Great Lakes Forecast
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000
FZUS63 KMKX 211359
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Milwaukee/Sullivan WI
859 AM CDT Sun Apr 21 2019

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...

Weak high pressure of 29.9 inches will move into the northeastern
part of the country today. A warm front will develop over
northern Wisconsin into northern lower Michigan. South winds will
increase today, though winds will remain southeasterly over far
northern portions of the lake.

Low pressure of 29.5 inches will slowly move from western Kansas
to southeast Ontario tonight into Tuesday. South winds will linger
and remain gusty at times tonight into Monday, with the gusty
winds becoming northwest Tuesday after a cold front moves through
the region. These winds should weaken Tuesday night into
Wednesday, with weak high pressure of 30.1 inches moving from the
central Plains into Wisconsin.

LMZ261-362-364-366-563-565-567-868-212115-
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-
859 AM CDT Sun Apr 21 2019

SHEBOYGAN WI TO PENTWATER MI NORTH...

.REST OF TODAY...South winds 10 to 15 kt becoming southeast 10 to
20 kt. Waves 2 to 4 ft.
.TONIGHT...Southeast winds 10 to 20 kt becoming south. Slight
chance of rain showers overnight. Waves 3 to 5 ft.
.MONDAY...South winds 10 to 20 kt becoming southeast. Chance of
rain in the afternoon. Waves 3 to 5 ft.
.MONDAY NIGHT...East winds 10 to 20 kt backing to north 15 to
25 kt. Chance of rain and thunderstorms in the evening, then rain
likely with a chance of thunderstorms overnight. Waves 4 to 6 ft
occasionally to 8 ft.
.TUESDAY...Northwest winds 15 to 25 kt. Chance of rain. Waves
4 to 6 ft occasionally to 8 ft.
.TUESDAY NIGHT...Northwest winds 15 to 25 kt diminishing to 10 to
20 kt. Waves 3 to 5 ft subsiding to 2 to 4 ft.
.WEDNESDAY...Northwest winds 10 to 15 kt becoming southwest.
Waves 1 to 3 ft.
.THURSDAY...South winds 10 to 20 kt becoming southwest. Chance of
rain. Waves 2 to 4 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-212115-
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-
859 AM CDT Sun Apr 21 2019

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.REST OF TODAY...South winds 10 to 15 kt increasing to 10 to
20 kt. Waves 1 to 2 ft building to 2 to 4 ft.
.TONIGHT...South winds 10 to 20 kt. Waves 3 to 5 ft.
.MONDAY...South winds 10 to 20 kt. Waves 3 to 5 ft.
.MONDAY NIGHT...South winds 15 to 25 kt. Chance of thunderstorms
in the evening, then chance of rain and thunderstorms overnight.
Waves 4 to 6 ft occasionally to 8 ft.
.TUESDAY...Northwest winds 15 to 25 kt becoming north. Chance of
rain. Waves 4 to 6 ft occasionally to 8 ft.
.TUESDAY NIGHT...North winds 10 to 20 kt becoming northwest.
Waves 3 to 5 ft.
.WEDNESDAY...Northwest winds 10 to 15 kt becoming north 5 to
10 kt. Waves 1 to 3 ft.
.THURSDAY...South winds 10 to 20 kt becoming southwest. Waves
1 to 3 ft.

$$

LMZ761-212115-
MAFOR 2115/
MICHIGAN NORTH 12420 14320 12420. Waves 2 to 4 ft building to 3
to 5 ft this afternoon. Waves 3 to 5 ft tonight and Monday
morning.

MICHIGAN SOUTH 11410 14420 13420. Waves 2 to 4 ft building to 3
to 5 ft this afternoon. Waves 3 to 5 ft tonight and Monday
morning.

$$


Gagan

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

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


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