fzus61 kbuf 190902
glflo 
expires:202511191600;;127097

open lake forecast for lake ontario
national weather service buffalo ny
402 am est wed nov 19 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 centered over the central great lakes 
will build over the lower great lakes wednesday, then into new 
england thursday. a 29.5 inch surface low along the southern 
shoreline of hudson bay will swing a cold front east across the 
lower great lakes friday, followed by a 30.1 inch high building over 
the ohio valley and lower great lakes saturday. a 29.5 inch low will 
then move across northern ontario into lower hudson bay on sunday, 
while sending an attendant warm front across the lake saturday night.


loz064-065-191600-
lake ontario open waters from sodus bay to the saint lawrence
river-
402 am est wed nov 19 2025

.today...north winds 10 knots or less becoming northwest. waves
1 foot or less. 
.tonight...light and variable winds. waves 1 foot or less. 
.thursday...south winds 10 knots or less becoming southeast.
waves 1 foot or less. 
.thursday night...southeast winds 5 to 15 knots becoming south
15 to 20 knots. a chance of rain showers overnight. waves 1 to
3 feet. 
.friday...southwest winds 15 to 20 knots becoming northwest 10 to
15 knots. rain showers likely during the day, then a chance of
rain showers friday night. waves 3 to 5 feet subsiding to 1 to
3 feet. 
.saturday...north winds 5 to 10 knots becoming south. waves
2 feet or less. 
.sunday...south winds 5 to 15 knots becoming west. a chance of
rain showers sunday night. waves 1 to 3 feet. 

$$

fzus61 kbuf 190902
glflo 
expires:202511191600;;127096

open lake forecast for lake ontario
national weather service buffalo ny
402 am est wed nov 19 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 centered over the central great lakes 
will build over the lower great lakes wednesday, then into new 
england thursday. a 29.5 inch surface low along the southern 
shoreline of hudson bay will swing a cold front east across the 
lower great lakes friday, followed by a 30.1 inch high building over 
the ohio valley and lower great lakes saturday. a 29.5 inch low will 
then move across northern ontario into lower hudson bay on sunday, 
while sending an attendant warm front across the lake saturday night.


loz063-191600-
lake ontario open waters from hamlin beach to sodus bay-
402 am est wed nov 19 2025

.today...north winds 10 knots or less becoming northwest. waves
1 foot or less. 
.tonight...light and variable winds. waves 1 foot or less. 
.thursday...south winds 10 knots or less becoming southeast.
waves 1 foot or less. 
.thursday night...southeast winds 5 to 15 knots becoming
southwest. a chance of showers overnight. waves 1 to 3 feet. 
.friday...southwest winds 15 to 20 knots becoming northwest 10 to
15 knots. a chance of showers during the day. waves 2 to 4 feet. 
.saturday...north winds 5 to 10 knots becoming south. waves 1 to
2 feet. 
.sunday...southwest winds 10 to 15 knots becoming west. waves
1 to 3 feet. 

$$

fzus61 kbuf 190902
glflo 
expires:202511191600;;127095

open lake forecast for lake ontario
national weather service buffalo ny
402 am est wed nov 19 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 centered over the central great lakes 
will build over the lower great lakes wednesday, then into new 
england thursday. a 29.5 inch surface low along the southern 
shoreline of hudson bay will swing a cold front east across the 
lower great lakes friday, followed by a 30.1 inch high building over 
the ohio valley and lower great lakes saturday. a 29.5 inch low will 
then move across northern ontario into lower hudson bay on sunday, 
while sending an attendant warm front across the lake saturday night.


loz062-191600-
lake ontario open waters from the niagara river to hamlin beach-
402 am est wed nov 19 2025

.today...northeast winds 5 to 10 knots becoming light and
variable. waves 1 foot or less. 
.tonight...light and variable winds. waves 1 foot or less. 
.thursday...southeast winds less than 10 knots. waves 1 foot or
less. 
.thursday night...south winds 10 knots or less becoming southwest
10 to 15 knots. a chance of showers overnight. waves 2 feet or
less. 
.friday...southwest winds 15 to 20 knots becoming northwest 5 to
15 knots. a chance of showers during the day. waves 1 to 3 feet. 
.saturday...north winds 5 to 10 knots becoming southwest. waves
1 to 2 feet. 
.sunday...southwest winds 10 to 15 knots becoming west. waves
1 to 3 feet. 

$$

fzus61 kcle 190804
glfle 
expires:202511191530;;124360

open lake forecast for lake erie
national weather service cleveland oh
304 am est wed nov 19 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...
high pressure 30.10 inches will persist over the region today
before drifting east tonight. a cold front will move east across 
lake erie friday with high pressure 30.00 inches building over the
great lakes late friday into the weekend.


lez162>164-191530-
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-
304 am est wed nov 19 2025

.today...northeast winds 5 to 10 knots. waves 2 feet or less. 
.tonight...northeast winds 10 knots or less becoming southeast.
waves 1 foot or less. 
.thursday...light and variable winds. waves 1 foot or less. 
.thursday night...south winds 10 knots or less becoming
southwest. a chance of rain overnight. waves 1 foot or less. 
.friday...west winds 5 to 10 knots becoming northeast. a chance
of rain friday night. waves 2 feet or less. 
.saturday...northeast winds 10 knots or less becoming southwest.
waves 2 feet or less. 
.sunday...southwest winds around 10 knots becoming west. waves
2 feet or less. 

$$

fzus61 kcle 190804
glfle 
expires:202511191530;;124361

open lake forecast for lake erie
national weather service cleveland oh
304 am est wed nov 19 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...
high pressure 30.10 inches will persist over the region today
before drifting east tonight. a cold front will move east across 
lake erie friday with high pressure 30.00 inches building over the
great lakes late friday into the weekend.


lez165>167-191530-
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-
304 am est wed nov 19 2025

.today...northeast winds 5 to 10 knots. waves 2 feet or less. 
.tonight...northeast winds less than 10 knots becoming southeast.
waves 1 foot or less. 
.thursday...south winds less than 10 knots. waves 1 foot or less.
.thursday night...south winds 5 to 15 knots becoming southwest. a
chance of rain overnight. waves 1 to 3 feet. 
.friday...west winds 5 to 15 knots becoming northeast. a chance
of rain. waves 1 to 3 feet. 
.saturday...northeast winds 5 to 10 knots becoming southwest.
waves 2 feet or less. 
.sunday...southwest winds 10 to 15 knots becoming west. waves
1 to 3 feet. 

$$

fzus61 kcle 190804
glfle 
expires:202511191530;;124362

open lake forecast for lake erie
national weather service cleveland oh
304 am est wed nov 19 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...
high pressure 30.10 inches will persist over the region today
before drifting east tonight. a cold front will move east across 
lake erie friday with high pressure 30.00 inches building over the
great lakes late friday into the weekend.


lez061-168-169-191530-
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-
304 am est wed nov 19 2025

.today...northeast winds 10 knots or less. waves 1 foot or less. 
.tonight...northeast winds less than 10 knots. waves 1 foot or
less. 
.thursday...south winds less than 10 knots. waves 1 foot or less.
.thursday night...south winds 10 knots or less becoming southwest
10 to 15 knots. a chance of rain overnight. waves 2 feet or less.
.friday...southwest winds 5 to 15 knots becoming north. a chance
of rain during the day. waves 1 to 3 feet. 
.saturday...northeast winds 10 knots or less becoming southwest.
waves 1 foot or less. 
.sunday...southwest winds 5 to 15 knots becoming west. waves 1 to
3 feet. 

$$

fzus63 kdtx 190824
glflh 
expires:202511191630;;125341

open lake forecast for lake huron
national weather service detroit/pontiac mi
324 am est wed nov 19 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...high pressure, 30.20 inches, moves into the great
lakes wednesday ensuring dry conditions and light winds. a weak
cold front tracks across the region thursday night, supporting
organized southwest flow and increasing rain chances.


lhz363-462>464-191630-
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-
324 am est wed nov 19 2025

.today...north winds 5 to 10 knots early in the morning becoming
light and variable. waves 2 feet or less. 
.tonight...light and variable winds becoming south 5 to 10 knots
after midnight. waves 2 feet or less. 
.thursday...southwest winds 5 to 10 knots becoming south 10 to
15 knots in the late morning and afternoon. waves 1 to 3 feet
building to 2 to 4 feet in the late morning and afternoon. 
.thursday night...south winds 10 to 15 knots becoming southwest
15 to 20 knots in the late evening and overnight. a chance of
rain. waves 3 to 5 feet. 
.friday...west winds 10 to 15 knots veering to the northwest late
in the evening. waves 3 to 5 feet. 
.saturday...north winds 5 to 10 knots backing to the south early
in the evening...then increasing to 10 to 15 knots in the late
evening and early morning. waves 1 to 3 feet. 
.sunday...southwest winds 10 to 15 knots veering to the west in
the late evening and early morning. waves 2 to 4 feet. 


$$

fzus63 kdtx 190824
glflh 
expires:202511191630;;125340

open lake forecast for lake huron
national weather service detroit/pontiac mi
324 am est wed nov 19 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...high pressure, 30.20 inches, moves into the great
lakes wednesday ensuring dry conditions and light winds. a weak
cold front tracks across the region thursday night, supporting
organized southwest flow and increasing rain chances.


lhz361-362-191630-
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-
324 am est wed nov 19 2025

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


$$

fzus63 kdtx 190824
glfsc 
expires:202511191630;;125343

lake st clair forecast
national weather service detroit/pontiac mi
324 am est wed nov 19 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...high pressure, 30.20 inches, moves into the great
lakes wednesday ensuring dry conditions and light winds. a weak
cold front tracks across the region thursday night, supporting
organized southwest flow and increasing rain chances.


lcz460-191630-
lake st clair-
324 am est wed nov 19 2025

.today...northeast winds 5 to 10 knots until late afternoon becoming
light and variable. mostly sunny until late afternoon becoming
mostly cloudy. waves 2 feet or less.
.tonight...light and variable winds. mostly cloudy this evening
becoming partly cloudy. waves nearly calm.
.thursday...light and variable winds becoming south 5 to 10 knots in
the late morning and afternoon. partly sunny. waves 2 feet or less.
.thursday night...south winds 5 to 10 knots becoming southwest 10 to
15 knots in the late evening and overnight. mostly cloudy. a chance
of light rain after midnight. waves 2 feet or less.
.friday...west winds 5 to 10 knots veering to the north in the
evening. mostly cloudy in the morning becoming partly cloudy. waves
2 feet or less.
.saturday...southeast winds 5 to 10 knots. partly cloudy. waves 2
feet or less.
.sunday...west winds 10 to 15 knots. partly cloudy. waves 2 feet or
less.

$$

fzus63 kmkx 190917
glflm 
expires:202511191630;;128827

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
317 am cst wed nov 19 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...

light northeast to northwest winds are expected early this morning
as high pressure of 30.2 inches moves into wisconsin. this high
will move east across the central portion of the lake late this
morning bringing a period of light and variable winds. by this
afternoon/evening south to southeast winds are expected behind the
exiting high and ahead of a low pressure system of 29.6 inches
developing in manitoba. this low will deepen to near 29.5 inches 
over the hudson bay by thursday afternoon. the low development and
progression will result in a southwest wind shift across lake 
michigan, with winds becoming gusty late thursday morning and 
afternoon. highest gusts are expected over the northern third of 
the waters, where 20-25 kt readings are currently forecast. gales 
are not expected, though trends will continue to be monitored. a 
cold front will cross the waters thursday night, resulting in 
northwest winds friday into saturday morning.


lmz080-669-671-673-675-777-779-870-872-874-876-878-191630-
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-
317 am cst wed nov 19 2025

sheboygan wi to pentwater mi south...

.today...east winds 10 to 15 kt becoming southeast. waves 1 to
3 ft subsiding to 1 to 2 ft. 
.tonight...southeast winds 5 to 10 kt becoming southwest. waves
1 to 2 ft. 
.thursday...southwest winds 10 to 15 kt increasing to 10 to
20 kt. waves 2 to 4 ft. 
.thursday night...west winds 10 to 20 kt becoming northwest.
chance of rain in the evening. waves 2 to 4 ft. 
.friday...northwest winds 10 to 20 kt. waves 3 to 5 ft. 
.friday night...north winds 10 to 15 kt becoming northeast. waves
1 to 3 ft. 
.saturday...southeast winds 10 to 15 kt becoming south. waves
1 to 3 ft. 
.sunday...west winds 10 to 20 kt. waves 3 to 5 ft.  

$$

fzus63 kmkx 190917
glflm 
expires:202511191630;;128826

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
317 am cst wed nov 19 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...

light northeast to northwest winds are expected early this morning
as high pressure of 30.2 inches moves into wisconsin. this high
will move east across the central portion of the lake late this
morning bringing a period of light and variable winds. by this
afternoon/evening south to southeast winds are expected behind the
exiting high and ahead of a low pressure system of 29.6 inches
developing in manitoba. this low will deepen to near 29.5 inches 
over the hudson bay by thursday afternoon. the low development and
progression will result in a southwest wind shift across lake 
michigan, with winds becoming gusty late thursday morning and 
afternoon. highest gusts are expected over the northern third of 
the waters, where 20-25 kt readings are currently forecast. gales 
are not expected, though trends will continue to be monitored. a 
cold front will cross the waters thursday night, resulting in 
northwest winds friday into saturday morning.


lmz261-362-364-366-563-565-567-868-191630-
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-
317 am cst wed nov 19 2025

sheboygan wi to pentwater mi north...

.today...west winds 5 to 10 kt becoming southwest 10 to 15 kt.
waves 1 to 2 ft. 
.tonight...southwest winds 10 to 15 kt increasing to 10 to 20 kt.
waves 2 to 4 ft. 
.thursday...southwest winds 10 to 20 kt increasing to 15 to
25 kt. waves 3 to 5 ft. 
.thursday night...west winds 15 to 25 kt becoming northwest 10 to
20 kt. waves 3 to 5 ft. 
.friday...northwest winds 10 to 20 kt. waves 2 to 4 ft. 
.friday night...northwest winds 10 to 15 kt diminishing to 5 to
10 kt. waves 1 to 2 ft. 
.saturday...southwest winds 10 to 20 kt. waves 1 to 2 ft building
to 1 to 3 ft. 
.sunday...west winds 10 to 20 kt. waves 2 to 4 ft.  

$$

fzus63 kmqt 190901
glfls 
expires:202511192100;;127022

open lake forecast for lake superior
national weather service marquette mi
401 am est wed nov 19 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...

a 30.2 inch ridge over lake superior this morning weakens to 30.0 
inches through this evening as 30.3 inch high pressure over the 
lower great lakes shifts east into new england. a 29.8 inch trough 
moves over the lake on thursday as a developing 29.7 inch low over 
northern manitoba moves into hudson bay. a 30.1 inch ridge of high 
pressure over the northern plains and upper midwest on friday moves 
over the great lakes on saturday. another 29.8 inch trough then 
moves over lake superior saturday night into sunday before 30.1 inch 
high pressure rebuilds over the great lakes early next week.



lsz264-192100-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
401 am est wed nov 19 2025

.early this morning...west winds 5 to 15 knots. waves calm to
2 feet. 
.today...southwest winds 5 to 15 knots increasing to 10 to
20 knots by mid afternoon. a slight chance of rain showers in the
afternoon. waves building to 1 to 3 feet. 
.tonight...southwest winds 10 to 20 knots increasing to 15 to
25 knots by midnight. a chance of rain showers. waves building to
3 to 5 feet occasionally to 7 feet. 
.thursday...southwest winds 15 to 25 knots veering west. rain
showers in the morning, then a chance of rain showers in the
afternoon. waves building to 3 to 6 feet occasionally to 8 feet. 
.thursday night...west winds 15 to 25 knots. waves subsiding to
3 to 6 feet occasionally to 8 feet. 
.friday...northwest winds 15 to 25 knots diminishing to 10 to
20 knots in the afternoon. waves subsiding to 1 to 3 feet. 
.friday night...northwest winds 5 to 15 knots backing southwest
after midnight. waves subsiding to calm to 2 feet. 
.saturday...southwest winds 10 to 20 knots veering west. waves
building to 2 to 4 feet. 
.sunday...west winds 15 to 25 knots diminishing to 10 to
20 knots. waves subsiding to 1 to 3 feet. 

$$

fzus63 kmqt 190901
glfls 
expires:202511192100;;127023

open lake forecast for lake superior
national weather service marquette mi
401 am est wed nov 19 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...

a 30.2 inch ridge over lake superior this morning weakens to 30.0 
inches through this evening as 30.3 inch high pressure over the 
lower great lakes shifts east into new england. a 29.8 inch trough 
moves over the lake on thursday as a developing 29.7 inch low over 
northern manitoba moves into hudson bay. a 30.1 inch ridge of high 
pressure over the northern plains and upper midwest on friday moves 
over the great lakes on saturday. another 29.8 inch trough then 
moves over lake superior saturday night into sunday before 30.1 inch 
high pressure rebuilds over the great lakes early next week.



lsz265-192100-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
401 am est wed nov 19 2025

.early this morning...west winds 5 to 15 knots. waves calm to
2 feet. 
.today...southwest winds 5 to 15 knots increasing to 10 to
20 knots by mid afternoon. waves calm to 2 feet. 
.tonight...southwest winds 10 to 20 knots increasing to 15 to
25 knots by midnight. a slight chance of rain showers. waves
building to 1 to 3 feet. 
.thursday...southwest winds 15 to 25 knots becoming west 20 to
30 knots by mid afternoon. rain showers likely. waves subsiding
to calm to 2 feet, then building to 2 to 4 feet. 
.thursday night...west winds 20 to 30 knots. a slight chance of
rain showers in the evening. waves building to 3 to 5 feet
occasionally to 7 feet, then subsiding to 2 to 4 feet. 
.friday...west winds 20 to 30 knots becoming northwest 15 to
25 knots in the afternoon. waves subsiding to calm to 2 feet. 
.friday night...northwest winds 10 to 20 knots becoming west 5 to
15 knots after midnight. waves calm to 2 feet. 
.saturday...southwest winds 10 to 20 knots becoming west 15 to
25 knots. waves calm to 2 feet. 
.sunday...west winds 15 to 25 knots. waves calm to 2 feet. 

$$

fzus63 kmqt 190901
glfls 
expires:202511192100;;127024

open lake forecast for lake superior
national weather service marquette mi
401 am est wed nov 19 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...

a 30.2 inch ridge over lake superior this morning weakens to 30.0 
inches through this evening as 30.3 inch high pressure over the 
lower great lakes shifts east into new england. a 29.8 inch trough 
moves over the lake on thursday as a developing 29.7 inch low over 
northern manitoba moves into hudson bay. a 30.1 inch ridge of high 
pressure over the northern plains and upper midwest on friday moves 
over the great lakes on saturday. another 29.8 inch trough then 
moves over lake superior saturday night into sunday before 30.1 inch 
high pressure rebuilds over the great lakes early next week.



lsz266-192100-
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 est wed nov 19 2025

.early this morning...west winds 5 to 15 knots. waves calm to
2 feet. 
.today...west winds 5 to 15 knots backing southwest by late
morning, then increasing to 10 to 20 knots by mid afternoon.
waves calm to 2 feet. 
.tonight...southwest winds 10 to 20 knots increasing to 15 to
25 knots by midnight. a slight chance of rain showers. waves
building to 3 to 5 feet occasionally to 7 feet. 
.thursday...southwest winds 15 to 25 knots increasing to 20 to
30 knots by late morning, then becoming west 15 to 25 knots by
mid afternoon. rain showers. waves building to 3 to 6 feet
occasionally to 8 feet. 
.thursday night...west winds 15 to 25 knots increasing to 20 to
30 knots after midnight. a chance of rain showers in the evening.
waves building to 4 to 7 feet occasionally to 9 feet. 
.friday...northwest winds 20 to 30 knots diminishing to 15 to
25 knots in the afternoon. a chance of rain showers. waves
subsiding to 3 to 6 feet occasionally to 8 feet. 
.friday night...northwest winds 10 to 20 knots becoming west 5 to
15 knots after midnight. waves subsiding to calm to 2 feet. 
.saturday...south winds 10 to 20 knots becoming southwest 15 to
25 knots. a chance of rain showers. waves building to 2 to
4 feet. 
.sunday...west winds 15 to 25 knots diminishing to 10 to
20 knots. a chance of rain showers. waves 2 to 4 feet. 

$$

fzus63 kmqt 190901
glfls 
expires:202511192100;;127025

open lake forecast for lake superior
national weather service marquette mi
401 am est wed nov 19 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...

a 30.2 inch ridge over lake superior this morning weakens to 30.0 
inches through this evening as 30.3 inch high pressure over the 
lower great lakes shifts east into new england. a 29.8 inch trough 
moves over the lake on thursday as a developing 29.7 inch low over 
northern manitoba moves into hudson bay. a 30.1 inch ridge of high 
pressure over the northern plains and upper midwest on friday moves 
over the great lakes on saturday. another 29.8 inch trough then 
moves over lake superior saturday night into sunday before 30.1 inch 
high pressure rebuilds over the great lakes early next week.



lsz267-192100-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
401 am est wed nov 19 2025

.early this morning...west winds 5 to 15 knots. waves calm to
2 feet. 
.today...west winds 10 to 20 knots backing southwest. waves calm
to 2 feet. 
.tonight...southwest winds 10 to 20 knots increasing to 15 to
25 knots by midnight. a slight chance of rain showers after
midnight. waves building to 3 to 5 feet occasionally to 7 feet. 
.thursday...southwest winds 15 to 25 knots increasing to 20 to
30 knots. rain showers. waves building to 3 to 6 feet
occasionally to 8 feet. 
.thursday night...west winds 20 to 30 knots. rain showers likely
in the evening, then a slight chance of rain showers after
midnight. waves building to 4 to 7 feet occasionally to 9 feet. 
.friday...west winds 20 to 30 knots veering northwest in the
afternoon. a chance of rain showers. waves building to 5 to
8 feet occasionally to 10 feet, then subsiding to 3 to 6 feet
occasionally to 8 feet. 
.friday night...northwest winds 10 to 20 knots. waves subsiding
to calm to 2 feet. 
.saturday...south winds 10 to 20 knots becoming southwest 15 to
25 knots. a chance of rain showers. waves building to 2 to
4 feet. 
.sunday...west winds 15 to 25 knots. a chance of rain showers.
waves 2 to 4 feet. 

$$

fzus63 kmqt 190901
glfls 
expires:202511192100;;127020

open lake forecast for lake superior
national weather service marquette mi
401 am est wed nov 19 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...

a 30.2 inch ridge over lake superior this morning weakens to 30.0 
inches through this evening as 30.3 inch high pressure over the 
lower great lakes shifts east into new england. a 29.8 inch trough 
moves over the lake on thursday as a developing 29.7 inch low over 
northern manitoba moves into hudson bay. a 30.1 inch ridge of high 
pressure over the northern plains and upper midwest on friday moves 
over the great lakes on saturday. another 29.8 inch trough then 
moves over lake superior saturday night into sunday before 30.1 inch 
high pressure rebuilds over the great lakes early next week.



lsz162-192100-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
401 am est wed nov 19 2025 /301 am cst wed nov 19 2025/

.early this morning...southwest winds 5 to 15 knots. waves calm
to 2 feet. 
.today...southwest winds 5 to 15 knots increasing to 10 to
20 knots. a slight chance of rain showers in the afternoon. waves
building to 1 to 3 feet. 
.tonight...southwest winds 10 to 20 knots increasing to 15 to
25 knots by midnight, then diminishing to 10 to 20 knots late. a
chance of rain showers in the evening, then rain showers likely
after midnight. waves building to 3 to 5 feet occasionally to
7 feet. 
.thursday...southwest winds 15 to 25 knots veering west. a chance
of rain showers in the morning. waves subsiding to 1 to 3 feet. 
.thursday night...west winds 15 to 25 knots diminishing to 10 to
20 knots after midnight. waves building to 2 to 4 feet, then
subsiding to 1 to 3 feet. 
.friday...west winds 10 to 20 knots diminishing to 5 to 15 knots
in the afternoon. waves subsiding to calm to 2 feet. 
.friday night...northwest winds 5 to 15 knots backing south after
midnight. waves calm to 2 feet. 
.saturday...southwest winds 10 to 20 knots veering west. waves
calm to 2 feet. 
.sunday...west winds 10 to 20 knots. waves calm to 2 feet. 

$$

fzus63 kmqt 190901
glfls 
expires:202511192100;;127021

open lake forecast for lake superior
national weather service marquette mi
401 am est wed nov 19 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...

a 30.2 inch ridge over lake superior this morning weakens to 30.0 
inches through this evening as 30.3 inch high pressure over the 
lower great lakes shifts east into new england. a 29.8 inch trough 
moves over the lake on thursday as a developing 29.7 inch low over 
northern manitoba moves into hudson bay. a 30.1 inch ridge of high 
pressure over the northern plains and upper midwest on friday moves 
over the great lakes on saturday. another 29.8 inch trough then 
moves over lake superior saturday night into sunday before 30.1 inch 
high pressure rebuilds over the great lakes early next week.



lsz263-192100-
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 est wed nov 19 2025

.early this morning...southwest winds 5 to 15 knots. waves calm
to 2 feet. 
.today...southwest winds 5 to 15 knots increasing to 10 to
20 knots. a slight chance of rain showers in the afternoon. waves
building to 1 to 3 feet. 
.tonight...southwest winds 10 to 20 knots increasing to 15 to
25 knots by midnight. a chance of rain showers. waves building to
3 to 5 feet occasionally to 7 feet. 
.thursday...southwest winds 15 to 25 knots veering west. rain
showers likely in the morning, then a slight chance of rain
showers in the afternoon. waves building to 3 to 6 feet
occasionally to 8 feet. 
.thursday night...west winds 15 to 25 knots. waves subsiding to
2 to 4 feet, then building to 3 to 6 feet occasionally to 8 feet.
.friday...northwest winds 15 to 25 knots diminishing to 10 to
20 knots in the afternoon. waves subsiding to calm to 2 feet. 
.friday night...northwest winds 5 to 15 knots backing southwest
after midnight. waves calm to 2 feet. 
.saturday...southwest winds 10 to 20 knots veering west. waves
building to 1 to 3 feet. 
.sunday...west winds 15 to 25 knots diminishing to 10 to
20 knots. waves building to 2 to 4 feet, then subsiding to calm
to 2 feet. 

$$