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fzus61 kbuf 201435
glflo 

loz063>065-202100-
lake ontario open waters from hamlin beach to the saint lawrence
river-
1035 am edt fri apr 20 2018

.this afternoon...northwest winds 15 to 20 knots becoming west. a
chance of flurries. waves 3 to 5 feet subsiding to 2 to 4 feet. 
.tonight...northwest winds 5 to 15 knots. waves 2 to 4 feet
subsiding to 1 to 3 feet. 
.saturday...northwest winds 5 to 15 knots becoming west. waves
2 feet or less. 
.saturday night...west winds 5 to 15 knots. waves 2 feet or less.
.sunday...west winds 10 knots or less becoming southwest. waves
1 foot or less. 
.monday...south winds 5 to 15 knots increasing to 15 to 20 knots.
waves 1 to 3 feet. 
.tuesday...south winds 5 to 15 knots becoming southeast. a chance
of showers tuesday night. waves 1 to 3 feet. 

$$
fzus61 kbuf 201435
glflo 
609 

open lake forecast for lake ontario
national weather service buffalo ny
1035 am edt fri apr 20 2018

for waters beyond five nautical miles of shore on lake ontario

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 29.4 inch low will drift across the canadian maritimes today. 
a 30.5 inch high will then build across the great lakes over the 
weekend, before sliding off the new england coastline early next 
week.

loz062-202100-
lake ontario open waters from the niagara river to hamlin beach-
1035 am edt fri apr 20 2018

.this afternoon...northwest winds 15 to 20 knots diminishing to
10 to 15 knots. waves 3 to 5 feet subsiding to 2 to 4 feet. 
.tonight...northwest winds 5 to 15 knots. waves 1 to 3 feet. 
.saturday...northwest winds 5 to 15 knots becoming west. waves
2 feet or less. 
.saturday night...west winds 5 to 15 knots becoming southwest.
waves 2 feet or less. 
.sunday...west winds less than 10 knots becoming south. waves
1 foot or less. 
.monday...southeast winds 5 to 10 knots becoming south. waves
2 feet or less. 
.tuesday...south winds 5 to 10 knots becoming southeast. a chance
of showers tuesday night. waves 2 feet or less. 

$$
fzus61 kcle 201311
glfle 
159 

open lake forecast for lake erie
national weather service cleveland oh
911 am edt fri apr 20 2018

for waters beyond five nautical miles of shore on lake erie

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 averaging 30.50 inches over the northern plains will
slowly build across the western lakes today and through the 
eastern lakes over the weekend. high pressure will move off the 
new england coast monday with a ridge lingering across the great 
lakes through tuesday.

lez162>165-202015-
lake erie open waters from maumee bay to reno beach oh-
lake erie open waters from reno beach to the islands oh-
lake erie open waters from the islands to vermilion oh-
lake erie open waters from vermilion to avon point oh-
911 am edt fri apr 20 2018

.this afternoon...northwest winds 5 to 10 knots becoming
southwest. waves 2 feet or less. 
.tonight...south winds less than 10 knots becoming northeast.
waves 1 foot or less. 
.saturday...light and variable winds. waves 1 foot or less. 
.saturday night...southeast winds less than 10 knots. waves
1 foot or less. 
.sunday...east winds 5 to 10 knots. waves 2 feet or less. 
.monday...east winds 5 to 10 knots becoming southeast. waves
2 feet or less. 
.tuesday...southeast winds 5 to 10 knots. a chance of showers.
waves 2 feet or less. 

$$
fzus61 kcle 201311
glfle 

lez061-166>169-202015-
lake erie open waters from ripley to buffalo ny-
lake erie open waters from avon point to willowick oh-
lake erie open waters from willowick to geneva-on-the-lake oh-
lake erie open waters from geneva-on-the-lake to conneaut oh-
lake erie open waters from conneaut oh to ripley ny-
911 am edt fri apr 20 2018

.this afternoon...northwest winds 5 to 15 knots becoming west.
waves 1 to 2 feet. 
.tonight...west winds 10 knots or less becoming north. waves 1 to
3 feet subsiding to 1 foot or less. 
.saturday...northwest winds 10 knots or less becoming west. waves
1 foot or less. 
.saturday night...west winds 10 knots or less becoming east.
waves 1 foot or less. 
.sunday...northeast winds 5 to 10 knots becoming east. waves
2 feet or less. 
.monday...southeast winds 5 to 10 knots becoming south. waves
2 feet or less. 
.tuesday...southeast winds around 10 knots. a chance of rain
showers tuesday night. waves 2 feet or less. 

$$
fzus63 kdtx 201331
glflh 

lhz362-363-202015-
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-
931 am edt fri apr 20 2018

.rest of today...northwest winds 10 to 15 knots decreasing to
5 to 10 knots in the afternoon. waves 2 to 4 feet subsiding to
1 to 3 feet in the afternoon. 
.tonight...light and variable winds becoming southwest 5 to
10 knots after midnight. waves 2 feet or less. 
.saturday...west winds 5 to 10 knots early in the morning
becoming light and variable. waves 2 feet or less. 
.saturday night...light and variable winds. waves 2 feet or less.
.sunday...light and variable winds becoming east 5 to 10 knots
late in the evening. waves 2 feet or less. 
.monday...light and variable winds becoming southeast 5 to
10 knots. waves 2 feet or less. 
.tuesday...south winds 5 to 10 knots increasing to 10 to 15 knots
until early morning. a chance of showers until early morning. a
chance of snow showers after midnight. waves 1 to 3 feet. 


$$
fzus63 kdtx 201331
glflh 

lhz462>464-202015-
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-
931 am edt fri apr 20 2018

.rest of today...northwest winds 10 to 15 knots becoming north
5 to 10 knots in the afternoon. waves 2 to 4 feet subsiding to
1 to 3 feet late in the afternoon. 
.tonight...light and variable winds. waves 2 feet or less. 
.saturday...light and variable winds. waves 2 feet or less. 
.saturday night...light and variable winds. waves 2 feet or less.
.sunday...light and variable winds becoming northeast 5 to
10 knots late in the afternoon. waves 2 feet or less. 
.monday...southeast winds 5 to 10 knots. waves 2 feet or less. 
.tuesday...south winds 5 to 10 knots. a chance of showers until
early morning. waves 2 feet or less. 


$$
fzus63 kdtx 201331
glflh 
170 

open lake forecast for lake huron
national weather service detroit/pontiac mi
931 am edt fri apr 20 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...high pressure, 30.50 inches, will expand into the great 
lakes today. this high pressure will persist through the weekend, 
slowly moving to the east coast by early next week.

lhz361-202015-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
931 am edt fri apr 20 2018

.rest of today...west winds 5 to 10 knots. waves 2 feet or less. 
.tonight...west winds 5 to 10 knots. waves 2 feet or less. 
.saturday...light and variable winds. waves 2 feet or less. 
.saturday night...light and variable winds. waves 2 feet or less.
.sunday...light and variable winds becoming east 5 to 10 knots
late in the afternoon...then veering to the southeast late in the
evening. waves 2 feet or less. 
.monday...south winds 5 to 10 knots early in the morning becoming
light and variable...then becoming southeast 5 to 10 knots until
early morning. waves 2 feet or less. 
.tuesday...light and variable winds becoming southeast 5 to
10 knots until early morning. a chance of showers after midnight.
waves 2 feet or less. 


$$
fzus63 kdtx 201331
glfsc 
921 

lake st clair forecast
national weather service detroit/pontiac mi
931 am edt fri apr 20 2018

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, 30.50 inches, will expand into the great 
lakes today. this high pressure will persist through the weekend, 
slowly moving to the east coast by early next week.

lcz460-202015-
lake st clair-
931 am edt fri apr 20 2018

.rest of today...northwest winds 5 to 10 knots. sunny. waves 2 feet
or less.
.tonight...northeast winds 5 to 10 knots this evening becoming light
and variable. mostly clear. waves 2 feet or less.
.saturday...light and variable winds. partly sunny. waves nearly
calm.
.saturday night...light and variable winds. mostly clear. waves
nearly calm.
.sunday...light and variable winds becoming east 5 to 10 knots in
the afternoon and evening. mostly sunny early in the morning
becoming clear. waves 2 feet or less.
.monday...southeast winds 5 to 10 knots. mostly clear. waves 2 feet
or less.
.tuesday...southeast winds 5 to 10 knots. mostly cloudy. a chance of
light showers. waves 2 feet or less.

$$
fzus63 klot 201351
glflm 
259 

open lake forecast for lake michigan
national weather service chicago/romeoville il
851 am cdt fri apr 20 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...high pressure of 30.6 inches will spread over the 
lake this afternoon and drift east from there by the end of the 
weekend, gradually weakening as it does. the high will move east 
on monday. low pressure is expected to develop south of the lake 
and move east sometime tuesday night into wednesday.

lmz261-362-364-366-563-565-567-868-202130-
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-
851 am cdt fri apr 20 2018

sheboygan wi to pentwater mi north...

.rest of today...west winds 5 to 10 kt becoming southwest. waves
1 to 2 ft. 
.tonight...southwest winds 10 to 15 kt. waves 1 to 2 ft. 
.saturday...southwest winds 5 to 10 kt. waves 1 to 2 ft. 
.saturday night...south winds less than 10 kt. waves around 1 ft.
.sunday...southeast winds less than 10 kt becoming east. waves
1 ft or less. 
.sunday night...east winds 5 to 10 kt becoming southeast. waves
1 ft or less. 
.monday...south winds 5 to 10 kt becoming southwest. waves 1 ft
or less. 
.tuesday...southwest winds 5 to 10 kt increasing to 10 to 15 kt.
waves 1 to 3 ft. 

$$
fzus63 klot 201351
glflm 

lmz080-669-671-673-675-777-779-870-872-874-876-878-202130-
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-
851 am cdt fri apr 20 2018

sheboygan wi to pentwater mi south...

.rest of today...west winds 5 to 10 kt becoming variable in the 
early afternoon. waves 1 to 3 ft.
.tonight...east winds 5 to 10 kt. waves around 1 ft. 
.saturday...east winds less than 10 kt becoming northeast. waves 
around 1 ft. 
.saturday night...east winds 5 to 10 kt. waves 1 ft or less.
.sunday...east winds 5 to 10 kt becoming northeast 10 to 15 kt. 
waves 1 to 3 ft. 
.sunday night...northeast winds 10 to 15 kt becoming east. waves
1 to 3 ft. 
.monday...east winds 10 to 15 kt becoming northeast. waves 1 to
3 ft. 
.tuesday...south winds 5 to 10 kt becoming southeast. waves 1 to 2
ft.

$$
fzus63 kmqt 201356
glfls 

lsz264-202200-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
956 am edt fri apr 20 2018

.rest of today...west winds 5 to 15 knots backing southwest late.
waves calm to 2 feet. 
.tonight...southwest winds 5 to 15 knots backing south after
midnight, then veering southwest late. waves calm to 2 feet. 
.saturday...southwest winds 5 to 15 knots backing south late.
waves calm to 2 feet. 
.saturday night...south winds 5 to 15 knots. waves calm to
2 feet. 
.sunday...south winds 5 to 15 knots. waves calm to 2 feet. 
.sunday night...south winds 5 to 15 knots becoming southwest
10 to 20 knots after midnight. waves building to 1 to 3 feet. 
.monday...southwest winds 10 to 20 knots. waves building to 2 to
4 feet, then subsiding to calm to 2 feet. 
.tuesday...north winds 5 to 15 knots increasing to 10 to
20 knots. a chance of rain showers, possibly mixed with snow.
waves building to 2 to 4 feet. 

$$
fzus63 kmqt 201356
glfls 

lsz265-202200-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
956 am edt fri apr 20 2018

.rest of today...west winds 5 to 15 knots veering northeast late.
waves calm to 2 feet. 
.tonight...south winds 5 to 15 knots veering southwest late.
waves calm to 2 feet. 
.saturday...southwest winds less than 10 knots becoming southeast
5 to 15 knots in the afternoon, then backing east late. waves
calm to 2 feet. 
.saturday night...southeast winds 5 to 15 knots veering south
after midnight. waves calm to 2 feet. 
.sunday...south winds 5 to 15 knots backing southeast by mid
afternoon. waves calm to 2 feet. 
.sunday night...south winds 5 to 15 knots becoming southwest
10 to 20 knots after midnight. waves calm to 2 feet. 
.monday...southwest winds 5 to 15 knots. waves calm to 2 feet. 
.tuesday...north winds 10 to 20 knots. a chance of rain showers,
possibly mixed with snow. waves building to 3 to 5 feet
occasionally to 7 feet. 

$$
fzus63 kmqt 201356
glfls 
314 

open lake forecast for lake superior
national weather service marquette mi
956 am edt fri apr 20 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 ridge of 30.2 inches over lake superior will build 
to 30.4 inches through monday morning before shifting slowly into 
the lower great lakes. this will be followed by a weak 30.1 inch 
trough monday night into tuesday.

lsz162-202200-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
956 am edt fri apr 20 2018 /856 am cdt fri apr 20 2018/

.rest of today...southwest winds less than 10 knots increasing to
5 to 15 knots in the afternoon. waves calm to 2 feet. 
.tonight...southwest winds less than 10 knots. waves calm to
2 feet. 
.saturday...southwest winds less than 10 knots. waves calm to
2 feet. 
.saturday night...southeast winds less than 10 knots veering
south after midnight. waves calm to 2 feet. 
.sunday...south winds less than 10 knots. waves calm to 2 feet. 
.sunday night...south winds 5 to 15 knots veering southwest after
midnight. waves calm to 2 feet. 
.monday...southwest winds 5 to 15 knots. waves calm to 2 feet. 
.tuesday...north winds 5 to 15 knots. a chance of rain showers,
possibly mixed with snow. waves building to 1 to 3 feet. 

$$
fzus63 kmqt 201356
glfls 

lsz267-202200-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
956 am edt fri apr 20 2018

.rest of today...south winds 5 to 15 knots veering southwest
late. waves calm to 2 feet. 
.tonight...southwest winds 5 to 15 knots backing south after
midnight. waves calm to 2 feet. 
.saturday...south winds less than 10 knots backing southeast in
the afternoon, then becoming east 5 to 15 knots late. waves calm
to 2 feet. 
.saturday night...southeast winds 5 to 15 knots veering south
after midnight. waves calm to 2 feet. 
.sunday...south winds 5 to 15 knots backing southeast by mid
afternoon. waves calm to 2 feet. 
.sunday night...south winds 10 to 20 knots. waves calm to 2 feet.
.monday...south winds 10 to 20 knots. waves building to 1 to
3 feet, then subsiding to calm to 2 feet. 
.tuesday...northwest winds 10 to 20 knots veering north. a chance
of rain showers, possibly mixed with snow. waves building to 1 to
3 feet. 

$$
fzus63 kmqt 201356
glfls 

lsz266-202200-
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-
956 am edt fri apr 20 2018

.rest of today...southwest winds 5 to 15 knots veering west in
the afternoon, then backing southwest late. waves calm to 2 feet.
.tonight...south winds 5 to 15 knots. waves calm to 2 feet. 
.saturday...south winds 5 to 15 knots backing east late. waves
calm to 2 feet. 
.saturday night...southeast winds 5 to 15 knots veering south
after midnight. waves calm to 2 feet. 
.sunday...south winds 5 to 15 knots backing southeast by mid
afternoon. waves calm to 2 feet. 
.sunday night...south winds 10 to 20 knots. waves building to
1 to 3 feet. 
.monday...south winds 10 to 20 knots veering southwest. waves
subsiding to calm to 2 feet. 
.tuesday...north winds 10 to 20 knots. a chance of rain showers.
a chance of snow showers. waves building to 3 to 5 feet
occasionally to 7 feet. 

$$
fzus63 kmqt 201356
glfls 

lsz263-202200-
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-
956 am edt fri apr 20 2018

.rest of today...west winds 5 to 15 knots backing southwest late.
waves calm to 2 feet. 
.tonight...southwest winds less than 10 knots backing south after
midnight, then veering southwest late. waves calm to 2 feet. 
.saturday...southwest winds less than 10 knots. waves calm to
2 feet. 
.saturday night...south winds less than 10 knots. waves calm to
2 feet. 
.sunday...southwest winds less than 10 knots becoming south 5 to
15 knots by mid afternoon. waves calm to 2 feet. 
.sunday night...south winds 5 to 15 knots veering southwest after
midnight. waves calm to 2 feet. 
.monday...southwest winds 10 to 20 knots diminishing to 5 to
15 knots. waves building to 1 to 3 feet, then subsiding to calm
to 2 feet. 
.tuesday...north winds 5 to 15 knots. a chance of rain showers. a
chance of snow showers. waves building to 1 to 3 feet. 

$$

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