fzus61 kbuf 082002
glflo 
expires:202609090300;;127737

open lake forecast for lake ontario
national weather service buffalo ny
402 pm edt tue sep 8 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 high pressure ridge averaging 30.2 inches continues to 
exit eastward before a cold front sweeps eastward across lake 
ontario wednesday night. behind the cold front, another ridge 
averaging 30.0 inches should 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.


loz062-090300-
lake ontario open waters from the niagara river to hamlin beach-
402 pm edt tue sep 8 2026

.tonight...east winds 5 to 10 knots becoming south. waves 2 feet
or less. 
.wednesday...south winds 5 to 15 knots becoming southwest 15 to
20 knots. a chance of showers in the morning, then showers likely
early in the afternoon. showers with a chance of thunderstorms
late. waves 1 to 3 feet. 
.wednesday night...southwest winds 15 to 20 knots becoming west
10 to 15 knots. showers with a chance of thunderstorms in the
evening. waves 2 to 4 feet. 
.thursday...west winds 10 to 15 knots. waves 1 to 3 feet. 
.thursday night...northwest winds 15 to 20 knots diminishing to
10 to 15 knots. waves 1 to 3 feet. 
.friday...northwest winds 10 knots or less becoming southeast.
waves 2 feet or less. 
.saturday...south winds 5 to 10 knots becoming southwest. a
chance of showers saturday night. waves 2 feet or less. 
.sunday...southwest winds 10 to 15 knots becoming northwest. a
chance of showers. waves 1 to 2 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kbuf 082002
glflo 
expires:202609090300;;127738

open lake forecast for lake ontario
national weather service buffalo ny
402 pm edt tue sep 8 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 high pressure ridge averaging 30.2 inches continues to 
exit eastward before a cold front sweeps eastward across lake 
ontario wednesday night. behind the cold front, another ridge 
averaging 30.0 inches should 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.


loz063>065-090300-
lake ontario open waters from hamlin beach to the saint lawrence
river-
402 pm edt tue sep 8 2026

.tonight...east winds 5 to 10 knots becoming south and increasing
to 15 to 20 knots. waves 2 feet or less. 
.wednesday...south winds 15 to 20 knots. a chance of showers late
in the morning. showers early in the afternoon, then showers with
a chance of thunderstorms late. waves 1 to 3 feet. 
.wednesday night...southwest winds 15 to 25 knots becoming west.
showers with a chance of thunderstorms in the evening, then a
chance of showers overnight. waves 2 to 4 feet building to 3 to
5 feet. 
.thursday...west winds 15 to 20 knots. waves 3 to 5 feet. 
.thursday night...northwest winds 15 to 20 knots becoming north
10 to 15 knots. waves 3 to 5 feet subsiding to 1 to 3 feet. 
.friday...north winds 5 to 10 knots becoming south. waves 2 feet
or less. 
.saturday...south winds 10 to 15 knots increasing to 15 to
20 knots. a chance of showers saturday night. waves 1 to 3 feet
building to 2 to 4 feet. 
.sunday...southwest winds 15 to 20 knots becoming west 10 to
15 knots. a chance of showers. waves 2 to 4 feet subsiding to
1 to 3 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 081936
glfle 
expires:202609090215;;126998

open lake forecast for lake erie
national weather service cleveland oh
336 pm edt tue sep 8 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...
high pressure 30.20 inches will gradually weaken to 30.00 inches 
wednesday ahead of a cold front that will track across lake erie 
wednesday into wednesday night. a post frontal trough averaging 
29.90 inches lingers on thursday. high pressure builds back to 
30.10 inches friday and will remain into the weekend.


lez164>167-090215-
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-
336 pm edt tue sep 8 2026

.tonight...east winds 5 to 15 knots becoming south 15 to
20 knots. waves 1 to 3 feet. 
.wednesday...southwest winds 15 to 20 knots. a slight chance of
showers and thunderstorms early in the afternoon. showers likely
with a chance of thunderstorms late. waves 2 to 4 feet. 
.wednesday night...southwest winds 15 to 20 knots becoming west
10 to 15 knots. showers likely with a chance of thunderstorms in
the evening. waves 3 to 5 feet subsiding to 1 to 3 feet. 
.thursday...northwest winds 5 to 10 knots. a chance of showers.
waves 1 to 2 feet. 
.thursday night...north winds 5 to 15 knots becoming northeast.
waves 1 to 2 feet. 
.friday...east winds 10 knots or less becoming southeast. waves
2 feet or less. 
.saturday...south winds 5 to 15 knots becoming southwest. waves
1 to 3 feet. 
.sunday...west winds 5 to 15 knots becoming north. a chance of
showers sunday night. waves 1 to 3 feet building to 2 to 4 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 081936
glfle 
expires:202609090215;;126997

open lake forecast for lake erie
national weather service cleveland oh
336 pm edt tue sep 8 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...
high pressure 30.20 inches will gradually weaken to 30.00 inches 
wednesday ahead of a cold front that will track across lake erie 
wednesday into wednesday night. a post frontal trough averaging 
29.90 inches lingers on thursday. high pressure builds back to 
30.10 inches friday and will remain into the weekend.


lez162-163-090215-
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-
336 pm edt tue sep 8 2026

.tonight...east winds 10 to 15 knots becoming southwest. waves
2 feet or less. 
.wednesday...southwest winds 10 to 15 knots becoming west. a
chance of showers and thunderstorms in the afternoon. waves 1 to
3 feet. 
.wednesday night...west winds 10 to 15 knots. a chance of showers
and thunderstorms in the evening. waves 2 feet or less. 
.thursday...west winds 5 to 10 knots becoming northwest. waves
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 becoming southeast. waves
1 foot 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. a chance
of showers. waves 1 to 3 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 081936
glfle 
expires:202609090215;;126999

open lake forecast for lake erie
national weather service cleveland oh
336 pm edt tue sep 8 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...
high pressure 30.20 inches will gradually weaken to 30.00 inches 
wednesday ahead of a cold front that will track across lake erie 
wednesday into wednesday night. a post frontal trough averaging 
29.90 inches lingers on thursday. high pressure builds back to 
30.10 inches friday and will remain into the weekend.


lez061-168-169-090215-
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-
336 pm edt tue sep 8 2026

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

winds and waves higher in and near thunderstorms.

$$

fzus63 kdtx 081942
glflh 
expires:202609090345;;127159

open lake forecast for lake huron
national weather service detroit/pontiac mi
342 pm edt tue sep 8 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 late today and tonight, driving a slow moving cold front
across the great lakes region tonight into wednesday. 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>464-090345-
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 tue sep 8 2026

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


$$

fzus63 kdtx 081942
glflh 
expires:202609090345;;127157

open lake forecast for lake huron
national weather service detroit/pontiac mi
342 pm edt tue sep 8 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 late today and tonight, driving a slow moving cold front
across the great lakes region tonight into wednesday. this system
will provide showers and few thunderstorms to the lakes. high
pressure will expand into the region from the west thursday into
friday.


lhz361-090345-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
342 pm edt tue sep 8 2026

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


$$

fzus63 kdtx 081942
glflh 
expires:202609090345;;127158

open lake forecast for lake huron
national weather service detroit/pontiac mi
342 pm edt tue sep 8 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 late today and tonight, driving a slow moving cold front
across the great lakes region tonight into wednesday. this system
will provide showers and few thunderstorms to the lakes. high
pressure will expand into the region from the west thursday into
friday.


lhz362-363-090345-
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 tue sep 8 2026

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


$$

fzus63 kdtx 081942
glfsc 
expires:202609090345;;127161

lake st clair forecast
national weather service detroit/pontiac mi
342 pm edt tue sep 8 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...low pressure, 29.30 inches, will track across northern
ontario late today and tonight, driving a slow moving cold front
across the great lakes region tonight into wednesday. this system
will provide showers and few thunderstorms to the lakes. high
pressure will expand into the region from the west thursday into
friday.


lcz460-090345-
lake st clair-
342 pm edt tue sep 8 2026

.tonight...southeast winds 10 to 15 knots becoming south 5 to 10
knots after midnight...then becoming southwest 10 to 15 knots early
in the morning. partly cloudy becoming mostly cloudy. waves 2 feet
or less.
.wednesday...southwest winds 10 to 15 knots. mostly cloudy. light
showers likely and a chance of thunderstorms in the afternoon. waves
2 feet or less.
.wednesday night...west winds 10 to 15 knots diminishing to 5 to 10
knots after midnight. mostly cloudy early in the evening becoming
partly cloudy. waves 2 feet or less.
.thursday...northwest winds 5 to 10 knots. partly sunny. waves 2
feet or less.
.thursday night...northeast winds 5 to 10 knots. mostly clear. waves
2 feet or less.
.friday...northeast winds 5 to 10 knots veering to the southeast in
the afternoon and evening. clear. waves 2 feet or less.
.saturday...south winds 10 to 15 knots. mostly clear. waves 2 feet
or less.
.sunday...north winds 10 to 15 knots. partly cloudy. a chance of
showers. waves 2 feet or less.

$$

fzus63 kmkx 081902
glflm 
expires:202609090315;;125857

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
202 pm cdt tue sep 8 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...

southerly winds will increase into tonight as 29.4 inch low 
pressure shifts northeast toward the hudson bay. a cold front will
move across lake michigan on wednesday, bringing a generally 
westerly wind shift across the lake. periods of showers and 
occasional thunderstorms will accompany the approaching/passing 
surface front this afternoon through wednesday morning. severe 
weather isn't expected.

a new area of 30.1 inch high pressure will move from the northern
great plains across lake michigan wednesday night through thursday
night, bringing a period of light and variable winds to the
waters. the next area of 29.3 inch low pressure will shift from
the canadian great plains across the hudson bay friday afternoon
through saturday night, bringing increasing southwest winds. a few
gale force gusts are possible during this time frame, particularly
over the northern third of lake michigan. will be monitoring
trends through late week for possible headlines. a cold front will
move over lake michigan sunday morning, bringing a northwest wind
shift to the waters.


lmz261-362-364-366-563-565-567-868-090315-
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-
202 pm cdt tue sep 8 2026

sheboygan wi to pentwater mi north...

.tonight...south winds to 30 kt becoming southwest. chance of
showers and thunderstorms this evening, then chance of showers
and slight chance of thunderstorms overnight. waves 4 to 6 ft
occasionally to 8 ft. 
.wednesday...southwest winds to 30 kt. chance of showers and
slight chance of thunderstorms in the morning. waves 4 to 6 ft
occasionally to 8 ft. 
.wednesday night...west winds to 30 kt becoming northwest 15 to
25 kt, then diminishing to 10 to 20 kt late. waves 3 to 5 ft. 
.thursday...northwest winds 10 to 20 kt. waves 2 to 4 ft. 
.thursday night...east winds 10 to 15 kt veering to south. waves
1 to 2 ft. 
.friday...south winds 15 to 25 kt increasing to 30 kt. waves 2 to
4 ft building to 4 to 6 ft occasionally to 8 ft.
.friday night...south winds to 30 kt. a few southerly gales to 35
kt are possible. waves 5 to 8 ft occasionally to 10 ft. 
.saturday...southwest winds to 30 kt. a few southwest gales to 35
kt are possible. chance of showers. waves 5 to 8 ft occasionally 
to 10 ft subsiding to 4 to 7 ft occasionally to 9 ft. 
.sunday...northwest winds 10 to 20 kt increasing to 15 to 25 kt.
waves 1 to 3 ft.  

$$

fzus63 kmkx 081902
glflm 
expires:202609090315;;125858

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
202 pm cdt tue sep 8 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...

southerly winds will increase into tonight as 29.4 inch low 
pressure shifts northeast toward the hudson bay. a cold front will
move across lake michigan on wednesday, bringing a generally 
westerly wind shift across the lake. periods of showers and 
occasional thunderstorms will accompany the approaching/passing 
surface front this afternoon through wednesday morning. severe 
weather isn't expected.

a new area of 30.1 inch high pressure will move from the northern
great plains across lake michigan wednesday night through thursday
night, bringing a period of light and variable winds to the
waters. the next area of 29.3 inch low pressure will shift from
the canadian great plains across the hudson bay friday afternoon
through saturday night, bringing increasing southwest winds. a few
gale force gusts are possible during this time frame, particularly
over the northern third of lake michigan. will be monitoring
trends through late week for possible headlines. a cold front will
move over lake michigan sunday morning, bringing a northwest wind
shift to the waters.


lmz080-669-671-673-675-777-779-870-872-874-876-878-090315-
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-
202 pm cdt tue sep 8 2026

sheboygan wi to pentwater mi south...

.tonight...south winds 15 to 25 kt becoming southwest. slight
chance of showers and thunderstorms this evening, then chance of
showers and slight chance of thunderstorms overnight. waves 3 to
5 ft. 
.wednesday...southwest winds 15 to 25 kt becoming west 10 to
20 kt. chance of showers and slight chance of thunderstorms in
the morning, then slight chance of showers in the afternoon.
waves 4 to 6 ft occasionally to 8 ft subsiding to 3 to 5 ft. 
.wednesday night...west winds 10 to 20 kt veering to northwest.
waves 2 to 4 ft. 
.thursday...north winds 10 to 20 kt. waves 2 to 4 ft. 
.thursday night...north winds 10 to 15 kt veering to southeast.
waves 1 to 3 ft subsiding to 1 to 2 ft. 
.friday...south winds 10 to 20 kt increasing to 30 kt in the
afternoon. waves 2 to 4 ft building to 4 to 6 ft occasionally to
8 ft. 
.friday night...south winds to 30 kt. waves 4 to 6 ft
occasionally to 8 ft building to 5 to 8 ft occasionally to 10 ft.
.saturday...southwest winds to 30 kt becoming west. waves 5 to
8 ft occasionally to 10 ft subsiding to 4 to 7 ft occasionally to
9 ft. 
.sunday...north winds 10 to 20 kt. waves 2 to 4 ft.  

$$

fzus63 kmqt 082001
glfls 
expires:202609090800;;127670

open lake forecast for lake superior
national weather service marquette mi
401 pm edt tue sep 8 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...

this afternoon, a 29.4 inch low currently over the canadian prairies 
swings northeast toward northern quebec, deepening to 29.1 by the 
time it reaches hudson bay wednesday afternoon. this sends a 29.8 
inch trough over lake superior and drives gusty surface southerly 
flow on lake superior through tuesday evening, at which point winds 
shift west with frontal passage. strong postfrontal westerlies 
persist until thursday morning; widespread gale-force winds are 
anticipated. ridging to 30.0 inches and subsequent calmer conditions 
follow until friday morning, when a trough of 29.3 inches tracks 
from the great plains north toward hudson bay. friday through 
saturday morning, a tight pressure gradient between 29.6 and 29.9 
inches sits over lake superior as the plains shifts rapidly north, 
tracking through minnesota. expect breezy southerly flow friday 
afternoon through saturday morning as a result of this low's 
passage, and strong westerlies throughout the day on saturday. 
ridging begins to build back in saturday, reaching 29.9 inches by 
sunday morning.




lsz162-090800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
401 pm edt tue sep 8 2026 /301 pm cdt tue sep 8 2026/

...gale watch in effect from wednesday morning through wednesday
afternoon...

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

$$

fzus63 kmqt 082001
glfls 
expires:202609090800;;127671

open lake forecast for lake superior
national weather service marquette mi
401 pm edt tue sep 8 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...

this afternoon, a 29.4 inch low currently over the canadian prairies 
swings northeast toward northern quebec, deepening to 29.1 by the 
time it reaches hudson bay wednesday afternoon. this sends a 29.8 
inch trough over lake superior and drives gusty surface southerly 
flow on lake superior through tuesday evening, at which point winds 
shift west with frontal passage. strong postfrontal westerlies 
persist until thursday morning; widespread gale-force winds are 
anticipated. ridging to 30.0 inches and subsequent calmer conditions 
follow until friday morning, when a trough of 29.3 inches tracks 
from the great plains north toward hudson bay. friday through 
saturday morning, a tight pressure gradient between 29.6 and 29.9 
inches sits over lake superior as the plains shifts rapidly north, 
tracking through minnesota. expect breezy southerly flow friday 
afternoon through saturday morning as a result of this low's 
passage, and strong westerlies throughout the day on saturday. 
ridging begins to build back in saturday, reaching 29.9 inches by 
sunday morning.




lsz263-090800-
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-
401 pm edt tue sep 8 2026

...gale warning in effect from wednesday morning through
wednesday evening...

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

$$

fzus63 kmqt 082001
glfls 
expires:202609090800;;127672

open lake forecast for lake superior
national weather service marquette mi
401 pm edt tue sep 8 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...

this afternoon, a 29.4 inch low currently over the canadian prairies 
swings northeast toward northern quebec, deepening to 29.1 by the 
time it reaches hudson bay wednesday afternoon. this sends a 29.8 
inch trough over lake superior and drives gusty surface southerly 
flow on lake superior through tuesday evening, at which point winds 
shift west with frontal passage. strong postfrontal westerlies 
persist until thursday morning; widespread gale-force winds are 
anticipated. ridging to 30.0 inches and subsequent calmer conditions 
follow until friday morning, when a trough of 29.3 inches tracks 
from the great plains north toward hudson bay. friday through 
saturday morning, a tight pressure gradient between 29.6 and 29.9 
inches sits over lake superior as the plains shifts rapidly north, 
tracking through minnesota. expect breezy southerly flow friday 
afternoon through saturday morning as a result of this low's 
passage, and strong westerlies throughout the day on saturday. 
ridging begins to build back in saturday, reaching 29.9 inches by 
sunday morning.




lsz264-090800-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
401 pm edt tue sep 8 2026

...gale warning in effect from wednesday morning through
wednesday evening...

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

$$

fzus63 kmqt 082001
glfls 
expires:202609090800;;127673

open lake forecast for lake superior
national weather service marquette mi
401 pm edt tue sep 8 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...

this afternoon, a 29.4 inch low currently over the canadian prairies 
swings northeast toward northern quebec, deepening to 29.1 by the 
time it reaches hudson bay wednesday afternoon. this sends a 29.8 
inch trough over lake superior and drives gusty surface southerly 
flow on lake superior through tuesday evening, at which point winds 
shift west with frontal passage. strong postfrontal westerlies 
persist until thursday morning; widespread gale-force winds are 
anticipated. ridging to 30.0 inches and subsequent calmer conditions 
follow until friday morning, when a trough of 29.3 inches tracks 
from the great plains north toward hudson bay. friday through 
saturday morning, a tight pressure gradient between 29.6 and 29.9 
inches sits over lake superior as the plains shifts rapidly north, 
tracking through minnesota. expect breezy southerly flow friday 
afternoon through saturday morning as a result of this low's 
passage, and strong westerlies throughout the day on saturday. 
ridging begins to build back in saturday, reaching 29.9 inches by 
sunday morning.




lsz265-090800-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
401 pm edt tue sep 8 2026

...gale warning in effect from wednesday morning through
wednesday evening...

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

$$

fzus63 kmqt 082001
glfls 
expires:202609090800;;127674

open lake forecast for lake superior
national weather service marquette mi
401 pm edt tue sep 8 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...

this afternoon, a 29.4 inch low currently over the canadian prairies 
swings northeast toward northern quebec, deepening to 29.1 by the 
time it reaches hudson bay wednesday afternoon. this sends a 29.8 
inch trough over lake superior and drives gusty surface southerly 
flow on lake superior through tuesday evening, at which point winds 
shift west with frontal passage. strong postfrontal westerlies 
persist until thursday morning; widespread gale-force winds are 
anticipated. ridging to 30.0 inches and subsequent calmer conditions 
follow until friday morning, when a trough of 29.3 inches tracks 
from the great plains north toward hudson bay. friday through 
saturday morning, a tight pressure gradient between 29.6 and 29.9 
inches sits over lake superior as the plains shifts rapidly north, 
tracking through minnesota. expect breezy southerly flow friday 
afternoon through saturday morning as a result of this low's 
passage, and strong westerlies throughout the day on saturday. 
ridging begins to build back in saturday, reaching 29.9 inches by 
sunday morning.




lsz266-090800-
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-
401 pm edt tue sep 8 2026

...gale warning in effect until 8 pm edt this evening...
...gale warning in effect from wednesday morning through
wednesday evening...

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

$$

fzus63 kmqt 082001
glfls 
expires:202609090800;;127675

open lake forecast for lake superior
national weather service marquette mi
401 pm edt tue sep 8 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...

this afternoon, a 29.4 inch low currently over the canadian prairies 
swings northeast toward northern quebec, deepening to 29.1 by the 
time it reaches hudson bay wednesday afternoon. this sends a 29.8 
inch trough over lake superior and drives gusty surface southerly 
flow on lake superior through tuesday evening, at which point winds 
shift west with frontal passage. strong postfrontal westerlies 
persist until thursday morning; widespread gale-force winds are 
anticipated. ridging to 30.0 inches and subsequent calmer conditions 
follow until friday morning, when a trough of 29.3 inches tracks 
from the great plains north toward hudson bay. friday through 
saturday morning, a tight pressure gradient between 29.6 and 29.9 
inches sits over lake superior as the plains shifts rapidly north, 
tracking through minnesota. expect breezy southerly flow friday 
afternoon through saturday morning as a result of this low's 
passage, and strong westerlies throughout the day on saturday. 
ridging begins to build back in saturday, reaching 29.9 inches by 
sunday morning.




lsz267-090800-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
401 pm edt tue sep 8 2026

...gale warning in effect from wednesday afternoon through late
wednesday night...

.late this afternoon...south winds 20 to 30 knots. a chance of
showers. waves 3 to 5 feet occasionally to 7 feet. 
.tonight...south winds 20 to 30 knots becoming southwest 15 to
25 knots late. a chance of showers and thunderstorms. waves
building to 3 to 6 feet occasionally to 8 feet. 
.wednesday...west winds 15 to 25 knots increasing to gales to
40 knots in the afternoon. waves building to 9 to 12 feet
occasionally to 15 feet. 
.wednesday night...west gales to 35 knots veering northwest after
midnight, then diminishing to 20 to 30 knots late. waves
subsiding to 6 to 9 feet occasionally to 11 feet. 
.thursday...northwest winds 15 to 25 knots diminishing to 10 to
20 knots by mid afternoon. waves subsiding to 2 to 4 feet. 
.thursday night...west winds 5 to 15 knots becoming south 10 to
20 knots after midnight. waves subsiding to calm to 2 feet. 
.friday...south winds 15 to 25 knots. waves building to 3 to
5 feet occasionally to 7 feet. 
.friday night...south winds 20 to 30 knots increasing to gales to
35 knots after midnight. a chance of showers. waves building to
4 to 7 feet occasionally to 9 feet. 
.saturday...west winds 20 to 30 knots. showers likely. waves
building to 5 to 8 feet occasionally to 10 feet, then subsiding
to 3 to 5 feet occasionally to 7 feet. 
.sunday...northwest winds 15 to 25 knots becoming north 10 to
20 knots. waves subsiding to 1 to 3 feet. 

$$