fzus61 kbuf 131410
glflo 
expires:202604132100;;299910

open lake forecast for lake ontario
national weather service buffalo ny
1010 am edt mon apr 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 29.3 inch low will move across northern quebec today, 
with a trailing weak trough crossing the lake. a 29.6 inch low will 
then move into the central great lakes tuesday morning before 
weakening across the saint lawrence valley tuesday night. another 
29.6 inch low will move into the central great lakes wednesday night 
before reaching southern quebec thursday night. a 30.0 inch high is 
then forecast to build from the central great lakes friday to the 
lower great lakes saturday.


loz062-132100-
lake ontario open waters from the niagara river to hamlin beach-
1010 am edt mon apr 13 2026

.rest of today...southwest winds 15 to 25 knots. showers late
this morning. waves 3 to 6 feet. 
.tonight...west winds 5 to 15 knots becoming southeast 10 knots
or less. a chance of showers late. waves 2 to 4 feet subsiding to
1 foot or less. 
.tuesday...east winds 5 to 10 knots becoming southwest and
increasing to 15 to 20 knots. showers with a chance of
thunderstorms. waves 2 feet or less building to 3 to 5 feet. 
.tuesday night...southwest winds 15 to 20 knots diminishing to
10 to 15 knots. showers likely with a chance of thunderstorms.
waves 3 to 5 feet subsiding to 1 to 2 feet. 
.wednesday...southwest winds 5 to 15 knots becoming south.
showers likely with a chance of thunderstorms. waves 1 to 2 feet.
.thursday...south winds 10 to 15 knots becoming southwest 15 to
20 knots. showers likely. waves 1 to 3 feet. 
.friday...west winds 5 to 15 knots becoming southeast. waves 1 to
3 feet subsiding to 1 foot or less. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kbuf 131410
glflo 
expires:202604132100;;299911

open lake forecast for lake ontario
national weather service buffalo ny
1010 am edt mon apr 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 29.3 inch low will move across northern quebec today, 
with a trailing weak trough crossing the lake. a 29.6 inch low will 
then move into the central great lakes tuesday morning before 
weakening across the saint lawrence valley tuesday night. another 
29.6 inch low will move into the central great lakes wednesday night 
before reaching southern quebec thursday night. a 30.0 inch high is 
then forecast to build from the central great lakes friday to the 
lower great lakes saturday.


loz063>065-132100-
lake ontario open waters from hamlin beach to the saint lawrence
river-
1010 am edt mon apr 13 2026

.rest of today...southwest winds 15 to 20 knots. showers. waves
2 to 4 feet building to 3 to 5 feet. 
.tonight...west winds 15 to 20 knots becoming south and
diminishing to less than 10 knots after midnight. waves 2 to
4 feet subsiding to 1 to 3 feet. 
.tuesday...southeast winds 5 to 15 knots becoming southwest.
showers in the morning, then showers with a chance of
thunderstorms in the afternoon. waves 1 to 3 feet. 
.tuesday night...southwest winds 15 to 20 knots diminishing to
5 to 15 knots. showers with a chance of thunderstorms. waves 1 to
3 feet. 
.wednesday...southwest winds 5 to 10 knots becoming south.
showers likely with a chance of thunderstorms during the day,
then showers likely wednesday night. waves 2 feet or less. 
.thursday...south winds 5 to 15 knots becoming southwest 15 to
20 knots. showers likely. waves 1 to 3 feet. 
.friday...west winds 15 to 20 knots becoming south and
diminishing to 10 knots or less. a chance of showers during the
day. waves 1 to 3 feet subsiding to 1 foot or less. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 131400
glfle 
expires:202604132000;;299214

open lake forecast for lake erie
national weather service cleveland oh
1000 am edt mon apr 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...
a stalled frontal boundary lingers across the central great 
lakes through midweek. several waves of low pressure will track 
along this boundary including low pressure of 29.50 inches on 
thursday. a ridge averaging 30.00 inches will be over the lake on 
friday.


lez061-166>169-132000-
ripley to buffalo ny extending from 5nm off shoreline to us-
canadian border-
avon point to willowick oh beyond 5 nm off shoreline to us-
canadian border-willowick to geneva-on-the-
lake oh beyond 5nm off shoreline to us-canadian border-geneva-on-
the-lake to conneaut oh beyond 5 nm off shoreline to us-
canadian border-
conneaut oh to ripley ny beyond 5 nm off shoreline to us-
canadian border-
1000 am edt mon apr 13 2026

.rest of today...southwest winds 15 to 25 knots. a slight chance
of showers late this morning. waves 4 to 7 feet subsiding to 3 to
6 feet. waves occasionally around 9 feet. 
.tonight...southwest winds 5 to 15 knots becoming south. a chance
of showers with a slight chance of thunderstorms. showers likely
with a chance of thunderstorms late. waves 2 to 4 feet subsiding
to 1 to 3 feet. 
.tuesday...south winds 15 to 20 knots becoming southwest 10 to
15 knots. showers likely with a chance of thunderstorms. waves
1 to 3 feet building to 2 to 4 feet. 
.tuesday night...southwest winds 10 to 15 knots. showers likely
with a chance of thunderstorms. waves 2 to 4 feet subsiding to
1 to 3 feet. 
.wednesday...southwest winds 5 to 15 knots becoming south.
showers during the day, then showers with a chance of
thunderstorms wednesday night. waves 1 to 3 feet building to 2 to
4 feet. 
.thursday...southwest winds 15 to 20 knots diminishing to 10 to
15 knots. showers likely during the day, then a chance of showers
thursday night. waves 2 to 4 feet subsiding to 1 to 3 feet. 
.friday...west 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 131400
glfle 
expires:202604132000;;299213

open lake forecast for lake erie
national weather service cleveland oh
1000 am edt mon apr 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...
a stalled frontal boundary lingers across the central great 
lakes through midweek. several waves of low pressure will track 
along this boundary including low pressure of 29.50 inches on 
thursday. a ridge averaging 30.00 inches will be over the lake on 
friday.


lez162>165-132000-
detroit river lt. to maumee bay oh to reno beach oh beyond 5nm
offshoreline to us-canadian border-
reno beach to the islands oh beyond 5nm off shoreline to us-
canadian border-
the islands to vermilion oh beyond 5 nm off shoreline to us-
canadian border-
vermilion to avon point oh beyond 5 nm off shoreline to us-
canadian border-
1000 am edt mon apr 13 2026

.rest of today...southwest winds 15 to 20 knots diminishing to
10 to 15 knots. a slight chance of showers late this morning. a
slight chance of showers and thunderstorms late. waves 3 to
5 feet subsiding to 1 to 3 feet. 
.tonight...southwest winds 10 to 15 knots becoming south 15 to
20 knots. a slight chance of showers and thunderstorms early,
then a chance of showers with a slight chance of thunderstorms
late in the evening. a chance of showers and thunderstorms after
midnight. waves 1 to 3 feet. 
.tuesday...southwest winds 15 to 20 knots. a chance of showers in
the morning, then showers likely with a chance of thunderstorms
in the afternoon. waves 1 to 3 feet building to 2 to 4 feet. 
.tuesday night...southwest winds 10 to 15 knots. showers likely
with a chance of thunderstorms. waves 1 to 3 feet. 
.wednesday...southwest winds 10 to 15 knots becoming south.
showers with a chance of thunderstorms. waves 1 to 3 feet
building to 2 to 4 feet. 
.thursday...southwest winds 15 to 20 knots becoming west 10 to
15 knots. showers likely with a chance of thunderstorms during
the day, then a chance of showers thursday night. waves 2 to
4 feet subsiding to 1 to 3 feet. 
.friday...west winds 5 to 15 knots becoming south 15 to 20 knots.
a chance of showers friday night. waves 1 to 3 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus63 kdtx 131349
glfsc 
expires:202604132200;;298844

lake st clair forecast
national weather service detroit/pontiac mi
949 am edt mon apr 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...a warm front stalls across the northern great lakes
through much of the week. multiple passing disturbances bring
rounds of showers, thunderstorms, and gusty winds through friday.


lcz460-132200-
lake st clair-
949 am edt mon apr 13 2026

...small craft advisory in effect until noon edt today...

.rest of today...southwest winds 15 to 20 knots becoming west 10 to
15 knots late in the afternoon. gusts to 25 knots this morning. 
partly sunny. waves 1 to 3 feet.
.tonight...southwest winds 5 to 10 knots backing to the south late
in the evening...then increasing to 10 to 15 knots after midnight.
partly cloudy in the evening...then mostly cloudy with light showers
likely and a chance of thunderstorms after midnight. mostly cloudy
with a chance of showers and thunderstorms early in the morning.
waves 2 feet or less.
.tuesday...southwest winds 15 to 20 knots. mostly cloudy with light
showers likely and a chance of thunderstorms. waves 1 to 3 feet.
.tuesday night...southwest winds 10 to 15 knots. light showers and a
chance of thunderstorms. waves 1 to 3 feet.
.wednesday...southwest winds 10 to 15 knots. light showers in the
morning...then showers and a chance of thunderstorms in the
afternoon and evening. waves 2 feet or less.
.thursday...southwest winds 15 to 20 knots. light showers and a
chance of thunderstorms. waves 1 to 3 feet.
.friday...southeast winds 10 to 15 knots. partly cloudy. waves 2
feet or less.

$$

fzus63 kdtx 131349
glflh 
expires:202604132200;;298860

open lake forecast for lake huron
national weather service detroit/pontiac mi
949 am edt mon apr 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...a warm front stalls across the northern great lakes
through much of the week. multiple passing disturbances bring
rounds of showers, thunderstorms, and gusty winds through friday.


lhz361-362-132200-
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-
949 am edt mon apr 13 2026

.rest of today...west winds 15 to 20 knots decreasing to 10 to
15 knots late in the afternoon. patchy fog. waves 4 to 6 feet. 
.tonight...north winds 5 to 10 knots veering to the east after
midnight...then increasing to 10 to 15 knots early in the
morning. showers and a chance of thunderstorms after midnight.
patchy fog after midnight. locally heavy rainfall possible after
midnight. waves 3 to 5 feet subsiding to 1 to 3 feet in the late
evening and overnight. waves occasionally around 8 feet. 
.tuesday...east winds 10 to 15 knots. a chance of showers. patchy
fog. waves 3 to 5 feet. 
.tuesday night...north winds 5 to 10 knots veering to the
northeast in the late evening and overnight. a chance of showers
in the evening...then a chance of showers and thunderstorms after
midnight. waves 2 to 4 feet subsiding to 1 to 3 feet in the late
evening and overnight. 
.wednesday...north winds 5 to 10 knots veering to the east late
in the evening. a chance of showers. waves 1 to 3 feet. 
.thursday...east winds 10 to 15 knots backing to the northwest by
midnight. showers likely early in the morning. a chance of
thunderstorms until early evening. waves 1 to 3 feet building to
2 to 4 feet. 
.friday...north winds 10 to 15 knots veering to the east early in
the evening...then becoming southeast 15 to 20 knots by midnight.
waves 2 to 4 feet building to 4 to 6 feet. waves occasionally
around 8 feet. 


$$

fzus63 kdtx 131349
glflh 
expires:202604132200;;298861

open lake forecast for lake huron
national weather service detroit/pontiac mi
949 am edt mon apr 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...a warm front stalls across the northern great lakes
through much of the week. multiple passing disturbances bring
rounds of showers, thunderstorms, and gusty winds through friday.


lhz363-462>464-132200-
lake huron from sturgeon point to alabaster mi beyond 5nm off
shore-
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-
949 am edt mon apr 13 2026

.rest of today...southwest winds 15 to 20 knots becoming west
10 to 15 knots in the afternoon. patchy fog. waves 4 to 6 feet.
waves occasionally around 8 feet. 
.tonight...north winds 5 to 10 knots veering to the northeast
late in the evening...then veering to the east after midnight
increasing to 10 to 15 knots early in the morning. patchy fog.
showers and a chance of thunderstorms after midnight. waves 2 to
4 feet subsiding to 1 to 3 feet in the late evening and
overnight. 
.tuesday...south winds 15 to 20 knots becoming southwest 10 to
15 knots early in the afternoon. a chance of showers. patchy
dense fog. waves 3 to 5 feet. 
.tuesday night...north winds 10 to 15 knots becoming northeast
5 to 10 knots by midnight...then veering to the southeast after
midnight. showers likely and a chance of thunderstorms. waves
2 to 4 feet subsiding to 1 to 3 feet in the late evening and
overnight. 
.wednesday...north winds 5 to 10 knots becoming east 10 to
15 knots late in the evening. a chance of thunderstorms in the
morning. a chance of showers. showers likely late in the
afternoon. waves 1 to 3 feet. 
.thursday...southeast winds 10 to 15 knots veering to the
southwest . showers likely. waves 2 to 4 feet. 
.friday...northwest winds 10 to 15 knots becoming north 5 to
10 knots until early evening...then becoming southeast 10 to
15 knots by midnight. a chance of. 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 131419
glflm 
expires:202604132115;;300213

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
919 am cdt mon apr 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...

a broad area of low pressure around 29.4 inches will become 
deeper over southern hudson bay this morning. this will bring 
continued breezy south winds to all of lake michigan. winds will 
weaken later this morning as the aforementioned area of low 
pressure quickly moves away and the trailing cold front stalls 
over central lake michigan. then, a couple passing low pressure 
system along the stalled front will lead to intermittent showers 
and thunderstorms through the middle of the week. areas of dense 
fog will likely occur at times due to a relatively mild and humid 
airmass over the cold waters. will be monitoring observational 
trends and issuing dense fog advisories should conditions warrant.


lmz261-362-364-366-563-565-567-868-132115-
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-
919 am cdt mon apr 13 2026

sheboygan wi to pentwater mi north...

...dense fog advisory in effect until 7 am cdt tuesday...

.rest of today...northwest winds 10 to 20 kt veering to east
10 to 15 kt. patchy dense fog. waves 4 to 6 ft occasionally to
8 ft subsiding to 2 to 4 ft. 
.tonight...east winds 10 to 15 kt becoming southeast 10 to 20 kt.
patchy dense fog in the evening. rain showers with a chance of
thunderstorms. waves 2 to 4 ft building to 3 to 5 ft. 
.tuesday...southwest winds 10 to 20 kt becoming south 10 to
15 kt. waves 4 to 6 ft occasionally to 8 ft subsiding to 3 to
5 ft. 
.tuesday night...northeast winds 10 to 15 kt becoming north 5 to
10 kt. chance of rain showers and thunderstorms in the evening,
then chance of rain showers overnight. waves 2 to 4 ft. 
.wednesday...north winds 5 to 10 kt becoming northeast 10 to
15 kt. chance of rain showers. waves 1 to 3 ft. 
.wednesday night...northeast winds 10 to 15 kt becoming east.
rain showers likely. waves 1 to 3 ft building to 2 to 4 ft. 
.thursday...southeast winds 10 to 20 kt veering to west. chance
of rain showers. waves 3 to 5 ft. 
.friday...southeast winds 10 to 20 kt. waves 2 to 4 ft building
to 3 to 5 ft.  

$$

fzus63 kmkx 131419
glflm 
expires:202604132115;;300214

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
919 am cdt mon apr 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...

a broad area of low pressure around 29.4 inches will become 
deeper over southern hudson bay this morning. this will bring 
continued breezy south winds to all of lake michigan. winds will 
weaken later this morning as the aforementioned area of low 
pressure quickly moves away and the trailing cold front stalls 
over central lake michigan. then, a couple passing low pressure 
system along the stalled front will lead to intermittent showers 
and thunderstorms through the middle of the week. areas of dense 
fog will likely occur at times due to a relatively mild and humid 
airmass over the cold waters. will be monitoring observational 
trends and issuing dense fog advisories should conditions warrant.


lmz080-669-671-673-675-777-779-870-872-874-876-878-132115-
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-
919 am cdt mon apr 13 2026

sheboygan wi to pentwater mi south...

.rest of today...southwest winds 10 to 20 kt becoming south.
patchy dense fog. chance of rain showers and thunderstorms this
afternoon. waves 4 to 6 ft occasionally to 8 ft subsiding to 2 to
4 ft. 
.tonight...south winds 10 to 20 kt increasing to 15 to 25 kt late
in the evening, then increasing to 30 kt after midnight becoming
southwest late. patchy dense fog in the evening. chance of rain
showers and thunderstorms. waves 1 to 3 ft building to 4 to 6 ft
occasionally to 8 ft. 
.tuesday...southwest winds 15 to 25 kt becoming south 10 to
20 kt. chance of rain showers and thunderstorms in the afternoon.
waves 4 to 6 ft occasionally to 8 ft subsiding to 3 to 5 ft. 
.tuesday night...southwest winds 10 to 20 kt becoming west. rain
showers with a chance of thunderstorms. waves 2 to 4 ft. 
.wednesday...west winds 10 to 15 kt backing to southeast 10 to
20 kt. chance of rain showers in the morning, then rain showers
with a chance of thunderstorms in the afternoon. waves 2 to 4 ft.
.wednesday night...south winds 10 to 20 kt. rain showers with a
chance of thunderstorms. waves 1 to 3 ft building to 3 to 5 ft. 
.thursday...southwest winds 10 to 20 kt. chance of rain showers.
waves 3 to 5 ft. 
.friday...southeast winds 10 to 20 kt. waves 2 to 4 ft building
to 3 to 5 ft.  

$$

fzus63 kmqt 131401
glfls 
expires:202604132000;;299241

open lake forecast for lake superior
national weather service marquette mi
1000 am edt mon apr 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...

a 29.5 inch low taking shape over the central plains today lifts 
through the straits of mackinac at 29.6 inches tuesday morning. 
following this, weak ridging of around 29.9 inches moves back over 
lake superior from northern ontario tuesday evening through 
wednesday before another low from the central plains lifts through 
lower michigan at 29.7 inches on thursday. behind this low, yet 
another low at around 29.5 inches moves into lake superior on friday 
into saturday.



lsz265-132000-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
1000 am edt mon apr 13 2026

...dense fog advisory in effect until 11 am edt this morning...

.rest of today...west winds 10 to 20 knots becoming northwest
5 to 15 knots in the afternoon, then becoming east 10 to 20 knots
late. patchy fog by late morning. waves 1 to 3 feet subsiding to
calm to 2 feet. 
.tonight...east winds 10 to 20 knots. a chance of rain showers
through midnight. a slight chance of thunderstorms. rain showers
likely after midnight. waves building to 1 to 3 feet. 
.tuesday...northeast winds 10 to 20 knots veering east in the
afternoon, then backing northeast late. a slight chance of rain
showers through early afternoon. waves subsiding to calm to
2 feet. 
.tuesday night...northwest winds 10 to 20 knots diminishing to
5 to 15 knots after midnight. a slight chance of rain showers
through midnight. waves calm to 2 feet. 
.wednesday...north winds 5 to 15 knots veering east by mid
afternoon. a slight chance of rain showers by mid afternoon.
waves calm to 2 feet. 
.wednesday night...east winds 10 to 20 knots. a chance of rain
showers. waves calm to 2 feet. 
.thursday...north winds 10 to 20 knots becoming southeast 15 to
25 knots. a chance of rain showers. waves building to 3 to 5 feet
occasionally to 7 feet. 
.friday...southeast winds 20 to 30 knots becoming south gales to
35 knots. a chance of rain showers, then rain showers. waves
building to 6 to 9 feet occasionally to 11 feet. 

$$

fzus63 kmqt 131401
glfls 
expires:202604132000;;299240

open lake forecast for lake superior
national weather service marquette mi
1000 am edt mon apr 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...

a 29.5 inch low taking shape over the central plains today lifts 
through the straits of mackinac at 29.6 inches tuesday morning. 
following this, weak ridging of around 29.9 inches moves back over 
lake superior from northern ontario tuesday evening through 
wednesday before another low from the central plains lifts through 
lower michigan at 29.7 inches on thursday. behind this low, yet 
another low at around 29.5 inches moves into lake superior on friday 
into saturday.



lsz264-132000-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
1000 am edt mon apr 13 2026

...dense fog advisory in effect until 11 am edt this morning...

.rest of today...northwest winds 5 to 15 knots veering east late.
patchy fog by late morning. waves 1 to 3 feet subsiding to calm
to 2 feet. 
.tonight...east winds 5 to 15 knots becoming northeast 10 to
20 knots late. a chance of rain showers, possibly mixed with snow
through midnight, then rain showers likely after midnight. waves
building to 1 to 3 feet. 
.tuesday...northeast winds 10 to 20 knots diminishing to 5 to
15 knots in the afternoon. a slight chance of rain showers. waves
1 to 3 feet. 
.tuesday night...north winds 5 to 15 knots diminishing to less
than 10 knots after midnight. waves subsiding to calm to 2 feet. 
.wednesday...northeast winds less than 10 knots becoming east
5 to 15 knots by mid afternoon. waves calm to 2 feet. 
.wednesday night...east winds 5 to 15 knots. a chance of rain
showers. waves calm to 2 feet. 
.thursday...northeast winds 5 to 15 knots becoming east 15 to
25 knots. waves building to 3 to 5 feet occasionally to 7 feet. 
.friday...southeast winds 15 to 25 knots becoming south gales to
35 knots. a chance of rain showers, then rain showers, possibly
mixed with snow. waves building to 8 to 11 feet occasionally to
14 feet. 

$$

fzus63 kmqt 131401
glfls 
expires:202604132000;;299239

open lake forecast for lake superior
national weather service marquette mi
1000 am edt mon apr 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...

a 29.5 inch low taking shape over the central plains today lifts 
through the straits of mackinac at 29.6 inches tuesday morning. 
following this, weak ridging of around 29.9 inches moves back over 
lake superior from northern ontario tuesday evening through 
wednesday before another low from the central plains lifts through 
lower michigan at 29.7 inches on thursday. behind this low, yet 
another low at around 29.5 inches moves into lake superior on friday 
into saturday.



lsz263-132000-
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-
1000 am edt mon apr 13 2026

...dense fog advisory in effect until 11 am edt this morning...

.rest of today...west winds 5 to 15 knots becoming northwest less
than 10 knots in the afternoon, then becoming east 5 to 15 knots
late. patchy fog by late morning. waves calm to 2 feet. 
.tonight...east winds 10 to 20 knots backing northeast late. a
slight chance of thunderstorms through midnight. a chance of rain
showers. waves building to 2 to 4 feet. 
.tuesday...northeast winds 10 to 20 knots diminishing to 5 to
15 knots in the afternoon. a slight chance of rain showers. waves
subsiding to 1 to 3 feet. 
.tuesday night...northeast winds 5 to 15 knots becoming north
less than 10 knots after midnight. waves subsiding to calm to
2 feet. 
.wednesday...northeast winds less than 10 knots increasing to
5 to 15 knots by mid afternoon. a slight chance of rain showers
by mid afternoon. waves calm to 2 feet. 
.wednesday night...east winds 5 to 15 knots backing northeast
after midnight. a chance of rain showers. waves calm to 2 feet. 
.thursday...northeast winds 5 to 15 knots becoming east 10 to
20 knots. a chance of rain showers. waves building to 3 to 5 feet
occasionally to 7 feet. 
.friday...east winds 15 to 25 knots becoming west 20 to 30 knots.
a chance of rain showers, then rain showers likely, possibly
mixed with snow showers. waves building to 8 to 11 feet
occasionally to 14 feet. 

$$

fzus63 kmqt 131401
glfls 
expires:202604132000;;299242

open lake forecast for lake superior
national weather service marquette mi
1000 am edt mon apr 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...

a 29.5 inch low taking shape over the central plains today lifts 
through the straits of mackinac at 29.6 inches tuesday morning. 
following this, weak ridging of around 29.9 inches moves back over 
lake superior from northern ontario tuesday evening through 
wednesday before another low from the central plains lifts through 
lower michigan at 29.7 inches on thursday. behind this low, yet 
another low at around 29.5 inches moves into lake superior on friday 
into saturday.



lsz266-132000-
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-
1000 am edt mon apr 13 2026

...dense fog advisory in effect until 11 am edt this morning...

.rest of today...northwest winds 10 to 20 knots becoming north
5 to 15 knots late. patchy fog by late morning. waves 3 to 5 feet
occasionally to 7 feet subsiding to calm to 2 feet. 
.tonight...east winds 5 to 15 knots increasing to 10 to 20 knots
after midnight. a chance of rain showers through midnight. a
slight chance of thunderstorms. rain showers likely after
midnight. waves building to 1 to 3 feet. 
.tuesday...northeast winds 10 to 20 knots veering east in the
afternoon, then backing northeast late. a slight chance of rain
showers through early afternoon. waves subsiding to calm to
2 feet. 
.tuesday night...north winds 10 to 20 knots backing northwest
after midnight. a slight chance of rain showers. waves calm to
2 feet. 
.wednesday...north winds 5 to 15 knots veering northeast by mid
afternoon. a slight chance of rain showers by mid afternoon.
waves calm to 2 feet. 
.wednesday night...east winds 5 to 15 knots increasing to 10 to
20 knots after midnight. a chance of rain showers. waves calm to
2 feet. 
.thursday...north winds 10 to 20 knots increasing to 15 to
25 knots. a chance of rain showers. waves building to 3 to 5 feet
occasionally to 7 feet. 
.friday...southeast winds 20 to 30 knots becoming south gales to
40 knots. rain showers. waves building to 9 to 12 feet
occasionally to 15 feet. 

$$

fzus63 kmqt 131401
glfls 
expires:202604132000;;299238

open lake forecast for lake superior
national weather service marquette mi
1000 am edt mon apr 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...

a 29.5 inch low taking shape over the central plains today lifts 
through the straits of mackinac at 29.6 inches tuesday morning. 
following this, weak ridging of around 29.9 inches moves back over 
lake superior from northern ontario tuesday evening through 
wednesday before another low from the central plains lifts through 
lower michigan at 29.7 inches on thursday. behind this low, yet 
another low at around 29.5 inches moves into lake superior on friday 
into saturday.



lsz162-132000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1000 am edt mon apr 13 2026 /900 am cdt mon apr 13 2026/

...dense fog advisory in effect until 11 am edt /10 am cdt/ this
morning...

.rest of today...west winds 5 to 15 knots veering north in the
afternoon, then veering east late. a slight chance of showers and
thunderstorms by mid afternoon. waves calm to 2 feet. 
.tonight...northeast winds 10 to 20 knots increasing to 15 to
25 knots after midnight, then diminishing to 10 to 20 knots late.
a slight chance of thunderstorms through midnight. a chance of
rain showers. waves building to 3 to 5 feet occasionally to
7 feet. 
.tuesday...northeast winds 10 to 20 knots diminishing to 5 to
15 knots late. a chance of rain showers. a slight chance of snow
showers by mid afternoon. waves subsiding to 1 to 3 feet. 
.tuesday night...northeast winds 5 to 15 knots. waves subsiding
to calm to 2 feet. 
.wednesday...northeast winds 5 to 15 knots. a slight chance of
rain showers by mid afternoon. waves calm to 2 feet. 
.wednesday night...northeast winds 5 to 15 knots. a chance of
rain showers. waves calm to 2 feet. 
.thursday...northeast winds 5 to 15 knots becoming east 10 to
20 knots. a chance of rain showers. waves building to 3 to 5 feet
occasionally to 7 feet. 
.friday...northeast winds 10 to 20 knots becoming northwest 20 to
30 knots. rain showers likely, possibly mixed with snow showers.
waves building to 4 to 7 feet occasionally to 9 feet, then
subsiding to 3 to 6 feet occasionally to 8 feet. 

$$

fzus63 kmqt 131401
glfls 
expires:202604132000;;299243

open lake forecast for lake superior
national weather service marquette mi
1000 am edt mon apr 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...

a 29.5 inch low taking shape over the central plains today lifts 
through the straits of mackinac at 29.6 inches tuesday morning. 
following this, weak ridging of around 29.9 inches moves back over 
lake superior from northern ontario tuesday evening through 
wednesday before another low from the central plains lifts through 
lower michigan at 29.7 inches on thursday. behind this low, yet 
another low at around 29.5 inches moves into lake superior on friday 
into saturday.



lsz267-132000-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
1000 am edt mon apr 13 2026

...dense fog advisory in effect until 11 am edt this morning...

.rest of today...northwest winds 10 to 20 knots diminishing to
5 to 15 knots late. patchy fog by late morning. waves 3 to 5 feet
occasionally to 7 feet subsiding to 1 to 3 feet. 
.tonight...east winds 5 to 15 knots increasing to 10 to 20 knots
after midnight. a chance of rain showers through midnight, then
rain showers likely and a slight chance of thunderstorms after
midnight. waves subsiding to calm to 2 feet, then building to
1 to 3 feet. 
.tuesday...northeast winds 10 to 20 knots veering east in the
afternoon. a chance of rain showers through early afternoon.
waves subsiding to calm to 2 feet. 
.tuesday night...north winds 5 to 15 knots. a slight chance of
rain showers. waves calm to 2 feet. 
.wednesday...north winds 5 to 15 knots. a slight chance of rain
showers by mid afternoon. waves calm to 2 feet. 
.wednesday night...east winds 5 to 15 knots increasing to 10 to
20 knots after midnight. a chance of rain showers. waves calm to
2 feet. 
.thursday...north winds 10 to 20 knots. a chance of rain showers.
waves building to 2 to 4 feet. 
.friday...southeast winds 15 to 25 knots increasing to gales to
35 knots. rain showers likely. waves building to 7 to 10 feet
occasionally to 13 feet. 

$$