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Latest Great Lakes Marine Forecast by KBUF
Issued 8/21/2026 4:02 AM America/New_York.
Valid through 8/21/2026 11:00 AM America/New_York.
fzus61 kbuf 210802
glflo
expires:202608211500;;096742
open lake forecast for lake ontario
national weather service buffalo ny
402 am edt fri aug 21 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 30.1 inch high over southern quebec will slide across new england
today, then into the canadian maritimes saturday. an elongated 29.7
inch low will slowly make its way from the central great lakes to
western quebec saturday and sunday, while pushing its associated
warm and cold fronts across the lake between saturday night and
sunday morning. the low will wobble about western quebec through
monday, then wil eject northeastward into labrador on tuesday while
a 30.1 inch high builds eastward across the ohio valley.
loz062-211500-
lake ontario open waters from the niagara river to hamlin beach-
402 am edt fri aug 21 2026
.today...northeast winds 10 knots or less becoming east. waves
1 foot or less.
.tonight...east winds around 10 knots becoming southeast. waves
1 to 2 feet.
.saturday...southeast winds 5 to 10 knots becoming east. a chance
of showers and thunderstorms in the afternoon. waves 1 foot or
less.
.saturday night...southeast winds 5 to 10 knots becoming
southwest. showers with a chance of thunderstorms. waves 1 to
2 feet.
.sunday...west winds 10 to 15 knots increasing to 15 to 20 knots.
showers with a chance of thunderstorms. waves 1 to 3 feet
building to 3 to 5 feet, then subsiding to 2 to 4 feet.
.monday...west winds 15 to 20 knots diminishing to 10 to
15 knots. a chance of showers. waves 2 to 4 feet.
.tuesday...west winds 5 to 15 knots becoming southwest. waves
1 to 3 feet.
winds and waves higher in and near thunderstorms.
$$
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Latest Great Lakes Marine Forecast by KDTX
Issued 8/21/2026 4:08 AM America/New_York.
Valid through 8/21/2026 12:15 PM America/New_York.
fzus63 kdtx 210808
glflh
expires:202608211615;;097370
open lake forecast for lake huron
national weather service detroit/pontiac mi
408 am edt fri aug 21 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, 30.00 inches, maintains influence
across the central and eastern great lakes today. the next low
pressure system then arrives saturday, dragging a cold front
across the area and increasing shower and thunderstorm chances.
post-frontal northwest flow leads to gusty winds sunday.
lhz361>363-211615-
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-
408 am edt fri aug 21 2026
.today...south winds 5 to 10 knots becoming southeast 10 to
15 knots in the late morning and afternoon. a chance of showers
in the afternoon. waves 1 to 3 feet building to 2 to 4 feet in
the afternoon.
.tonight...southeast winds 10 to 15 knots. a chance of showers. a
chance of waterspouts after midnight. waves 3 to 5 feet.
.saturday...southwest winds 5 to 10 knots veering to the west
early in the afternoon. a chance of waterspouts in the morning. a
chance of showers. waves 2 to 4 feet subsiding to 1 to 3 feet in
the late morning and afternoon.
.saturday night...northwest winds 10 to 15 knots increasing to
15 to 20 knots in the late evening and overnight. a chance of
showers. waves 4 to 6 feet. waves occasionally around 8 feet.
.sunday...northwest winds 20 to 25 knots decreasing to 15 to
20 knots late in the evening. gusts to 30 knots. a chance of
showers in the morning. a chance of waterspouts in the morning.
waves 8 to 12 feet. waves occasionally around 15 feet.
.monday...northwest winds 15 to 20 knots decreasing to 5 to
10 knots. waves 4 to 6 feet. waves occasionally around 8 feet.
.tuesday...west winds 5 to 10 knots backing to the south . waves
1 to 3 feet.
$$
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Latest Great Lakes Marine Forecast by KDTX
Issued 8/21/2026 4:08 AM America/New_York.
Valid through 8/21/2026 12:15 PM America/New_York.
fzus63 kdtx 210808
glflh
expires:202608211615;;097371
open lake forecast for lake huron
national weather service detroit/pontiac mi
408 am edt fri aug 21 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, 30.00 inches, maintains influence
across the central and eastern great lakes today. the next low
pressure system then arrives saturday, dragging a cold front
across the area and increasing shower and thunderstorm chances.
post-frontal northwest flow leads to gusty winds sunday.
lhz462>464-211615-
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-
408 am edt fri aug 21 2026
.today...southeast winds 5 to 10 knots. waves 2 feet or less.
.tonight...southeast winds 10 to 15 knots. a chance of showers
after midnight. waves 1 to 3 feet.
.saturday...south winds 10 to 15 knots decreasing to 5 to
10 knots in the late morning and afternoon. a chance of showers
in the morning...then showers and a chance of thunderstorms in
the afternoon. a chance of waterspouts. waves 1 to 3 feet.
.saturday night...northwest winds 5 to 10 knots increasing to
15 to 20 knots in the late evening and overnight. showers likely.
waves 1 to 3 feet building to 4 to 6 feet in the late evening and
overnight. waves occasionally around 8 feet.
.sunday...northwest winds 15 to 20 knots with gusts to around
30 knots increasing to 20 to 25 knots with gusts to around
30 knots late in the morning...then decreasing to 15 to 20 knots
with gusts to around 30 knots late in the afternoon. a chance of
waterspouts. showers likely in the morning. a chance of showers.
waves 6 to 9 feet. waves occasionally around 11 feet.
.monday...northwest winds 15 to 20 knots decreasing to 5 to
10 knots. a chance of showers early in the morning. waves 4 to
6 feet subsiding to 1 to 3 feet by midnight. waves occasionally
around 8 feet.
.tuesday...west winds 5 to 10 knots backing to the south early in
the evening...then increasing to 10 to 15 knots by midnight.
waves 2 feet or less.
$$
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