fzus61 kcle 180735
glfle 
expires:202608181415;;925317

open lake forecast for lake erie
national weather service cleveland oh
335 am 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 will move south of lake erie today. a 
cold front will move south across the lake on wednesday. high 
pressure 30.20 inches will build over the lake on thursday and 
friday. low pressure 30.10 inches will enter the central great 
lakes region on saturday with a cold front approaching lake erie 
from the west.


lez162>164-181415-
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-
335 am edt tue aug 18 2026

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

winds and waves higher in and near thunderstorms.

$$

fzus63 kdtx 180733
glfsc 
expires:202608181545;;925236

lake st clair forecast
national weather service detroit/pontiac mi
333 am 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...diffuse area of high pressure, 30.00 inches, will wash
out across the eastern great lakes this morning. a cold front
will then push across the region from north to south this
afternoon and evening. this will bring showers and thunderstorms
and will veer winds from southwest to northwest in the wake of
the front.


lcz460-181545-
lake st clair-
333 am edt tue aug 18 2026

.today...west winds 5 to 10 knots backing to the south early in the
afternoon...then increasing to 10 to 15 knots late in the afternoon.
mostly sunny. waves 2 feet or less.
.tonight...southwest winds 10 to 15 knots veering to the west early
in the morning. partly cloudy becoming mostly cloudy by midnight
becoming partly cloudy. a chance of light showers after midnight.
waves 2 feet or less.
.wednesday...northwest winds 10 to 15 knots becoming north 5 to 10
knots in the late morning and afternoon. mostly sunny. a chance of
light showers in the late morning and early afternoon. 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 clear. waves 2 feet or
less.
.friday...south winds 10 to 15 knots. mostly clear. waves 2 feet or
less.
.saturday...west winds 5 to 10 knots. partly cloudy. a chance of
showers and thunderstorms. waves 2 feet or less.

$$

fzus63 kdtx 180733
glflh 
expires:202608181545;;925234

open lake forecast for lake huron
national weather service detroit/pontiac mi
333 am 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...diffuse area of high pressure, 30.00 inches, will wash
out across the eastern great lakes this morning. a cold front
will then push across the region from north to south this
afternoon and evening. this will bring showers and thunderstorms
and will veer winds from southwest to northwest in the wake of
the front.


lhz462>464-181545-
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-
333 am edt tue aug 18 2026

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


$$

fzus63 kmkx 180813
glflm 
expires:202608181515;;927149

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
313 am 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 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.


lmz261-362-364-366-563-565-567-868-181515-
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-
313 am cdt tue aug 18 2026

sheboygan wi to pentwater mi north...

.today...west winds 10 to 20 kt becoming southwest 15 to 25 kt.
slight chance of showers and thunderstorms this morning, then
chance of showers and thunderstorms this afternoon. waves 2 to
4 ft. 
.tonight...northwest winds 10 to 20 kt diminishing to 10 to
15 kt. chance of showers and thunderstorms in the evening. waves
2 to 4 ft subsiding to 1 to 3 ft. 
.wednesday...northwest winds 10 to 15 kt backing to southwest
10 to 20 kt. waves 1 to 2 ft. 
.wednesday night...south winds 10 to 15 kt becoming southeast.
waves 1 to 2 ft. 
.thursday...southwest winds 10 to 15 kt increasing to 10 to
20 kt. waves 1 to 2 ft. 
.thursday night...south winds 10 to 20 kt increasing to 15 to
25 kt. waves 2 to 4 ft. 
.friday...southwest winds to 30 kt. chance of showers. waves 3 to
5 ft. 
.saturday...northwest winds 10 to 20 kt increasing to 30 kt.
waves 1 to 3 ft.  

$$

fzus63 kmkx 180813
glflm 
expires:202608181515;;927150

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
313 am 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 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.


lmz080-669-671-673-675-777-779-870-872-874-876-878-181515-
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-
313 am cdt tue aug 18 2026

sheboygan wi to pentwater mi south...

.today...west winds 10 to 20 kt becoming southwest 15 to 25 kt.
chance of showers and slight chance of thunderstorms this
afternoon. waves 2 to 4 ft. 
.tonight...southwest winds 10 to 20 kt veering to north 10 to
15 kt. chance of showers and thunderstorms in the evening, then
slight chance of showers and thunderstorms overnight. waves 3 to
5 ft subsiding to 1 to 3 ft. 
.wednesday...north winds 10 to 15 kt increasing to 10 to 20 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 to 2 ft. 
.thursday night...south winds 10 to 20 kt. waves 1 to 3 ft. 
.friday...southwest winds 10 to 20 kt increasing to 15 to 25 kt.
waves 2 to 4 ft. 
.saturday...northwest winds 10 to 20 kt increasing to 15 to
25 kt. waves 2 to 4 ft.  

$$