fzus61 kbuf 010115
glflo 
expires:202604010900;;620043

open lake forecast for lake ontario
national weather service buffalo ny
914 pm edt tue mar 31 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 frontal zone will stall near the south shore of the 
lake today. a 29.6 inch low will move across southern ontario 
province this evening before reaching the canadian maritimes 
wednesday, with a trailing cold front moving south across the lake 
tonight. a 30.6 inch high will then build east across ontario and 
quebec wednesday through thursday. a 29.6 inch low is then forecast 
to move into the central great lakes thursday night before reaching 
southern quebec late friday.


loz063>065-010900-
lake ontario open waters from hamlin beach to the saint lawrence
river-
914 pm edt tue mar 31 2026

.rest of tonight...southwest winds 5 to 15 knots becoming
northwest. patchy fog late this evening. rain showers with a
chance of thunderstorms late this evening, then rain showers
likely with a chance of thunderstorms after midnight. a chance of
rain showers late. some thunderstorms may produce gusty winds.
waves 2 feet or less. 
.wednesday...northwest winds 5 to 15 knots becoming north. waves
2 feet or less. 
.wednesday night...northeast winds 5 to 15 knots increasing to
15 to 20 knots. a chance of rain showers overnight. waves 1 to
3 feet building to 2 to 4 feet. 
.thursday...northeast winds 15 to 20 knots becoming east. rain
showers likely. waves 3 to 5 feet. 
.thursday night...east winds 15 to 25 knots becoming south to
30 knots. showers likely. waves 3 to 5 feet building to 5 to
8 feet. waves occasionally around 10 feet. 
.friday...south winds to 30 knots becoming northwest and
diminishing to 10 to 15 knots. rain showers likely during the
day, then a chance of rain showers friday night. waves 4 to
7 feet subsiding to 2 to 4 feet. waves occasionally around
9 feet. 
.saturday...northeast winds 10 to 15 knots becoming southwest and
increasing to 15 to 25 knots. a chance of rain showers during the
day, then rain showers saturday night. waves 1 to 3 feet building
to 3 to 6 feet. 
.sunday...southwest winds to 30 knots becoming northwest. rain
showers during the day, then a chance of rain showers sunday
night. waves 5 to 8 feet building to 7 to 10 feet. waves
occasionally around 13 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kbuf 010115
glflo 
expires:202604010900;;620042

open lake forecast for lake ontario
national weather service buffalo ny
914 pm edt tue mar 31 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 frontal zone will stall near the south shore of the 
lake today. a 29.6 inch low will move across southern ontario 
province this evening before reaching the canadian maritimes 
wednesday, with a trailing cold front moving south across the lake 
tonight. a 30.6 inch high will then build east across ontario and 
quebec wednesday through thursday. a 29.6 inch low is then forecast 
to move into the central great lakes thursday night before reaching 
southern quebec late friday.


loz062-010900-
lake ontario open waters from the niagara river to hamlin beach-
914 pm edt tue mar 31 2026

.rest of tonight...southwest winds 10 to 15 knots becoming
northwest. patchy fog late this evening. rain showers with a
chance of thunderstorms late this evening, then a chance of rain
showers after midnight. some thunderstorms may produce gusty
winds late this evening. waves 1 to 2 feet. 
.wednesday...northwest winds 5 to 10 knots becoming northeast.
waves 2 feet or less. 
.wednesday night...east winds 5 to 15 knots increasing to 15 to
20 knots. a chance of rain showers overnight. waves 2 feet or
less building to 3 to 5 feet. 
.thursday...east winds 15 to 25 knots. rain showers likely. waves
4 to 7 feet. waves occasionally around 9 feet. 
.thursday night...east winds 15 to 20 knots becoming south. rain
showers likely. waves 3 to 6 feet. 
.friday...southwest winds 15 to 25 knots becoming north and
diminishing to around 10 knots. showers likely during the day,
then a chance of showers friday night. waves 3 to 6 feet
subsiding to 2 to 4 feet. 
.saturday...east winds 15 to 25 knots becoming southwest.
showers. waves 2 to 4 feet building to 3 to 6 feet. 
.sunday...west winds 20 to 25 knots becoming northwest. rain
showers likely during the day, then a chance of rain showers
sunday night. waves 5 to 8 feet. waves occasionally around
10 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 311934
glfle 
expires:202604010215;;607351

open lake forecast for lake erie
national weather service cleveland oh
334 pm edt tue mar 31 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 29.70 inches will move east through the great lakes 
tonight, extending a cold front south across the area. another low 
pressure system 29.50 inches will move east through the great lakes 
on thursday, lifting the cold front back north as a warm front. a 
cold front will sweep east across lake erie on friday, followed by 
another approaching low pressure system 29.70 inches on saturday.


lez167>169-010215-
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-
334 pm edt tue mar 31 2026

...severe thunderstorm watch 80 in effect until 9 pm edt this
evening...

.tonight...southwest winds 15 to 20 knots becoming northwest
10 to 15 knots. rain with a chance of thunderstorms through the
early overnight, then a chance of rain with a slight chance of
thunderstorms late. waves 3 to 5 feet. 
.wednesday...northwest winds 5 to 15 knots becoming northeast. a
slight chance of rain through early afternoon, then a chance of
rain late. waves 2 to 4 feet subsiding to 1 to 2 feet. 
.wednesday night...northeast winds 10 to 15 knots increasing to
15 to 20 knots. a chance of rain. waves 1 to 3 feet building to
2 to 4 feet. 
.thursday...east winds 15 to 20 knots becoming southeast 10 to
15 knots. a chance of rain. waves 3 to 5 feet subsiding to 1 to
3 feet. 
.thursday night...southeast winds 10 to 15 knots becoming south
15 to 20 knots. a chance of rain in the evening, then rain likely
overnight. waves 1 to 3 feet building to 3 to 5 feet. 
.friday...southwest winds 15 to 20 knots becoming east 5 to
15 knots. a chance of rain. waves 3 to 5 feet subsiding to 1 to
3 feet. 
.saturday...southeast winds 10 to 15 knots becoming southwest
15 to 20 knots. rain likely with a chance of thunderstorms during
the day, then rain likely saturday night. waves 1 to 3 feet
building to 3 to 6 feet. 
.sunday...west winds 15 to 25 knots becoming northwest. a chance
of rain during the day. waves 3 to 6 feet subsiding to 2 to
4 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 311934
glfle 
expires:202604010215;;607352

open lake forecast for lake erie
national weather service cleveland oh
334 pm edt tue mar 31 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 29.70 inches will move east through the great lakes 
tonight, extending a cold front south across the area. another low 
pressure system 29.50 inches will move east through the great lakes 
on thursday, lifting the cold front back north as a warm front. a 
cold front will sweep east across lake erie on friday, followed by 
another approaching low pressure system 29.70 inches on saturday.


lez061-010215-
ripley to buffalo ny extending from 5nm off shoreline to us-
canadian border-
334 pm edt tue mar 31 2026

.tonight...southwest winds 15 to 20 knots becoming west 10 to
15 knots. rain with a chance of thunderstorms through the early
overnight, then a chance of rain with a slight chance of
thunderstorms late. waves 2 to 4 feet. 
.wednesday...north winds 5 to 10 knots becoming northeast. a
slight chance of rain in the morning. waves 1 to 3 feet. 
.wednesday night...northeast winds 10 to 15 knots. a chance of
rain. waves 1 to 3 feet. 
.thursday...northeast winds 10 to 15 knots becoming east. rain
likely. waves 1 to 3 feet. 
.thursday night...southeast winds 10 to 15 knots becoming south
15 to 20 knots. a chance of rain and thunderstorms in the
evening, then rain likely overnight. waves 2 feet or less
building to 2 to 4 feet. 
.friday...southwest winds 15 to 20 knots becoming northeast and
diminishing to 5 to 10 knots. a chance of rain. waves 2 to 4 feet
subsiding to 1 to 2 feet. 
.saturday...east winds 10 to 15 knots becoming southwest 15 to
20 knots. rain likely with a chance of thunderstorms during the
day, then rain likely saturday night. waves 1 to 2 feet building
to 2 to 4 feet. 
.sunday...southwest winds 15 to 20 knots becoming northwest. a
chance of rain during the day. waves 3 to 6 feet subsiding to
2 to 4 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 010102
glfle 
expires:202604010815;;619349

open lake forecast for lake erie
national weather service cleveland oh
902 pm edt tue mar 31 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 29.70 inches will move east through the great lakes 
tonight, extending a cold front south across the area that will
drop southward. another low pressure system 29.50 inches will 
move east through the great lakes on thursday, lifting the cold 
front back north as a warm front. a cold front will sweep east 
across lake erie on friday, followed by another approaching low 
pressure system 29.70 inches on saturday.


lez164>166-010815-
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-
902 pm edt tue mar 31 2026

.overnight...southwest winds 15 to 20 knots becoming north
10 to 15 knots. showers with a chance of thunderstorms, then a
chance of showers with a slight chance of thunderstorms late.
waves 3 to 5 feet subsiding to 2 to 4 feet. 
.wednesday...north winds 10 to 15 knots becoming northeast. a
chance of rain showers with a slight chance of thunderstorms
early, then a chance of rain showers. a chance of rain late.
waves 1 to 3 feet. 
.wednesday night...northeast winds 10 to 15 knots becoming east
15 to 20 knots. a chance of rain in the evening, then rain likely
overnight. waves 1 to 3 feet building to 3 to 5 feet. 
.thursday...east winds 15 to 20 knots becoming south. rain likely
in the morning, then a chance of rain in the afternoon. waves
3 to 5 feet subsiding to 2 to 4 feet. 
.thursday night...south winds 15 to 20 knots becoming southwest.
a chance of rain in the evening, then rain likely overnight.
waves 2 to 4 feet building to 3 to 5 feet. 
.friday...southwest winds 15 to 20 knots becoming southeast 10 to
15 knots. a chance of rain during the day, then rain likely with
a chance of thunderstorms friday night. waves 3 to 5 feet
subsiding to 1 to 3 feet. 
.saturday...southeast winds 15 to 25 knots becoming west. a
chance of rain and thunderstorms during the day, then rain likely
saturday night. waves 1 to 3 feet building to 3 to 6 feet. 
.sunday...west winds 15 to 25 knots becoming northwest. a chance
of rain during the day. waves 3 to 6 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 010102
glfle 
expires:202604010815;;619348

open lake forecast for lake erie
national weather service cleveland oh
902 pm edt tue mar 31 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 29.70 inches will move east through the great lakes 
tonight, extending a cold front south across the area that will
drop southward. another low pressure system 29.50 inches will 
move east through the great lakes on thursday, lifting the cold 
front back north as a warm front. a cold front will sweep east 
across lake erie on friday, followed by another approaching low 
pressure system 29.70 inches on saturday.


lez162-163-010815-
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-
902 pm edt tue mar 31 2026

.overnight...southwest winds 10 to 15 knots becoming north
15 to 20 knots. showers with a chance of thunderstorms, then a
chance of showers with a slight chance of thunderstorms late.
waves 1 to 3 feet. 
.wednesday...northeast winds 10 to 15 knots. a chance of rain
showers through early afternoon, then rain likely late. waves
1 to 3 feet. 
.wednesday night...northeast winds 10 to 15 knots becoming east
15 to 20 knots. a chance of rain in the evening, then rain likely
overnight. waves 1 to 3 feet building to 2 to 4 feet. 
.thursday...east winds 15 to 20 knots becoming south. rain likely
in the morning, then a chance of rain in the afternoon. waves
2 to 4 feet subsiding to 1 to 3 feet. 
.thursday night...south winds 15 to 25 knots becoming southwest.
rain likely. waves 1 to 3 feet building to 2 to 4 feet. 
.friday...southwest winds 15 to 20 knots becoming east 10 to
15 knots. a chance of rain during the day, then rain likely with
a chance of thunderstorms friday night. waves 1 to 3 feet. 
.saturday...southeast winds 15 to 25 knots becoming west. rain
with a chance of thunderstorms during the day, then a chance of
rain saturday night. waves 1 to 3 feet building to 2 to 4 feet. 
.sunday...west winds 15 to 25 knots becoming northwest. waves
2 to 4 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 010102
glfle 
expires:202604010815;;619350

open lake forecast for lake erie
national weather service cleveland oh
902 pm edt tue mar 31 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 29.70 inches will move east through the great lakes 
tonight, extending a cold front south across the area that will
drop southward. another low pressure system 29.50 inches will 
move east through the great lakes on thursday, lifting the cold 
front back north as a warm front. a cold front will sweep east 
across lake erie on friday, followed by another approaching low 
pressure system 29.70 inches on saturday.


lez061-167>169-010815-
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-
902 pm edt tue mar 31 2026

.overnight...southwest winds 10 to 15 knots becoming
northwest. rain showers with a chance of thunderstorms, then a
chance of rain showers with a slight chance of thunderstorms
late. waves 3 to 5 feet. 
.wednesday...northwest winds 5 to 15 knots becoming northeast. a
chance of rain showers in the morning, then a slight chance of
rain showers early in the afternoon. a chance of rain late. waves
2 to 4 feet subsiding to 1 to 2 feet. 
.wednesday night...northeast winds 10 to 15 knots increasing to
15 to 20 knots. a chance of rain. waves 1 to 3 feet building to
2 to 4 feet. 
.thursday...northeast winds 15 to 20 knots becoming southeast
10 to 15 knots. a chance of rain. waves 3 to 5 feet subsiding to
1 to 3 feet. 
.thursday night...southeast winds 10 to 15 knots becoming south
15 to 20 knots. a chance of rain in the evening, then rain likely
overnight. waves 1 to 3 feet building to 3 to 5 feet. 
.friday...southwest winds 15 to 20 knots becoming east 5 to
15 knots. a chance of rain. waves 3 to 5 feet subsiding to 1 to
3 feet. 
.saturday...east winds 10 to 15 knots becoming southwest 15 to
20 knots. rain likely with a chance of thunderstorms during the
day, then rain likely saturday night. waves 1 to 3 feet building
to 3 to 6 feet. 
.sunday...west winds 15 to 25 knots becoming northwest. a chance
of rain during the day. waves 3 to 6 feet subsiding to 2 to
4 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus63 kdtx 010157
glfsc 
expires:202604011000;;620831

lake st clair forecast
national weather service detroit/pontiac mi
957 pm edt tue mar 31 2026

waves are the significant wave height - the average of the highest
1/3 of the wave spectrum. occasional wave height is the average of
the highest 1/10 of the wave spectrum.

.synopsis...high pressure moves across ontario through the
afternoon which will reinforce northeast flow today. low
pressure, 29.40 inches, will lift from the central plains in the
western great lakes tomorrow, bringing another round of
precipitation to the region. this low will lift northeast of the
great lakes friday.


lcz460-011000-
lake st clair-
957 pm edt tue mar 31 2026

.rest of tonight...west winds 10 to 15 knots becoming north 15 to 20
knots after midnight. mostly cloudy. showers likely and scattered
thunderstorms this evening...then a chance of light showers after
midnight. waves 2 feet or less.
.wednesday...north winds 10 to 15 knots. mostly cloudy. waves 1 to 3
feet.
.wednesday night...northeast winds 10 to 15 knots veering to the
east after midnight. partly cloudy early in the evening becoming
mostly cloudy. light showers likely after midnight. waves 2 feet or
less.
.thursday...southeast winds 10 to 15 knots veering to the south
early in the afternoon. mostly cloudy. light showers likely early in
the morning...then a chance of light showers in the late morning and
afternoon. waves 1 to 3 feet.
.thursday night...south winds 15 to 20 knots increasing to 20 to 25
knots with gusts to 30 knots in the late evening and overnight.
light showers ...then light showers likely after midnight. waves 1
to 3 feet building to 2 to 4 feet in the late evening and overnight.
a small craft advisory may be needed.
.friday...southwest winds 15 to 20 knots diminishing to 10 to 15
knots in the afternoon...then veering to the northwest in the
evening. partly sunny in the morning...then mostly clear with a
chance of light showers in the afternoon and evening. waves 1 to 3
feet.
.saturday...southwest winds 15 to 20 knots. light rain. waves 1 to 3
feet.
.sunday...northwest winds 20 to 25 knots. mostly cloudy. a chance of
light rain. waves 2 to 4 feet.

$$

fzus63 kdtx 010156
glflh 
expires:202604011000;;620810

open lake forecast for lake huron
national weather service detroit/pontiac mi
956 pm edt tue mar 31 2026

for waters beyond five nautical miles off shore on lake huron

waves are the significant wave height - the average of the highest
1/3 of the wave spectrum. occasional wave height is the average of
the highest 1/10 of the wave spectrum.

.synopsis...high pressure moves across ontario through the
afternoon which will reinforce northeast flow today. low
pressure, 29.40 inches, will lift from the central plains in the
western great lakes tomorrow, bringing another round of
precipitation to the region. this low will lift northeast of the
great lakes friday.


lhz462>464-011000-
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-
956 pm edt tue mar 31 2026

.rest of tonight...north winds 15 to 20 knots. waves 3 to 5 feet.
.wednesday...north winds 15 to 20 knots. waves 3 to 5 feet. 
.wednesday night...northeast winds 15 to 20 knots becoming east
10 to 15 knots after midnight. a chance of rain and snow showers
after midnight. waves 4 to 6 feet. 
.thursday...east winds 10 to 15 knots. a chance of showers. waves
4 to 6 feet. waves occasionally around 8 feet. 
.thursday night...southeast winds 15 to 20 knots becoming south
20 to 25 knots with gusts to around 30 knots in the late evening
and overnight. showers in the evening...then a chance of showers
after midnight. waves 6 to 9 feet. waves occasionally around
12 feet. 
.friday...southwest winds 15 to 20 knots becoming west 10 to
15 knots late in the morning...then veering to the north late in
the evening. a chance of showers...then a chance of rain late in
the evening. waves 4 to 6 feet subsiding to 2 to 4 feet late in
the afternoon. waves occasionally around 8 feet. 
.saturday...east winds 15 to 20 knots veering to the southwest by
midnight. a chance of rain early in the morning. rain until early
evening...then a chance of rain by midnight. waves 5 to 7 feet.
waves occasionally around 10 feet. 
.sunday...west winds 20 to 25 knots veering to the northwest by
midnight. a chance of rain and snow early in the morning. waves
6 to 9 feet. waves occasionally around 12 feet. 


$$

fzus63 kdtx 010156
glflh 
expires:202604011000;;620808

open lake forecast for lake huron
national weather service detroit/pontiac mi
956 pm edt tue mar 31 2026

for waters beyond five nautical miles off shore on lake huron

waves are the significant wave height - the average of the highest
1/3 of the wave spectrum. occasional wave height is the average of
the highest 1/10 of the wave spectrum.

.synopsis...high pressure moves across ontario through the
afternoon which will reinforce northeast flow today. low
pressure, 29.40 inches, will lift from the central plains in the
western great lakes tomorrow, bringing another round of
precipitation to the region. this low will lift northeast of the
great lakes friday.


lhz361-011000-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
956 pm edt tue mar 31 2026

.rest of tonight...north winds 5 to 10 knots. waves 2 feet or
less. 
.wednesday...north winds 10 to 15 knots becoming northeast 5 to
10 knots in the afternoon. waves 2 feet or less. 
.wednesday night...northeast winds 5 to 10 knots becoming east
20 to 25 knots. a chance of snow showers after midnight. waves
1 to 3 feet building to 4 to 6 feet in the late evening and
overnight. waves occasionally around 8 feet. 
.thursday...east winds 20 to 25 knots increasing to 30 knots in
the late morning and afternoon. snow showers...sleet and freezing
rain in the morning...then freezing rain and showers in the
afternoon. waves 8 to 12 feet. waves occasionally around 15 feet.
.thursday night...east winds to 30 knots decreasing to 20 to
25 knots with gusts to around 30 knots by midnight...then
becoming southeast 15 to 20 knots after midnight. showers. waves
8 to 12 feet. waves occasionally around 15 feet. 
.friday...southwest winds 15 to 20 knots becoming west 10 to
15 knots late in the afternoon...then becoming northeast 15 to
20 knots late in the evening. a chance of rain...freezing rain
and snow late in the evening. waves 4 to 6 feet. waves
occasionally around 8 feet. 
.saturday...east winds 20 to 25 knots decreasing to 15 to
20 knots early in the evening...then becoming southeast 20 to
25 knots by midnight. rain and freezing rain early in the
morning. a chance of snow. rain and freezing rain likely . waves
6 to 9 feet. waves occasionally around 12 feet. 
.sunday...west winds to 30 knots becoming northwest 20 to
25 knots with gusts to around 30 knots . a chance of rain and
snow early in the morning. waves 6 to 9 feet. waves occasionally
around 12 feet. 

wave heights are for ice free areas.

$$

fzus63 kdtx 010156
glflh 
expires:202604011000;;620809

open lake forecast for lake huron
national weather service detroit/pontiac mi
956 pm edt tue mar 31 2026

for waters beyond five nautical miles off shore on lake huron

waves are the significant wave height - the average of the highest
1/3 of the wave spectrum. occasional wave height is the average of
the highest 1/10 of the wave spectrum.

.synopsis...high pressure moves across ontario through the
afternoon which will reinforce northeast flow today. low
pressure, 29.40 inches, will lift from the central plains in the
western great lakes tomorrow, bringing another round of
precipitation to the region. this low will lift northeast of the
great lakes friday.


lhz362-363-011000-
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-
956 pm edt tue mar 31 2026

.rest of tonight...north winds 10 to 15 knots. waves 3 to 5 feet.
.wednesday...north winds 10 to 15 knots. waves 3 to 5 feet. 
.wednesday night...northeast winds 15 to 20 knots becoming east
20 to 25 knots after midnight. a chance of snow showers...showers
and sleet after midnight. waves 5 to 7 feet. waves occasionally
around 10 feet. 
.thursday...east winds 20 to 25 knots with gusts to around
30 knots. showers...freezing rain and a chance of snow showers in
the morning...then showers and freezing rain in the afternoon.
waves 8 to 12 feet. waves occasionally around 15 feet. 
.thursday night...east winds 15 to 20 knots becoming southeast
20 to 25 knots with gusts to around 30 knots in the late evening
and overnight. showers and a chance of thunderstorms in the
evening...then showers after midnight. waves 8 to 12 feet. waves
occasionally around 15 feet. 
.friday...southwest winds 15 to 20 knots becoming west 10 to
15 knots late in the morning...then becoming north 15 to 20 knots
late in the evening. a chance of showers. waves 5 to 7 feet.
waves occasionally around 10 feet. 
.saturday...east winds 20 to 25 knots decreasing to 15 to
20 knots until early evening...then becoming south 20 to 25 knots
by midnight. rain and freezing rain early in the morning. a
chance of rain. a chance of snow by midnight. waves 6 to 9 feet.
waves occasionally around 12 feet. 
.sunday...west winds 20 to 25 knots increasing to 30 knots until
early evening...then becoming northwest 20 to 25 knots by
midnight. a chance of rain early in the morning. waves 10 to
14 feet. waves occasionally around 18 feet. 


$$

fzus63 kmkx 311949
glflm 
expires:202604010315;;607711

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
249 pm cdt tue mar 31 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 slow moving cold front over southern lake michigan will reach 
the southern tip of the lake late this afternoon. modest 
southerly winds south of the front will shift northerly and become
brisk into wednesday. scattered thunderstorms will continue over 
the southern portion of the lake into early this evening. 

breezy easterly winds are then expected wednesday night into 
thursday between high pressure of 30.7 inches east of james bay in
canada, and low pressure of 29.4 inches lifting from the central 
plains into wisconsin. gusts could approach gale force over far 
northern lake michigan on thursday. the breezy easterly winds will
shift southerly from south to north across the lake thursday
afternoon and evening with the passage of a warm front, then
followed by the cold front with winds shifting westerly late
thursday night. 


lmz080-669-671-673-675-777-779-870-872-874-876-878-010315-
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-
249 pm cdt tue mar 31 2026

sheboygan wi to pentwater mi south...

.tonight...north winds to 30 kt. scattered rain showers with
isolated thunderstorms this evening. waves 4 to 7 ft occasionally
to 9 ft. 
.wednesday...northeast winds to 30 kt diminishing to 15 to 25 kt.
isolated rain showers in the afternoon. waves 4 to 7 ft
occasionally to 9 ft. 
.wednesday night...east winds 15 to 25 kt. rain likely in the
evening, then rain and freezing rain overnight. waves 4 to 7 ft
occasionally to 9 ft. 
.thursday...southeast winds to 30 kt becoming south. rain in the
morning, then rain with a chance of thunderstorms in the
afternoon. waves 5 to 8 ft occasionally to 10 ft building to 7 to
10 ft occasionally to 13 ft. 
.thursday night...south winds to 30 kt becoming southwest to 30 
kt. rain with a chance of thunderstorms in the evening. waves 8 to
11 ft occasionally to 14 ft. 
.friday...west winds 10 to 20 kt veering to northeast 10 to
15 kt. waves 4 to 7 ft occasionally to 9 ft subsiding to 2 to
4 ft. 
.friday night...northeast winds 15 to 25 kt becoming east 10 to
20 kt. rain likely with a chance of thunderstorms. waves 4 to
6 ft occasionally to 8 ft building to 4 to 7 ft occasionally to
9 ft. 
.saturday...south winds 15 to 25 kt becoming west. chance of
rain. waves 5 to 8 ft occasionally to 10 ft. 
.sunday...northwest winds to 30 kt. waves 8 to 11 ft occasionally
to 14 ft.  

$$

fzus63 kmkx 311949
glflm 
expires:202604010315;;607710

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
249 pm cdt tue mar 31 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 slow moving cold front over southern lake michigan will reach 
the southern tip of the lake late this afternoon. modest 
southerly winds south of the front will shift northerly and become
brisk into wednesday. scattered thunderstorms will continue over 
the southern portion of the lake into early this evening. 

breezy easterly winds are then expected wednesday night into 
thursday between high pressure of 30.7 inches east of james bay in
canada, and low pressure of 29.4 inches lifting from the central 
plains into wisconsin. gusts could approach gale force over far 
northern lake michigan on thursday. the breezy easterly winds will
shift southerly from south to north across the lake thursday
afternoon and evening with the passage of a warm front, then
followed by the cold front with winds shifting westerly late
thursday night. 


lmz261-362-364-366-563-565-567-868-010315-
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-
249 pm cdt tue mar 31 2026

sheboygan wi to pentwater mi north...

.tonight...north winds to 30 kt diminishing to 15 to 25 kt. waves
4 to 6 ft occasionally to 8 ft. 
.wednesday...northeast winds 15 to 25 kt. waves 4 to 7 ft
occasionally to 9 ft. 
.wednesday night...northeast winds to 30 kt becoming east. chance
of rain in the evening, then rain with freezing rain and snow
likely overnight. waves 5 to 8 ft occasionally to 10 ft.
.thursday...east winds to 30 kt becoming southeast. brief gales
are possible. rain, freezing rain and snow in the morning, then 
rain and freezing rain in the afternoon. waves 7 to 10 ft 
occasionally to 13 ft. 
.thursday night...south winds to 30 kt becoming southwest to 30 
kt. brief gales are possible. rain with a chance of thunderstorms
in the evening. waves 8 to 11 ft occasionally to 14 ft. 
.friday...west winds to 30 kt becoming northwest 10 to 20 kt in
the afternoon. waves 5 to 8 ft occasionally to 10 ft subsiding to
3 to 5 ft. 
.friday night...northeast winds 15 to 25 kt. chance of rain,
freezing rain likely with a chance of snow. waves 4 to 6 ft
occasionally to 8 ft building to 4 to 7 ft occasionally to 9 ft. 
.saturday...east winds to 30 kt. rain likely with freezing rain.
waves 5 to 8 ft occasionally to 10 ft. 
.sunday...northwest gales to 35 kt diminishing to 30 kt. waves
7 to 10 ft occasionally to 13 ft subsiding to 6 to 9 ft
occasionally to 12 ft.  

$$

fzus63 kmqt 311958
glfls 
expires:202604010800;;607887

open lake forecast for lake superior
national weather service marquette mi
358 pm edt tue mar 31 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, lake superior is between a 29.7 inch low over 
southern ontario and a 30.3 inch high over the north 
dakota/saskatchewan/manitoba triple point. by wednesday afternoon, 
the low pressure will depart to the east while the high phases with 
another high and builds to 30.6 inches over james bay. wednesday 
night, the high builds to 30.7 inches over quebec while a 29.4 inch 
colorado low moves into western kansas. throughout the day thursday, 
this low moves northeast, reaching wisconsin at 29.5 inches thursday 
night. the low shifts to the ontario/quebec line at 29.7 inches 
friday while another colorado low moves into kansas at 29.7 inches. 
this low moves into eastern iowa by friday night as sprawling 30.7 
inch high pressure resides over far northern ontario and hudson bay. 
the low moves through the upper great lakes at 29.6 inches saturday. 
by sunday, lake superior will be between the low at 29.4 inches over 
western quebec and a 30.3 inch high over the great plains.



lsz263-010800-
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-
358 pm edt tue mar 31 2026

...gale watch in effect from thursday morning through late
thursday night...

.late this afternoon...northeast winds 5 to 15 knots. a slight
chance of snow showers. waves 3 to 6 feet occasionally to 8 feet.
.tonight...northeast winds 5 to 15 knots. a slight chance of snow
showers through midnight. waves subsiding to 2 to 4 feet. 
.wednesday...east winds 10 to 20 knots increasing to 15 to
25 knots late. waves building to 3 to 6 feet occasionally to
8 feet. 
.wednesday night...east winds 15 to 25 knots. a chance of snow.
waves building to 4 to 7 feet occasionally to 9 feet. 
.thursday...east gales to 45 knots. snow likely through early
afternoon. a slight chance of sleet. snow, possibly mixed with
rain and freezing rain by mid afternoon. waves building to 11 to
15 feet occasionally to 19 feet. 
.thursday night...northeast gales to 45 knots becoming north
gales to 35 knots after midnight. snow, possibly mixed with rain
through midnight. a chance of freezing rain. a chance of snow
after midnight. waves subsiding to 6 to 9 feet occasionally to
11 feet. 
.friday...north winds 15 to 25 knots veering northeast by mid
afternoon. waves subsiding to 3 to 6 feet occasionally to 8 feet.
.friday night...northeast winds 20 to 30 knots veering east after
midnight. a chance of snow showers, possibly mixed with freezing
rain through midnight, then snow showers, possibly mixed with
rain after midnight. waves building to 9 to 12 feet occasionally
to 15 feet. 
.saturday...northeast winds 20 to 30 knots backing north. snow
showers, possibly mixed with rain, then a chance of snow showers.
waves building to 10 to 14 feet occasionally to 18 feet, then
subsiding to 7 to 10 feet occasionally to 13 feet. 
.sunday...northwest winds 20 to 30 knots becoming southwest 10 to
20 knots. waves subsiding to 1 to 3 feet. 

$$

fzus63 kmqt 311958
glfls 
expires:202604010800;;607886

open lake forecast for lake superior
national weather service marquette mi
358 pm edt tue mar 31 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, lake superior is between a 29.7 inch low over 
southern ontario and a 30.3 inch high over the north 
dakota/saskatchewan/manitoba triple point. by wednesday afternoon, 
the low pressure will depart to the east while the high phases with 
another high and builds to 30.6 inches over james bay. wednesday 
night, the high builds to 30.7 inches over quebec while a 29.4 inch 
colorado low moves into western kansas. throughout the day thursday, 
this low moves northeast, reaching wisconsin at 29.5 inches thursday 
night. the low shifts to the ontario/quebec line at 29.7 inches 
friday while another colorado low moves into kansas at 29.7 inches. 
this low moves into eastern iowa by friday night as sprawling 30.7 
inch high pressure resides over far northern ontario and hudson bay. 
the low moves through the upper great lakes at 29.6 inches saturday. 
by sunday, lake superior will be between the low at 29.4 inches over 
western quebec and a 30.3 inch high over the great plains.



lsz162-010800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
358 pm edt tue mar 31 2026 /258 pm cdt tue mar 31 2026/

...gale watch in effect from thursday morning through late
thursday night...

.late this afternoon...northeast winds 5 to 15 knots. a slight
chance of snow showers. waves 3 to 5 feet occasionally to 7 feet.
.tonight...northwest winds 5 to 15 knots becoming northeast 10 to
20 knots after midnight, then increasing to 15 to 25 knots late.
a slight chance of snow showers through midnight. waves subsiding
to 1 to 3 feet, then building to 2 to 4 feet. 
.wednesday...east winds 15 to 25 knots increasing to 20 to
30 knots late. a slight chance of snow by mid afternoon. waves
building to 4 to 7 feet occasionally to 9 feet. 
.wednesday night...east winds 20 to 30 knots increasing to
30 knots with a few gale force gusts to 35 knots possible late. a
chance of snow. waves building to 7 to 10 feet occasionally to
13 feet. 
.thursday...east gales to 40 knots becoming northeast gales to
45 knots by mid afternoon. snow, possibly mixed with sleet. a
slight chance of rain by mid afternoon. waves building to 12 to
17 feet occasionally to 21 feet. 
.thursday night...northeast gales to 45 knots becoming north
gales to 35 knots after midnight. snow through midnight, then a
chance of snow after midnight. waves subsiding to 5 to 8 feet
occasionally to 10 feet. 
.friday...north winds 15 to 25 knots veering northeast by mid
afternoon. waves subsiding to 2 to 4 feet, then building to 3 to
6 feet occasionally to 8 feet. 
.friday night...east winds 20 to 30 knots becoming northeast
gales to 35 knots after midnight. a chance of snow showers
through midnight, then snow showers, possibly mixed with rain
after midnight. waves building to 9 to 12 feet occasionally to
15 feet. 
.saturday...northeast winds 20 to 30 knots backing north. snow
showers, then a chance of snow showers. waves building to 10 to
14 feet occasionally to 18 feet, then subsiding to 3 to 6 feet
occasionally to 8 feet. 
.sunday...west winds 15 to 25 knots diminishing to 10 to
20 knots. waves subsiding to calm to 2 feet. 

$$

fzus63 kmqt 311958
glfls 
expires:202604010800;;607891

open lake forecast for lake superior
national weather service marquette mi
358 pm edt tue mar 31 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, lake superior is between a 29.7 inch low over 
southern ontario and a 30.3 inch high over the north 
dakota/saskatchewan/manitoba triple point. by wednesday afternoon, 
the low pressure will depart to the east while the high phases with 
another high and builds to 30.6 inches over james bay. wednesday 
night, the high builds to 30.7 inches over quebec while a 29.4 inch 
colorado low moves into western kansas. throughout the day thursday, 
this low moves northeast, reaching wisconsin at 29.5 inches thursday 
night. the low shifts to the ontario/quebec line at 29.7 inches 
friday while another colorado low moves into kansas at 29.7 inches. 
this low moves into eastern iowa by friday night as sprawling 30.7 
inch high pressure resides over far northern ontario and hudson bay. 
the low moves through the upper great lakes at 29.6 inches saturday. 
by sunday, lake superior will be between the low at 29.4 inches over 
western quebec and a 30.3 inch high over the great plains.



lsz267-010800-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
358 pm edt tue mar 31 2026

...gale watch in effect from thursday morning through late
thursday night...

.late this afternoon...northeast winds 10 to 20 knots. a slight
chance of rain showers, freezing rain and snow showers. waves
2 to 4 feet. 
.tonight...north winds 10 to 20 knots becoming northeast 15 to
25 knots after midnight. a slight chance of snow showers through
midnight. waves subsiding to 1 to 3 feet, then building to 3 to
5 feet occasionally to 7 feet. 
.wednesday...northeast winds 10 to 20 knots. waves subsiding to
calm to 2 feet. 
.wednesday night...east winds 10 to 20 knots increasing to 20 to
30 knots. a chance of snow. waves building to 3 to 6 feet
occasionally to 8 feet. 
.thursday...east gales to 40 knots. snow, possibly mixed with
freezing rain and sleet. rain by mid afternoon. waves building to
7 to 10 feet occasionally to 13 feet. 
.thursday night...east gales to 35 knots becoming west 20 to
30 knots after midnight. rain through midnight. a chance of snow.
a chance of rain after midnight. waves subsiding to 4 to 7 feet
occasionally to 9 feet. 
.friday...northwest winds 20 to 30 knots becoming north 15 to
25 knots by mid afternoon. waves subsiding to 3 to 5 feet
occasionally to 7 feet. 
.friday night...northeast winds 20 to 30 knots veering east after
midnight. rain and snow showers likely, possibly mixed with
freezing rain after midnight. waves building to 4 to 7 feet
occasionally to 9 feet. 
.saturday...east winds 20 to 30 knots becoming north gales to
35 knots. freezing rain. rain and snow showers. waves building to
5 to 8 feet occasionally to 10 feet, then subsiding to 3 to
6 feet occasionally to 8 feet. 
.sunday...northwest gales to 35 knots diminishing to 15 to
25 knots. a chance of snow showers. waves subsiding to 3 to
6 feet occasionally to 8 feet. 

$$

fzus63 kmqt 311958
glfls 
expires:202604010800;;607889

open lake forecast for lake superior
national weather service marquette mi
358 pm edt tue mar 31 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, lake superior is between a 29.7 inch low over 
southern ontario and a 30.3 inch high over the north 
dakota/saskatchewan/manitoba triple point. by wednesday afternoon, 
the low pressure will depart to the east while the high phases with 
another high and builds to 30.6 inches over james bay. wednesday 
night, the high builds to 30.7 inches over quebec while a 29.4 inch 
colorado low moves into western kansas. throughout the day thursday, 
this low moves northeast, reaching wisconsin at 29.5 inches thursday 
night. the low shifts to the ontario/quebec line at 29.7 inches 
friday while another colorado low moves into kansas at 29.7 inches. 
this low moves into eastern iowa by friday night as sprawling 30.7 
inch high pressure resides over far northern ontario and hudson bay. 
the low moves through the upper great lakes at 29.6 inches saturday. 
by sunday, lake superior will be between the low at 29.4 inches over 
western quebec and a 30.3 inch high over the great plains.



lsz265-010800-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
358 pm edt tue mar 31 2026

...gale watch in effect from thursday morning through late
thursday night...

.late this afternoon...northeast winds 10 to 20 knots. waves 3 to
6 feet occasionally to 8 feet. 
.tonight...north winds 15 to 25 knots. waves subsiding to 2 to
4 feet. 
.wednesday...northeast winds 10 to 20 knots veering east in the
afternoon, then increasing to 15 to 25 knots late. waves
subsiding to 1 to 3 feet, then building to 2 to 4 feet. 
.wednesday night...east winds 15 to 25 knots increasing to 20 to
30 knots after midnight. a chance of snow. waves building to 5 to
8 feet occasionally to 10 feet. 
.thursday...east gales to 40 knots. freezing spray through early
afternoon. a slight chance of freezing rain and sleet through
early afternoon. snow. sleet, possibly mixed with freezing rain
and rain by mid afternoon. waves building to 10 to 14 feet
occasionally to 18 feet. 
.thursday night...east gales to 40 knots becoming north gales to
35 knots after midnight. rain likely through midnight. a chance
of snow. a chance of rain after midnight. waves subsiding to 6 to
9 feet occasionally to 11 feet. 
.friday...northwest winds 20 to 30 knots veering north by mid
afternoon. waves subsiding to 3 to 5 feet occasionally to 7 feet.
.friday night...northeast winds 20 to 30 knots becoming east
gales to 35 knots after midnight. a chance of snow showers,
possibly mixed with freezing rain, rain showers and sleet through
midnight, then rain showers, freezing rain likely and snow
showers after midnight. waves building to 8 to 11 feet
occasionally to 14 feet. 
.saturday...east gales to 35 knots backing north. rain showers,
possibly mixed with freezing rain. snow showers. waves building
to 9 to 12 feet occasionally to 15 feet, then subsiding to 7 to
10 feet occasionally to 13 feet. 
.sunday...northwest gales to 35 knots becoming west 15 to
25 knots. a chance of snow showers. waves subsiding to calm to
2 feet. 

$$

fzus63 kmqt 311958
glfls 
expires:202604010800;;607890

open lake forecast for lake superior
national weather service marquette mi
358 pm edt tue mar 31 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, lake superior is between a 29.7 inch low over 
southern ontario and a 30.3 inch high over the north 
dakota/saskatchewan/manitoba triple point. by wednesday afternoon, 
the low pressure will depart to the east while the high phases with 
another high and builds to 30.6 inches over james bay. wednesday 
night, the high builds to 30.7 inches over quebec while a 29.4 inch 
colorado low moves into western kansas. throughout the day thursday, 
this low moves northeast, reaching wisconsin at 29.5 inches thursday 
night. the low shifts to the ontario/quebec line at 29.7 inches 
friday while another colorado low moves into kansas at 29.7 inches. 
this low moves into eastern iowa by friday night as sprawling 30.7 
inch high pressure resides over far northern ontario and hudson bay. 
the low moves through the upper great lakes at 29.6 inches saturday. 
by sunday, lake superior will be between the low at 29.4 inches over 
western quebec and a 30.3 inch high over the great plains.



lsz266-010800-
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-
358 pm edt tue mar 31 2026

...gale watch in effect from thursday morning through late
thursday night...

.late this afternoon...northeast winds 15 to 25 knots. a slight
chance of snow showers. waves 3 to 6 feet occasionally to 8 feet.
.tonight...north winds 15 to 25 knots veering northeast late. a
slight chance of snow showers through midnight. waves subsiding
to 2 to 4 feet. 
.wednesday...northeast winds 15 to 25 knots becoming east 10 to
20 knots in the afternoon. waves 2 to 4 feet. 
.wednesday night...east winds 15 to 25 knots increasing to 20 to
30 knots late. a chance of snow. waves building to 5 to 8 feet
occasionally to 10 feet. 
.thursday...east gales to 45 knots. a slight chance of freezing
rain through early afternoon. snow, possibly mixed with sleet.
freezing rain, possibly mixed with rain by mid afternoon. waves
building to 10 to 14 feet occasionally to 18 feet. 
.thursday night...east gales to 40 knots becoming north gales to
35 knots after midnight. rain, possibly mixed with freezing rain
through midnight. a chance of snow. a chance of rain, possibly
mixed with freezing rain after midnight. waves subsiding to 6 to
9 feet occasionally to 11 feet. 
.friday...northwest gales to 35 knots becoming north 20 to
30 knots by mid afternoon. waves subsiding to 3 to 6 feet
occasionally to 8 feet. 
.friday night...northeast winds 20 to 30 knots becoming east
gales to 35 knots after midnight. a chance of snow showers,
possibly mixed with rain and sleet through midnight. a chance of
freezing rain. snow showers, possibly mixed with rain after
midnight. waves building to 8 to 11 feet occasionally to 14 feet.
.saturday...east gales to 35 knots becoming north gales to
40 knots. freezing rain. snow showers, possibly mixed with rain.
waves subsiding to 7 to 10 feet occasionally to 13 feet, then
building to 11 to 15 feet occasionally to 19 feet. 
.sunday...northwest gales to 40 knots diminishing to 15 to
25 knots. a chance of snow showers. waves subsiding to 3 to
6 feet occasionally to 8 feet. 

$$

fzus63 kmqt 311958
glfls 
expires:202604010800;;607888

open lake forecast for lake superior
national weather service marquette mi
358 pm edt tue mar 31 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, lake superior is between a 29.7 inch low over 
southern ontario and a 30.3 inch high over the north 
dakota/saskatchewan/manitoba triple point. by wednesday afternoon, 
the low pressure will depart to the east while the high phases with 
another high and builds to 30.6 inches over james bay. wednesday 
night, the high builds to 30.7 inches over quebec while a 29.4 inch 
colorado low moves into western kansas. throughout the day thursday, 
this low moves northeast, reaching wisconsin at 29.5 inches thursday 
night. the low shifts to the ontario/quebec line at 29.7 inches 
friday while another colorado low moves into kansas at 29.7 inches. 
this low moves into eastern iowa by friday night as sprawling 30.7 
inch high pressure resides over far northern ontario and hudson bay. 
the low moves through the upper great lakes at 29.6 inches saturday. 
by sunday, lake superior will be between the low at 29.4 inches over 
western quebec and a 30.3 inch high over the great plains.



lsz264-010800-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
358 pm edt tue mar 31 2026

...gale watch in effect from thursday morning through late
thursday night...

.late this afternoon...northeast winds 5 to 15 knots. a slight
chance of snow showers. waves 3 to 6 feet occasionally to 8 feet.
.tonight...northeast winds 10 to 20 knots. waves subsiding to
2 to 4 feet. 
.wednesday...northeast winds 5 to 15 knots veering east in the
afternoon, then increasing to 10 to 20 knots late. waves
subsiding to 1 to 3 feet. 
.wednesday night...east winds 10 to 20 knots increasing to 20 to
30 knots. a slight chance of snow. waves building to 5 to 8 feet
occasionally to 10 feet. 
.thursday...east gales to 40 knots. snow likely through early
afternoon. a slight chance of sleet. snow, possibly mixed with
freezing rain by mid afternoon. waves building to 10 to 14 feet
occasionally to 18 feet. 
.thursday night...northeast gales to 40 knots becoming north
gales to 35 knots after midnight. snow, possibly mixed with
freezing rain and rain through midnight, then a chance of snow,
possibly mixed with freezing rain after midnight. freezing spray
after midnight. waves subsiding to 6 to 9 feet occasionally to
11 feet. 
.friday...north winds 20 to 30 knots becoming northeast 15 to
25 knots by mid afternoon. waves subsiding to 3 to 5 feet
occasionally to 7 feet. 
.friday night...northeast winds 20 to 30 knots veering east after
midnight. a chance of snow showers. a chance of freezing rain
after midnight. waves building to 8 to 11 feet occasionally to
14 feet. 
.saturday...northeast winds 20 to 30 knots becoming north gales
to 35 knots. snow showers likely with pockets of freezing rain,
then a chance of snow showers. waves building to 9 to 12 feet
occasionally to 15 feet, then subsiding to 7 to 10 feet
occasionally to 13 feet. 
.sunday...northwest gales to 35 knots becoming southwest 10 to
20 knots. waves subsiding to 1 to 3 feet. 

$$