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fzus63 kdtx 250741
glflh 
001 

open lake forecast for lake huron
national weather service detroit/pontiac mi
341 am edt mon sep 25 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, 30.10 inches, will hold across the 
central and eastern great lakes today through tuesday. the next low 
pressure system and cold front, 29.80 inches, is then due to cross 
the region tuesday night and wednesday. cooler high pressure will 
follow the front thursday also followed quickly by another cold 
front during friday.

lhz361-252015-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
341 am edt mon sep 25 2017

.today...south winds 5 to 10 knots backing to the east late in
the afternoon. waves 2 feet or less. 
.tonight...east winds 5 to 10 knots in the evening becoming light
and variable. waves 2 feet or less. 
.tuesday...light and variable winds. waves 2 feet or less. 
.tuesday night...light and variable winds becoming south 5 to
10 knots in the late evening and early morning...then becoming
west 10 to 15 knots after midnight. a chance of showers and
thunderstorms. waves 2 feet or less. 
.wednesday...west winds 10 to 15 knots becoming northwest 15 to
20 knots late in the morning...then decreasing to 10 to 15 knots
late in the evening. a chance of showers and thunderstorms early
in the morning. waves 3 to 5 feet. 
.thursday...northwest winds 5 to 10 knots backing to the
southwest until early morning. a chance of showers in the
evening. rain showers likely after midnight. waves 2 to 4 feet
subsiding to 2 feet or less. 
.friday...southwest winds 10 to 15 knots veering to the west in
the late morning and early afternoon...then becoming north 15 to
20 knots until early morning. showers likely early in the
morning...then a chance of showers until early evening. waves
2 to 4 feet. 


$$
fzus63 kdtx 250741
glflh 

lhz362-363-252015-
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-
341 am edt mon sep 25 2017

.today...south winds 5 to 10 knots. waves 2 feet or less. 
.tonight...southeast winds 5 to 10 knots. waves 2 feet or less. 
.tuesday...south winds 5 to 10 knots. waves 2 feet or less. 
.tuesday night...south winds 5 to 10 knots. waves 2 feet or less.
.wednesday...west winds 10 to 15 knots becoming northwest 15 to
20 knots with gusts to 30 knots. waves 3 to 5 feet building to
5 to 7 feet late in the afternoon. waves occasionally around
10 feet. 
.thursday...northwest winds 10 to 15 knots decreasing to 5 to
10 knots in the late morning and early afternoon...then backing
to the west early in the evening backing to the south in the late
evening and early morning. a chance of showers after midnight.
waves 4 to 6 feet subsiding to 1 to 3 feet until early morning.
waves occasionally around 8 feet. 
.friday...southwest winds 15 to 20 knots with gusts to 30 knots
becoming north 20 to 25 knots with gusts to 30 knots until early
morning. a chance of showers. waves 3 to 5 feet. 


$$
fzus63 kdtx 250741
glflh 

lhz462>464-252015-
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-
341 am edt mon sep 25 2017

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


$$
fzus63 klot 250751
glflm 
015 

open lake forecast for lake michigan
national weather service chicago/romeoville il
251 am cdt mon sep 25 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 29.7 inches over ontario will move to
james bay today...while high pressure of 30.1 inches slowly 
drifts from the eastern great lakes toward new england and 
weakens. another low of 29.7 inches will lift across the northern 
great lakes tuesday and will trail a cold front across the lake 
tuesday night. high pressure of 30.2 inches will spread across the
great plains into illinois and indiana through thursday.

lmz261-362-364-366-563-565-567-868-251530-
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-
251 am cdt mon sep 25 2017

sheboygan wi to pentwater mi north...

.today...south winds 10 to 20 kt diminishing to 10 to 15 kt.
waves 1 to 3 ft. 
.tonight...south winds 10 to 15 kt becoming southeast. waves 1 to
2 ft. 
.tuesday...south winds 10 to 15 kt becoming southwest 10 to
20 kt. chance of showers in the afternoon. waves 1 to 2 ft. 
.tuesday night...west winds 10 to 20 kt becoming northwest.
chance of showers in the evening. waves 1 to 3 ft building to
2 to 4 ft. 
.wednesday...northwest winds 10 to 20 kt. waves 2 to 4 ft. 
.wednesday night...northwest winds 10 to 20 kt. waves 2 to 4 ft. 
.thursday...west winds 10 to 15 kt becoming southwest 10 to
20 kt. waves 2 to 4 ft. 
.friday...northwest winds to 30 kt becoming north. waves 6 to
9 ft occasionally to 12 ft building to 7 to 10 ft occasionally to
13 ft.  

$$
fzus63 klot 250751
glflm 

lmz080-669-671-673-675-777-779-870-872-874-876-878-251530-
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-
251 am cdt mon sep 25 2017

sheboygan wi to pentwater mi south...

.today...south winds 10 to 15 kt becoming southeast. waves 1 to
3 ft. 
.tonight...southeast winds 10 to 15 kt becoming south 5 to 10 kt.
waves 1 to 2 ft. 
.tuesday...south winds 10 to 15 kt. waves 1 to 2 ft. 
.tuesday night...west winds 10 to 20 kt becoming northwest. waves
1 to 2 ft building to 2 to 4 ft. 
.wednesday...northwest winds 10 to 20 kt. waves 3 to 5 ft. 
.wednesday night...north winds 10 to 20 kt. waves 3 to 5 ft.
.thursday...northwest winds 10 to 15 kt becoming west. waves 2 to
4 ft. 
.friday...northwest winds to 30 kt becoming north. waves 7 to
10 ft occasionally to 13 ft.  

$$
fzus63 kmqt 250754
glfls 
192 

open lake forecast for lake superior
national weather service marquette mi
354 am edt mon sep 25 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 29.8 inches over western ontario will
will reach western quebec by this afternoon dragging a 29.9 inch 
trough across lake superior. low pressure of 29.9 inches will 
develop over western wisconsin on the tail end of the trough and 
move over lake superior through tuesday night. high pressure of 
30.1 inches will build into the upper great lakes for wednesday 
into early thursday. a low pressure trough of 30.0 inches will 
drop out of canada across lake superior late thursday afternoon. 
high pressure ridging of 30.4 inches will quickly build into the 
upper lakes behind the trough for thursday night and friday.

lsz162-251600-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
354 am edt mon sep 25 2017 /254 am cdt mon sep 25 2017/

.early this morning...west winds 10 to 20 knots. a chance of
showers and a slight chance of thunderstorms. waves calm to
2 feet. 
.today...west winds 5 to 15 knots veering north late. a chance of
showers. a chance of thunderstorms by mid afternoon. waves calm
to 2 feet. 
.tonight...northeast winds 10 to 20 knots increasing to 15 to
25 knots late. showers likely and a slight chance of
thunderstorms. waves building to 3 to 6 feet occasionally to
8 feet. 
.tuesday...northeast winds 15 to 25 knots diminishing to 10 to
20 knots in the afternoon, then backing north late. showers
likely through early afternoon, then a chance of showers by mid
afternoon. waves subsiding to 2 to 4 feet. 
.tuesday night...northwest winds 10 to 20 knots increasing to
15 to 25 knots after midnight. a chance of showers. waves
subsiding to 1 to 3 feet, then building to 2 to 4 feet. 
.wednesday...northwest winds 15 to 25 knots becoming west 10 to
20 knots by mid afternoon. waves subsiding to calm to 2 feet. 
.wednesday night...west winds 10 to 20 knots. waves calm to
2 feet. 
.thursday...west winds 10 to 20 knots becoming north 15 to
25 knots. a chance of showers. waves building to 3 to 5 feet
occasionally to 7 feet. 
.friday...north winds 15 to 25 knots diminishing to 5 to
15 knots. waves subsiding to calm to 2 feet. 

$$
fzus63 kmqt 250754
glfls 

lsz263-251600-
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-
354 am edt mon sep 25 2017

.early this morning...southwest winds 5 to 15 knots. a slight
chance of showers and thunderstorms. waves 1 to 3 feet. 
.today...west winds 5 to 15 knots becoming northwest less than
10 knots in the afternoon, then becoming north 5 to 15 knots
late. a chance of showers and thunderstorms. waves subsiding to
calm to 2 feet. 
.tonight...northeast winds 10 to 20 knots. a chance of showers
through midnight. a chance of thunderstorms. showers likely after
midnight. waves building to 3 to 6 feet occasionally to 8 feet. 
.tuesday...northeast winds 15 to 25 knots diminishing to 10 to
20 knots in the afternoon. showers likely through early
afternoon, then a chance of showers by mid afternoon. waves
subsiding to 3 to 5 feet occasionally to 7 feet. 
.tuesday night...northwest winds 5 to 15 knots increasing to
10 to 20 knots after midnight. a chance of showers. waves
subsiding to 2 to 4 feet. 
.wednesday...northwest winds 10 to 20 knots becoming west 5 to
15 knots by mid afternoon. waves subsiding to 1 to 3 feet. 
.wednesday night...west winds 5 to 15 knots. waves subsiding to
calm to 2 feet, then building to 1 to 3 feet. 
.thursday...west winds 10 to 20 knots becoming north 15 to
25 knots. a chance of showers. waves building to 3 to 6 feet
occasionally to 8 feet. 
.friday...north winds 15 to 25 knots diminishing to 5 to
15 knots. waves subsiding to calm to 2 feet. 

$$
fzus63 kmqt 250754
glfls 

lsz264-251600-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
354 am edt mon sep 25 2017

.early this morning...southwest winds 5 to 15 knots. a slight
chance of showers and thunderstorms. waves 2 to 4 feet subsiding
to 1 to 3 feet. 
.today...west winds 5 to 15 knots veering north late. a slight
chance of thunderstorms through early afternoon. a slight chance
of showers. waves subsiding to calm to 2 feet. 
.tonight...north winds 5 to 15 knots veering northeast after
midnight, then increasing to 10 to 20 knots late. a slight chance
of thunderstorms through midnight. a chance of showers. waves
building to 3 to 5 feet occasionally to 7 feet. 
.tuesday...northeast winds 10 to 20 knots. showers through early
afternoon, then a chance of showers by mid afternoon. waves
building to 3 to 6 feet occasionally to 8 feet. 
.tuesday night...northwest winds 10 to 20 knots increasing to
15 to 25 knots after midnight. a chance of showers. waves
subsiding to 1 to 3 feet, then building to 2 to 4 feet. 
.wednesday...northwest winds 15 to 25 knots diminishing to 10 to
20 knots by mid afternoon. waves building to 3 to 5 feet
occasionally to 7 feet, then subsiding to 1 to 3 feet. 
.wednesday night...west winds 5 to 15 knots. waves subsiding to
calm to 2 feet. 
.thursday...west winds 5 to 15 knots becoming north 20 to
30 knots. a chance of showers. waves building to 2 to 4 feet,
then subsiding to 1 to 3 feet. 
.friday...north winds 20 to 30 knots diminishing to 10 to
20 knots. waves subsiding to calm to 2 feet. 

$$
fzus63 kmqt 250754
glfls 

lsz265-251600-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
354 am edt mon sep 25 2017

.early this morning...southwest winds 10 to 20 knots. waves 1 to
3 feet subsiding to calm to 2 feet. 
.today...southwest winds 5 to 15 knots veering northwest in the
afternoon, then becoming north 10 to 20 knots late. a slight
chance of showers and thunderstorms by mid afternoon. waves calm
to 2 feet. 
.tonight...north winds 10 to 20 knots diminishing to 5 to
15 knots after midnight, then veering northeast late. a chance of
showers and thunderstorms. waves building to 2 to 4 feet. 
.tuesday...east winds 5 to 15 knots increasing to 10 to 20 knots
in the afternoon, then backing northeast late. a chance of
showers through early afternoon. a slight chance of
thunderstorms. showers likely by mid afternoon. waves subsiding
to calm to 2 feet. 
.tuesday night...northwest winds 10 to 20 knots increasing to
20 to 30 knots after midnight. a chance of showers. waves
building to 2 to 4 feet. 
.wednesday...northwest winds 20 to 30 knots diminishing to 15 to
25 knots by mid afternoon. waves building to 3 to 5 feet
occasionally to 7 feet, then subsiding to 1 to 3 feet. 
.wednesday night...west winds 10 to 20 knots. waves subsiding to
calm to 2 feet. 
.thursday...west winds 10 to 20 knots becoming northwest 20 to
30 knots. a chance of showers. waves building to 6 to 9 feet
occasionally to 11 feet. 
.friday...north winds 20 to 30 knots diminishing to 10 to
20 knots. waves building to 7 to 10 feet occasionally to 13 feet,
then subsiding to 1 to 3 feet. 

$$
fzus63 kmqt 250754
glfls 

lsz266-251600-
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-
354 am edt mon sep 25 2017

.early this morning...south winds 10 to 20 knots. waves 2 to
4 feet. 
.today...southwest winds 5 to 15 knots veering west in the
afternoon, then veering north late. a slight chance of showers
and thunderstorms by mid afternoon. waves subsiding to calm to
2 feet. 
.tonight...north winds 5 to 15 knots increasing to 10 to 20 knots
after midnight, then veering northeast late. a chance of showers
and thunderstorms. waves building to 3 to 5 feet occasionally to
7 feet. 
.tuesday...east winds 5 to 15 knots veering southeast in the
afternoon. a chance of showers through early afternoon. a slight
chance of thunderstorms. showers likely by mid afternoon. waves
subsiding to 1 to 3 feet. 
.tuesday night...west winds 15 to 25 knots becoming northwest
20 to 30 knots after midnight. a chance of showers. waves
building to 3 to 5 feet occasionally to 7 feet. 
.wednesday...northwest winds 20 to 30 knots diminishing to 15 to
25 knots by mid afternoon. waves building to 3 to 6 feet
occasionally to 8 feet. 
.wednesday night...northwest winds 15 to 25 knots becoming west
10 to 20 knots after midnight. waves subsiding to 1 to 3 feet. 
.thursday...southwest winds 10 to 20 knots becoming northwest
gales to 35 knots. a chance of showers. waves building to 2 to
4 feet, then subsiding to 1 to 3 feet. 
.friday...north gales to 35 knots diminishing to 15 to 25 knots.
a chance of showers. waves building to 8 to 11 feet occasionally
to 14 feet, then subsiding to 1 to 3 feet. 

$$
fzus63 kmqt 250754
glfls 

lsz267-251600-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
354 am edt mon sep 25 2017

.early this morning...south winds 10 to 20 knots. waves 1 to
3 feet. 
.today...south winds 10 to 20 knots becoming west 5 to 15 knots
in the afternoon, then veering north late. waves subsiding to
calm to 2 feet. 
.tonight...north winds 5 to 15 knots veering northeast late. a
slight chance of showers and thunderstorms. waves calm to 2 feet.
.tuesday...southeast winds 5 to 15 knots becoming east 10 to
20 knots late. a chance of showers through early afternoon. a
chance of thunderstorms. showers likely by mid afternoon. waves
calm to 2 feet. 
.tuesday night...west winds 10 to 20 knots increasing to 20 to
30 knots after midnight. showers likely and a slight chance of
thunderstorms through midnight, then a chance of showers after
midnight. waves building to 3 to 5 feet occasionally to 7 feet. 
.wednesday...northwest winds 20 to 30 knots. waves building to
3 to 6 feet occasionally to 8 feet. 
.wednesday night...northwest winds 15 to 25 knots diminishing to
10 to 20 knots after midnight. waves subsiding to 1 to 3 feet. 
.thursday...southwest winds 10 to 20 knots becoming northwest
20 to 30 knots. a chance of showers. waves subsiding to calm to
2 feet, then building to 4 to 7 feet occasionally to 9 feet. 
.friday...north winds 20 to 30 knots diminishing to 15 to
25 knots. a chance of showers. waves building to 6 to 9 feet
occasionally to 11 feet, then subsiding to 1 to 3 feet. 

$$

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