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fzus63 kdtx 190912
glflh 
229 

open lake forecast for lake huron
national weather service detroit/pontiac mi
409 am est tue jan 19 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 weak low pressure system will minimize near 29.80
inhg near the soo locks as it moves east today. high pressure
maximizes near 30.20 inhg while buildings into the great lakes on
wednesday, followed by a clipper low strengthening to 29.10 inhg
on thursday. stronger high pressure returns over the plains on
friday.

lhz361-192100-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
409 am est tue jan 19 2021

.today...west winds 15 to 20 knots. a chance of freezing drizzle
in the morning. snow likely. waves 4 to 6 feet. 
.tonight...northwest winds 15 to 20 knots decreasing to 10 to
15 knots after midnight. waves 3 to 5 feet. waves occasionally
around 8 feet. 
.wednesday...northwest winds 5 to 10 knots becoming west 10 to
15 knots in the late morning and early afternoon...then becoming
southwest 15 to 20 knots early in the afternoon. waves 1 to
3 feet building to 2 to 4 feet early in the afternoon. 
.wednesday night...southwest winds 15 to 20 knots with gusts to
around 30 knots. a chance of snow showers. a chance of rain after
midnight. waves 4 to 6 feet. waves occasionally around 8 feet. 
.thursday...west winds 15 to 20 knots. gusts to 30 knots. waves
4 to 6 feet. 
.friday...northwest winds 15 to 20 knots decreasing to 10 to
15 knots. waves 3 to 5 feet. waves occasionally around 8 feet. 
.saturday...north winds 5 to 10 knots. waves 2 feet or less. 


$$
fzus63 kdtx 190912
glflh 

lhz362-363-192100-
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-
409 am est tue jan 19 2021

...gale watch in effect from wednesday evening through thursday
morning...

.today...west winds 15 to 20 knots. a chance of freezing drizzle
in the morning. a chance of snow. waves 5 to 7 feet. waves
occasionally around 10 feet. 
.tonight...northwest winds 15 to 20 knots. a chance of snow.
waves 5 to 7 feet. waves occasionally around 10 feet. 
.wednesday...west winds 10 to 15 knots becoming southwest 15 to
20 knots early in the afternoon. waves 4 to 6 feet. waves
occasionally around 8 feet. 
.wednesday night...south winds 20 to 25 knots becoming southwest
to 30 knots in the late evening and early morning...then
decreasing to 20 to 25 knots after midnight. gusts to 35 knot
gales. a chance of rain after midnight. waves 6 to 9 feet. waves
occasionally around 12 feet. 
.thursday...west winds 15 to 20 knots. gusts to 30 knots in the
morning. waves 6 to 9 feet. waves occasionally around 12 feet. 
.friday...northwest winds 15 to 20 knots. waves 5 to 7 feet.
waves occasionally around 10 feet. 
.saturday...northwest winds 10 to 15 knots becoming north 5 to
10 knots until early morning. waves 3 to 5 feet subsiding to 1 to
3 feet in the late evening and early morning. 


$$
fzus63 kdtx 190912
glflh 

lhz462-192100-
lake huron from port austin to harbor beach beyond 5nm off shore-
409 am est tue jan 19 2021

...gale watch in effect from wednesday evening through thursday
morning...

.today...west winds 15 to 20 knots increasing to 20 to 25 knots
late in the morning...then decreasing to 15 to 20 knots in the
afternoon. a chance of freezing drizzle in the morning. a chance
of snow in the morning. waves 4 to 6 feet. 
.tonight...west winds 15 to 20 knots. a chance of snow showers.
waves 4 to 6 feet. waves occasionally around 8 feet. 
.wednesday...northwest winds 15 to 20 knots becoming west 10 to
15 knots in the late morning and early afternoon...then becoming
southwest 15 to 20 knots early in the afternoon. waves 4 to
6 feet. waves occasionally around 8 feet. 
.wednesday night...southwest winds 20 to 25 knots with gusts to
35 knot gales. waves 5 to 7 feet. waves occasionally around
10 feet. 
.thursday...west winds 15 to 20 knots. waves 4 to 6 feet. 
.friday...northwest winds 15 to 20 knots. waves 4 to 6 feet. 
.saturday...northwest winds 15 to 20 knots decreasing to 5 to
10 knots. waves 3 to 5 feet subsiding to 1 to 3 feet in the late
evening and early morning. waves occasionally around 8 feet. 


$$
fzus63 kmkx 190914
glflm 
904 

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
314 am cst tue jan 19 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... 

northwesterly winds persist today as low pressure around 29.9 
inches continue to push east across the northern great lakes and 
as high pressure builds to the south of lake michigan. there will
also be a weakening surface wave to move across the upper 
mississippi river valley today as well. then another low around 
29.1 inches is expected to cross manitoba and ontario wednesday 
and thursday. gusty southwest winds look to develop ahead of the 
system, with gales looking increasingly likely for wednesday 
afternoon and night. thus, a gale watch remains in effect for 
this time. then a cold front pushes across the lake and gusty 
west to northwest winds, generally remaining below gales, will 
develop wednesday night and continue through friday.

&&

lmz261-362-364-366-563-565-567-868-191615-
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-
314 am cst tue jan 19 2021

sheboygan wi to pentwater mi north...

...gale watch in effect from wednesday afternoon through
wednesday evening...

.today...northwest winds 15 to 25 kt diminishing to 10 to 20 kt.
chance of snow. waves 3 to 5 ft. 
.tonight...northwest winds 10 to 20 kt becoming west. chance of
snow in the evening, then chance of flurries overnight. waves
4 to 6 ft occasionally to 8 ft. 
.wednesday...west winds 10 to 20 kt becoming southwest to 30 kt
late in the morning, then increasing to gales to 35 kt early in
the afternoon increasing to gales to 40 kt late. waves 2 to 4 ft
building to 10 to 14 ft occasionally to 18 ft. 
.wednesday night...southwest gales to 40 kt becoming west to
30 kt overnight. chance of light freezing rain in the evening.
waves 10 to 14 ft occasionally to 18 ft subsiding to 8 to 12 ft
occasionally to 16 ft. 
.thursday...west winds to 30 kt. waves 5 to 8 ft occasionally to
10 ft. 
.thursday night...northwest winds to 30 kt diminishing to 15 to
25 kt. chance of snow showers. waves 4 to 7 ft occasionally to
9 ft. 
.friday...northwest winds 15 to 25 kt diminishing to 10 to 20 kt.
chance of snow showers. waves 4 to 6 ft occasionally to 8 ft. 
.saturday...northwest winds 5 to 10 kt becoming west 10 to 15 kt.
waves 1 to 3 ft.  

$$
fzus63 kmkx 190914
glflm 

lmz080-669-671-673-675-777-779-870-872-874-876-878-191615-
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-
314 am cst tue jan 19 2021

sheboygan wi to pentwater mi south...

...gale watch in effect from wednesday afternoon through
wednesday evening...

.today...west winds 10 to 20 kt. chance of flurries this morning,
then chance of snow this afternoon. waves 4 to 6 ft occasionally
to 8 ft subsiding to 3 to 5 ft. 
.tonight...northwest winds 15 to 25 kt diminishing to 10 to
20 kt. chance of snow in the evening, then chance of flurries
overnight. waves 3 to 5 ft building to 4 to 7 ft occasionally to
9 ft. 
.wednesday...west winds 10 to 20 kt becoming southwest late in
the morning, then increasing to 30 kt early in the afternoon
increasing to gales to 40 kt late. waves 4 to 6 ft occasionally
to 8 ft building to 8 to 11 ft occasionally to 14 ft. 
.wednesday night...southwest gales to 40 kt becoming west gales
to 35 kt. waves 10 to 14 ft occasionally to 18 ft subsiding to
8 to 12 ft occasionally to 16 ft. 
.thursday...west winds to 30 kt. waves 5 to 8 ft occasionally to
10 ft. 
.thursday night...west winds to 30 kt becoming northwest 15 to
25 kt. waves 5 to 8 ft occasionally to 10 ft. 
.friday...northwest winds 10 to 20 kt. waves 4 to 7 ft
occasionally to 9 ft subsiding to 4 to 6 ft occasionally to 8 ft.
.saturday...northwest winds 5 to 10 kt becoming west 10 to 15 kt.
waves 1 to 3 ft.  

$$
fzus63 kmqt 190841
glfls 
471 

open lake forecast for lake superior
national weather service marquette mi
341 am est tue jan 19 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 29.8 inch surface low over far eastern lake 
superior this morning will move into southeast ontario by this
evening. a 30.1 inch ridge will build over lake superior into
this evening ahead of a 29.0 inch low that will move to near lake
winnipeg by wednesday morning. this low will move southeast into 
ontario by wednesday evening weakening to 29.1 inches. this low
will stay north of lake superior wednesday night and move to new
england by friday morning while weakening to 29.5 inches. ridging
of 30.2 inches will build over lake superior on friday. ridging 
strengthens to 30.4 inches on saturday as the ridge axis moves 
directly over lake superior.

lsz162-191645-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
341 am est tue jan 19 2021 /241 am cst tue jan 19 2021/

...gale watch in effect from wednesday afternoon through thursday
morning...

.early this morning...northwest winds 10 to 20 knots. scattered
snow showers. waves 1 to 3 feet. 
.today...north winds 10 to 20 knots backing northwest. scattered
snow showers. waves subsiding to calm to 2 feet, then building to
1 to 3 feet. 
.tonight...northwest winds 15 to 25 knots backing southwest late.
isolated snow showers. waves building to 3 to 6 feet occasionally
to 8 feet. 
.wednesday...southwest winds 20 to 30 knots increasing to gales
to 35 knots. freezing spray in the morning. a slight chance of
snow showers. a slight chance of rain showers in the afternoon.
waves building to 7 to 10 feet occasionally to 13 feet. 
.wednesday night...west gales to 35 knots diminishing to 20 to
30 knots after midnight. waves subsiding to 4 to 7 feet
occasionally to 9 feet. 
.thursday...west winds 20 to 30 knots veering northwest in the
afternoon. waves subsiding to 3 to 6 feet occasionally to 8 feet.
.thursday night...northwest winds 20 to 30 knots diminishing to
15 to 25 knots after midnight. freezing spray. waves subsiding to
2 to 4 feet. 
.friday...northwest winds 10 to 20 knots. a chance of snow
showers. waves subsiding to calm to 2 feet. 
.saturday...west winds 5 to 15 knots backing southwest. waves
calm to 2 feet. 

$$
fzus63 kmqt 190841
glfls 

lsz267-191645-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
341 am est tue jan 19 2021

...gale watch in effect from wednesday afternoon through thursday
morning...

.early this morning...northwest winds to 30 knots. snow showers. 
waves 5 to 9 feet occasionally to 11 feet. 
.today...northwest winds 20 to 30 knots. freezing spray. snow
showers. waves subsiding to 3 to 5 feet occasionally to 7 feet. 
.tonight...north winds 15 to 25 knots diminishing to 10 to
20 knots by midnight, then backing northwest late. freezing spray
in the evening. snow showers in the evening, then scattered snow
showers after midnight. waves subsiding to 2 to 4 feet. 
.wednesday...southwest winds 15 to 25 knots becoming south gales
to 40 knots. freezing spray. a chance of snow showers. waves
building to 7 to 10 feet occasionally to 13 feet. 
.wednesday night...southwest gales to 35 knots veering west after
midnight. snow showers likely. waves subsiding to 6 to 9 feet
occasionally to 11 feet, then building to 8 to 11 feet
occasionally to 14 feet. 
.thursday...west gales to 35 knots becoming northwest 20 to
30 knots in the afternoon. snow showers likely. waves subsiding
to 6 to 9 feet occasionally to 11 feet. 
.thursday night...northwest winds 20 to 30 knots veering north
after midnight. snow showers likely. freezing spray after
midnight. waves subsiding to 4 to 7 feet occasionally to 9 feet. 
.friday...north winds 15 to 25 knots diminishing to 10 to
20 knots. freezing spray. snow showers likely. waves subsiding to
1 to 3 feet. 
.saturday...north winds 10 to 20 knots veering south. waves
subsiding to calm to 2 feet, then building to 2 to 4 feet. 

$$
fzus63 kmqt 190841
glfls 

lsz263-191645-
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-
341 am est tue jan 19 2021

...gale watch in effect from wednesday afternoon through thursday
morning...

.early this morning...north winds 15 to 25 knots. freezing spray.
scattered snow showers. waves 2 to 4 feet. 
.today...north winds 15 to 25 knots backing northwest by mid
afternoon. freezing spray in the morning. scattered snow showers.
waves subsiding to 1 to 3 feet. 
.tonight...northwest winds 15 to 25 knots becoming west 10 to
20 knots by midnight, then becoming southwest 15 to 25 knots
late. scattered snow showers. freezing spray after midnight.
waves building to 3 to 6 feet occasionally to 8 feet. 
.wednesday...southwest gales to 40 knots. freezing spray in the
morning. a chance of snow showers. a slight chance of rain
showers in the afternoon. waves building to 9 to 12 feet
occasionally to 15 feet. 
.wednesday night...west gales to 40 knots. a slight chance of
rain and snow showers. waves subsiding to 6 to 9 feet
occasionally to 11 feet. 
.thursday...west winds 20 to 30 knots veering northwest in the
afternoon. a chance of snow showers. waves subsiding to 4 to
7 feet occasionally to 9 feet. 
.thursday night...north winds 20 to 30 knots diminishing to 15 to
25 knots after midnight. freezing spray. a chance of snow
showers. waves subsiding to 3 to 5 feet occasionally to 7 feet. 
.friday...northwest winds 10 to 20 knots. freezing spray. a
chance of snow showers. waves subsiding to calm to 2 feet. 
.saturday...west winds 5 to 15 knots becoming south 10 to
20 knots. waves calm to 2 feet. 

$$
fzus63 kmqt 190841
glfls 

lsz264-191645-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
341 am est tue jan 19 2021

...gale watch in effect from wednesday afternoon through thursday
morning...

.early this morning...north winds 15 to 25 knots. freezing spray.
scattered snow showers. waves 3 to 6 feet occasionally to 8 feet.
.today...north winds 15 to 25 knots diminishing to 10 to 20 knots
by late morning, then backing northwest by mid afternoon.
freezing spray. scattered snow showers. waves subsiding to 2 to
4 feet. 
.tonight...northwest winds 10 to 20 knots diminishing to 5 to
15 knots by midnight, then becoming west 15 to 25 knots late.
freezing spray in the evening. scattered snow showers. waves
subsiding to 1 to 3 feet, then building to 3 to 5 feet
occasionally to 7 feet. 
.wednesday...southwest winds 20 to 30 knots increasing to gales
to 40 knots. freezing spray in the morning. a chance of snow
showers. waves building to 9 to 12 feet occasionally to 15 feet. 
.wednesday night...west gales to 40 knots. a chance of snow
showers, possibly mixed with rain. waves subsiding to 7 to
10 feet occasionally to 13 feet. 
.thursday...northwest winds 20 to 30 knots diminishing to 15 to
25 knots in the afternoon. a chance of snow showers. waves
subsiding to 5 to 8 feet occasionally to 10 feet. 
.thursday night...north winds 15 to 25 knots. freezing spray. a
chance of snow showers in the evening. snow showers likely after
midnight. waves subsiding to 4 to 7 feet occasionally to 9 feet. 
.friday...north winds 10 to 20 knots becoming northwest 5 to
15 knots. freezing spray. snow showers likely, then a chance of
snow showers. waves subsiding to calm to 2 feet. 
.saturday...northwest winds 5 to 15 knots becoming south 10 to
20 knots. waves building to 1 to 3 feet. 

$$
fzus63 kmqt 190841
glfls 

lsz265-191645-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
341 am est tue jan 19 2021

...gale watch in effect from wednesday afternoon through thursday
morning...

.early this morning...northwest winds 15 to 25 knots. freezing
spray. scattered snow showers. waves 3 to 6 feet occasionally to
8 feet. 
.today...northwest winds 15 to 25 knots. freezing spray.
scattered snow showers. waves subsiding to 3 to 5 feet
occasionally to 7 feet. 
.tonight...northwest winds 15 to 25 knots backing west late.
freezing spray. scattered snow showers. waves subsiding to 1 to
3 feet. 
.wednesday...southwest winds 15 to 25 knots increasing to gales
to 35 knots. freezing spray in the morning. a chance of snow
showers. waves building to 4 to 7 feet occasionally to 9 feet. 
.wednesday night...west gales to 35 knots. a slight chance of
snow showers. waves 4 to 7 feet occasionally to 9 feet. 
.thursday...west gales to 35 knots veering northwest in the
afternoon. a chance of snow showers in the morning, then snow
showers likely in the afternoon. waves subsiding to 3 to 6 feet
occasionally to 8 feet, then building to 4 to 7 feet occasionally
to 9 feet. 
.thursday night...northwest winds 20 to 30 knots. freezing spray.
snow showers likely. waves 4 to 7 feet occasionally to 9 feet. 
.friday...northwest winds 15 to 25 knots diminishing to 10 to
20 knots. freezing spray. snow showers likely. waves subsiding to
1 to 3 feet. 
.saturday...west winds 10 to 20 knots backing southwest. waves
subsiding to calm to 2 feet. 

$$
fzus63 kmqt 190841
glfls 

lsz266-191645-
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-
341 am est tue jan 19 2021

...gale watch in effect from wednesday afternoon through thursday
morning...

.early this morning...northwest winds 20 to 30 knots. freezing
spray. numerous snow showers. waves 5 to 8 feet occasionally to
10 feet. 
.today...northwest winds 20 to 30 knots diminishing to 15 to
25 knots by late morning, then increasing to 20 to 30 knots by
mid afternoon. freezing spray. snow showers. waves subsiding to
3 to 6 feet occasionally to 8 feet. 
.tonight...northwest winds 20 to 30 knots diminishing to 15 to
25 knots by midnight, then becoming west 10 to 20 knots late.
freezing spray. snow showers in the evening. scattered snow
showers after midnight. waves subsiding to 3 to 5 feet
occasionally to 7 feet. 
.wednesday...southwest winds 15 to 25 knots becoming south gales
to 40 knots. freezing spray. a chance of snow showers. waves
building to 9 to 12 feet occasionally to 15 feet. 
.wednesday night...southwest gales to 35 knots veering west after
midnight. a chance of snow showers. waves subsiding to 8 to
11 feet occasionally to 14 feet. 
.thursday...west gales to 35 knots veering northwest in the
afternoon. a chance of snow showers in the morning, then snow
showers likely in the afternoon. waves subsiding to 6 to 9 feet
occasionally to 11 feet. 
.thursday night...northwest gales to 35 knots diminishing to
20 to 30 knots after midnight. freezing spray. snow showers.
waves subsiding to 5 to 8 feet occasionally to 10 feet. 
.friday...northwest winds 15 to 25 knots diminishing to 10 to
20 knots. freezing spray. snow showers likely. waves subsiding to
1 to 3 feet. 
.saturday...west winds 10 to 20 knots backing south. waves
subsiding to calm to 2 feet, then building to 2 to 4 feet. 

$$

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