Great Lakes Forecast
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603
FZUS63 KLOT 141953
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Chicago/Romeoville IL
253 PM CDT Mon May 14 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 move across the
region tonight with a cold front moving south down the lake on
Tuesday. High pressure of 30.2 inches will travel from Manitoba
tonight to Quebec Tuesday night and a slightly stronger high
will take a similar path Wednesday night through Thursday night.

LMZ261-362-364-366-563-565-567-868-150200-
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-
253 PM CDT Mon May 14 2018

SHEBOYGAN WI TO PENTWATER MI NORTH...

.TONIGHT...Southwest winds 10 to 15 kt...shifting north late.
Chance of rain showers and thunderstorms. Waves 1 to 3 ft.
.TUESDAY...North winds 15 to 25 kt. Waves building to 4 to 6 ft
occasionally to 8 ft.
.TUESDAY NIGHT...Northeast winds 15 to 25 kt diminishing to 10 to
15 kt late in the evening, then becoming southeast after midnight
becoming south late. Waves 3 to 5 ft subsiding to 1 to 3 ft.
.WEDNESDAY...Southwest winds 10 to 20 kt. Waves 2 to 4 ft.
.WEDNESDAY NIGHT...Southwest winds 10 to 20 kt veering to
northwest 5 to 10 kt overnight. Waves 2 to 4 ft subsiding to 1 to
3 ft.
.THURSDAY...Northeast winds 10 to 20 kt. Waves 1 to 3 ft building
to 2 to 4 ft.
.THURSDAY NIGHT...Northeast winds 10 to 15 kt becoming east.
Waves 2 to 4 ft.
.FRIDAY...East winds 10 to 20 kt becoming northeast. Waves 1 to
3 ft.
.SATURDAY...East winds 10 to 15 kt backing to north. Waves 1 to
2 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-150200-
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-
253 PM CDT Mon May 14 2018

SHEBOYGAN WI TO PENTWATER MI SOUTH...

...DENSE FOG ADVISORY IN EFFECT UNTIL 9 PM CDT THIS EVENING...

.TONIGHT...East winds 10 to 15 kt backing to northwest. Areas of
dense fog this evening. Rain showers and thunderstorms likely.
Waves 1 to 3 ft.
.TUESDAY...North winds 10 to 20 kt increasing to 15 to 25 kt.
Chance of rain showers and thunderstorms in the morning. Waves
building to 4 to 6 ft occasionally to 8 ft.
.TUESDAY NIGHT...North winds 15 to 25 kt becoming northeast 10 to
20 kt late in the evening, then diminishing to 5 to 10 kt after
midnight becoming east late. Waves 4 to 6 ft occasionally to 8 ft
subsiding to 2 to 4 ft.
.WEDNESDAY...Northeast winds 5 to 10 kt backing to northwest.
Waves 1 to 3 ft.
.WEDNESDAY NIGHT...Southeast winds 5 to 10 kt becoming northeast.
Waves 1 to 2 ft.
.THURSDAY...Northeast winds 5 to 10 kt increasing to 10 to 15 kt.
Waves 1 to 2 ft.
.THURSDAY NIGHT...Northeast winds 10 to 20 kt becoming east.
Waves 2 to 4 ft.
.FRIDAY...Northeast winds 10 to 20 kt diminishing to 10 to 15 kt.
Waves 2 to 4 ft.
.SATURDAY...Southeast winds 5 to 10 kt becoming east 10 to 15 kt.
Waves 1 to 2 ft.

$$

LMZ761-150200-
MAFOR 1421/
MICHIGAN NORTH 13510 11610 19810 11820 13830. Chance of rain
showers and thunderstorms this evening. Waves 1 to 3 ft tonight
building to 4 to 6 ft occasionally to 8 ft Tuesday.

MICHIGAN SOUTH 12214 12719 12820 12830. Rain showers and
thunderstorms likely tonight. Chance of rain showers and
thunderstorms Tuesday morning. Waves 1 to 3 ft tonight building
to 4 to 6 ft occasionally to 8 ft Tuesday.

$$

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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