fzus61 kbuf 250802
glflo 
expires:202604251500;;486474

open lake forecast for lake ontario
national weather service buffalo ny
402 am edt sat apr 25 2026

for waters beyond five nautical miles of shore on lake ontario

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

.synopsis...a 29.7 inch low will pass through the lower lakes today 
then slide southeast into the mid atlantic region. a 30.3 inch area 
of high pressure will build in across the lower great lakes tonight 
through monday. a 29.4 inch area of low pressure over the great 
plains monday night, will advance northeast into the upper great 
lakes later monday night into tuesday morning while pushing an 
attendant warm front across the lake before heading northeast to 
james bay tuesday night sending an attendant cold front across the 
lake.


loz062-251500-
lake ontario open waters from the niagara river to hamlin beach-
402 am edt sat apr 25 2026

.today...east winds to 30 knots becoming northeast. showers.
waves 5 to 8 feet building to 7 to 11 feet. waves occasionally
around 14 feet. 
.tonight...northeast winds 15 to 25 knots diminishing to 10 to
15 knots. a chance of showers early. waves 6 to 9 feet subsiding
to 1 to 3 feet. waves occasionally around 11 feet. 
.sunday...northeast winds 5 to 10 knots becoming east. waves 1 to
3 feet. 
.sunday night...east winds 10 knots or less. waves 1 foot or
less. 
.monday...east winds 5 to 15 knots becoming southeast. waves
2 feet or less. 
.tuesday...southeast winds 5 to 15 knots becoming southwest.
showers likely. waves 1 to 3 feet. 
.wednesday...west winds 5 to 10 knots becoming northwest. a
chance of showers. waves 2 feet or less. 

$$

fzus61 kbuf 250802
glflo 
expires:202604251500;;486475

open lake forecast for lake ontario
national weather service buffalo ny
402 am edt sat apr 25 2026

for waters beyond five nautical miles of shore on lake ontario

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

.synopsis...a 29.7 inch low will pass through the lower lakes today 
then slide southeast into the mid atlantic region. a 30.3 inch area 
of high pressure will build in across the lower great lakes tonight 
through monday. a 29.4 inch area of low pressure over the great 
plains monday night, will advance northeast into the upper great 
lakes later monday night into tuesday morning while pushing an 
attendant warm front across the lake before heading northeast to 
james bay tuesday night sending an attendant cold front across the 
lake.


loz063>065-251500-
lake ontario open waters from hamlin beach to the saint lawrence
river-
402 am edt sat apr 25 2026

.today...east winds 15 to 25 knots becoming northeast. showers.
waves 3 to 6 feet building to 5 to 8 feet. waves occasionally
around 10 feet. 
.tonight...east winds 15 to 20 knots diminishing to 5 to
15 knots. showers likely early, then a chance of showers late in
the evening. waves 3 to 6 feet subsiding to 1 to 3 feet. 
.sunday...northeast winds 10 knots or less becoming northwest.
waves 1 foot or less. 
.sunday night...northwest winds less than 10 knots becoming
north. waves 1 foot or less. 
.monday...northeast winds 10 knots or less becoming southeast
10 to 15 knots. waves 2 feet or less. 
.tuesday...southeast winds 15 to 20 knots becoming south. showers
likely. waves 1 to 3 feet building to 2 to 4 feet. 
.wednesday...south winds 15 to 20 knots becoming west 5 to
15 knots. showers likely. waves 1 to 3 feet. 

$$

fzus61 kcle 251311
glfle 
expires:202604252030;;498253

open lake forecast for lake erie
national weather service cleveland oh
911 am edt sat apr 25 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 high pressure ridge averaging 30.00 inches builds gradually 
from the james bay area through tonight. the ridge exits slowly 
eastward on sunday through monday night. during tuesday through 
tuesday night, a warm front sweeps northeastward across lake erie 
and will be followed quickly by the eastward passage of a cold 
front as a low moves from near lake superior to hudson bay and 
deepens to 29.10 inches. behind the cold front, a trough averaging
29.80 inches lingers over lake erie on wednesday before a ridge 
averaging 30.00 inches builds from the north-central united 
states wednesday night through this thursday. 


lez162>164-252030-
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-
911 am edt sat apr 25 2026

.rest of today...north winds 5 to 10 knots becoming northeast.
waves 2 feet or less. 
.tonight...northeast winds 10 to 15 knots. waves 1 to 3 feet. 
.sunday...northeast winds 10 to 15 knots becoming east. waves
1 to 3 feet. 
.sunday night...east winds 10 to 15 knots. waves 1 to 3 feet. 
.monday...east winds 10 to 15 knots becoming southeast 15 to
20 knots. showers likely with a chance of thunderstorms monday
night. waves 1 to 3 feet. 
.tuesday...south winds 15 to 20 knots becoming northwest 5 to
15 knots. a chance of showers. waves 1 to 3 feet subsiding to
1 foot or less. 
.wednesday...north winds 5 to 15 knots. waves 1 to 2 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 251311
glfle 
expires:202604252030;;498255

open lake forecast for lake erie
national weather service cleveland oh
911 am edt sat apr 25 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 high pressure ridge averaging 30.00 inches builds gradually 
from the james bay area through tonight. the ridge exits slowly 
eastward on sunday through monday night. during tuesday through 
tuesday night, a warm front sweeps northeastward across lake erie 
and will be followed quickly by the eastward passage of a cold 
front as a low moves from near lake superior to hudson bay and 
deepens to 29.10 inches. behind the cold front, a trough averaging
29.80 inches lingers over lake erie on wednesday before a ridge 
averaging 30.00 inches builds from the north-central united 
states wednesday night through this thursday. 


lez061-168-169-252030-
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-
911 am edt sat apr 25 2026

.rest of today...northeast winds 5 to 15 knots becoming north.
showers early, then a chance of showers from late morning on.
waves 1 to 3 feet. 
.tonight...northeast winds 10 to 15 knots. waves 1 to 3 feet. 
.sunday...northeast winds 5 to 15 knots. waves 2 feet or less. 
.sunday night...northeast winds 5 to 10 knots becoming east.
waves 2 feet or less. 
.monday...east winds 5 to 15 knots becoming southeast 15 to
20 knots. waves 1 to 3 feet. 
.tuesday...south winds 15 to 20 knots becoming southwest 5 to
15 knots. showers with a chance of thunderstorms during the day,
then a chance of showers tuesday night. waves 1 to 3 feet. 
.wednesday...west winds 5 to 10 knots becoming northwest. a
chance of showers during the day. waves 1 foot or less. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 251311
glfle 
expires:202604252030;;498254

open lake forecast for lake erie
national weather service cleveland oh
911 am edt sat apr 25 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 high pressure ridge averaging 30.00 inches builds gradually 
from the james bay area through tonight. the ridge exits slowly 
eastward on sunday through monday night. during tuesday through 
tuesday night, a warm front sweeps northeastward across lake erie 
and will be followed quickly by the eastward passage of a cold 
front as a low moves from near lake superior to hudson bay and 
deepens to 29.10 inches. behind the cold front, a trough averaging
29.80 inches lingers over lake erie on wednesday before a ridge 
averaging 30.00 inches builds from the north-central united 
states wednesday night through this thursday. 


lez165>167-252030-
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-
911 am edt sat apr 25 2026

.rest of today...north winds 5 to 10 knots becoming northeast. a
chance of showers early. waves 1 to 2 feet. 
.tonight...northeast winds 10 to 15 knots. waves 1 to 3 feet. 
.sunday...northeast winds 10 to 15 knots. waves 2 to 3 feet. 
.sunday night...northeast winds 5 to 15 knots becoming east.
waves 1 to 3 feet. 
.monday...east winds 5 to 15 knots becoming southeast 15 to
20 knots. a chance of showers monday night. waves 1 to 3 feet
building to 2 to 4 feet. 
.tuesday...south winds 15 to 20 knots becoming west and
diminishing to 5 to 10 knots. showers likely during the day, then
a chance of showers tuesday night. waves 2 to 4 feet subsiding to
1 to 3 feet. 
.wednesday...northwest winds 5 to 10 knots becoming north. a
chance of showers during the day. waves 1 to 2 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus63 kdtx 250754
glfsc 
expires:202604251600;;485924

lake st clair forecast
national weather service detroit/pontiac mi
354 am edt sat apr 25 2026

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

.synopsis...low pressure, 29.70 inches, migrates into the upper
ohio valley today. broad high pressure, 30.10 inches, then
extends into the great lakes from the north later today through
sunday.


lcz460-251600-
lake st clair-
354 am edt sat apr 25 2026

.today...north winds 5 to 10 knots increasing to 10 to 15 knots in
the afternoon. mostly cloudy. patchy fog early in the morning. waves
2 feet or less.
.tonight...northeast winds 10 to 15 knots diminishing to 5 to 10
knots early in the morning. partly cloudy. waves 2 feet or less.
.sunday...northeast winds 10 to 15 knots becoming east 5 to 10 knots
in the late morning and afternoon. mostly sunny. waves 2 feet or
less.
.sunday night...east winds 5 to 10 knots. mostly clear. waves 2 feet
or less.
.monday...southeast winds 10 to 15 knots increasing to 15 to 20
knots in the afternoon and evening. mostly sunny becoming partly
cloudy. waves 1 to 3 feet.
.tuesday...west winds 20 to 25 knots with gusts to 30 knots. partly
cloudy. showers likely and a chance of thunderstorms. waves 2 to 4
feet. a small craft advisory may be needed.
.wednesday...north winds 10 to 15 knots. partly cloudy. waves 2 feet
or less.

$$

fzus63 kdtx 250754
glflh 
expires:202604251600;;485919

open lake forecast for lake huron
national weather service detroit/pontiac mi
354 am edt sat apr 25 2026

for waters beyond five nautical miles off shore on lake huron

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

.synopsis...low pressure, 29.70 inches, migrates into the upper
ohio valley today. broad high pressure, 30.10 inches, then
extends into the great lakes from the north later today through
sunday.


lhz361-362-251600-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
lake huron from presque isle light to sturgeon point mi beyond
5nm off shore-
354 am edt sat apr 25 2026

.today...northeast winds 10 to 15 knots decreasing to 5 to
10 knots late in the afternoon. patchy fog in the morning. waves
3 to 5 feet. 
.tonight...north winds 5 to 10 knots. waves 1 to 3 feet. 
.sunday...northeast winds 5 to 10 knots. patchy fog in the
morning. waves 2 feet or less. 
.sunday night...northeast winds 5 to 10 knots veering to the east
after midnight. waves 2 feet or less. 
.monday...east winds 5 to 10 knots becoming southeast to 30 knots
with gusts to 35 knot gales. showers likely late in the evening.
waves 1 to 3 feet building to 8 to 12 feet. waves occasionally
around 15 feet. 
.tuesday...southeast winds to 30 knots with gusts to 40 knot
gales becoming south 20 to 25 knots with gusts to 35 knot gales
in the late morning and early afternoon...then becoming southwest
15 to 20 knots early in the evening becoming west 10 to 15 knots
by midnight. a chance of showers early in the morning. waves
10 to 14 feet subsiding to 3 to 5 feet. waves occasionally around
18 feet. 
.wednesday...northwest winds 10 to 15 knots. waves 1 to 3 feet
building to 3 to 5 feet . 


$$

fzus63 kdtx 250754
glflh 
expires:202604251600;;485920

open lake forecast for lake huron
national weather service detroit/pontiac mi
354 am edt sat apr 25 2026

for waters beyond five nautical miles off shore on lake huron

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

.synopsis...low pressure, 29.70 inches, migrates into the upper
ohio valley today. broad high pressure, 30.10 inches, then
extends into the great lakes from the north later today through
sunday.


lhz363-462>464-251600-
lake huron from sturgeon point to alabaster mi beyond 5nm off
shore-
lake huron from port austin to harbor beach beyond 5nm off shore-
lake huron from harbor beach to port sanilac beyond 5nm off shore-
lake huron from port sanilac to port huron beyond 5nm off shore-
354 am edt sat apr 25 2026

.today...northeast winds 10 to 15 knots. patchy fog in the
morning. waves 3 to 5 feet. 
.tonight...north winds 10 to 15 knots becoming northeast 5 to
10 knots after midnight. waves 2 to 4 feet subsiding to 1 to
3 feet after midnight. 
.sunday...north winds 5 to 10 knots. waves 1 to 3 feet. 
.sunday night...north winds 5 to 10 knots veering to the east in
the late evening and overnight. waves 2 feet or less. 
.monday...east winds 5 to 10 knots becoming southeast 20 to
25 knots with gusts to 35 knot gales. showers likely and a chance
of thunderstorms late in the evening. waves 1 to 3 feet building
to 8 to 12 feet. waves occasionally around 15 feet. 
.tuesday...southeast winds to 30 knots with gusts to 35 knot
gales becoming south 15 to 20 knots with gusts to around 30 knots
in the late morning and early afternoon...then becoming southwest
10 to 15 knots early in the evening becoming west 5 to 10 knots
by midnight. showers likely early in the morning. waves 6 to
9 feet subsiding to 2 to 4 feet by midnight. waves occasionally
around 12 feet. 
.wednesday...northwest winds 5 to 10 knots. waves 1 to 3 feet
building to 2 to 4 feet by midnight. 


$$

fzus63 kmkx 250800
glflm 
expires:202604251515;;486358

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
300 am cdt sat apr 25 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...

high pressure around 30.0 inches over the area will continue to
bring light northerly winds through today. areas of fog will 
linger into sunrise before lifting. tonight, east winds develop as
high pressure exits and low pressure develops in the central
plains. winds become northeasterly into sunday as low pressure
around 29.4 inches lifts into the missouri river valley. low
pressure will continue to lift northward into minnesota on monday,
bringing gusty southeast winds monday through monday night.
currently not expecting widespread gales, but potential for a few
gales does exist monday afternoon into monday night. a few severe
storms may develop across the southern half of the lake monday
night, with hail and wind the main threats. winds will shift to
become southwesterly into tuesday as low pressure exits into
ontario. tuesday afternoon into tuesday night, winds shift to
become northwesterly as a cold front works its way through the
region.


lmz080-669-671-673-675-777-779-870-872-874-876-878-251515-
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-
300 am cdt sat apr 25 2026

sheboygan wi to pentwater mi south...

.today...north winds 15 to 25 kt. waves 3 to 5 ft. 
.tonight...north winds 10 to 20 kt becoming east 10 to 15 kt.
waves 3 to 5 ft subsiding to 1 to 3 ft. 
.sunday...east winds 10 to 15 kt becoming northeast. waves 1 to
3 ft. 
.sunday night...east winds 10 to 15 kt becoming southeast 10 to
20 kt. waves 1 to 3 ft building to 3 to 5 ft. 
.monday...southeast winds 15 to 25 kt increasing to 30 kt. waves
4 to 7 ft occasionally to 9 ft building to 6 to 9 ft occasionally
to 12 ft. 
.monday night...southeast gales to 40 kt becoming south. showers
with a chance of thunderstorms. waves 7 to 10 ft occasionally to
13 ft. 
.tuesday...southwest winds to 30 kt becoming west 15 to 25 kt.
waves 6 to 9 ft occasionally to 12 ft subsiding to 4 to 6 ft
occasionally to 8 ft. 
.wednesday...north winds 10 to 20 kt. waves 1 to 3 ft.  

$$

fzus63 kmkx 250800
glflm 
expires:202604251515;;486357

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
300 am cdt sat apr 25 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...

high pressure around 30.0 inches over the area will continue to
bring light northerly winds through today. areas of fog will 
linger into sunrise before lifting. tonight, east winds develop as
high pressure exits and low pressure develops in the central
plains. winds become northeasterly into sunday as low pressure
around 29.4 inches lifts into the missouri river valley. low
pressure will continue to lift northward into minnesota on monday,
bringing gusty southeast winds monday through monday night.
currently not expecting widespread gales, but potential for a few
gales does exist monday afternoon into monday night. a few severe
storms may develop across the southern half of the lake monday
night, with hail and wind the main threats. winds will shift to
become southwesterly into tuesday as low pressure exits into
ontario. tuesday afternoon into tuesday night, winds shift to
become northwesterly as a cold front works its way through the
region.


lmz261-362-364-366-563-565-567-868-251515-
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-
300 am cdt sat apr 25 2026

sheboygan wi to pentwater mi north...

.today...north winds 10 to 20 kt becoming northeast 15 to 25 kt.
patchy fog. waves 1 to 3 ft. 
.tonight...northeast winds 10 to 20 kt diminishing to 10 to 15 kt
late in the evening, then becoming east after midnight
diminishing to 5 to 10 kt late. waves 1 to 3 ft subsiding to 1 to
2 ft. 
.sunday...east winds 5 to 10 kt becoming northeast 10 to 15 kt.
waves 1 to 2 ft. 
.sunday night...east winds 10 to 15 kt becoming southeast 10 to
20 kt. waves 1 to 2 ft building to 3 to 5 ft. 
.monday...southeast winds 15 to 25 kt increasing to 30 kt. waves
4 to 7 ft occasionally to 9 ft building to 5 to 8 ft occasionally
to 10 ft. 
.monday night...southeast gales to 40 kt becoming south. rain
showers with a chance of thunderstorms. waves 8 to 11 ft
occasionally to 14 ft. 
.tuesday...southwest gales to 35 kt diminishing to 30 kt. waves
7 to 10 ft occasionally to 13 ft subsiding to 4 to 7 ft
occasionally to 9 ft. 
.wednesday...northwest winds 10 to 20 kt. waves 1 to 3 ft.  

$$

fzus63 kmqt 250801
glfls 
expires:202604252000;;486410

open lake forecast for lake superior
national weather service marquette mi
401 am edt sat apr 25 2026

for waters beyond 5 nautical miles of shore on lake superior.

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

.synopsis...

lake superior is currently in 30.0 inch ridging between 29.8 inch 
low pressures over lake erie and southern saskatchewan. as both lows 
dissipate today, ridging builds over the lake to 30.2 inches as 30.4 
inch high pressure over northern quebec builds. the pattern remains 
stable over lake superior sunday while a 29.3 inch colorado low 
develops. throughout monday, this low moves northeast, arriving in 
wisconsin monday night. the low then crosses lake superior tuesday, 
reaching james bay tuesday night. in the wake of the low, 30.2 inch 
high pressure builds over the canadian prairie, sending 30.1 inch 
high pressure over the lake wednesday. this high approaches the 
great lakes slowly thursday.



lsz265-252000-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
401 am edt sat apr 25 2026

.early this morning...northwest winds 10 to 20 knots. patchy fog.
waves calm to 2 feet. 
.today...west winds 5 to 15 knots backing east late. patchy fog
through early afternoon. waves calm to 2 feet. 
.tonight...southeast winds 5 to 15 knots. waves calm to 2 feet. 
.sunday...southeast winds 10 to 20 knots backing east in the
afternoon. waves calm to 2 feet. 
.sunday night...southeast winds 10 to 20 knots increasing to
15 to 25 knots after midnight. waves calm to 2 feet. 
.monday...southeast winds 20 to 30 knots increasing to gales to
40 knots by mid afternoon. a chance of rain showers by mid
afternoon. waves building to 6 to 9 feet occasionally to 11 feet.
.monday night...southeast gales to 40 knots. rain showers. waves
building to 11 to 15 feet occasionally to 19 feet, then subsiding
to 10 to 14 feet occasionally to 18 feet. 
.tuesday...west gales to 40 knots becoming northwest gales to
35 knots. a chance of rain showers. waves subsiding to 8 to
11 feet occasionally to 14 feet, then building to 10 to 14 feet
occasionally to 18 feet. 
.wednesday...northwest winds 15 to 25 knots diminishing to 10 to
20 knots. waves subsiding to calm to 2 feet. 

$$

fzus63 kmqt 250801
glfls 
expires:202604252000;;486411

open lake forecast for lake superior
national weather service marquette mi
401 am edt sat apr 25 2026

for waters beyond 5 nautical miles of shore on lake superior.

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

.synopsis...

lake superior is currently in 30.0 inch ridging between 29.8 inch 
low pressures over lake erie and southern saskatchewan. as both lows 
dissipate today, ridging builds over the lake to 30.2 inches as 30.4 
inch high pressure over northern quebec builds. the pattern remains 
stable over lake superior sunday while a 29.3 inch colorado low 
develops. throughout monday, this low moves northeast, arriving in 
wisconsin monday night. the low then crosses lake superior tuesday, 
reaching james bay tuesday night. in the wake of the low, 30.2 inch 
high pressure builds over the canadian prairie, sending 30.1 inch 
high pressure over the lake wednesday. this high approaches the 
great lakes slowly thursday.



lsz266-252000-
lake superior east of a line from manitou island to marquette mi
and west of a line from grand marais mi to the us/canadian border
beyond 5nm from shore-
401 am edt sat apr 25 2026

.early this morning...northwest winds 10 to 20 knots. patchy fog.
waves calm to 2 feet. 
.today...northwest winds 5 to 15 knots veering north late. patchy
fog through early afternoon. waves calm to 2 feet. 
.tonight...southeast winds 5 to 15 knots. waves calm to 2 feet. 
.sunday...southeast winds 5 to 15 knots becoming east 10 to
20 knots in the afternoon. waves calm to 2 feet. 
.sunday night...southeast winds 10 to 20 knots increasing to
15 to 25 knots after midnight. waves calm to 2 feet. 
.monday...southeast winds 20 to 30 knots increasing to gales to
40 knots by mid afternoon. waves building to 6 to 9 feet
occasionally to 11 feet. 
.monday night...southeast gales to 40 knots. rain showers. waves
building to 11 to 15 feet occasionally to 19 feet, then subsiding
to 10 to 14 feet occasionally to 18 feet. 
.tuesday...west gales to 45 knots becoming northwest gales to
35 knots. a chance of rain showers. waves subsiding to 9 to
12 feet occasionally to 15 feet, then building to 10 to 14 feet
occasionally to 18 feet. 
.wednesday...northwest winds 15 to 25 knots diminishing to 10 to
20 knots. waves subsiding to 1 to 3 feet. 

$$

fzus63 kmqt 250801
glfls 
expires:202604252000;;486408

open lake forecast for lake superior
national weather service marquette mi
401 am edt sat apr 25 2026

for waters beyond 5 nautical miles of shore on lake superior.

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

.synopsis...

lake superior is currently in 30.0 inch ridging between 29.8 inch 
low pressures over lake erie and southern saskatchewan. as both lows 
dissipate today, ridging builds over the lake to 30.2 inches as 30.4 
inch high pressure over northern quebec builds. the pattern remains 
stable over lake superior sunday while a 29.3 inch colorado low 
develops. throughout monday, this low moves northeast, arriving in 
wisconsin monday night. the low then crosses lake superior tuesday, 
reaching james bay tuesday night. in the wake of the low, 30.2 inch 
high pressure builds over the canadian prairie, sending 30.1 inch 
high pressure over the lake wednesday. this high approaches the 
great lakes slowly thursday.



lsz263-252000-
lake superior from saxon harbor wi to upper entrance to portage
canal mi 5nm off shore to the us/canadian border including isle
royale national park-
401 am edt sat apr 25 2026

.early this morning...northwest winds 5 to 15 knots. patchy fog.
waves calm to 2 feet. 
.today...north winds 5 to 15 knots backing southwest in the
afternoon, then backing east late. patchy fog through early
afternoon. waves calm to 2 feet. 
.tonight...east winds 5 to 15 knots. a slight chance of rain
showers after midnight. waves calm to 2 feet. 
.sunday...east winds 5 to 15 knots backing northeast in the
afternoon. a slight chance of rain showers through early
afternoon. waves calm to 2 feet. 
.sunday night...east winds 5 to 15 knots. waves building to 1 to
3 feet, then subsiding to calm to 2 feet. 
.monday...east winds 15 to 25 knots increasing to 20 to 30 knots
by mid afternoon. rain showers likely by mid afternoon. waves
building to 6 to 9 feet occasionally to 11 feet. 
.monday night...east winds 20 to 30 knots diminishing to 15 to
25 knots after midnight. rain showers. waves building to 11 to
15 feet occasionally to 19 feet, then subsiding to 10 to 14 feet
occasionally to 18 feet. 
.tuesday...west gales to 35 knots becoming northwest 15 to
25 knots. a chance of rain showers. waves subsiding to 6 to
9 feet occasionally to 11 feet, then building to 9 to 12 feet
occasionally to 15 feet. 
.wednesday...west winds 10 to 20 knots becoming northwest 5 to
15 knots. waves subsiding to calm to 2 feet. 

$$

fzus63 kmqt 250801
glfls 
expires:202604252000;;486407

open lake forecast for lake superior
national weather service marquette mi
401 am edt sat apr 25 2026

for waters beyond 5 nautical miles of shore on lake superior.

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

.synopsis...

lake superior is currently in 30.0 inch ridging between 29.8 inch 
low pressures over lake erie and southern saskatchewan. as both lows 
dissipate today, ridging builds over the lake to 30.2 inches as 30.4 
inch high pressure over northern quebec builds. the pattern remains 
stable over lake superior sunday while a 29.3 inch colorado low 
develops. throughout monday, this low moves northeast, arriving in 
wisconsin monday night. the low then crosses lake superior tuesday, 
reaching james bay tuesday night. in the wake of the low, 30.2 inch 
high pressure builds over the canadian prairie, sending 30.1 inch 
high pressure over the lake wednesday. this high approaches the 
great lakes slowly thursday.



lsz162-252000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
401 am edt sat apr 25 2026 /301 am cdt sat apr 25 2026/

.early this morning...north winds 5 to 15 knots. patchy fog.
waves calm to 2 feet. 
.today...northeast winds 5 to 15 knots veering east in the
afternoon. waves calm to 2 feet. 
.tonight...northeast winds 5 to 15 knots. a chance of rain
showers after midnight. waves calm to 2 feet. 
.sunday...northeast winds 5 to 15 knots increasing to 10 to
20 knots late. a slight chance of rain showers through early
afternoon. waves calm to 2 feet. 
.sunday night...northeast winds 10 to 20 knots. a slight chance
of rain showers after midnight. waves building to 2 to 4 feet. 
.monday...east winds 15 to 25 knots. a chance of rain showers
through early afternoon, then rain showers by mid afternoon.
waves building to 5 to 8 feet occasionally to 10 feet. 
.monday night...northeast winds 15 to 25 knots becoming north
20 to 30 knots after midnight. rain showers. waves building to
7 to 10 feet occasionally to 13 feet, then subsiding to 5 to
8 feet occasionally to 10 feet. 
.tuesday...west winds 20 to 30 knots becoming northwest 10 to
20 knots. a chance of rain showers. waves subsiding to 4 to
8 feet occasionally to 10 feet. 
.wednesday...west winds 5 to 15 knots veering northwest. waves
building to 1 to 3 feet, then subsiding to calm to 2 feet. 

$$

fzus63 kmqt 250801
glfls 
expires:202604252000;;486412

open lake forecast for lake superior
national weather service marquette mi
401 am edt sat apr 25 2026

for waters beyond 5 nautical miles of shore on lake superior.

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

.synopsis...

lake superior is currently in 30.0 inch ridging between 29.8 inch 
low pressures over lake erie and southern saskatchewan. as both lows 
dissipate today, ridging builds over the lake to 30.2 inches as 30.4 
inch high pressure over northern quebec builds. the pattern remains 
stable over lake superior sunday while a 29.3 inch colorado low 
develops. throughout monday, this low moves northeast, arriving in 
wisconsin monday night. the low then crosses lake superior tuesday, 
reaching james bay tuesday night. in the wake of the low, 30.2 inch 
high pressure builds over the canadian prairie, sending 30.1 inch 
high pressure over the lake wednesday. this high approaches the 
great lakes slowly thursday.



lsz267-252000-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
401 am edt sat apr 25 2026

.early this morning...south winds 10 to 20 knots. patchy dense
fog. waves calm to 2 feet. 
.today...south winds 5 to 15 knots backing north late. patchy
dense fog through early afternoon. waves calm to 2 feet. 
.tonight...east winds 5 to 15 knots becoming southeast less than
10 knots after midnight, then increasing to 5 to 15 knots late.
waves calm to 2 feet. 
.sunday...southeast winds 5 to 15 knots backing east in the
afternoon, then increasing to 10 to 20 knots late. waves calm to
2 feet. 
.sunday night...southeast winds 10 to 20 knots. waves calm to
2 feet. 
.monday...southeast winds 15 to 25 knots increasing to gales to
40 knots by mid afternoon. waves building to 5 to 8 feet
occasionally to 10 feet. 
.monday night...southeast gales to 45 knots. a chance of rain
showers through midnight. rain showers after midnight. waves
building to 10 to 14 feet occasionally to 18 feet, then subsiding
to 9 to 12 feet occasionally to 15 feet. 
.tuesday...west gales to 35 knots veering northwest. rain showers
likely. waves subsiding to 7 to 10 feet occasionally to 13 feet,
then building to 10 to 14 feet occasionally to 18 feet. 
.wednesday...northwest winds 15 to 25 knots diminishing to 10 to
20 knots. waves subsiding to 1 to 3 feet. 

$$

fzus63 kmqt 250801
glfls 
expires:202604252000;;486409

open lake forecast for lake superior
national weather service marquette mi
401 am edt sat apr 25 2026

for waters beyond 5 nautical miles of shore on lake superior.

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

.synopsis...

lake superior is currently in 30.0 inch ridging between 29.8 inch 
low pressures over lake erie and southern saskatchewan. as both lows 
dissipate today, ridging builds over the lake to 30.2 inches as 30.4 
inch high pressure over northern quebec builds. the pattern remains 
stable over lake superior sunday while a 29.3 inch colorado low 
develops. throughout monday, this low moves northeast, arriving in 
wisconsin monday night. the low then crosses lake superior tuesday, 
reaching james bay tuesday night. in the wake of the low, 30.2 inch 
high pressure builds over the canadian prairie, sending 30.1 inch 
high pressure over the lake wednesday. this high approaches the 
great lakes slowly thursday.



lsz264-252000-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
401 am edt sat apr 25 2026

.early this morning...northwest winds 5 to 15 knots. patchy fog.
waves calm to 2 feet. 
.today...northwest winds 5 to 15 knots becoming west less than
10 knots in the afternoon, then backing south late. patchy fog
through early afternoon. waves calm to 2 feet. 
.tonight...east winds less than 10 knots veering southeast after
midnight, then backing east late. waves calm to 2 feet. 
.sunday...east winds less than 10 knots increasing to 5 to
15 knots in the afternoon. waves calm to 2 feet. 
.sunday night...east winds 5 to 15 knots increasing to 10 to
20 knots after midnight. waves calm to 2 feet. 
.monday...southeast winds 20 to 30 knots backing east by mid
afternoon. a chance of rain showers by mid afternoon. waves
building to 6 to 9 feet occasionally to 11 feet. 
.monday night...southeast gales to 35 knots. rain showers. waves
building to 12 to 17 feet occasionally to 21 feet, then subsiding
to 10 to 14 feet occasionally to 18 feet. 
.tuesday...west gales to 40 knots becoming northwest 20 to
30 knots. a chance of rain showers. waves subsiding to 8 to
11 feet occasionally to 14 feet, then building to 9 to 12 feet
occasionally to 15 feet. 
.wednesday...west winds 10 to 20 knots becoming northwest 5 to
15 knots. waves subsiding to calm to 2 feet. 

$$