Great Lakes Forecast
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000
FZUS63 KLOT 242105
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Chicago/Romeoville IL
305 PM CST Sat Feb 24 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...High pressure of 30.2 inches over Quebec will
continue to move to the east tonight. Meanwhile, low pressure of
29.7 inches over Missouri will deepen to 29.3 inches as it quickly
moves to near Milwaukee by midnight tonight, then continue to
deepen to near 29.0 inches as it reaches James Bay by early Sunday
evening. Weak high pressure of 30.2 inches will move from the
Southern Plains this evening to the Ohio Valley and Lower Great
Lakes region by Monday morning in the wake of the deep low. This
high will then slowly move to the Atlantic coast through Tuesday.

LMZ261-362-364-366-563-565-567-868-250445-
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-
305 PM CST Sat Feb 24 2018

SHEBOYGAN WI TO PENTWATER MI NORTH...

...GALE WARNING IN EFFECT FROM 7 PM CST THIS EVENING THROUGH
SUNDAY EVENING...

.TONIGHT...East winds to 30 kt becoming southeast gales to 40 kt
this evening...then becoming southwest gales to 45 kt late. Rain
with possible snow and freezing rain this evening...then rain and
slight chance of freezing rain overnight. Waves 3 to 5 ft building
to 7 to 10 ft occasionally to 13 ft.
.SUNDAY...Southwest gales to 45 kt. Occasional storm force winds
to 50 kt in the morning. Slight chance of snow in the morning.
Waves 12 to 16 ft occasionally to 21 ft.
.SUNDAY NIGHT...West gales to 40 kt diminishing to 15 to 25 kt.
Waves 8 to 11 ft occasionally to 14 ft subsiding to 4 to 6 ft
occasionally to 8 ft.
.MONDAY...Southwest winds 10 to 20 kt. Waves 3 to 5 ft.
.MONDAY NIGHT...Southwest winds 15 to 25 kt. Waves 4 to 6 ft
occasionally to 8 ft.
.TUESDAY...Southwest winds 15 to 25 kt diminishing to 10 to
20 kt. Waves 3 to 5 ft subsiding to 2 to 4 ft.
.TUESDAY NIGHT...Southeast winds 10 to 15 kt backing to
northeast. Chance of rain, snow and freezing rain. Waves 1 to
3 ft.
.WEDNESDAY...Northeast winds 10 to 15 kt increasing to 10 to
20 kt. Waves 1 to 3 ft.
.THURSDAY...East winds to 30 kt becoming northeast gales to
35 kt. Rain and snow likely. Waves 5 to 8 ft occasionally to
10 ft building to 7 to 10 ft occasionally to 13 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-250445-
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-
305 PM CST Sat Feb 24 2018

SHEBOYGAN WI TO PENTWATER MI SOUTH...

...GALE WARNING IN EFFECT FROM 7 PM CST THIS EVENING THROUGH
SUNDAY AFTERNOON...

.TONIGHT...East winds to 30 kt becoming southeast gales to 40 kt
this evening...then becoming southwest gales to 45 kt late. Rain
and slight chance of thunderstorms this evening...then rain
overnight. Waves 4 to 7 ft occasionally to 9 ft building to 8 to
11 ft occasionally to 14 ft.
.SUNDAY...West gales to 45 kt becoming southwest gales to 35
kt...then diminishing to 30 kt. Waves 10 to 14 ft occasionally to
18 ft subsiding to 7 to 10 ft occasionally to 13 ft.
.SUNDAY NIGHT...Southwest winds to 30 kt becoming west 10 to 20
kt. Waves 5 to 8 ft occasionally to 10 ft subsiding to 3 to 5 ft.
.MONDAY...Southwest winds 10 to 20 kt becoming south. Waves 2 to
4 ft.
.MONDAY NIGHT...South winds 10 to 20 kt becoming southwest. Waves
3 to 5 ft.
.TUESDAY...South winds 10 to 20 kt. Waves 2 to 4 ft.
.TUESDAY NIGHT...South winds 10 to 20 kt becoming southwest.
Chance of rain. Waves 1 to 3 ft.
.WEDNESDAY...West winds 10 to 15 kt veering to east. Waves 1 to
3 ft.
.THURSDAY...East winds to 30 kt backing to north. Rain likely.
Waves 4 to 7 ft occasionally to 9 ft building to 6 to 9 ft
occasionally to 12 ft.

$$

LMZ761-250445-
MAFOR 2422/
MICHIGAN NORTH...Gale Warning in effect...11240 11256 12357
14566. Chance of snow this evening. Waves 3 to 5 ft building to 7
to 10 ft occasionally to 13 ft tonight. Waves 12 to 16 ft
occasionally to 21 ft Sunday.

MICHIGAN SOUTH...Gale Warning in effect...11240 12356 11556 12660
12550. Chance of rain early this evening. Waves 4 to 7 ft
occasionally to 9 ft building to 8 to 11 ft occasionally to 14 ft
tonight. Waves 10 to 14 ft occasionally to 18 ft subsiding to 7
to 10 ft occasionally to 13 ft Sunday.

$$


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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