Great Lakes Forecast
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FZUS63 KLOT 250751
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Chicago/Romeoville IL
251 AM CDT Mon Sep 25 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 29.7 inches over Ontario will move to
James Bay today...while high pressure of 30.1 inches slowly
drifts from the eastern Great Lakes toward New England and
weakens. Another low of 29.7 inches will lift across the northern
Great Lakes Tuesday and will trail a cold front across the lake
Tuesday night. High pressure of 30.2 inches will spread across the
Great Plains into Illinois and Indiana through Thursday.

LMZ261-362-364-366-563-565-567-868-251530-
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-
251 AM CDT Mon Sep 25 2017

SHEBOYGAN WI TO PENTWATER MI NORTH...

.TODAY...South winds 10 to 20 kt diminishing to 10 to 15 kt.
Waves 1 to 3 ft.
.TONIGHT...South winds 10 to 15 kt becoming southeast. Waves 1 to
2 ft.
.TUESDAY...South winds 10 to 15 kt becoming southwest 10 to
20 kt. Chance of showers in the afternoon. Waves 1 to 2 ft.
.TUESDAY NIGHT...West winds 10 to 20 kt becoming northwest.
Chance of showers in the evening. Waves 1 to 3 ft building to
2 to 4 ft.
.WEDNESDAY...Northwest winds 10 to 20 kt. Waves 2 to 4 ft.
.WEDNESDAY NIGHT...Northwest winds 10 to 20 kt. Waves 2 to 4 ft.
.THURSDAY...West winds 10 to 15 kt becoming southwest 10 to
20 kt. Waves 2 to 4 ft.
.FRIDAY...Northwest winds to 30 kt becoming north. Waves 6 to
9 ft occasionally to 12 ft building to 7 to 10 ft occasionally to
13 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-251530-
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-
251 AM CDT Mon Sep 25 2017

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.TODAY...South winds 10 to 15 kt becoming southeast. Waves 1 to
3 ft.
.TONIGHT...Southeast winds 10 to 15 kt becoming south 5 to 10 kt.
Waves 1 to 2 ft.
.TUESDAY...South winds 10 to 15 kt. Waves 1 to 2 ft.
.TUESDAY NIGHT...West winds 10 to 20 kt becoming northwest. Waves
1 to 2 ft building to 2 to 4 ft.
.WEDNESDAY...Northwest winds 10 to 20 kt. Waves 3 to 5 ft.
.WEDNESDAY NIGHT...North winds 10 to 20 kt. Waves 3 to 5 ft.
.THURSDAY...Northwest winds 10 to 15 kt becoming west. Waves 2 to
4 ft.
.FRIDAY...Northwest winds to 30 kt becoming north. Waves 7 to
10 ft occasionally to 13 ft.

$$

LMZ761-251530-
MAFOR 2509/
MICHIGAN NORTH 13420 13410 12300. Waves 1 to 3 feet.

MICHIGAN SOUTH 14410 13310 11410. Waves 1 to 3 feet.

$$


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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