fzus61 kbuf 232003
glflo 
expires:202603240300;;183164

open lake forecast for lake ontario
national weather service buffalo ny
403 pm edt mon mar 23 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 30.4 inch high will drift from southern lower 
michigan tonight to the mid-atlantic states by late tuesday before 
drifting off the east coast wednesday. a weak 29.7 inch low over the 
central great lakes early thursday will move to the canadian 
maritimes by early friday, with a trailing cold front crossing the 
lake thursday night.


loz065-240300-
lake ontario open waters from mexico bay to the saint lawrence
river-
403 pm edt mon mar 23 2026

.tonight...northwest winds 10 to 15 knots becoming north. waves
1 to 3 feet. 
.tuesday...northwest winds 5 to 15 knots becoming southwest.
waves 2 feet or less. 
.tuesday night...southwest winds 10 to 15 knots becoming west.
waves 1 to 3 feet. 
.wednesday...south winds around 10 knots. waves 2 feet or less. 
.wednesday night...southeast winds around 10 knots becoming
south. a chance of rain showers. waves 2 feet or less. 
.thursday...south winds 10 to 15 knots becoming northwest and
increasing to 15 to 25 knots. a chance of rain showers during the
day, then rain showers likely with a chance of snow showers
thursday night. waves 1 to 3 feet building to 3 to 5 feet. 
.friday...north winds 15 to 25 knots. a chance of rain and snow
showers during the day. waves 3 to 5 feet subsiding to 1 to
3 feet. 
.saturday...west winds 15 to 20 knots. waves 2 to 4 feet building
to 4 to 7 feet. waves occasionally around 9 feet. 

$$

fzus61 kbuf 232003
glflo 
expires:202603240300;;183163

open lake forecast for lake ontario
national weather service buffalo ny
403 pm edt mon mar 23 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 30.4 inch high will drift from southern lower 
michigan tonight to the mid-atlantic states by late tuesday before 
drifting off the east coast wednesday. a weak 29.7 inch low over the 
central great lakes early thursday will move to the canadian 
maritimes by early friday, with a trailing cold front crossing the 
lake thursday night.


loz063-064-240300-
lake ontario open waters from hamlin beach to mexico bay-
403 pm edt mon mar 23 2026

.tonight...northwest winds 15 to 20 knots diminishing to 10 to
15 knots. a chance of snow showers early. waves 2 to 4 feet
building to 3 to 5 feet, then subsiding to 2 to 4 feet. 
.tuesday...northwest winds 5 to 15 knots becoming west. waves
1 to 3 feet. 
.tuesday night...west winds 10 to 15 knots becoming southwest.
waves 1 to 3 feet. 
.wednesday...south winds 5 to 10 knots becoming southeast. waves
1 to 2 feet. 
.wednesday night...southeast winds around 10 knots becoming
south. a chance of rain showers. waves 1 to 2 feet. 
.thursday...southwest winds 10 to 15 knots becoming northwest and
increasing to 15 to 25 knots. a chance of rain showers during the
day, then rain showers likely with a chance of snow showers
thursday night. waves 1 to 2 feet building to 4 to 7 feet. waves
occasionally around 9 feet. 
.friday...north winds 15 to 25 knots becoming northwest. a chance
of rain and snow showers during the day. waves 4 to 7 feet
subsiding to 3 to 5 feet. waves occasionally around 9 feet. 
.saturday...west winds 15 to 25 knots. waves 3 to 5 feet building
to 5 to 8 feet. waves occasionally around 10 feet. 

$$

fzus61 kbuf 232003
glflo 
expires:202603240300;;183162

open lake forecast for lake ontario
national weather service buffalo ny
403 pm edt mon mar 23 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 30.4 inch high will drift from southern lower 
michigan tonight to the mid-atlantic states by late tuesday before 
drifting off the east coast wednesday. a weak 29.7 inch low over the 
central great lakes early thursday will move to the canadian 
maritimes by early friday, with a trailing cold front crossing the 
lake thursday night.


loz062-240300-
lake ontario open waters from the niagara river to hamlin beach-
403 pm edt mon mar 23 2026

.tonight...northwest winds 15 to 20 knots diminishing to 5 to
10 knots. waves 3 to 5 feet subsiding to 1 to 3 feet. 
.tuesday...northwest winds 5 to 10 knots becoming southwest and
increasing to 15 to 20 knots. waves 1 to 3 feet building to 2 to
4 feet. 
.tuesday night...southwest winds 15 to 20 knots diminishing to
5 to 15 knots. waves 2 to 4 feet subsiding to 1 to 3 feet. 
.wednesday...south winds 5 to 15 knots becoming southeast. waves
1 to 2 feet. 
.wednesday night...east winds 10 to 15 knots becoming south. a
chance of rain showers. waves 1 to 2 feet. 
.thursday...southwest winds 10 to 15 knots becoming northwest
15 to 20 knots. a chance of rain showers during the day, then
rain showers likely thursday night. waves 1 to 3 feet building to
4 to 6 feet. 
.friday...north winds 15 to 20 knots becoming northwest. waves
3 to 5 feet subsiding to 2 to 4 feet. 
.saturday...west winds 15 to 20 knots. waves 3 to 6 feet building
to 4 to 7 feet. waves occasionally around 9 feet. 

$$

fzus61 kcle 231942
glfle 
expires:202603240215;;182591

open lake forecast for lake erie
national weather service cleveland oh
342 pm edt mon mar 23 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 ridge averaging 30.40 inches will begin to build east across the
region tonight. the ridge will maintain influence over lake erie 
through tuesday before shifting east on wednesday. a strong cold 
front will move southeast across the lake late thursday with high 
pressure 30.40 inches building southeast into the region friday.


lez061-168-169-240215-
ripley to buffalo ny extending from 5nm off shoreline to us-
canadian border-geneva-on-the-
lake to conneaut oh beyond 5 nm off shoreline to us-
canadian border-
conneaut oh to ripley ny beyond 5 nm off shoreline to us-
canadian border-
342 pm edt mon mar 23 2026

.tonight...northwest winds 15 to 25 knots becoming north and
diminishing to less than 10 knots after midnight. a slight chance
of snow showers early. waves 2 to 4 feet subsiding to 1 to
3 feet. 
.tuesday...light and variable winds becoming west 10 to 15 knots.
waves 2 feet or less. 
.tuesday night...southwest winds 10 knots or less becoming south.
waves 2 feet or less. 
.wednesday...south winds 5 to 10 knots. waves 1 foot or less. 
.wednesday night...south winds 5 to 10 knots becoming southwest.
waves 1 to 2 feet. 
.thursday...southwest winds 10 to 15 knots becoming north 15 to
20 knots. a chance of rain showers and thunderstorms during the
day, then rain likely, a chance of thunderstorms and snow
thursday night. waves 1 to 3 feet building to 2 to 4 feet. 
.friday...north winds 15 to 20 knots becoming northwest 5 to
15 knots. waves 3 to 5 feet subsiding to 1 to 3 feet. 
.saturday...west winds 10 to 15 knots. waves 1 to 3 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 231942
glfle 
expires:202603240215;;182589

open lake forecast for lake erie
national weather service cleveland oh
342 pm edt mon mar 23 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 ridge averaging 30.40 inches will begin to build east across the
region tonight. the ridge will maintain influence over lake erie 
through tuesday before shifting east on wednesday. a strong cold 
front will move southeast across the lake late thursday with high 
pressure 30.40 inches building southeast into the region friday.


lez162>164-240215-
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-
342 pm edt mon mar 23 2026

.tonight...north winds 15 to 20 knots becoming northeast and
diminishing to less than 10 knots after midnight. a slight chance
of rain and snow showers early. waves 2 feet or less. 
.tuesday...southeast winds 10 knots or less becoming south. waves
1 foot or less. 
.tuesday night...southeast winds 10 knots or less becoming south.
waves 1 foot or less. 
.wednesday...south winds 5 to 10 knots. waves 1 foot or less. 
.wednesday night...south winds 10 to 15 knots becoming southwest.
waves 1 to 2 feet. 
.thursday...southwest winds 10 to 15 knots becoming north and
increasing to 15 to 25 knots. a chance of rain showers and
thunderstorms during the day, then rain likely with a chance of
snow thursday night. waves 1 to 3 feet building to 3 to 5 feet. 
.friday...north winds 15 to 25 knots diminishing to 10 to
15 knots. waves 3 to 6 feet subsiding to 1 to 3 feet. 
.saturday...west winds 10 to 15 knots. waves 1 to 2 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 231942
glfle 
expires:202603240215;;182590

open lake forecast for lake erie
national weather service cleveland oh
342 pm edt mon mar 23 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 ridge averaging 30.40 inches will begin to build east across the
region tonight. the ridge will maintain influence over lake erie 
through tuesday before shifting east on wednesday. a strong cold 
front will move southeast across the lake late thursday with high 
pressure 30.40 inches building southeast into the region friday.


lez165>167-240215-
vermilion to avon point oh beyond 5 nm off shoreline to us-
canadian border-
avon point to willowick oh beyond 5 nm off shoreline to us-
canadian border-willowick to geneva-on-the-
lake oh beyond 5nm off shoreline to us-canadian border-
342 pm edt mon mar 23 2026

.tonight...north winds 15 to 25 knots becoming northeast and
diminishing to less than 10 knots after midnight. a slight chance
of snow showers early. waves 2 to 4 feet subsiding to 1 to
3 feet. 
.tuesday...northeast winds 10 knots or less becoming west. waves
1 foot or less. 
.tuesday night...south winds 10 knots or less. waves 1 foot or
less. 
.wednesday...south winds 5 to 10 knots. waves 2 feet or less. 
.wednesday night...south winds 5 to 15 knots becoming southwest.
waves 1 to 2 feet. 
.thursday...southwest winds 10 to 15 knots becoming north and
increasing to 15 to 25 knots. a chance of rain showers and
thunderstorms during the day, then rain likely with a chance of
snow thursday night. waves 1 to 3 feet building to 3 to 6 feet. 
.friday...north winds 15 to 25 knots becoming northwest and
diminishing to 10 to 15 knots. waves 4 to 7 feet subsiding to
1 to 3 feet. waves occasionally around 9 feet. 
.saturday...west winds 15 to 20 knots. waves 1 to 3 feet building
to 2 to 4 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus63 kdtx 231931
glfsc 
expires:202603240345;;182335

lake st clair forecast
national weather service detroit/pontiac mi
331 pm edt mon mar 23 2026

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

.synopsis...high pressure, 30.50 inches, builds into the western
great lakes today while flurries linger over the central
waterways until this evening. the ridge briefly centers over
southern lower michigan tonight, but then gets forced out on
tuesday by an ontario low pressure system and its cold front. the
trough feature crosses the northern great lakes tuesday, clipping
the northern waters of lake huron which results in a few
additional light snow showers. a warm front lifts across the
great lakes region wednesday offering milder and wetter
conditions midweek.


lcz460-240345-
lake st clair-
331 pm edt mon mar 23 2026

.tonight...north winds 10 to 15 knots becoming light and variable.
partly cloudy in the evening then clearing. waves 2 feet or less.
.tuesday...south winds 5 to 10 knots becoming southwest 10 to 15
knots early in the afternoon...then diminishing to 5 to 10 knots
late in the afternoon. sunny early in the morning becoming partly
sunny. waves 2 feet or less.
.tuesday night...south winds 5 to 10 knots. partly cloudy early in
the evening becoming mostly cloudy. waves 2 feet or less.
.wednesday...south winds 5 to 10 knots increasing to 10 to 15 knots
in the late morning and afternoon. mostly cloudy. waves 2 feet or
less.
.wednesday night...south winds 10 to 15 knots becoming southwest 5
to 10 knots in the late evening and overnight. mostly cloudy
becoming partly cloudy. waves 2 feet or less.
.thursday...southwest winds 10 to 15 knots becoming northwest 15 to
20 knots in the evening. partly sunny in the morning becoming mostly
cloudy. a chance of light rain and thunderstorms in the afternoon. a
chance of light rain in the evening. waves 2 feet or less.
.friday...north winds 20 to 25 knots. partly cloudy. waves 1 to 3
feet.
.saturday...west winds 15 to 20 knots. mostly clear. waves 2 feet or
less.

$$

fzus63 kdtx 231931
glflh 
expires:202603240345;;182330

open lake forecast for lake huron
national weather service detroit/pontiac mi
331 pm edt mon mar 23 2026

for waters beyond five nautical miles off shore on lake huron

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

.synopsis...high pressure, 30.50 inches, builds into the western
great lakes today while flurries linger over the central
waterways until this evening. the ridge briefly centers over
southern lower michigan tonight, but then gets forced out on
tuesday by an ontario low pressure system and its cold front. the
trough feature crosses the northern great lakes tuesday, clipping
the northern waters of lake huron which results in a few
additional light snow showers. a warm front lifts across the
great lakes region wednesday offering milder and wetter
conditions midweek.


lhz361-240345-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
331 pm edt mon mar 23 2026

.tonight...northwest winds 10 to 15 knots decreasing to 5 to
10 knots late in the evening...then backing to the south after
midnight becoming southwest 10 to 15 knots early in the morning.
waves 1 to 3 feet. 
.tuesday...southwest winds 15 to 20 knots becoming west 10 to
15 knots late in the afternoon. a chance of snow. waves 3 to
5 feet. 
.tuesday night...west winds 5 to 10 knots backing to the
southeast in the late evening and overnight. waves 2 to 4 feet
subsiding to 2 feet or less in the late evening and overnight. 
.wednesday...southeast winds 10 to 15 knots. a chance of snow and
rain. waves 2 to 4 feet. 
.wednesday night...southeast winds 5 to 10 knots increasing to
10 to 15 knots after midnight. waves 2 to 4 feet subsiding to
1 to 3 feet in the late evening and overnight. 
.thursday...southeast winds 10 to 15 knots veering to the
southwest late in the morning...then becoming northwest 15 to
20 knots late in the afternoon becoming north 20 to 25 knots late
in the evening. a chance of rain and snow late in the morning.
waves 2 to 4 feet building to 4 to 6 feet late in the afternoon.
waves occasionally around 8 feet. 
.friday...north winds 15 to 20 knots becoming northwest 10 to
15 knots until early evening...then becoming west 15 to 20 knots
by midnight. waves 4 to 6 feet. waves occasionally around 8 feet.
.saturday...west winds 15 to 20 knots increasing to 20 to
25 knots until early evening...then becoming northwest 15 to
20 knots by midnight. waves 4 to 6 feet. 

wave heights are for ice free areas.

$$

fzus63 kdtx 231931
glflh 
expires:202603240345;;182331

open lake forecast for lake huron
national weather service detroit/pontiac mi
331 pm edt mon mar 23 2026

for waters beyond five nautical miles off shore on lake huron

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

.synopsis...high pressure, 30.50 inches, builds into the western
great lakes today while flurries linger over the central
waterways until this evening. the ridge briefly centers over
southern lower michigan tonight, but then gets forced out on
tuesday by an ontario low pressure system and its cold front. the
trough feature crosses the northern great lakes tuesday, clipping
the northern waters of lake huron which results in a few
additional light snow showers. a warm front lifts across the
great lakes region wednesday offering milder and wetter
conditions midweek.


lhz362-363-240345-
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-
331 pm edt mon mar 23 2026

.tonight...northwest winds 15 to 20 knots decreasing to 10 to
15 knots late in the evening...then becoming southwest 5 to
10 knots after midnight. waves 3 to 5 feet subsiding to 1 to
3 feet early in the morning. 
.tuesday...southwest 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 3 to
5 feet. 
.tuesday night...west winds 5 to 10 knots backing to the
southeast in the late evening and overnight. waves 3 to 5 feet
subsiding to 1 to 3 feet in the late evening and overnight. 
.wednesday...southeast winds 10 to 15 knots. a chance of snow in
the afternoon. waves 3 to 5 feet. 
.wednesday night...southeast winds 10 to 15 knots. waves 2 to
4 feet. 
.thursday...southeast winds 10 to 15 knots veering to the south
late in the morning...then becoming northwest 15 to 20 knots late
in the afternoon becoming north 20 to 25 knots with gusts to
around 30 knots late in the evening. a chance of rain. waves 2 to
4 feet building to 8 to 12 feet. waves occasionally around
15 feet. 
.friday...north winds 20 to 25 knots with gusts to around
30 knots decreasing to 15 to 20 knots in the late morning and
early afternoon...then backing to the northwest . waves 8 to
12 feet subsiding to 5 to 7 feet . waves occasionally around
15 feet. 
.saturday...west winds 15 to 20 knots increasing to 20 to
25 knots. waves 6 to 9 feet. waves occasionally around 12 feet. 


$$

fzus63 kdtx 231931
glflh 
expires:202603240345;;182332

open lake forecast for lake huron
national weather service detroit/pontiac mi
331 pm edt mon mar 23 2026

for waters beyond five nautical miles off shore on lake huron

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

.synopsis...high pressure, 30.50 inches, builds into the western
great lakes today while flurries linger over the central
waterways until this evening. the ridge briefly centers over
southern lower michigan tonight, but then gets forced out on
tuesday by an ontario low pressure system and its cold front. the
trough feature crosses the northern great lakes tuesday, clipping
the northern waters of lake huron which results in a few
additional light snow showers. a warm front lifts across the
great lakes region wednesday offering milder and wetter
conditions midweek.


lhz462>464-240345-
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-
331 pm edt mon mar 23 2026

.tonight...north winds 15 to 20 knots becoming northwest 10 to
15 knots late in the evening...then becoming north 5 to 10 knots
after midnight backing to the southwest early in the morning.
waves 3 to 5 feet subsiding to 2 to 4 feet early in the morning. 
.tuesday...southwest winds 5 to 10 knots increasing to 10 to
15 knots in the late morning and afternoon. waves 1 to 3 feet
building to 2 to 4 feet in the afternoon. 
.tuesday night...west winds 5 to 10 knots backing to the south in
the late evening and overnight. waves 1 to 3 feet. 
.wednesday...south winds 10 to 15 knots. waves 1 to 3 feet
building to 2 to 4 feet in the late morning and afternoon. 
.wednesday night...south winds 10 to 15 knots. waves 1 to 3 feet.
.thursday...southwest winds 10 to 15 knots becoming northwest
15 to 20 knots late in the afternoon...then becoming north 20 to
25 knots with gusts to around 30 knots late in the evening. a
chance of rain late in the morning. waves 1 to 3 feet building to
8 to 12 feet. waves occasionally around 15 feet. 
.friday...north winds 20 to 25 knots with gusts to around
30 knots becoming northwest 10 to 15 knots . waves 8 to 12 feet
subsiding to 4 to 6 feet by midnight. waves occasionally around
15 feet. 
.saturday...west winds 15 to 20 knots. waves 4 to 6 feet. waves
occasionally around 8 feet. 


$$

fzus63 kmkx 231948
glflm 
expires:202603240315;;182723

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
248 pm cdt mon mar 23 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...

low pressure of 29.6 inches off the coast of maine will continue
east as high pressure of 30.5 inches in the northern plains
pushes toward and builds into michigan. the pressure gradient 
is gradually weakening between these two systems which will 
bring an end to the gusty winds over the next few hours as the 
high builds in. light and variable winds are expected into this
evening as the high moves overhead. 

however, into the late overnight hours and into tuesday winds 
in the north half of the lake may become breezy as a stalling 
front moves over the north side of the lake behind the departing
high. this may actually bring south winds that may approach 
gales although gales remain unlikely at this time. winds will 
weaken through tuesday as the front weakens and high pressure to 
the north squeezes out the stronger pressure gradient to the east.

largely south winds remain through wednesday, as a broad low 
pressure around 29.8 inches approaches from the west. chances 
for precipitation on tuesday and again on wednesday though 
primarily for northern parts of the lake.

the next best chance for gales will come thursday evening as the
backside of a low pressure system around 29.6 inches works
southeast.


lmz080-669-671-673-675-777-779-870-872-874-876-878-240315-
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 mon mar 23 2026

sheboygan wi to pentwater mi south...

.tonight...northeast winds 10 to 15 kt becoming east late this
evening, then becoming south 10 to 20 kt after midnight
increasing to 15 to 25 kt late. waves 3 to 5 ft subsiding to 2 to
4 ft. 
.tuesday...south winds 15 to 25 kt diminishing to 10 to 20 kt.
waves 4 to 6 ft occasionally to 8 ft. 
.tuesday night...south winds 10 to 15 kt increasing to 10 to
20 kt. waves 2 to 4 ft. 
.wednesday...south winds 10 to 20 kt. waves 3 to 5 ft. 
.wednesday night...southwest winds 10 to 15 kt becoming south.
waves 2 to 4 ft. 
.thursday...southwest winds 10 to 15 kt veering to northwest
10 to 20 kt. chance of rain in the afternoon. waves 2 to 4 ft
building to 4 to 6 ft occasionally to 8 ft. 
.thursday night...north gales to 35 kt. waves 8 to 12 ft
occasionally to 16 ft building to 10 to 14 ft occasionally to
18 ft. 
.friday...north winds to 30 kt diminishing to 15 to 25 kt. waves
10 to 14 ft occasionally to 18 ft subsiding to 7 to 10 ft
occasionally to 13 ft. 
.saturday...west winds 15 to 25 kt becoming southwest. waves 4 to
7 ft occasionally to 9 ft.  

$$

fzus63 kmkx 231948
glflm 
expires:202603240315;;182722

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
248 pm cdt mon mar 23 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...

low pressure of 29.6 inches off the coast of maine will continue
east as high pressure of 30.5 inches in the northern plains
pushes toward and builds into michigan. the pressure gradient 
is gradually weakening between these two systems which will 
bring an end to the gusty winds over the next few hours as the 
high builds in. light and variable winds are expected into this
evening as the high moves overhead. 

however, into the late overnight hours and into tuesday winds 
in the north half of the lake may become breezy as a stalling 
front moves over the north side of the lake behind the departing
high. this may actually bring south winds that may approach 
gales although gales remain unlikely at this time. winds will 
weaken through tuesday as the front weakens and high pressure to 
the north squeezes out the stronger pressure gradient to the east.

largely south winds remain through wednesday, as a broad low 
pressure around 29.8 inches approaches from the west. chances 
for precipitation on tuesday and again on wednesday though 
primarily for northern parts of the lake.

the next best chance for gales will come thursday evening as the
backside of a low pressure system around 29.6 inches works
southeast.


lmz261-362-364-366-563-565-567-868-240315-
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 mon mar 23 2026

sheboygan wi to pentwater mi north...

.tonight...north winds 5 to 10 kt veering to south 10 to 20 kt
late this evening, then becoming southwest 15 to 25 kt after
midnight becoming south to 30 kt late. chance of snow overnight.
waves 2 to 4 ft building to 4 to 6 ft occasionally to 8 ft. 
.tuesday...southwest winds to 30 kt diminishing to 10 to 20 kt.
chance of snow in the morning. waves 6 to 9 ft occasionally to
12 ft subsiding to 4 to 6 ft occasionally to 8 ft. 
.tuesday night...south winds 10 to 20 kt. waves 3 to 5 ft. 
.wednesday...south winds 10 to 20 kt. waves 3 to 5 ft. 
.wednesday night...south winds 10 to 15 kt. waves 2 to 4 ft.
.thursday...southwest winds 10 to 20 kt veering to north 15 to
25 kt. chance of rain in the morning, then chance of rain and
snow in the afternoon. waves 1 to 3 ft building to 3 to 5 ft.
.thursday night...north winds to 30 kt. waves 8 to 11 ft
occasionally to 14 ft building to 8 to 12 ft occasionally to
16 ft. 
.friday...north winds to 30 kt becoming northwest 10 to 20 kt.
waves 8 to 11 ft occasionally to 14 ft subsiding to 4 to 7 ft
occasionally to 9 ft. 
.saturday...west winds 15 to 25 kt. waves 4 to 7 ft occasionally
to 9 ft.  

$$

fzus63 kmqt 232001
glfls 
expires:202603240800;;183038

open lake forecast for lake superior
national weather service marquette mi
400 pm edt mon mar 23 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...

ridging builds to 30.4 inches over the western great lakes basin 
throughout today. a clipper low around 29.9 inches tracks across 
northern ontario and briefly extends a 30.1 inch trough over lake 
superior tuesday morning. 30.3 inch ridging quickly builds back over 
the lake by tuesday evening associated with high pressure of 30.4 
inches over northern ontario. another clipper low around 29.7 inches 
phases with a shortwave low lifting off of the northern rockies 
tuesday and tuesday night, bringing troughing of at least 29.8 
inches back across lake superior by wednesday. a secondary 29.6 inch 
low moves over the upper great lakes wednesday night into thursday. 
by friday, expansive ridging of 30.7 inches builds over the great 
plains, shifting over the mississippi river valley by saturday 
morning and south of the great lakes by that evening.



lsz265-240800-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
400 pm edt mon mar 23 2026

.late this afternoon...west winds 5 to 15 knots. waves calm to
2 feet. 
.tonight...south winds 10 to 20 knots increasing to 15 to
25 knots after midnight, then becoming southwest 20 to 30 knots
late. a chance of snow showers. waves building to 2 to 4 feet. 
.tuesday...northwest winds 10 to 20 knots veering northeast late.
a slight chance of snow showers through early afternoon. waves
subsiding to 1 to 3 feet. 
.tuesday night...east winds 10 to 20 knots veering southeast
after midnight. a slight chance of snow showers after midnight.
waves subsiding to calm to 2 feet, then building to 2 to 4 feet. 
.wednesday...southeast winds 15 to 25 knots becoming east 10 to
20 knots by mid afternoon. a slight chance of rain and snow
showers through early afternoon. waves building to 3 to 5 feet
occasionally to 7 feet, then subsiding to 2 to 4 feet. 
.wednesday night...east winds 10 to 20 knots. a chance of snow
showers. waves subsiding to 1 to 3 feet. 
.thursday...north winds 15 to 25 knots increasing to 20 to
30 knots by mid afternoon. a chance of rain showers through early
afternoon. a chance of snow showers. freezing spray by mid
afternoon. waves building to 4 to 7 feet occasionally to 9 feet. 
.thursday night...north winds 20 to 30 knots. freezing spray.
waves building to 6 to 10 feet occasionally to 13 feet. 
.friday...northwest winds 20 to 30 knots backing west. heavy
freezing spray. waves subsiding to 2 to 4 feet, then building to
3 to 6 feet occasionally to 8 feet. 
.saturday...west winds 20 to 30 knots. freezing spray. waves
subsiding to 2 to 4 feet, then building to 3 to 5 feet
occasionally to 7 feet. 

$$

fzus63 kmqt 232001
glfls 
expires:202603240800;;183039

open lake forecast for lake superior
national weather service marquette mi
400 pm edt mon mar 23 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...

ridging builds to 30.4 inches over the western great lakes basin 
throughout today. a clipper low around 29.9 inches tracks across 
northern ontario and briefly extends a 30.1 inch trough over lake 
superior tuesday morning. 30.3 inch ridging quickly builds back over 
the lake by tuesday evening associated with high pressure of 30.4 
inches over northern ontario. another clipper low around 29.7 inches 
phases with a shortwave low lifting off of the northern rockies 
tuesday and tuesday night, bringing troughing of at least 29.8 
inches back across lake superior by wednesday. a secondary 29.6 inch 
low moves over the upper great lakes wednesday night into thursday. 
by friday, expansive ridging of 30.7 inches builds over the great 
plains, shifting over the mississippi river valley by saturday 
morning and south of the great lakes by that evening.



lsz266-240800-
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-
400 pm edt mon mar 23 2026

.late this afternoon...west winds 5 to 15 knots. waves 1 to
3 feet subsiding to calm to 2 feet. 
.tonight...south winds 15 to 25 knots increasing to 20 to
30 knots after midnight, then becoming southwest to 30 knots with
a few gale force gusts to 35 knots possible late. a chance of
snow showers. a slight chance of rain showers after midnight.
waves building to 6 to 9 feet occasionally to 11 feet. 
.tuesday...northwest winds 20 to 30 knots becoming north 10 to
20 knots in the afternoon. a chance of snow showers through early
afternoon. waves subsiding to 2 to 4 feet. 
.tuesday night...east winds 10 to 20 knots veering southeast
after midnight, then becoming south 15 to 25 knots late. a slight
chance of snow showers after midnight. waves subsiding to calm to
2 feet, then building to 3 to 5 feet occasionally to 7 feet. 
.wednesday...southeast winds 15 to 25 knots backing east by mid
afternoon. a chance of snow showers, possibly mixed with rain.
waves subsiding to 2 to 4 feet. 
.wednesday night...east winds 10 to 20 knots. a chance of snow
showers. a chance of rain showers after midnight. waves subsiding
to 1 to 3 feet. 
.thursday...north winds 20 to 30 knots increasing to gales to
35 knots by mid afternoon. a chance of rain showers through early
afternoon. a chance of snow showers. freezing spray by mid
afternoon. waves building to 4 to 7 feet occasionally to 9 feet. 
.thursday night...north gales to 35 knots diminishing to 20 to
30 knots after midnight. freezing spray. waves building to 8 to
11 feet occasionally to 14 feet. 
.friday...northwest winds 20 to 30 knots backing west. freezing
spray. waves subsiding to 5 to 8 feet occasionally to 10 feet,
then building to 7 to 10 feet occasionally to 13 feet. 
.saturday...northwest winds 20 to 30 knots backing west. freezing
spray. waves building to 8 to 11 feet occasionally to 14 feet,
then subsiding to 5 to 8 feet occasionally to 10 feet. 

$$

fzus63 kmqt 232001
glfls 
expires:202603240800;;183036

open lake forecast for lake superior
national weather service marquette mi
400 pm edt mon mar 23 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...

ridging builds to 30.4 inches over the western great lakes basin 
throughout today. a clipper low around 29.9 inches tracks across 
northern ontario and briefly extends a 30.1 inch trough over lake 
superior tuesday morning. 30.3 inch ridging quickly builds back over 
the lake by tuesday evening associated with high pressure of 30.4 
inches over northern ontario. another clipper low around 29.7 inches 
phases with a shortwave low lifting off of the northern rockies 
tuesday and tuesday night, bringing troughing of at least 29.8 
inches back across lake superior by wednesday. a secondary 29.6 inch 
low moves over the upper great lakes wednesday night into thursday. 
by friday, expansive ridging of 30.7 inches builds over the great 
plains, shifting over the mississippi river valley by saturday 
morning and south of the great lakes by that evening.



lsz263-240800-
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-
400 pm edt mon mar 23 2026

.late this afternoon...southwest winds 10 to 20 knots. waves calm
to 2 feet. 
.tonight...south winds 10 to 20 knots becoming southwest 20 to
30 knots after midnight, then veering west late. a chance of snow
showers. waves building to 4 to 7 feet occasionally to 9 feet,
then subsiding to 3 to 6 feet occasionally to 8 feet. 
.tuesday...northwest winds 10 to 20 knots becoming northeast 5 to
15 knots in the afternoon, then veering east late. waves
subsiding to calm to 2 feet. 
.tuesday night...east winds 5 to 15 knots veering southeast late.
a slight chance of freezing rain and snow showers after midnight.
waves building to 2 to 4 feet. 
.wednesday...east winds 10 to 20 knots becoming northeast 5 to
15 knots by mid afternoon. a slight chance of rain showers
through early afternoon. a slight chance of snow showers. waves
building to 3 to 5 feet occasionally to 7 feet, then subsiding to
2 to 4 feet. 
.wednesday night...northeast winds 5 to 15 knots increasing to
10 to 20 knots after midnight. a chance of snow showers. a chance
of rain showers after midnight. waves subsiding to 1 to 3 feet,
then building to 2 to 4 feet. 
.thursday...north winds 10 to 20 knots. a chance of rain showers
through early afternoon. a chance of snow showers. waves building
to 3 to 5 feet occasionally to 7 feet. 
.thursday night...north winds 15 to 25 knots. freezing spray
after midnight. waves building to 4 to 7 feet occasionally to
9 feet, then subsiding to 3 to 6 feet occasionally to 8 feet. 
.friday...west winds 10 to 20 knots increasing to 15 to 25 knots.
freezing spray. waves subsiding to 2 to 4 feet, then building to
5 to 8 feet occasionally to 10 feet. 
.saturday...west winds 15 to 25 knots. waves subsiding to 3 to
6 feet occasionally to 8 feet. 

$$

fzus63 kmqt 232001
glfls 
expires:202603240800;;183035

open lake forecast for lake superior
national weather service marquette mi
400 pm edt mon mar 23 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...

ridging builds to 30.4 inches over the western great lakes basin 
throughout today. a clipper low around 29.9 inches tracks across 
northern ontario and briefly extends a 30.1 inch trough over lake 
superior tuesday morning. 30.3 inch ridging quickly builds back over 
the lake by tuesday evening associated with high pressure of 30.4 
inches over northern ontario. another clipper low around 29.7 inches 
phases with a shortwave low lifting off of the northern rockies 
tuesday and tuesday night, bringing troughing of at least 29.8 
inches back across lake superior by wednesday. a secondary 29.6 inch 
low moves over the upper great lakes wednesday night into thursday. 
by friday, expansive ridging of 30.7 inches builds over the great 
plains, shifting over the mississippi river valley by saturday 
morning and south of the great lakes by that evening.



lsz162-240800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
400 pm edt mon mar 23 2026 /300 pm cdt mon mar 23 2026/

.late this afternoon...south winds 5 to 15 knots. waves calm to
2 feet. 
.tonight...south winds 10 to 20 knots becoming southwest 15 to
25 knots after midnight, then veering west late. a slight chance
of rain showers through midnight. a slight chance of snow
showers. waves building to 3 to 5 feet occasionally to 7 feet,
then subsiding to 2 to 4 feet. 
.tuesday...north winds 5 to 15 knots veering east in the
afternoon, then increasing to 10 to 20 knots late. waves
subsiding to calm to 2 feet. 
.tuesday night...east winds 10 to 20 knots diminishing to 5 to
15 knots after midnight, then backing northeast late. a slight
chance of freezing rain and snow showers after midnight. waves
building to 1 to 3 feet. 
.wednesday...northeast winds 10 to 20 knots. a slight chance of
freezing rain through early afternoon. a slight chance of snow
showers. waves building to 2 to 4 feet. 
.wednesday night...east winds 5 to 15 knots becoming northeast
10 to 20 knots after midnight. a chance of snow showers. a chance
of rain showers after midnight. waves subsiding to 1 to 3 feet. 
.thursday...north winds 10 to 20 knots increasing to 15 to
25 knots by mid afternoon. a chance of rain showers through early
afternoon. a chance of snow showers. waves building to 2 to
4 feet. 
.thursday night...north winds 10 to 20 knots. waves subsiding to
1 to 3 feet, then building to 2 to 4 feet. 
.friday...west winds 10 to 20 knots increasing to 15 to 25 knots.
waves subsiding to calm to 2 feet, then building to 3 to 5 feet
occasionally to 7 feet. 
.saturday...west winds 15 to 25 knots diminishing to 10 to
20 knots. waves subsiding to 1 to 3 feet. 

$$

fzus63 kmqt 232001
glfls 
expires:202603240800;;183040

open lake forecast for lake superior
national weather service marquette mi
400 pm edt mon mar 23 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...

ridging builds to 30.4 inches over the western great lakes basin 
throughout today. a clipper low around 29.9 inches tracks across 
northern ontario and briefly extends a 30.1 inch trough over lake 
superior tuesday morning. 30.3 inch ridging quickly builds back over 
the lake by tuesday evening associated with high pressure of 30.4 
inches over northern ontario. another clipper low around 29.7 inches 
phases with a shortwave low lifting off of the northern rockies 
tuesday and tuesday night, bringing troughing of at least 29.8 
inches back across lake superior by wednesday. a secondary 29.6 inch 
low moves over the upper great lakes wednesday night into thursday. 
by friday, expansive ridging of 30.7 inches builds over the great 
plains, shifting over the mississippi river valley by saturday 
morning and south of the great lakes by that evening.



lsz267-240800-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
400 pm edt mon mar 23 2026

.late this afternoon...northwest winds 10 to 20 knots. waves calm
to 2 feet. 
.tonight...south winds 10 to 20 knots increasing to 20 to
30 knots after midnight, then veering southwest late. a chance of
snow showers. waves building to 6 to 9 feet occasionally to
11 feet. 
.tuesday...west winds 20 to 30 knots becoming northwest 15 to
25 knots in the afternoon, then diminishing to 10 to 20 knots
late. a slight chance of snow showers through early afternoon.
waves subsiding to 2 to 4 feet. 
.tuesday night...east winds 5 to 15 knots becoming southeast
10 to 20 knots after midnight, then increasing to 15 to 25 knots
late. a slight chance of snow showers after midnight. waves
subsiding to calm to 2 feet, then building to 2 to 4 feet. 
.wednesday...southeast winds 15 to 25 knots diminishing to 10 to
20 knots by mid afternoon. a slight chance of rain showers
through early afternoon. a chance of snow showers. waves
subsiding to 1 to 3 feet. 
.wednesday night...east winds 10 to 20 knots veering southeast
after midnight. a chance of snow showers. a chance of rain
showers after midnight. waves subsiding to calm to 2 feet, then
building to 1 to 3 feet. 
.thursday...north winds 15 to 25 knots increasing to 20 to
30 knots by mid afternoon. a chance of rain showers through early
afternoon. a chance of snow showers. waves building to 3 to
6 feet occasionally to 8 feet. 
.thursday night...north winds 20 to 30 knots diminishing to 15 to
25 knots after midnight. heavy freezing spray. waves building to
6 to 9 feet occasionally to 11 feet. 
.friday...northwest winds 15 to 25 knots increasing to 20 to
30 knots. freezing spray. waves subsiding to 5 to 8 feet
occasionally to 10 feet, then building to 8 to 11 feet
occasionally to 14 feet. 
.saturday...west winds 20 to 30 knots diminishing to 15 to
25 knots. freezing spray. waves building to 9 to 12 feet
occasionally to 15 feet, then subsiding to 5 to 8 feet
occasionally to 10 feet. 

$$

fzus63 kmqt 232001
glfls 
expires:202603240800;;183037

open lake forecast for lake superior
national weather service marquette mi
400 pm edt mon mar 23 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...

ridging builds to 30.4 inches over the western great lakes basin 
throughout today. a clipper low around 29.9 inches tracks across 
northern ontario and briefly extends a 30.1 inch trough over lake 
superior tuesday morning. 30.3 inch ridging quickly builds back over 
the lake by tuesday evening associated with high pressure of 30.4 
inches over northern ontario. another clipper low around 29.7 inches 
phases with a shortwave low lifting off of the northern rockies 
tuesday and tuesday night, bringing troughing of at least 29.8 
inches back across lake superior by wednesday. a secondary 29.6 inch 
low moves over the upper great lakes wednesday night into thursday. 
by friday, expansive ridging of 30.7 inches builds over the great 
plains, shifting over the mississippi river valley by saturday 
morning and south of the great lakes by that evening.



lsz264-240800-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
400 pm edt mon mar 23 2026

.late this afternoon...southwest winds 10 to 20 knots. waves calm
to 2 feet building to 1 to 3 feet. 
.tonight...south winds 15 to 25 knots becoming southwest 20 to
30 knots after midnight, then becoming west to 30 knots with a
few gale force gusts to 35 knots possible late. a chance of snow
showers. a slight chance of rain showers after midnight. waves
building to 5 to 9 feet occasionally to 11 feet. 
.tuesday...northwest winds 15 to 25 knots becoming north 10 to
20 knots in the afternoon, then becoming northeast 5 to 15 knots
late. waves subsiding to calm to 2 feet. 
.tuesday night...east winds 5 to 15 knots becoming southeast
10 to 20 knots after midnight. a slight chance of snow showers
after midnight. waves building to 2 to 4 feet. 
.wednesday...east winds 10 to 20 knots becoming northeast 5 to
15 knots by mid afternoon. a slight chance of rain showers
through early afternoon. a chance of snow showers. waves building
to 3 to 5 feet occasionally to 7 feet, then subsiding to 2 to
4 feet. 
.wednesday night...east winds 5 to 15 knots increasing to 10 to
20 knots after midnight. a chance of snow showers. waves
subsiding to 1 to 3 feet, then building to 2 to 4 feet. 
.thursday...north winds 15 to 25 knots. a chance of snow showers
through early afternoon. waves building to 3 to 5 feet
occasionally to 7 feet. 
.thursday night...north winds 15 to 25 knots. heavy freezing
spray. waves building to 4 to 8 feet occasionally to 10 feet. 
.friday...northwest winds 15 to 25 knots increasing to 20 to
30 knots. freezing spray. waves subsiding to 3 to 5 feet
occasionally to 7 feet, then building to 5 to 8 feet occasionally
to 10 feet. 
.saturday...west winds 20 to 30 knots diminishing to 15 to
25 knots. freezing spray. waves subsiding to 3 to 6 feet
occasionally to 8 feet, then building to 4 to 7 feet occasionally
to 9 feet. 

$$