fzus61 kbuf 092002
glflo 
expires:202609100300;;650333

open lake forecast for lake ontario
national weather service buffalo ny
402 pm edt wed sep 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 cold front will cross the lake while averaging 29.8 
inches tonight. behind the cold front, another ridge averaging 30.0 
inches will build from the western great lakes through friday and 
then exit toward new england on saturday. a warm front should sweep 
northeastward across lake ontario saturday night and be followed by 
a cold front sweeping eastward across the lake later on sunday. a 
30.1 inch ridge will then slide east across the lake monday.


loz063>065-100300-
lake ontario open waters from hamlin beach to the saint lawrence
river-
402 pm edt wed sep 9 2026

.tonight...southwest winds 15 to 20 knots becoming west. showers
with a chance of thunderstorms early, then showers likely late
this evening. a chance of showers after midnight. waves 2 to
4 feet building to 3 to 5 feet. 
.thursday...west winds 15 to 20 knots. waves 3 to 6 feet. 
.thursday night...northwest winds 15 to 20 knots diminishing to
5 to 15 knots. waves 3 to 6 feet subsiding to 2 to 4 feet. 
.friday...northwest winds 10 knots or less becoming west. waves
2 feet or less. 
.friday night...west winds 5 to 10 knots becoming south. waves
1 foot or less. 
.saturday...south winds 10 to 15 knots increasing to 15 to
20 knots. waves 1 to 3 feet. 
.sunday...southwest winds 10 to 15 knots becoming northwest.
waves 1 to 3 feet. 
.monday...north winds 5 to 10 knots becoming south and increasing
to 15 to 20 knots. waves 1 to 3 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kbuf 092002
glflo 
expires:202609100300;;650332

open lake forecast for lake ontario
national weather service buffalo ny
402 pm edt wed sep 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 cold front will cross the lake while averaging 29.8 
inches tonight. behind the cold front, another ridge averaging 30.0 
inches will build from the western great lakes through friday and 
then exit toward new england on saturday. a warm front should sweep 
northeastward across lake ontario saturday night and be followed by 
a cold front sweeping eastward across the lake later on sunday. a 
30.1 inch ridge will then slide east across the lake monday.


loz062-100300-
lake ontario open waters from the niagara river to hamlin beach-
402 pm edt wed sep 9 2026

.tonight...southwest winds 15 to 20 knots becoming west. showers
likely early, then a chance of showers late this evening. waves
3 to 5 feet subsiding to 2 to 4 feet. 
.thursday...west winds 10 to 15 knots. waves 2 to 4 feet. 
.thursday night...northwest winds 15 to 20 knots diminishing to
10 to 15 knots. waves 2 to 4 feet subsiding to 1 to 3 feet. 
.friday...northwest winds 10 knots or less becoming southwest.
waves 2 feet or less. 
.friday night...southwest winds 10 knots or less becoming south.
waves 1 foot or less. 
.saturday...south winds 10 knots or less becoming southwest.
waves 1 foot or less. 
.sunday...west winds 5 to 15 knots becoming northwest. waves
1 foot or less. 
.monday...north winds 5 to 15 knots becoming south. waves 1 to
3 feet. 

$$

fzus61 kcle 100155
glfle 
expires:202609100815;;663370

open lake forecast for lake erie
national weather service cleveland oh
955 pm edt wed sep 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 cold front will move across the lake tonight. this front will 
stall south of the lake thursday morning before moving south in 
the afternoon. high pressure 30.10 inches builds in thursday night
into friday, weakening to 30.00 inches for saturday as an active 
frontal boundary sets up over the southern great lakes.


lez162-163-100815-
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-
955 pm edt wed sep 9 2026

.rest of tonight...west winds 10 to 15 knots. waves 1 to 2 feet. 
.thursday...northwest winds 5 to 15 knots diminishing to less
than 10 knots. waves 2 feet or less. 
.thursday night...north winds 5 to 10 knots becoming northeast.
waves 1 foot or less. 
.friday...northeast winds 5 to 10 knots becoming east. waves
1 foot or less. 
.friday night...east winds 5 to 10 knots becoming southeast.
waves 2 feet or less. 
.saturday...south winds 5 to 10 knots becoming southwest. waves
1 foot or less. 
.sunday...west winds 10 knots or less becoming east. waves 2 feet
or less. 
.monday...southeast winds 10 to 15 knots becoming south 15 to
20 knots. waves 1 to 3 feet. 

$$

fzus61 kcle 100155
glfle 
expires:202609100815;;663372

open lake forecast for lake erie
national weather service cleveland oh
955 pm edt wed sep 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 cold front will move across the lake tonight. this front will 
stall south of the lake thursday morning before moving south in 
the afternoon. high pressure 30.10 inches builds in thursday night
into friday, weakening to 30.00 inches for saturday as an active 
frontal boundary sets up over the southern great lakes.


lez061-168-169-100815-
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-
955 pm edt wed sep 9 2026

.rest of tonight...west winds 15 to 20 knots. a slight chance of
showers and thunderstorms late this evening. waves 3 to 5 feet. 
.thursday...northwest winds 5 to 15 knots becoming west. waves
1 to 3 feet. 
.thursday night...northwest winds 5 to 10 knots becoming
northeast. waves 2 feet or less. 
.friday...north winds 10 knots or less becoming east. waves
1 foot or less. 
.friday night...southeast winds 10 knots or less. waves 1 foot or
less. 
.saturday...south winds 5 to 10 knots. waves 2 feet or less. 
.sunday...southwest winds 5 to 10 knots becoming northeast. waves
1 to 2 feet. 
.monday...northeast winds 5 to 15 knots becoming south 15 to
20 knots. waves 1 to 3 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 100155
glfle 
expires:202609100815;;663371

open lake forecast for lake erie
national weather service cleveland oh
955 pm edt wed sep 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 cold front will move across the lake tonight. this front will 
stall south of the lake thursday morning before moving south in 
the afternoon. high pressure 30.10 inches builds in thursday night
into friday, weakening to 30.00 inches for saturday as an active 
frontal boundary sets up over the southern great lakes.


lez164>167-100815-
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-willowick to geneva-on-the-
lake oh beyond 5nm off shoreline to us-canadian border-
955 pm edt wed sep 9 2026

.rest of tonight...west winds 15 to 20 knots diminishing to 10 to
15 knots. waves 2 to 4 feet. 
.thursday...northwest winds 5 to 15 knots. waves 1 to 3 feet
subsiding to 1 foot or less. 
.thursday night...north winds 5 to 10 knots becoming northeast.
waves 2 feet or less. 
.friday...east winds 10 knots or less becoming northeast. waves
1 foot or less. 
.friday night...east winds 5 to 10 knots becoming southeast.
waves 2 feet or less. 
.saturday...south winds 5 to 10 knots becoming southwest. waves
2 feet or less. 
.sunday...west winds 5 to 15 knots becoming east. waves 2 feet or
less. 
.monday...east winds 5 to 15 knots becoming south 15 to 20 knots.
waves 1 to 3 feet building to 2 to 4 feet. 

$$

fzus61 kcle 092143
glfle 
expires:202609100215;;654478

open lake forecast for lake erie
national weather service cleveland oh
543 pm edt wed sep 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 trough averaging 29.90 inches moves across lake erie this
evening followed by a cold front late tonight. this front will
stall south of the lake thursday morning before moving south in
the afternoon. high pressure 30.10 inches builds in thursday night 
into friday, weakening to 30.00 inches for saturday as an active
frontal boundary sets up over the southern great lakes.


lez166-167-100215-
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-
543 pm edt wed sep 9 2026

...severe thunderstorm watch 665 in effect until 11 pm edt this
evening...

.tonight...southwest winds 15 to 20 knots becoming west 10 to
15 knots. showers with a chance of thunderstorms early. waves
2 to 4 feet. 
.thursday...northwest winds 5 to 15 knots. waves 1 to 3 feet
subsiding to 1 foot or less. 
.thursday night...north winds 5 to 10 knots becoming east. waves
1 to 2 feet. 
.friday...east winds 10 knots or less becoming northeast. waves
1 foot or less. 
.friday night...east winds 5 to 10 knots becoming southeast.
waves 2 feet or less. 
.saturday...south winds 5 to 10 knots becoming southwest. waves
2 feet or less. 
.sunday...west winds 5 to 15 knots becoming northeast. waves
2 feet or less. 
.monday...east winds 5 to 15 knots becoming south 15 to 20 knots.
waves 1 to 3 feet building to 2 to 4 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 092143
glfle 
expires:202609100215;;654480

open lake forecast for lake erie
national weather service cleveland oh
543 pm edt wed sep 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 trough averaging 29.90 inches moves across lake erie this
evening followed by a cold front late tonight. this front will
stall south of the lake thursday morning before moving south in
the afternoon. high pressure 30.10 inches builds in thursday night 
into friday, weakening to 30.00 inches for saturday as an active
frontal boundary sets up over the southern great lakes.


lez168-169-100215-
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-
543 pm edt wed sep 9 2026

...severe thunderstorm watch 665 in effect until 11 pm edt this
evening...

.tonight...southwest winds 10 to 15 knots becoming west. showers
with a chance of thunderstorms early, then a slight chance of
showers and thunderstorms late this evening. waves 2 to 4 feet
building to 3 to 5 feet. 
.thursday...northwest winds 5 to 15 knots. waves 1 to 3 feet. 
.thursday night...northwest winds 5 to 10 knots becoming
northeast. waves 2 feet or less. 
.friday...northeast winds 10 knots or less becoming east. waves
1 foot or less. 
.friday night...east winds 10 knots or less becoming southeast.
waves 1 foot or less. 
.saturday...south winds 5 to 10 knots. waves 2 feet or less. 
.sunday...southwest winds 5 to 10 knots becoming northeast. waves
1 to 2 feet. 
.monday...east winds 5 to 15 knots becoming south 15 to 20 knots.
waves 1 to 3 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 092143
glfle 
expires:202609100215;;654481

open lake forecast for lake erie
national weather service cleveland oh
543 pm edt wed sep 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 trough averaging 29.90 inches moves across lake erie this
evening followed by a cold front late tonight. this front will
stall south of the lake thursday morning before moving south in
the afternoon. high pressure 30.10 inches builds in thursday night 
into friday, weakening to 30.00 inches for saturday as an active
frontal boundary sets up over the southern great lakes.


lez061-100215-
ripley to buffalo ny extending from 5nm off shoreline to us-
canadian border-
543 pm edt wed sep 9 2026

.tonight...southwest winds 10 to 15 knots becoming west 15 to
20 knots. showers with a chance of thunderstorms early, then a
chance of showers with a slight chance of thunderstorms late this
evening. waves 2 to 4 feet building to 3 to 5 feet. 
.thursday...northwest winds 5 to 10 knots becoming west. waves
1 to 3 feet. 
.thursday night...northwest winds 5 to 10 knots becoming north.
waves 2 feet or less. 
.friday...north winds 5 to 10 knots becoming light and variable.
waves 1 foot or less. 
.friday night...light and variable winds becoming southeast 5 to
10 knots. waves 1 foot or less. 
.saturday...south winds 5 to 10 knots. waves 1 foot or less. 
.sunday...southwest winds 5 to 10 knots becoming northeast. waves
around 1 foot. 
.monday...northeast winds 5 to 15 knots becoming south. waves
2 feet or less. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 092143
glfle 
expires:202609100215;;654479

open lake forecast for lake erie
national weather service cleveland oh
543 pm edt wed sep 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 trough averaging 29.90 inches moves across lake erie this
evening followed by a cold front late tonight. this front will
stall south of the lake thursday morning before moving south in
the afternoon. high pressure 30.10 inches builds in thursday night 
into friday, weakening to 30.00 inches for saturday as an active
frontal boundary sets up over the southern great lakes.


lez164-165-100215-
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-
543 pm edt wed sep 9 2026

.tonight...southwest winds 10 to 15 knots becoming west. showers
likely with a chance of thunderstorms early, then a chance of
showers and thunderstorms early. waves 1 to 3 feet. 
.thursday...west winds 5 to 15 knots becoming northwest. waves
1 to 3 feet subsiding to 1 foot or less. 
.thursday night...north winds 5 to 10 knots becoming northeast.
waves 1 foot or less. 
.friday...east winds 5 to 10 knots. waves around 1 foot. 
.friday night...east winds around 10 knots becoming southeast.
waves 1 to 2 feet. 
.saturday...south winds 5 to 10 knots becoming southwest. waves
2 feet or less. 
.sunday...west winds 5 to 10 knots becoming east. waves 2 feet or
less. 
.monday...southeast winds 10 to 15 knots becoming south 15 to
20 knots. waves 1 to 2 feet building to 2 to 4 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus63 kdtx 100139
glflh 
expires:202609100945;;663067

open lake forecast for lake huron
national weather service detroit/pontiac mi
939 pm edt wed sep 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, 30.00 inches, expands into the region
latter half of thursday. this high then drifts over the central
great lakes through friday night.


lhz363-462-100945-
lake huron from sturgeon point to alabaster mi beyond 5nm off
shore-
lake huron from port austin to harbor beach beyond 5nm off shore-
939 pm edt wed sep 9 2026

.rest of tonight...west winds 10 to 15 knots veering to the
northwest after midnight...then decreasing to 5 to 10 knots early
in the morning. waves 2 to 4 feet. 
.thursday...northwest winds 5 to 10 knots. waves 1 to 3 feet. 
.thursday night...north winds 5 to 10 knots  becoming light and
variable. waves 1 to 3 feet. 
.friday...light and variable winds becoming southwest 5 to
10 knots in the late morning and afternoon. waves 2 feet or less.
.friday night...south winds 5 to 10 knots increasing to 10 to
15 knots in the late evening and overnight. waves 1 to 3 feet. 
.saturday...south winds 10 to 15 knots becoming west 5 to
10 knots late in the evening. waves 2 to 4 feet subsiding to 1 to
3 feet late in the afternoon. 
.sunday...northwest winds 5 to 10 knots. waves 2 feet or less. 
.monday...north winds 5 to 10 knots veering to the east in the
late morning and early afternoon...then becoming southeast 10 to
15 knots with gusts to around 30 knots early in the evening
becoming south 20 to 25 knots with gusts to 35 knot gales by
midnight. a chance of showers. waves 1 to 3 feet building to 5 to
7 feet. waves occasionally around 10 feet. 


$$

fzus63 kdtx 100139
glflh 
expires:202609100945;;663066

open lake forecast for lake huron
national weather service detroit/pontiac mi
939 pm edt wed sep 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, 30.00 inches, expands into the region
latter half of thursday. this high then drifts over the central
great lakes through friday night.


lhz361-362-100945-
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-
939 pm edt wed sep 9 2026

.rest of tonight...west winds 10 to 15 knots increasing to 15 to
20 knots with gusts to around 30 knots after midnight. waves 3 to
5 feet. 
.thursday...northwest winds 10 to 15 knots. waves 3 to 5 feet. 
.thursday night...west winds 10 to 15 knots becoming light and
variable. waves 2 to 4 feet subsiding to 1 to 3 feet in the late
evening and overnight. 
.friday...light and variable winds becoming south 10 to 15 knots.
waves 2 feet or less. 
.friday night...south winds 10 to 15 knots. waves 2 to 4 feet. 
.saturday...south winds 10 to 15 knots increasing to 15 to
20 knots late in the morning...then decreasing to 10 to 15 knots
late in the afternoon becoming west 5 to 10 knots late in the
evening. waves 3 to 5 feet subsiding to 1 to 3 feet late in the
evening. 
.sunday...west winds 5 to 10 knots increasing to 10 to 15 knots
until early evening...then becoming north 5 to 10 knots by
midnight. waves 1 to 3 feet. 
.monday...north winds 5 to 10 knots becoming east 10 to 15 knots
in the late morning and early afternoon...then increasing to
15 to 20 knots with gusts to around 30 knots early in the evening
becoming southeast 20 to 25 knots with gusts to 40 knot gales by
midnight. a chance of showers...then showers likely by midnight.
waves 1 to 3 feet building to 6 to 9 feet. waves occasionally
around 12 feet. 


$$

fzus63 kdtx 100139
glfsc 
expires:202609100945;;663070

lake st clair forecast
national weather service detroit/pontiac mi
939 pm edt wed sep 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, 30.00 inches, expands into the region
latter half of thursday. this high then drifts over the central
great lakes through friday night.


lcz460-100945-
lake st clair-
939 pm edt wed sep 9 2026

.rest of tonight...west winds 10 to 15 knots diminishing to 5 to 10
knots early in the morning. partly cloudy. waves 2 feet or less.
.thursday...north winds 5 to 10 knots in the morning becoming light
and variable...then becoming northwest 5 to 10 knots late in the
afternoon. partly sunny. waves 2 feet or less.
.thursday night...north winds 5 to 10 knots veering to the northeast
in the late evening and overnight. partly cloudy early in the
evening then clearing. waves 2 feet or less.
.friday...light and variable winds becoming southeast 5 to 10 knots
early in the afternoon. sunny. waves 2 feet or less.
.friday night...southeast winds 5 to 10 knots. mostly clear. waves 2
feet or less.
.saturday...south winds 5 to 10 knots increasing to 10 to 15 knots
in the afternoon...then diminishing to 5 to 10 knots in the evening.
mostly sunny becoming partly cloudy. waves 2 feet or less.
.sunday...northeast winds 5 to 10 knots. partly cloudy. waves 2 feet
or less.
.monday...south winds 20 to 25 knots. partly cloudy. waves 1 to 3
feet.

$$

fzus63 kdtx 100139
glflh 
expires:202609100945;;663068

open lake forecast for lake huron
national weather service detroit/pontiac mi
939 pm edt wed sep 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, 30.00 inches, expands into the region
latter half of thursday. this high then drifts over the central
great lakes through friday night.


lhz463-464-100945-
lake huron from harbor beach to port sanilac beyond 5nm off shore-
lake huron from port sanilac to port huron beyond 5nm off shore-
939 pm edt wed sep 9 2026

.rest of tonight...west winds 10 to 15 knots. waves 1 to 3 feet. 
.thursday...northwest winds 5 to 10 knots. waves 2 feet or less. 
.thursday night...northwest winds 5 to 10 knots veering to the
north by midnight...then becoming light and variable after
midnight. waves 2 feet or less. 
.friday...light and variable winds becoming southeast 5 to
10 knots early in the afternoon. waves 2 feet or less. 
.friday night...southeast winds 5 to 10 knots becoming south
10 to 15 knots in the late evening and overnight. waves 2 feet or
less. 
.saturday...south winds 10 to 15 knots decreasing to 5 to
10 knots late in the evening. waves 1 to 3 feet. 
.sunday...northwest winds 5 to 10 knots becoming northeast 10 to
15 knots by midnight. waves 2 feet or less. 
.monday...northeast winds 10 to 15 knots veering to the southeast
early in the evening...then becoming south 20 to 25 knots with
gusts to around 30 knots by midnight. a chance of. waves 1 to
3 feet building to 3 to 5 feet . 


$$

fzus63 kdtx 091942
glflh 
expires:202609100345;;649904

open lake forecast for lake huron
national weather service detroit/pontiac mi
342 pm edt wed sep 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...low pressure, 29.30 inches, will track across northern
ontario today, driving a slow moving cold front across the great
lakes region. this system will provide showers and few
thunderstorms to the lakes. high pressure will expand into the
region from the west thursday into friday.


lhz361-100345-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
342 pm edt wed sep 9 2026

.tonight...west winds 15 to 20 knots becoming northwest 10 to
15 knots late in the evening...then increasing to 15 to 20 knots
after midnight. gusts to 30 knots. waves 3 to 5 feet. 
.thursday...northwest winds 10 to 15 knots. waves 2 to 4 feet. 
.thursday night...northwest winds 10 to 15 knots becoming light
and variable. waves 1 to 3 feet. 
.friday...light and variable winds becoming south 5 to 10 knots
in the late morning and afternoon. waves 2 feet or less. 
.friday night...southeast winds 5 to 10 knots becoming south
10 to 15 knots in the late evening and overnight. waves 2 to
4 feet. 
.saturday...south winds 10 to 15 knots becoming southwest 5 to
10 knots late in the afternoon...then veering to the northwest
late in the evening. waves 2 to 4 feet subsiding to 1 to 3 feet
late in the afternoon. 
.sunday...west winds 10 to 15 knots. waves 1 to 3 feet building
to 2 to 4 feet . 
.monday...north winds 5 to 10 knots becoming east 10 to 15 knots
in the late morning and early afternoon...then increasing to
15 to 20 knots with gusts to 35 knot gales early in the evening
becoming southeast 20 to 25 knots with gusts to 35 knot gales by
midnight. a chance of showers early in the morning. rain showers
likely until early evening...then showers by midnight. waves
2 feet or less building to 6 to 9 feet. waves occasionally around
12 feet. 


$$

fzus63 kdtx 091942
glflh 
expires:202609100345;;649905

open lake forecast for lake huron
national weather service detroit/pontiac mi
342 pm edt wed sep 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...low pressure, 29.30 inches, will track across northern
ontario today, driving a slow moving cold front across the great
lakes region. this system will provide showers and few
thunderstorms to the lakes. high pressure will expand into the
region from the west thursday into friday.


lhz362-363-100345-
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-
342 pm edt wed sep 9 2026

.tonight...southwest winds 10 to 15 knots veering to the
northwest after midnight. a chance of waterspouts in the evening.
waves 3 to 5 feet. 
.thursday...northwest winds 10 to 15 knots decreasing to 5 to
10 knots early in the afternoon...then increasing to 10 to
15 knots late in the afternoon. waves 2 to 4 feet. 
.thursday night...northwest winds 10 to 15 knots decreasing to
northwest after midnight. waves 2 to 4 feet subsiding to 1 to
3 feet in the late evening and overnight. 
.friday...light and variable winds becoming southwest 5 to
10 knots in the late morning and early afternoon...then becoming
south 10 to 15 knots early in the afternoon. waves 2 feet or
less. 
.friday night...south winds 10 to 15 knots. waves 2 to 4 feet. 
.saturday...south winds 10 to 15 knots increasing to 15 to
20 knots late in the morning...then decreasing to 10 to 15 knots
late in the afternoon becoming west 5 to 10 knots late in the
evening. waves 3 to 5 feet. 
.sunday...northwest winds 5 to 10 knots becoming north 10 to
15 knots . waves 1 to 3 feet building to 3 to 5 feet . 
.monday...north winds 5 to 10 knots veering to the east in the
late morning and early afternoon...then becoming southeast 15 to
20 knots with gusts to around 30 knots early in the evening
increasing to 20 to 25 knots with gusts to 40 knot gales by
midnight. a chance of showers. waves 2 to 4 feet subsiding to
1 to 3 feet until early evening...then building to 4 to 6 feet by
midnight. waves occasionally around 8 feet. 


$$

fzus63 kdtx 091942
glflh 
expires:202609100345;;649906

open lake forecast for lake huron
national weather service detroit/pontiac mi
342 pm edt wed sep 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...low pressure, 29.30 inches, will track across northern
ontario today, driving a slow moving cold front across the great
lakes region. this system will provide showers and few
thunderstorms to the lakes. high pressure will expand into the
region from the west thursday into friday.


lhz462>464-100345-
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-
342 pm edt wed sep 9 2026

.tonight...southwest winds 15 to 20 knots becoming west 10 to
15 knots by midnight...then veering to the northwest early in the
morning. waves 2 to 4 feet. 
.thursday...northwest winds 5 to 10 knots. waves 1 to 3 feet. 
.thursday night...north winds 5 to 10 knots  becoming light and
variable. waves 2 feet or less. 
.friday...west winds 5 to 10 knots early in the morning becoming
light and variable...then becoming southeast 5 to 10 knots early
in the afternoon. waves 2 feet or less. 
.friday night...southeast winds 5 to 10 knots becoming south
10 to 15 knots in the late evening and overnight. waves 2 feet or
less. 
.saturday...south winds 10 to 15 knots decreasing to 5 to
10 knots late in the evening. waves 2 to 4 feet. 
.sunday...northwest winds 5 to 10 knots becoming 10 to 15 knots
by midnight. waves 1 to 3 feet building to 2 to 4 feet by
midnight. 
.monday...northeast winds 10 to 15 knots veering to the southeast
early in the evening...then becoming south 20 to 25 knots with
gusts to around 30 knots by midnight. a chance of showers by
midnight. waves 2 to 4 feet subsiding to 1 to 3 feet early in the
evening...then building to 3 to 5 feet by midnight. 


$$

fzus63 kmkx 091937
glflm 
expires:202609100315;;649715

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
237 pm cdt wed sep 9 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...

shower & embedded thunderstorm chances will continue along/ahead 
of a passing cold front over the southern third of lake michigan
through the rest of this afternoon. severe weather is not 
expected. high pressure near 30.1 inches will build in from the 
northern great plains tonight, lingering through thursday night & 
bringing light and variable winds to the waters.

a new area of low pressure near 29.2 inches will shift from
central canada toward the hudson bay friday morning through the
day saturday, bringing increasing south-southwest winds followed
by a west-northwest wind shift behind a cold front. occasional 
wind gusts near gale force are possible during this time frame, 
though whether or not they will be widespread enough to warrant 
headlines remains uncertain. trends will continue to be monitored
through the end of this week. periods of showers and storms will 
accompany the approaching/passing front, with widespread severe 
weather not currently anticipated.

high pressure near 30.1 inches will shift from the northern great
plains across lake michigan saturday night through sunday night,
bringing light and variable winds. the next area of low pressure 
& cold front will approach from the west early next week, bringing
increasing winds & additional chances for showers and storms. 
depending on the strength of the low and front, periods of gales &
some stronger storms could be possible. will be providing
additional details as this portion of the period draws closer.


lmz080-669-671-673-675-777-779-870-872-874-876-878-100315-
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-
237 pm cdt wed sep 9 2026

sheboygan wi to pentwater mi south...

.tonight...southwest winds 10 to 20 kt veering to northwest.
waves 2 to 4 ft. 
.thursday...north winds 10 to 15 kt. waves 2 to 4 ft subsiding to
1 to 2 ft. 
.thursday night...northeast winds 10 to 15 kt veering to south.
waves 1 to 2 ft. 
.friday...south winds 10 to 20 kt increasing to 15 to 25 kt.
waves 1 to 3 ft building to 3 to 5 ft. 
.friday night...south winds 15 to 25 kt. waves 4 to 6 ft
occasionally to 8 ft. 
.saturday...south winds 15 to 25 kt becoming southwest. waves
4 to 6 ft occasionally to 8 ft. 
.saturday night...west winds 10 to 20 kt becoming northwest.
waves 2 to 4 ft subsiding to 1 to 3 ft. 
.sunday...north winds 10 to 20 kt. waves 1 to 3 ft. 
.monday...southeast winds to 30 kt becoming south gales to 40 kt.
chance of showers. waves 5 to 8 ft occasionally to 10 ft building
to 7 to 10 ft occasionally to 13 ft.  

$$

fzus63 kmkx 091937
glflm 
expires:202609100315;;649714

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
237 pm cdt wed sep 9 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...

shower & embedded thunderstorm chances will continue along/ahead 
of a passing cold front over the southern third of lake michigan
through the rest of this afternoon. severe weather is not 
expected. high pressure near 30.1 inches will build in from the 
northern great plains tonight, lingering through thursday night & 
bringing light and variable winds to the waters.

a new area of low pressure near 29.2 inches will shift from
central canada toward the hudson bay friday morning through the
day saturday, bringing increasing south-southwest winds followed
by a west-northwest wind shift behind a cold front. occasional 
wind gusts near gale force are possible during this time frame, 
though whether or not they will be widespread enough to warrant 
headlines remains uncertain. trends will continue to be monitored
through the end of this week. periods of showers and storms will 
accompany the approaching/passing front, with widespread severe 
weather not currently anticipated.

high pressure near 30.1 inches will shift from the northern great
plains across lake michigan saturday night through sunday night,
bringing light and variable winds. the next area of low pressure 
& cold front will approach from the west early next week, bringing
increasing winds & additional chances for showers and storms. 
depending on the strength of the low and front, periods of gales &
some stronger storms could be possible. will be providing
additional details as this portion of the period draws closer.


lmz261-362-364-366-563-565-567-868-100315-
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-
237 pm cdt wed sep 9 2026

sheboygan wi to pentwater mi north...

.tonight...west winds to 30 kt becoming northwest 10 to 20 kt.
waves 3 to 5 ft subsiding to 1 to 3 ft. 
.thursday...northwest winds 10 to 20 kt backing to southwest.
waves 1 to 3 ft. 
.thursday night...south winds 10 to 15 kt becoming southwest.
waves 1 to 2 ft. 
.friday...southwest winds 15 to 25 kt becoming south to 30 kt.
waves 1 to 3 ft building to 4 to 6 ft occasionally to 8 ft. 
.friday night...south winds to 30 kt. waves 4 to 7 ft
occasionally to 9 ft. 
.saturday...southwest winds to 30 kt. chance of showers in the
afternoon. waves 4 to 7 ft occasionally to 9 ft subsiding to 4 to
6 ft occasionally to 8 ft. 
.saturday night...west winds 10 to 20 kt becoming north. waves
2 to 4 ft subsiding to 1 to 3 ft. 
.sunday...north winds 10 to 20 kt. waves 1 to 2 ft. 
.monday...southeast winds to 30 kt becoming south gales to 35 kt.
showers likely. waves 4 to 7 ft occasionally to 9 ft building to
7 to 10 ft occasionally to 13 ft.  

$$

fzus63 kmqt 100201
glfls 
expires:202609100800;;663470

open lake forecast for lake superior
national weather service marquette mi
1001 pm edt wed sep 9 2026

for waters beyond 5 nautical miles of shore on lake superior.

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 29.0 inch low shifts from hudson bay to northern quebec early 
tomorrow, promoting a strong pressure gradient and gales over lake 
superior. ridging to 30.0 inches and subsequent calmer conditions 
follow from early tomorrow morning until friday morning when a 
trough averaging 29.5 inches tracks from the great plains north 
toward hudson bay. a cold front passes through on saturday with 
ridging in its wake reaching 30.0 inches by sunday.




lsz162-100800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1001 pm edt wed sep 9 2026 /901 pm cdt wed sep 9 2026/

.rest of tonight...west winds 15 to 25 knots diminishing to 5 to
15 knots. waves 1 to 3 feet subsiding to calm to 2 feet. 
.thursday...west winds 5 to 15 knots backing southwest in the
afternoon, then becoming south 10 to 20 knots late. waves calm to
2 feet. 
.thursday night...south winds 5 to 15 knots increasing to 10 to
20 knots after midnight, then becoming southwest 15 to 25 knots
late. waves building to 1 to 3 feet. 
.friday...southwest winds 20 to 30 knots. a chance of showers and
a slight chance of thunderstorms by mid afternoon. waves building
to 3 to 5 feet occasionally to 7 feet, then subsiding to 2 to
4 feet. 
.friday night...south winds 20 to 30 knots veering southwest
after midnight. showers and a chance of thunderstorms. waves
subsiding to 1 to 3 feet, then building to 3 to 6 feet
occasionally to 8 feet. 
.saturday...west winds 15 to 25 knots increasing to 20 to
30 knots by mid afternoon. waves subsiding to 1 to 3 feet, then
building to 2 to 4 feet. 
.saturday night...west winds 15 to 25 knots diminishing to 10 to
20 knots after midnight. waves subsiding to calm to 2 feet. 
.sunday...southwest winds 10 to 20 knots becoming east 20 to
30 knots. a chance of showers. waves building to 2 to 4 feet. 
.monday...east gales to 40 knots becoming west gales to 35 knots.
showers. waves building to 5 to 9 feet occasionally to 11 feet. 

$$

fzus63 kmqt 100201
glfls 
expires:202609100800;;663471

open lake forecast for lake superior
national weather service marquette mi
1001 pm edt wed sep 9 2026

for waters beyond 5 nautical miles of shore on lake superior.

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 29.0 inch low shifts from hudson bay to northern quebec early 
tomorrow, promoting a strong pressure gradient and gales over lake 
superior. ridging to 30.0 inches and subsequent calmer conditions 
follow from early tomorrow morning until friday morning when a 
trough averaging 29.5 inches tracks from the great plains north 
toward hudson bay. a cold front passes through on saturday with 
ridging in its wake reaching 30.0 inches by sunday.




lsz263-100800-
lake superior from saxon harbor wi to upper entrance to portage
canal mi 5nm off shore to the us/canadian border including isle
royale national park-
1001 pm edt wed sep 9 2026

.rest of tonight...west winds 15 to 25 knots veering northwest
after midnight, then diminishing to 10 to 20 knots late. waves
3 to 5 feet occasionally to 7 feet subsiding to 1 to 3 feet. 
.thursday...northwest winds 5 to 15 knots becoming southwest
10 to 20 knots in the afternoon. waves subsiding to calm to
2 feet. 
.thursday night...south winds 10 to 20 knots increasing to 20 to
30 knots. waves building to 2 to 4 feet. 
.friday...southwest gales to 35 knots. a slight chance of showers
and thunderstorms by mid afternoon. waves building to 3 to 6 feet
occasionally to 8 feet, then subsiding to 2 to 4 feet. 
.friday night...south winds 20 to 30 knots veering southwest
after midnight. showers and a chance of thunderstorms. waves
building to 4 to 7 feet occasionally to 9 feet, then subsiding to
3 to 5 feet occasionally to 7 feet. 
.saturday...west winds 20 to 30 knots increasing to gales to
35 knots by mid afternoon. waves building to 3 to 6 feet
occasionally to 8 feet. 
.saturday night...west winds 20 to 30 knots becoming northwest
15 to 25 knots after midnight. waves subsiding to 1 to 3 feet. 
.sunday...west winds 10 to 20 knots becoming east 15 to 25 knots.
a chance of showers. waves subsiding to calm to 2 feet, then
building to 1 to 3 feet. 
.monday...east gales to 35 knots becoming west gales to 40 knots.
showers. waves building to 7 to 10 feet occasionally to 13 feet. 

$$

fzus63 kmqt 100201
glfls 
expires:202609100800;;663472

open lake forecast for lake superior
national weather service marquette mi
1001 pm edt wed sep 9 2026

for waters beyond 5 nautical miles of shore on lake superior.

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 29.0 inch low shifts from hudson bay to northern quebec early 
tomorrow, promoting a strong pressure gradient and gales over lake 
superior. ridging to 30.0 inches and subsequent calmer conditions 
follow from early tomorrow morning until friday morning when a 
trough averaging 29.5 inches tracks from the great plains north 
toward hudson bay. a cold front passes through on saturday with 
ridging in its wake reaching 30.0 inches by sunday.




lsz264-100800-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
1001 pm edt wed sep 9 2026

.rest of tonight...northwest winds 15 to 25 knots diminishing to
10 to 20 knots late. waves 3 to 6 feet occasionally to 8 feet
subsiding to 2 to 4 feet. 
.thursday...northwest winds 5 to 15 knots backing southwest late.
waves subsiding to calm to 2 feet. 
.thursday night...south winds 5 to 15 knots increasing to 15 to
25 knots. waves building to 2 to 4 feet. 
.friday...southwest winds 20 to 30 knots. a slight chance of
showers by mid afternoon. waves building to 3 to 6 feet
occasionally to 8 feet, then subsiding to 2 to 4 feet. 
.friday night...south winds 15 to 25 knots veering southwest
after midnight. a chance of showers through midnight. a slight
chance of thunderstorms. showers after midnight. waves building
to 3 to 5 feet occasionally to 7 feet. 
.saturday...west winds 20 to 30 knots increasing to gales to
35 knots by mid afternoon. waves building to 3 to 6 feet
occasionally to 8 feet. 
.saturday night...west gales to 35 knots becoming northwest 15 to
25 knots after midnight. waves subsiding to 1 to 3 feet. 
.sunday...west winds 15 to 25 knots diminishing to 10 to
20 knots. waves subsiding to calm to 2 feet. 
.monday...southeast gales to 40 knots veering northwest. a chance
of showers, then showers likely. waves building to 7 to 11 feet
occasionally to 14 feet. 

$$

fzus63 kmqt 100201
glfls 
expires:202609100800;;663473

open lake forecast for lake superior
national weather service marquette mi
1001 pm edt wed sep 9 2026

for waters beyond 5 nautical miles of shore on lake superior.

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 29.0 inch low shifts from hudson bay to northern quebec early 
tomorrow, promoting a strong pressure gradient and gales over lake 
superior. ridging to 30.0 inches and subsequent calmer conditions 
follow from early tomorrow morning until friday morning when a 
trough averaging 29.5 inches tracks from the great plains north 
toward hudson bay. a cold front passes through on saturday with 
ridging in its wake reaching 30.0 inches by sunday.




lsz265-100800-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
1001 pm edt wed sep 9 2026

...gale warning in effect until midnight edt tonight...

.rest of tonight...northwest gales to 35 knots diminishing to
15 to 25 knots. waves 3 to 6 feet occasionally to 8 feet
subsiding to 1 to 3 feet. 
.thursday...northwest winds 10 to 20 knots diminishing to 5 to
15 knots in the afternoon, then backing southeast late. waves
subsiding to calm to 2 feet. 
.thursday night...south winds 5 to 15 knots increasing to 15 to
25 knots. waves calm to 2 feet. 
.friday...southwest winds 20 to 30 knots becoming south 15 to
25 knots by mid afternoon. waves building to 2 to 4 feet, then
subsiding to 1 to 3 feet. 
.friday night...south winds 15 to 25 knots increasing to 20 to
30 knots after midnight. a slight chance of showers through
midnight, then showers likely and a slight chance of
thunderstorms after midnight. waves building to 3 to 5 feet
occasionally to 7 feet. 
.saturday...west gales to 35 knots. waves building to 3 to 6 feet
occasionally to 8 feet. 
.saturday night...west winds 20 to 30 knots. waves subsiding to
1 to 3 feet. 
.sunday...northwest winds 15 to 25 knots becoming east 10 to
20 knots. a chance of showers. waves subsiding to calm to 2 feet,
then building to 1 to 3 feet. 
.monday...southeast gales to 45 knots becoming west gales to
40 knots. showers. a chance of showers. waves building to 6 to
10 feet occasionally to 13 feet. 

$$

fzus63 kmqt 100201
glfls 
expires:202609100800;;663474

open lake forecast for lake superior
national weather service marquette mi
1001 pm edt wed sep 9 2026

for waters beyond 5 nautical miles of shore on lake superior.

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 29.0 inch low shifts from hudson bay to northern quebec early 
tomorrow, promoting a strong pressure gradient and gales over lake 
superior. ridging to 30.0 inches and subsequent calmer conditions 
follow from early tomorrow morning until friday morning when a 
trough averaging 29.5 inches tracks from the great plains north 
toward hudson bay. a cold front passes through on saturday with 
ridging in its wake reaching 30.0 inches by sunday.




lsz266-100800-
lake superior east of a line from manitou island to marquette mi
and west of a line from grand marais mi to the us/canadian border
beyond 5nm from shore-
1001 pm edt wed sep 9 2026

...gale warning in effect until midnight edt tonight...

.rest of tonight...northwest gales to 35 knots diminishing to
15 to 25 knots. waves 6 to 9 feet occasionally to 11 feet
subsiding to 3 to 6 feet occasionally to 8 feet. 
.thursday...northwest winds 10 to 20 knots diminishing to 5 to
15 knots in the afternoon. waves subsiding to calm to 2 feet. 
.thursday night...south winds 5 to 15 knots increasing to 15 to
25 knots. waves building to 2 to 4 feet. 
.friday...south winds 20 to 30 knots. waves building to 3 to
5 feet occasionally to 7 feet. 
.friday night...south winds 20 to 30 knots. a slight chance of
showers through midnight. a slight chance of thunderstorms.
showers likely after midnight. waves building to 5 to 8 feet
occasionally to 10 feet. 
.saturday...southwest winds 20 to 30 knots veering west by mid
afternoon. a chance of showers through early afternoon. waves
subsiding to 3 to 6 feet occasionally to 8 feet. 
.saturday night...west winds 20 to 30 knots veering northwest
after midnight. waves subsiding to 2 to 4 feet. 
.sunday...northwest winds 15 to 25 knots becoming east 10 to
20 knots. waves subsiding to calm to 2 feet, then building to
1 to 3 feet. 
.monday...southeast gales to 40 knots becoming west gales to
45 knots. showers. waves building to 8 to 11 feet occasionally to
14 feet. 

$$

fzus63 kmqt 100201
glfls 
expires:202609100800;;663475

open lake forecast for lake superior
national weather service marquette mi
1001 pm edt wed sep 9 2026

for waters beyond 5 nautical miles of shore on lake superior.

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 29.0 inch low shifts from hudson bay to northern quebec early 
tomorrow, promoting a strong pressure gradient and gales over lake 
superior. ridging to 30.0 inches and subsequent calmer conditions 
follow from early tomorrow morning until friday morning when a 
trough averaging 29.5 inches tracks from the great plains north 
toward hudson bay. a cold front passes through on saturday with 
ridging in its wake reaching 30.0 inches by sunday.




lsz267-100800-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
1001 pm edt wed sep 9 2026

...gale warning in effect until 2 am edt thursday...

.rest of tonight...northwest gales to 35 knots diminishing to
20 to 30 knots late. waves 8 to 11 feet occasionally to 14 feet
subsiding to 5 to 8 feet occasionally to 10 feet. 
.thursday...northwest winds 15 to 25 knots diminishing to 5 to
15 knots. waves subsiding to 1 to 3 feet. 
.thursday night...west winds 5 to 15 knots backing south after
midnight, then increasing to 10 to 20 knots late. waves subsiding
to calm to 2 feet, then building to 1 to 3 feet. 
.friday...south winds 15 to 25 knots. waves building to 2 to
4 feet. 
.friday night...south winds 20 to 30 knots. a slight chance of
showers after midnight. waves building to 4 to 7 feet
occasionally to 9 feet. 
.saturday...southwest winds 20 to 30 knots becoming west 15 to
25 knots by mid afternoon. a chance of showers. waves subsiding
to 3 to 5 feet occasionally to 7 feet. 
.saturday night...west winds 15 to 25 knots becoming northwest
20 to 30 knots after midnight. waves subsiding to 2 to 4 feet. 
.sunday...northwest winds 15 to 25 knots diminishing to 10 to
20 knots. waves subsiding to calm to 2 feet. 
.monday...southeast winds 20 to 30 knots becoming west gales to
40 knots. showers and a chance of thunderstorms. waves building
to 6 to 10 feet occasionally to 13 feet. 

$$