening, then becoming southwest 10 to 15 kt
overnight. chance of showers and slight chance of thunderstorms
in the evening, then showers likely with a chance of
thunderstorms overnight. waves 3 to 5 ft subsiding to 2 to 4 ft. 
.wednesday...west winds 10 to 15 kt becoming southwest 5 to
10 kt. chance of showers in the morning. waves 1 to 3 ft. 
.wednesday night...east winds 5 to 10 kt veering to west. showers
with a chance of thunderstorms in the evening, then chance of
showers and thunderstorms overnight. waves 1 to 2 ft.
.thursday...north winds 5 to 10 kt increasing to 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.
waves 1 to 2 ft. 
.saturday...southwest winds 10 to 20 kt becoming south. waves
1 to 3 ft.  

$$