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fzus63 kdtx 231348
glflh 
331 

open lake forecast for lake huron
national weather service detroit/pontiac mi
946 am edt thu mar 23 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 30.70 inches will build into the mid 
atlantic today. a warm front will lift into the region tonight 
before 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. meanwhile...low pressure system..at 
29.70 inches...will slowly track northeastward into the mid 
mississippi river valley this weekend.

lhz361-232000-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
946 am edt thu mar 23 2017

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


$$
fzus63 kdtx 231348
glflh 

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-
946 am edt thu mar 23 2017

.rest of today...south winds 10 to 15 knots increasing to 15 to
20 knots late in the afternoon. waves 1 to 3 feet building to
2 to 4 feet late in the afternoon. 
.tonight...south winds 15 to 20 knots decreasing to 10 to
15 knots early in the morning. a chance of rain late in the
evening. a chance of snow in the late evening and early morning.
rain after midnight. waves 3 to 5 feet. 
.friday...south winds 10 to 15 knots becoming southwest 5 to
10 knots in the late morning and afternoon. rain likely. waves
2 to 4 feet subsiding to 1 to 3 feet early in the afternoon. 
.friday night...north winds 5 to 10 knots becoming northeast
10 to 15 knots after midnight. rain. snow likely after midnight.
waves 1 to 3 feet. 
.saturday...northeast winds 15 to 20 knots increasing to 20 to
25 knots late in the morning...then becoming east 15 to 20 knots
late in the evening. snow...sleet likely and a chance of freezing
rain. rain. freezing rain likely late in the afternoon. waves
6 to 9 feet. waves occasionally around 12 feet. 
.sunday...east winds 15 to 20 knots decreasing to 5 to 10 knots.
freezing rain early in the morning. rain. a chance of snow after
midnight. waves 4 to 6 feet. waves occasionally around 8 feet. 
.monday...northeast winds 5 to 10 knots backing to the northwest
until early morning. a chance of rain early in the morning. a
chance of snow early in the morning...then a chance of rain after
midnight. waves 1 to 3 feet. 


$$
fzus63 kdtx 231348
glflh 

lhz462>464-232000-
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-
946 am edt thu mar 23 2017

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


$$
fzus63 klot 231358
glflm 
529 

open lake forecast for lake michigan
national weather service chicago/romeoville il
858 am cdt thu mar 23 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...high pressure of 30.6 inches over the eastern great 
lakes region will move southeast to the mid atlantic coast by 
late this afternoon. low pressure of 29.4 inches will then 
develop over the plains tonight into friday. as this occurs...a
cold front will gradually shift southward down the lake friday
before stalling out near the southern end of the lake saturday
morning. the low will weaken to around 29.7 inches as it moves 
slowly northeast over northern illinois this weekend.

lmz261-362-364-366-563-565-567-868-232115-
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 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-
858 am cdt thu mar 23 2017

sheboygan wi to pentwater mi north...

.rest of today...south winds 15 to 25 kt increasing to 30 kt
afternoon. waves 3 to 5 ft occasionally to 7 ft building to 4 to 
7 ft occasionally to 9 ft this afternoon. 
.tonight...south winds 15 to 25 kt. chance of rain showers 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
late. 
.friday...southwest winds 10 to 15 kt veering to north 10 to
20 kt. rain showers likely in the morning...then rain showers in
the afternoon. waves 2 to 4 ft. 
.friday night...northeast winds to 30 kt. rain showers likely in
the evening...then rain showers overnight. waves 3 to 5 ft
occasionally to 7 ft building to 4 to 6 ft occasionally to 8 ft
overnight. 
.saturday...east winds to 30 kt. chance of rain showers in the
morning...then rain showers likely in the afternoon. waves 4 to
7 ft occasionally to 9 ft. 
.saturday night...east winds 15 to 25 kt. rain showers likely.
waves 4 to 6 ft occasionally to 8 ft subsiding to 3 to 5 ft
occasionally to 7 ft overnight. 
.sunday...northeast winds 10 to 20 kt. chance of rain showers.
waves 2 to 4 ft. 
.monday...north winds 10 to 15 kt. waves 1 to 2 ft.  

$$
fzus63 klot 231358
glflm 

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 mar 23 2017

sheboygan wi to pentwater mi south...

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

$$
fzus63 kmqt 231346
glfls 
103 

open lake forecast for lake superior
national weather service marquette mi
946 am edt thu mar 23 2017

for waters beyond five nautical miles of shore on lake superior

.synopsis...30.6 inch high pressure centered over lower great
lakes this morning will drift to the east coast this evening as a
29.5 inch low pressure organizes over the western plains. a 29.9 
inch trough moves across the upper great lakes tonight. 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 30.6 inches over james bay saturday afternoon as the low 
weakens to 29.7 inches over western illinois. high pressure will 
lift move to new england on sunday while the low over illinois 
further weakens. a 29.9 inch ridge will build over the upper great
lakes monday. 

lsz162-232200-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
946 am edt thu mar 23 2017 /846 am cdt thu mar 23 2017/

.rest of today...south winds 10 to 20 knots. a slight chance of
snow by late morning. a chance of rain. waves 2 to 4 feet
subsiding to calm to 2 feet. 
.tonight...south winds 5 to 15 knots becoming northeast less than
10 knots after midnight. rain. a slight chance of snow after
midnight. waves calm to 2 feet. 
.friday...north winds 5 to 15 knots becoming northeast 10 to
20 knots by mid afternoon. a slight chance of rain. 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...east winds 20 to 30 knots diminishing to 15 to
25 knots by mid afternoon. waves 3 to 6 feet. 
.saturday night...east winds 15 to 25 knots diminishing to 10 to
20 knots after midnight. waves subsiding to 1 to 3 feet. 
.sunday...east winds 10 to 20 knots becoming northeast 5 to
15 knots. a chance of rain showers...possibly mixed with freezing
rain. waves subsiding to calm to 2 feet. 
.monday...north winds 5 to 15 knots backing northwest. waves calm
to 2 feet. 

$$
fzus63 kmqt 231346
glfls 

lsz267-232200-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
946 am edt thu mar 23 2017

.rest of today...south winds 15 to 25 knots. a slight chance of
rain by mid afternoon. waves 1 to 3 feet building to 3 to 5 feet.
.tonight...south winds 15 to 25 knots diminishing to 10 to
20 knots after midnight. a chance of rain and snow...possibly 
mixed with freezing rain and sleet. waves subsiding to calm to 2 
feet.
.friday...west winds 5 to 15 knots veering north by mid
afternoon. a slight chance of freezing rain through early
afternoon. a chance of rain. waves calm to 2 feet. 
.friday night...northeast winds 10 to 20 knots increasing to
15 to 25 knots after midnight. a slight chance of rain through
midnight. waves building to 3 to 5 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 freezing
rain...possibly mixed with rain showers and sleet. waves 1 to
3 feet. 
.sunday...east winds 10 to 20 knots diminishing to 5 to 15 knots.
rain showers likely...possibly mixed with freezing rain. waves
subsiding to calm to 2 feet. 
.monday...northwest winds 5 to 15 knots increasing to 10 to
20 knots. a chance of rain showers. a chance of snow showers.
waves calm to 2 feet. 

$$
fzus63 kmqt 231346
glfls 

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-
946 am edt thu mar 23 2017

.rest of today...south winds 15 to 25 knots diminishing to 10 to
20 knots by mid afternoon. a slight chance of snow by late
morning. a chance of rain. waves 2 to 4 feet subsiding to 1 to
3 feet. 
.tonight...south winds 5 to 15 knots veering west after midnight.
rain...possibly mixed with snow. waves subsiding to calm to
2 feet. 
.friday...north winds 5 to 15 knots becoming northeast 10 to
20 knots by mid afternoon. a slight chance of rain. waves
building to 1 to 3 feet. 
.friday night...northeast winds 15 to 25 knots. a slight chance
of rain through midnight. waves building to 3 to 6 feet. 
.saturday...east winds 15 to 25 knots. waves 3 to 6 feet. 
.saturday night...east winds 10 to 20 knots. waves subsiding to
2 to 4 feet. 
.sunday...east winds 5 to 15 knots backing northeast. a chance of
rain showers...possibly mixed with freezing rain. waves subsiding
to calm to 2 feet. 
.monday...north winds 5 to 15 knots backing west. a chance of
freezing rain. waves calm to 2 feet. 

$$
fzus63 kmqt 231346
glfls 

lsz264-232200-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
946 am edt thu mar 23 2017

.rest of today...south winds 15 to 25 knots. a slight chance of
snow by late morning. a chance of rain. waves 2 to 4 feet
building to 3 to 6 feet. 
.tonight...south winds 15 to 25 knots becoming southwest 5 to
15 knots after midnight. snow likely through midnight. rain. a
chance of snow after midnight. waves subsiding to 1 to 3 feet. 
.friday...north winds 5 to 15 knots increasing to 10 to 20 knots
by mid afternoon. a slight chance of rain through early
afternoon. waves subsiding to calm to 2 feet...then building to
1 to 3 feet. 
.friday night...northeast winds 15 to 25 knots. a slight chance
of rain...freezing rain and snow through midnight. waves building
to 3 to 6 feet. 
.saturday...east winds 10 to 20 knots. waves subsiding to 2 to
4 feet. 
.saturday night...east winds 15 to 25 knots diminishing to 10 to
20 knots after midnight. waves 2 to 4 feet. 
.sunday...east winds 5 to 15 knots backing northeast. a chance of
freezing rain. a chance of rain showers. waves subsiding to calm
to 2 feet. 
.monday...northwest winds 5 to 15 knots. waves calm to 2 feet. 

$$
fzus63 kmqt 231346
glfls 

lsz265-232200-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
946 am edt thu mar 23 2017

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

$$
fzus63 kmqt 231346
glfls 

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-
946 am edt thu mar 23 2017

.rest of today...south winds 15 to 25 knots increasing to 20 to
30 knots this mid afternoon. a slight chance of rain by mid 
afternoon. waves 3 to 5 feet building to 4 to 7 feet...then 
subsiding to 3 to 6 feet. 
.tonight...south winds 20 to 30 knots diminishing to 10 to
20 knots after midnight. rain...possibly mixed with snow and
freezing rain. waves building to 4 to 7 feet...then 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 increasing to
20 to 30 knots after midnight. waves building to 3 to 6 feet. 
.saturday...east winds 15 to 25 knots. waves subsiding to 3 to
5 feet. 
.saturday night...east winds 15 to 25 knots. a chance of rain
showers. a chance of freezing rain after midnight. waves
subsiding to 2 to 4 feet. 
.sunday...east winds 10 to 20 knots diminishing to 5 to 15 knots.
a chance of freezing rain. a chance of rain showers. waves
subsiding to calm to 2 feet. 
.monday...northwest winds 10 to 20 knots increasing to 15 to
25 knots. a chance of rain and snow showers. waves calm to
2 feet. 

$$

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