Great Lakes Forecast
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000
FZUS63 KMKX 190151
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Milwaukee/Sullivan WI
851 PM CDT Thu Jul 18 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...

Low pressure around 29.2 inches over northern Ontario and high
pressure over the southeast states will bring a period of elevated
southwest winds to Lake Michigan tonight. There will be somewhat
of a lull on Friday then low pressure of 29.7 inches will move
across the northern portion of the lake Friday night into Saturday
bringing another period of elevated southwest winds. Rounds of
thunderstorms are expected through Saturday. Then a front will
slide down the lake Saturday afternoon and be the focus for
additional thunderstorms. Look for northerly winds and a dry
stretch of weather in the wake of that system as high pressure of
30.2 builds into the Northern Plains Sunday and shifts into Iowa
by Tuesday.

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-
851 PM CDT Thu Jul 18 2019

SHEBOYGAN WI TO PENTWATER MI NORTH...

.REST OF TONIGHT...South winds 15 to 25 kt becoming southwest
10 to 20 kt. Slight chance of showers and thunderstorms through
early evening, then chance of showers and thunderstorms
overnight. Waves 3 to 5 ft subsiding to 2 to 4 ft.
.FRIDAY...Southwest winds 10 to 20 kt becoming south. Slight
chance of showers and thunderstorms in the morning. Waves 2 to
4 ft.
.FRIDAY NIGHT...South winds 10 to 15 kt becoming southwest 10 to
20 kt. Chance of showers and thunderstorms. Waves 1 to 3 ft.
.SATURDAY...West winds 10 to 20 kt becoming northwest. Chance of
showers and thunderstorms. Waves 1 to 3 ft.
.SATURDAY NIGHT...North winds 10 to 15 kt diminishing to 5 to
10 kt. Chance of showers and thunderstorms. Waves 1 to 2 ft.
.SUNDAY...North winds 10 to 15 kt increasing to 10 to 20 kt.
Waves 1 to 3 ft.
.SUNDAY NIGHT...North winds 10 to 20 kt. Waves 1 to 3 ft.
.MONDAY...North winds 10 to 15 kt. Waves 1 to 2 ft.
.TUESDAY...West winds 5 to 10 kt increasing to 10 to 15 kt. Waves
1 to 2 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-
851 PM CDT Thu Jul 18 2019

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.REST OF TONIGHT...South winds 10 to 20 kt becoming southwest.
Slight chance of showers and thunderstorms through early evening,
then chance of showers and thunderstorms overnight. Waves 3 to
5 ft.
.FRIDAY...Southwest winds 10 to 20 kt becoming south. Slight
chance of showers and thunderstorms in the morning. Waves 2 to
4 ft.
.FRIDAY NIGHT...South winds 10 to 20 kt becoming southwest.
Chance of showers and thunderstorms overnight. Waves 1 to 3 ft.
.SATURDAY...Southwest winds 10 to 20 kt becoming west. Chance of
showers and thunderstorms. Waves 1 to 3 ft.
.SATURDAY NIGHT...North winds 10 to 20 kt diminishing to 10 to
15 kt. Chance of showers and thunderstorms. Waves 1 to 3 ft.
.SUNDAY...North winds 10 to 20 kt increasing to 15 to 25 kt.
Chance of showers and thunderstorms in the morning. Waves 1 to
2 ft building to 2 to 4 ft.
.SUNDAY NIGHT...North winds 15 to 25 kt becoming northeast 10 to
20 kt. Waves 3 to 5 ft.
.MONDAY...Northeast winds 10 to 20 kt becoming north. Waves 2 to
4 ft.
.TUESDAY...North winds 5 to 10 kt becoming northwest 10 to 15 kt.
Waves 1 to 2 ft.

$$

LMZ761-190930-
MAFOR 1903/
MICHIGAN NORTH 11520 11529 12520 11510 11520 11420 11410. Chance
of showers and thunderstorms overnight. Waves 3 to 5 ft subsiding
to 2 to 4 ft overnight. Waves 2 to 4 ft Friday and Friday
evening.

MICHIGAN SOUTH 11420 14520 13420. Chance of showers and
thunderstorms overnight. Waves 2 to 4 ft.

$$


Marquardt

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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