(1/6)
Latest Great Lakes Marine Forecast by KCLE
Issued 4/30/2026 9:43 AM America/New_York.
Valid through 4/30/2026 4:15 PM America/New_York.
fzus61 kcle 301343
glfle
expires:202604302015;;783763
open lake forecast for lake erie
national weather service cleveland oh
943 am edt thu apr 30 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...
a trough averaging 30.00 inches will linger over the lake through
the end of the week. high pressure 30.10 inches will build into
the region on saturday with low pressure 29.80 inches moving
through the region on monday.
lez162-163-302015-
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-
943 am edt thu apr 30 2026
.this afternoon...northwest winds 10 to 15 knots. waves 1 to
2 feet.
.tonight...northwest winds 5 to 10 knots. a chance of showers
after midnight. waves 2 feet or less.
.friday...northwest winds 5 to 10 knots. waves 1 foot or less.
.friday night...northwest winds around 10 knots becoming north.
waves 1 to 2 feet.
.saturday...northwest winds 5 to 10 knots. waves 1 to 2 feet.
.sunday...west winds 10 to 15 knots becoming southwest and
increasing to 15 to 25 knots. a chance of showers sunday night.
waves 1 to 3 feet.
.monday...southwest winds 15 to 25 knots becoming west. a chance
of showers. waves 1 to 3 feet.
$$
(2/6)
Latest Great Lakes Marine Forecast by KCLE
Issued 4/30/2026 9:43 AM America/New_York.
Valid through 4/30/2026 4:15 PM America/New_York.
fzus61 kcle 301343
glfle
expires:202604302015;;783764
open lake forecast for lake erie
national weather service cleveland oh
943 am edt thu apr 30 2026
for waters beyond five nautical miles of shore on lake erie
waves are the significant wave height - the average of the highest
1/3 of the wave spectrum. occasional wave height is the average of
the highest 1/10 of the wave spectrum.
.synopsis...
a trough averaging 30.00 inches will linger over the lake through
the end of the week. high pressure 30.10 inches will build into
the region on saturday with low pressure 29.80 inches moving
through the region on monday.
lez164>166-302015-
the islands to vermilion oh beyond 5 nm off shoreline to us-
canadian border-
vermilion to avon point oh beyond 5 nm off shoreline to us-
canadian border-
avon point to willowick oh beyond 5 nm off shoreline to us-
canadian border-
943 am edt thu apr 30 2026
.this afternoon...northwest winds 10 to 15 knots becoming west.
waves 1 to 2 feet.
.tonight...west winds 5 to 10 knots becoming north. a slight
chance of showers late. waves 2 feet or less.
.friday...southeast winds 5 to 10 knots becoming northwest. a
chance of showers. waves around 1 foot.
.friday night...northwest winds 5 to 10 knots becoming north.
waves 1 to 2 feet.
.saturday...north winds 5 to 10 knots becoming northwest. waves
1 to 2 feet.
.sunday...west winds 10 to 15 knots becoming southwest 15 to
20 knots. a chance of showers sunday night. waves 1 to 3 feet
building to 2 to 4 feet.
.monday...southwest winds 15 to 20 knots. a chance of showers.
waves 2 to 4 feet.
$$
(3/6)
Latest Great Lakes Marine Forecast by KDTX
Issued 4/30/2026 9:48 AM America/New_York.
Valid through 4/30/2026 6:00 PM America/New_York.
fzus63 kdtx 301348
glfsc
expires:202604302200;;783976
lake st clair forecast
national weather service detroit/pontiac mi
948 am edt thu apr 30 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 diffuse low pressure system, 30.00, will very
gradually move across the great lakes through the late week
period. this will bring periods of isolated showers and will
generally maintain lighter northwest flow.
lcz460-302200-
lake st clair-
948 am edt thu apr 30 2026
.rest of today...northwest winds 10 to 15 knots. mostly cloudy.
waves 2 feet or less.
.tonight...northwest winds 10 to 15 knots becoming north 5 to 10
knots by midnight...then becoming light and variable early in the
morning. partly cloudy. waves 2 feet or less.
.friday...north winds 5 to 10 knots. partly sunny with a chance of
light showers. waves 2 feet or less.
.friday night...north winds 5 to 10 knots. mostly cloudy early in
the evening becoming partly cloudy. a chance of light showers early
in the evening. waves 2 feet or less.
.saturday...north winds 5 to 10 knots. mostly sunny in the morning
becoming partly cloudy. waves 2 feet or less.
.sunday...southwest winds 15 to 20 knots. partly cloudy. a chance of
light showers. waves 2 feet or less.
.monday...southwest winds 15 to 20 knots. partly cloudy. a chance of
light showers. waves 1 to 3 feet.
$$
(4/6)
Latest Great Lakes Marine Forecast by KDTX
Issued 4/30/2026 9:45 AM America/New_York.
Valid through 4/30/2026 5:45 PM America/New_York.
fzus63 kdtx 301345
glflh
expires:202604302145;;783973
open lake forecast for lake huron
national weather service detroit/pontiac mi
945 am edt thu apr 30 2026
for waters beyond five nautical miles off shore on lake huron
waves are the significant wave height - the average of the highest
1/3 of the wave spectrum. occasional wave height is the average of
the highest 1/10 of the wave spectrum.
.synopsis...a diffuse low pressure system, 30.00, will very
gradually move across the great lakes through the late week
period. this will bring periods of isolated rain showers and will
generally maintain lighter northwest flow.
lhz363-462>464-302145-
lake huron from sturgeon point to alabaster mi beyond 5nm off
shore-
lake huron from port austin to harbor beach beyond 5nm off shore-
lake huron from harbor beach to port sanilac beyond 5nm off shore-
lake huron from port sanilac to port huron beyond 5nm off shore-
945 am edt thu apr 30 2026
.rest of today...north winds 5 to 15 knots. waves 2 to 4 feet
subsiding to 1 to 3 feet late in the afternoon.
.tonight...north winds 5 to 10 knots backing to the west after
midnight. waves 1 to 3 feet.
.friday...northwest winds 5 to 10 knots. waves 1 to 3 feet.
.friday night...north winds 5 to 10 knots becoming northwest
10 to 15 knots after midnight. waves 1 to 3 feet building to 2 to
4 feet after midnight.
.saturday...northwest winds 10 to 15 knots becoming north 5 to
10 knots late in the morning...then backing to the southwest late
in the evening. waves 2 to 4 feet subsiding to 1 to 3 feet.
.sunday...west winds 5 to 10 knots becoming southwest 10 to
15 knots. a chance of showers by midnight. waves 1 to 3 feet
building to 3 to 5 feet .
.monday...southwest winds 10 to 15 knots increasing to 15 to
20 knots . a chance of showers. waves 3 to 5 feet.
$$
(5/6)
Latest Great Lakes Marine Forecast by KMKX
Issued 4/30/2026 9:11 AM US/Central.
Valid through 4/30/2026 4:15 PM US/Central.
fzus63 kmkx 301411
glflm
expires:202604302115;;785105
open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
911 am cdt thu apr 30 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...
north-northwest winds will continue through the end of the week
as low pressure around 29.6 inches shifts into the canadian
maritimes and high pressure builds to around 30.2 inches into the
northern great plains. winds will shift south-southwesterly
saturday into sunday as the high pressure moves into the ohio
river valley and low pressure around 29.5 inches forms over the
hudson bay. winds will briefly veer westerly sunday night into
monday as a weak cold front crosses lake michigan. showers and a
few thunderstorms will accompany the front, with severe weather
not anticipated at this time.
low pressure near 29.3 inches will develop near lake superior
monday, lifting toward the southern hudson bay and quebec on
tuesday. progression of the low will bring west-southwesterly
winds monday night through wednesday. a cold front is forecast to
cross the open waters wednesday afternoon, bringing a northwest
wind shift.
lmz261-362-364-366-563-565-567-868-302115-
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-
911 am cdt thu apr 30 2026
sheboygan wi to pentwater mi north...
.rest of today...northwest winds 10 to 15 kt backing to
southwest. isolated rain showers late this morning, then
scattered rain showers this afternoon. waves 1 to 2 ft.
.tonight...northwest winds 10 to 15 kt becoming north. isolated
rain showers. waves 1 to 2 ft.
.friday...north winds 10 to 15 kt becoming northwest 10 to 20 kt.
waves 1 to 3 ft.
.friday night...north winds 10 to 20 kt diminishing to 10 to
15 kt. waves 1 to 2 ft.
.saturday...northwest winds 10 to 20 kt backing to southwest.
waves 1 to 2 ft.
.saturday night...southwest winds 10 to 15 kt. waves 1 to 3 ft.
.sunday...southwest winds 10 to 20 kt increasing to 15 to 25 kt.
waves 2 to 4 ft.
.monday...southwest winds 15 to 25 kt increasing to 30 kt. chance
of rain showers. waves 2 to 4 ft building to 4 to 6 ft
occasionally to 8 ft.
$$
(6/6)
Latest Great Lakes Marine Forecast by KMKX
Issued 4/30/2026 9:11 AM US/Central.
Valid through 4/30/2026 4:15 PM US/Central.
fzus63 kmkx 301411
glflm
expires:202604302115;;785106
open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
911 am cdt thu apr 30 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...
north-northwest winds will continue through the end of the week
as low pressure around 29.6 inches shifts into the canadian
maritimes and high pressure builds to around 30.2 inches into the
northern great plains. winds will shift south-southwesterly
saturday into sunday as the high pressure moves into the ohio
river valley and low pressure around 29.5 inches forms over the
hudson bay. winds will briefly veer westerly sunday night into
monday as a weak cold front crosses lake michigan. showers and a
few thunderstorms will accompany the front, with severe weather
not anticipated at this time.
low pressure near 29.3 inches will develop near lake superior
monday, lifting toward the southern hudson bay and quebec on
tuesday. progression of the low will bring west-southwesterly
winds monday night through wednesday. a cold front is forecast to
cross the open waters wednesday afternoon, bringing a northwest
wind shift.
lmz080-669-671-673-675-777-779-870-872-874-876-878-302115-
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-
911 am cdt thu apr 30 2026
sheboygan wi to pentwater mi south...
.rest of today...north winds 10 to 15 kt veering to northeast.
scattered rain showers this afternoon. waves 1 to 2 ft.
.tonight...east winds 5 to 10 kt backing to north. scattered rain
showers in the evening, then isolated rain showers overnight.
waves 1 to 2 ft.
.friday...north winds 10 to 15 kt increasing to 10 to 20 kt.
waves 1 to 3 ft.
.friday night...north winds 10 to 15 kt diminishing to 5 to
10 kt. waves 1 to 3 ft.
.saturday...north winds 10 to 15 kt increasing to 10 to 20 kt.
waves 1 to 2 ft.
.saturday night...south winds 10 to 20 kt becoming southwest.
waves 1 to 3 ft.
.sunday...southwest winds 10 to 20 kt. waves 2 to 4 ft.
.monday...southwest winds 10 to 20 kt increasing to 15 to 25 kt.
waves 3 to 5 ft.
$$
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