(1/9)
Latest Great Lakes Marine Forecast by KBUF
Issued 8/9/2026 4:03 AM America/New_York.
Valid through 8/9/2026 11:00 AM America/New_York.
fzus61 kbuf 090803
glflo
expires:202608091500;;871117
open lake forecast for lake ontario
national weather service buffalo ny
402 am edt sun aug 9 2026
for waters beyond five nautical miles of shore on lake ontario
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 30.2 inch high will ridge northward across the lower
great lakes today. this ridge will then begin to exit eastward, with
a warm front crossing the lake later tonight, followed by a cold
front moving across the lake monday night. behind the front, a
trough averaging 29.8 inches will linger over the eastern great
lakes through this thursday, with another cold front progged to
sweep across the lake wednesday night.
loz062-091500-
lake ontario open waters from the niagara river to hamlin beach-
402 am edt sun aug 9 2026
.today...west winds 5 to 15 knots becoming southwest. waves
2 feet or less.
.tonight...south winds 10 knots or less. a chance of showers
after midnight. showers likely late. waves 1 foot or less.
.monday...southwest winds 5 to 10 knots becoming west. showers
likely in the morning, then showers likely with a chance of
thunderstorms in the afternoon. waves 2 feet or less.
.monday night...west winds 5 to 10 knots. a chance of showers in
the evening. waves 1 to 2 feet.
.tuesday...west winds 10 knots or less becoming north. waves
1 foot or less.
.wednesday...northwest winds 10 knots or less. a chance of
showers. waves 1 foot or less.
.thursday...northwest winds 5 to 15 knots. a chance of showers
during the day. waves 1 to 2 feet.
winds and waves higher in and near thunderstorms.
$$
(2/9)
Latest Great Lakes Marine Forecast by KBUF
Issued 8/9/2026 4:03 AM America/New_York.
Valid through 8/9/2026 11:00 AM America/New_York.
fzus61 kbuf 090803
glflo
expires:202608091500;;871118
open lake forecast for lake ontario
national weather service buffalo ny
402 am edt sun aug 9 2026
for waters beyond five nautical miles of shore on lake ontario
waves are the significant wave height - the average of the highest
1/3 of the wave spectrum. occasional wave height is the average of
the highest 1/10 of the wave spectrum.
.synopsis...a 30.2 inch high will ridge northward across the lower
great lakes today. this ridge will then begin to exit eastward, with
a warm front crossing the lake later tonight, followed by a cold
front moving across the lake monday night. behind the front, a
trough averaging 29.8 inches will linger over the eastern great
lakes through this thursday, with another cold front progged to
sweep across the lake wednesday night.
loz063>065-091500-
lake ontario open waters from hamlin beach to the saint lawrence
river-
402 am edt sun aug 9 2026
.today...west winds 10 to 15 knots. waves 1 to 3 feet.
.tonight...west winds 5 to 15 knots becoming south. a chance of
showers late. waves 2 feet or less.
.monday...south winds 10 to 15 knots becoming west. showers
likely in the morning, then showers likely with a chance of
thunderstorms in the afternoon. waves 1 to 2 feet.
.monday night...west winds 10 to 15 knots. a chance of showers
and thunderstorms in the evening. waves 1 to 2 feet.
.tuesday...west winds 5 to 10 knots. waves 2 feet or less.
.wednesday...west winds 10 knots or less. a chance of showers.
waves 1 foot or less.
.thursday...west winds 5 to 15 knots becoming northwest. a chance
of showers. waves 1 to 3 feet.
winds and waves higher in and near thunderstorms.
$$
(3/9)
Latest Great Lakes Marine Forecast by KCLE
Issued 8/9/2026 3:49 AM America/New_York.
Valid through 8/9/2026 10:15 AM America/New_York.
fzus61 kcle 090749
glfle
expires:202608091415;;870746
open lake forecast for lake erie
national weather service cleveland oh
349 am edt sun aug 9 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 ridge averaging 30.00 inches builds over the area today. three
weak low pressure systems 29.90 inches will move through the
region sunday night through wednesday. high pressure 30.00 inches
will build into the region starting on thursday.
lez162>164-091415-
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-
349 am edt sun aug 9 2026
.today...northwest winds 10 knots or less becoming south. waves
1 foot or less.
.tonight...south winds 5 to 15 knots becoming southwest. a chance
of showers with a slight chance of thunderstorms in the evening,
then showers likely with a chance of thunderstorms after
midnight. waves 1 to 3 feet.
.monday...southwest winds 15 to 20 knots becoming west 10 to
15 knots. showers likely in the morning. waves 1 to 3 feet.
.monday night...west winds 5 to 10 knots becoming southwest. a
chance of showers and thunderstorms in the evening, then showers
likely with a chance of thunderstorms overnight. waves 2 feet or
less.
.tuesday...southwest winds 5 to 10 knots becoming west. showers
likely. waves 2 feet or less.
.wednesday...west winds 5 to 10 knots becoming northwest. a
chance of showers and thunderstorms during the day, then a chance
of showers wednesday night. waves 1 foot or less.
.thursday...northwest winds 5 to 10 knots becoming north. waves
2 feet or less.
winds and waves higher in and near thunderstorms.
$$
(4/9)
Latest Great Lakes Marine Forecast by KCLE
Issued 8/9/2026 3:49 AM America/New_York.
Valid through 8/9/2026 10:15 AM America/New_York.
fzus61 kcle 090749
glfle
expires:202608091415;;870747
open lake forecast for lake erie
national weather service cleveland oh
349 am edt sun aug 9 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 ridge averaging 30.00 inches builds over the area today. three
weak low pressure systems 29.90 inches will move through the
region sunday night through wednesday. high pressure 30.00 inches
will build into the region starting on thursday.
lez165>167-091415-
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-willowick to geneva-on-the-
lake oh beyond 5nm off shoreline to us-canadian border-
349 am edt sun aug 9 2026
.today...north winds 10 knots or less becoming west. waves 2 feet
or less.
.tonight...south winds 5 to 15 knots becoming southwest 15 to
20 knots. a slight chance of showers and thunderstorms late in
the evening. a chance of showers and thunderstorms after
midnight, then showers likely with a chance of thunderstorms
late. waves 1 to 3 feet.
.monday...southwest winds 15 to 20 knots becoming west 10 to
15 knots. showers likely with a chance of thunderstorms in the
morning. waves 3 to 5 feet subsiding to 2 to 4 feet.
.monday night...west winds 5 to 10 knots becoming southwest. a
chance of showers and thunderstorms. waves 1 to 3 feet.
.tuesday...southwest winds 10 knots or less becoming west.
showers likely during the day, then a chance of showers tuesday
night. waves 2 feet or less.
.wednesday...west winds 5 to 15 knots becoming northwest. a
chance of showers and thunderstorms. waves 2 feet or less.
.thursday...northwest winds 10 to 15 knots becoming north. waves
1 to 2 feet.
winds and waves higher in and near thunderstorms.
$$
(5/9)
Latest Great Lakes Marine Forecast by KCLE
Issued 8/9/2026 3:49 AM America/New_York.
Valid through 8/9/2026 10:15 AM America/New_York.
fzus61 kcle 090749
glfle
expires:202608091415;;870748
open lake forecast for lake erie
national weather service cleveland oh
349 am edt sun aug 9 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 ridge averaging 30.00 inches builds over the area today. three
weak low pressure systems 29.90 inches will move through the
region sunday night through wednesday. high pressure 30.00 inches
will build into the region starting on thursday.
lez061-168-169-091415-
ripley to buffalo ny extending from 5nm off shoreline to us-
canadian border-geneva-on-the-
lake to conneaut oh beyond 5 nm off shoreline to us-
canadian border-
conneaut oh to ripley ny beyond 5 nm off shoreline to us-
canadian border-
349 am edt sun aug 9 2026
.today...north winds less than 10 knots becoming northwest. waves
2 feet or less.
.tonight...light and variable winds becoming southwest 15 to
20 knots. a slight chance of showers and thunderstorms late in
the evening. a chance of showers and thunderstorms after
midnight. waves 1 foot or less building to 1 to 3 feet.
.monday...southwest winds 15 to 20 knots becoming west 10 to
15 knots. showers likely with a chance of thunderstorms in the
morning. waves 2 to 4 feet building to 3 to 5 feet.
.monday night...west winds 5 to 15 knots becoming southwest. a
chance of showers. waves 2 to 4 feet subsiding to 1 to 2 feet.
.tuesday...southwest winds 10 knots or less becoming west. a
chance of showers. waves 1 to 2 feet.
.wednesday...west winds 10 knots or less becoming northwest. a
chance of showers and thunderstorms. waves 2 feet or less.
.thursday...northwest winds 5 to 10 knots becoming north. waves
2 feet or less.
winds and waves higher in and near thunderstorms.
$$
(6/9)
Latest Great Lakes Marine Forecast by KDTX
Issued 8/9/2026 2:47 AM America/New_York.
Valid through 8/9/2026 11:00 AM America/New_York.
fzus63 kdtx 090647
glflh
expires:202608091500;;868624
open lake forecast for lake huron
national weather service detroit/pontiac mi
247 am edt sun aug 9 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 around 30.00 inches slides east through
the ohio valley tonight through sunday, allowing winds to become
southerly once again for sunday. sunday evening through early
next week an active pattern with a stalled frontal boundary
draped over the southern great lakes region brings back chances
for organized thunderstorms to the region. by the end of next
week, high pressure around 30.1 inches builds south from central
canada.
lhz362-363-091500-
lake huron from presque isle light to sturgeon point mi beyond
5nm off shore-
lake huron from sturgeon point to alabaster mi beyond 5nm off
shore-
247 am edt sun aug 9 2026
.today...southwest winds 5 to 10 knots becoming south 10 to
15 knots in the afternoon. waves 1 to 3 feet building to 2 to
4 feet late in the afternoon.
.tonight...southeast winds 10 to 15 knots becoming south 5 to
10 knots by midnight...then veering to the southwest early in the
morning. a chance of showers. waves 2 to 4 feet subsiding to 1 to
3 feet after midnight.
.monday...west winds 5 to 10 knots. a chance of showers in the
morning. waves 2 feet or less.
.monday night...north winds 5 to 10 knots early in the evening
becoming light and variable. waves 2 feet or less.
.tuesday...light and variable winds. waves 2 feet or less.
.wednesday...light and variable winds becoming north 5 to
10 knots early in the evening...then backing to the northwest by
midnight. waves 2 feet or less.
.thursday...northwest winds 10 to 15 knots. waves 1 to 3 feet
building to 3 to 5 feet .
$$
(7/9)
Latest Great Lakes Marine Forecast by KDTX
Issued 8/9/2026 2:47 AM America/New_York.
Valid through 8/9/2026 11:00 AM America/New_York.
fzus63 kdtx 090647
glflh
expires:202608091500;;868623
open lake forecast for lake huron
national weather service detroit/pontiac mi
247 am edt sun aug 9 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 around 30.00 inches slides east through
the ohio valley tonight through sunday, allowing winds to become
southerly once again for sunday. sunday evening through early
next week an active pattern with a stalled frontal boundary
draped over the southern great lakes region brings back chances
for organized thunderstorms to the region. by the end of next
week, high pressure around 30.1 inches builds south from central
canada.
lhz361-091500-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
247 am edt sun aug 9 2026
.today...southwest winds 5 to 10 knots backing to the northeast
late in the afternoon. waves 2 feet or less.
.tonight...light and variable winds. a chance of showers after
midnight. waves 2 feet or less.
.monday...northwest winds 5 to 10 knots. waves 2 feet or less.
.monday night...west winds 5 to 10 knots becoming light and
variable. waves 2 feet or less.
.tuesday...light and variable winds. waves 2 feet or less.
.wednesday...light and variable winds becoming northwest 5 to
10 knots . waves 2 feet or less.
.thursday...northwest winds 10 to 15 knots becoming west 15 to
20 knots early in the evening...then becoming northwest 10 to
15 knots by midnight. waves 1 to 3 feet building to 3 to 5 feet .
$$
(8/9)
Latest Great Lakes Marine Forecast by KDTX
Issued 8/9/2026 2:47 AM America/New_York.
Valid through 8/9/2026 11:00 AM America/New_York.
fzus63 kdtx 090647
glflh
expires:202608091500;;868625
open lake forecast for lake huron
national weather service detroit/pontiac mi
247 am edt sun aug 9 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 around 30.00 inches slides east through
the ohio valley tonight through sunday, allowing winds to become
southerly once again for sunday. sunday evening through early
next week an active pattern with a stalled frontal boundary
draped over the southern great lakes region brings back chances
for organized thunderstorms to the region. by the end of next
week, high pressure around 30.1 inches builds south from central
canada.
lhz462>464-091500-
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-
247 am edt sun aug 9 2026
.today...light and variable winds becoming southwest 5 to
10 knots in the late morning and early afternoon...then backing
to the south late in the afternoon. waves 2 feet or less.
.tonight...south winds 5 to 10 knots increasing to 10 to 15 knots
by midnight...then becoming southwest 5 to 10 knots early in the
morning. a chance of showers after midnight. waves 1 to 3 feet.
.monday...west winds 5 to 10 knots veering to the northwest early
in the afternoon. a chance of showers in the morning. waves
2 feet or less.
.monday night...light and variable winds. waves 2 feet or less.
.tuesday...light and variable winds in the morning becoming east
5 to 10 knots...then backing to the northeast late in the
afternoon becoming light and variable. a chance of showers. waves
2 feet or less.
.wednesday...north winds 5 to 10 knots backing to the west in the
late morning and early afternoon...then veering to the north .
waves 2 feet or less.
.thursday...northwest winds 10 to 15 knots decreasing to 5 to
10 knots early in the evening...then becoming northwest 5 to
10 knots by midnight. waves 2 feet or less building to 2 to
4 feet by midnight.
$$
(9/9)
Latest Great Lakes Marine Forecast by KDTX
Issued 8/9/2026 2:47 AM America/New_York.
Valid through 8/9/2026 11:00 AM America/New_York.
fzus63 kdtx 090647
glfsc
expires:202608091500;;868627
lake st clair forecast
national weather service detroit/pontiac mi
247 am edt sun aug 9 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 around 30.00 inches slides east through
the ohio valley tonight through sunday, allowing winds to become
southerly once again for sunday. sunday evening through early
next week an active pattern with a stalled frontal boundary
draped over the southern great lakes region brings back chances
for organized thunderstorms to the region. by the end of next
week, high pressure around 30.1 inches builds south from central
canada.
lcz460-091500-
lake st clair-
247 am edt sun aug 9 2026
.today...north winds 5 to 10 knots early in the morning becoming
light and variable...then becoming south 5 to 10 knots early in the
afternoon increasing to 10 to 15 knots. mostly sunny. waves 2 feet
or less.
.tonight...southwest winds 10 to 15 knots. partly cloudy early in
the evening. a chance of showers late in the evening. showers and a
chance of thunderstorms after midnight. waves 2 feet or less.
.monday...west winds 10 to 15 knots diminishing to 5 to 10 knots
early in the afternoon. mostly cloudy until late afternoon then
clearing. a chance of showers early in the morning. waves 2 feet or
less.
.monday night...west winds 5 to 10 knots backing to the south after
midnight. partly cloudy. a chance of light showers after midnight.
waves 2 feet or less.
.tuesday...southwest winds 5 to 10 knots backing to the northeast in
the evening. partly sunny with a chance of light showers in the
morning...then partly cloudy with a chance of showers and
thunderstorms in the afternoon and evening. waves 2 feet or less.
.wednesday...northwest winds 5 to 10 knots. partly cloudy. a chance
of showers and thunderstorms. waves 2 feet or less.
.thursday...northeast winds 10 to 15 knots. partly cloudy. waves 2
feet or less.
$$
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