Great Lakes Forecast
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FZUS63 KMKX 230738
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Milwaukee/Sullivan WI
238 AM CDT Tue Oct 23 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...

Low pressure of 29.8 inches will continue to push across Ontario
into New England today. Northwest winds in the wake of a departed
cold front will remain gusty today, but will remain just below
gales. Meanwhile, high pressure of 30.5 inches will move into
the Dakotas from Saskatchewan today, and then into the lower
Great Lakes on Wednesday, bringing quiet conditions to the region.
Winds will become southerly on Thursday and Friday as low
pressure around 29.6 inches approaches from the northern Plains.

LMZ261-362-364-366-563-565-567-868-231515-
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-
238 AM CDT Tue Oct 23 2018

SHEBOYGAN WI TO PENTWATER MI NORTH...

.TODAY...Northwest winds to 30 kt diminishing to 15 to 25 kt.
Slight chance of rain showers this morning. Waves 4 to 7 ft
occasionally to 9 ft subsiding to 4 to 6 ft occasionally to 8 ft.
.TONIGHT...North winds 15 to 25 kt diminishing to 10 to 15 kt.
Waves 3 to 5 ft subsiding to 2 to 4 ft.
.WEDNESDAY...North winds 10 to 15 kt becoming northwest. Waves
1 to 3 ft.
.WEDNESDAY NIGHT...West winds 5 to 10 kt becoming southwest.
Waves 1 to 2 ft.
.THURSDAY...Southwest winds 10 to 15 kt. Waves 1 to 3 ft.
.THURSDAY NIGHT...Southwest winds 10 to 15 kt. Waves 1 to 3 ft.
.FRIDAY...South winds 5 to 10 kt becoming southeast 10 to 15 kt.
Chance of rain showers. Waves 1 to 2 ft.
.SATURDAY...East winds 10 to 20 kt. Chance of rain showers. Waves
1 to 3 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-231515-
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-
238 AM CDT Tue Oct 23 2018

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.TODAY...North winds 15 to 25 kt diminishing to 10 to 20 kt.
Waves 5 to 8 ft occasionally to 10 ft subsiding to 4 to 6 ft
occasionally to 8 ft.
.TONIGHT...North winds 10 to 20 kt diminishing to 10 to 15 kt.
Waves 4 to 6 ft occasionally to 8 ft subsiding to 2 to 4 ft.
.WEDNESDAY...North winds 5 to 10 kt becoming northeast. Waves
1 to 3 ft.
.WEDNESDAY NIGHT...Northeast winds 5 to 10 kt veering to
southeast. Waves 1 to 2 ft.
.THURSDAY...South winds 5 to 10 kt. Waves 1 ft or less.
.THURSDAY NIGHT...South winds 5 to 10 kt. Waves 1 ft or less.
.FRIDAY...Southeast winds 10 to 15 kt. Waves 1 to 3 ft.
.SATURDAY...East winds 10 to 20 kt. Chance of rain showers. Waves
2 to 4 ft.

$$

LMZ761-231515-
MAFOR 2309/
MICHIGAN NORTH 12740 12730 12830 12820. Waves 4 to 7 ft
occasionally to 9 ft today. Waves 4 to 6 ft occasionally to 8 ft
subsiding to 2 to 4 ft tonight.

MICHIGAN SOUTH 11740 13830 12820 12810. Waves 5 to 8 ft
occasionally to 10 ft subsiding to 4 to 7 ft occasionally to 9 ft
today. Waves 4 to 6 ft occasionally to 8 ft subsiding to 2 to 4
ft tonight.

$$
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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