fzus63 kdtx 202015
glflh 

lhz362-363-210815-
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-
415 pm edt tue oct 20 2020

.tonight...east winds 10 to 15 knots increasing to 15 to 20 knots
late in the evening...then increasing to 20 to 25 knots with
gusts to around 30 knots after midnight becoming southeast 15 to
20 knots early in the morning. showers likely in the evening...
then showers after midnight. waves 1 to 3 feet building to 4 to
6 feet. waves occasionally around 8 feet. 
.wednesday...east winds 10 to 15 knots becoming southwest 15 to
20 knots in the late morning and early afternoon...then becoming
west 10 to 15 knots late in the afternoon. a chance of showers in
the morning. waves 5 to 7 feet. waves occasionally around
10 feet. 
.wednesday night...southwest winds 10 to 15 knots becoming west
5 to 10 knots in the late evening and overnight. a chance of
showers after midnight. waves 3 to 5 feet subsiding to 1 to
3 feet after midnight. 
.thursday...north winds 5 to 10 knots veering to the east in the
late morning and early afternoon...then increasing to 10 to
15 knots early in the afternoon. a chance of showers. waves 1 to
3 feet. 
.thursday night...southeast winds 15 to 20 knots with gusts to
around 30 knots. a chance of showers in the evening. waves 4 to
6 feet. waves occasionally around 8 feet. 
.friday...south winds 15 to 20 knots with gusts to around
30 knots veering to the northwest late in the afternoon. a chance
of showers in the morning...then showers likely late in the
morning. a chance of showers late in the evening. waves 4 to
6 feet. waves occasionally around 8 feet. 
.saturday...northwest winds 10 to 15 knots veering to the 10 to
15 knots 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. 
.sunday...east winds 10 to 15 knots. a chance of until afternoon.
a chance of showers. waves 1 to 3 feet. 


$$

fzus63 kdtx 202015
glflh 
087 

open lake forecast for lake huron
national weather service detroit/pontiac mi
415 pm edt tue oct 20 2020

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 moving east today will be followed by a
low pressure system, 29.80 inches, and a cold front passing
through by tomorrow morning. widespread showers and a few
isolated thunderstorms accompany this system tonight as winds
increase and veer from the east/southeast to southwest by
tomorrow morning. active weather pattern continues through the
late week period into the weekend as a series of low pressure
systems and fronts pass through the region.

lhz361-210815-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
415 pm edt tue oct 20 2020

.tonight...southeast winds 10 to 15 knots becoming east 15 to
20 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 4 to 6 feet after midnight. waves occasionally around
8 feet. 
.wednesday...east winds 10 to 15 knots becoming northeast 5 to
10 knots late in the morning...then becoming west 10 to 15 knots
early in the afternoon increasing to 15 to 20 knots late in the
afternoon. a chance of showers in the morning. waves 4 to 6 feet.
waves occasionally around 8 feet. 
.wednesday night...west winds 10 to 15 knots decreasing to 5 to
10 knots in the late evening and overnight. a chance of showers
after midnight. waves 3 to 5 feet subsiding to 1 to 3 feet after
midnight. 
.thursday...light and variable winds becoming east 5 to 10 knots
in the late morning and early afternoon...then becoming southeast
10 to 15 knots early in the afternoon. a chance of showers in the
morning...then showers in the afternoon. waves 1 to 3 feet. 
.thursday night...southeast winds 15 to 20 knots with gusts to
around 30 knots becoming south 10 to 15 knots after midnight.
showers in the evening...then showers likely after midnight.
waves 3 to 5 feet. 
.friday...southwest winds 10 to 15 knots becoming northwest 15 to
20 knots late in the afternoon...then decreasing to 10 to
15 knots late in the evening. showers likely...then a chance of
showers late in the afternoon. waves 3 to 5 feet. 
.saturday...north winds 10 to 15 knots becoming northwest 5 to
10 knots. waves 2 to 4 feet subsiding to 1 to 3 feet. 
.sunday...east winds 5 to 10 knots. a chance of until afternoon.
a chance of showers. waves 2 feet or less. 


$$

fzus63 kdtx 202015
glflh 

lhz462>464-210815-
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-
415 pm edt tue oct 20 2020

.tonight...northeast winds 10 to 15 knots becoming east 15 to
20 knots late in the evening...then becoming southeast 20 to
25 knots after midnight. showers likely in the evening...then
showers after midnight. waves 1 to 3 feet building to 3 to 5 feet
after midnight. 
.wednesday...southwest winds 15 to 20 knots. waves 4 to 6 feet.
waves occasionally around 8 feet. 
.wednesday night...west winds 10 to 15 knots decreasing to 5 to
10 knots in the late evening and overnight. a chance of showers
after midnight. waves 2 to 4 feet subsiding to 1 to 3 feet in the
late evening and overnight. 
.thursday...north winds 5 to 10 knots veering to the east in the
late morning and early afternoon...then increasing to 10 to
15 knots early in the afternoon. a chance of showers. waves
2 feet or less. 
.thursday night...southeast winds 10 to 15 knots becoming south
15 to 20 knots in the late evening and overnight. waves 3 to
5 feet. 
.friday...south winds 15 to 20 knots becoming southwest 10 to
15 knots late in the morning...then becoming northwest 15 to
20 knots late in the evening. a chance of showers in the
morning...then showers late in the morning. waves 3 to 5 feet. 
.saturday...north winds 15 to 20 knots decreasing to 10 to
15 knots. waves 3 to 5 feet. 
.sunday...east winds 10 to 15 knots. a chance of until afternoon.
a chance of showers. waves 1 to 3 feet. 


$$

fzus63 kmkx 202000
glflm 
667 

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
300 pm cdt tue oct 20 2020

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 trough of low pressure around 29.9 inches will approach lake 
michigan from the west and move across the region tonight. east 
to southeasterly winds will become breezy southwest to westerly 
winds after midnight. the breezy westerly winds will continue 
into wednesday followed by light and variable winds wednesday 
night as high pressure of 30.2 inches moves across the lake. 

breezy southerly winds approaching gales will then develop later 
thursday into thursday night as low pressure around 29.5 inches 
tracks from the central great plains to eastern lake superior. the
winds will then shift to brisk west to northwesterly on friday 
with the passage of the cold front. 

&&

lmz261-362-364-366-563-565-567-868-210315-
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-
300 pm cdt tue oct 20 2020

sheboygan wi to pentwater mi north...

.tonight...east winds 15 to 25 kt becoming south to 30 kt. rain.
patchy fog overnight. waves 2 to 4 ft building to 4 to 6 ft
occasionally to 8 ft. 
.wednesday...west winds to 30 kt. waves 4 to 7 ft occasionally to
9 ft building to 6 to 9 ft occasionally to 12 ft. 
.wednesday night...west winds 15 to 25 kt diminishing to 10 to
20 kt late in the evening, then becoming northwest 10 to 15 kt
after midnight becoming north late. chance of rain showers
overnight. waves 4 to 7 ft occasionally to 9 ft subsiding to 1 to
3 ft. 
.thursday...east winds 15 to 25 kt becoming southeast. rain
showers. waves 3 to 5 ft building to 4 to 7 ft occasionally to
9 ft. 
.thursday night...southeast winds to 30 kt becoming southwest.
showers likely. waves 7 to 10 ft occasionally to 13 ft. 
.friday...west winds to 30 kt becoming northwest 15 to 25 kt.
showers likely in the morning, then chance of showers in the
afternoon. waves 5 to 8 ft occasionally to 10 ft subsiding to
4 to 6 ft occasionally to 8 ft. 
.friday night...north winds 15 to 25 kt diminishing to 10 to
20 kt. waves 3 to 5 ft. 
.saturday...north winds 10 to 20 kt diminishing to 10 to 15 kt.
waves 2 to 4 ft. 
.sunday...east winds 10 to 15 kt. chance of rain showers. waves
1 to 3 ft.  

$$

fzus63 kmkx 202000
glflm 

lmz080-669-671-673-675-777-779-870-872-874-876-878-210315-
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-
300 pm cdt tue oct 20 2020

sheboygan wi to pentwater mi south...

.tonight...southeast winds 15 to 25 kt veering to west to 30 kt.
patchy fog. rain this evening, then chance of rain overnight.
waves 4 to 7 ft occasionally to 9 ft. 
.wednesday...west winds to 30 kt diminishing to 10 to 20 kt.
waves 4 to 7 ft occasionally to 9 ft subsiding to 3 to 5 ft. 
.wednesday night...west winds 10 to 15 kt backing to east 10 to
20 kt. chance of showers in the evening, then showers overnight.
waves 2 to 4 ft subsiding to 1 to 3 ft. 
.thursday...east winds 15 to 25 kt becoming southeast to 30 kt.
showers in the morning, then chance of showers in the afternoon.
waves 4 to 7 ft occasionally to 9 ft. 
.thursday night...south winds to 30 kt. chance of showers
overnight. waves 6 to 9 ft occasionally to 12 ft. 
.friday...west winds to 30 kt becoming northwest 15 to 25 kt.
showers likely. waves 5 to 8 ft occasionally to 10 ft subsiding
to 4 to 6 ft occasionally to 8 ft. 
.friday night...north winds 15 to 25 kt diminishing to 10 to
20 kt. waves 4 to 6 ft occasionally to 8 ft. 
.saturday...north winds 10 to 20 kt. waves 3 to 5 ft. 
.sunday...east winds 10 to 20 kt. chance of rain showers. waves
3 to 5 ft.  

$$

fzus63 kmqt 202003
glfls 

lsz265-210415-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
403 pm edt tue oct 20 2020

.late this afternoon...southeast winds 10 to 20 knots. a chance
of rain showers. waves calm to 2 feet. 
.tonight...southeast winds 15 to 25 knots diminishing to 10 to
20 knots late. rain showers. waves building to 3 to 6 feet
occasionally to 8 feet. 
.wednesday...southwest winds 20 to 30 knots veering west in the
afternoon. a slight chance of rain showers. waves subsiding to
2 to 4 feet, then building to 5 to 8 feet occasionally to
10 feet. 
.wednesday night...west winds 15 to 25 knots diminishing to 5 to
15 knots. a slight chance of rain through midnight. waves
subsiding to calm to 2 feet. 
.thursday...east winds 5 to 15 knots increasing to 20 to 30 knots
by mid afternoon. a chance of rain through early afternoon, then
rain and a slight chance of thunderstorms by mid afternoon. waves
building to 3 to 5 feet occasionally to 7 feet. 
.thursday night...east gales to 35 knots becoming north 20 to
30 knots after midnight. rain. waves building to 3 to 6 feet
occasionally to 8 feet. 
.friday...north winds 20 to 30 knots backing northwest by mid
afternoon. a chance of rain. waves building to 4 to 7 feet
occasionally to 9 feet, then subsiding to 3 to 6 feet
occasionally to 8 feet. 
.friday night...northwest winds 15 to 25 knots diminishing to
10 to 20 knots after midnight. waves subsiding to 1 to 3 feet. 
.saturday...northwest winds 10 to 20 knots. waves subsiding to
calm to 2 feet. 
.sunday...east winds 10 to 20 knots backing north. rain likely,
possibly mixed with snow, then a chance of rain. waves calm to
2 feet. 

$$

fzus63 kmqt 202003
glfls 

lsz266-210415-
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-
403 pm edt tue oct 20 2020

.late this afternoon...southeast winds 10 to 20 knots. a slight
chance of rain showers. waves calm to 2 feet. 
.tonight...southeast winds 15 to 25 knots diminishing to 10 to
20 knots late. rain showers. waves building to 3 to 6 feet
occasionally to 8 feet. 
.wednesday...southwest winds 15 to 25 knots becoming west to
30 knots with a few gale force gusts to 35 knots possible in the
afternoon. a chance of rain showers. waves building to 8 to
11 feet occasionally to 14 feet. 
.wednesday night...west winds 20 to 30 knots diminishing to 10 to
20 knots after midnight, then becoming northwest 5 to 15 knots
late. a slight chance of rain. waves subsiding to 1 to 3 feet. 
.thursday...east winds 5 to 15 knots increasing to 15 to 25 knots
by mid afternoon. a slight chance of rain through early
afternoon, then rain by mid afternoon. waves subsiding to calm to
2 feet, then building to 3 to 5 feet occasionally to 7 feet. 
.thursday night...east winds 25 to 30 knots becoming north 20 to 
30 knots after midnight. rain. waves building to 3 to 6 feet 
occasionally to 8 feet. 
.friday...north winds 25 to 30 knots with some gale force gusts 
to 35 knots becoming northwest 20 to 30 knots by mid afternoon. a 
chance of rain. waves building to 5 to 8 feet occasionally to 10 
feet. 
.friday night...northwest winds 15 to 25 knots diminishing to
10 to 20 knots after midnight. waves subsiding to 3 to 5 feet
occasionally to 7 feet. 
.saturday...northwest winds 10 to 20 knots veering north. waves
subsiding to calm to 2 feet. 
.sunday...east winds 10 to 20 knots. rain likely, then a chance
of rain. waves calm to 2 feet. 

$$

fzus63 kmqt 202003
glfls 

lsz267-210415-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
403 pm edt tue oct 20 2020

.late this afternoon...southeast winds 10 to 20 knots. a slight
chance of rain showers. waves calm to 2 feet. 
.tonight...southeast winds 15 to 25 knots. rain showers. waves
building to 3 to 5 feet occasionally to 7 feet. 
.wednesday...south winds 15 to 25 knots becoming west 20 to
30 knots in the afternoon, then increasing to 30 knots with a few
gale force gusts to 35 knots possible late. a chance of showers.
waves subsiding to 2 to 4 feet, then building to 8 to 11 feet
occasionally to 14 feet. 
.wednesday night...west winds 20 to 30 knots diminishing to 10 to
20 knots late. a chance of rain. waves subsiding to 2 to 4 feet. 
.thursday...southeast winds 5 to 15 knots becoming east 15 to
25 knots by mid afternoon. a slight chance of rain through early
afternoon, then rain by mid afternoon. waves subsiding to calm to
2 feet, then building to 2 to 4 feet. 
.thursday night...east winds 20 to 30 knots backing northwest
after midnight. rain. waves building to 3 to 5 feet occasionally
to 7 feet, then subsiding to 1 to 3 feet. 
.friday...northwest winds 20 to 30 knots increasing to gales to
35 knots by mid afternoon. a chance of rain. waves building to
4 to 7 feet occasionally to 9 feet. 
.friday night...north winds 15 to 25 knots diminishing to 10 to
20 knots after midnight. waves subsiding to 3 to 5 feet
occasionally to 7 feet. 
.saturday...northwest winds 10 to 20 knots veering north. waves
subsiding to calm to 2 feet. 
.sunday...east winds 10 to 20 knots. a chance of rain. waves calm
to 2 feet. 

$$

fzus63 kmqt 202003
glfls 

lsz264-210415-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
403 pm edt tue oct 20 2020

.late this afternoon...southeast winds 5 to 15 knots. a slight
chance of rain showers. waves calm to 2 feet. 
.tonight...southeast winds 10 to 20 knots increasing to 15 to
25 knots after midnight, then diminishing to 10 to 20 knots late.
rain showers. waves building to 3 to 6 feet occasionally to
8 feet. 
.wednesday...southwest winds 15 to 25 knots becoming west to
30 knots with a few gale force gusts to 35 knots possible in the
afternoon. a chance of rain showers. waves building to 7 to
11 feet occasionally to 14 feet. 
.wednesday night...west winds 15 to 25 knots becoming northwest
10 to 20 knots after midnight, then diminishing to 5 to 15 knots
late. waves subsiding to 1 to 3 feet. 
.thursday...east winds 5 to 15 knots increasing to 15 to 25 knots
by mid afternoon. a slight chance of rain through early
afternoon, then rain by mid afternoon. waves subsiding to calm to
2 feet, then building to 3 to 5 feet occasionally to 7 feet. 
.thursday night...east winds 20 to 30 knots backing north after
midnight. rain. waves building to 4 to 7 feet occasionally to
9 feet. 
.friday...north winds 20 to 30 knots becoming northwest 15 to
25 knots by mid afternoon. a chance of rain. waves subsiding to
3 to 6 feet occasionally to 8 feet. 
.friday night...northwest winds 10 to 20 knots diminishing to
5 to 15 knots after midnight. waves subsiding to 2 to 4 feet. 
.saturday...northwest winds 5 to 15 knots veering north. waves
subsiding to calm to 2 feet. 
.sunday...northeast winds 5 to 15 knots backing north. a chance
of rain, possibly mixed with snow. waves calm to 2 feet. 

$$

fzus63 kmqt 202003
glfls 

lsz263-210415-
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-
403 pm edt tue oct 20 2020

.late this afternoon...southeast winds 10 to 20 knots. a chance
of rain showers. waves calm to 2 feet. 
.tonight...southeast winds 15 to 25 knots becoming south 10 to
20 knots late. snow showers through midnight. rain showers. waves
building to 3 to 5 feet occasionally to 7 feet. 
.wednesday...west winds 20 to 30 knots increasing to 30 knots
with a few gale force gusts to 35 knots possible in the
afternoon, then diminishing to 20 to 30 knots late. a slight
chance of rain showers through early afternoon. waves building to
6 to 10 feet occasionally to 13 feet. 
.wednesday night...west winds 15 to 25 knots diminishing to 10 to
20 knots after midnight, then becoming north 5 to 15 knots late.
waves subsiding to calm to 2 feet. 
.thursday...east winds 10 to 20 knots increasing to 20 to
30 knots by mid afternoon. a chance of rain through early
afternoon, then rain by mid afternoon. waves building to 4 to
7 feet occasionally to 9 feet. 
.thursday night...northeast winds 20 to 30 knots becoming north
gales to 35 knots after midnight. rain. waves 4 to 7 feet
occasionally to 9 feet. 
.friday...north winds 20 to 30 knots becoming northwest 15 to
25 knots by mid afternoon. a chance of rain. waves subsiding to
3 to 5 feet occasionally to 7 feet. 
.friday night...northwest winds 15 to 25 knots diminishing to
10 to 20 knots after midnight. waves subsiding to 1 to 3 feet. 
.saturday...west winds 10 to 20 knots veering north. waves
subsiding to calm to 2 feet. 
.sunday...northeast winds 10 to 20 knots backing north. a chance
of rain and snow. waves calm to 2 feet. 

$$

fzus63 kmqt 202003
glfls 
961 

open lake forecast for lake superior
national weather service marquette mi
403 pm edt tue oct 20 2020

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 low pressure system around 30.0 inches will track 
northeast across lower michigan tonight. this low will move 
quickly, reaching quebec wednesday afternoon. another low of 29.6 
inches will develop over the central plains thursday and is 
expected to reach the upper great lakes thursday night. a 30.3 
inch ridge shifts over the upper great lakes friday night and 
remains for the weekend. 

lsz162-210415-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
403 pm edt tue oct 20 2020 /303 pm cdt tue oct 20 2020/

.late this afternoon...southeast winds 10 to 20 knots. a chance
of rain showers. waves calm to 2 feet. 
.tonight...southeast winds 10 to 20 knots veering southwest late.
rain showers, possibly mixed with snow through midnight, then a
chance of rain showers, possibly mixed with snow after midnight.
waves building to 2 to 4 feet, then subsiding to 1 to 3 feet. 
.wednesday...west winds 15 to 25 knots increasing to 20 to
30 knots in the afternoon, then diminishing to 15 to 25 knots
late. a slight chance of rain showers through early afternoon.
waves building to 4 to 7 feet occasionally to 9 feet, then
subsiding to 3 to 6 feet occasionally to 8 feet. 
.wednesday night...west winds 10 to 20 knots becoming northwest
5 to 15 knots after midnight, then veering northeast late. waves
subsiding to calm to 2 feet. 
.thursday...east winds 15 to 25 knots becoming northeast 20 to
30 knots by mid afternoon. a chance of rain through early
afternoon, then rain by mid afternoon. waves building to 4 to
7 feet occasionally to 9 feet. 
.thursday night...northeast gales to 35 knots becoming north
20 to 30 knots after midnight. some gale force gusts to 35 knots
possible. rain. waves 4 to 7 feet occasionally to 9 feet. 
.friday...north winds 20 to 30 knots becoming northwest 15 to
25 knots by mid afternoon. waves subsiding to 2 to 4 feet. 
.friday night...northwest winds 15 to 25 knots diminishing to
10 to 20 knots after midnight. waves subsiding to calm to 2 feet.
.saturday...west winds 10 to 20 knots veering north. waves calm
to 2 feet. 
.sunday...northeast winds 10 to 20 knots backing north. snow,
possibly mixed with rain, then a chance of snow, possibly mixed
with rain. waves calm to 2 feet. 

$$