fzus63 kdtx 231335
glflh 
expires:202109232015;;055792

open lake forecast for lake huron
national weather service detroit/pontiac mi
935 am edt thu sep 23 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...a seasonably strong low pressure system minimizing
near 29.60 inches will take the course of the day to exit the
central great lakes. cool and rainy conditions taper-off by this 
evening followed by lighter wsw flow friday. additional wet 
weather arrives early saturday with a passing cold front.


lhz361>363-232015-
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-
lake huron from sturgeon point to alabaster mi beyond 5nm off
shore-
935 am edt thu sep 23 2021

...gale warning in effect until noon edt today...

.rest of today...northeast winds 20 to 25 knots with gusts to
35 knot gales decreasing to 15 to 20 knots with gusts to around
30 knots in the afternoon. showers late in the morning...then
showers likely in the afternoon. waves 8 to 12 feet. waves
occasionally around 15 feet. 
.tonight...north winds 10 to 15 knots decreasing to 5 to 10 knots
after midnight...then becoming west 10 to 15 knots early in the
morning. a chance of showers in the evening. rain showers likely
after midnight. waves 4 to 6 feet. waves occasionally around
8 feet. 
.friday...west winds 15 to 20 knots decreasing to 10 to 15 knots
early in the afternoon. waves 4 to 6 feet. waves occasionally
around 8 feet. 
.friday night...southwest winds 10 to 15 knots becoming south
15 to 20 knots in the late evening and overnight. showers likely
after midnight. waves 3 to 5 feet building to 4 to 6 feet after
midnight. waves occasionally around 8 feet. 
.saturday...southwest winds 15 to 20 knots becoming west 10 to
15 knots late in the afternoon. a chance of showers. waves 3 to
5 feet. 
.sunday...west winds 10 to 15 knots increasing to 15 to 20 knots
in the late morning and early afternoon...then decreasing to
10 to 15 knots until early morning. waves 2 to 4 feet. 
.monday...west winds 5 to 10 knots veering to the north until
early morning. waves 1 to 3 feet. 


$$

fzus63 kdtx 231335
glflh 
expires:202109232015;;055793

open lake forecast for lake huron
national weather service detroit/pontiac mi
935 am edt thu sep 23 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...a seasonably strong low pressure system minimizing
near 29.60 inches will take the course of the day to exit the
central great lakes. cool and rainy conditions taper-off by this 
evening followed by lighter wsw flow friday. additional wet 
weather arrives early saturday with a passing cold front.


lhz462>464-232015-
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-
935 am edt thu sep 23 2021

.rest of today...southeast winds around 20 knots. a chance of 
showers. waves 8 to 12 feet subsiding to 5 to 7 feet late in the 
afternoon. waves occasionally around 15 feet. 
.tonight...southeast winds 15 to 20 knots decreasing to 10 to
15 knots in the late evening and early morning...then becoming
southwest 15 to 20 knots early in the morning. a chance of
showers. waves 3 to 5 feet. 
.friday...west winds 15 to 20 knots decreasing to 10 to 15 knots
early in the afternoon. waves 4 to 6 feet. waves occasionally
around 8 feet. 
.friday night...southwest winds 10 to 15 knots becoming south
15 to 20 knots in the late evening and overnight. showers likely
after midnight. waves 3 to 5 feet. 
.saturday...southwest winds 15 to 20 knots becoming west 10 to
15 knots late in the afternoon. showers likely in the morning...
then a chance of showers. waves 3 to 5 feet. 
.sunday...west winds 10 to 15 knots increasing to 15 to 20 knots
in the late morning and early afternoon...then decreasing to
10 to 15 knots until early morning. waves 2 to 4 feet subsiding
to 1 to 3 feet in the late evening and early morning. 
.monday...west winds 10 to 15 knots becoming southwest 5 to
10 knots until early evening...then backing to the southeast in
the late evening and early morning. waves 2 feet or less. 


$$

fzus63 kdtx 231141 aaa
glflh 
expires:202109232000;;052403

open lake forecast for lake huron...updated
national weather service detroit/pontiac mi
740 am edt thu sep 23 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...a seasonably strong low pressure system minimizing
near 29.60 inches will take the course of the day to exit the
central great lakes. periods of moderate showers return this
morning with some embedded thunderstorms possible near the
detroit waterways. cool and rainy conditions taper-off by this
evening followed by lighter wsw flow friday. additional wet
weather arrives early saturday with a passing cold front.


lhz362-363-232000-
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-
740 am edt thu sep 23 2021

...gale warning in effect until noon edt today...

.today...northeast winds to 30 knots with gusts to 40 knot gales
decreasing to 15 to 20 knots with gusts to around 30 knots in the
afternoon. showers in the morning...then showers likely in the
afternoon. waves 12 to 16 feet subsiding to 8 to 12 feet in the
afternoon. waves occasionally around 20 feet. 
.tonight...northeast winds 10 to 15 knots becoming north 5 to
10 knots after midnight...then becoming west 10 to 15 knots early
in the morning. a chance of showers in the evening. rain showers
likely after midnight. waves 4 to 6 feet. waves occasionally
around 8 feet. 
.friday...west winds 15 to 20 knots decreasing to 10 to 15 knots
early in the afternoon. waves 4 to 6 feet. waves occasionally
around 8 feet. 
.friday night...southwest winds 10 to 15 knots becoming south
15 to 20 knots in the late evening and overnight. showers likely
after midnight. waves 3 to 5 feet building to 4 to 6 feet after
midnight. waves occasionally around 8 feet. 
.saturday...southwest winds 15 to 20 knots becoming west 10 to
15 knots late in the afternoon. a chance of showers. waves 3 to
5 feet. 
.sunday...west winds 10 to 15 knots increasing to 15 to 20 knots
in the late morning and early afternoon...then decreasing to
10 to 15 knots until early morning. waves 2 to 4 feet. 
.monday...west winds 10 to 15 knots decreasing to 5 to 10 knots
in the late morning and early afternoon...then backing to the
south early in the evening backing to the south 5 to 10 knots in
the late evening and early morning. waves 1 to 3 feet. 


$$

fzus63 kdtx 231141 aaa
glflh 
expires:202109232000;;052402

open lake forecast for lake huron...updated
national weather service detroit/pontiac mi
740 am edt thu sep 23 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...a seasonably strong low pressure system minimizing
near 29.60 inches will take the course of the day to exit the
central great lakes. periods of moderate showers return this
morning with some embedded thunderstorms possible near the
detroit waterways. cool and rainy conditions taper-off by this
evening followed by lighter wsw flow friday. additional wet
weather arrives early saturday with a passing cold front.


lhz361-232000-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
740 am edt thu sep 23 2021

...gale warning in effect until noon edt today...

.today...northeast winds 20 to 25 knots with gusts to 35 knot
gales decreasing to 15 to 20 knots in the afternoon. showers
likely. waves 5 to 7 feet. waves occasionally around 10 feet. 
.tonight...north winds 15 to 20 knots decreasing to 10 to
15 knots late in the evening...then decreasing to 5 to 10 knots
after midnight becoming northwest 10 to 15 knots early in the
morning. a chance of showers. waves 3 to 5 feet. 
.friday...northwest winds 10 to 15 knots becoming west 15 to
20 knots in the late morning and early afternoon...then
decreasing to 10 to 15 knots early in the afternoon. waves 3 to
5 feet. 
.friday night...southwest winds 5 to 10 knots becoming south
10 to 15 knots in the late evening and overnight. a chance of
showers in the evening...then showers after midnight. waves 1 to
3 feet building to 2 to 4 feet in the late evening and overnight.
.saturday...southwest winds 10 to 15 knots increasing to 15 to
20 knots late in the morning...then becoming west 10 to 15 knots
late in the afternoon. a chance of showers. waves 2 to 4 feet. 
.sunday...west winds 10 to 15 knots decreasing to 5 to 10 knots
in the late evening and early morning. waves 1 to 3 feet. 
.monday...west winds 5 to 10 knots veering to the north until
early morning. waves 2 feet or less. 


$$

fzus63 kmkx 231358
glflm 
expires:202109232115;;056382

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
858 am cdt thu sep 23 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... 

low pressure of 29.6 inches over southeast michigan will progress
to just north of lake huron by friday morning, weakening slightly
to around 29.7 inches. strong northerly winds will continue 
across lake michigan today due to the low pressure system. peak 
gales up to 40 kt will occur this morning for the whole lake, then
gradually ease from north to south this afternoon and evening. 
high waves will continue as well, especially across central and 
southern portions of the lake.

after a brief period of lighter winds, southerly winds will 
increase friday afternoon ahead of low pressure trough around 29.6
inches over upper michigan and northern wisconsin. there is a 
chance for southerly gales as the trough swings across lake 
michigan friday evening. gusty westerly winds can be expected on 
saturday, although below gale levels. high pressure of 30.1 
inches will move through the midwest and ohio river valley 
saturday night into sunday. 

&&


lmz080-669-671-673-675-777-779-870-872-874-876-878-232115-
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-
858 am cdt thu sep 23 2021

sheboygan wi to pentwater mi south...

...gale warning in effect until 4 pm cdt this afternoon...

.rest of today...north gales to 40 kt. slight chance of
waterspouts. chance of showers through mid morning, then showers
likely this afternoon. waves 12 to 16 ft occasionally to 21 ft. 
.tonight...northwest gales to 35 kt possible early evening 
diminishing to 30 kt late in the evening, then becoming northwest 
to 30 kt after midnight becoming west 15 to 25 kt late. slight 
chance of showers in the evening. waves 10 to 14 ft occasionally 
to 18 ft subsiding to 4 to 7 ft occasionally to 9 ft. 
.friday...west winds 10 to 20 kt becoming southwest 15 to 25 kt
early in the afternoon, then becoming south to 30 kt late. waves
4 to 6 ft occasionally to 8 ft building to 4 to 7 ft occasionally
to 9 ft. 
.friday night...southwest gales to 35 kt becoming west to 30 kt.
showers in the evening, then chance of showers overnight. waves
6 to 9 ft occasionally to 12 ft. 
.saturday...west winds 10 to 20 kt increasing to 15 to 25 kt.
waves 4 to 6 ft occasionally to 8 ft. 
.saturday night...west winds 15 to 25 kt diminishing to 10 to
20 kt. waves 3 to 5 ft. 
.sunday...west winds 10 to 20 kt becoming southwest 10 to 15 kt.
waves 2 to 4 ft. 
.monday...southwest winds 10 to 15 kt becoming south. waves 1 to
3 ft.  

$$

fzus63 kmkx 231358
glflm 
expires:202109232115;;056380

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
858 am cdt thu sep 23 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... 

low pressure of 29.6 inches over southeast michigan will progress
to just north of lake huron by friday morning, weakening slightly
to around 29.7 inches. strong northerly winds will continue 
across lake michigan today due to the low pressure system. peak 
gales up to 40 kt will occur this morning for the whole lake, then
gradually ease from north to south this afternoon and evening. 
high waves will continue as well, especially across central and 
southern portions of the lake.

after a brief period of lighter winds, southerly winds will 
increase friday afternoon ahead of low pressure trough around 29.6
inches over upper michigan and northern wisconsin. there is a 
chance for southerly gales as the trough swings across lake 
michigan friday evening. gusty westerly winds can be expected on 
saturday, although below gale levels. high pressure of 30.1 
inches will move through the midwest and ohio river valley 
saturday night into sunday. 

&&


lmz261-362-364-563-232115-
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 rock island passage to sturgeon bay wi-
858 am cdt thu sep 23 2021

sturgeon bay wi to point betsie mi north...

...gale warning in effect until 1 pm cdt this afternoon...

.rest of today...north gales to 40 kt diminishing to 30 kt.
chance of showers. waves 8 to 12 ft occasionally to 16 ft
subsiding to 6 to 9 ft occasionally to 12 ft. 
.tonight...north winds to 30 kt becoming northwest 15 to 25 kt.
chance of showers. waves 5 to 8 ft occasionally to 10 ft
subsiding to 4 to 6 ft occasionally to 8 ft. 
.friday...northwest winds 10 to 20 kt becoming west late in the
morning, then becoming southwest early in the afternoon
increasing to 30 kt late. waves 2 to 4 ft building to 3 to 5 ft. 
.friday night...southwest winds to 30 kt becoming west. showers.
waves 4 to 7 ft occasionally to 9 ft. 
.saturday...west winds 15 to 25 kt. waves 4 to 6 ft occasionally
to 8 ft. 
.saturday night...west winds 10 to 20 kt becoming northwest.
waves 3 to 5 ft. 
.sunday...west winds 10 to 20 kt. waves 2 to 4 ft. 
.monday...south winds 5 to 10 kt becoming southwest 10 to 15 kt.
waves 1 to 2 ft.  

$$

fzus63 kmkx 231358
glflm 
expires:202109232115;;056381

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
858 am cdt thu sep 23 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... 

low pressure of 29.6 inches over southeast michigan will progress
to just north of lake huron by friday morning, weakening slightly
to around 29.7 inches. strong northerly winds will continue 
across lake michigan today due to the low pressure system. peak 
gales up to 40 kt will occur this morning for the whole lake, then
gradually ease from north to south this afternoon and evening. 
high waves will continue as well, especially across central and 
southern portions of the lake.

after a brief period of lighter winds, southerly winds will 
increase friday afternoon ahead of low pressure trough around 29.6
inches over upper michigan and northern wisconsin. there is a 
chance for southerly gales as the trough swings across lake 
michigan friday evening. gusty westerly winds can be expected on 
saturday, although below gale levels. high pressure of 30.1 
inches will move through the midwest and ohio river valley 
saturday night into sunday. 

&&


lmz366-565-567-868-232115-
lake michigan from point betsie to manistee mi 5 nm offshore to
mid lake-
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-
858 am cdt thu sep 23 2021

sturgeon bay wi to point betsie mi south to sheboygan wi to
pentwater mi...

...gale warning in effect until 4 pm cdt this afternoon...

.rest of today...north gales to 40 kt diminishing to 30 kt.
slight chance of waterspouts. chance of showers. waves 10 to
14 ft occasionally to 18 ft subsiding to 8 to 12 ft occasionally
to 16 ft. 
.tonight...north winds to 30 kt becoming northwest 15 to 25 kt.
chance of showers in the evening, then slight chance of showers
overnight. waves 7 to 10 ft occasionally to 13 ft subsiding to
4 to 6 ft occasionally to 8 ft. 
.friday...west winds 10 to 20 kt becoming southwest early in the
afternoon, then becoming south to 30 kt late. waves 3 to 5 ft
building to 4 to 6 ft occasionally to 8 ft. 
.friday night...southwest winds to 30 kt becoming west. showers
in the evening. waves 5 to 8 ft occasionally to 10 ft. 
.saturday...west winds 15 to 25 kt. waves 4 to 6 ft occasionally
to 8 ft. 
.saturday night...west winds 15 to 25 kt becoming northwest 10 to
20 kt. waves 3 to 5 ft. 
.sunday...west winds 10 to 20 kt becoming southwest 10 to 15 kt.
waves 2 to 4 ft. 
.monday...southwest winds 10 to 15 kt becoming south 5 to 10 kt.
waves 1 to 2 ft.  

$$

fzus63 kmqt 231352
glfls 
expires:202109232200;;056111

open lake forecast for lake superior
national weather service marquette mi
952 am edt thu sep 23 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...the 29.7 inch low pressure will continue to lift 
north from lower michigan across lake huron through this afternoon,
weakening to 29.8 inches by tonight. this advancing low will 
replace a 30.1 inch ridge over superior today with a 29.9 inch 
trough. as this low lifts north towards james bay on friday, a 
secondary trough will approach western superior from the northwest
at 29.8 inches friday night. this trough will linger over the 
great lakes through the weekend as 30.1 inch high pressure remains
to the south over the appalachians.

&&


lsz162-232200-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
952 am edt thu sep 23 2021 /852 am cdt thu sep 23 2021/

.rest of today...west winds 5 to 15 knots backing south in the
afternoon, then backing southeast late. waves calm to 2 feet. 
.tonight...southeast winds 5 to 15 knots veering southwest after
midnight. waves calm to 2 feet. 
.friday...west winds 10 to 20 knots becoming northwest 15 to
25 knots late. a chance of showers. waves building to 2 to
4 feet. 
.friday night...northwest winds 15 to 25 knots backing west after
midnight. a chance of showers. waves 2 to 4 feet. 
.saturday...west winds 15 to 25 knots. a chance of showers. waves
subsiding to 1 to 3 feet. 
.saturday night...northwest winds 10 to 20 knots diminishing to
5 to 15 knots after midnight. waves subsiding to calm to 2 feet. 
.sunday...southwest winds 5 to 15 knots backing northeast. waves
calm to 2 feet. 
.monday...east winds 5 to 15 knots backing northwest. waves calm
to 2 feet. 

$$

fzus63 kmqt 231352
glfls 
expires:202109232200;;056112

open lake forecast for lake superior
national weather service marquette mi
952 am edt thu sep 23 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...the 29.7 inch low pressure will continue to lift 
north from lower michigan across lake huron through this afternoon,
weakening to 29.8 inches by tonight. this advancing low will 
replace a 30.1 inch ridge over superior today with a 29.9 inch 
trough. as this low lifts north towards james bay on friday, a 
secondary trough will approach western superior from the northwest
at 29.8 inches friday night. this trough will linger over the 
great lakes through the weekend as 30.1 inch high pressure remains
to the south over the appalachians.

&&


lsz263-232200-
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-
952 am edt thu sep 23 2021

.rest of today...northwest winds 5 to 15 knots veering east in
the afternoon. waves calm to 2 feet. 
.tonight...east winds 5 to 15 knots veering west after midnight,
then backing southwest late. waves calm to 2 feet. 
.friday...southwest winds 10 to 20 knots veering west in the
afternoon, then increasing to 15 to 25 knots late. a chance of
showers by mid afternoon. waves building to 2 to 4 feet. 
.friday night...northwest winds 15 to 25 knots. a chance of
showers. waves building to 3 to 5 feet occasionally to 7 feet. 
.saturday...west winds 20 to 30 knots. a chance of showers. waves
subsiding to 2 to 4 feet. 
.saturday night...northwest winds 15 to 25 knots diminishing to
10 to 20 knots after midnight. waves subsiding to calm to 2 feet.
.sunday...west winds 10 to 20 knots becoming south 5 to 15 knots.
waves calm to 2 feet. 
.monday...east winds 5 to 15 knots backing northwest. waves calm
to 2 feet. 

$$

fzus63 kmqt 231352
glfls 
expires:202109232200;;056113

open lake forecast for lake superior
national weather service marquette mi
952 am edt thu sep 23 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...the 29.7 inch low pressure will continue to lift 
north from lower michigan across lake huron through this afternoon,
weakening to 29.8 inches by tonight. this advancing low will 
replace a 30.1 inch ridge over superior today with a 29.9 inch 
trough. as this low lifts north towards james bay on friday, a 
secondary trough will approach western superior from the northwest
at 29.8 inches friday night. this trough will linger over the 
great lakes through the weekend as 30.1 inch high pressure remains
to the south over the appalachians.

&&


lsz264-232200-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
952 am edt thu sep 23 2021

.rest of today...east winds 5 to 15 knots backing north late.
waves calm to 2 feet building to 1 to 3 feet. 
.tonight...north winds 5 to 15 knots backing west late. waves
subsiding to calm to 2 feet. 
.friday...southwest winds 5 to 15 knots increasing to 10 to
20 knots in the afternoon, then veering west late. a chance of
showers by mid afternoon. waves building to 1 to 3 feet. 
.friday night...northwest winds 10 to 20 knots. showers likely
through midnight, then a chance of showers after midnight. waves
building to 2 to 4 feet. 
.saturday...northwest winds 15 to 25 knots. a chance of showers.
waves building to 3 to 5 feet occasionally to 7 feet. 
.saturday night...northwest winds 10 to 20 knots diminishing to
5 to 15 knots after midnight. waves subsiding to 1 to 3 feet. 
.sunday...northwest winds 5 to 15 knots backing southwest. waves
subsiding to calm to 2 feet. 
.monday...east winds 5 to 15 knots. waves calm to 2 feet. 

$$

fzus63 kmqt 231352
glfls 
expires:202109232200;;056114

open lake forecast for lake superior
national weather service marquette mi
952 am edt thu sep 23 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...the 29.7 inch low pressure will continue to lift 
north from lower michigan across lake huron through this afternoon,
weakening to 29.8 inches by tonight. this advancing low will 
replace a 30.1 inch ridge over superior today with a 29.9 inch 
trough. as this low lifts north towards james bay on friday, a 
secondary trough will approach western superior from the northwest
at 29.8 inches friday night. this trough will linger over the 
great lakes through the weekend as 30.1 inch high pressure remains
to the south over the appalachians.

&&


lsz265-232200-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
952 am edt thu sep 23 2021

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

$$

fzus63 kmqt 231352
glfls 
expires:202109232200;;056115

open lake forecast for lake superior
national weather service marquette mi
952 am edt thu sep 23 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...the 29.7 inch low pressure will continue to lift 
north from lower michigan across lake huron through this afternoon,
weakening to 29.8 inches by tonight. this advancing low will 
replace a 30.1 inch ridge over superior today with a 29.9 inch 
trough. as this low lifts north towards james bay on friday, a 
secondary trough will approach western superior from the northwest
at 29.8 inches friday night. this trough will linger over the 
great lakes through the weekend as 30.1 inch high pressure remains
to the south over the appalachians.

&&


lsz266-232200-
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-
952 am edt thu sep 23 2021

.rest of today...northeast winds 15 to 25 knots backing north in
the afternoon. a slight chance of showers by mid afternoon. waves
4 to 7 feet occasionally to 9 feet subsiding to 3 to 6 feet
occasionally to 8 feet. 
.tonight...northeast winds 15 to 25 knots becoming north 10 to
20 knots after midnight, then becoming northwest 5 to 15 knots
late. a slight chance of showers through midnight. waves
subsiding to 1 to 3 feet. 
.friday...west winds 5 to 15 knots becoming southwest 10 to
20 knots in the afternoon, then veering west late. a chance of
showers by mid afternoon. waves subsiding to calm to 2 feet, then
building to 1 to 3 feet. 
.friday night...west winds 15 to 25 knots. showers likely through
midnight, then a chance of showers after midnight. waves building
to 2 to 4 feet. 
.saturday...west winds 15 to 25 knots increasing to 20 to
30 knots by mid afternoon. a chance of showers. waves building to
3 to 5 feet occasionally to 7 feet. 
.saturday night...northwest winds 15 to 25 knots. a chance of
showers. waves subsiding to 2 to 4 feet. 
.sunday...northwest winds 10 to 20 knots backing west. waves
subsiding to calm to 2 feet. 
.monday...east winds 10 to 20 knots. waves calm to 2 feet. 

$$

fzus63 kmqt 231352
glfls 
expires:202109232200;;056116

open lake forecast for lake superior
national weather service marquette mi
952 am edt thu sep 23 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...the 29.7 inch low pressure will continue to lift 
north from lower michigan across lake huron through this afternoon,
weakening to 29.8 inches by tonight. this advancing low will 
replace a 30.1 inch ridge over superior today with a 29.9 inch 
trough. as this low lifts north towards james bay on friday, a 
secondary trough will approach western superior from the northwest
at 29.8 inches friday night. this trough will linger over the 
great lakes through the weekend as 30.1 inch high pressure remains
to the south over the appalachians.

&&


lsz267-232200-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
952 am edt thu sep 23 2021

.rest of today...northeast winds 20 to 30 knots backing north in
the afternoon, then veering northeast late. a chance of showers.
waves 4 to 7 feet occasionally to 9 feet subsiding to 3 to 6 feet
occasionally to 8 feet. 
.tonight...northeast winds 15 to 25 knots backing north after
midnight, then diminishing to 10 to 20 knots late. a chance of
showers. waves subsiding to 1 to 3 feet. 
.friday...northwest winds 10 to 20 knots backing west in the
afternoon, then backing south late. a chance of showers by mid
afternoon. waves subsiding to calm to 2 feet. 
.friday night...west winds 10 to 20 knots increasing to 15 to
25 knots after midnight. showers. a slight chance of
thunderstorms after midnight. waves building to 2 to 4 feet. 
.saturday...west winds 15 to 25 knots. a chance of showers
through early afternoon. showers likely by mid afternoon. waves
building to 3 to 6 feet occasionally to 8 feet. 
.saturday night...west winds 15 to 25 knots becoming northwest
10 to 20 knots after midnight. a chance of showers and
thunderstorms. waves subsiding to 2 to 4 feet. 
.sunday...northwest winds 10 to 20 knots. waves subsiding to calm
to 2 feet. 
.monday...northeast winds 10 to 20 knots backing north. waves
calm to 2 feet. 

$$