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fzus61 kcle 271941
glfle 
003 

open lake forecast for lake erie
national weather service cleveland oh
341 pm edt thu apr 27 2017

for waters beyond five nautical miles of shore on lake erie

.synopsis...a cold front over the lake will push off to the east
by late evening then weak high pressure 30.00 inches will move
northeast across ohio early friday. another front will set up near
lake erie by friday night then waver back and forth across the
lake into monday. a deep low 29.20 inches will move northeast 
through the lakes late monday and monday night pulling a series of
cold fronts southeast across lake erie through tuesday.

lez162>165-280230-
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-
341 pm edt thu apr 27 2017

.tonight...west winds 10 to 20 knots becoming southwest 5 to
15 knots. waves 1 to 3 feet. 
.friday...south winds 10 knots or less becoming east. waves
2 feet or less. 
.friday night...east winds 10 knots or less becoming south. a
chance of showers. waves 1 foot or less. 
.saturday...west winds 5 to 15 knots becoming north. a chance of
thunderstorms in the morning. showers likely. thunderstorms
likely in the afternoon. waves 1 to 3 feet building to 2 to
4 feet. 
.saturday night...northeast winds 10 to 20 knots. showers and
thunderstorms likely in the evening...then a chance of showers
and thunderstorms overnight. waves 3 to 5 feet building to 4 to
6 feet. 
.sunday...east winds 10 to 20 knots becoming south. a chance of
showers. a chance of thunderstorms. showers likely. waves 4 to
6 feet subsiding to 3 to 5 feet. 
.monday...south winds 20 to 25 knots becoming southwest. showers
and thunderstorms likely. a chance of showers. waves 3 to 5 feet
building to 4 to 6 feet. 
.tuesday...southwest winds to 30 knots becoming west and
diminishing to 10 to 15 knots in the afternoon. a chance of
showers. waves 5 to 8 feet subsiding to 2 feet or less. 

winds and waves higher in and near thunderstorms.

$$
fzus63 kdtx 271942
glfsc 
495 

lake st clair forecast
national weather service detroit/pontiac mi
342 pm edt thu apr 27 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...low pressure...29.30 inches...will track from the u.p. to northern 
ontario tonight. weak high pressure will build into lower michigan 
on friday before surface high pressure...centered over 
ontario...strengthens over the northern great lakes on saturday. 
over the southern great lakes...a frontal boundary will develop and 
bring periods of showers and thunderstorms late saturday through 
sunday as it lifts north.

lcz460-280815-
lake st clair-
342 pm edt thu apr 27 2017

...small craft advisory in effect until 10 pm edt this evening...

.tonight...southwest winds 15 to 20 knots with gusts to 25 knots 
diminishing to 5 to 10 knots. partly cloudy becoming mostly cloudy 
late this evening becoming partly cloudy. waves 2 feet or less.
.friday...southwest winds 5 to 10 knots becoming south 10 to 15
knots late in the afternoon. mostly cloudy. waves 2 feet or less.
.friday night...south winds 5 to 10 knots until early morning
becoming light and variable. mostly cloudy with a chance of light
showers. waves 2 feet or less.
.saturday...north winds 10 to 15 knots. cloudy with a chance of
light showers. waves 2 feet or less.
.saturday night...northeast winds 10 to 15 knots. cloudy. a chance
of light showers in the evening...then showers likely after
midnight. waves 2 feet or less.
.sunday...southeast winds 10 to 15 knots diminishing to 5 to 10
knots in the evening. cloudy. showers likely and a chance of
thunderstorms. waves 2 feet or less.
.monday...southwest winds 15 to 20 knots with gusts to 30 knots.
mostly cloudy with showers likely and a chance of thunderstorms.
waves 1 to 3 feet. a small craft advisory may be needed.
.tuesday...west winds 20 to 25 knots with gusts to 30 knots. mostly
cloudy with a chance of showers. waves 1 to 3 feet.

$$
fzus63 kdtx 271941
glflh 

lhz462>464-280815-
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-
341 pm edt thu apr 27 2017

.tonight...southwest winds 10 to 20 knots. waves 3 to 5 feet 
subsiding to 1 to 3 feet early in the morning. 
.friday...southwest winds 10 to 15 knots becoming south 5 to
10 knots in the afternoon. waves 1 to 3 feet building to 2 to
4 feet in the afternoon. 
.friday night...south winds 10 to 15 knots decreasing to 5 to
10 knots in the late evening and early morning...then becoming
north 10 to 15 knots after midnight. a chance of showers. waves
1 to 3 feet. 
.saturday...north winds 15 to 20 knots decreasing to 10 to
15 knots in the late morning and afternoon. a chance of showers
early in the morning. waves 1 to 3 feet building to 2 to 4 feet
in the late morning and afternoon. 
.saturday night...northeast winds 10 to 15 knots. showers likely
after midnight. waves 1 to 3 feet building to 2 to 4 feet after
midnight. 
.sunday...east winds 15 to 20 knots decreasing to 5 to 10 knots.
showers. a chance of thunderstorms. waves 4 to 6 feet. 
.monday...south winds 10 to 15 knots increasing to 15 to
20 knots. showers early in the morning. a chance of
thunderstorms. a chance of showers until early morning. waves
3 to 5 feet. waves occasionally around 8 feet. 
.tuesday...southwest winds 15 to 20 knots with gusts to 30 knots
increasing to 20 to 25 knots with gusts to 30 knots until early
evening...then becoming west 15 to 20 knots in the late evening
and early morning. a chance of showers until afternoon. waves
4 to 6 feet. waves occasionally around 8 feet. 


$$
fzus63 klot 280008 aaa
glflm 
487 

open lake forecast for lake michigan...updated
national weather service chicago/romeoville il
708 pm cdt thu apr 27 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 29.3 inches over eastern lake superior
will continue to slowly fill as it tracks into ontario this 
evening. weak high pressure of 29.9 inches will develop across the
lake friday as the low continues to move away to the north. low 
pressure of 29.5 inches will develop over the southern plains 
saturday and will deepen to 29.3 inches as it lifts into iowa 
sunday night...and to 29.2 inches as it moves to the northern 
great lakes on monday. a trailing cold front will move across the
lake monday night while the low moves to quebec tuesday.

lmz261-362-364-366-563-565-567-868-280315-
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-
708 pm cdt thu apr 27 2017

sheboygan wi to pentwater mi north...

.tonight...southwest winds to 30 kt diminishing to 15 to 25 kt. 
waves 6 to 9 ft occasionally to 11 ft subsiding to 4 to 7 ft 
occasionally to 9 ft.
.friday...southwest winds 15 to 25 kt becoming south 10 to 20 kt.
waves 3 to 5 ft occasionally to 7 ft subsiding to 2 to 4 ft. 
.friday night...west winds 10 to 15 kt veering to north 10 to
20 kt late in the evening...then increasing to 30 kt after
midnight becoming north to 30 kt late. chance of rain showers in
the evening. waves 1 to 3 ft building to 2 to 4 ft. 
.saturday...north winds 15 to 25 kt increasing to 30 kt. waves
3 to 5 ft occasionally to 7 ft. 
.saturday night...northeast winds to 30 kt. chance of rain
showers. waves 3 to 5 ft occasionally to 7 ft. 
.sunday...east gales to 35 kt becoming northeast. rain showers in
the morning...then rain showers likely in the afternoon. waves
building to 6 to 9 ft occasionally to 11 ft. 
.sunday night...northeast gales to 35 kt becoming east to 30 kt.
rain showers. waves 6 to 9 ft occasionally to 11 ft. 
.monday...southeast winds to 30 kt becoming south. chance of rain
showers. waves 4 to 7 ft occasionally to 9 ft building to 5 to
8 ft occasionally to 10 ft. 
.tuesday...west winds to 30 kt. chance of rain showers. waves
6 to 9 ft occasionally to 11 ft.  

$$
fzus63 klot 280008 aaa
glflm 

lmz080-669-671-673-675-777-779-870-872-874-876-878-280315-
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-
708 pm cdt thu apr 27 2017

sheboygan wi to pentwater mi south...

.tonight...southwest winds 15 to 25 kt diminishing to 10 to 20 
kt. waves 4 to 6 ft occasionally to 8 ft subsiding to 2 to 4 ft. 
.friday...southwest winds 10 to 15 kt backing to northeast. 
chance of rain in the afternoon. waves 1 to 3 ft. 
.friday night...northeast winds 10 to 20 kt becoming north to
30 kt. chance of rain showers in the evening. waves 1 to 3 ft
building to 3 to 5 ft occasionally to 7 ft. 
.saturday...northeast winds to 30 kt. chance of rain showers.
waves 4 to 7 ft occasionally to 9 ft. 
.saturday night...northeast winds to 30 kt becoming east gales to
35 kt. rain showers likely in the evening...then rain showers
overnight. waves 5 to 8 ft occasionally to 10 ft. 
.sunday...east winds to 30 kt. rain showers with a chance of
thunderstorms in the morning...then rain showers in the
afternoon. waves 5 to 8 ft occasionally to 10 ft subsiding to
4 to 7 ft occasionally to 9 ft. 
.sunday night...east winds to 30 kt becoming southeast. rain
showers. waves 4 to 6 ft occasionally to 8 ft. 
.monday...south winds to 30 kt becoming southwest gales to 35 kt.
chance of rain showers. waves 6 to 9 ft occasionally to 11 ft. 
.tuesday...west gales to 35 kt diminishing to 30 kt. waves 6 to
9 ft occasionally to 11 ft.  

$$

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