(1/8)
Latest Great Lakes Marine Forecast by KBUF
Issued 4/18/2026 10:10 PM America/New_York.
Valid through 4/19/2026 5:00 AM America/New_York.
fzus61 kbuf 190210
glflo
expires:202604190900;;610881
open lake forecast for lake ontario
national weather service buffalo ny
1009 pm edt sat apr 18 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 29.5 inch low east of lake superior this afternoon
will move to james bay and deepen to 29.0 inches, while pushing a
trailing strong cold front across the lake this afternoon and
evening. a 30.4 inch high will then settle southeast across the
great lakes sunday through monday night, before sliding off the mid-
atlantic coast tuesday. a 29.4 inch low over lower hudson bay
tuesday, will weaken to 29.9 inches by wednesday, while pushing an
attendant weak cold front across the lake tuesday night. a 30.2 inch
high will then build across the great lakes region wednesday and
thursday. a warm front will then approach the lake by friday.
loz063>065-190900-
lake ontario open waters from hamlin beach to the saint lawrence
river-
1009 pm edt sat apr 18 2026
.overnight...west winds 15 to 20 knots becoming northwest
10 to 15 knots. rain showers. waves 2 to 4 feet.
.sunday...west winds 10 to 15 knots increasing to 15 to 20 knots.
rain and snow showers likely early. waves 2 to 4 feet building to
3 to 5 feet.
.sunday night...west winds 15 to 20 knots. waves 3 to 6 feet.
.monday...northwest winds 15 to 20 knots becoming west. waves
3 to 5 feet subsiding to 2 to 4 feet.
.monday night...west winds 15 to 20 knots diminishing to 5 to
15 knots. waves 2 to 4 feet subsiding to 1 to 3 feet.
.tuesday...south winds 10 to 15 knots. waves 1 to 2 feet.
.wednesday...north winds 5 to 15 knots becoming northwest. waves
2 feet or less.
.thursday...north winds 10 knots or less becoming east. waves
1 foot or less.
$$
(2/8)
Latest Great Lakes Marine Forecast by KBUF
Issued 4/18/2026 10:10 PM America/New_York.
Valid through 4/19/2026 5:00 AM America/New_York.
fzus61 kbuf 190210
glflo
expires:202604190900;;610880
open lake forecast for lake ontario
national weather service buffalo ny
1009 pm edt sat apr 18 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 29.5 inch low east of lake superior this afternoon
will move to james bay and deepen to 29.0 inches, while pushing a
trailing strong cold front across the lake this afternoon and
evening. a 30.4 inch high will then settle southeast across the
great lakes sunday through monday night, before sliding off the mid-
atlantic coast tuesday. a 29.4 inch low over lower hudson bay
tuesday, will weaken to 29.9 inches by wednesday, while pushing an
attendant weak cold front across the lake tuesday night. a 30.2 inch
high will then build across the great lakes region wednesday and
thursday. a warm front will then approach the lake by friday.
loz062-190900-
lake ontario open waters from the niagara river to hamlin beach-
1009 pm edt sat apr 18 2026
.overnight...northwest winds 10 to 15 knots. a chance of
rain showers. a chance of rain and snow showers
late. waves 2 to 3 feet.
.sunday...west winds 10 to 15 knots increasing to 15 to 20 knots.
a chance of rain showers late. waves 2 to 4 feet.
.sunday night...west winds 15 to 20 knots becoming northwest. a
chance of rain showers in the evening. waves 2 to 4 feet.
.monday...northwest winds 15 to 20 knots becoming west 10 to
15 knots. waves 2 to 4 feet subsiding to 1 to 3 feet.
.monday night...northwest winds 5 to 15 knots becoming southwest.
waves 1 to 3 feet.
.tuesday...south winds 15 to 20 knots becoming west 10 to
15 knots. waves 1 to 3 feet.
.wednesday...north winds 10 knots or less. waves 1 foot or less.
.thursday...northeast winds 10 knots or less becoming east. waves
1 foot or less.
$$
(3/8)
Latest Great Lakes Marine Forecast by KCLE
Issued 4/18/2026 9:27 PM America/New_York.
Valid through 4/19/2026 4:15 AM America/New_York.
fzus61 kcle 190127
glfle
expires:202604190815;;609853
open lake forecast for lake erie
national weather service cleveland oh
927 pm edt sat apr 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...
pressure increases to an average of 30.00 inches by sunday morning.
another cold front moves across the lake sunday afternoon before
high pressure 30.40 inches moves overhead sunday night into
monday. another cold front will cross the lake tuesday night or
early wednesday before high pressure returns wednesday and
thursday.
lez061-169-190815-
ripley to buffalo ny extending from 5nm off shoreline to us-
canadian border-
conneaut oh to ripley ny beyond 5 nm off shoreline to us-
canadian border-
927 pm edt sat apr 18 2026
.rest of tonight...west winds 10 to 15 knots. a chance of rain
showers. waves 2 to 4 feet.
.sunday...west winds 10 to 15 knots increasing to 15 to 20 knots.
a slight chance of rain and snow showers late. waves 2 to 4 feet.
.sunday night...west winds 15 to 20 knots becoming northwest
10 to 15 knots. a chance of rain and snow showers in the evening.
waves 2 to 4 feet subsiding to 1 to 2 feet.
.monday...northwest winds around 10 knots becoming west. waves
1 to 2 feet.
.monday night...west winds 10 knots or less becoming south. waves
around 1 foot.
.tuesday...south winds 5 to 15 knots becoming southwest. waves
1 to 2 feet.
.wednesday...north winds 5 to 10 knots becoming light and
variable. waves 2 feet or less.
.thursday...east winds 10 knots or less becoming southeast. waves
1 foot or less.
$$
(4/8)
Latest Great Lakes Marine Forecast by KCLE
Issued 4/18/2026 9:27 PM America/New_York.
Valid through 4/19/2026 4:15 AM America/New_York.
fzus61 kcle 190127
glfle
expires:202604190815;;609851
open lake forecast for lake erie
national weather service cleveland oh
927 pm edt sat apr 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...
pressure increases to an average of 30.00 inches by sunday morning.
another cold front moves across the lake sunday afternoon before
high pressure 30.40 inches moves overhead sunday night into
monday. another cold front will cross the lake tuesday night or
early wednesday before high pressure returns wednesday and
thursday.
lez162>164-190815-
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-
927 pm edt sat apr 18 2026
.rest of tonight...northwest winds 15 to 20 knots becoming west.
a slight chance of showers late this evening. waves 2 to 4 feet.
.sunday...west winds 15 to 25 knots. a chance of showers in the
afternoon. waves 2 to 4 feet.
.sunday night...northwest winds 15 to 25 knots becoming north and
diminishing to 10 to 15 knots. a chance of rain showers in the
evening. waves 2 to 4 feet subsiding to 1 to 3 feet.
.monday...north winds 5 to 15 knots becoming northwest less than
10 knots. waves 2 feet or less.
.monday night...southeast winds 10 knots or less becoming south
and increasing to 15 to 20 knots overnight. waves 1 to 3 feet.
.tuesday...south winds 15 to 20 knots becoming west 10 to
15 knots. a chance of rain showers tuesday night. waves 1 to
3 feet.
.wednesday...north winds 10 to 15 knots becoming southeast
10 knots or less. waves 2 feet or less.
.thursday...southeast winds 5 to 15 knots becoming south 15 to
20 knots. waves 2 feet or less.
$$
(5/8)
Latest Great Lakes Marine Forecast by KCLE
Issued 4/18/2026 9:27 PM America/New_York.
Valid through 4/19/2026 4:15 AM America/New_York.
fzus61 kcle 190127
glfle
expires:202604190815;;609852
open lake forecast for lake erie
national weather service cleveland oh
927 pm edt sat apr 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...
pressure increases to an average of 30.00 inches by sunday morning.
another cold front moves across the lake sunday afternoon before
high pressure 30.40 inches moves overhead sunday night into
monday. another cold front will cross the lake tuesday night or
early wednesday before high pressure returns wednesday and
thursday.
lez165>168-190815-
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-geneva-on-
the-lake to conneaut oh beyond 5 nm off shoreline to us-
canadian border-
927 pm edt sat apr 18 2026
.rest of tonight...west winds 15 to 20 knots. a chance of showers
late this evening. waves 2 to 4 feet.
.sunday...west winds 15 to 20 knots. a slight chance of rain
showers late. waves 2 to 4 feet.
.sunday night...west winds 15 to 20 knots becoming north 10 to
15 knots. a chance of rain showers in the evening. waves 2 to
4 feet.
.monday...northwest winds 5 to 15 knots. waves 1 to 3 feet.
.monday night...southwest winds 5 to 15 knots becoming south.
waves 1 to 3 feet.
.tuesday...south winds 15 to 20 knots becoming west 10 to
15 knots. a chance of rain showers tuesday night. waves 2 to
4 feet subsiding to 1 to 3 feet.
.wednesday...northwest winds 5 to 15 knots becoming east 10 knots
or less. waves 1 to 3 feet subsiding to 1 foot or less.
.thursday...southeast winds 5 to 15 knots becoming south. waves
2 feet or less.
$$
(6/8)
Latest Great Lakes Marine Forecast by KDTX
Issued 4/18/2026 10:09 PM America/New_York.
Valid through 4/19/2026 6:15 AM America/New_York.
fzus63 kdtx 190209
glfsc
expires:202604191015;;610786
lake st clair forecast
national weather service detroit/pontiac mi
1009 pm edt sat apr 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...colder air filters into the region this weekend,
maintaining gusty west to northwest winds. a cold front tracks
through the region on sunday, then high pressure settles in on
monday. milder southerly flow early tuesday precedes the next
cold front set to pass through by late tuesday.
lcz460-191015-
lake st clair-
1009 pm edt sat apr 18 2026
...small craft advisory in effect from 10 am edt sunday through
sunday evening...
.rest of tonight...west winds 15 to 20 knots diminishing to 10 to 15
knots after midnight. mostly clear. waves 2 feet or less.
.sunday...west winds 10 to 15 knots increasing to 15 to 20 knots in
the afternoon. sunny in the morning...then partly sunny with a
chance of light showers in the afternoon. waves 1 to 3 feet.
.sunday night...northwest winds 15 to 20 knots becoming north 10 to
15 knots in the late evening and overnight. mostly clear. a chance
of light showers early in the evening. waves 2 feet or less.
.monday...northwest winds 10 to 15 knots diminishing to 5 to 10
knots in the late morning and afternoon. mostly sunny. waves 2 feet
or less.
.monday night...south winds 5 to 10 knots increasing to 10 to 15
knots in the late evening and overnight. mostly clear. waves 2 feet
or less.
.tuesday...south winds 15 to 20 knots becoming southwest 10 to 15
knots in the evening. partly sunny becoming mostly sunny in the
afternoon becoming partly cloudy. waves 1 to 3 feet.
.wednesday...northeast winds 10 to 15 knots. partly cloudy. waves 2
feet or less.
.thursday...southeast winds 10 to 15 knots. mostly clear. waves 2
feet or less.
$$
(7/8)
Latest Great Lakes Marine Forecast by KDTX
Issued 4/18/2026 10:05 PM America/New_York.
Valid through 4/19/2026 6:15 AM America/New_York.
fzus63 kdtx 190205
glflh
expires:202604191015;;610648
open lake forecast for lake huron
national weather service detroit/pontiac mi
1005 pm edt sat apr 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...colder air filters into the region this weekend,
maintaining gusty west to northwest winds. a cold front tracks
through the region on sunday, then high pressure settles in on
monday. milder southerly flow early tuesday precedes the next
cold front set to pass through by late tuesday.
lhz462>464-191015-
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-
1005 pm edt sat apr 18 2026
.rest of tonight...west winds 10 to 15 knots decreasing to 5 to
10 knots early in the morning. waves 1 to 3 feet.
.sunday...west winds 5 to 10 knots increasing to 10 to 15 knots
in the late morning and early afternoon...then veering to the
west 10 to 15 knots late in the afternoon. a chance of showers in
the afternoon. waves 1 to 3 feet building to 2 to 4 feet late in
the afternoon.
.sunday night...northwest winds 15 to 20 knots. waves 6 to
9 feet. waves occasionally around 12 feet.
.monday...northwest winds 15 to 20 knots decreasing to 5 to
10 knots. waves 4 to 6 feet. waves occasionally around 8 feet.
.monday night...east winds 5 to 10 knots becoming south 10 to
15 knots by midnight...then increasing to 15 to 20 knots after
midnight. waves 1 to 3 feet building to 4 to 6 feet after
midnight. waves occasionally around 8 feet.
.tuesday...south winds 20 to 25 knots with gusts to around
30 knots decreasing to 15 to 20 knots late in the morning...then
decreasing to 10 to 15 knots late in the afternoon veering to the
northwest late in the evening. waves 6 to 9 feet subsiding to
2 to 4 feet. waves occasionally around 12 feet.
.wednesday...north winds 10 to 15 knots becoming light and
variable. waves 1 to 3 feet.
.thursday...southeast winds 5 to 10 knots increasing to 10 to
15 knots . waves 1 to 3 feet building to 2 to 4 feet by midnight.
$$
(8/8)
Latest Great Lakes Marine Forecast by KDTX
Issued 4/18/2026 10:05 PM America/New_York.
Valid through 4/19/2026 6:15 AM America/New_York.
fzus63 kdtx 190205
glflh
expires:202604191015;;610647
open lake forecast for lake huron
national weather service detroit/pontiac mi
1005 pm edt sat apr 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...colder air filters into the region this weekend,
maintaining gusty west to northwest winds. a cold front tracks
through the region on sunday, then high pressure settles in on
monday. milder southerly flow early tuesday precedes the next
cold front set to pass through by late tuesday.
lhz361>363-191015-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
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-
1005 pm edt sat apr 18 2026
.rest of tonight...west winds 10 to 15 knots becoming southwest
5 to 10 knots early in the morning. waves 3 to 5 feet.
.sunday...southwest winds 10 to 15 knots becoming west 15 to
20 knots early in the afternoon...then becoming northwest 20 to
25 knots with gusts to around 30 knots late in the afternoon.
waves 4 to 6 feet building to 6 to 9 feet late in the afternoon.
waves occasionally around 12 feet.
.sunday night...northwest winds 20 to 25 knots with gusts to
around 30 knots decreasing to 15 to 20 knots after midnight.
waves 8 to 12 feet. waves occasionally around 15 feet.
.monday...northwest winds 10 to 15 knots decreasing to 5 to
10 knots in the late morning and afternoon. waves 4 to 6 feet
subsiding to 2 to 4 feet early in the afternoon. waves
occasionally around 8 feet.
.monday night...southeast winds 10 to 15 knots becoming south
15 to 20 knots in the late evening and overnight. waves 1 to
3 feet building to 4 to 6 feet in the late evening and overnight.
waves occasionally around 8 feet.
.tuesday...south winds 20 to 25 knots with gusts to around
30 knots decreasing to 15 to 20 knots late in the morning...then
decreasing to 10 to 15 knots late in the afternoon veering to the
northwest late in the evening. waves 6 to 9 feet subsiding to
3 to 5 feet late in the evening. waves occasionally around
12 feet.
.wednesday...north winds 10 to 15 knots becoming northeast 5 to
10 knots in the late morning and early afternoon...then becoming
light and variable early in the evening becoming east 5 to
10 knots by midnight. waves 2 to 4 feet subsiding to 1 to 3 feet.
.thursday...southeast winds 5 to 10 knots increasing to 15 to
20 knots. waves 1 to 3 feet building to 5 to 7 feet. waves
occasionally around 10 feet.
$$
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