Great Lakes Forecast
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000
FZUS63 KLOT 250200
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Chicago/Romeoville IL
900 PM CDT Mon Jul 24 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 over Lake Michigan will
slowly move east reaching the eastern Great Lakes by Tuesday
night. Low pressure of 29.5 inches will move east to James Bay on
Wednesday, with a trailing trough moving over the lake Wednesday
night. Low pressure around 29.7 inches is expected to develop on
this trough by late Wednesday night, shifting a cold front south
across the lake by Thursday morning. High pressure of 30.1 inches
will follow, building over the lake for the weekend.

LMZ261-362-364-366-563-565-567-868-250930-
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-
900 PM CDT Mon Jul 24 2017

SHEBOYGAN WI TO PENTWATER MI NORTH...

.REST OF TONIGHT...Northeast winds 10 to 15 kt veering to
southeast 10 to 15 kt. Waves 2 to 4 ft subsiding to 1 to 2 ft
overnight.
.TUESDAY...South winds 10 to 15 kt increasing to 15 to 25 kt.
Waves building to 2 to 4 ft.
.TUESDAY NIGHT...South winds 10 to 20 kt becoming southwest 15
to 25 kt. Chance of showers and thunderstorms overnight. Waves 4
to 6 ft occasionally 8 ft.
.WEDNESDAY...Southwest winds 15 to 25 kt diminishing to 10 to 20
kt. Chance of showers and thunderstorms in the morning...then
showers and thunderstorms likely in the afternoon. Waves
subsiding to 3 to 5 ft.
.WEDNESDAY NIGHT...West winds 10 to 20 kt veering to north.
Showers and thunderstorms likely in the evening...then chance of
showers and thunderstorms overnight. Waves 3 to 5 ft subsiding
to 1 to 3 ft.
.THURSDAY...North winds 10 to 20 kt increasing to 15 to 25 kt.
Chance of showers in the morning. Waves building to 3 to 5 ft.
.THURSDAY NIGHT...North winds 15 to 25 kt becoming northeast 10
to 20 kt. Waves 3 to 5 ft.
.FRIDAY...Northeast winds 10 to 20 kt. Waves 2 to 4 ft.
.SATURDAY...North winds 10 to 15 kt. Waves 1 to 3 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-250930-
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-
900 PM CDT Mon Jul 24 2017

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.REST OF TONIGHT...Northeast winds 10 to 20 kt veering to
southeast. Waves 3 to 5 ft subsiding to 1 to 3 ft late.
.TUESDAY...South winds 10 to 20 kt becoming southeast. Waves 1
to 3 ft.
.TUESDAY NIGHT...Southeast winds 10 to 20 kt becoming south.
Waves 1 to 3 ft.
.WEDNESDAY...South winds 10 to 20 kt. Waves 2 to 4 ft.
.WEDNESDAY NIGHT...South winds 10 to 20 kt becoming southwest.
Chance of showers and thunderstorms in the evening...then showers
and thunderstorms likely overnight. Waves 2 to 4 ft.
.THURSDAY...North winds 10 to 20 kt increasing to 30 kt in the
afternoon. Chance of showers and thunderstorms in the morning.
Waves building to 4 to 6 ft occasionally to 8 ft.
.THURSDAY NIGHT...North winds to 30 kt becoming northeast 15 to
25 kt. Waves 4 to 6 ft occasionally to 8 ft.
.FRIDAY...Northeast winds 10 to 20 kt becoming north 15 to 25 kt.
Waves 3 to 5 ft.
.SATURDAY...Northeast winds 10 to 15 kt becoming north 10 to 20
kt. Waves 2 to 4 ft.

$$
LMZ761-250930-
MAFOR 2503/
MICHIGAN NORTH 11110 11210 11310 11410 12420 11430 11420. Waves 1
to 3 ft overnight. Waves 2 to 4 ft Tuesday. Waves 3 to 5 ft
occasionally to 7 ft Tuesday evening.

MICHIGAN SOUTH 11120 11220 11320 13420 12320. Waves 3 to 5 ft
subsiding to 2 to 4 ft overnight. Waves 2 to 4 ft Tuesday and
Tuesday evening.

$$


KMD

Experimental modernized open lake forecast is available online at
weather.gov/lot/glftable

Graphical marine forecasts are available online at:
weather.gov/greatlakes


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