(1/6)
Latest Great Lakes Marine Forecast by KCLE
Issued 7/17/2026 3:56 PM America/New_York.
Valid through 7/17/2026 10:15 PM America/New_York.
fzus61 kcle 171956
glfle
expires:202607180215;;136828
open lake forecast for lake erie
national weather service cleveland oh
356 pm edt fri jul 17 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...
low pressure 29.60 inches will move into the northern great lakes
tonight and will reach new england by saturday evening while
deepening to 29.50 inches. this will lift a warm front across lake
erie tonight before a strong cold front drops across the lake
saturday night. high pressure 30.00 inches will build across the
great lakes sunday and monday before another cold front crosses
tuesday. a trough averaging 29.80 inches will linger over lake erie
wednesday.
lez162-163-180215-
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-
356 pm edt fri jul 17 2026
.tonight...southeast winds 5 to 15 knots becoming southwest.
smoke this evening, then patchy smoke after midnight. a slight
chance of showers and thunderstorms early, then a chance of
showers and thunderstorms late this evening. a slight chance of
showers and thunderstorms after midnight. waves 2 feet or less.
.saturday...southwest winds 15 to 20 knots becoming west. a
slight chance of showers early. a chance of showers and
thunderstorms early in the afternoon, then showers and
thunderstorms likely late. waves 1 to 3 feet.
.saturday night...northwest winds 15 to 20 knots becoming
northeast. a chance of showers and thunderstorms in the evening.
waves 1 to 3 feet building to 2 to 4 feet.
.sunday...northeast winds 5 to 15 knots becoming east. waves 1 to
3 feet subsiding to 1 foot or less.
.sunday night...southeast winds 5 to 10 knots becoming south.
waves 1 foot or less.
.monday...southwest winds 5 to 15 knots increasing to 15 to
20 knots. showers likely with a chance of thunderstorms monday
night. waves 1 foot or less building to 1 to 3 feet.
.tuesday...southwest winds 15 to 20 knots becoming northwest.
showers likely with a chance of thunderstorms during the day,
then a chance of showers tuesday night. waves 2 to 4 feet.
.wednesday...northwest winds 15 to 20 knots diminishing to 10 to
15 knots. waves 2 to 4 feet subsiding to 1 to 3 feet.
winds and waves higher in and near thunderstorms.
$$
(2/6)
Latest Great Lakes Marine Forecast by KCLE
Issued 7/17/2026 3:56 PM America/New_York.
Valid through 7/17/2026 10:15 PM America/New_York.
fzus61 kcle 171956
glfle
expires:202607180215;;136829
open lake forecast for lake erie
national weather service cleveland oh
356 pm edt fri jul 17 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...
low pressure 29.60 inches will move into the northern great lakes
tonight and will reach new england by saturday evening while
deepening to 29.50 inches. this will lift a warm front across lake
erie tonight before a strong cold front drops across the lake
saturday night. high pressure 30.00 inches will build across the
great lakes sunday and monday before another cold front crosses
tuesday. a trough averaging 29.80 inches will linger over lake erie
wednesday.
lez164-165-180215-
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-
356 pm edt fri jul 17 2026
.tonight...east winds 5 to 15 knots becoming southwest 15 to
20 knots. smoke through the early overnight. a chance of showers
and thunderstorms late this evening. a chance of showers with a
slight chance of thunderstorms after midnight. waves 1 to 3 feet.
.saturday...southwest winds 15 to 20 knots becoming west. a
chance of showers with a slight chance of thunderstorms in the
morning, then showers and thunderstorms in the afternoon. waves
2 to 4 feet building to 3 to 5 feet.
.saturday night...northwest winds 15 to 20 knots becoming
northeast. showers and thunderstorms in the evening. waves 2 to
4 feet building to 3 to 5 feet.
.sunday...northeast winds 5 to 15 knots. waves 2 to 4 feet
subsiding to 1 to 2 feet.
.sunday night...east winds 5 to 10 knots becoming south. waves
1 foot or less.
.monday...south winds 5 to 15 knots becoming southwest 15 to
20 knots. showers likely with a chance of thunderstorms monday
night. waves 1 foot or less building to 3 to 5 feet.
.tuesday...southwest winds 15 to 25 knots becoming northwest.
showers with a chance of thunderstorms during the day, then a
chance of showers tuesday night. waves 3 to 5 feet.
.wednesday...northwest winds 15 to 20 knots diminishing to 10 to
15 knots. waves 3 to 5 feet subsiding to 1 to 2 feet.
winds and waves higher in and near thunderstorms.
$$
(3/6)
Latest Great Lakes Marine Forecast by KDTX
Issued 7/17/2026 4:00 PM America/New_York.
Valid through 7/18/2026 12:00 AM America/New_York.
fzus63 kdtx 172000
glfsc
expires:202607180400;;136957
lake st clair forecast
national weather service detroit/pontiac mi
400 pm edt fri jul 17 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...canadian wildfire smoke persists until the overnight
hours as weak low pressure systems approach the region bringing
some showers and thunderstorms. this will be followed by a
secondary low on saturday tracking across the straits into
northern lake huron with additional unsettled weather.
lcz460-180400-
lake st clair-
400 pm edt fri jul 17 2026
...dense smoke advisory in effect until 10 pm edt this evening...
.tonight...south winds 10 to 15 knots veering to the southwest early
in the morning. mostly clear becoming mostly cloudy late this
evening becoming partly cloudy. smoke. waves 2 feet or less.
.saturday...southwest winds 10 to 15 knots becoming west 15 to 20
knots in the afternoon. partly sunny. a chance of thunderstorms
early in the afternoon. showers likely and a chance of thunderstorms
late in the afternoon. waves 1 to 3 feet.
.saturday night...north winds 20 to 25 knots diminishing to 15 to 20
knots in the late evening and overnight. mostly clear. a chance of
showers and thunderstorms early in the evening. patchy smoke after
midnight. waves 1 to 3 feet.
.sunday...north winds 10 to 15 knots becoming northeast 5 to 10
knots in the late morning and afternoon. mostly sunny. patchy smoke
early in the morning. waves 2 feet or less.
.sunday night...east winds 5 to 10 knots veering to the south after
midnight. mostly clear. waves 2 feet or less.
.monday...southwest winds 5 to 10 knots becoming south 15 to 20
knots. partly sunny...then partly cloudy with a chance of showers
and thunderstorms in the evening. waves 2 feet or less.
.tuesday...northwest winds 20 to 25 knots. showers and a chance of
thunderstorms. waves 1 to 3 feet.
.wednesday...northwest winds 20 to 25 knots. mostly clear. waves 2
to 4 feet.
$$
(4/6)
Latest Great Lakes Marine Forecast by KDTX
Issued 7/17/2026 3:57 PM America/New_York.
Valid through 7/18/2026 12:00 AM America/New_York.
fzus63 kdtx 171957
glflh
expires:202607180400;;136861
open lake forecast for lake huron
national weather service detroit/pontiac mi
357 pm edt fri jul 17 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...canadian wildfire smoke persists until the overnight
hours as weak low pressure systems approach the region bringing
some showers and thunderstorms. this will be followed by a
secondary low on saturday tracking across the straits into
northern lake huron with additional unsettled weather.
lhz462>464-180400-
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-
357 pm edt fri jul 17 2026
...dense smoke advisory in effect until 10 pm edt this evening...
.tonight...southeast winds 5 to 10 knots becoming south 10 to
15 knots in the late evening and overnight. smoke. waves 1 to
3 feet building to 2 to 4 feet after midnight.
.saturday...southwest winds 10 to 15 knots increasing to 15 to
20 knots late in the morning...then becoming west 10 to 15 knots
early in the afternoon becoming northwest 15 to 20 knots with
gusts to around 30 knots late in the afternoon. a chance of
thunderstorms in the morning...then a chance of showers and
thunderstorms in the afternoon. patchy smoke in the afternoon.
waves 3 to 5 feet.
.saturday night...north winds 20 to 25 knots with gusts to around
30 knots decreasing to 10 to 15 knots. patchy smoke. waves 6 to
9 feet. waves occasionally around 12 feet.
.sunday...north winds 10 to 15 knots decreasing to 5 to 10 knots
in the late morning and afternoon. waves 3 to 5 feet subsiding to
1 to 3 feet early in the afternoon.
.sunday night...light and variable winds becoming southeast 5 to
10 knots by midnight...then veering to the south after midnight.
waves 2 feet or less.
.monday...south winds 10 to 15 knots increasing to 15 to 20 knots
with gusts to around 30 knots late in the afternoon. showers late
in the afternoon. waves 1 to 3 feet building to 3 to 5 feet.
.tuesday...southwest winds 15 to 20 knots decreasing to 10 to
15 knots in the late morning and early afternoon...then becoming
northwest 15 to 20 knots with gusts to 35 knot gales early in the
evening increasing to 20 to 25 knots with gusts to 35 knot gales
by midnight. showers early in the morning. a chance of
thunderstorms. a chance of showers . waves 3 to 5 feet building
to 8 to 12 feet . waves occasionally around 15 feet.
.wednesday...northwest winds 20 to 25 knots with gusts to around
30 knots decreasing to 15 to 20 knots with gusts to around
30 knots . a chance of showers early in the morning. waves 6 to
9 feet. waves occasionally around 11 feet.
$$
(5/6)
Latest Great Lakes Marine Forecast by KMKX
Issued 7/17/2026 3:06 PM US/Central.
Valid through 7/17/2026 10:30 PM US/Central.
fzus63 kmkx 172006
glflm
expires:202607180330;;137504
open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
306 pm cdt fri jul 17 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 from northern minnesota and northwestern ontario
will continue across all of the open waters of lake michigan into
early this evening. it will linger over the northern half of the
open waters until 1 am cdt saturday. the dense smoke reduce
visibility to 1 nautical mile or less at times. thus, the marine
dense smoke advisory continues until early this evening for the
southern half of lake michigan, and until 1 am cdt saturday for
the northern half.
southerly winds continue through tonight, as low pressure around
29.6 inches moves east across lake superior. this low pressure
system is expected to drag a cold front southward across the lake
on saturday, with the front pushing south of the lake by saturday
night. breezy southerly winds are expected ahead of the front,
with the strongest winds expected over the northern end of lake
michigan. winds then quickly veer northwesterly and northerly
following the frontal passage on saturday. north gusts may
approach 30 knots, particularly over the southern half of the
lake.
winds then quickly taper saturday night, as high pressure around
30.1 inches moves over the northern great lakes. northeast to
light and variable winds are then expected through sunday into
sunday night. gusty south to southwest winds may then develop
monday into monday night, with gusty west to northwest winds
possible into the middle of next week.
lmz261-362-364-366-563-565-567-868-180330-
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-
306 pm cdt fri jul 17 2026
sheboygan wi to pentwater mi north...
...dense smoke advisory in effect until 10 pm cdt this evening...
.tonight...south winds 15 to 25 kt becoming southwest to 30 kt.
areas of smoke this evening, then patchy smoke overnight. chance
of showers and thunderstorms this evening, then chance of showers
and slight chance of thunderstorms overnight. waves 1 to 3 ft
building to 3 to 5 ft.
.saturday...west winds 15 to 25 kt becoming north to 30 kt.
patchy smoke in the morning, then areas of smoke in the
afternoon. waves 4 to 6 ft occasionally to 8 ft.
.saturday night...north winds to 30 kt becoming northeast 10 to
15 kt. smoke in the evening. waves 4 to 6 ft occasionally to 8 ft
subsiding to 2 to 4 ft.
.sunday...northeast winds 5 to 10 kt veering to southwest 10 to
20 kt in the afternoon. waves 1 to 3 ft.
.sunday night...south winds 10 to 20 kt becoming southwest 15 to
25 kt. waves 1 to 2 ft building to 2 to 4 ft.
.monday...southwest gales to 35 kt increasing to gales to 40 kt.
showers likely in the morning, then showers likely with a chance
of thunderstorms in the afternoon. waves 4 to 6 ft occasionally
to 8 ft building to 6 to 9 ft occasionally to 12 ft.
.monday night...southwest gales to 35 kt becoming west to 30 kt.
chance of showers. waves 6 to 9 ft occasionally to 12 ft.
.tuesday...northwest winds to 30 kt increasing to gales to 40 kt.
waves 4 to 7 ft occasionally to 9 ft building to 5 to 8 ft
occasionally to 10 ft.
.wednesday...northwest gales to 35 kt. waves 8 to 11 ft
occasionally to 14 ft subsiding to 6 to 9 ft occasionally to
12 ft.
$$
(6/6)
Latest Great Lakes Marine Forecast by KMKX
Issued 7/17/2026 3:06 PM US/Central.
Valid through 7/17/2026 10:30 PM US/Central.
fzus63 kmkx 172006
glflm
expires:202607180330;;137505
open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
306 pm cdt fri jul 17 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 from northern minnesota and northwestern ontario
will continue across all of the open waters of lake michigan into
early this evening. it will linger over the northern half of the
open waters until 1 am cdt saturday. the dense smoke reduce
visibility to 1 nautical mile or less at times. thus, the marine
dense smoke advisory continues until early this evening for the
southern half of lake michigan, and until 1 am cdt saturday for
the northern half.
southerly winds continue through tonight, as low pressure around
29.6 inches moves east across lake superior. this low pressure
system is expected to drag a cold front southward across the lake
on saturday, with the front pushing south of the lake by saturday
night. breezy southerly winds are expected ahead of the front,
with the strongest winds expected over the northern end of lake
michigan. winds then quickly veer northwesterly and northerly
following the frontal passage on saturday. north gusts may
approach 30 knots, particularly over the southern half of the
lake.
winds then quickly taper saturday night, as high pressure around
30.1 inches moves over the northern great lakes. northeast to
light and variable winds are then expected through sunday into
sunday night. gusty south to southwest winds may then develop
monday into monday night, with gusty west to northwest winds
possible into the middle of next week.
lmz080-669-671-673-675-777-779-870-872-874-876-878-180330-
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-
306 pm cdt fri jul 17 2026
sheboygan wi to pentwater mi south...
...dense smoke advisory in effect until 7 pm cdt this evening...
.tonight...south winds 10 to 20 kt becoming southwest 15 to
25 kt. areas of smoke this evening. slight chance of
thunderstorms with isolated showers this evening. waves 2 to
4 ft.
.saturday...west winds 15 to 25 kt veering to north to 30 kt.
chance of showers and slight chance of thunderstorms in the
morning, then chance of showers and thunderstorms in the
afternoon. patchy smoke in the afternoon. waves 3 to 5 ft
building to 4 to 7 ft occasionally to 9 ft.
.saturday night...north winds to 30 kt becoming northeast 10 to
20 kt. patchy smoke in the evening. waves 4 to 7 ft occasionally
to 9 ft subsiding to 4 to 6 ft occasionally to 8 ft.
.sunday...northeast winds 10 to 15 kt becoming north 10 to 20 kt.
waves 3 to 5 ft subsiding to 1 to 3 ft.
.sunday night...southeast winds 10 to 15 kt becoming south 10 to
20 kt. waves 1 to 2 ft building to 1 to 3 ft.
.monday...south winds to 30 kt increasing to gales to 35 kt.
chance of showers in the morning, then chance of showers and
thunderstorms in the afternoon. waves 4 to 6 ft occasionally to
8 ft building to 5 to 8 ft occasionally to 10 ft.
.monday night...southwest gales to 35 kt diminishing to 30 kt.
showers likely with a chance of thunderstorms. waves 5 to 8 ft
occasionally to 10 ft.
.tuesday...west winds to 30 kt becoming northwest gales to 35 kt.
waves 4 to 7 ft occasionally to 9 ft building to 5 to 8 ft
occasionally to 10 ft.
.wednesday...northwest gales to 35 kt becoming north. waves 8 to
12 ft occasionally to 16 ft.
$$
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