fzus61 kbuf 132008
glflo 
expires:202610140315;;042818

open lake forecast for lake ontario
national weather service buffalo ny
408 pm edt tue oct 13 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 warm front over eastern portions of the lake drifts northeastward 
through this evening. otherwise, a cold front sweeps southeastward 
across the lake tonight. behind the cold front, a high pressure 
ridge averaging 30.2 inches builds from the north-central united 
states and vicinity through thursday. during thursday night through 
friday, the ridge should exit eastward and be followed by a warm 
front sweeping quickly northeastward across the lake and then a cold 
front sweeping quickly eastward across the lake as a low tracks 
northeastward from the southwestern great lakes to near southern 
quebec and deepens to 29.3 inches. behind the cold front, a ridge 
averaging 30.5 inches should build from the west through this 
weekend.


loz063>065-140315-
lake ontario open waters from hamlin beach to the saint lawrence
river-
408 pm edt tue oct 13 2026

.tonight...southwest winds 15 to 20 knots becoming west. showers
likely with a chance of thunderstorms early, then a chance of
showers late this evening. waves 1 to 3 feet building to 3 to
5 feet. 
.wednesday...west winds 10 to 15 knots increasing to 15 to
20 knots. waves 3 to 5 feet subsiding to 2 to 4 feet. 
.wednesday night...northwest winds 15 to 20 knots becoming north.
waves 2 to 4 feet. 
.thursday...northeast winds 5 to 15 knots. waves 1 to 3 feet. 
.thursday night...east winds 10 to 15 knots becoming southeast
and increasing to 15 to 25 knots. a chance of showers in the
evening, then showers overnight. waves 1 to 3 feet building to
2 to 4 feet. 
.friday...southwest winds 15 to 25 knots becoming northwest and
increasing to 35 knot gales. rain showers. waves 3 to 6 feet
building to 10 to 14 feet. waves occasionally around 18 feet. 
.saturday...northwest gales to 35 knots becoming west and
diminishing to 15 to 20 knots. a chance of rain showers during
the day. waves 10 to 14 feet subsiding to 3 to 6 feet. waves
occasionally around 18 feet. 
.sunday...west winds 15 to 20 knots becoming south. waves 3 to
5 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kbuf 132008
glflo 
expires:202610140315;;042817

open lake forecast for lake ontario
national weather service buffalo ny
408 pm edt tue oct 13 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 warm front over eastern portions of the lake drifts northeastward 
through this evening. otherwise, a cold front sweeps southeastward 
across the lake tonight. behind the cold front, a high pressure 
ridge averaging 30.2 inches builds from the north-central united 
states and vicinity through thursday. during thursday night through 
friday, the ridge should exit eastward and be followed by a warm 
front sweeping quickly northeastward across the lake and then a cold 
front sweeping quickly eastward across the lake as a low tracks 
northeastward from the southwestern great lakes to near southern 
quebec and deepens to 29.3 inches. behind the cold front, a ridge 
averaging 30.5 inches should build from the west through this 
weekend.


loz062-140315-
lake ontario open waters from the niagara river to hamlin beach-
408 pm edt tue oct 13 2026

.tonight...southwest winds 15 to 20 knots becoming west. waves
2 to 4 feet. 
.wednesday...west winds 10 to 15 knots becoming northwest. waves
1 to 3 feet. 
.wednesday night...northwest winds 10 to 15 knots becoming
northeast. waves 1 to 3 feet. 
.thursday...northeast winds 10 to 15 knots becoming east 15 to
20 knots. waves 1 to 3 feet. 
.thursday night...east winds 15 to 20 knots becoming southeast
10 to 15 knots. showers. waves 2 to 4 feet. 
.friday...west winds 15 to 25 knots becoming northwest and
increasing to 35 knot gales. showers. waves 2 to 4 feet building
to 9 to 12 feet. waves occasionally around 15 feet. 
.saturday...northwest winds to 30 knots becoming west 15 to
25 knots. waves 8 to 11 feet subsiding to 3 to 5 feet. waves
occasionally around 14 feet. 
.sunday...west winds 15 to 20 knots becoming southwest. waves
3 to 5 feet. 

$$

fzus61 kcle 131950
glfle 
expires:202610140215;;041766

open lake forecast for lake erie
national weather service cleveland oh
350 pm edt tue oct 13 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...
low pressure 29.80 inches passing through the central and eastern
great lakes tonight will drag a cold front slowly across lake
erie. the front will remain just south of the lake through
wednesday morning before pushing south wednesday afternoon. high 
pressure 30.10 inches briefly builds over the upper great lakes 
wednesday night and thursday. a strong cold front will pass over 
the region friday morning as low pressure 29.60 inches moves north
of the lake. high pressure 30.40 inches builds in from the west 
saturday and sunday.


lez162-163-140215-
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-
350 pm edt tue oct 13 2026

.tonight...west winds 10 to 15 knots becoming northwest less than
10 knots. showers likely with a slight chance of thunderstorms
late. waves 1 to 3 feet subsiding to 1 foot or less. 
.wednesday...northwest winds 5 to 10 knots becoming north. a
chance of showers with a slight chance of thunderstorms early,
then a chance of showers late in the morning. a slight chance of
showers early in the afternoon. waves 1 foot or less. 
.wednesday night...northeast winds 10 to 15 knots increasing to
15 to 20 knots. waves 1 to 3 feet building to 2 to 4 feet. 
.thursday...northeast winds 15 to 20 knots becoming east 10 to
15 knots. a chance of showers in the afternoon. waves 1 to
3 feet. 
.thursday night...east winds 10 to 15 knots becoming west and
increasing to 15 to 25 knots. showers. waves 1 to 3 feet building
to 2 to 4 feet. 
.friday...west winds to 30 knots becoming northwest and
increasing to 35 knot gales. a chance of showers during the day.
waves 3 to 6 feet building to 4 to 7 feet. waves occasionally
around 9 feet. 
.saturday...northwest winds to 30 knots becoming southwest and
diminishing to 10 to 15 knots. waves 3 to 5 feet subsiding to
1 to 3 feet. 
.sunday...southwest winds 10 to 15 knots increasing to 15 to
20 knots. waves 1 to 3 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 131950
glfle 
expires:202610140215;;041767

open lake forecast for lake erie
national weather service cleveland oh
350 pm edt tue oct 13 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...
low pressure 29.80 inches passing through the central and eastern
great lakes tonight will drag a cold front slowly across lake
erie. the front will remain just south of the lake through
wednesday morning before pushing south wednesday afternoon. high 
pressure 30.10 inches briefly builds over the upper great lakes 
wednesday night and thursday. a strong cold front will pass over 
the region friday morning as low pressure 29.60 inches moves north
of the lake. high pressure 30.40 inches builds in from the west 
saturday and sunday.


lez164>166-140215-
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-
350 pm edt tue oct 13 2026

.tonight...west winds 15 to 20 knots becoming northwest and
diminishing to 10 knots or less after midnight. a chance of
showers with a slight chance of thunderstorms late. waves 3 to
6 feet subsiding to 1 to 3 feet. 
.wednesday...northwest winds 5 to 15 knots becoming north. a
chance of showers with a slight chance of thunderstorms early,
then a chance of showers. waves 2 feet or less. 
.wednesday night...north winds 15 to 20 knots becoming northeast.
waves 1 to 3 feet building to 2 to 4 feet. 
.thursday...east winds 10 to 15 knots. a chance of showers in the
afternoon. waves 2 to 4 feet. 
.thursday night...east winds 10 to 15 knots becoming southwest
and increasing to 15 to 25 knots. showers with a chance of
thunderstorms in the evening, then showers overnight. waves 2 to
3 feet building to 3 to 5 feet. 
.friday...west gales to 35 knots becoming northwest to 40 knots.
showers during the day, then a chance of showers friday night.
waves 7 to 10 feet building to 9 to 12 feet. waves occasionally
around 15 feet. 
.saturday...northwest winds to 30 knots becoming southwest and
diminishing to 15 to 20 knots. waves 7 to 10 feet subsiding to
2 to 4 feet. waves occasionally around 13 feet. 
.sunday...southwest winds 15 to 20 knots. waves 2 to 4 feet
building to 3 to 5 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 131950
glfle 
expires:202610140215;;041768

open lake forecast for lake erie
national weather service cleveland oh
350 pm edt tue oct 13 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...
low pressure 29.80 inches passing through the central and eastern
great lakes tonight will drag a cold front slowly across lake
erie. the front will remain just south of the lake through
wednesday morning before pushing south wednesday afternoon. high 
pressure 30.10 inches briefly builds over the upper great lakes 
wednesday night and thursday. a strong cold front will pass over 
the region friday morning as low pressure 29.60 inches moves north
of the lake. high pressure 30.40 inches builds in from the west 
saturday and sunday.


lez061-167>169-140215-
ripley to buffalo ny extending from 5nm off shoreline to us-
canadian border-willowick to geneva-on-the-
lake oh beyond 5nm off shoreline to us-canadian border-geneva-on-
the-lake to conneaut oh beyond 5 nm off shoreline to us-
canadian border-
conneaut oh to ripley ny beyond 5 nm off shoreline to us-
canadian border-
350 pm edt tue oct 13 2026

.tonight...southwest winds 15 to 25 knots becoming northwest and
diminishing to 5 to 15 knots. a slight chance of showers and
thunderstorms late. waves 3 to 6 feet subsiding to 1 to 3 feet. 
.wednesday...northwest winds 5 to 15 knots. a chance of showers
with a slight chance of thunderstorms early, then a slight chance
of showers. waves 1 to 2 feet. 
.wednesday night...north winds 10 to 15 knots becoming northeast.
waves 1 to 3 feet building to 2 to 4 feet. 
.thursday...northeast winds 10 to 15 knots. a chance of showers
in the afternoon. waves 2 to 4 feet subsiding to 1 to 3 feet. 
.thursday night...east winds 10 to 15 knots becoming southwest
and increasing to 15 to 25 knots. showers. waves 1 to 3 feet
building to 3 to 5 feet. 
.friday...west winds to 30 knots becoming northwest and
increasing to 40 knot gales. showers during the day, then a
chance of showers friday night. waves 7 to 10 feet building to
9 to 12 feet. waves occasionally around 15 feet. 
.saturday...northwest gales to 35 knots becoming southwest and
diminishing to 15 to 20 knots. waves 7 to 10 feet subsiding to
2 to 4 feet. waves occasionally around 13 feet. 
.sunday...southwest winds 15 to 25 knots. waves 3 to 5 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus63 kdtx 131959
glfsc 
expires:202610140400;;042019

lake st clair forecast
national weather service detroit/pontiac mi
359 pm edt tue oct 13 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, 29.60 inches, will depart the eastern
great lakes this evening. departure of this system will then
facilitate the passage of a cold front tonight and tomorrow
morning, bringing breezy northwest flow across northern lake
huron.


lcz460-140400-
lake st clair-
359 pm edt tue oct 13 2026

.tonight...west winds 15 to 20 knots becoming northwest 5 to 10
knots. clear becoming partly cloudy. a chance of light rain early in
the morning. waves 2 feet or less.
.wednesday...north winds 5 to 10 knots. mostly cloudy. a chance of
light rain early in the morning. waves 2 feet or less.
.wednesday night...northeast winds 10 to 15 knots increasing to 15
to 20 knots in the late evening and overnight. partly cloudy. waves
1 to 3 feet.
.thursday...east winds 10 to 15 knots. mostly cloudy. a chance of
light rain early in the afternoon. waves 2 feet or less.
.thursday night...southeast winds 10 to 15 knots becoming west 15 to
20 knots after midnight. light rain. waves 1 to 3 feet.
.friday...northwest winds 20 to 25 knots with gusts to 30 knots
increasing to 35 knot gales with gusts to 40 knot gales. mostly
cloudy with light rain in the morning...then partly cloudy with a
chance of light rain in the afternoon and evening. waves 3 to 5 feet
building to 4 to 6 feet in the evening. waves occasionally around 8
feet.  a gale warning may be needed.
.saturday...southwest at 35 knot gales with gusts to 40 knot gales.
clear. waves 3 to 5 feet. waves occasionally around 7 feet.
.sunday...southwest winds 15 to 20 knots. clear. waves 1 to 3 feet.

$$

fzus63 kdtx 131958
glflh 
expires:202610140400;;041984

open lake forecast for lake huron
national weather service detroit/pontiac mi
358 pm edt tue oct 13 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, 29.60 inches, will depart the eastern
great lakes this evening. departure of this system will then
facilitate the passage of a cold front tonight and tomorrow
morning, bringing breezy northwest flow across northern lake
huron.


lhz462>464-140400-
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-
358 pm edt tue oct 13 2026

.tonight...northwest winds 10 to 15 knots. waves 2 to 4 feet. 
.wednesday...northwest winds 10 to 15 knots. waves 2 to 4 feet. 
.wednesday night...north winds 10 to 15 knots. waves 3 to 5 feet.
.thursday...east winds 10 to 15 knots becoming southeast 5 to
10 knots early in the afternoon. a chance of rain in the
afternoon. waves 2 to 4 feet subsiding to 1 to 3 feet in the late
morning and afternoon. 
.thursday night...southeast winds 5 to 10 knots becoming south
10 to 15 knots after midnight. rain. waves 1 to 3 feet. 
.friday...northwest winds 20 to 25 knots with gusts to around
30 knots increasing to 40 knot gales with gusts to 45 knot gales.
rain. a chance of rain late in the evening. waves 5 to 7 feet
building to 18 to 23 feet. waves occasionally around 28 feet. a
gale warning may be needed. 
.saturday...northwest winds to 30 knots with gusts to 35 knot
gales decreasing to 15 to 20 knots in the late morning and early
afternoon...then backing to the southwest . waves 14 to 18 feet
subsiding to 3 to 5 feet. waves occasionally around 23 feet. 
.sunday...southwest winds 15 to 20 knots becoming south 20 to
25 knots by midnight. waves 4 to 6 feet. waves occasionally
around 8 feet. 


$$

fzus63 kdtx 131958
glflh 
expires:202610140400;;041983

open lake forecast for lake huron
national weather service detroit/pontiac mi
358 pm edt tue oct 13 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, 29.60 inches, will depart the eastern
great lakes this evening. departure of this system will then
facilitate the passage of a cold front tonight and tomorrow
morning, bringing breezy northwest flow across northern lake
huron.


lhz362-363-140400-
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-
358 pm edt tue oct 13 2026

.tonight...northwest winds 10 to 15 knots. waves 2 to 4 feet. 
.wednesday...northwest winds 15 to 20 knots. waves 4 to 6 feet.
waves occasionally around 8 feet. 
.wednesday night...northwest winds 15 to 20 knots becoming north
10 to 15 knots in the late evening and overnight. waves 3 to
5 feet. 
.thursday...east winds 10 to 15 knots decreasing to 5 to 10 knots
early in the afternoon. a chance of rain in the afternoon. waves
1 to 3 feet. 
.thursday night...southeast winds 5 to 10 knots veering to the
southwest after midnight. rain. waves 2 feet or less. 
.friday...northwest winds 15 to 20 knots with gusts to 35 knot
gales increasing to 40 knot gales with gusts to 45 knot gales.
rain. waves 5 to 7 feet building to 15 to 20 feet. waves
occasionally around 25 feet. a gale warning may be needed. 
.saturday...northwest winds 20 to 25 knots with gusts to 35 knot
gales becoming west 15 to 20 knots in the late morning and early
afternoon...then decreasing to 10 to 15 knots early in the
evening becoming southwest 15 to 20 knots by midnight. waves
10 to 14 feet subsiding to 3 to 5 feet. waves occasionally around
18 feet. 
.sunday...southwest winds 15 to 20 knots increasing to 20 to
25 knots with gusts to 35 knot gales. waves 6 to 9 feet. waves
occasionally around 12 feet. 


$$

fzus63 kdtx 131958
glflh 
expires:202610140400;;041982

open lake forecast for lake huron
national weather service detroit/pontiac mi
358 pm edt tue oct 13 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, 29.60 inches, will depart the eastern
great lakes this evening. departure of this system will then
facilitate the passage of a cold front tonight and tomorrow
morning, bringing breezy northwest flow across northern lake
huron.


lhz361-140400-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
358 pm edt tue oct 13 2026

.tonight...northwest winds 10 to 15 knots increasing to 15 to
20 knots after midnight. waves 1 to 3 feet building to 2 to
4 feet after midnight. 
.wednesday...northwest winds 10 to 15 knots increasing to 15 to
20 knots in the late morning and early afternoon...then
decreasing to 10 to 15 knots late in the afternoon. waves 2 to
4 feet. 
.wednesday night...northwest winds 10 to 15 knots veering to the
northeast after midnight. waves 2 to 4 feet subsiding to 1 to
3 feet in the late evening and overnight. 
.thursday...east winds 10 to 15 knots. waves 1 to 3 feet. 
.thursday night...southeast winds 10 to 15 knots decreasing to
5 to 10 knots in the late evening and overnight. rain. waves 1 to
3 feet. 
.friday...northwest winds 15 to 20 knots with gusts to 35 knot
gales increasing to 30 knots with gusts to 45 knot gales late in
the morning...then becoming north at 35 knot gales with gusts to
45 knot gales late in the afternoon decreasing to 30 knots with
gusts to 40 knot gales late in the evening. rain. waves 5 to
7 feet building to 8 to 12 feet. waves occasionally around
15 feet. a gale warning may be needed. 
.saturday...northwest winds 15 to 20 knots with gusts to around
30 knots becoming west 10 to 15 knots. waves 5 to 7 feet
subsiding to 2 to 4 feet. waves occasionally around 10 feet. 
.sunday...southwest winds 15 to 20 knots with gusts to around
30 knots decreasing to 10 to 15 knots with gusts to around
30 knots . waves 2 to 4 feet. 


$$

fzus63 kmkx 131948
glflm 
expires:202610140330;;041763

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
248 pm cdt tue oct 13 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...

northwest winds this afternoon will gradually become northerly 
for most of the lake this evening into tonight between a 
departing low pressure over the eastern great lakes and an 
approaching high pressure around 30.3 inches. winds will increase
to 10 to 20 knots by the wednesday afternoon, especially across 
the southern half of lake michigan. winds will then become 
easterly wednesday night into thursday as the high pressure shifts
eastward, with the stronger winds remaining over the southern 
half of the lake. then two areas of low pressure are progged to 
merge over the great lakes region into a single low pressure 
toward the end of the week. this low pressure looks to deepen to 
around 29.5 inches as it shifts into the eastern great lakes later
thursday through friday. expect winds to increase and shift to 
the northwest on the backside of the low pressure and behind its 
associated cold front. there is increasing confidence in a period 
of gales, with a few gusts potentially approaching storm force for
the end of the week into the weekend.



lmz080-669-671-673-675-777-779-870-872-874-876-878-140330-
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-
248 pm cdt tue oct 13 2026

sheboygan wi to pentwater mi south...

.tonight...north winds 5 to 10 kt. chance of showers this
evening, then slight chance of showers and thunderstorms
overnight. waves 1 to 3 ft subsiding to 1 to 2 ft. 
.wednesday...north winds 10 to 15 kt increasing to 10 to 20 kt.
waves 3 to 5 ft. 
.wednesday night...north winds 10 to 20 kt becoming east. waves
4 to 6 ft occasionally to 8 ft. 
.thursday...east winds 10 to 20 kt. chance of showers in the
morning, then showers in the afternoon. waves 4 to 6 ft
occasionally to 8 ft. 
.thursday night...northeast winds 10 to 15 kt backing to
northwest gales to 35 kt overnight. showers. waves 3 to 5 ft
building to 8 to 12 ft occasionally to 16 ft. 
.friday...northwest gales to 45 kt. chance of showers. waves
18 to 23 ft occasionally to 30 ft. 
.friday night...north storm force winds to 50 kt diminishing to
gales to 35 kt. waves 18 to 23 ft occasionally to 30 ft subsiding
to 15 to 20 ft occasionally to 26 ft. 
.saturday...northwest winds 10 to 20 kt becoming southwest to
30 kt. waves 7 to 10 ft occasionally to 13 ft subsiding to 4 to
6 ft occasionally to 8 ft. 
.sunday...southwest gales to 35 kt. waves 10 to 14 ft
occasionally to 18 ft.  

$$

fzus63 kmkx 131948
glflm 
expires:202610140330;;041762

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
248 pm cdt tue oct 13 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...

northwest winds this afternoon will gradually become northerly 
for most of the lake this evening into tonight between a 
departing low pressure over the eastern great lakes and an 
approaching high pressure around 30.3 inches. winds will increase
to 10 to 20 knots by the wednesday afternoon, especially across 
the southern half of lake michigan. winds will then become 
easterly wednesday night into thursday as the high pressure shifts
eastward, with the stronger winds remaining over the southern 
half of the lake. then two areas of low pressure are progged to 
merge over the great lakes region into a single low pressure 
toward the end of the week. this low pressure looks to deepen to 
around 29.5 inches as it shifts into the eastern great lakes later
thursday through friday. expect winds to increase and shift to 
the northwest on the backside of the low pressure and behind its 
associated cold front. there is increasing confidence in a period 
of gales, with a few gusts potentially approaching storm force for
the end of the week into the weekend.



lmz261-362-364-366-563-565-567-868-140330-
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-
248 pm cdt tue oct 13 2026

sheboygan wi to pentwater mi north...

.tonight...north winds 10 to 20 kt becoming northwest. waves 1 to
3 ft. 
.wednesday...north winds 10 to 20 kt. waves 2 to 4 ft. 
.wednesday night...north winds 10 to 20 kt becoming east. waves
2 to 4 ft. 
.thursday...southeast winds 10 to 15 kt. waves 2 to 4 ft. 
.thursday night...southwest winds 10 to 15 kt becoming northwest
gales to 35 kt overnight. rain showers. waves 1 to 3 ft building
to 6 to 9 ft occasionally to 12 ft. 
.friday...northwest gales to 45 kt becoming north. rain showers
likely in the morning, then chance of rain showers in the
afternoon. waves 12 to 16 ft occasionally to 21 ft building to
14 to 18 ft occasionally to 23 ft. 
.friday night...north gales to 45 kt becoming northwest gales to
35 kt. waves 14 to 18 ft occasionally to 23 ft subsiding to 10 to
14 ft occasionally to 18 ft. 
.saturday...west winds 15 to 25 kt becoming southwest to 30 kt.
waves 4 to 7 ft occasionally to 9 ft subsiding to 4 to 6 ft
occasionally to 8 ft. 
.sunday...southwest gales to 40 kt. waves 10 to 14 ft
occasionally to 18 ft.  

$$

fzus63 kmqt 132001
glfls 
expires:202610140800;;042242

open lake forecast for lake superior
national weather service marquette mi
401 pm edt tue oct 13 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...

lake superior remains situated between a 29.6 inch low over 
wisconsin and a 30.2 inch high over quebec. ridging dominates over 
lake superior midweek as the low marches east and high pressure of 
30.2 inches builds over the dakotas by wednesday afternoon. the high 
further builds to 30.3 inches over lake superior wednesday night 
while a 29.9 inch low develops over saskatchewan. by thursday 
evening, this low weakens to 29.9 inches over northern ontario as 
the high moves to new england, then the low rapidly deepens into 
friday while tracking towards new england. meanwhile, 30.6 inch high 
pressure expands across the plains for friday. pressure increases 
rapidly over the upper great lakes friday afternoon into saturday, 
reaching 30.4 inches by saturday morning, then decreasing to 30.0 
inches by saturday night as the high collapses southeast.




lsz162-140800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
401 pm edt tue oct 13 2026 /301 pm cdt tue oct 13 2026/

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

$$

fzus63 kmqt 132001
glfls 
expires:202610140800;;042243

open lake forecast for lake superior
national weather service marquette mi
401 pm edt tue oct 13 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...

lake superior remains situated between a 29.6 inch low over 
wisconsin and a 30.2 inch high over quebec. ridging dominates over 
lake superior midweek as the low marches east and high pressure of 
30.2 inches builds over the dakotas by wednesday afternoon. the high 
further builds to 30.3 inches over lake superior wednesday night 
while a 29.9 inch low develops over saskatchewan. by thursday 
evening, this low weakens to 29.9 inches over northern ontario as 
the high moves to new england, then the low rapidly deepens into 
friday while tracking towards new england. meanwhile, 30.6 inch high 
pressure expands across the plains for friday. pressure increases 
rapidly over the upper great lakes friday afternoon into saturday, 
reaching 30.4 inches by saturday morning, then decreasing to 30.0 
inches by saturday night as the high collapses southeast.




lsz263-140800-
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 oct 13 2026

.late this afternoon...west winds 5 to 15 knots. waves 2 to
4 feet subsiding to 1 to 3 feet. 
.tonight...west winds 5 to 15 knots becoming northwest 10 to
20 knots after midnight. waves subsiding to calm to 2 feet, then
building to 1 to 3 feet. 
.wednesday...northwest winds 10 to 20 knots diminishing to 5 to
15 knots in the afternoon. waves subsiding to calm to 2 feet. 
.wednesday night...east winds less than 10 knots becoming
southeast 5 to 15 knots late. waves calm to 2 feet. 
.thursday...south winds 5 to 15 knots becoming southwest 10 to
20 knots by mid afternoon. a chance of showers by mid afternoon.
waves calm to 2 feet. 
.thursday night...west winds 20 to 30 knots becoming northwest
gales to 40 knots after midnight. showers likely through
midnight, then a chance of showers after midnight. waves building
to 9 to 12 feet occasionally to 15 feet. 
.friday...north gales to 45 knots becoming northwest gales to
40 knots by mid afternoon. waves building to 10 to 14 feet
occasionally to 18 feet, then subsiding to 5 to 8 feet
occasionally to 10 feet. 
.friday night...northwest winds 20 to 30 knots becoming west
10 to 20 knots after midnight. waves subsiding to 1 to 3 feet. 
.saturday...southwest gales to 40 knots. waves building to 4 to
7 feet occasionally to 9 feet, then subsiding to 3 to 5 feet
occasionally to 7 feet. 
.sunday...southwest gales to 45 knots becoming west 20 to
30 knots. waves subsiding to 1 to 3 feet. 

$$

fzus63 kmqt 132001
glfls 
expires:202610140800;;042244

open lake forecast for lake superior
national weather service marquette mi
401 pm edt tue oct 13 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...

lake superior remains situated between a 29.6 inch low over 
wisconsin and a 30.2 inch high over quebec. ridging dominates over 
lake superior midweek as the low marches east and high pressure of 
30.2 inches builds over the dakotas by wednesday afternoon. the high 
further builds to 30.3 inches over lake superior wednesday night 
while a 29.9 inch low develops over saskatchewan. by thursday 
evening, this low weakens to 29.9 inches over northern ontario as 
the high moves to new england, then the low rapidly deepens into 
friday while tracking towards new england. meanwhile, 30.6 inch high 
pressure expands across the plains for friday. pressure increases 
rapidly over the upper great lakes friday afternoon into saturday, 
reaching 30.4 inches by saturday morning, then decreasing to 30.0 
inches by saturday night as the high collapses southeast.




lsz264-140800-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
401 pm edt tue oct 13 2026

.late this afternoon...northwest winds 5 to 15 knots. waves 2 to
4 feet subsiding to 1 to 3 feet. 
.tonight...northwest winds 5 to 15 knots increasing to 10 to
20 knots after midnight. waves subsiding to calm to 2 feet, then
building to 1 to 3 feet. 
.wednesday...northwest winds 10 to 20 knots diminishing to 5 to
15 knots late. waves building to 2 to 4 feet, then subsiding to
calm to 2 feet. 
.wednesday night...north winds less than 10 knots veering east
after midnight, then becoming southeast 5 to 15 knots late. waves
calm to 2 feet. 
.thursday...south winds 5 to 15 knots veering southwest by mid
afternoon. a chance of showers by mid afternoon. waves calm to
2 feet. 
.thursday night...west winds 20 to 30 knots becoming northwest
gales to 40 knots after midnight. showers. waves building to 8 to
11 feet occasionally to 14 feet. 
.friday...north storm force winds to 55 knots. waves building to
12 to 17 feet occasionally to 21 feet, then subsiding to 9 to
12 feet occasionally to 15 feet. 
.friday night...northwest gales to 35 knots becoming west 10 to
20 knots after midnight. waves subsiding to 2 to 4 feet. 
.saturday...southwest winds 20 to 30 knots increasing to gales to
35 knots. waves building to 3 to 6 feet occasionally to 8 feet,
then subsiding to 2 to 4 feet. 
.sunday...southwest gales to 35 knots becoming west 20 to
30 knots. waves building to 7 to 10 feet occasionally to 13 feet,
then subsiding to 2 to 4 feet. 

$$

fzus63 kmqt 132001
glfls 
expires:202610140800;;042245

open lake forecast for lake superior
national weather service marquette mi
401 pm edt tue oct 13 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...

lake superior remains situated between a 29.6 inch low over 
wisconsin and a 30.2 inch high over quebec. ridging dominates over 
lake superior midweek as the low marches east and high pressure of 
30.2 inches builds over the dakotas by wednesday afternoon. the high 
further builds to 30.3 inches over lake superior wednesday night 
while a 29.9 inch low develops over saskatchewan. by thursday 
evening, this low weakens to 29.9 inches over northern ontario as 
the high moves to new england, then the low rapidly deepens into 
friday while tracking towards new england. meanwhile, 30.6 inch high 
pressure expands across the plains for friday. pressure increases 
rapidly over the upper great lakes friday afternoon into saturday, 
reaching 30.4 inches by saturday morning, then decreasing to 30.0 
inches by saturday night as the high collapses southeast.




lsz265-140800-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
401 pm edt tue oct 13 2026

.late this afternoon...northwest winds 15 to 25 knots. waves 2 to
4 feet. 
.tonight...northwest winds 15 to 25 knots increasing to 20 to
30 knots late. waves subsiding to 1 to 3 feet, then building to
2 to 4 feet. 
.wednesday...northwest winds 20 to 30 knots diminishing to 10 to
20 knots. waves subsiding to 1 to 3 feet. 
.wednesday night...north winds 5 to 15 knots veering northeast
after midnight, then becoming southeast 10 to 20 knots late.
waves subsiding to calm to 2 feet. 
.thursday...south winds 10 to 20 knots. showers likely by mid
afternoon. waves calm to 2 feet. 
.thursday night...west winds 20 to 30 knots becoming northwest
gales to 45 knots after midnight. showers. waves building to 9 to
12 feet occasionally to 15 feet. 
.friday...north storm force winds to 55 knots. showers likely
through early afternoon. waves building to 12 to 17 feet
occasionally to 21 feet. 
.friday night...northwest gales to 45 knots becoming west 20 to
30 knots after midnight. waves subsiding to 2 to 4 feet. 
.saturday...west winds 15 to 25 knots becoming southwest gales to
35 knots. waves subsiding to calm to 2 feet, then building to
2 to 4 feet. 
.sunday...southwest gales to 35 knots diminishing to 20 to
30 knots. waves building to 3 to 5 feet occasionally to 7 feet,
then subsiding to calm to 2 feet. 

$$

fzus63 kmqt 132001
glfls 
expires:202610140800;;042246

open lake forecast for lake superior
national weather service marquette mi
401 pm edt tue oct 13 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...

lake superior remains situated between a 29.6 inch low over 
wisconsin and a 30.2 inch high over quebec. ridging dominates over 
lake superior midweek as the low marches east and high pressure of 
30.2 inches builds over the dakotas by wednesday afternoon. the high 
further builds to 30.3 inches over lake superior wednesday night 
while a 29.9 inch low develops over saskatchewan. by thursday 
evening, this low weakens to 29.9 inches over northern ontario as 
the high moves to new england, then the low rapidly deepens into 
friday while tracking towards new england. meanwhile, 30.6 inch high 
pressure expands across the plains for friday. pressure increases 
rapidly over the upper great lakes friday afternoon into saturday, 
reaching 30.4 inches by saturday morning, then decreasing to 30.0 
inches by saturday night as the high collapses southeast.




lsz266-140800-
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 oct 13 2026

.late this afternoon...northwest winds 10 to 20 knots. waves 2 to
4 feet. 
.tonight...northwest winds 10 to 20 knots increasing to 20 to
30 knots. waves subsiding to 1 to 3 feet, then building to 3 to
5 feet occasionally to 7 feet. 
.wednesday...northwest winds 15 to 25 knots diminishing to 10 to
20 knots late. waves subsiding to 2 to 4 feet. 
.wednesday night...north winds 5 to 15 knots veering northeast
after midnight, then veering southeast late. waves subsiding to
calm to 2 feet. 
.thursday...south winds 10 to 20 knots. showers likely by mid
afternoon. waves calm to 2 feet. 
.thursday night...southwest winds 20 to 30 knots becoming
northwest gales to 45 knots after midnight. showers. waves
building to 9 to 12 feet occasionally to 15 feet. 
.friday...north storm force winds to 55 knots. a chance of
showers. waves building to 15 to 20 feet occasionally to 25 feet.
.friday night...northwest gales to 45 knots diminishing to 20 to
30 knots after midnight. waves subsiding to 4 to 7 feet
occasionally to 9 feet. 
.saturday...west winds 10 to 20 knots becoming southwest 20 to
30 knots. waves subsiding to 2 to 4 feet, then building to 4 to
7 feet occasionally to 9 feet. 
.sunday...south gales to 35 knots becoming southwest 20 to
30 knots. waves building to 5 to 8 feet occasionally to 10 feet,
then subsiding to 2 to 4 feet. 

$$

fzus63 kmqt 132001
glfls 
expires:202610140800;;042247

open lake forecast for lake superior
national weather service marquette mi
401 pm edt tue oct 13 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...

lake superior remains situated between a 29.6 inch low over 
wisconsin and a 30.2 inch high over quebec. ridging dominates over 
lake superior midweek as the low marches east and high pressure of 
30.2 inches builds over the dakotas by wednesday afternoon. the high 
further builds to 30.3 inches over lake superior wednesday night 
while a 29.9 inch low develops over saskatchewan. by thursday 
evening, this low weakens to 29.9 inches over northern ontario as 
the high moves to new england, then the low rapidly deepens into 
friday while tracking towards new england. meanwhile, 30.6 inch high 
pressure expands across the plains for friday. pressure increases 
rapidly over the upper great lakes friday afternoon into saturday, 
reaching 30.4 inches by saturday morning, then decreasing to 30.0 
inches by saturday night as the high collapses southeast.




lsz267-140800-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
401 pm edt tue oct 13 2026

.late this afternoon...northwest winds 10 to 20 knots. waves calm
to 2 feet building to 1 to 3 feet. 
.tonight...northwest winds 15 to 25 knots. waves building to 3 to
6 feet occasionally to 8 feet. 
.wednesday...northwest winds 15 to 25 knots. waves subsiding to
2 to 4 feet. 
.wednesday night...north winds 10 to 20 knots becoming northeast
5 to 15 knots after midnight, then becoming east 10 to 20 knots
late. waves subsiding to calm to 2 feet. 
.thursday...southeast winds 10 to 20 knots veering south by mid
afternoon. a chance of showers by mid afternoon. waves building
to 1 to 3 feet, then subsiding to calm to 2 feet. 
.thursday night...south winds 10 to 20 knots becoming northwest
gales to 35 knots after midnight. showers. waves building to 7 to
10 feet occasionally to 13 feet. 
.friday...north storm force winds to 50 knots. showers likely
through early afternoon. waves building to 15 to 20 feet
occasionally to 25 feet. 
.friday night...north gales to 40 knots becoming northwest 20 to
30 knots after midnight. waves subsiding to 5 to 8 feet
occasionally to 10 feet. 
.saturday...west winds 15 to 25 knots becoming southwest 20 to
30 knots. waves subsiding to 1 to 3 feet, then building to 4 to
7 feet occasionally to 9 feet. 
.sunday...south winds 20 to 30 knots becoming southwest 15 to
25 knots. waves building to 5 to 8 feet occasionally to 10 feet,
then subsiding to 2 to 4 feet. 

$$