fzus63 kdtx 181947
glflh 
expires:202106190830;;471391

open lake forecast for lake huron
national weather service detroit/pontiac mi
347 pm edt fri jun 18 2021

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...potential exists for shower/thunderstorm 
redevelopment across the southern great lakes this evening ahead 
of an advancing cold front. winds shift to the northwest behind 
the frontal passage overnight, with dry conditions expected this 
weekend as high pressure returns aside from shower/thunderstorm 
chances across the southern marine zones again tomorrow.


lhz361-190830-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
347 pm edt fri jun 18 2021

.tonight...west winds 5 to 10 knots. waves 2 feet or less. 
.saturday...west winds 5 to 10 knots becoming northwest 10 to
15 knots in the late morning and early afternoon...then becoming
west 5 to 10 knots late in the afternoon. waves 1 to 3 feet. 
.saturday night...northwest winds 5 to 10 knots. waves 2 feet or
less. 
.sunday...west winds 5 to 10 knots veering to the east early in
the afternoon. a chance of showers in the afternoon. waves 2 feet
or less. 
.sunday night...southeast winds 5 to 10 knots increasing to 10 to
15 knots in the late evening and overnight. showers. a chance of
thunderstorms after midnight. waves 1 to 3 feet building to 2 to
4 feet after midnight. 
.monday...south winds 10 to 15 knots becoming northwest 15 to
20 knots. showers in the morning. a chance of thunderstorms. 
waves 3 to 5 feet. 
.tuesday...northwest winds 15 to 20 knots becoming west 5 to
10 knots in the late evening and early morning. waves 2 to 4 feet
subsiding to 1 to 3 feet. 
.wednesday...southwest winds 10 to 15 knots decreasing to 5 to
10 knots in the late morning and early afternoon...then backing
to the south until early morning. a chance of showers. waves
2 feet or less. 


$$

fzus63 kdtx 181947
glflh 
expires:202106190830;;471392

open lake forecast for lake huron
national weather service detroit/pontiac mi
347 pm edt fri jun 18 2021

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...potential exists for shower/thunderstorm 
redevelopment across the southern great lakes this evening ahead 
of an advancing cold front. winds shift to the northwest behind 
the frontal passage overnight, with dry conditions expected this 
weekend as high pressure returns aside from shower/thunderstorm 
chances across the southern marine zones again tomorrow.


lhz362-363-190830-
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-
347 pm edt fri jun 18 2021

.tonight...southeast winds 5 to 10 knots veering to the southwest
in the late evening and overnight. waves 2 to 4 feet subsiding to
1 to 3 feet in the late evening and overnight. 
.saturday...southwest winds 5 to 10 knots. waves 1 to 3 feet. 
.saturday night...north winds 5 to 10 knots. waves 1 to 3 feet. 
.sunday...north winds 5 to 10 knots early in the morning becoming
light and variable...then becoming east 5 to 10 knots early in
the afternoon. waves 2 feet or less. 
.sunday night...southeast winds 5 to 10 knots increasing to 10 to
15 knots in the late evening and overnight. showers likely in the
evening...then showers and a chance of thunderstorms after
midnight. waves 1 to 3 feet building to 2 to 4 feet after
midnight. 
.monday...south winds 15 to 20 knots becoming west 10 to 15 knots
late in the morning...then becoming northwest 15 to 20 knots late
in the afternoon. a chance of showers and thunderstorms. waves 3 
to 5 feet.
.tuesday...northwest winds 10 to 15 knots becoming west in the
late evening and early morning. waves 3 to 5 feet subsiding to
1 to 3 feet until early morning. 
.wednesday...southwest winds 10 to 15 knots backing to the south
until early morning. waves 1 to 3 feet. 


$$

fzus63 kdtx 181947
glflh 
expires:202106190830;;471393

open lake forecast for lake huron
national weather service detroit/pontiac mi
347 pm edt fri jun 18 2021

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...potential exists for shower/thunderstorm 
redevelopment across the southern great lakes this evening ahead 
of an advancing cold front. winds shift to the northwest behind 
the frontal passage overnight, with dry conditions expected this 
weekend as high pressure returns aside from shower/thunderstorm 
chances across the southern marine zones again tomorrow.


lhz462>464-190830-
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-
347 pm edt fri jun 18 2021

.tonight...south winds 5 to 10 knots veering to the southwest in
the late evening and overnight. waves 1 to 3 feet. 
.saturday...southwest winds 5 to 10 knots veering to the north
late in the afternoon. waves 2 feet or less. 
.saturday night...northeast winds 5 to 10 knots. waves 2 feet or
less. 
.sunday...north winds 5 to 10 knots early in the morning becoming
light and variable...then becoming north 5 to 10 knots early in
the afternoon. waves 2 feet or less. 
.sunday night...southeast winds 5 to 10 knots increasing to 10 to
15 knots in the late evening and early morning...then becoming
south 15 to 20 knots after midnight. a chance of showers. a
chance of thunderstorms after midnight. waves 2 feet or less
building to 2 to 4 feet after midnight. 
.monday...south winds 15 to 20 knots becoming west 10 to 15 knots
late in the morning...then becoming northwest 15 to 20 knots late
in the evening. a chance of showers and thunderstorms. waves 3 to
5 feet.
.tuesday...northwest winds 15 to 20 knots becoming north 10 to
15 knots in the late morning and early afternoon...then
decreasing to 5 to 10 knots early in the evening backing to the
southwest in the late evening and early morning. waves 3 to
5 feet subsiding to 1 to 3 feet in the late evening and early
morning. 
.wednesday...southwest winds 10 to 15 knots backing to the south
until early morning. waves 2 feet or less. 


$$

fzus63 kmkx 181934
glflm 
expires:202106190315;;470789

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
234 pm cdt fri jun 18 2021

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... 

a cold front will then move southeast through the region tonight
into saturday morning in association with the low pressure of 29.4
inches in eastern ontario, bringing a chance for showers and a 
few thunderstorms. winds will shift to the north and northeast 
behind the front across lake michigan. 

weak high pressure of 29.8 inches moving southeast into the region
saturday night should bring light winds. low pressure of 29.5
inches moving northeast through the region sunday into sunday 
night will bring a cold front with it. gusty south to southwest
winds ahead of the front should veer northwest behind it into 
monday. 

&&


lmz080-669-671-673-675-777-779-870-872-874-876-878-190315-
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-
234 pm cdt fri jun 18 2021

sheboygan wi to pentwater mi south...

.tonight...southwest winds 10 to 15 kt increasing to 10 to 20 kt.
slight chance of showers and thunderstorms overnight. waves 1 to
3 ft. 
.saturday...northwest winds 10 to 20 kt becoming north. chance of
showers and thunderstorms in the morning. waves 1 to 3 ft. 
.saturday night...north winds 10 to 20 kt becoming northeast 5 to
10 kt. waves 1 to 3 ft. 
.sunday...southeast winds 5 to 10 kt becoming south 10 to 20 kt
in the afternoon. waves 1 to 2 ft. 
.sunday night...south winds 15 to 25 kt becoming southwest.
chance of showers and thunderstorms in the evening, then showers
likely with a chance of thunderstorms overnight. waves 2 to 4 ft
building to 3 to 5 ft. 
.monday...northwest winds 15 to 25 kt diminishing to 10 to 20 kt.
chance of showers and thunderstorms in the morning. waves 3 to
5 ft. 
.monday night...north winds 10 to 20 kt. waves 3 to 5 ft. 
.tuesday...northwest winds 10 to 20 kt becoming west 10 to 15 kt.
waves 2 to 4 ft. 
.wednesday...southwest winds 10 to 20 kt becoming south. waves
1 to 3 ft.  

$$

fzus63 kmkx 181934
glflm 
expires:202106190315;;470788

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
234 pm cdt fri jun 18 2021

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... 

a cold front will then move southeast through the region tonight
into saturday morning in association with the low pressure of 29.4
inches in eastern ontario, bringing a chance for showers and a 
few thunderstorms. winds will shift to the north and northeast 
behind the front across lake michigan. 

weak high pressure of 29.8 inches moving southeast into the region
saturday night should bring light winds. low pressure of 29.5
inches moving northeast through the region sunday into sunday 
night will bring a cold front with it. gusty south to southwest
winds ahead of the front should veer northwest behind it into 
monday. 

&&


lmz261-362-364-366-563-565-567-868-190315-
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-
234 pm cdt fri jun 18 2021

sheboygan wi to pentwater mi north...

.tonight...southwest winds 10 to 20 kt veering to north. slight
chance of showers and thunderstorms overnight. waves 1 to 3 ft. 
.saturday...north winds 10 to 15 kt increasing to 10 to 20 kt.
chance of showers and slight chance of thunderstorms in the
morning. waves 1 to 3 ft. 
.saturday night...northeast winds 10 to 15 kt diminishing to 5 to
10 kt. waves 1 to 3 ft subsiding to 1 to 2 ft. 
.sunday...southeast winds 5 to 10 kt becoming south. waves 1 to
2 ft. 
.sunday night...south winds 10 to 20 kt veering to southwest
15 to 25 kt. showers and thunderstorms in the evening, then
thunderstorms with a chance of showers overnight. waves 1 to 3 ft
building to 2 to 4 ft. 
.monday...northwest winds 15 to 25 kt. chance of showers and
thunderstorms in the morning. waves 3 to 5 ft. 
.monday night...north winds 15 to 25 kt becoming northwest 10 to
20 kt. waves 3 to 5 ft subsiding to 2 to 4 ft. 
.tuesday...northwest winds 10 to 15 kt becoming southwest 10 to
20 kt. waves 1 to 3 ft. 
.wednesday...southwest winds 10 to 20 kt. waves 2 to 4 ft.  

$$

fzus63 kmqt 182007
glfls 
expires:202106190415;;472629

open lake forecast for lake superior
national weather service marquette mi
407 pm edt fri jun 18 2021

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 29.6 inch trough over central lake superior this 
evening will expand across the eastern half of the lake through 
tonight. this troughing will weaken over lake superior saturday 
morning as a weak 29.8 inch ridge shifts over the region. a 29.5 
inch area of low pressure will approach from the west sunday and 
move over lake superior sunday night. weak 29.8 inch ridging 
returns over western portions of lake superior monday evening and 
builds to 29.9 inches as it shifts across the lake on tuesday. a 
29.7 inch trough moves across the upper great lakes wednesday. 


lsz266-190415-
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-
407 pm edt fri jun 18 2021

.late this afternoon...west winds 10 to 20 knots. waves 2 to
4 feet. 
.tonight...northwest winds 10 to 20 knots. waves subsiding to
1 to 3 feet. 
.saturday...northwest winds 10 to 20 knots diminishing to 5 to
15 knots in the afternoon, then backing west late. waves
subsiding to calm to 2 feet. 
.saturday night...west winds 5 to 15 knots backing south late.
waves calm to 2 feet. 
.sunday...south winds 5 to 15 knots becoming east 10 to 20 knots
by mid afternoon. showers likely by mid afternoon. waves building
to 1 to 3 feet. 
.sunday night...east winds 10 to 20 knots becoming northwest
15 to 25 knots after midnight. rain showers. waves subsiding to
calm to 2 feet, then building to 3 to 5 feet occasionally to
7 feet. 
.monday...northwest winds 20 to 30 knots. a chance of rain
showers through early afternoon. waves building to 4 to 8 feet
occasionally to 10 feet. 
.monday night...northwest winds 15 to 25 knots becoming west
10 to 20 knots after midnight. waves subsiding to 1 to 3 feet. 
.tuesday...west winds 10 to 20 knots backing southwest. a chance
of rain showers. waves subsiding to calm to 2 feet. 
.wednesday...south winds 10 to 20 knots. waves calm to 2 feet. 

$$

fzus63 kmqt 182007
glfls 
expires:202106190415;;472630

open lake forecast for lake superior
national weather service marquette mi
407 pm edt fri jun 18 2021

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 29.6 inch trough over central lake superior this 
evening will expand across the eastern half of the lake through 
tonight. this troughing will weaken over lake superior saturday 
morning as a weak 29.8 inch ridge shifts over the region. a 29.5 
inch area of low pressure will approach from the west sunday and 
move over lake superior sunday night. weak 29.8 inch ridging 
returns over western portions of lake superior monday evening and 
builds to 29.9 inches as it shifts across the lake on tuesday. a 
29.7 inch trough moves across the upper great lakes wednesday. 


lsz267-190415-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
407 pm edt fri jun 18 2021

.late this afternoon...west winds 10 to 20 knots. waves 1 to
3 feet. 
.tonight...northwest winds 10 to 20 knots. waves 1 to 3 feet. 
.saturday...northwest winds 10 to 20 knots backing west in the
afternoon. waves subsiding to calm to 2 feet. 
.saturday night...west winds 5 to 15 knots. waves calm to 2 feet.
.sunday...south winds 5 to 15 knots backing east by mid
afternoon. a slight chance of showers by mid afternoon. waves
calm to 2 feet. 
.sunday night...southeast winds 10 to 20 knots veering northwest
after midnight. showers. waves building to 1 to 3 feet. 
.monday...northwest winds 20 to 30 knots increasing to gales to
35 knots by mid afternoon. a chance of showers. waves building to
5 to 9 feet occasionally to 11 feet. 
.monday night...northwest winds 15 to 25 knots diminishing to
10 to 20 knots after midnight. waves subsiding to 1 to 3 feet. 
.tuesday...west winds 10 to 20 knots backing southwest. a chance
of rain showers. waves subsiding to calm to 2 feet. 
.wednesday...southwest winds 10 to 20 knots backing south. a
chance of showers. waves calm to 2 feet. 

$$

fzus63 kmqt 182007
glfls 
expires:202106190415;;472625

open lake forecast for lake superior
national weather service marquette mi
407 pm edt fri jun 18 2021

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 29.6 inch trough over central lake superior this 
evening will expand across the eastern half of the lake through 
tonight. this troughing will weaken over lake superior saturday 
morning as a weak 29.8 inch ridge shifts over the region. a 29.5 
inch area of low pressure will approach from the west sunday and 
move over lake superior sunday night. weak 29.8 inch ridging 
returns over western portions of lake superior monday evening and 
builds to 29.9 inches as it shifts across the lake on tuesday. a 
29.7 inch trough moves across the upper great lakes wednesday. 


lsz162-190415-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
407 pm edt fri jun 18 2021 /307 pm cdt fri jun 18 2021/

.late this afternoon...west winds 10 to 20 knots. waves 2 to
4 feet subsiding to 1 to 3 feet. 
.tonight...northwest winds 10 to 20 knots becoming east 5 to
15 knots after midnight, then backing northeast late. waves
subsiding to calm to 2 feet. 
.saturday...northeast winds 5 to 15 knots veering south in the
afternoon. waves calm to 2 feet. 
.saturday night...east winds 5 to 15 knots backing northeast
after midnight. waves calm to 2 feet. 
.sunday...east winds 5 to 15 knots increasing to 10 to 20 knots
by mid afternoon. a chance of showers through early afternoon,
then showers by mid afternoon. waves calm to 2 feet. 
.sunday night...north winds 10 to 20 knots becoming northwest
15 to 25 knots after midnight. showers likely through midnight,
then a chance of showers after midnight. waves building to 1 to
3 feet, then subsiding to calm to 2 feet. 
.monday...northwest winds 15 to 25 knots. a chance of showers.
waves building to 2 to 4 feet. 
.monday night...west winds 10 to 20 knots. waves subsiding to
calm to 2 feet. 
.tuesday...southwest winds 10 to 20 knots. a chance of rain
showers. waves calm to 2 feet. 
.wednesday...southwest winds 10 to 20 knots. waves calm to
2 feet. 

$$

fzus63 kmqt 182007
glfls 
expires:202106190415;;472626

open lake forecast for lake superior
national weather service marquette mi
407 pm edt fri jun 18 2021

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 29.6 inch trough over central lake superior this 
evening will expand across the eastern half of the lake through 
tonight. this troughing will weaken over lake superior saturday 
morning as a weak 29.8 inch ridge shifts over the region. a 29.5 
inch area of low pressure will approach from the west sunday and 
move over lake superior sunday night. weak 29.8 inch ridging 
returns over western portions of lake superior monday evening and 
builds to 29.9 inches as it shifts across the lake on tuesday. a 
29.7 inch trough moves across the upper great lakes wednesday. 


lsz263-190415-
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-
407 pm edt fri jun 18 2021

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

$$

fzus63 kmqt 182007
glfls 
expires:202106190415;;472627

open lake forecast for lake superior
national weather service marquette mi
407 pm edt fri jun 18 2021

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 29.6 inch trough over central lake superior this 
evening will expand across the eastern half of the lake through 
tonight. this troughing will weaken over lake superior saturday 
morning as a weak 29.8 inch ridge shifts over the region. a 29.5 
inch area of low pressure will approach from the west sunday and 
move over lake superior sunday night. weak 29.8 inch ridging 
returns over western portions of lake superior monday evening and 
builds to 29.9 inches as it shifts across the lake on tuesday. a 
29.7 inch trough moves across the upper great lakes wednesday. 


lsz264-190415-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
407 pm edt fri jun 18 2021

.late this afternoon...west winds 5 to 15 knots. waves 2 to
4 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 becoming west less than
10 knots in the afternoon, then becoming southwest 5 to 15 knots
late. waves calm to 2 feet. 
.saturday night...west winds 5 to 15 knots becoming southwest
less than 10 knots after midnight, then backing south late. waves
calm to 2 feet. 
.sunday...south winds 5 to 15 knots backing southeast by mid
afternoon. a chance of rain showers. waves calm to 2 feet. 
.sunday night...east winds 5 to 15 knots becoming north 15 to
25 knots after midnight. rain showers. waves building to 3 to
5 feet occasionally to 7 feet. 
.monday...northwest winds 20 to 30 knots becoming west 10 to
20 knots by mid afternoon. a chance of rain showers. waves
building to 4 to 7 feet occasionally to 9 feet, then subsiding to
3 to 5 feet occasionally to 7 feet. 
.monday night...west winds 10 to 20 knots diminishing to 5 to
15 knots after midnight. waves subsiding to calm to 2 feet. 
.tuesday...west winds 5 to 15 knots backing southwest. a chance
of rain showers. waves calm to 2 feet. 
.wednesday...southwest winds 5 to 15 knots backing south. waves
calm to 2 feet. 

$$

fzus63 kmqt 182007
glfls 
expires:202106190415;;472628

open lake forecast for lake superior
national weather service marquette mi
407 pm edt fri jun 18 2021

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 29.6 inch trough over central lake superior this 
evening will expand across the eastern half of the lake through 
tonight. this troughing will weaken over lake superior saturday 
morning as a weak 29.8 inch ridge shifts over the region. a 29.5 
inch area of low pressure will approach from the west sunday and 
move over lake superior sunday night. weak 29.8 inch ridging 
returns over western portions of lake superior monday evening and 
builds to 29.9 inches as it shifts across the lake on tuesday. a 
29.7 inch trough moves across the upper great lakes wednesday. 


lsz265-190415-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
407 pm edt fri jun 18 2021

.late this afternoon...northwest winds 15 to 25 knots. waves 1 to
3 feet. 
.tonight...north winds 10 to 20 knots becoming northwest 5 to
15 knots after midnight. waves subsiding to calm to 2 feet. 
.saturday...north winds 5 to 15 knots veering east late. waves
calm to 2 feet. 
.saturday night...south winds 5 to 15 knots. waves calm to
2 feet. 
.sunday...southeast winds 5 to 15 knots becoming east 10 to
20 knots by mid afternoon. a slight chance of showers through
early afternoon, then showers by mid afternoon. waves building to
1 to 3 feet. 
.sunday night...east winds 10 to 20 knots becoming northwest
15 to 25 knots after midnight. showers. waves subsiding to calm
to 2 feet, then building to 2 to 4 feet. 
.monday...northwest gales to 35 knots diminishing to 20 to
30 knots by mid afternoon. a chance of showers through early
afternoon. waves building to 4 to 7 feet occasionally to 9 feet,
then subsiding to 3 to 5 feet occasionally to 7 feet. 
.monday night...west winds 10 to 20 knots. waves subsiding to
calm to 2 feet. 
.tuesday...west winds 10 to 20 knots backing southwest. a chance
of showers. waves calm to 2 feet. 
.wednesday...south winds 10 to 20 knots. waves calm to 2 feet. 

$$