Great Lakes Forecast
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FZUS63 KLOT 190749
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Chicago/Romeoville IL
249 AM CDT Sat May 19 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 this morning, lift to the eastern Great Lakes this
afternoon, and then lift to Quebec by 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 today into
early next week, while high pressure of 30.2 inches builds across
the western and central Great Lakes.

LMZ261-362-364-366-563-565-567-868-191530-
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-
249 AM CDT Sat May 19 2018

SHEBOYGAN WI TO PENTWATER MI NORTH...

.TODAY...Northeast winds 10 to 20 kt becoming north. Rain showers
this morning. Patchy fog. Waves 2 to 4 ft subsiding to 1 to 3 ft.
.TONIGHT...North winds 15 to 25 kt. Occasional gusts to 30 kt.
Waves 2 to 4 ft building to 4 to 7 ft occasionally to 9 ft.
.SUNDAY...North winds 15 to 25 kt diminishing to 10 to 20 kt.
Waves 4 to 6 ft occasionally to 8 ft subsiding to 3 to 5 ft.
.SUNDAY NIGHT...North winds 10 to 15 kt becoming northeast. Waves
1 to 3 ft subsiding to 1 to 2 ft.
.MONDAY...East winds 5 to 10 kt backing to north. Waves 1 to
2 ft.
.MONDAY NIGHT...Northeast winds 5 to 10 kt becoming east. Waves
1 ft or less.
.TUESDAY...North winds 5 to 10 kt backing to southwest. Waves
1 ft or less.
.WEDNESDAY...Southwest winds 5 to 10 kt veering to northwest.
Waves 1 ft or less.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-191530-
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-
249 AM CDT Sat May 19 2018

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.TODAY...Northeast winds 10 to 15 kt becoming north, then
becoming variable less than 10 kt in the afternoon. Showers this
morning. Patchy fog. Waves 2 to 4 ft subsiding to 1 to 2 ft.
.TONIGHT...Northeast winds 10 to 20 kt becoming north to 30 kt,
then diminishing to 15 to 25 kt late. Patchy fog in the evening.
Slight chance of rain showers in the evening, then chance of rain
showers overnight. Waves building to 4 to 6 ft occasionally to 8
ft.
.SUNDAY...North winds 15 to 25 kt diminishing to 10 to 20 kt.
Chance of rain showers. Waves 4 to 6 ft occasionally to 8 ft
subsiding to 3 to 5 ft.
.SUNDAY NIGHT...Northeast winds 10 to 20 kt. Chance of rain
showers. Waves 3 to 5 ft.
.MONDAY...East winds 10 to 20 kt becoming northeast. Chance of
rain showers in the morning. Waves 2 to 4 ft.
.MONDAY NIGHT...Northeast winds 10 to 15 kt diminishing to 5 to
10 kt. Waves 1 to 2 ft.
.TUESDAY...North winds 5 to 10 kt. Waves 1 ft or less.
.WEDNESDAY...Southwest winds 5 to 10 kt backing to northeast.
Waves 1 ft or less.

$$

LMZ761-191530-
MAFOR 1909/
MICHIGAN NORTH 11226 11116 11126 12820 13830. Chance of showers
today. Waves 2 to 4 ft subsiding to 1 to 3 ft today. Waves 2 to 4
ft building to 4 to 7 ft occasionally to 9 ft tonight.

MICHIGAN SOUTH 11116 11816 11810 12900 11120 11130 11830. Waves 2
to 4 ft subsiding to 1 to 2 ft today. Waves building to 4 to 6 ft
occasionally to 8 ft tonight.

$$


Rodriguez

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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