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fzus63 klot 200745
glflm 
464 

open lake forecast for lake michigan
national weather service chicago/romeoville il
245 am cdt sun may 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...a 30.2 inch high will build across the western and 
central great lakes today, then expand across the entire great 
lakes region through tuesday. meanwhile, a 29.9 inch low pressure 
trough across the southern great lakes will drift to the ohio 
river valley by monday. the high pressure will shift to the 
eastern great lakes by thursday, as a 29.7 inch low pressure forms
over the northern and central high plains.

lmz261-362-364-366-563-565-567-868-201515-
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-
245 am cdt sun may 20 2018

sheboygan wi to pentwater mi north...

.today...north winds 15 to 25 kt diminishing to 10 to 20 kt.
waves 4 to 6 ft occasionally to 8 ft subsiding to 3 to 5 ft. 
.tonight...north winds 10 to 15 kt veering to east. waves 2 to
4 ft subsiding to 1 to 2 ft. 
.monday...east winds 5 to 10 kt becoming north. waves 1 to 2 ft. 
.monday night...northeast winds 5 to 10 kt becoming southeast.
waves 1 ft or less. 
.tuesday...northwest winds 5 to 10 kt becoming west. waves 1 ft
or less. 
.tuesday night...southwest winds 5 to 10 kt. waves 1 ft or less. 
.wednesday...southwest winds 5 to 10 kt. waves 1 ft or less.
.thursday...southeast winds 10 to 15 kt becoming southwest. waves
1 to 2 ft.  

$$
fzus63 klot 200745
glflm 

lmz080-669-671-673-675-777-779-870-872-874-876-878-201515-
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-
245 am cdt sun may 20 2018

sheboygan wi to pentwater mi south...

.today...north winds 15 to 25 kt diminishing to 10 to 20 kt.
chance of rain showers and slight chance of thunderstorms this
morning, then slight chance of rain showers and thunderstorms
this afternoon. waves 4 to 6 ft occasionally to 8 ft subsiding to
3 to 5 ft. 
.tonight...north winds 10 to 20 kt becoming east 10 to 15 kt.
slight chance of rain showers in the evening, then chance of rain
showers and slight chance of thunderstorms overnight. waves 3 to
5 ft subsiding to 2 to 4 ft. 
.monday...east winds 10 to 15 kt increasing to 10 to 20 kt.
chance of rain showers in the morning, then chance of rain
showers and thunderstorms in the afternoon. waves 1 to 3 ft. 
.monday night...east winds 10 to 15 kt diminishing to 5 to 10 kt.
chance of rain showers and thunderstorms. waves 1 to 3 ft. 
.tuesday...north winds 5 to 10 kt. waves 1 ft or less. 
.tuesday night...north winds 5 to 10 kt backing to west. waves
1 ft or less. 
.wednesday...south winds 5 to 10 kt becoming southeast. waves
nearly calm. 
.thursday...southeast winds 10 to 15 kt. waves 1 ft or less. 

$$

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