Great Lakes Forecast
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000
FZUS63 KLOT 190150
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Chicago/Romeoville IL
850 PM CDT Tue Jul 18 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 the Ohio Valley and
eastern Great lakes will slowly move southeast tonight. A weak
cold front will move south across the lake late tonight and
Wednesday morning. Another area of weak high pressure will move
across the region Wednesday night and Thursday. A trough of low
pressure will develop over the northern and central Plains
Thursday into Friday, and then is expected to move across the
Great Lakes region this weekend

LMZ261-362-364-366-563-565-567-868-190930-
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-
850 PM CDT Tue Jul 18 2017

SHEBOYGAN WI TO PENTWATER MI NORTH...

.REST OF TONIGHT...Southwest winds 10 to 20 kt becoming west
10 to 15 kt after midnight...then becoming northwest around 10 kt
late. Scattered showers and thunderstorms this evening... then
chance of showers and thunderstorms overnight. Waves 3 to 5 ft
subsiding to 1 to 3 ft.
.WEDNESDAY...Northwest winds 10 to 15 kt becoming variable around
10 kt. Slight chance of showers and thunderstorms in the morning.
Waves 1 to 2 ft.
.WEDNESDAY NIGHT...South winds 5 to 10 kt increasing to 10 to
20 kt. Chance of showers and thunderstorms overnight. Waves 2 ft
or less.
.THURSDAY...South winds 10 to 20 kt becoming southwest 10 to
15 kt. Chance of showers and thunderstorms in the morning. Waves
1 to 2 ft.
.THURSDAY NIGHT...Southwest winds 5 to 10 kt. Waves 1 ft or less.
.FRIDAY...South winds 5 to 10 kt. Chance of showers and
thunderstorms. Waves 1 ft or less.
.FRIDAY NIGHT...Northeast winds 5 to 10 kt increasing to 10 to
15 kt. Chance of showers and thunderstorms. Waves 1 ft or less.
.SATURDAY...East winds 10 to 15 kt increasing to 10 to 20 kt.
Waves 1 ft or less.
.SUNDAY...Northwest winds 10 to 15 kt becoming north 10 to 20 kt.
Waves 1 to 2 ft building to 2 to 4 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-190930-
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-
850 PM CDT Tue Jul 18 2017

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.REST OF TONIGHT...South winds 10 to 20 kt becoming southwest
10 to 15 kt after midnight...then becoming west around 10 kt
late. Scattered showers and thunderstorms this evening...then
chance of showers and thunderstorms overnight. Waves 1 to 3 ft.
.WEDNESDAY...Northwest winds 10 to 15 kt becoming north 10 to
20 kt. Chance of showers and thunderstorms in the morning. Waves
1 to 3 ft.
.WEDNESDAY NIGHT...Northeast winds 10 to 15 kt veering to
southeast 10 to 20 kt. Chance of showers and thunderstorms
overnight. Waves 1 to 2 ft.
.THURSDAY...South winds 10 to 20 kt diminishing to 10 to 15 kt.
Showers and thunderstorms likely in the morning...then chance of
showers and thunderstorms in the afternoon. Waves 1 to 3 ft.
.THURSDAY NIGHT...South winds 10 to 15 kt. Chance of showers and
thunderstorms. Waves 1 to 2 ft.
.FRIDAY...Southeast winds 5 to 10 kt. Chance of showers and
thunderstorms. Waves 1 to 2 ft.
.FRIDAY NIGHT...South winds 10 to 15 kt. Chance of showers and
thunderstorms. Waves 1 to 2 ft.
.SATURDAY...Southeast winds 10 to 15 kt increasing to 10 to
20 kt. Chance of showers and thunderstorms. Waves 1 to 2 ft.
.SUNDAY...West winds 10 to 15 kt. Waves 1 to 3 ft.

$$

LMZ761-190930-
MAFOR 1903/
MICHIGAN NORTH 11520 11610 11700 12710 12910 19510 11400.
Scattered showers and thunderstorms late this evening then chance
of showers and thunderstorms overnight. Waves 3 to 5 feet
subsiding to 1 to 3 ft overnight. Waves 1 to 2 feet Wednesday and
Wednesday evening.

MICHIGAN SOUTH 11420 11510 11600 11710 13820 11110. Scattered
showers and thunderstorms late this evening then chance of
showers and thunderstorms overnight and Wednesday morning. Waves
1 to 3 feet.

$$

RC

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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