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fzus63 klot 221331
glflm 
001 

open lake forecast for lake michigan
national weather service chicago/romeoville il
831 am cdt fri sep 22 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...high pressure of 30.1 inches across the central and 
eastern great lakes will remain in place through monday. meanwhile,
low pressure of 29.5 inches will move northeast across the upper 
midwest into saturday. a persistent low pressure trough averaging 
29.8 inches will remain from minnesota through the central plains 
during the remainder of the weekend. during the middle of next 
week, this trough and an associated cold front is expected to pass
across the lake.

lmz261-362-364-366-563-565-567-868-222130-
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-
831 am cdt fri sep 22 2017

sheboygan wi to pentwater mi north...

.rest of today...south winds 10 to 20 kt becoming southwest.
areas of fog this morning...then patchy fog this afternoon. waves
2 to 4 ft building to 3 to 5 ft this afternoon. 
.tonight...southwest winds 10 to 20 kt. waves 3 to 5 ft. 
.saturday...south winds 10 to 20 kt. waves 2 to 4 ft. 
.saturday night...southwest winds 10 to 20 kt. waves 2 to 4 ft. 
.sunday...south winds 10 to 20 kt. waves 2 to 4 ft. 
.sunday night...south winds 10 to 20 kt diminishing to 10 to
15 kt. waves subsiding to 1 to 3 ft. 
.monday...south winds 10 to 15 kt. waves 1 to 3 ft. 
.tuesday...south winds 10 to 15 kt. waves 1 to 3 ft. 

$$
fzus63 klot 221331
glflm 

lmz080-669-671-673-675-777-779-870-872-874-876-878-222130-
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-
831 am cdt fri sep 22 2017

sheboygan wi to pentwater mi south...

.rest of today...south winds 10 to 15 kt increasing to 10 to
20 kt. waves 1 to 3 ft. 
.tonight...south winds 10 to 20 kt diminishing to 10 to 15 kt in
the late evening. waves 1 to 3 ft.
.saturday...south winds 10 to 15 kt becoming southeast in the
afternoon. waves 1 to 3 ft. 
.saturday night...southeast winds 10 to 15 kt becoming south.
waves 1 to 3 ft. 
.sunday...south winds 10 to 15 kt. waves 1 to 3 ft. 
.sunday night...southeast winds 10 to 15 kt becoming south. waves
1 to 3 ft. 
.monday...south winds 10 to 15 kt becoming southeast. waves 1 to
3 ft. 
.tuesday...south winds 10 to 15 kt. waves 1 to 3 ft.  

$$

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