fzus63 kdtx 250747
glflh 
471 

open lake forecast for lake huron
national weather service detroit/pontiac mi
347 am edt wed apr 25 2018

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...moderate north wind continues across all marine areas
today as a cold front exits eastward and high pressure approaches
from the midwest. this high will settle over the central great
lakes tonight at 30.00 inches and hold through thursday. the next
cold front is scheduled to arrive thursday night and friday with
low pressure averaging 29.80 inches. larger low pressure trailing
the front is expected to maintain cool and unsettled conditions
this weekend.

lhz361-252015-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
347 am edt wed apr 25 2018

.today...north winds 15 to 20 knots becoming northwest 10 to
15 knots in the late morning and afternoon. a chance of showers
early in the morning. waves 3 to 5 feet subsiding to 1 to 3 feet
in the afternoon. 
.tonight...northwest winds 10 to 15 knots decreasing to 5 to
10 knots early in the morning. waves 2 to 4 feet subsiding to
1 to 3 feet early in the morning. 
.thursday...west winds 5 to 10 knots early in the morning
becoming light and variable. waves 2 feet or less. 
.thursday night...southeast winds 5 to 10 knots veering to the
south in the late evening and early morning...then veering to the
west after midnight. a chance of showers after midnight. waves
2 feet or less. 
.friday...northwest winds 10 to 15 knots decreasing to 5 to
10 knots late in the morning...then becoming west 10 to 15 knots
late in the afternoon. a chance of showers early in the morning.
waves 1 to 3 feet. 
.saturday...northwest winds 10 to 15 knots decreasing to 5 to
10 knots in the late morning and early afternoon...then
increasing to 10 to 15 knots until early morning. waves 1 to
3 feet building to 2 to 4 feet until early morning. 
.sunday...west winds 5 to 10 knots backing to the south in the
late evening and early morning. waves 2 feet or less. 


$$

fzus63 kdtx 250747
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-
347 am edt wed apr 25 2018

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


$$

fzus63 kdtx 250747
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-
347 am edt wed apr 25 2018

.today...northwest winds 10 to 15 knots becoming north 15 to
20 knots in the late morning and afternoon. patchy fog early in
the morning. showers likely in the morning. a chance of showers
in the afternoon. waves 4 to 6 feet. 
.tonight...northwest winds 10 to 15 knots. a chance of showers
early in the evening. waves 4 to 6 feet. waves occasionally
around 8 feet. 
.thursday...northwest winds 5 to 10 knots early in the morning
becoming light and variable. waves 2 to 4 feet subsiding to 1 to
3 feet in the late morning and afternoon. 
.thursday night...southeast winds 5 to 10 knots veering to the
south after midnight. waves 2 feet or less. 
.friday...southwest winds 5 to 10 knots veering to the north late
in the morning...then becoming light and variable late in the
evening. a chance of showers early in the morning. waves 1 to
3 feet. 
.saturday...northwest winds 5 to 10 knots increasing to 10 to
15 knots in the late morning and early afternoon...then becoming
north 5 to 10 knots until early morning. waves 1 to 3 feet
building to 2 to 4 feet. 
.sunday...northwest winds 10 to 15 knots becoming west 5 to
10 knots in the late morning and early afternoon...then becoming
light and variable early in the evening becoming south 5 to
10 knots in the late evening and early morning. waves 2 to 4 feet
subsiding to 1 to 3 feet until early morning. 


$$

fzus63 klot 250747
glflm 
171 

open lake forecast for lake michigan
national weather service chicago/romeoville il
247 am cdt wed apr 25 2018

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 the mid-atlantic 
will lift to southern quebec tonight and deepen to 29.5 inches as 
it does. meanwhile, high pressure of 30.1 inches will build across
the western great lakes tonight. following this, low pressure of 
29.7 inches will cross eastward over southern ontario during 
thursday, steering a cold front across the lake that night. a 
second low pressure of 29.8 inches will move across the southern 
part of the lake friday night steering another cold front through.
high pressure of 30.2 inches will then build over the great lakes
for the weekend.


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-
247 am cdt wed apr 25 2018

sheboygan wi to pentwater mi north...

.today...north winds to 30 kt diminishing to 15 to 25 kt by early
afternoon, and to 10 to 20 kt by mid afternoon. waves 6 to 9 ft 
occasionally to 11 ft subsiding to 4 to 6 ft occasionally to 8 
ft by early afternoon, and 3 to 5 ft by late day.
.tonight...north winds 10 to 15 kt becoming variable less than 10
kt, then becoming southwest 10 to 15 kt after midnight. waves 2 
to 4 ft subsiding to 1 to 3 ft. 
.thursday...southwest winds 10 to 20 kt increasing to 15 to
25 kt in the afternoon. waves building to 3 to 5 ft. 
.thursday night...northwest winds 15 to 25 kt becoming north.
chance of rain and snow showers in the evening, then chance of
rain showers overnight. waves 4 to 6 ft occasionally to 8 ft. 
.friday...northwest winds 10 to 20 kt backing to southwest 10 to
15 kt. chance of rain showers in the afternoon. waves subsiding 
to 2 to 4 ft. 
.friday night...north winds 10 to 15 kt increasing to 10 to
20 kt. waves 2 to 4 ft. 
.saturday...north winds 10 to 20 kt. waves 2 to 4 ft. 
.sunday...southwest winds 10 to 15 kt increasing to 10 to 20 kt.
waves 1 to 3 ft building to 2 to 4 ft.  

$$

fzus63 klot 250747
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-
247 am cdt wed apr 25 2018

sheboygan wi to pentwater mi south...

.today...north winds to 30 kt diminishing to 15 to 25 kt late in
the day. waves 7 to 10 ft occasionally to 13 ft subsiding to 6 to
9 ft occasionally to 11 ft. 
.tonight...north winds 10 to 20 kt becoming variable less than 10
kt after midnight. waves 4 to 7 ft occasionally to 9 ft subsiding
to 2 to 4 ft. 
.thursday...west winds 10 to 15 kt backing to south 10 to 20 kt in
the afternoon. waves 2 to 4 ft. 
.thursday night...south winds 15 to 25 kt veering to north to
30 kt. waves building to 4 to 7 ft occasionally to 9 ft. 
.friday...north winds 15 to 25 kt backing to southwest 10 to
20 kt. waves 4 to 6 ft occasionally to 8 ft. 
.friday night...west winds 10 to 20 kt becoming northwest. waves 2
to 4 ft. 
.saturday...north winds 10 to 20 kt. waves 2 to 4 ft. 
.sunday...southeast winds 10 to 15 kt becoming south 10 to 20 kt.
waves 1 to 3 ft. 

$$

fzus63 kmqt 250758
glfls 
814 

open lake forecast for lake superior
national weather service marquette mi
358 am edt wed apr 25 2018

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 weak low pressure trough of 30.0 inches over the 
lower great lakes will reach the east coast by thursday morning
while a 30.3 inch high pressure ridge over the northern plains 
crosses the upper great lakes. on thursday, a low pressure trough
of 29.8 inches will cross lake superior. it will be quickly 
followed by a secondary low of 30.1 inches on friday. in its wake,
high pressure of 30.3 inches will settle over the western great 
lakes saturday and sunday. 

lsz162-251600-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
358 am edt wed apr 25 2018 /258 am cdt wed apr 25 2018/

.early this morning...north winds less than 10 knots. waves calm
to 2 feet. 
.today...north winds less than 10 knots becoming southwest 5 to
15 knots in the afternoon, then backing south late. waves
building to 1 to 3 feet. 
.tonight...south winds 5 to 15 knots veering southwest after
midnight. waves subsiding to calm to 2 feet, then building to
1 to 3 feet. 
.thursday...west winds 5 to 15 knots veering north in the
afternoon. a slight chance of rain showers. waves subsiding to
calm to 2 feet. 
.thursday night...northwest winds 5 to 15 knots backing southwest
after midnight. a slight chance of snow showers after midnight.
waves calm to 2 feet. 
.friday...southwest winds 5 to 15 knots becoming northwest 10 to
20 knots by mid afternoon. waves calm to 2 feet. 
.friday night...north winds 5 to 15 knots. waves calm to 2 feet. 
.saturday...southeast winds 5 to 15 knots veering south. waves
calm to 2 feet. 
.sunday...south winds 5 to 15 knots increasing to 10 to 20 knots.
waves building to 2 to 4 feet. 

$$

fzus63 kmqt 250758
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-
358 am edt wed apr 25 2018

.early this morning...north winds 5 to 15 knots. waves 1 to
3 feet. 
.today...north winds 5 to 15 knots backing southwest in the
afternoon, then increasing to 10 to 20 knots late. waves
subsiding to calm to 2 feet, then building to 1 to 3 feet. 
.tonight...southwest winds 5 to 15 knots. waves building to 2 to
4 feet. 
.thursday...west winds 10 to 20 knots becoming north 15 to
25 knots in the afternoon. a chance of rain showers. a chance of
snow showers by mid afternoon. waves subsiding to 1 to 3 feet,
then building to 2 to 4 feet. 
.thursday night...north winds 10 to 20 knots becoming southwest
5 to 15 knots after midnight. a slight chance of snow showers
after midnight. waves subsiding to calm to 2 feet. 
.friday...south winds 5 to 15 knots backing southeast by mid
afternoon. a chance of snow showers, possibly mixed with rain.
waves calm to 2 feet. 
.friday night...north winds 5 to 15 knots. waves calm to 2 feet. 
.saturday...north winds 5 to 15 knots veering south. waves calm
to 2 feet. 
.sunday...south winds 5 to 15 knots increasing to 10 to 20 knots.
waves building to 2 to 4 feet. 

$$

fzus63 kmqt 250758
glfls 

lsz264-251600-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
358 am edt wed apr 25 2018

.early this morning...north winds 10 to 20 knots. waves 2 to
4 feet. 
.today...north winds 5 to 15 knots backing west in the afternoon,
then increasing to 10 to 20 knots late. waves subsiding to calm
to 2 feet, then building to 1 to 3 feet. 
.tonight...southwest winds 10 to 20 knots increasing to 15 to
25 knots late. waves 1 to 3 feet. 
.thursday...southwest winds 15 to 25 knots veering north in the
afternoon, then increasing to 20 to 30 knots late. a chance of
rain showers, possibly mixed with snow by mid afternoon. waves
building to 3 to 6 feet occasionally to 8 feet. 
.thursday night...north winds 10 to 20 knots diminishing to 5 to
15 knots after midnight. waves subsiding to calm to 2 feet. 
.friday...south winds 5 to 15 knots becoming southeast 10 to
20 knots by mid afternoon. a chance of snow showers, possibly
mixed with rain. waves calm to 2 feet. 
.friday night...north winds 5 to 15 knots increasing to 10 to
20 knots after midnight. waves calm to 2 feet. 
.saturday...north winds 5 to 15 knots backing southwest. waves
calm to 2 feet. 
.sunday...south winds 10 to 20 knots becoming southwest 15 to
25 knots. waves building to 3 to 5 feet occasionally to 7 feet,
then subsiding to 2 to 4 feet. 

$$

fzus63 kmqt 250758
glfls 

lsz265-251600-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
358 am edt wed apr 25 2018

.early this morning...north winds 10 to 20 knots. waves 3 to
5 feet occasionally to 7 feet. 
.today...north winds 10 to 20 knots. waves subsiding to calm to
2 feet. 
.tonight...south winds 5 to 15 knots becoming southwest 10 to
20 knots after midnight. waves calm to 2 feet. 
.thursday...southwest winds 10 to 20 knots veering northwest in
the afternoon, then increasing to 20 to 30 knots late. a chance
of rain showers, possibly mixed with snow by mid afternoon. waves
building to 3 to 5 feet occasionally to 7 feet. 
.thursday night...north winds 10 to 20 knots diminishing to 5 to
15 knots after midnight. a slight chance of rain and snow showers
through midnight. waves subsiding to 1 to 3 feet. 
.friday...southwest winds 5 to 15 knots backing east by mid
afternoon. a chance of rain and snow showers. waves subsiding to
calm to 2 feet. 
.friday night...north winds 5 to 15 knots becoming northwest
10 to 20 knots after midnight. waves calm to 2 feet. 
.saturday...north winds 10 to 20 knots becoming southwest 5 to
15 knots. waves calm to 2 feet. 
.sunday...south winds 10 to 20 knots becoming southwest 15 to
25 knots. waves building to 1 to 3 feet. 

$$

fzus63 kmqt 250758
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-
358 am edt wed apr 25 2018

.early this morning...north winds 15 to 25 knots. waves 3 to
6 feet occasionally to 8 feet, then subsiding to 3 to 5 feet
occasionally to 7 feet. 
.today...north winds 10 to 20 knots becoming northwest 5 to
15 knots late. waves subsiding to 1 to 3 feet. 
.tonight...southwest winds 5 to 15 knots backing south after
midnight, then increasing to 10 to 20 knots late. waves 1 to
3 feet. 
.thursday...south winds 10 to 20 knots veering southwest in the
afternoon, then becoming northwest 15 to 25 knots late. a slight
chance of rain showers, possibly mixed with snow by mid
afternoon. waves building to 3 to 6 feet occasionally to 8 feet. 
.thursday night...north winds 15 to 25 knots diminishing to 10 to
20 knots after midnight. a slight chance of rain and snow showers
through midnight. waves building to 4 to 7 feet occasionally to
9 feet, then subsiding to 2 to 4 feet. 
.friday...north winds 5 to 15 knots. waves subsiding to calm to
2 feet. 
.friday night...north winds 5 to 15 knots increasing to 10 to
20 knots after midnight. waves calm to 2 feet. 
.saturday...north winds 10 to 20 knots becoming west 5 to
15 knots. waves building to 1 to 3 feet, then subsiding to calm
to 2 feet. 
.sunday...south winds 10 to 20 knots increasing to 15 to
25 knots. waves building to 3 to 6 feet occasionally to 8 feet. 

$$

fzus63 kmqt 250758
glfls 

lsz267-251600-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
358 am edt wed apr 25 2018

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

$$