fzus61 kbuf 240803
glflo 
expires:202604241500;;898604

open lake forecast for lake ontario
national weather service buffalo ny
403 am edt fri apr 24 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 strong 30.7 inch high centered well to the north will 
remain ridged south across the lake through today. a 29.6 inch low 
over the upper great lakes this morning will nudge a warm front 
toward the lake as it moves into the central great lakes this 
afternoon. this low will slightly weaken to 29.7 inches as it passes 
just southwest of lake tonight while nudging the warm front a bit 
further east over the lake. the low then slide southeast into the 
mid atlantic region saturday forcing the front back to the southwest 
of the lake. a 30.2 inch area of high pressure will then build 
across the lower great lakes saturday night 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. the 29.4 inch low will then continue northeast to james bay 
tuesday night sending an attendant cold front across the lake.


loz062-241500-
lake ontario open waters from the niagara river to hamlin beach-
403 am edt fri apr 24 2026

.today...east winds 15 to 20 knots. waves 2 to 4 feet. 
.tonight...east winds 15 to 25 knots. a chance of rain showers
after midnight. rain showers likely late. waves 2 to 4 feet
building to 3 to 6 feet. 
.saturday...east winds to 30 knots. rain showers likely. waves
5 to 9 feet. waves occasionally around 11 feet. 
.saturday night...east winds 15 to 25 knots diminishing to 10 to
15 knots. a chance of showers in the evening. waves 5 to 8 feet
subsiding to 1 to 3 feet. waves occasionally around 10 feet. 
.sunday...northeast winds 10 knots or less becoming east. waves
2 feet or less. 
.monday...east winds 5 to 15 knots becoming southeast. waves 1 to
3 feet. 
.tuesday...southeast winds 15 to 20 knots becoming southwest
10 to 15 knots. showers likely. waves 2 to 4 feet subsiding to
1 to 3 feet. 

$$

fzus61 kbuf 240803
glflo 
expires:202604241500;;898605

open lake forecast for lake ontario
national weather service buffalo ny
403 am edt fri apr 24 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 strong 30.7 inch high centered well to the north will 
remain ridged south across the lake through today. a 29.6 inch low 
over the upper great lakes this morning will nudge a warm front 
toward the lake as it moves into the central great lakes this 
afternoon. this low will slightly weaken to 29.7 inches as it passes 
just southwest of lake tonight while nudging the warm front a bit 
further east over the lake. the low then slide southeast into the 
mid atlantic region saturday forcing the front back to the southwest 
of the lake. a 30.2 inch area of high pressure will then build 
across the lower great lakes saturday night 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. the 29.4 inch low will then continue northeast to james bay 
tuesday night sending an attendant cold front across the lake.


loz063>065-241500-
lake ontario open waters from hamlin beach to the saint lawrence
river-
403 am edt fri apr 24 2026

.today...northeast winds 5 to 15 knots. waves 1 to 3 feet. 
.tonight...northeast winds 5 to 15 knots becoming east 15 to
20 knots. a chance of rain showers late. waves 1 to 3 feet
building to 2 to 4 feet. 
.saturday...east winds 15 to 25 knots. showers likely. waves 3 to
6 feet. 
.saturday night...east winds 15 to 20 knots diminishing to 5 to
15 knots. a chance of showers in the evening. waves 3 to 5 feet
subsiding to 2 feet or less. 
.sunday...east winds 10 knots or less becoming northeast. waves
1 foot or less. 
.monday...east winds 10 knots or less becoming southeast 10 to
15 knots. waves 1 to 3 feet. 
.tuesday...southeast winds 15 to 20 knots becoming south. showers
likely. waves 2 to 4 feet subsiding to 1 to 3 feet. 

$$

fzus61 kcle 240738
glfle 
expires:202604241415;;897828

open lake forecast for lake erie
national weather service cleveland oh
338 am edt fri apr 24 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 lingering warm front will slowly lift north of lake erie today
as a cold front moves east this evening into the overnight hours.
high pressure 30.00 inches will build into the region on saturday
and sunday before strengthening low pressure 29.40 inches moves
across the western great lakes region, moving another cold front
east on tuesday. 


lez162>164-241415-
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-
338 am edt fri apr 24 2026

.today...south winds 5 to 10 knots becoming east. a chance of
showers with a slight chance of thunderstorms early this
afternoon. a slight chance of showers and thunderstorms late.
waves 1 to 3 feet. 
.tonight...east winds 5 to 10 knots becoming north. showers with
a chance of thunderstorms in the evening, then a chance of
showers with a slight chance of thunderstorms after midnight.
waves 1 to 3 feet. 
.saturday...north winds around 10 knots. waves 1 to 2 feet. 
.saturday night...northeast winds 10 to 15 knots. waves 1 to
2 feet. 
.sunday...northeast winds 10 to 15 knots becoming east. waves
1 to 2 feet. 
.monday...east winds 10 to 15 knots becoming southeast and
increasing to 15 to 25 knots. showers monday night. waves 1 to
3 feet building to 3 to 5 feet. 
.tuesday...south winds 15 to 20 knots becoming west and
diminishing to around 10 knots. a chance of showers during the
day. waves 2 to 4 feet subsiding to 1 to 3 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 240738
glfle 
expires:202604241415;;897829

open lake forecast for lake erie
national weather service cleveland oh
338 am edt fri apr 24 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 lingering warm front will slowly lift north of lake erie today
as a cold front moves east this evening into the overnight hours.
high pressure 30.00 inches will build into the region on saturday
and sunday before strengthening low pressure 29.40 inches moves
across the western great lakes region, moving another cold front
east on tuesday. 


lez165>167-241415-
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-
338 am edt fri apr 24 2026

.today...southeast winds 5 to 10 knots becoming east. a slight
chance of showers and thunderstorms late. waves 2 feet or less
building to 2 to 4 feet. 
.tonight...east winds 5 to 15 knots becoming northeast. a chance
of showers and thunderstorms in the evening, then showers with a
chance of thunderstorms after midnight. showers likely with a
slight chance of thunderstorms late. waves 2 to 4 feet building
to 3 to 5 feet, then subsiding to 2 to 4 feet. 
.saturday...north winds around 10 knots becoming northeast. waves
2 to 3 feet. 
.saturday night...northeast winds 10 to 15 knots. waves 1 to
2 feet. 
.sunday...northeast winds 5 to 15 knots becoming east. waves 1 to
2 feet. 
.monday...east winds 5 to 15 knots becoming southeast 15 to
20 knots. showers likely monday night. waves 1 to 2 feet building
to 3 to 5 feet. 
.tuesday...south winds 15 to 20 knots becoming west 5 to
15 knots. a chance of showers during the day. waves 3 to 5 feet
subsiding to 2 to 4 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 240738
glfle 
expires:202604241415;;897830

open lake forecast for lake erie
national weather service cleveland oh
338 am edt fri apr 24 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 lingering warm front will slowly lift north of lake erie today
as a cold front moves east this evening into the overnight hours.
high pressure 30.00 inches will build into the region on saturday
and sunday before strengthening low pressure 29.40 inches moves
across the western great lakes region, moving another cold front
east on tuesday. 


lez061-168-169-241415-
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-
338 am edt fri apr 24 2026

.today...northeast winds 5 to 15 knots. waves 1 to 3 feet
building to 2 to 4 feet. 
.tonight...northeast winds 5 to 15 knots. a chance of showers and
thunderstorms in the evening, then showers with a chance of
thunderstorms after midnight. waves 2 to 4 feet. 
.saturday...northeast winds 10 to 15 knots becoming north. a
chance of showers. waves 2 to 4 feet subsiding to 1 to 3 feet. 
.saturday night...northeast winds 5 to 15 knots. waves 2 feet or
less. 
.sunday...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. 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 southwest 5 to
15 knots. showers likely during the day. waves 2 to 4 feet
subsiding to 1 to 3 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus63 kdtx 240728
glflh 
expires:202604241600;;897557

open lake forecast for lake huron
national weather service detroit/pontiac mi
328 am edt fri apr 24 2026

for waters beyond five nautical miles off shore on lake huron

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

.synopsis...a warm front will continue to lift through the region
today. low pressure, 29.70 inches, then develops along the front
and tracks across the southern great lakes tonight. this low will
bring increased chances for storms this afternoon into early
saturday. broad high pressure then extends into the great lakes
from the north late saturday through sunday.


lhz361-241600-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
328 am edt fri apr 24 2026

.today...east winds 20 to 25 knots with gusts to 30 knots. brief
gusts to 35 knot gales possible midday. a chance of showers in 
the afternoon. waves 8 to 12 feet. waves occasionally around 15 
feet.
.tonight...east winds 15 to 20 knots with gusts to around
30 knots becoming northeast 10 to 15 knots early in the morning.
showers likely in the evening...then a chance of showers after
midnight. patchy fog. waves 5 to 7 feet. waves occasionally
around 10 feet. 
.saturday...east winds 10 to 15 knots decreasing to 5 to 10 knots
in the late morning and afternoon. waves 3 to 5 feet subsiding to
1 to 3 feet early in the afternoon. 
.saturday night...light and variable winds becoming northeast
5 to 10 knots in the late evening and overnight. waves 2 feet or
less. 
.sunday...northeast winds 5 to 10 knots veering to the east late
in the afternoon. waves 2 feet or less. 
.monday...east winds 5 to 10 knots increasing to 30 knots with
gusts to 35 knot gales. a chance of showers by midnight. waves 1 
to 3 feet building to 12 to 16 feet. waves occasionally around 20 
feet. 
.tuesday...southeast winds to 30 knots with gusts to 35 knot 
gales decreasing to 20 to 25 knots with gusts to 35 knot gales in 
the late morning and early afternoon...then becoming south 15 to 
20 knots early in the evening becoming west 10 to 15 knots by 
midnight. showers likely early in the morning...then a chance of 
showers until early evening. waves 12 to 16 feet subsiding to 4 to
6 feet. waves occasionally around 20 feet. 


$$

fzus63 kdtx 240728
glfsc 
expires:202604241600;;897567

lake st clair forecast
national weather service detroit/pontiac mi
328 am edt fri apr 24 2026

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

.synopsis...a warm front will continue to lift through the region
today. low pressure, 29.70 inches, then develops along the front
and tracks across the southern great lakes tonight. this low will
bring increased chances for storms this afternoon into early
saturday. broad high pressure then extends into the great lakes
from the north late saturday through sunday.


lcz460-241600-
lake st clair-
328 am edt fri apr 24 2026

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

$$

fzus63 kdtx 240728
glflh 
expires:202604241600;;897559

open lake forecast for lake huron
national weather service detroit/pontiac mi
328 am edt fri apr 24 2026

for waters beyond five nautical miles off shore on lake huron

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

.synopsis...a warm front will continue to lift through the region
today. low pressure, 29.70 inches, then develops along the front
and tracks across the southern great lakes tonight. this low will
bring increased chances for storms this afternoon into early
saturday. broad high pressure then extends into the great lakes
from the north late saturday through sunday.


lhz462>464-241600-
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-
328 am edt fri apr 24 2026

.today...east winds 10 to 15 knots. waves 1 to 3 feet building to
2 to 4 feet in the late morning and afternoon. 
.tonight...east winds 10 to 15 knots. showers in the evening...
then a chance of showers after midnight. patchy fog after
midnight. waves 2 to 4 feet. 
.saturday...northeast winds 10 to 15 knots backing to the north
early in the afternoon. waves 2 to 4 feet. 
.saturday night...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 in the late evening and overnight. 
.sunday...northeast winds 5 to 10 knots. 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 by midnight. waves 1 
to 3 feet building to 10 to 14 feet. waves occasionally around 18 
feet. 
.tuesday...southeast winds to 30 knots with gusts to 35 knot 
gales becoming south 20 to 25 knots with gusts to 35 knot gales in
the late morning and early afternoon...then decreasing to 15 to 
20 knots early in the evening becoming southwest 10 to 15 knots by
midnight. showers likely early in the morning. a chance of 
showers in the late morning and early afternoon. waves 10 to 14 
feet subsiding to 4 to 6 feet . waves occasionally around 18 feet.



$$

fzus63 kdtx 240728
glflh 
expires:202604241600;;897558

open lake forecast for lake huron
national weather service detroit/pontiac mi
328 am edt fri apr 24 2026

for waters beyond five nautical miles off shore on lake huron

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

.synopsis...a warm front will continue to lift through the region
today. low pressure, 29.70 inches, then develops along the front
and tracks across the southern great lakes tonight. this low will
bring increased chances for storms this afternoon into early
saturday. broad high pressure then extends into the great lakes
from the north late saturday through sunday.


lhz362-363-241600-
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-
328 am edt fri apr 24 2026

.today...east winds 15 to 20 knots. gusts to 30 knots in the
morning. a chance of showers in the afternoon. waves 6 to 9 feet.
waves occasionally around 12 feet. 
.tonight...east winds 15 to 20 knots decreasing to 10 to 15 knots
after midnight. showers in the evening...then a chance of showers
after midnight. patchy fog after midnight. waves 5 to 7 feet.
waves occasionally around 10 feet. 
.saturday...northeast winds 10 to 15 knots. waves 3 to 5 feet. 
.saturday night...north winds 5 to 10 knots. waves 2 to 4 feet
subsiding to 1 to 3 feet in the late evening and overnight. 
.sunday...northeast winds 5 to 10 knots. 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 by midnight. waves 2 
feet or less building to 10 to 14 feet. waves occasionally around 
18 feet. 
.tuesday...southeast winds to 30 knots with gusts to 35 knot 
gales becoming south 20 to 25 knots with gusts to 35 knot gales in
the late morning and early afternoon...then decreasing to 15 to 
20 knots early in the evening becoming southwest 10 to 15 knots by
midnight. showers likely early in the morning...then a chance of 
showers in the late morning and early afternoon. waves 12 to 16 
feet subsiding to 6 to 9 feet . waves occasionally around 20 feet.



$$

fzus63 kmkx 240804
glflm 
expires:202604241530;;898667

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
304 am cdt fri apr 24 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...

areas of fog will continue over the lake today due to relatively 
mild and moist air flowing over the cold lake. modest south to 
southeast winds will persist through this morning as low pressure
around 29.2 inches moves eastward through northern wisconsin this
morning. a period of gusty easterly winds are expected across the
northern tip of the lake through this afternoon. a few gales are 
expected in this region through the morning. low pressure will
lift into western ontario this afternoon into tonight, bringing a
cold front and shifting winds to northwest by the overnight hours.
a few thunderstorms are expected ahead of and along this front,
but severe weather is not anticipated at this time.

winds will become light and northerly on saturday as high pressure
builds into ontario, shifting to become southeasterly and
increasing sunday night into monday as low pressure around 29.4
inches tracks northeastward through the central great plains.
winds are expected to become south-southeasterly into monday night
as low pressure lifts into northern wisconsin. low pressure may
track over northern lake michigan into tuesday morning, with winds
becoming westerly as low pressure exits to the east.


lmz080-669-671-673-675-777-779-870-872-874-876-878-241530-
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-
304 am cdt fri apr 24 2026

sheboygan wi to pentwater mi south...

.today...south winds 10 to 20 kt veering to west. chance of rain
showers and thunderstorms this morning, then chance of rain
showers and slight chance of thunderstorms this afternoon. waves
3 to 5 ft. 
.tonight...northwest winds 10 to 15 kt becoming north 10 to
20 kt. slight chance of rain showers in the evening. waves 2 to
4 ft. 
.saturday...north winds 10 to 20 kt. waves 3 to 5 ft. 
.saturday night...north winds 10 to 20 kt becoming east 10 to
15 kt. waves 3 to 5 ft. 
.sunday...east winds 10 to 15 kt becoming northeast. waves 1 to
3 ft. 
.sunday night...east winds 10 to 20 kt. waves 1 to 3 ft building
to 3 to 5 ft. 
.monday...southeast winds to 30 kt. chance of thunderstorms.
waves 4 to 7 ft occasionally to 9 ft building to 7 to 10 ft
occasionally to 13 ft. 
.tuesday...southwest winds to 30 kt becoming west 15 to 25 kt.
waves 7 to 10 ft occasionally to 13 ft subsiding to 4 to 7 ft
occasionally to 9 ft.  

$$

fzus63 kmkx 240804
glflm 
expires:202604241530;;898666

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
304 am cdt fri apr 24 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...

areas of fog will continue over the lake today due to relatively 
mild and moist air flowing over the cold lake. modest south to 
southeast winds will persist through this morning as low pressure
around 29.2 inches moves eastward through northern wisconsin this
morning. a period of gusty easterly winds are expected across the
northern tip of the lake through this afternoon. a few gales are 
expected in this region through the morning. low pressure will
lift into western ontario this afternoon into tonight, bringing a
cold front and shifting winds to northwest by the overnight hours.
a few thunderstorms are expected ahead of and along this front,
but severe weather is not anticipated at this time.

winds will become light and northerly on saturday as high pressure
builds into ontario, shifting to become southeasterly and
increasing sunday night into monday as low pressure around 29.4
inches tracks northeastward through the central great plains.
winds are expected to become south-southeasterly into monday night
as low pressure lifts into northern wisconsin. low pressure may
track over northern lake michigan into tuesday morning, with winds
becoming westerly as low pressure exits to the east.


lmz261-362-364-366-563-565-567-868-241530-
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-
304 am cdt fri apr 24 2026

sheboygan wi to pentwater mi north...

.today...isolated easterly gales to 35 kt in the northernmost
portions of the lake, southeasterly winds to 25 kt elsewhere.
winds becoming south early this afternoon veering to northwest to
30 kt late. chance of rain showers and slight chance of 
thunderstorms this morning, then rain showers likely with slight 
chance of thunderstorms this afternoon. waves 4 to 7 ft 
occasionally to 9 ft. 
.tonight...north winds 15 to 25 kt diminishing to 10 to 20 kt.
chance of rain showers in the evening. waves 3 to 5 ft subsiding
to 2 to 4 ft. 
.saturday...north winds 10 to 20 kt becoming northeast. waves
2 to 4 ft. 
.saturday night...northeast winds 10 to 20 kt becoming east 5 to
10 kt overnight. waves 2 to 4 ft. 
.sunday...east winds 5 to 10 kt becoming northeast 10 to 15 kt.
waves 1 to 2 ft. 
.sunday night...northeast winds 10 to 15 kt becoming southeast
10 to 20 kt. waves 1 to 2 ft building to 2 to 4 ft. 
.monday...east winds 15 to 25 kt increasing to 30 kt. waves 4 to
6 ft occasionally to 8 ft building to 6 to 9 ft occasionally to
12 ft. 
.tuesday...southwest winds to 30 kt. chance of rain showers.
waves 8 to 11 ft occasionally to 14 ft subsiding to 6 to 9 ft
occasionally to 12 ft.  

$$

fzus63 kmqt 240801
glfls 
expires:202604242000;;898514

open lake forecast for lake superior
national weather service marquette mi
401 am edt fri apr 24 2026

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

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

.synopsis...

a 29.4 inch low over northern lake winnipeg is sending a 29.6 inch 
trough across lake superior today. into saturday, the parent low 
weakens considerably as remnant troughing moves south and 30.0 inch 
ridging builds over lake superior by late saturday. this ridge 
builds to 30.1 inches by late sunday and persists into early monday. 
meanwhile, a 29.3 inch colorado low develops, moving towards the 
upper midwest by early monday, causing pressure over lake superior 
to fall rapidly toward 29.7 inches by mid-monday. lake superior 
pressure continues to fall as this 29.3 inch low reaches mn/wi by 
late monday and lake superior by early tuesday, causing pressure 
over the lake to remain low near 29.3 throughout tuesday. this low 
lifts north into ontario wednesday morning, and lake superior 
pressures increase to 29.8 inches by wednesday midday.



lsz162-242000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
401 am edt fri apr 24 2026 /301 am cdt fri apr 24 2026/

.early this morning...northeast winds 10 to 20 knots. rain
showers and a slight chance of thunderstorms. waves 3 to 5 feet
occasionally to 7 feet. 
.today...west winds 10 to 20 knots diminishing to 5 to 15 knots
late. a chance of rain showers through early afternoon. waves
subsiding to 2 to 4 feet. 
.tonight...northwest winds 5 to 15 knots veering north after
midnight. waves subsiding to calm to 2 feet. 
.saturday...north winds 5 to 15 knots veering south in the
afternoon, then backing east late. waves calm to 2 feet. 
.saturday night...east winds 5 to 15 knots backing northeast
after midnight. a slight chance of rain showers after midnight.
waves calm to 2 feet. 
.sunday...northeast winds 5 to 15 knots increasing to 10 to
20 knots by mid afternoon. waves calm to 2 feet. 
.sunday night...northeast winds 10 to 20 knots. waves building to
3 to 5 feet occasionally to 7 feet. 
.monday...east winds 20 to 30 knots backing northeast. a chance
of rain showers, then 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 gales to 35 knots diminishing to 15 to 25 knots.
a chance of rain showers. waves subsiding to 1 to 3 feet. 

$$

fzus63 kmqt 240801
glfls 
expires:202604242000;;898515

open lake forecast for lake superior
national weather service marquette mi
401 am edt fri apr 24 2026

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

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

.synopsis...

a 29.4 inch low over northern lake winnipeg is sending a 29.6 inch 
trough across lake superior today. into saturday, the parent low 
weakens considerably as remnant troughing moves south and 30.0 inch 
ridging builds over lake superior by late saturday. this ridge 
builds to 30.1 inches by late sunday and persists into early monday. 
meanwhile, a 29.3 inch colorado low develops, moving towards the 
upper midwest by early monday, causing pressure over lake superior 
to fall rapidly toward 29.7 inches by mid-monday. lake superior 
pressure continues to fall as this 29.3 inch low reaches mn/wi by 
late monday and lake superior by early tuesday, causing pressure 
over the lake to remain low near 29.3 throughout tuesday. this low 
lifts north into ontario wednesday morning, and lake superior 
pressures increase to 29.8 inches by wednesday midday.



lsz263-242000-
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 fri apr 24 2026

.early this morning...southeast winds to 30 knots with a few gale
force gusts to 35 knots possible. rain showers and a slight
chance of thunderstorms. waves 7 to 10 feet occasionally to
13 feet. 
.today...west winds to 30 knots with a few gale force gusts to
35 knots possible diminishing to 10 to 20 knots. rain showers
through early afternoon, then a slight chance of rain showers by
mid afternoon. waves building to 8 to 11 feet occasionally to
14 feet, then subsiding to 3 to 6 feet occasionally to 8 feet. 
.tonight...northwest winds 10 to 20 knots becoming north 5 to
15 knots after midnight, then backing northwest late. waves
subsiding to calm to 2 feet. 
.saturday...northwest winds 5 to 15 knots backing southwest in
the afternoon, then backing south late. waves calm to 2 feet. 
.saturday night...east winds 5 to 15 knots diminishing to less
than 10 knots after midnight. waves calm to 2 feet. 
.sunday...east winds 5 to 15 knots backing northeast by mid
afternoon. waves calm to 2 feet. 
.sunday night...east winds 5 to 15 knots. waves building to 1 to
3 feet. 
.monday...east gales to 35 knots. a chance of rain showers, then
rain showers. waves building to 10 to 14 feet occasionally to
18 feet, then subsiding to 8 to 11 feet occasionally to 14 feet. 
.tuesday...west gales to 35 knots. a chance of rain showers.
waves subsiding to 4 to 8 feet occasionally to 10 feet. 

$$

fzus63 kmqt 240801
glfls 
expires:202604242000;;898516

open lake forecast for lake superior
national weather service marquette mi
401 am edt fri apr 24 2026

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

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

.synopsis...

a 29.4 inch low over northern lake winnipeg is sending a 29.6 inch 
trough across lake superior today. into saturday, the parent low 
weakens considerably as remnant troughing moves south and 30.0 inch 
ridging builds over lake superior by late saturday. this ridge 
builds to 30.1 inches by late sunday and persists into early monday. 
meanwhile, a 29.3 inch colorado low develops, moving towards the 
upper midwest by early monday, causing pressure over lake superior 
to fall rapidly toward 29.7 inches by mid-monday. lake superior 
pressure continues to fall as this 29.3 inch low reaches mn/wi by 
late monday and lake superior by early tuesday, causing pressure 
over the lake to remain low near 29.3 throughout tuesday. this low 
lifts north into ontario wednesday morning, and lake superior 
pressures increase to 29.8 inches by wednesday midday.



lsz264-242000-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
401 am edt fri apr 24 2026

...gale warning in effect until 2 pm edt this afternoon...

.early this morning...southeast gales to 35 knots. rain showers
likely and a chance of thunderstorms. waves 8 to 11 feet
occasionally to 14 feet. 
.today...southeast gales to 40 knots becoming north 10 to
20 knots late. a slight chance of thunderstorms through early
afternoon. a chance of rain showers. waves building to 9 to
12 feet occasionally to 15 feet, then subsiding to 4 to 7 feet
occasionally to 9 feet. 
.tonight...north winds 5 to 15 knots. waves subsiding to 1 to
3 feet. 
.saturday...northwest winds 5 to 15 knots diminishing to less
than 10 knots in the afternoon, then backing south late. waves
subsiding to calm to 2 feet. 
.saturday night...east winds less than 10 knots. waves calm to
2 feet. 
.sunday...east winds less than 10 knots increasing to 5 to
15 knots by mid afternoon. waves calm to 2 feet. 
.sunday night...east winds 5 to 15 knots. waves calm to 2 feet. 
.monday...east gales to 35 knots becoming southeast gales to
40 knots. a chance of rain showers, then rain showers. 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 40 knots becoming northwest gales to
35 knots. a chance of rain showers. waves subsiding to 3 to
6 feet occasionally to 8 feet, then building to 4 to 7 feet
occasionally to 9 feet. 

$$

fzus63 kmqt 240801
glfls 
expires:202604242000;;898517

open lake forecast for lake superior
national weather service marquette mi
401 am edt fri apr 24 2026

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

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

.synopsis...

a 29.4 inch low over northern lake winnipeg is sending a 29.6 inch 
trough across lake superior today. into saturday, the parent low 
weakens considerably as remnant troughing moves south and 30.0 inch 
ridging builds over lake superior by late saturday. this ridge 
builds to 30.1 inches by late sunday and persists into early monday. 
meanwhile, a 29.3 inch colorado low develops, moving towards the 
upper midwest by early monday, causing pressure over lake superior 
to fall rapidly toward 29.7 inches by mid-monday. lake superior 
pressure continues to fall as this 29.3 inch low reaches mn/wi by 
late monday and lake superior by early tuesday, causing pressure 
over the lake to remain low near 29.3 throughout tuesday. this low 
lifts north into ontario wednesday morning, and lake superior 
pressures increase to 29.8 inches by wednesday midday.



lsz265-242000-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
401 am edt fri apr 24 2026

.early this morning...southeast winds 20 to 30 knots. rain
showers likely and a chance of thunderstorms. waves 4 to 7 feet
occasionally to 9 feet. 
.today...southeast winds to 30 knots with a few gale force gusts
to 35 knots possible diminishing to 15 to 25 knots in the
afternoon, then becoming west 10 to 20 knots late. rain showers
and a slight chance of thunderstorms through early afternoon,
then a chance of rain showers by mid afternoon. waves building to
6 to 9 feet occasionally to 11 feet, then subsiding to 3 to
5 feet occasionally to 7 feet. 
.tonight...west winds 10 to 20 knots veering northwest after
midnight. waves subsiding to calm to 2 feet. 
.saturday...northwest winds 10 to 20 knots becoming northeast
5 to 15 knots late. waves calm to 2 feet. 
.saturday night...east winds 5 to 15 knots veering southeast
after midnight. waves calm to 2 feet. 
.sunday...southeast winds 5 to 15 knots becoming east 10 to
20 knots by mid afternoon. waves calm to 2 feet. 
.sunday night...southeast winds 10 to 20 knots. waves calm to
2 feet. 
.monday...southeast gales to 40 knots. a chance of rain showers,
then rain showers. 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 45 knots. a chance of rain showers.
waves subsiding to 4 to 7 feet occasionally to 9 feet, then
building to 6 to 9 feet occasionally to 11 feet. 

$$

fzus63 kmqt 240801
glfls 
expires:202604242000;;898518

open lake forecast for lake superior
national weather service marquette mi
401 am edt fri apr 24 2026

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

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

.synopsis...

a 29.4 inch low over northern lake winnipeg is sending a 29.6 inch 
trough across lake superior today. into saturday, the parent low 
weakens considerably as remnant troughing moves south and 30.0 inch 
ridging builds over lake superior by late saturday. this ridge 
builds to 30.1 inches by late sunday and persists into early monday. 
meanwhile, a 29.3 inch colorado low develops, moving towards the 
upper midwest by early monday, causing pressure over lake superior 
to fall rapidly toward 29.7 inches by mid-monday. lake superior 
pressure continues to fall as this 29.3 inch low reaches mn/wi by 
late monday and lake superior by early tuesday, causing pressure 
over the lake to remain low near 29.3 throughout tuesday. this low 
lifts north into ontario wednesday morning, and lake superior 
pressures increase to 29.8 inches by wednesday midday.



lsz266-242000-
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 fri apr 24 2026

...gale warning in effect until 2 pm edt this afternoon...

.early this morning...southeast gales to 35 knots. a chance of
rain showers and a slight chance of thunderstorms. waves 8 to
11 feet occasionally to 14 feet. 
.today...southeast gales to 40 knots diminishing to 20 to
30 knots late. a chance of rain showers through early afternoon.
a slight chance of thunderstorms. rain showers by mid afternoon.
waves building to 9 to 12 feet occasionally to 15 feet, then
subsiding to 4 to 7 feet occasionally to 9 feet. 
.tonight...southeast winds 10 to 20 knots veering northwest after
midnight. a slight chance of rain showers through midnight. waves
subsiding to calm to 2 feet. 
.saturday...northwest winds 10 to 20 knots becoming north 5 to
15 knots late. waves calm to 2 feet. 
.saturday night...east winds 5 to 15 knots veering southeast
after midnight. waves calm to 2 feet. 
.sunday...southeast winds 5 to 15 knots backing east by mid
afternoon. waves calm to 2 feet. 
.sunday night...east winds 10 to 20 knots veering southeast after
midnight. waves building to 1 to 3 feet. 
.monday...southeast gales to 45 knots. rain showers likely. 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 45 knots. a chance of rain showers.
waves subsiding to 5 to 8 feet occasionally to 10 feet, then
building to 7 to 10 feet occasionally to 13 feet. 

$$

fzus63 kmqt 240801
glfls 
expires:202604242000;;898519

open lake forecast for lake superior
national weather service marquette mi
401 am edt fri apr 24 2026

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

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

.synopsis...

a 29.4 inch low over northern lake winnipeg is sending a 29.6 inch 
trough across lake superior today. into saturday, the parent low 
weakens considerably as remnant troughing moves south and 30.0 inch 
ridging builds over lake superior by late saturday. this ridge 
builds to 30.1 inches by late sunday and persists into early monday. 
meanwhile, a 29.3 inch colorado low develops, moving towards the 
upper midwest by early monday, causing pressure over lake superior 
to fall rapidly toward 29.7 inches by mid-monday. lake superior 
pressure continues to fall as this 29.3 inch low reaches mn/wi by 
late monday and lake superior by early tuesday, causing pressure 
over the lake to remain low near 29.3 throughout tuesday. this low 
lifts north into ontario wednesday morning, and lake superior 
pressures increase to 29.8 inches by wednesday midday.



lsz267-242000-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
401 am edt fri apr 24 2026

...gale warning in effect until 2 pm edt this afternoon...

.early this morning...southeast gales to 35 knots. a slight
chance of rain showers. waves 5 to 8 feet occasionally to
10 feet. 
.today...southeast gales to 40 knots diminishing to 15 to
25 knots late. a chance of rain showers through early afternoon,
then rain showers and a slight chance of thunderstorms by mid
afternoon. waves building to 6 to 9 feet occasionally to 11 feet,
then subsiding to 3 to 5 feet occasionally to 7 feet. 
.tonight...southeast winds 10 to 20 knots backing east after
midnight. a chance of rain showers. waves subsiding to calm to
2 feet. 
.saturday...southeast winds 5 to 15 knots backing east in the
afternoon, then backing north late. waves calm to 2 feet. 
.saturday night...north winds 5 to 15 knots veering east after
midnight. waves calm to 2 feet. 
.sunday...east winds 5 to 15 knots. waves calm to 2 feet. 
.sunday night...east winds 5 to 15 knots becoming southeast 10 to
20 knots after midnight. waves calm to 2 feet. 
.monday...southeast gales to 40 knots. rain showers. waves
building to 9 to 12 feet occasionally to 15 feet, then subsiding
to 7 to 10 feet occasionally to 13 feet. 
.tuesday...west gales to 40 knots. rain showers likely, then a
chance of rain showers. waves subsiding to 5 to 8 feet
occasionally to 10 feet, then building to 7 to 10 feet
occasionally to 13 feet. 

$$