Great Lakes Forecast
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FZUS63 KMKX 160203
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Milwaukee/Sullivan WI
903 PM CDT Mon Apr 15 2024

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...

Easterly winds will continue across the lake overnight as low
pressure of 29.2 inches continues north towards the Great Lakes
region. Winds on Tuesday will remain easterly, but will begin to
accelerate throughout the day as the low approaches, leading to
the potential for gales across the lake by Tuesday evening. As
such, a Gale Watch is in effect from Tuesday evening through
Wednesday evening. Winds across much of the lake will decelerate
and shift southerly to southwesterly Wednesday as the low moves
north across central Wisconsin, but easterly gales are still
possible over the far northern portion through Wednesday evening
before also turning westerly and decelerating. Westerly winds will
then continue Thursday morning before becoming southwesterly by
Thursday afternoon for the entire lake as the low departs the
area.

LMZ080-669-671-673-675-777-779-870-872-874-876-878-160945-
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-
903 PM CDT Mon Apr 15 2024

SHEBOYGAN WI TO PENTWATER MI SOUTH...

...GALE WATCH IN EFFECT FROM TUESDAY EVENING THROUGH WEDNESDAY
MORNING...

.REST OF TONIGHT...Northeast winds 10 to 15 kt becoming east
10 to 20 kt. Waves 1 to 3 ft.
.TUESDAY...East winds 10 to 20 kt increasing to 30 kt. Chance of
rain showers in the afternoon. Waves 2 to 4 ft building to 4 to
7 ft occasionally to 9 ft.
.TUESDAY NIGHT...East gales to 40 kt becoming southeast gales to
35 kt. Rain showers with a chance of thunderstorms. Waves 6 to
9 ft occasionally to 12 ft building to 8 to 12 ft occasionally to
16 ft.
.WEDNESDAY...Southeast winds to 30 kt becoming south 15 to 25 kt.
Showers with a chance of thunderstorms. Waves 7 to 10 ft
occasionally to 13 ft subsiding to 5 to 8 ft occasionally to
10 ft.
.WEDNESDAY NIGHT...West winds 10 to 20 kt increasing to 15 to
25 kt. Chance of showers in the evening. Waves 4 to 6 ft
occasionally to 8 ft.
.THURSDAY...West winds 10 to 20 kt becoming southwest 10 to
15 kt. Waves 3 to 5 ft subsiding to 2 to 4 ft.
.THURSDAY NIGHT...West winds 10 to 20 kt. Chance of rain showers.
Waves 1 to 3 ft.
.FRIDAY...Northwest winds 15 to 25 kt becoming west. Waves 2 to
4 ft.
.SATURDAY...Northwest winds 10 to 20 kt. Waves 3 to 5 ft.

$$

LMZ364-366-563-565-567-868-160945-
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-
903 PM CDT Mon Apr 15 2024

ROCK ISLAND PASSAGE TO CHARLEVOIX MI SOUTH TO SHEBOYGAN WI TO
PENTWATER MI...

...GALE WATCH IN EFFECT FROM TUESDAY EVENING THROUGH WEDNESDAY
MORNING...

.REST OF TONIGHT...Northeast winds 10 to 15 kt. Waves 1 to 2 ft.
.TUESDAY...East winds 10 to 15 kt increasing to 15 to 25 kt.
Waves 3 to 5 ft.
.TUESDAY NIGHT...East winds to 30 kt increasing to gales to 40 kt
late in the evening, then becoming east gales to 40 kt after
midnight becoming southeast gales to 35 kt late. Rain showers
likely in the evening, then rain showers overnight. Waves 4 to
7 ft occasionally to 9 ft building to 8 to 12 ft occasionally to
16 ft.
.WEDNESDAY...Southeast gales to 35 kt diminishing to 30 kt. Rain
showers in the morning, then rain showers with a chance of
thunderstorms in the afternoon. Waves 7 to 10 ft occasionally to
13 ft subsiding to 5 to 8 ft occasionally to 10 ft.
.WEDNESDAY NIGHT...South winds 15 to 25 kt veering to west 10 to
20 kt. Rain showers in the evening. Waves 4 to 6 ft occasionally
to 8 ft subsiding to 2 to 4 ft.
.THURSDAY...West winds 10 to 20 kt becoming southwest. Waves 2 to
4 ft.
.THURSDAY NIGHT...Southwest winds 10 to 20 kt becoming west.
Chance of rain showers. Waves 1 to 3 ft.
.FRIDAY...West winds 15 to 25 kt. Waves 2 to 4 ft.
.SATURDAY...Northwest winds 15 to 25 kt becoming west 10 to
20 kt. Waves 2 to 4 ft.

$$

LMZ261-362-160945-
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-
903 PM CDT Mon Apr 15 2024

ROCK ISLAND PASSAGE TO CHARLEVOIX MI NORTH...

...GALE WATCH IN EFFECT FROM TUESDAY EVENING THROUGH WEDNESDAY
EVENING...

.REST OF TONIGHT...North winds 10 to 15 kt diminishing to 5 to
10 kt late this evening, then becoming north 5 to 10 kt after
midnight becoming northeast late. Waves 1 to 2 ft.
.TUESDAY...Northeast winds 5 to 10 kt becoming east 15 to 25 kt.
Waves 1 to 2 ft building to 2 to 4 ft.
.TUESDAY NIGHT...East winds to 30 kt increasing to storm force
winds to 50 kt. Chance of rain showers in the evening, then rain
showers overnight. Waves 4 to 7 ft occasionally to 9 ft building
to 7 to 10 ft occasionally to 13 ft.
.WEDNESDAY...East storm force winds to 50 kt diminishing to gales
to 45 kt. Rain showers. Waves 8 to 11 ft occasionally to 14 ft.
.WEDNESDAY NIGHT...East gales to 40 kt backing to northwest 15 to
25 kt overnight. Rain showers in the evening, then chance of rain
showers overnight. Waves 6 to 9 ft occasionally to 12 ft
subsiding to 3 to 5 ft.
.THURSDAY...West winds 10 to 20 kt becoming southwest. Waves 1 to
3 ft.
.THURSDAY NIGHT...Southwest winds 10 to 20 kt becoming west.
Chance of rain showers. Waves 1 to 2 ft.
.FRIDAY...West winds 10 to 20 kt increasing to 15 to 25 kt. Waves
2 to 4 ft.
.SATURDAY...Northwest winds 15 to 25 kt. Waves 2 to 4 ft.

$$

&&STORM

LMZ761-160945-
MAFOR 1604/
MICHIGAN NORTH 13110 11220 11120 11230 11246 11256. Waves 2 feet
or less overnight. Waves 1 to 3 feet building to 2 to 4 feet
Tuesday. Waves 3 to 6 feet building to 5 to 8 feet Tuesday
evening.

MICHIGAN SOUTH 11110 12220 12230 11240 11256 11266. A chance of
thunderstorms Tuesday evening. Waves 1 to 3 feet overnight. Waves
1 to 3 feet building to 4 to 7 feet Tuesday. Waves 5 to 8 feet
building to 8 to 11 feet Tuesday evening.

$$


Falkinham

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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