fzus61 kcle 200741
glfle 
expires:202607201415;;277950

open lake forecast for lake erie
national weather service cleveland oh
341 am edt mon jul 20 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 will drift east away from the region
by this evening, allowing a warm front to lift across the lake
late tonight into early tuesday. a cold front will move southeast
across the area tuesday afternoon into tuesday night with a trough
averaging 29.80 inches lingering over the eastern great lakes
through wednesday. high pressure 30.10 inches will build east
thursday and friday.


lez162>164-201415-
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-
341 am edt mon jul 20 2026

.today...south winds 10 knots or less becoming southeast. patchy
smoke. waves 1 foot or less. 
.tonight...south winds 5 to 15 knots becoming southwest 15 to
20 knots. patchy smoke early. a chance of showers and
thunderstorms after midnight. showers likely with a chance of
thunderstorms late. waves 1 to 3 feet. 
.tuesday...southwest winds 15 to 25 knots becoming west. a chance
of showers and thunderstorms in the morning, then showers likely
with a chance of thunderstorms in the afternoon. waves 2 to
4 feet building to 3 to 5 feet, then subsiding to 2 to 4 feet. 
.tuesday night...west winds 15 to 20 knots becoming northwest. a
chance of showers and thunderstorms in the evening, then a chance
of showers overnight. waves 2 to 4 feet. 
.wednesday...northwest winds 15 to 20 knots becoming north and
diminishing to 5 to 10 knots. waves 2 to 4 feet subsiding to 1 to
3 feet. 
.thursday...north winds 10 knots or less becoming south. waves
1 foot or less. 
.friday...southwest winds less than 10 knots becoming south.
waves 1 foot or less. 

winds and waves higher in and near thunderstorms.

$$

fzus63 kdtx 200759
glfsc 
expires:202607201600;;278243

lake st clair forecast
national weather service detroit/pontiac mi
359 am edt mon jul 20 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 influence wanes across the central great
lakes today with dry initial conditions, then a cold front passes
through tonight into tuesday. this leads to periods of showers
and thunderstorms. wet weather could persist on tuesday before
high pressure from alberta/manitoba builds in by tuesday evening
with a drying effect.


lcz460-201600-
lake st clair-
359 am edt mon jul 20 2026

...small craft advisory in effect from late tonight through
tuesday evening...

.today...light and variable winds becoming south 10 to 15 knots.
partly sunny. patchy smoke. waves 2 feet or less.
.tonight...south winds 15 to 20 knots becoming southwest 20 to 25
knots early in the morning. partly cloudy in the evening.. then
mostly cloudy with a chance of thunderstorms after midnight. mostly
cloudy with a chance of showers and thunderstorms early in the
morning. patchy smoke. waves 1 to 3 feet building to 2 to 4 feet
early in the morning.
.tuesday...southwest winds 20 to 25 knots with gusts to 30 knots
becoming west 15 to 20 knots in the late morning and afternoon.
mostly sunny. a chance of light showers until late afternoon.. then
light showers likely and a chance of thunderstorms early in the
afternoon. waves 2 to 4 feet subsiding to 1 to 3 feet in the late
morning and afternoon.
.tuesday night...northwest winds 15 to 20 knots increasing to 20 to
25 knots in the late evening and overnight. partly cloudy. a chance
of showers and thunderstorms early in the evening. waves 1 to 3 feet
building to 2 to 4 feet in the late evening and overnight.
.wednesday...northwest winds 20 to 25 knots becoming north 10 to 15
knots. partly sunny becoming mostly sunny in the afternoon becoming
clear. waves 1 to 3 feet.
.thursday...south winds 5 to 10 knots. clear. waves 2 feet or less.
.friday...south winds 5 to 10 knots. mostly clear. waves 2 feet or
less.

$$

fzus63 kdtx 200758
glflh 
expires:202607201600;;278232

open lake forecast for lake huron
national weather service detroit/pontiac mi
358 am edt mon jul 20 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 influence wanes across the central great
lakes today with dry initial conditions, then a cold front passes
through tonight into tuesday. this leads to periods of showers
and thunderstorms. wet weather could persist on tuesday before
high pressure from alberta/manitoba builds in by tuesday evening
with a drying effect.


lhz462>464-201600-
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-
358 am edt mon jul 20 2026

.today...light and variable winds becoming south 10 to 15 knots.
patchy smoke. waves 1 to 3 feet. 
.tonight...south winds 10 to 15 knots increasing to 20 to
25 knots with gusts to around 30 knots. patchy smoke. a chance of
showers and thunderstorms after midnight. waves 3 to 5 feet
building to 5 to 7 feet early in the morning. waves occasionally
around 10 feet. 
.tuesday...southwest winds 15 to 20 knots with gusts to around
30 knots becoming west 10 to 15 knots in the late morning and
afternoon. a chance of showers in the morning...then a chance of
showers and thunderstorms in the afternoon. waves 4 to 6 feet.
waves occasionally around 8 feet. 
.tuesday night...northwest winds 15 to 20 knots increasing to
20 to 25 knots in the late evening and overnight. gusts to
30 knots. a chance of showers and thunderstorms in the evening.
waves 8 to 12 feet. waves occasionally around 15 feet. 
.wednesday...northwest winds 20 to 25 knots with gusts to around
30 knots becoming north 10 to 15 knots late in the evening. waves
8 to 12 feet. waves occasionally around 15 feet. 
.thursday...west winds 5 to 10 knots early in the morning
becoming light and variable...then becoming south 5 to 10 knots .
waves 3 to 5 feet subsiding to 1 to 3 feet. 
.friday...southwest winds 5 to 10 knots backing to the south .
waves 2 feet or less. 


$$

fzus63 kmkx 200756
glflm 
expires:202607201515;;278183

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
256 am cdt mon jul 20 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...

wildfire smoke currently overspreads lake michigan, with areas of
denser smoke reducing visibility to around 1 nautical mile at 
times. a marine dense smoke advisory is in effect across lake 
michigan through early this morning.

low pressure around 29.4 inches tracking southeast across manitoba
into ontario will drag a cold front across the lake tonight. 
south to southwest winds ahead of the front will become gusty. an 
occasional gale force gust will be possible this afternoon and 
evening over the northern half of the lake. strong to severe 
thunderstorms will also be possible this afternoon through tonight
across the entire lake. winds will veer northwest behind the cold
front and remain gusty. then winds veer due north later tuesday 
into tuesday night with gusts to gale force possible. heading into
wednesday winds are expected to diminish becoming light and 
variable by wednesday night as high pressures around 30.1 inches builds
into the great lakes region.


lmz261-362-364-366-563-565-567-868-201515-
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-
256 am cdt mon jul 20 2026

sheboygan wi to pentwater mi north...

...dense smoke advisory in effect until 7 am cdt this morning...

.today...southwest winds 15 to 25 kt becoming south gales to
35 kt. patchy smoke. slight chance of showers and thunderstorms
this afternoon. waves 3 to 5 ft building to 6 to 9 ft
occasionally to 12 ft. 
.tonight...south gales to 40 kt becoming southwest gales to 35 kt
late in the evening, then diminishing to 30 kt after midnight
becoming west late. patchy smoke. showers likely with a chance of
thunderstorms in the evening, then chance of showers overnight.
waves 7 to 10 ft occasionally to 13 ft subsiding to 4 to 7 ft
occasionally to 9 ft. 
.tuesday...west winds to 30 kt becoming north gales to 35 kt.
patchy smoke in the morning. waves 4 to 7 ft occasionally to 9 ft
building to 5 to 8 ft occasionally to 10 ft. 
.tuesday night...north gales to 35 kt. waves 8 to 11 ft
occasionally to 14 ft. 
.wednesday...north gales to 35 kt diminishing to 30 kt. waves
7 to 10 ft occasionally to 13 ft subsiding to 4 to 7 ft
occasionally to 9 ft. 
.wednesday night...west winds 15 to 25 kt becoming southwest 5 to
10 kt. waves 2 to 4 ft subsiding to 1 to 2 ft. 
.thursday...southwest winds 10 to 20 kt increasing to 15 to
25 kt. waves 1 to 3 ft. 
.friday...southwest winds 10 to 20 kt increasing to 15 to 25 kt.
waves 1 to 3 ft.  

$$

fzus63 kmkx 200756
glflm 
expires:202607201515;;278184

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
256 am cdt mon jul 20 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...

wildfire smoke currently overspreads lake michigan, with areas of
denser smoke reducing visibility to around 1 nautical mile at 
times. a marine dense smoke advisory is in effect across lake 
michigan through early this morning.

low pressure around 29.4 inches tracking southeast across manitoba
into ontario will drag a cold front across the lake tonight. 
south to southwest winds ahead of the front will become gusty. an 
occasional gale force gust will be possible this afternoon and 
evening over the northern half of the lake. strong to severe 
thunderstorms will also be possible this afternoon through tonight
across the entire lake. winds will veer northwest behind the cold
front and remain gusty. then winds veer due north later tuesday 
into tuesday night with gusts to gale force possible. heading into
wednesday winds are expected to diminish becoming light and 
variable by wednesday night as high pressures around 30.1 inches builds
into the great lakes region.


lmz080-669-671-673-675-777-779-870-872-874-876-878-201515-
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-
256 am cdt mon jul 20 2026

sheboygan wi to pentwater mi south...

...dense smoke advisory in effect until 7 am cdt this morning...

.today...south winds 10 to 20 kt increasing to 30 kt. patchy
smoke. waves 2 to 4 ft building to 5 to 8 ft occasionally to
10 ft. 
.tonight...south winds to 30 kt becoming west. patchy smoke in
the evening. chance of showers and thunderstorms. waves 5 to 8 ft
occasionally to 10 ft. 
.tuesday...west winds to 30 kt becoming north. patchy smoke in
the morning. waves 4 to 7 ft occasionally to 9 ft. 
.tuesday night...north gales to 35 kt. waves 8 to 12 ft
occasionally to 16 ft. 
.wednesday...north gales to 35 kt diminishing to 30 kt. waves
8 to 11 ft occasionally to 14 ft subsiding to 6 to 9 ft
occasionally to 12 ft. 
.wednesday night...northeast winds to 30 kt becoming northwest
5 to 10 kt. waves 4 to 7 ft occasionally to 9 ft subsiding to
2 to 4 ft. 
.thursday...west winds 10 to 15 kt becoming southwest 10 to
20 kt. waves 1 to 3 ft. 
.friday...southwest winds 10 to 15 kt becoming south 10 to 20 kt.
waves 1 to 3 ft.  

$$