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fzus63 kdtx 181350
glflh 
843 

open lake forecast for lake huron
national weather service detroit/pontiac mi
950 am edt fri aug 18 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...low pressure...29.50 inches will lift from the straits 
to central quebec by saturday. high pressure...30.10 inches will 
build across the upper ohio river valley saturday night into sunday.

lhz361-182030-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
950 am edt fri aug 18 2017

.rest of today...west winds 15 to 20 knots increasing to 20 to
25 knots with gusts to 30 knots in the afternoon. a chance of
showers in the late morning and early afternoon. waves 5 to
7 feet. waves occasionally around 10 feet. 
.tonight...west winds 20 to 25 knots with gusts to 30 knots
becoming northwest 15 to 20 knots after midnight. waves 5 to
7 feet. waves occasionally around 10 feet. 
.saturday...west winds 10 to 15 knots. waves 3 to 5 feet
subsiding to 1 to 3 feet early in the afternoon. 
.saturday night...west winds 5 to 10 knots. waves 2 feet or less.
.sunday...southwest winds 5 to 10 knots. waves 2 feet or less. 
.monday...southwest winds 5 to 10 knots. a chance of showers and
thunderstorms. waves 2 feet or less. 
.tuesday...light and variable winds becoming southeast 5 to
10 knots early in the evening...then becoming north 10 to
15 knots in the late evening and early morning. a chance of
showers and thunderstorms. waves 2 feet or less building to 2 to
4 feet in the late evening and early morning. 


$$
fzus63 kdtx 181350
glflh 

lhz362-363-182030-
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-
950 am edt fri aug 18 2017

.rest of today...southwest winds 15 to 25 knots. a chance of 
showers in the late morning and early afternoon. waves 6 to 9 
feet. waves occasionally around 12 feet. 
.tonight...west winds 15 to 20 knots. gusts to 30 knots in the
evening. waves 6 to 9 feet. waves occasionally around 12 feet. 
.saturday...west winds 15 to 20 knots decreasing to 5 to
10 knots. waves 4 to 6 feet. waves occasionally around 8 feet. 
.saturday night...southwest winds 5 to 10 knots. waves 1 to
3 feet. 
.sunday...southwest winds 5 to 10 knots becoming south 10 to
15 knots late in the afternoon. waves 1 to 3 feet. 
.monday...southwest winds 10 to 15 knots decreasing to 5 to
10 knots until early morning. a chance of showers and
thunderstorms. waves 1 to 3 feet building to 2 to 4 feet in the
late morning and early afternoon...then subsiding to 1 to 3 feet
until early morning. 
.tuesday...southwest winds 5 to 10 knots backing to the southeast
early in the evening...then becoming west 15 to 20 knots in the
late evening and early morning. a chance of showers and
thunderstorms early in the morning...then showers and
thunderstorms likely in the afternoon and evening. a chance of
showers and thunderstorms in the late evening and early morning.
waves 2 feet or less building to 3 to 5 feet in the late evening
and early morning. 


$$
fzus63 kdtx 181350
glflh 

lhz462>464-182030-
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-
950 am edt fri aug 18 2017

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


$$
fzus63 klot 181339
glflm 

lmz080-669-671-673-675-777-779-870-872-874-876-878-182130-
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-
839 am cdt fri aug 18 2017

sheboygan wi to pentwater mi south...

.rest of today...west winds to 20 to 25 kt diminishing to 10 to 
20 kt by mid afternoon. waves 5 to 8 ft occasionally to 10 ft 
subsiding to 3 to 6 ft occasionally to 8 ft by late afternoon.
.tonight...west winds 10 to 20 kt becoming northwest 10 to 15 kt
late. chance of showers and slight chance of thunderstorms late
this evening and overnight. waves 3 to 5 ft subsiding to 2 to 4 
ft.
.saturday...northwest winds 10 to 15 kt backing to southwest.
waves 1 to 3 ft. 
.saturday night...southwest winds 10 to 15 kt. waves 1 to 3 ft. 
.sunday...southwest winds 10 to 15 kt becoming south 10 to 20 kt.
waves building to 2 to 4 ft. 
.sunday night...south winds 10 to 20 kt. waves 2 to 4 ft. 
.monday...south winds 10 to 20 kt. chance of showers. waves 2 to 
4 ft. 
.tuesday...southwest winds 10 to 20 kt becoming northwest 15 to 
25 kt. showers likely with a chance of thunderstorms. waves
building to 3 to 6 ft occasionally to 8 ft. 

$$
fzus63 klot 181339
glflm 
619 

open lake forecast for lake michigan
national weather service chicago/romeoville il
839 am cdt fri aug 18 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...low pressure of 29.5 inches east of the soo this 
morning will move slowly to western quebec by late tonight, and to
northern quebec by saturday night. meanwhile, weak high pressure 
of 29.9 inches will build from the missouri river valley tonight 
to the southern great lakes on saturday. this high will build to 
30.1 inches by sunday as it expands across the eastern third of 
the united states. a trough of low pressure averaging 29.9 inches 
and an associated cold front will move slowly southeast over lake 
michigan on monday night and early tuesday.

lmz261-362-364-366-563-565-567-868-182130-
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-
839 am cdt fri aug 18 2017

sheboygan wi to pentwater mi north...

.rest of today...west winds to 30 kt becoming northwest and 
diminishing to 15 to 25 kt by early afternoon. scattered showers
ending this morning far north. waves 4 to 7 ft occasionally to 9 
ft subsiding to 3 to 6 ft occasionally to 8 ft this afternoon. 
.tonight...northwest winds 10 to 20 kt becoming west 10 to 15 kt
late. waves 3 to 5 ft subsiding to 1 to 3 ft. 
.saturday...west winds 10 to 15 kt becoming southwest 10 to
20 kt in the afternoon. waves 1 to 3 ft. 
.saturday night...southwest winds 10 to 15 kt. waves 1 to 3 ft. 
.sunday...southwest winds 10 to 20 kt becoming south 15 to 25 kt.
waves 1 to 3 ft building to 3 to 5 ft. 
.sunday night...south winds 15 to 25 kt becoming southwest 10 to
20 kt. waves 3 to 5 ft. 
.monday...southwest winds 10 to 20 kt. chance of showers. waves
2 to 4 ft. 
.tuesday...east winds 10 to 20 kt backing to north 15 to 25 kt.
chance of showers. waves 3 to 5 ft.  

$$
fzus63 kmqt 181403
glfls 

lsz266-182215-
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-
1003 am edt fri aug 18 2017

.rest of today...northwest winds 20 to 30 knots. a few gale force
gusts to 35 knots through early afternoon. patchy fog. scattered 
showers. waves 4 to 8 feet occasionally to 10 feet.
.tonight...northwest winds 10 to 20 knots backing west late. a
slight chance of showers through midnight. waves subsiding to
1 to 3 feet. 
.saturday...west winds 5 to 15 knots. waves subsiding to calm to
2 feet, then building to 1 to 3 feet. 
.saturday night...southwest winds 5 to 15 knots increasing to
10 to 20 knots after midnight. waves 1 to 3 feet. 
.sunday...southwest winds 10 to 20 knots backing south by mid
afternoon. waves 1 to 3 feet. 
.sunday night...southwest winds 10 to 20 knots becoming west 5 to
15 knots after midnight. a chance of showers. waves subsiding to
calm to 2 feet, then building to 1 to 3 feet. 
.monday...west winds 5 to 15 knots. a chance of showers. waves
calm to 2 feet. 
.tuesday...north winds 10 to 20 knots backing northwest. a chance
of showers. waves building to 1 to 3 feet. 

$$
fzus63 kmqt 181403
glfls 

lsz267-182215-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
1003 am edt fri aug 18 2017

.rest of today...northwest winds 20 to 30 knots. a few gale force
gusts to 35 knots through early afternoon. patchy fog. scattered 
showers. waves 3 to 6 feet occasionally to 8 feet building to 5 to
8 feet occasionally to 10 feet. 
.tonight...northwest winds 20 to 30 knots diminishing to 10 to
20 knots. a slight chance of showers through midnight. patchy fog
after midnight. waves subsiding to 1 to 3 feet. 
.saturday...west winds 10 to 20 knots diminishing to 5 to
15 knots late. patchy fog through early afternoon. waves
subsiding to calm to 2 feet. 
.saturday night...southwest winds 5 to 15 knots. waves calm to
2 feet. 
.sunday...southwest winds 5 to 15 knots becoming south 10 to
20 knots by mid afternoon. waves calm to 2 feet. 
.sunday night...south winds 10 to 20 knots becoming southwest
5 to 15 knots after midnight. a chance of showers. waves calm to
2 feet. 
.monday...southwest winds 5 to 15 knots veering north. a chance
of showers. waves calm to 2 feet. 
.tuesday...north winds 10 to 20 knots backing northwest. a chance
of showers. waves calm to 2 feet. 

$$
fzus63 kmqt 181403
glfls 
572 

open lake forecast for lake superior
national weather service marquette mi
1003 am edt fri aug 18 2017

for waters beyond five 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...low pressure of 29.5 inches over sault saint marie 
will reach southwest quebec tonight. high pressure of 29.9 inches
will reach the western great lakes and then expand southward over
the ohio river valley saturday into sunday. on sunday afternoon a
29.8 inch trough moves into western lake superior and then tracks
east through sunday night. this trough will stall out across the 
upper great lakes through monday, followed by a 30.0 inch area of 
high pressure dropping south across the upper mississippi valley 
on tuesday.

lsz162-182215-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1003 am edt fri aug 18 2017 /903 am cdt fri aug 18 2017/

.rest of today...northwest winds 5 to 15 knots backing west in
the afternoon. waves 2 to 4 feet subsiding to calm to 2 feet. 
.tonight...west winds 5 to 15 knots. a slight chance of showers
and isolated thunderstorms through midnight. waves calm to
2 feet. 
.saturday...west winds 10 to 20 knots backing southwest in the
afternoon. waves calm to 2 feet. 
.saturday night...southwest winds 10 to 20 knots. waves calm to
2 feet. 
.sunday...southwest winds 10 to 20 knots. waves building to 1 to
3 feet, then subsiding to calm to 2 feet. 
.sunday night...west winds 5 to 15 knots veering northwest after
midnight. a chance of showers. waves calm to 2 feet. 
.monday...northeast winds 5 to 15 knots backing north. waves calm
to 2 feet. 
.tuesday...northwest winds 10 to 20 knots. waves calm to 2 feet. 

$$
fzus63 kmqt 181403
glfls 

lsz263-182215-
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-
1003 am edt fri aug 18 2017

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

$$
fzus63 kmqt 181403
glfls 

lsz264-182215-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
1003 am edt fri aug 18 2017

.rest of today...northwest winds 15 to 25 knots diminishing to
10 to 20 knots late. patchy fog by late morning. waves 3 to
6 feet occasionally to 8 feet subsiding to 2 to 4 feet. 
.tonight...west winds 10 to 20 knots diminishing to 5 to 15 knots
after midnight. a slight chance of showers through midnight.
waves subsiding to calm to 2 feet. 
.saturday...west winds 5 to 15 knots backing southwest in the
afternoon. waves building to 1 to 3 feet. 
.saturday night...southwest winds 5 to 15 knots. waves 1 to
3 feet. 
.sunday...southwest winds 5 to 15 knots. waves 1 to 3 feet. 
.sunday night...west winds 5 to 15 knots. waves subsiding to calm
to 2 feet. 
.monday...southwest winds 5 to 15 knots veering west. waves calm
to 2 feet. 
.tuesday...west winds 5 to 15 knots veering northwest. a chance
of showers. waves calm to 2 feet. 

$$
fzus63 kmqt 181403
glfls 

lsz265-182215-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
1003 am edt fri aug 18 2017

.rest of today...northwest winds 20 to 30 knots diminishing to
15 to 25 knots late. isolated showers by late morning. patchy
fog. waves 4 to 7 feet occasionally to 9 feet subsiding to 3 to
5 feet occasionally to 7 feet. 
.tonight...northwest winds 10 to 20 knots backing west after
midnight. a slight chance of showers through midnight. waves
subsiding to calm to 2 feet. 
.saturday...west winds 5 to 15 knots increasing to 10 to 20 knots
late. waves calm to 2 feet. 
.saturday night...southwest winds 10 to 20 knots. waves calm to
2 feet. 
.sunday...southwest winds 10 to 20 knots backing south by mid
afternoon. a chance of showers by mid afternoon. waves calm to
2 feet. 
.sunday night...southwest winds 10 to 20 knots becoming west 5 to
15 knots after midnight. a chance of showers. waves calm to
2 feet. 
.monday...west winds 5 to 15 knots. waves calm to 2 feet. 
.tuesday...north winds 10 to 20 knots backing northwest. a chance
of showers. waves calm to 2 feet. 

$$

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