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(1/8)
Latest Great Lakes Marine Forecast by KBUF
Issued 5/4/2026 10:02 PM America/New_York.
Valid through 5/5/2026 5:00 AM America/New_York.
fzus61 kbuf 050202
glflo
expires:202605050900;;028236
open lake forecast for lake ontario
national weather service buffalo ny
1002 pm edt mon may 4 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 29.1 inch low over hudson bay tonight through tuesday
will weaken to 29.3 inches as it moves to northern quebec through
wednesday. its trailing wavy cold front will slowly cross the lake
late tuesday, then will drift across new england wednesday and out
to sea thursday. a 30.1 inch high over the tennessee and ohio
valleys thursday night will slide to the mid-atlantic coastline
friday.
loz063>065-050900-
lake ontario open waters from hamlin beach to the saint lawrence
river-
1002 pm edt mon may 4 2026
.overnight...south winds 15 to 20 knots. a chance of
showers. waves 1 to 3 feet building to 2 to
4 feet.
.tuesday...southwest winds 15 to 20 knots becoming west 10 to
15 knots. a chance of showers early, then showers likely late in
the morning. showers likely with a chance of thunderstorms in the
afternoon. waves 2 to 4 feet.
.tuesday night...west winds 5 to 15 knots becoming south less
than 10 knots. rain with a chance of thunderstorms in the
evening, then rain overnight. waves 1 to 3 feet subsiding to
1 foot or less.
.wednesday...north winds 5 to 10 knots becoming northwest. rain
in the morning, then showers in the afternoon. waves 1 foot or
less.
.wednesday night...west winds 5 to 10 knots. a chance of showers.
waves 2 feet or less.
.thursday...west winds 5 to 15 knots. waves 1 to 2 feet.
.friday...west winds 5 to 15 knots becoming southwest. waves 1 to
3 feet.
.saturday...southwest winds 5 to 15 knots. a chance of showers.
waves 1 to 2 feet.
winds and waves higher in and near thunderstorms.
$$
(2/8)
Latest Great Lakes Marine Forecast by KBUF
Issued 5/4/2026 10:02 PM America/New_York.
Valid through 5/5/2026 5:00 AM America/New_York.
fzus61 kbuf 050202
glflo
expires:202605050900;;028235
open lake forecast for lake ontario
national weather service buffalo ny
1002 pm edt mon may 4 2026
for waters beyond five nautical miles of shore on lake ontario
waves are the significant wave height - the average of the highest
1/3 of the wave spectrum. occasional wave height is the average of
the highest 1/10 of the wave spectrum.
.synopsis...a 29.1 inch low over hudson bay tonight through tuesday
will weaken to 29.3 inches as it moves to northern quebec through
wednesday. its trailing wavy cold front will slowly cross the lake
late tuesday, then will drift across new england wednesday and out
to sea thursday. a 30.1 inch high over the tennessee and ohio
valleys thursday night will slide to the mid-atlantic coastline
friday.
loz062-050900-
lake ontario open waters from the niagara river to hamlin beach-
1002 pm edt mon may 4 2026
.overnight...south winds 15 to 20 knots becoming southwest.
a chance of showers. waves 2 to 4 feet building to
3 to 5 feet.
.tuesday...southwest winds 15 to 20 knots becoming west 10 to
15 knots. a chance of showers through early afternoon, then
showers likely late. waves 3 to 5 feet subsiding to 1 to 3 feet.
.tuesday night...southwest winds 5 to 10 knots becoming east.
rain likely in the evening, then rain overnight. waves 2 feet or
less.
.wednesday...northeast winds 5 to 10 knots becoming west. rain in
the morning, then showers likely in the afternoon. waves 1 foot
or less.
.wednesday night...west winds 5 to 10 knots. waves 1 foot or
less.
.thursday...west winds 5 to 10 knots. waves 1 foot or less.
.friday...west winds 5 to 10 knots becoming southwest. waves 1 to
2 feet.
.saturday...southwest winds 5 to 10 knots becoming west. a chance
of showers. waves 1 to 2 feet.
$$
(3/8)
Latest Great Lakes Marine Forecast by KCLE
Issued 5/4/2026 9:28 PM America/New_York.
Valid through 5/5/2026 4:15 AM America/New_York.
fzus61 kcle 050128
glfle
expires:202605050815;;027562
open lake forecast for lake erie
national weather service cleveland oh
928 pm edt mon may 4 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 cold front will move east across lake erie during the day
tuesday before exiting to the east tuesday evening. high pressure
30.10 inches will slowly build east over the region wednesday and
thursday with low pressure 29.90 inches moving east across the
great lakes friday and saturday.
lez162>166-050815-
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-
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-
928 pm edt mon may 4 2026
.rest of tonight...southwest winds 15 to 20 knots. showers likely
with a chance of thunderstorms, then a chance of showers with a
slight chance of thunderstorms late. waves 3 to 5 feet.
.tuesday...southwest winds 15 to 20 knots becoming northwest 5 to
15 knots. a chance of showers in the morning, then showers with a
chance of thunderstorms in the afternoon. waves 3 to 5 feet
subsiding to 1 to 3 feet.
.tuesday night...northeast winds 5 to 10 knots becoming north.
showers. waves 2 feet or less.
.wednesday...northeast winds 5 to 10 knots becoming north.
showers in the morning, then a chance of showers in the
afternoon. waves 2 feet or less.
.wednesday night...west winds 5 to 10 knots becoming northwest.
waves 1 foot or less.
.thursday...northwest winds 5 to 15 knots becoming west. waves
2 feet or less.
.friday...southwest winds 10 to 15 knots. a chance of showers.
waves 1 to 2 feet.
.saturday...west winds 10 to 15 knots becoming southwest. a
chance of showers during the day. waves 2 feet or less.
winds and waves higher in and near thunderstorms.
$$
(4/8)
Latest Great Lakes Marine Forecast by KCLE
Issued 5/4/2026 9:28 PM America/New_York.
Valid through 5/5/2026 4:15 AM America/New_York.
fzus61 kcle 050128
glfle
expires:202605050815;;027563
open lake forecast for lake erie
national weather service cleveland oh
928 pm edt mon may 4 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 cold front will move east across lake erie during the day
tuesday before exiting to the east tuesday evening. high pressure
30.10 inches will slowly build east over the region wednesday and
thursday with low pressure 29.90 inches moving east across the
great lakes friday and saturday.
lez061-167>169-050815-
ripley to buffalo ny extending from 5nm off shoreline to us-
canadian border-willowick to geneva-on-the-
lake oh beyond 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-
928 pm edt mon may 4 2026
.rest of tonight...southwest winds 15 to 20 knots. showers likely
with a chance of thunderstorms late this evening, then a chance
of showers and thunderstorms after midnight. a chance of showers
with a slight chance of thunderstorms late. waves 3 to 5 feet.
.tuesday...southwest winds 15 to 20 knots becoming northwest 5 to
15 knots. a chance of showers in the morning, then showers likely
with a slight chance of thunderstorms early in the afternoon.
showers with a chance of thunderstorms late. waves 3 to 5 feet
subsiding to 2 to 3 feet.
.tuesday night...northwest winds 5 to 10 knots becoming
northeast. showers with a chance of thunderstorms in the evening,
then showers overnight. waves 1 to 3 feet.
.wednesday...northeast winds 5 to 10 knots becoming north.
showers in the morning, then a chance of showers in the
afternoon. waves 2 feet or less.
.wednesday night...northwest winds 5 to 10 knots. waves 1 foot or
less.
.thursday...northwest winds 5 to 15 knots becoming west. waves
2 feet or less.
.friday...west winds 5 to 15 knots becoming southwest. a chance
of showers. waves 1 to 2 feet.
.saturday...southwest winds 5 to 15 knots becoming west. a chance
of showers during the day. waves 1 to 2 feet.
winds and waves higher in and near thunderstorms.
$$
(5/8)
Latest Great Lakes Marine Forecast by KDTX
Issued 5/4/2026 9:55 PM America/New_York.
Valid through 5/5/2026 6:00 AM America/New_York.
fzus63 kdtx 050155
glfsc
expires:202605051000;;027988
lake st clair forecast
national weather service detroit/pontiac mi
955 pm edt mon may 4 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...north flow turns lighter and more variable tomorrow
afternoon in the wake of a cold front. another low pressure system
organizes well south of the area through wednesday, favoring the
gradual development of northeast winds. as this low moves over the
northeast mid to late week, northeast winds will back from the
northeast to northerly, and eventually take on a more westerly
component by thursday.
lcz460-051000-
lake st clair-
955 pm edt mon may 4 2026
.rest of tonight...southwest winds 15 to 20 knots. partly cloudy
with a chance of light showers by midnight...then mostly cloudy with
a chance of light showers early in the morning. waves 1 to 3 feet.
.tuesday...west winds 10 to 15 knots becoming northwest 5 to 10
knots in the late morning and afternoon. cloudy. a chance of light
showers in the morning...then light showers likely in the afternoon.
waves 2 feet or less.
.tuesday night...west winds 5 to 10 knots veering to the north after
midnight. cloudy. light showers likely ...then a chance of light
showers after midnight. waves 2 feet or less.
.wednesday...north winds 5 to 10 knots. mostly cloudy. a chance of
light showers early in the morning. waves 2 feet or less.
.wednesday night...northeast winds 5 to 10 knots backing to the west
by midnight...then veering to the northwest after midnight. mostly
cloudy becoming partly cloudy. waves 2 feet or less.
.thursday...northwest winds 5 to 10 knots. partly cloudy. waves 2
feet or less.
.friday...southwest winds 10 to 15 knots. partly cloudy. a chance of
showers. waves 2 feet or less.
.saturday...west winds 10 to 15 knots. partly cloudy. a chance of
showers. waves 2 feet or less.
$$
(6/8)
Latest Great Lakes Marine Forecast by KDTX
Issued 5/4/2026 9:54 PM America/New_York.
Valid through 5/5/2026 6:00 AM America/New_York.
fzus63 kdtx 050154
glflh
expires:202605051000;;027984
open lake forecast for lake huron
national weather service detroit/pontiac mi
954 pm edt mon may 4 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...north flow turns lighter and more variable tomorrow
afternoon in the wake of a cold front. another low pressure system
organizes well south of the area through wednesday, favoring the
gradual development of northeast winds. as this low moves over the
northeast mid to late week, northeast winds will back from the
northeast to northerly, and eventually take on a more westerly
component by thursday.
lhz362-363-051000-
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-
954 pm edt mon may 4 2026
.rest of tonight...north winds 10 to 15 knots backing to the
northwest after midnight...then becoming west 5 to 10 knots early
in the morning. waves 3 to 5 feet.
.tuesday...west winds 5 to 10 knots backing to the southwest
early in the afternoon...then veering to the southwest 5 to
10 knots late in the afternoon. waves 2 to 4 feet.
.tuesday night...north winds 5 to 10 knots. waves 2 to 4 feet
subsiding to 1 to 3 feet in the late evening and overnight.
.wednesday...north winds 5 to 10 knots. waves 2 feet or less.
.wednesday night...north winds 5 to 10 knots backing to the
northwest after midnight. waves 1 to 3 feet.
.thursday...west winds 5 to 10 knots backing to the east late in
the afternoon...then veering to the south late in the evening.
waves 2 feet or less.
.friday...west winds 5 to 10 knots backing to the southeast early
in the evening...then veering to the south by midnight. waves
2 feet or less.
.saturday...west winds 5 to 10 knots backing to the southeast
early in the evening...then becoming west 10 to 15 knots by
midnight. waves 1 to 3 feet.
$$
(7/8)
Latest Great Lakes Marine Forecast by KDTX
Issued 5/4/2026 9:54 PM America/New_York.
Valid through 5/5/2026 6:00 AM America/New_York.
fzus63 kdtx 050154
glflh
expires:202605051000;;027985
open lake forecast for lake huron
national weather service detroit/pontiac mi
954 pm edt mon may 4 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...north flow turns lighter and more variable tomorrow
afternoon in the wake of a cold front. another low pressure system
organizes well south of the area through wednesday, favoring the
gradual development of northeast winds. as this low moves over the
northeast mid to late week, northeast winds will back from the
northeast to northerly, and eventually take on a more westerly
component by thursday.
lhz462>464-051000-
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-
954 pm edt mon may 4 2026
.rest of tonight...south winds 15 to 20 knots becoming southwest
10 to 15 knots after midnight...then veering to the northwest
early in the morning. waves 3 to 5 feet.
.tuesday...north winds 5 to 10 knots backing to the west in the
late morning and early afternoon...then backing to the southeast
late in the afternoon. waves 1 to 3 feet.
.tuesday night...southeast winds 5 to 10 knots backing to the
northeast in the late evening and overnight. waves 2 feet or
less.
.wednesday...north winds 5 to 10 knots. waves 2 feet or less.
.wednesday night...north winds 5 to 10 knots early in the evening
becoming light and variable. waves 2 feet or less.
.thursday...north winds 5 to 10 knots veering to the northeast
late in the afternoon...then backing to the southwest late in the
evening. waves 2 feet or less.
.friday...west winds 5 to 10 knots backing to the east early in
the evening...then veering to the south by midnight. waves 2 feet
or less.
.saturday...southwest winds 5 to 10 knots backing to the
southeast early in the evening...then backing to the southeast
5 to 10 knots by midnight. a chance of showers early in the
evening. waves 2 feet or less.
$$
(8/8)
Latest Great Lakes Marine Forecast by KDTX
Issued 5/4/2026 9:54 PM America/New_York.
Valid through 5/5/2026 6:00 AM America/New_York.
fzus63 kdtx 050154
glflh
expires:202605051000;;027983
open lake forecast for lake huron
national weather service detroit/pontiac mi
954 pm edt mon may 4 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...north flow turns lighter and more variable tomorrow
afternoon in the wake of a cold front. another low pressure system
organizes well south of the area through wednesday, favoring the
gradual development of northeast winds. as this low moves over the
northeast mid to late week, northeast winds will back from the
northeast to northerly, and eventually take on a more westerly
component by thursday.
lhz361-051000-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
954 pm edt mon may 4 2026
.rest of tonight...north winds 5 to 10 knots becoming west 10 to
15 knots after midnight. waves 2 to 4 feet subsiding to 1 to
3 feet after midnight.
.tuesday...west winds 10 to 15 knots increasing to 15 to 20 knots
in the late morning and afternoon. waves 2 to 4 feet.
.tuesday night...west winds 10 to 15 knots becoming northwest
5 to 10 knots in the late evening and overnight. waves 2 to
4 feet subsiding to 1 to 3 feet in the late evening and
overnight.
.wednesday...west winds 5 to 10 knots increasing to 10 to
15 knots early in the afternoon. waves 2 feet or less.
.wednesday night...northwest winds 10 to 15 knots decreasing to
5 to 10 knots in the late evening and overnight. waves 1 to
3 feet.
.thursday...west winds 5 to 10 knots backing to the southwest
late in the evening. waves 2 feet or less.
.friday...west winds 5 to 10 knots backing to the south early in
the evening...then veering to the west by midnight. waves 2 feet
or less.
.saturday...west winds 5 to 10 knots increasing to 10 to 15 knots
by midnight. waves 1 to 3 feet.
$$
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