fzus61 kbuf 252339
glflo 
859 

glflo 

open lake forecast for lake ontario
national weather service buffalo ny
730 pm edt mon sep 25 2017

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 30.1 inch high will remain in place across the 
lower great lakes through wednesday morning. a cold front will
then cross the lower great lakes late wednesday. a ridge of high 
pressure averaging 30.1 inches is then forecast to build into the 
central great lakes thursday and the ohio valley friday. a second 
cold front is then forecast to cross the lower great lakes late 
friday.

loz062-260300-
lake ontario open waters from the niagara river to hamlin beach-
730 pm edt mon sep 25 2017

.tonight...southeast winds 10 knots or less becoming east. waves
1 foot or less. 
.tuesday...southeast winds less than 10 knots. waves 1 foot or
less. 
.tuesday night...southeast winds 10 knots or less becoming
southwest. waves 1 foot or less. 
.wednesday...southwest winds 5 to 15 knots becoming northwest
15 to 20 knots. a chance of showers in the afternoon. waves 1 to
3 feet. 
.wednesday night...northwest winds 15 to 20 knots. waves 3 to
5 feet subsiding to 2 to 4 feet. 
.thursday...northwest winds 5 to 15 knots. waves 2 to 4 feet
subsiding to 1 to 2 feet. 
.friday...southwest winds 5 to 15 knots becoming north. showers
likely. waves 1 to 3 feet. 
.saturday...north winds 5 to 15 knots becoming northwest. a
chance of showers during the day. waves 1 to 3 feet. 

$$

fzus61 kbuf 252339
glflo 

loz063>065-260300-
lake ontario open waters from hamlin beach to the saint lawrence
river-
730 pm edt mon sep 25 2017

.tonight...east winds less than 10 knots becoming southeast.
waves 1 foot or less. 
.tuesday...southeast winds 10 knots or less becoming northeast.
waves 1 foot or less. 
.tuesday night...light and variable winds becoming south 5 to
10 knots. waves 1 foot or less. 
.wednesday...south winds 5 to 15 knots becoming west 15 to
20 knots. a chance of showers in the afternoon. waves 2 feet or
less. 
.wednesday night...west winds 15 to 20 knots becoming northwest.
waves 3 to 6 feet. 
.thursday...north winds 15 to 20 knots becoming northwest 5 to
15 knots. waves 3 to 5 feet subsiding to 1 to 3 feet. 
.friday...southwest winds 5 to 15 knots becoming north. a chance
of showers. waves 1 to 3 feet. 
.saturday...north winds 5 to 15 knots becoming northwest. a
chance of showers during the day. waves 1 to 3 feet. 

$$

fzus61 kcle 251941
glfle 
650 

open lake forecast for lake erie
national weather service cleveland oh
341 pm edt mon sep 25 2017

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 30.10 inches over the eastern great
lakes will weaken tuesday into wednesday. a cold front will cross
lake erie on wednesday. weak high pressure 30.00 inches will 
build east across the lake on thursday. a stronger cold front will
cross the lake on friday.

lez061-162>169-260215-
lake erie open waters from ripley to buffalo ny-
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-
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-
341 pm edt mon sep 25 2017

.tonight...east winds 5 to 10 knots becoming light and variable.
waves 1 foot or less. 
.tuesday...south winds less than 10 knots becoming west. waves
1 foot or less. 
.tuesday night...southeast winds less than 10 knots becoming
southwest. waves 1 foot or less. 
.wednesday...southwest winds 5 to 10 knots becoming northwest.
waves 1 to 3 feet. 
.wednesday night...northwest winds 10 to 15 knots becoming north
15 to 20 knots. waves 1 to 3 feet. 
.thursday...north winds 5 to 15 knots becoming west. waves 1 to
3 feet. 
.friday...west winds 10 to 15 knots becoming north 15 to
20 knots. a chance of showers. waves 1 to 3 feet. 
.saturday...north winds 15 to 20 knots becoming east 5 to
15 knots. waves 1 to 3 feet subsiding to 1 foot or less. 

$$

fzus63 kdtx 251958
glflh 
265 

open lake forecast for lake huron
national weather service detroit/pontiac mi
357 pm 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 through tuesday. the next low 
pressure system and cold front, 29.80 inches, is then due to cross 
the region tuesday night and into wednesday. cooler high pressure 
then follows the front thursday also followed quickly by another 
cold front on friday.

lhz361-260800-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
357 pm edt mon sep 25 2017

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


$$

fzus63 kdtx 251958 rra
glfsc 
636 

lake st clair forecast
national weather service detroit/pontiac mi
357 pm edt mon sep 25 2017

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 through tuesday. the next low 
pressure system and cold front, 29.80 inches, is then due to cross 
the region tuesday night and into wednesday. cooler high pressure 
then follows the front thursday also followed quickly by another 
cold front on friday.

lcz460-260800-
lake st clair-
357 pm edt mon sep 25 2017

.tonight...southeast winds 5 to 10 knots this evening becoming light
and variable. mostly clear. waves 2 feet or less.
.tuesday...light and variable winds becoming southeast 5 to 10 knots
late in the afternoon. mostly sunny. waves 2 feet or less.
.tuesday night...southwest winds 5 to 10 knots. mostly clear. waves
2 feet or less.
.wednesday...northwest winds 5 to 10 knots increasing to 10 to 15
knots late in the afternoon. partly sunny. waves 2 feet or less.
.wednesday night...north winds 10 to 15 knots. mostly clear. waves 2
feet or less.
.thursday...north winds 10 to 15 knots becoming northwest 5 to 10
knots in the afternoon and evening. mostly sunny until late
afternoon becoming clear. waves 2 feet or less.
.friday...north winds 10 to 15 knots. partly cloudy. a chance of
showers. waves 2 feet or less.
.saturday...northeast winds 10 to 15 knots. mostly clear. waves 2
feet or less.

$$

fzus63 kdtx 251958
glflh 

lhz462>464-260800-
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-
357 pm edt mon sep 25 2017

.tonight...east winds 5 to 10 knots veering to the south after
midnight. waves 2 feet or less. 
.tuesday...southeast winds 5 to 10 knots. waves 2 feet or less. 
.tuesday night...south winds 5 to 10 knots veering to the
southwest after midnight. waves 2 feet or less. 
.wednesday...northwest winds 10 to 15 knots. waves 1 to 3 feet
building to 2 to 4 feet in the late morning and afternoon. 
.wednesday night...northwest winds 15 to 20 knots. waves 4 to
6 feet. 
.thursday...northwest winds 10 to 15 knots decreasing to 5 to
10 knots late in the morning...then backing to the west late in
the afternoon increasing to 10 to 15 knots late in the evening. a
chance of showers after midnight. waves 4 to 6 feet subsiding to
1 to 3 feet late in the afternoon. waves occasionally around
8 feet. 
.friday...west winds 10 to 15 knots becoming northwest 15 to
20 knots with gusts to 30 knots until early evening...then
veering to the north in the late evening and early morning. a
chance of showers. waves 3 to 5 feet building to 6 to 9 feet
until early morning. waves occasionally around 12 feet. 
.saturday...north winds 10 to 15 knots becoming light and
variable. waves 5 to 7 feet subsiding to 2 to 4 feet in the late
evening and early morning. waves occasionally around 10 feet. 


$$

fzus63 kdtx 251958
glflh 

lhz362-363-260800-
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-
357 pm edt mon sep 25 2017

.tonight...southeast winds 5 to 10 knots. waves 2 feet or less. 
.tuesday...light and variable winds becoming southeast 5 to
10 knots in the afternoon. waves 2 feet or less. 
.tuesday night...south winds 5 to 10 knots becoming southwest
10 to 15 knots after midnight. waves 1 to 3 feet. 
.wednesday...northwest winds 15 to 20 knots. gusts to 30 knots in
the late morning and afternoon. waves 3 to 5 feet building to
5 to 7 feet early in the afternoon. waves occasionally around
10 feet. 
.wednesday night...northwest winds 20 to 25 knots with gusts to
30 knots decreasing to 15 to 20 knots with gusts to 30 knots in
the late evening and overnight. waves 5 to 7 feet. waves
occasionally around 10 feet. 
.thursday...northwest winds 10 to 15 knots becoming west 5 to
10 knots late in the morning...then becoming southwest 10 to
15 knots late in the evening. a chance of showers early in the
evening. waves 4 to 6 feet subsiding to 1 to 3 feet late in the
afternoon. waves occasionally around 8 feet. 
.friday...west winds 10 to 15 knots becoming north 15 to 20 knots
with gusts to 30 knots. a chance of showers. waves 4 to 6 feet
building to 6 to 9 feet until early morning. waves occasionally
around 12 feet. 
.saturday...north winds 10 to 15 knots becoming light and
variable. waves 5 to 7 feet subsiding to 2 to 4 feet in the late
evening and early morning. waves occasionally around 10 feet. 


$$

fzus63 klot 251949
glflm 
046 

open lake forecast for lake michigan
national weather service chicago/romeoville il
249 pm 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 29.8 inches over eastern iowa will 
move to lake superior on tuesday...trailing a cold front across 
the lake late tuesday afternoon and evening. the low will then 
deepen to 29.6 inches as it pulls away into western quebec by 
early wednesday. high pressure of 30.2 inches will spread slowly 
east from the plains wednesday...with weaker ridging of 30.1 
inches extending across southern lake michigan by early thursday. 
low pressure of 29.9 inches will pass just northeast of the lakes 
by early friday...with another cold front pushing across the lake.
high pressure of 30.4 inches will build across the western lakes 
saturday.

lmz261-362-364-366-563-565-567-868-260330-
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-
249 pm cdt mon sep 25 2017

sheboygan wi to pentwater mi north...

.tonight...south winds 10 to 15 kt becoming southeast. waves 1 to
2 ft. 
.tuesday...south winds 10 to 20 kt becoming southwest. chance of
showers and thunderstorms in the afternoon. waves 1 to 3 ft.
.tuesday night...southwest winds 10 to 20 kt becoming northwest 
15 to 25 kt. chance of showers in the evening. waves 2 to 4 ft 
building to 3 to 5 ft. 
.wednesday...northwest winds 15 to 25 kt. waves 3 to 5 ft. 
.wednesday night...northwest winds 10 to 20 kt. waves subsiding to 
2 to 4 ft.
.thursday...west winds 10 to 20 kt increasing to 15 to 25 kt.
chance of showers in the afternoon. waves 2 to 4 ft. 
.thursday night...northwest winds 10 to 20 kt increasing to 30 kt
overnight. chance of showers. waves 3 to 5 ft building to 4 to
6 ft occasionally to 8 ft. 
.friday...north winds to 30 kt. chance of showers. waves 6 to
9 ft occasionally to 12 ft building to 7 to 10 ft occasionally to
13 ft. 
.saturday...northeast winds 10 to 15 kt veering to east 5 to
10 kt. waves 4 to 6 ft occasionally to 8 ft subsiding to 2 to
4 ft.  

$$

fzus63 klot 251949
glflm 

lmz080-669-671-673-675-777-779-870-872-874-876-878-260330-
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-
249 pm cdt mon sep 25 2017

sheboygan wi to pentwater mi south...

.tonight...southeast winds 10 to 15 kt becoming south. waves 1 to
2 ft. 
.tuesday...south winds 10 to 15 kt increasing to 10 to 20 kt
becoming southwest late. slight chance of showers and 
thunderstorms in the afternoon. waves 1 to 3 ft. 
.tuesday night...west winds 10 to 20 kt becoming northwest 15 to
25 kt. waves 1 to 2 ft building to 4 to 6 ft occasionally to
8 ft. 
.wednesday...northwest winds 15 to 25 kt becoming north. waves
4 to 6 ft occasionally to 8 ft. 
.wednesday night...north winds 10 to 20 kt. waves 3 to 5 ft.
.thursday...northwest winds 10 to 15 kt becoming west 10 to
20 kt. waves 2 to 4 ft. 
.thursday night...west winds 15 to 25 kt becoming northwest to
30 kt. waves 2 to 4 ft building to 4 to 6 ft occasionally to
8 ft. 
.friday...northwest winds to 30 kt becoming north. waves 7 to
10 ft occasionally to 13 ft. 
.saturday...northeast winds 10 to 20 kt diminishing to 5 to 10 kt
in the afternoon. waves 4 to 7 ft occasionally to 9 ft subsiding
to 3 to 5 ft.  

$$

fzus63 kmqt 251956
glfls 

lsz266-260400-
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-
356 pm edt mon sep 25 2017

.late this afternoon...north winds 10 to 20 knots. patchy fog.
isolated showers and thunderstorms. waves calm to 2 feet building
to 1 to 3 feet. 
.tonight...north winds 10 to 20 knots veering east late. patchy
fog. scattered showers and thunderstorms. waves building to 3 to
5 feet occasionally to 7 feet. 
.tuesday...south winds 10 to 20 knots veering southwest in the
afternoon, then backing south late. patchy fog through early
afternoon. scattered showers and thunderstorms. waves building to
3 to 6 feet occasionally to 8 feet, then subsiding to 2 to
4 feet. 
.tuesday night...northwest winds 10 to 20 knots increasing to
20 to 30 knots after midnight. a chance of showers. waves
subsiding to 1 to 3 feet, then building to 3 to 6 feet
occasionally to 8 feet. 
.wednesday...northwest winds 20 to 30 knots diminishing to 15 to
25 knots by mid afternoon. waves building to 5 to 8 feet
occasionally to 10 feet, then subsiding 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...west winds 10 to 20 knots veering northwest by mid
afternoon. a chance of showers. waves 1 to 3 feet. 
.thursday night...northwest winds 15 to 25 knots veering north
after midnight. a chance of showers. waves building to 3 to
6 feet occasionally to 8 feet. 
.friday...north winds 15 to 25 knots diminishing to 10 to
20 knots. a chance of showers. waves building to 5 to 8 feet
occasionally to 10 feet, then subsiding to calm to 2 feet. 
.saturday...southwest winds 5 to 15 knots increasing to 10 to
20 knots. waves building to 1 to 3 feet. 

$$

fzus63 kmqt 251956
glfls 

lsz265-260400-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
356 pm edt mon sep 25 2017

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

$$

fzus63 kmqt 251956
glfls 

lsz264-260400-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
356 pm edt mon sep 25 2017

.late this afternoon...north winds 5 to 15 knots. isolated
showers. waves building to 1 to 3 feet. 
.tonight...north winds 10 to 20 knots becoming northeast 15 to
25 knots after midnight. showers and isolated thunderstorms 
through 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 late. numerous showers and isolated thunderstorms
through early afternoon, then scattered showers by mid afternoon.
waves subsiding to 3 to 5 feet occasionally to 7 feet. 
.tuesday night...northwest winds 10 to 20 knots increasing to
15 to 25 knots late. a chance of showers. waves subsiding to 2 to
4 feet, then building to 3 to 5 feet occasionally to 7 feet. 
.wednesday...northwest winds 15 to 25 knots becoming west 10 to
20 knots by mid afternoon. waves subsiding to 1 to 3 feet. 
.wednesday night...west winds 5 to 15 knots. waves 1 to 3 feet. 
.thursday...west winds 5 to 15 knots. a chance of showers. waves
subsiding to calm to 2 feet. 
.thursday night...northwest winds 10 to 20 knots becoming north
15 to 25 knots after midnight. a chance of showers. waves
building to 3 to 6 feet occasionally to 8 feet. 
.friday...north winds 15 to 25 knots becoming northeast 5 to
15 knots. waves building to 4 to 7 feet occasionally to 9 feet,
then subsiding to calm to 2 feet. 
.saturday...southwest winds 5 to 15 knots. waves calm to 2 feet. 

$$

fzus63 kmqt 251956
glfls 

lsz263-260400-
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-
356 pm edt mon sep 25 2017

.late this afternoon...northeast winds 5 to 15 knots. scattered
showers. waves calm to 2 feet. 
.tonight...northeast winds 15 to 25 knots. numerous showers.
waves building to 3 to 6 feet occasionally to 8 feet. 
.tuesday...northeast winds 15 to 25 knots becoming north 10 to
20 knots late. patchy fog through early afternoon. numerous
showers and isolated thunderstorms through early afternoon, then
scattered 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
15 to 25 knots. a chance of showers. waves subsiding to 2 to
4 feet, then building to 3 to 5 feet occasionally to 7 feet. 
.wednesday...northwest winds 15 to 25 knots becoming west 10 to
20 knots by mid afternoon. waves subsiding to 1 to 3 feet. 
.wednesday night...west winds 5 to 15 knots. waves 1 to 3 feet. 
.thursday...west winds 5 to 15 knots. a chance of showers. waves
1 to 3 feet. 
.thursday night...northwest winds 10 to 20 knots becoming north
15 to 25 knots after midnight. a chance of showers. waves
building to 3 to 5 feet occasionally to 7 feet. 
.friday...north winds 15 to 25 knots becoming south 5 to
15 knots. waves subsiding to calm to 2 feet. 
.saturday...southwest winds 5 to 15 knots. waves calm to 2 feet. 

$$

fzus63 kmqt 251956
glfls 
283 

open lake forecast for lake superior
national weather service marquette mi
356 pm 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...a 29.9 inch low pressure will develop over the upper 
mississippi valley tonight along a 29.9 inch trough currently 
stretching from far western quebec to western lake superior. the 
low will cross lake superior tuesday morning before reaching 
central quebec at 29.6 inches by wednesday morning. 30.2 inch high
pressure building across the central plains on wednesday will 
extend a 30.1 inch ridge across the upper great lakes wednesday 
night before a 29.9 inch trough tracks southeastward across lake 
superior on thursday. 30.3 inch high pressure will then drift 
southeastward across the upper great lakes friday and saturday.

lsz162-260400-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
356 pm edt mon sep 25 2017 /256 pm cdt mon sep 25 2017/

.late this afternoon...north winds 5 to 15 knots. numerous
showers. waves calm to 2 feet. 
.tonight...northeast winds 10 to 20 knots increasing to 20 to
30 knots after midnight. showers. waves building to 3 to 6 feet
occasionally to 8 feet. 
.tuesday...northeast winds 20 to 30 knots diminishing to 15 to
25 knots in the afternoon, then becoming north 10 to 20 knots
late. patchy fog through early afternoon. numerous showers
through early afternoon, then scattered showers by mid afternoon.
waves subsiding to 3 to 5 feet occasionally to 7 feet. 
.tuesday night...northwest winds 10 to 20 knots increasing to
15 to 25 knots after midnight. a slight chance of showers through
midnight. waves subsiding 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. a chance of showers. waves
calm to 2 feet. 
.thursday night...northwest winds 15 to 25 knots veering north
after midnight. waves building to 2 to 4 feet. 
.friday...north winds 10 to 20 knots becoming south 5 to
15 knots. waves subsiding to calm to 2 feet. 
.saturday...southwest winds 5 to 15 knots becoming south 10 to
20 knots. waves calm to 2 feet. 

$$

fzus63 kmqt 251956
glfls 

lsz267-260400-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
356 pm edt mon sep 25 2017

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

$$