Great Lakes Forecast
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000
FZUS63 KLOT 220743
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Chicago/Romeoville IL
243 AM CDT Sun Oct 22 2017

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 29.2 inches is centered over northern
Manitoba this morning and will lift to Hudson Bay today while a
trailing cold front moves across Lake Michigan. Another low of
29.4 inches will move from Alberta Sunday to Ontario Monday
pushing a stronger cold front across Lake Michigan. Low pressure
of 29.8 inches will form over the upper Ohio Valley Monday night
and lift into Quebec Tuesday deepening to 29.3 inches.

LMZ261-362-364-366-563-565-567-868-221515-
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-
243 AM CDT Sun Oct 22 2017

SHEBOYGAN WI TO PENTWATER MI NORTH...

.TODAY...South winds to 30 kt veering to west to 30 kt then
northwest 10 to 20 kt late. A few gale force gusts to 35 kt
possible through the morning. Chance of showers this
morning...then showers this afternoon. Waves 7 to 10 ft
occasionally to 13 ft subsiding to 5 to 8 ft occasionally to 10
ft.
.TONIGHT...West winds 10 to 15 kt. Chance of showers in the
evening...then slight chance of showers overnight. Waves 4 to 6 ft
occasionally to 8 ft subsiding to 2 to 4 ft.
.MONDAY...Southwest winds 10 to 15 kt increasing to 10 to 20 kt.
Waves 2 to 4 ft.
.MONDAY NIGHT...West winds 15 to 25 kt becoming northwest to
30 kt. Chance of showers in the evening...then showers likely
overnight. Waves 2 to 4 ft building to 3 to 5 ft.
.TUESDAY...Northwest winds to 30 kt increasing to gales to 40 kt
in the afternoon. Showers likely in the morning...then showers in
the afternoon. Waves 4 to 6 ft occasionally to 8 ft building to
6 to 9 ft occasionally to 12 ft.
.TUESDAY NIGHT...Northwest gales to 40 kt diminishing to gales to
35 kt. Rain showers likely. Waves 7 to 10 ft occasionally to
13 ft.
.WEDNESDAY...Northwest winds 15 to 25 kt diminishing to 10 to
20 kt. Waves 4 to 7 ft occasionally to 9 ft subsiding to 3 to
5 ft.
.THURSDAY...Southeast winds 10 to 20 kt becoming south 15 to
25 kt. Waves 2 to 4 ft building to 3 to 5 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-221515-
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-
243 AM CDT Sun Oct 22 2017

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.TODAY...South winds to 30 kt veering to northwest. Chance of
showers and slight chance of thunderstorms this morning...then
showers this afternoon. Waves 6 to 9 ft occasionally to 12 ft.
.TONIGHT...North winds 15 to 25 kt becoming northwest 10 to 20
kt. Showers likely in the evening...then slight chance of showers
overnight. Waves 5 to 8 ft occasionally to 10 ft subsiding to 3
to 5 ft.
.MONDAY...Northwest winds 10 to 15 kt becoming southwest 10 to
20 kt. Chance of showers in the morning. Waves 2 to 4 ft.
.MONDAY NIGHT...West winds 15 to 25 kt becoming northwest to
30 kt. Chance of showers. Waves 2 to 4 ft building to 4 to 6 ft
occasionally to 8 ft.
.TUESDAY...Northwest winds to 30 kt increasing to gales to 35 kt.
Showers likely. Waves 4 to 7 ft occasionally to 9 ft building to
6 to 9 ft occasionally to 12 ft.
.TUESDAY NIGHT...Northwest gales to 35 kt diminishing to 30 kt.
Chance of rain showers. Waves 7 to 10 ft occasionally to 13 ft.
.WEDNESDAY...West winds to 30 kt becoming northwest 10 to 20 kt
in the afternoon. Chance of rain showers. Waves 5 to 8 ft
occasionally to 10 ft subsiding to 4 to 6 ft occasionally to
8 ft.
.THURSDAY...South winds 10 to 20 kt increasing to 30 kt in the
afternoon. Waves 2 to 4 ft building to 3 to 5 ft.

$$

LMZ761-221515-
MAFOR 2209/
MICHIGAN NORTH 13440 19450 11646 11726 11616 12610. Chance of
showers this morning. Chance of showers this evening. Waves 7 to
10 feet occasionally to 13 feet subsiding to 5 to 8 feet
occasionally to 10 feet today. Waves 4 to 6 feet occasionally to
8 feet subsiding to 2 to 4 feet tonight.

MICHIGAN SOUTH 13440 11446 19746 11746 11836 12720. Chance of
showers this morning. Waves 6 to 9 feet occasionally to 12 feet
today. Waves 5 to 8 feet occasionally to 10 feet subsiding to 3
to 5 feet tonight.

$$

BMD

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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