Great Lakes Forecast
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949
FZUS63 KLOT 190150
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Chicago/Romeoville IL
850 PM CDT Fri May 18 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...Low pressure of 29.8 inches will track just south of
the lake tonight, lift over the eastern Great Lakes Saturday, and
then merge with a 29.6 inch low over Quebec Sunday. A weak trough
of low pressure averaging 29.9 inches will be situated from the
central Plains and Mid Mississippi Valley, to the Ohio Valley
Saturday into early next week, while high pressure of 30.2 inches
builds across the western and central Great Lakes.

LMZ261-362-364-366-563-565-567-868-190945-
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 Fri May 18 2018

SHEBOYGAN WI TO PENTWATER MI NORTH...

.REST OF TONIGHT...East winds 10 to 20 kt. Chance of rain
showers. Waves 3 to 5 ft subsiding to 2 to 4 ft.
.SATURDAY...Northeast winds 10 to 20 kt backing to northwest.
Chance of rain showers in the morning. Patchy fog. Waves 2 to 4 ft
subsiding to 1 to 2 ft.
.SATURDAY NIGHT...North winds 10 to 20 kt. Waves 1 to 2 ft
building to 3 to 5 ft.
.SUNDAY...North winds 10 to 20 kt diminishing to 10 to 15 kt.
Waves 3 to 5 ft.
.SUNDAY NIGHT...North winds 10 to 15 kt becoming northeast. Waves
1 to 3 ft.
.MONDAY...East winds 10 to 15 kt becoming northeast 5 to 10 kt.
Waves 1 to 3 ft.
.MONDAY NIGHT...Northeast winds 10 to 15 kt. Chance of rain
showers. Waves 1 to 2 ft.
.TUESDAY...Northeast winds 10 to 15 kt becoming north. Waves 1 to
3 ft.
.WEDNESDAY...North winds 5 to 10 kt. Waves 1 to 2 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-190945-
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 Fri May 18 2018

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.REST OF TONIGHT...East winds 10 to 20 kt. Rain showers likely.
Patchy fog overnight. Waves 2 to 4 ft.
.SATURDAY...Northeast winds 10 to 20 kt becoming north 10 to
15 kt, and then becoming variable 5 to 10 kt late in the
afternoon. Chance of showers in the morning. Patchy fog. Waves 2
to 4 ft subsiding to 1 to 2 ft.
.SATURDAY NIGHT...North winds 10 to 15 kt increasing to 15 to
25 kt. Patchy fog in the evening. Waves 1 to 2 ft building to
3 to 5 ft.
.SUNDAY...North winds 10 to 20 kt. Chance of rain showers in the
afternoon. Waves 3 to 5 ft.
.SUNDAY NIGHT...Northeast winds 10 to 15 kt becoming east 10 to
20 kt. Chance of rain showers and thunderstorms. Waves 2 to 4 ft.
.MONDAY...East winds 10 to 20 kt diminishing to 10 to 15 kt.
Chance of rain showers. Waves 2 to 4 ft.
.MONDAY NIGHT...East winds 10 to 15 kt veering to southwest.
Chance of showers. Waves 2 to 4 ft.
.TUESDAY...Northwest winds 10 to 15 kt becoming north. Waves 1 to
3 ft.
.WEDNESDAY...North winds 5 to 10 kt. Waves 1 to 2 ft.

$$
LMZ761-190945-
MAFOR 1903/
MICHIGAN NORTH 12220 11226 11126 11120 11820 11710 11820. Chance
of showers late this evening and Saturday. Waves 3 to 5 ft
subsiding to 2 to 4 ft overnight. Waves 2 to 4 ft subsiding to 1
to 2 ft Saturday. Waves 1 to 2 ft Saturday evening.

MICHIGAN SOUTH 13226 11120 12810 11900 11810. Chance of showers
late Saturday. Waves 2 to 4 ft overnight. Waves 2 to 4 ft
subsiding to 1 to 2 ft Saturday. Waves 1 to 2 ft Saturday
evening.


$$


JEE

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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