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fzus63 kdtx 221937
glflh 
802 

open lake forecast for lake huron
national weather service detroit/pontiac mi
337 pm edt wed mar 22 2017

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 of 30.60 inches will be over the central 
great lakes tonight...sliding to the east tomorrow. this will allow 
a warm front to lift into the region tomorrow night...stalling out 
on friday over northern lake huron. the frontal boundary will then 
drop south friday night into saturday, as high pressure builds over 
ontario with low pressure of 29.70 inches slowly tracking northeast 
out from the southern plains.

lhz361-230815-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
337 pm edt wed mar 22 2017

.tonight...west winds 10 to 15 knots becoming light and variable.
waves 2 feet or less. 
.thursday...south winds 5 to 10 knots increasing to 10 to
15 knots in the afternoon. waves 2 feet or less building to 3 to
5 feet late in the afternoon. 
.thursday night...south winds 10 to 20 knots. a chance of rain in
the evening. a chance of snow. rain...a chance of freezing rain 
and sleet after midnight. waves 4 to 6 feet. waves occasionally 
around 8 feet. 
.friday...south winds 5 to 10 knots early in the morning becoming
light and variable. rain. waves 2 to 4 feet subsiding to 1 to
3 feet in the late morning and afternoon. 
.friday night...northwest winds 5 to 10 knots veering to the
northeast in the late evening and early morning...then increasing
to 10 to 15 knots after midnight. rain likely. a chance of snow
late in the evening...then snow likely after midnight. waves 1 to
3 feet. 
.saturday...east winds 15 to 20 knots. snow likely and a chance
of rain. a chance of sleet late in the afternoon. waves 4 to
6 feet building to 5 to 7 feet late in the evening. waves
occasionally around 10 feet. 
.sunday...east winds 15 to 20 knots decreasing to 10 to 15 knots
until early morning. snow likely early in the morning. a chance
of rain. a chance of snow until early morning. waves 4 to 6 feet.
.monday...east winds 5 to 10 knots early in the morning becoming
light and variable. a chance of rain and snow early in the
morning. a chance of rain early in the evening...then rain and
snow likely in the late evening and early morning. waves 2 to
4 feet subsiding to 2 feet or less. waves occasionally around
8 feet. 


$$
fzus63 kdtx 221937
glflh 

lhz362-363-230815-
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-
337 pm edt wed mar 22 2017

.tonight...northwest winds 5 to 10 knots backing to the south
after midnight. waves 1 to 3 feet. 
.thursday...south winds 5 to 10 knots increasing to 15 to
20 knots. waves 1 to 3 feet building to 2 to 4 feet in the
afternoon. 
.thursday night...south winds 15 to 25 knots. gusts to 30 knots 
early in the evening. a chance of rain in the evening. a chance of
snow until early morning. rain and a chance of freezing rain 
after midnight. waves 4 to 6 feet. waves occasionally around 8 
feet. 
.friday...south winds 10 to 15 knots becoming southwest 5 to
10 knots in the late morning and afternoon. rain. waves 3 to
5 feet subsiding to 1 to 3 feet early in the afternoon. 
.friday night...northwest winds 5 to 10 knots veering to the
northeast in the late evening and early morning...then increasing
to 10 to 15 knots after midnight. rain. snow likely after
midnight. waves 1 to 3 feet building to 2 to 4 feet after
midnight. 
.saturday...northeast winds 15 to 20 knots with gusts to 30 knots
becoming east 20 to 25 knots with gusts to 30 knots. rain and
snow. waves 5 to 7 feet. waves occasionally around 10 feet. 
.sunday...east winds 15 to 20 knots becoming northeast 10 to
15 knots in the late evening and early morning. rain and snow.
waves 5 to 7 feet. waves occasionally around 10 feet. 
.monday...north winds 5 to 10 knots becoming light and variable.
a chance of rain and snow early in the morning. rain and snow
likely after midnight. waves 2 to 4 feet subsiding to 2 feet or
less. 


$$
fzus63 kdtx 221937
glflh 

lhz462>464-230815-
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-
337 pm edt wed mar 22 2017

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


$$
fzus63 klot 221946
glflm 
802 

open lake forecast for lake michigan
national weather service chicago/romeoville il
246 pm cdt wed mar 22 2017

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...strong high pressure of 30.6 inches over the western 
great lakes region will move southeast to the mid atlantic coast 
by thursday afternoon. low pressure of 29.4 inches will then 
develop over the plains thursday night into friday. the low will 
weaken to around 29.7 inches as it moves slowly northeast toward 
and into northern illinois over the weekend. the low reaches the 
eastern great lakes monday morning before dissipating.

lmz261-362-364-366-563-565-567-868-230330-
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-
246 pm cdt wed mar 22 2017

sheboygan wi to pentwater mi north...

.tonight...variable winds 5 to 10 kt becoming south 10 to 20 kt
overnight. waves 1 to 3 ft building to 2 to 4 ft. 
.thursday...south winds 15 to 25 kt increasing to 30 kt. slight
chance of rain showers in the afternoon. waves 3 to 5 ft
occasionally to 7 ft building to 5 to 8 ft occasionally to 10 ft.
.thursday night...south winds to 30 kt diminishing to 15 to
25 kt. rain showers with snow showers likely in the evening...
then rain showers overnight. waves 4 to 7 ft occasionally to 9 ft
subsiding to 4 to 6 ft occasionally to 8 ft. 
.friday...southwest winds 10 to 20 kt veering to north. rain
showers likely. waves 2 to 4 ft subsiding to 1 to 3 ft. 
.friday night...northeast winds 15 to 25 kt increasing to 30 kt.
rain showers likely with a chance of light freezing rain in the
evening...then rain showers overnight. waves 2 to 4 ft building
to 3 to 5 ft occasionally to 7 ft. 
.saturday...east winds to 30 kt. rain showers with a chance of
light freezing rain in the morning...then chance of rain showers
and light freezing rain in the afternoon. waves 4 to 7 ft
occasionally to 9 ft. 
.saturday night...east winds to 30 kt diminishing to 15 to 25 kt.
rain showers likely, chance of snow showers and light freezing
rain. waves 4 to 7 ft occasionally to 9 ft. 
.sunday...east winds 15 to 25 kt becoming northeast 10 to 20 kt.
chance of rain and snow showers. waves 3 to 5 ft occasionally to
7 ft. 
.monday...northeast winds 10 to 15 kt becoming north. waves 1 to
2 ft.  

$$
fzus63 klot 221946
glflm 

lmz080-669-671-673-675-777-779-870-872-874-876-878-230330-
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-
246 pm cdt wed mar 22 2017

sheboygan wi to pentwater mi south...

.tonight...east winds 10 to 15 kt becoming southeast 10 to 20
kt...and then becoming south late. waves 2 to 4 ft. 
.thursday...south winds 15 to 25 kt increasing to 30 kt. slight
chance of rain showers in the afternoon. waves 3 to 5 ft
occasionally to 7 ft building to 4 to 7 ft occasionally to 9 ft. 
.thursday night...south winds to 30 kt diminishing to 15 to
25 kt. chance of rain showers. waves 4 to 6 ft occasionally to
8 ft subsiding to 3 to 5 ft occasionally to 7 ft. 
.friday...south winds 15 to 25 kt. chance of rain showers. waves
3 to 5 ft occasionally to 7 ft. 
.friday night...south winds 10 to 20 kt becoming east. patchy
fog. rain showers likely in the evening...then rain showers
overnight. waves 2 to 4 ft. 
.saturday...east winds 15 to 25 kt increasing to 30 kt. patchy
fog. rain showers. waves 3 to 5 ft occasionally to 7 ft. 
.saturday night...east winds 15 to 25 kt. patchy fog. rain
showers likely. waves 3 to 5 ft occasionally to 7 ft. 
.sunday...east winds 15 to 25 kt becoming northeast 10 to 20 kt.
patchy fog. rain showers likely. waves 3 to 5 ft occasionally to
7 ft subsiding to 2 to 4 ft. 
.monday...north winds 10 to 15 kt. waves 1 to 2 ft.  

$$
fzus63 kmqt 222002
glfls 
019 

open lake forecast for lake superior
national weather service marquette mi
402 pm edt wed mar 22 2017

for waters beyond five nautical miles of shore on lake superior

.synopsis...30.6 inch high pressure centered over northern lake
michigan late this afternoon will drift to the east coast through
thursday as a 29.5 inch low pressure organizes over the western 
plains. on friday afternoon...this low will move into the central 
plains as 30.5 inch high pressure builds over northern ontario. 
the high will build to 30.7 inches over james bay saturday 
afternoon as the low weakens to 29.7 inches over northern 
illinois. high pressure will lift east of hudson bay on sunday 
while the low over illinois further weakens. a 30.1 inch ridge 
will build over the upper great lakes monday. 

lsz162-230415-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
402 pm edt wed mar 22 2017 /302 pm cdt wed mar 22 2017/

.late this afternoon...east winds 5 to 15 knots. waves calm to
2 feet. 
.tonight...southeast winds 5 to 15 knots becoming south 10 to
20 knots after midnight. a slight chance of rain and snow showers
after midnight. waves building to 1 to 3 feet. 
.thursday...south winds 15 to 25 knots diminishing to 10 to
20 knots by mid afternoon. a chance of rain showers...possibly
mixed with snow. waves building to 2 to 4 feet...then subsiding
to calm to 2 feet. 
.thursday night...south winds 5 to 15 knots veering west after
midnight. rain. waves calm to 2 feet. 
.friday...north winds 5 to 15 knots veering northeast by mid
afternoon. a slight chance of rain south. waves calm to 2 feet. 
.friday night...northeast winds 15 to 25 knots increasing to
20 to 30 knots after midnight. waves building to 3 to 6 feet. 
.saturday...northeast winds 20 to 30 knots veering east by mid
afternoon. waves 3 to 6 feet. 
.saturday night...east winds 15 to 25 knots. a chance of rain...
possibly mixed with freezing rain. a chance of sleet after
midnight. waves subsiding to 2 to 4 feet. 
.sunday...east winds 10 to 20 knots becoming northeast 5 to
15 knots. rain likely. waves subsiding to calm to 2 feet. 
.monday...northeast winds 5 to 15 knots backing north. a chance
of rain. waves calm to 2 feet. 

$$
fzus63 kmqt 222002
glfls 

lsz263-230415-
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-
402 pm edt wed mar 22 2017

.late this afternoon...southwest winds 5 to 15 knots. waves calm
to 2 feet. 
.tonight...southeast winds 5 to 15 knots becoming south 10 to
20 knots after midnight. a slight chance of rain and snow showers
after midnight. waves building to 2 to 4 feet. 
.thursday...south winds 15 to 25 knots. a chance of rain
showers...possibly mixed with snow. waves building to 3 to
5 feet...then subsiding to 2 to 4 feet. 
.thursday night...south winds 10 to 20 knots becoming southwest
5 to 15 knots after midnight. rain...possibly mixed with snow. 
waves subsiding to calm to 2 feet.
.friday...northwest winds 5 to 15 knots becoming northeast 10 to
20 knots by mid afternoon. a slight chance of rain south. waves 
calm to 2 feet. 
.friday night...northeast winds 15 to 25 knots. waves building to
3 to 6 feet. 
.saturday...east winds 15 to 25 knots. waves 3 to 6 feet. 
.saturday night...east winds 15 to 25 knots diminishing to 10 to
20 knots after midnight. a chance of rain. a chance of sleet
after midnight. waves 3 to 5 feet. 
.sunday...east winds 5 to 15 knots backing northeast. a chance of
rain and snow. waves subsiding to calm to 2 feet.
.monday...north winds 5 to 15 knots. a chance of rain. waves calm
to 2 feet. 

$$
fzus63 kmqt 222002
glfls 

lsz264-230415-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
402 pm edt wed mar 22 2017

.late this afternoon...variable winds less than 10 knots becoming
southwest winds 5 to 15 knots. waves calm to 2 feet. 
.tonight...south winds 10 to 20 knots. waves building to 2 to 4 
feet. 
.thursday...south winds 15 to 25 knots increasing to 20 to
30 knots by mid afternoon. isolated snow showers in the morning.
scattered rain and snow showers by mid afternoon. waves building 
to 4 to 7 feet... then subsiding to 3 to 6 feet. 
.thursday night...south winds 15 to 25 knots becoming southwest
5 to 15 knots after midnight. rain...possibly mixed with snow.
waves subsiding to 1 to 3 feet. 
.friday...northwest winds 5 to 15 knots becoming north 10 to
20 knots by mid afternoon. waves subsiding to calm to 2 feet. 
.friday night...northeast winds 15 to 25 knots diminishing to
10 to 20 knots after midnight. waves building to 3 to 6 feet. 
.saturday...east winds 10 to 20 knots. waves 3 to 5 feet. 
.saturday night...east winds 15 to 25 knots. a chance of rain.
waves 3 to 6 feet. 
.sunday...east winds 10 to 20 knots diminishing to 5 to 15 knots.
a chance of rain and snow. waves subsiding to calm to 2 feet.
.monday...north winds 5 to 15 knots. a chance of rain. waves calm
to 2 feet. 

$$
fzus63 kmqt 222002
glfls 

lsz265-230415-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
402 pm edt wed mar 22 2017

.late this afternoon...east winds 5 to 15 knots. waves calm to 2 
feet. 
.tonight...southeast winds 10 to 20 knots veering south after
midnight. waves building to 1 to 3 feet. 
.thursday...south winds 15 to 25 knots. scattered snow showers 
possibly mixed with rain by mid afternoon. waves building to 3 to 
5 feet. 
.thursday night...south winds 15 to 25 knots diminishing to 5 to
15 knots after midnight. rain...possibly mixed with snow. waves 
subsiding to calm to 2 feet. 
.friday...west winds 5 to 15 knots becoming north 10 to 20 knots
by mid afternoon. a chance of rain. waves calm to 2 feet. 
.friday night...northeast winds 15 to 25 knots. waves building to
3 to 6 feet. 
.saturday...east winds 15 to 25 knots. waves 3 to 5 feet. 
.saturday night...east winds 15 to 25 knots. a chance of rain. a
chance of freezing rain and sleet after midnight. waves 3 to
5 feet. 
.sunday...east winds 10 to 20 knots. a chance of rain. waves
subsiding to calm to 2 feet. 
.monday...north winds 10 to 20 knots. a chance of rain. a chance
of snow showers. waves calm to 2 feet. 

$$
fzus63 kmqt 222002
glfls 

lsz266-230415-
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-
402 pm edt wed mar 22 2017

.late this afternoon...variable winds less than 10 knots becoming
southwest winds 5 to 15 knots. waves calm to 2 feet. 
.tonight...south winds 10 to 20 knots increasing to 15 to
25 knots after midnight. waves building to 3 to 5 feet. 
.thursday...south winds 20 to 30 knots. a few gale force gusts to
35 knots in the afternoon. scattered snow showers possibly mixed 
with rain by mid afternoon. waves building to 4 to 7 feet. 
.thursday night...south winds 20 to 30 knots diminishing to 10 to
20 knots after midnight. a few gale force gusts to 35 knots in the
evening. rain...possibly mixed with snow. waves subsiding to 1 to
3 feet. 
.friday...northwest winds 5 to 15 knots becoming north 10 to
20 knots by mid afternoon. a chance of rain. waves subsiding to
calm to 2 feet...then building to 1 to 3 feet. 
.friday night...northeast winds 15 to 25 knots. waves building to
3 to 6 feet. 
.saturday...east winds 15 to 25 knots. waves 3 to 5 feet. 
.saturday night...east winds 15 to 25 knots. a chance of rain...
possibly mixed with snow. a chance of freezing rain and sleet
after midnight. waves 3 to 6 feet. 
.sunday...east winds 10 to 20 knots. a chance of rain...freezing 
rain and sleet. waves subsiding to calm to 2 feet. 
.monday...north winds 10 to 20 knots. a chance of rain. waves
calm to 2 feet. 

$$
fzus63 kmqt 222002
glfls 

lsz267-230415-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
402 pm edt wed mar 22 2017

.late this afternoon...west winds 5 to 15 knots. waves calm to
2 feet. 
.tonight...south winds 5 to 15 knots increasing to 10 to 20 knots
after midnight. waves building to 2 to 4 feet. 
.thursday...south winds 15 to 25 knots increasing to 20 to
30 knots with a few gale force gusts to 35 knots by mid 
afternoon. scattered snow showers possibly mixed with rain by mid
afternoon. waves building to 3 to 5 feet. 
.thursday night...south winds 20 to 30 knots diminishing to 10 to
20 knots after midnight. a few gale force gusts to 35 knots in the
evening. rain. snow likely through midnight. a chance of snow 
after midnight. waves subsiding to 1 to 3 feet. 
.friday...west winds 5 to 15 knots veering north by mid
afternoon. a chance of rain. waves subsiding to calm to 2 feet. 
.friday night...northeast winds 15 to 25 knots. waves building to
2 to 4 feet. 
.saturday...east winds 15 to 25 knots. waves subsiding to 1 to
3 feet. 
.saturday night...east winds 15 to 25 knots. a chance of snow. a
chance of sleet after midnight. waves building to 2 to 4 feet. 
.sunday...east winds 10 to 20 knots. a chance of rain...freezing 
rain and sleet. waves subsiding to calm to 2 feet. 
.monday...north winds 10 to 20 knots. a chance of rain...then
snow showers...possibly mixed with rain. waves calm to 2 feet. 

$$

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