fzus61 kbuf 010801
glflo 
expires:202505011500;;759886

open lake forecast for lake ontario
national weather service buffalo ny
401 am edt thu may 1 2025

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 30.3 inch high will depart towards new england 
today. meanwhile a 29.5 inch low will track just north of the lake 
tonight and into central quebec on friday with its corresponding 
cold front crossing the lake early friday. this front will stall 
along the eastern seaboard through the weekend and into monday with 
several weak waves upon it. to the north a 30.4 inch area of surface 
high pressure will slowly eases its way from the upper great lakes 
to quebec.


loz062-011500-
lake ontario open waters from the niagara river to hamlin beach-
401 am edt thu may 1 2025

.today...east winds 10 to 15 knots increasing to 15 to 20 knots.
a chance of showers early this afternoon. showers with
thunderstorms likely late. some thunderstorms may produce gusty
winds late. waves 1 to 3 feet building to 3 to 5 feet. 
.tonight...east winds 15 to 20 knots becoming southwest. showers
with thunderstorms likely in the evening, then showers likely
after midnight. a chance of showers late. some thunderstorms may
produce gusty winds in the evening. waves 3 to 5 feet subsiding
to 2 to 4 feet. 
.friday...southwest winds 15 to 20 knots becoming west. a chance
of showers. waves 2 to 4 feet building to 3 to 5 feet. 
.friday night...west winds 5 to 15 knots becoming northwest. a
chance of showers. waves 2 to 4 feet subsiding to 1 to 3 feet. 
.saturday...northwest winds 5 to 10 knots. showers likely during
the day, then a chance of showers saturday night. waves 1 foot or
less. 
.sunday...north winds 5 to 15 knots becoming northeast 15 to
20 knots. waves 1 to 2 feet building to 2 to 4 feet. 
.monday...east winds 15 to 20 knots diminishing to 10 to
15 knots. a chance of showers. waves 3 to 5 feet subsiding to
2 to 3 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kbuf 010801
glflo 
expires:202505011500;;759887

open lake forecast for lake ontario
national weather service buffalo ny
401 am edt thu may 1 2025

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 30.3 inch high will depart towards new england 
today. meanwhile a 29.5 inch low will track just north of the lake 
tonight and into central quebec on friday with its corresponding 
cold front crossing the lake early friday. this front will stall 
along the eastern seaboard through the weekend and into monday with 
several weak waves upon it. to the north a 30.4 inch area of surface 
high pressure will slowly eases its way from the upper great lakes 
to quebec.


loz063>065-011500-
lake ontario open waters from hamlin beach to the saint lawrence
river-
401 am edt thu may 1 2025

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

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 010807
glfle 
expires:202505011415;;760456

open lake forecast for lake erie
national weather service cleveland oh
407 am edt thu may 1 2025

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 warm front will lift northeast across lake erie today as low 
pressure 29.60 inches moves northeastward across the central great
lakes. a cold front will then move southeast across the lake
friday. low pressure 29.80 inches lingers across the ohio valley
through the weekend and into monday.


lez165>167-011415-
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-
407 am edt thu may 1 2025

.today...east winds 10 to 15 knots becoming south. a slight
chance of showers and thunderstorms early, then showers likely
with a chance of thunderstorms late this morning. showers with
thunderstorms likely this afternoon. some thunderstorms may
produce gusty winds this afternoon. waves 1 to 3 feet. 
.tonight...south winds 10 to 15 knots becoming southwest 15 to
20 knots. showers likely with a chance of thunderstorms in the
evening, then a chance of showers after midnight. some
thunderstorms may produce gusty winds early. waves 2 to 4 feet. 
.friday...southwest winds 10 to 15 knots becoming west. a chance
of showers in the morning, then showers likely in the afternoon.
waves 2 to 4 feet subsiding to 1 to 3 feet. 
.friday night...west winds 5 to 10 knots becoming north. a chance
of showers and thunderstorms in the evening, then a chance of
showers overnight. waves 1 to 2 feet. 
.saturday...north winds 10 to 15 knots becoming northeast. a
chance of showers during the day. waves 1 to 2 feet. 
.sunday...northeast winds 10 to 15 knots. a chance of showers.
waves 1 to 3 feet. 
.monday...east winds 10 to 15 knots becoming southeast. a chance
of showers. waves 1 to 3 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 010807
glfle 
expires:202505011415;;760455

open lake forecast for lake erie
national weather service cleveland oh
407 am edt thu may 1 2025

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 warm front will lift northeast across lake erie today as low 
pressure 29.60 inches moves northeastward across the central great
lakes. a cold front will then move southeast across the lake
friday. low pressure 29.80 inches lingers across the ohio valley
through the weekend and into monday.


lez162>164-011415-
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-
407 am edt thu may 1 2025

.today...east winds 10 to 15 knots becoming southwest 15 to
20 knots. a chance of showers and thunderstorms early, then
showers likely with a chance of thunderstorms. a chance of
showers and thunderstorms late. some thunderstorms may produce
gusty winds early this afternoon. waves 1 to 3 feet. 
.tonight...southwest winds 15 to 20 knots diminishing to 10 to
15 knots. showers likely with a chance of thunderstorms early,
then a chance of showers and thunderstorms late in the evening. a
chance of showers after midnight. waves 1 to 3 feet. 
.friday...southwest winds 5 to 15 knots becoming west. a chance
of showers. waves 1 to 2 feet. 
.friday night...west winds 5 to 10 knots becoming north. a chance
of showers. waves 1 to 2 feet. 
.saturday...north winds 10 to 15 knots. a chance of showers
during the day. waves 1 to 2 feet. 
.sunday...northeast winds 10 to 15 knots. a chance of showers.
waves 1 to 2 feet. 
.monday...northeast winds 10 to 15 knots becoming east. a chance
of showers. waves 2 feet or less. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 010807
glfle 
expires:202505011415;;760457

open lake forecast for lake erie
national weather service cleveland oh
407 am edt thu may 1 2025

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 warm front will lift northeast across lake erie today as low 
pressure 29.60 inches moves northeastward across the central great
lakes. a cold front will then move southeast across the lake
friday. low pressure 29.80 inches lingers across the ohio valley
through the weekend and into monday.


lez061-168-169-011415-
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-
407 am edt thu may 1 2025

.today...east winds 10 to 15 knots becoming southeast. a slight
chance of showers and thunderstorms this morning, then a chance
of showers and thunderstorms early this afternoon. showers with
thunderstorms likely late. some thunderstorms may produce gusty
winds this afternoon. waves 1 to 3 feet. 
.tonight...southeast winds 10 to 15 knots becoming southwest
15 to 20 knots. showers with thunderstorms likely early, then
showers likely with a chance of thunderstorms late in the
evening. a chance of showers after midnight. some thunderstorms
may produce gusty winds in the evening. waves 1 to 3 feet
building to 2 to 4 feet. 
.friday...southwest winds 15 to 20 knots diminishing to 10 to
15 knots. a chance of showers in the morning, then showers likely
in the afternoon. waves 2 to 4 feet subsiding to 1 to 3 feet. 
.friday night...southwest winds 5 to 10 knots becoming north. a
chance of showers. waves 1 to 2 feet. 
.saturday...north winds 5 to 10 knots becoming northeast. a
chance of showers during the day. waves 1 to 2 feet. 
.sunday...northeast winds 10 to 15 knots. a chance of showers.
waves 1 to 2 feet. 
.monday...northeast winds 10 to 15 knots becoming east. a chance
of showers. waves 1 to 2 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus63 kdtx 010755
glflh 
expires:202505011600;;759545

open lake forecast for lake huron
national weather service detroit/pontiac mi
355 am edt thu may 1 2025

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...deepening low pressure, dropping to around 29.50
inches, lifts directly over the central great lakes today leading
to widespread showers. a few thunderstorms, which could be
strong, are possible this evening mainly focused towards the
southern great lakes. a weak secondary cold front, 29.70 inches,
drops through friday and is quickly followed by high pressure of
30.00 inches.


lhz362-363-011600-
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-
355 am edt thu may 1 2025

.today...east winds 5 to 10 knots increasing to 15 to 20 knots.
rain. waves 1 to 3 feet building to 3 to 5 feet late in the
afternoon. 
.tonight...northeast winds 15 to 20 knots becoming north 10 to
15 knots in the late evening and early morning...then backing to
the west early in the morning. rain likely. waves 4 to 6 feet.
waves occasionally around 8 feet. 
.friday...west winds 10 to 15 knots becoming southwest 5 to
10 knots in the late morning and afternoon. waves 2 to 4 feet
subsiding to 1 to 3 feet in the late morning and afternoon. 
.friday night...west winds 5 to 10 knots veering to the north in
the late evening and early morning...then backing to the
northwest after midnight. waves 1 to 3 feet. 
.saturday...northwest winds 10 to 15 knots. waves 2 feet or less.
.sunday...north winds 5 to 10 knots becoming northeast 10 to
15 knots in the late evening and early morning. waves 2 feet or
less. 
.monday...northeast winds 10 to 15 knots. waves 1 to 3 feet. 


$$

fzus63 kdtx 010755
glflh 
expires:202505011600;;759546

open lake forecast for lake huron
national weather service detroit/pontiac mi
355 am edt thu may 1 2025

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...deepening low pressure, dropping to around 29.50
inches, lifts directly over the central great lakes today leading
to widespread showers. a few thunderstorms, which could be
strong, are possible this evening mainly focused towards the
southern great lakes. a weak secondary cold front, 29.70 inches,
drops through friday and is quickly followed by high pressure of
30.00 inches.


lhz462>464-011600-
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-
355 am edt thu may 1 2025

.today...east winds 5 to 10 knots increasing to 10 to 15 knots in
the afternoon. rain. waves 1 to 3 feet building to 2 to 4 feet
late in the afternoon. 
.tonight...east winds 10 to 15 knots veering to the southwest
after midnight. rain and a chance of thunderstorms in the
evening. waves 2 to 4 feet. 
.friday...west winds 10 to 15 knots becoming southwest 5 to
10 knots in the late morning and afternoon. waves 1 to 3 feet. 
.friday night...west winds 5 to 10 knots veering to the north in
the late evening and overnight. waves 2 feet or less. 
.saturday...north winds 10 to 15 knots decreasing to 5 to
10 knots late in the evening. waves 1 to 3 feet. 
.sunday...north winds 5 to 10 knots increasing to 10 to 15 knots.
waves 1 to 3 feet. 
.monday...northeast winds 10 to 15 knots. a chance of rain. waves
1 to 3 feet. 


$$

fzus63 kdtx 010755
glfsc 
expires:202505011600;;759542

lake st clair forecast
national weather service detroit/pontiac mi
355 am edt thu may 1 2025

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...deepening low pressure, dropping to around 29.50
inches, lifts directly over the central great lakes today leading
to showers. a few thunderstorms, which could be
strong, are possible this evening mainly focused towards the
southern great lakes. a weak secondary cold front, 29.70 inches,
drops through friday and is quickly followed by high pressure of
30.00 inches.


lcz460-011600-
lake st clair-
355 am edt thu may 1 2025

.today...southeast winds 10 to 15 knots veering to the south late in
the afternoon. light rain in the morning...then light rain and a
chance of thunderstorms in the afternoon. waves 2 feet or less.
.tonight...southwest winds 10 to 15 knots. mostly cloudy with a
chance of light rain and thunderstorms in the evening...then partly
cloudy after midnight. waves 2 feet or less.
.friday...west winds 10 to 15 knots becoming southwest 5 to 10 knots
in the late morning and afternoon. partly sunny. waves 2 feet or
less.
.friday night...northwest winds 5 to 10 knots veering to the north
after midnight. mostly cloudy. a chance of light rain after
midnight. waves 2 feet or less.
.saturday...north winds 5 to 10 knots increasing to 10 to 15 knots
in the afternoon and evening. mostly cloudy becoming partly cloudy.
waves 2 feet or less.
.sunday...northeast winds 10 to 15 knots. partly cloudy. a chance of
rain. waves 2 feet or less.
.monday...east winds 10 to 15 knots. partly cloudy. a chance of
rain. waves 2 feet or less.

$$

fzus63 kdtx 010755
glflh 
expires:202505011600;;759544

open lake forecast for lake huron
national weather service detroit/pontiac mi
355 am edt thu may 1 2025

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...deepening low pressure, dropping to around 29.50
inches, lifts directly over the central great lakes today leading
to widespread showers. a few thunderstorms, which could be
strong, are possible this evening mainly focused towards the
southern great lakes. a weak secondary cold front, 29.70 inches,
drops through friday and is quickly followed by high pressure of
30.00 inches.


lhz361-011600-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
355 am edt thu may 1 2025

.today...east winds 10 to 15 knots. rain. waves 1 to 3 feet
building to 2 to 4 feet in the afternoon. 
.tonight...northeast winds 10 to 15 knots backing to the north
after midnight. rain. waves 2 to 4 feet. 
.friday...north winds 5 to 10 knots backing to the west in the
late morning and afternoon. waves 1 to 3 feet. 
.friday night...northwest winds 5 to 10 knots. waves 1 to 3 feet.
.saturday...northwest winds 5 to 10 knots backing to the west
late in the afternoon. waves 2 feet or less. 
.sunday...northwest winds 5 to 10 knots veering to the north.
waves 2 feet or less. 
.monday...east winds 10 to 15 knots decreasing to 5 to 10 knots
in the late evening and early morning. waves 1 to 3 feet. 


$$

fzus63 kmkx 010801
glflm 
expires:202505011530;;759929

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
301 am cdt thu may 1 2025

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 around 29.6 inches will slide across northern
illinois this morning and across central lower michigan this
afternoon. another weaker low pressure system will cross the 
upper great lakes on friday, and a subtle cold front will also 
drop through. high pressure around 30.1 inches will then return 
for the weekend. 

easterly winds will become southerly over the southern third of 
the lake this morning. otherwise expect northerly winds through 
early next week.


lmz261-362-364-366-563-565-567-868-011530-
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-
301 am cdt thu may 1 2025

sheboygan wi to pentwater mi north...

.today...east winds 10 to 20 kt increasing to 15 to 25 kt late
this morning, then becoming northeast early this afternoon and
increasing to 30 kt late. rain showers. waves 3 to 5 ft building
to 4 to 6 ft occasionally to 8 ft. 
.tonight...north winds to 30 kt diminishing to 10 to 20 kt late
in the evening, then becoming north 10 to 20 kt after midnight
diminishing to 10 to 15 kt late. slight chance of rain showers.
waves 4 to 6 ft occasionally to 8 ft subsiding to 2 to 4 ft. 
.friday...north winds 10 to 15 kt becoming northwest. chance of
rain showers. waves 1 to 3 ft. 
.friday night...north winds 10 to 20 kt. waves 1 to 3 ft. 
.saturday...north winds 10 to 20 kt becoming northwest. waves
1 to 3 ft. 
.saturday night...west winds 10 to 15 kt becoming northwest 5 to
10 kt. waves 1 to 2 ft. 
.sunday...north winds 10 to 15 kt becoming northeast. waves 1 to
2 ft. 
.monday...east winds 10 to 20 kt becoming northeast. waves 1 to
3 ft.  

$$

fzus63 kmkx 010801
glflm 
expires:202505011530;;759930

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
301 am cdt thu may 1 2025

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 around 29.6 inches will slide across northern
illinois this morning and across central lower michigan this
afternoon. another weaker low pressure system will cross the 
upper great lakes on friday, and a subtle cold front will also 
drop through. high pressure around 30.1 inches will then return 
for the weekend. 

easterly winds will become southerly over the southern third of 
the lake this morning. otherwise expect northerly winds through 
early next week.


lmz080-669-671-673-675-777-779-870-872-874-876-878-011530-
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-
301 am cdt thu may 1 2025

sheboygan wi to pentwater mi south...

.today...east winds 15 to 25 kt backing to northwest. rain
showers and slight chance of thunderstorms this morning, then
chance of rain showers and slight chance of thunderstorms this
afternoon. waves 4 to 6 ft occasionally to 8 ft. 
.tonight...northwest winds 10 to 20 kt veering to northeast 10 to
15 kt. slight chance of rain showers in the evening, then chance
of rain showers overnight. waves 3 to 5 ft subsiding to 1 to
3 ft. 
.friday...north winds 10 to 15 kt. chance of rain showers in the
morning. waves 1 to 3 ft. 
.friday night...north winds 10 to 15 kt. waves 1 to 3 ft. 
.saturday...north winds 10 to 20 kt. waves 3 to 5 ft. 
.saturday night...north winds 10 to 20 kt diminishing to 10 to
15 kt. waves 2 to 4 ft subsiding to 1 to 3 ft. 
.sunday...north winds 10 to 15 kt increasing to 10 to 20 kt.
waves 1 to 3 ft. 
.monday...northeast winds 10 to 15 kt. chance of showers. waves
1 to 3 ft.  

$$

fzus63 kmqt 010707
glfls 
expires:202505011515;;757591

open lake forecast for lake superior
national weather service marquette mi
307 am edt thu may 1 2025

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...29.7 inch low pressure over the mid mississippi valley 
will head northeast and deepen to 29.5 inches near houghton lake 
michigan by this evening. the low will track into southwestern 
quebec friday morning while 30.0 inch ridging gradually builds 
back over lake superior. this ridge builds to 30.2 inches as it 
slowly shifts across the great lakes basin this weekend. on 
monday, the ridge weakens to 30.1 inches over lake superior as low
pressure at 29.7 inches organizes over the dakotas.


lsz266-011515-
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-
307 am edt thu may 1 2025

.early this morning...south winds 10 to 20 knots. waves 2 to
4 feet. 
.today...southeast winds 10 to 20 knots backing east in the
afternoon, then veering southeast late. a slight chance of rain
showers by mid afternoon. waves subsiding to 1 to 3 feet. 
.tonight...east winds 10 to 20 knots backing north after
midnight. a chance of rain showers. waves building to 3 to 6 feet
occasionally to 8 feet. 
.friday...north winds 10 to 20 knots increasing to 15 to 25 knots
in the afternoon. rain showers, possibly mixed with snow through
early afternoon, then a chance of rain and snow showers by mid
afternoon. waves subsiding to 2 to 4 feet. 
.friday night...northwest winds 10 to 20 knots. waves subsiding
to calm to 2 feet. 
.saturday...west winds 10 to 20 knots becoming southwest 5 to
15 knots by mid afternoon. waves calm to 2 feet. 
.saturday night...south winds 5 to 15 knots backing east after
midnight. waves calm to 2 feet. 
.sunday...east winds 5 to 15 knots becoming southeast 10 to
20 knots. waves calm to 2 feet. 
.monday...southeast winds 10 to 20 knots veering south. waves
building to 1 to 3 feet. 

$$

fzus63 kmqt 010707
glfls 
expires:202505011515;;757589

open lake forecast for lake superior
national weather service marquette mi
307 am edt thu may 1 2025

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...29.7 inch low pressure over the mid mississippi valley 
will head northeast and deepen to 29.5 inches near houghton lake 
michigan by this evening. the low will track into southwestern 
quebec friday morning while 30.0 inch ridging gradually builds 
back over lake superior. this ridge builds to 30.2 inches as it 
slowly shifts across the great lakes basin this weekend. on 
monday, the ridge weakens to 30.1 inches over lake superior as low
pressure at 29.7 inches organizes over the dakotas.


lsz264-011515-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
307 am edt thu may 1 2025

.early this morning...south winds 5 to 15 knots. waves 2 to
4 feet. 
.today...southeast winds 5 to 15 knots backing east in the
afternoon. waves subsiding to 1 to 3 feet. 
.tonight...northeast winds 10 to 20 knots. a chance of rain
showers. snow showers likely after midnight. waves building to
3 to 6 feet occasionally to 8 feet. 
.friday...north winds 10 to 20 knots diminishing to 5 to 15 knots
late. snow showers, possibly mixed with rain through early
afternoon, then a slight chance of snow showers by mid afternoon.
waves subsiding to 1 to 3 feet. 
.friday night...northwest winds 5 to 15 knots backing west after
midnight. waves subsiding to calm to 2 feet. 
.saturday...southwest winds 5 to 15 knots increasing to 10 to
20 knots by mid afternoon. waves building to 1 to 3 feet. 
.saturday night...southwest winds 5 to 15 knots backing east
after midnight. waves subsiding to calm to 2 feet. 
.sunday...east winds 5 to 15 knots veering southeast. waves calm
to 2 feet. 
.monday...south winds 5 to 15 knots. waves building to 1 to
3 feet. 

$$

fzus63 kmqt 010707
glfls 
expires:202505011515;;757587

open lake forecast for lake superior
national weather service marquette mi
307 am edt thu may 1 2025

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...29.7 inch low pressure over the mid mississippi valley 
will head northeast and deepen to 29.5 inches near houghton lake 
michigan by this evening. the low will track into southwestern 
quebec friday morning while 30.0 inch ridging gradually builds 
back over lake superior. this ridge builds to 30.2 inches as it 
slowly shifts across the great lakes basin this weekend. on 
monday, the ridge weakens to 30.1 inches over lake superior as low
pressure at 29.7 inches organizes over the dakotas.


lsz162-011515-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
307 am edt thu may 1 2025 /207 am cdt thu may 1 2025/

.early this morning...northeast winds 5 to 15 knots. waves calm
to 2 feet. 
.today...northeast winds 5 to 15 knots increasing to 10 to
20 knots in the afternoon. a slight chance of rain showers by mid
afternoon. waves building to 2 to 4 feet. 
.tonight...northeast winds 10 to 20 knots backing north late. a
chance of rain showers through midnight, then rain showers,
possibly mixed with snow after midnight. waves building to 3 to
6 feet occasionally to 8 feet. 
.friday...north winds 10 to 20 knots becoming northeast 5 to
15 knots in the afternoon, then veering south late. snow showers
likely, possibly mixed with rain showers through early afternoon.
waves subsiding to 1 to 3 feet. 
.friday night...southwest winds 5 to 15 knots. waves subsiding to
calm to 2 feet. 
.saturday...southwest winds 5 to 15 knots increasing to 10 to
20 knots by mid afternoon. waves calm to 2 feet. 
.saturday night...southwest winds 10 to 20 knots veering north
after midnight. waves calm to 2 feet. 
.sunday...northeast winds 10 to 20 knots diminishing to 5 to
15 knots. waves calm to 2 feet. 
.monday...east winds 5 to 15 knots becoming west 10 to 20 knots.
waves calm to 2 feet. 

$$

fzus63 kmqt 010707
glfls 
expires:202505011515;;757588

open lake forecast for lake superior
national weather service marquette mi
307 am edt thu may 1 2025

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...29.7 inch low pressure over the mid mississippi valley 
will head northeast and deepen to 29.5 inches near houghton lake 
michigan by this evening. the low will track into southwestern 
quebec friday morning while 30.0 inch ridging gradually builds 
back over lake superior. this ridge builds to 30.2 inches as it 
slowly shifts across the great lakes basin this weekend. on 
monday, the ridge weakens to 30.1 inches over lake superior as low
pressure at 29.7 inches organizes over the dakotas.


lsz263-011515-
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-
307 am edt thu may 1 2025

.early this morning...south winds 5 to 15 knots. waves calm to
2 feet. 
.today...east winds 5 to 15 knots backing northeast in the
afternoon, then increasing to 10 to 20 knots late. a slight
chance of rain showers by mid afternoon. waves building to 2 to
4 feet. 
.tonight...northeast winds 10 to 20 knots. a chance of rain
showers through midnight, then rain showers, possibly mixed with
snow 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...north winds 10 to 20 knots diminishing to 5 to 15 knots
late. rain showers likely through early afternoon. a chance of
snow showers. waves subsiding to 1 to 3 feet. 
.friday night...west winds 5 to 15 knots backing southwest after
midnight. waves subsiding to calm to 2 feet. 
.saturday...southwest winds 5 to 15 knots increasing to 10 to
20 knots by mid afternoon. waves building to 1 to 3 feet. 
.saturday night...southwest winds 5 to 15 knots backing south
after midnight. waves subsiding to calm to 2 feet. 
.sunday...northeast winds 5 to 15 knots veering east. waves calm
to 2 feet. 
.monday...south winds 5 to 15 knots veering southwest. waves
building to 1 to 3 feet, then subsiding to calm to 2 feet. 

$$

fzus63 kmqt 010707
glfls 
expires:202505011515;;757590

open lake forecast for lake superior
national weather service marquette mi
307 am edt thu may 1 2025

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...29.7 inch low pressure over the mid mississippi valley 
will head northeast and deepen to 29.5 inches near houghton lake 
michigan by this evening. the low will track into southwestern 
quebec friday morning while 30.0 inch ridging gradually builds 
back over lake superior. this ridge builds to 30.2 inches as it 
slowly shifts across the great lakes basin this weekend. on 
monday, the ridge weakens to 30.1 inches over lake superior as low
pressure at 29.7 inches organizes over the dakotas.


lsz265-011515-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
307 am edt thu may 1 2025

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

$$

fzus63 kmqt 010707
glfls 
expires:202505011515;;757592

open lake forecast for lake superior
national weather service marquette mi
307 am edt thu may 1 2025

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...29.7 inch low pressure over the mid mississippi valley 
will head northeast and deepen to 29.5 inches near houghton lake 
michigan by this evening. the low will track into southwestern 
quebec friday morning while 30.0 inch ridging gradually builds 
back over lake superior. this ridge builds to 30.2 inches as it 
slowly shifts across the great lakes basin this weekend. on 
monday, the ridge weakens to 30.1 inches over lake superior as low
pressure at 29.7 inches organizes over the dakotas.


lsz267-011515-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
307 am edt thu may 1 2025

.early this morning...southeast winds 10 to 20 knots. waves 2 to
4 feet subsiding to 1 to 3 feet. 
.today...southeast winds 10 to 20 knots. a chance of rain showers
by mid afternoon. waves building to 2 to 4 feet, then subsiding
to calm to 2 feet. 
.tonight...northeast winds 10 to 20 knots backing north after
midnight. a chance of rain showers. waves calm to 2 feet. 
.friday...north winds 10 to 20 knots backing northwest late. a
chance of rain showers through early afternoon, then rain showers
likely by mid afternoon. waves building to 1 to 3 feet, then
subsiding to calm to 2 feet. 
.friday night...north winds 10 to 20 knots. waves subsiding to
calm to 2 feet. 
.saturday...northwest winds 10 to 20 knots backing west by mid
afternoon. waves calm to 2 feet. 
.saturday night...west winds 5 to 15 knots veering north after
midnight. waves calm to 2 feet. 
.sunday...northeast winds 5 to 15 knots becoming southeast 10 to
20 knots. waves calm to 2 feet. 
.monday...southeast winds 10 to 20 knots. waves building to 1 to
3 feet, then subsiding to calm to 2 feet. 

$$