Great Lakes Forecast
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000
FZUS63 KLOT 250845
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Chicago/Romeoville IL
245 AM CST Sun Feb 25 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 29.4 inches is over northern Wisconsin
early this morning with a cold front pushing across Lake Michigan.
The low will lift to James Bay this evening deepening to 29.1
inches. Meanwhile, high pressure of 30.1 inches is over the
Southern Plains this morning. The high will move to the Ohio
Valley tonight then to the mid Atlantic Coast Tuesday. Low
pressure of 29.5 inches will move from Saskatchewan Sunday night
to James Bay Tuesday. Low pressure of 29.7 inches will develop
over the Southern Plains Tuesday night and lift to northern
Indiana Thursday deepening to 29.5 inches.

LMZ261-362-364-366-563-565-567-868-251630-
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-
245 AM CST Sun Feb 25 2018

SHEBOYGAN WI TO PENTWATER MI NORTH...

...GALE WARNING IN EFFECT THROUGH THIS EVENING...

.TODAY...Southwest gales to 45 kt diminishing to gales to 40 kt. A
few storm force gusts to 50 kt possible this morning. Showers
early this morning. Waves 10 to 14 ft occasionally to 18 ft.
.TONIGHT...Southwest gales to 35 kt becoming west to 30...then
diminishing to 15 to 25 kt late. Waves 8 to 11 ft occasionally to
14 ft subsiding to 4 to 6 ft occasionally to 8 ft.
.MONDAY...West winds 10 to 20 kt becoming southwest. Waves 3 to
5 ft subsiding to 2 to 4 ft.
.MONDAY NIGHT...South winds 15 to 25 kt becoming southwest to
30 kt. Waves 4 to 7 ft occasionally to 9 ft.
.TUESDAY...Southwest winds to 30 kt diminishing to 10 to 20 kt in
the afternoon. Waves 4 to 7 ft occasionally to 9 ft subsiding to
4 to 6 ft occasionally to 8 ft.
.TUESDAY NIGHT...South winds 10 to 20 kt backing to northeast
10 to 15 kt. Chance of rain and snow. Waves 2 to 4 ft subsiding
to 1 to 3 ft.
.WEDNESDAY...Northeast winds 10 to 20 kt. Waves 1 to 3 ft.
.THURSDAY...Northeast gales to 35 kt increasing to gales to
40 kt. Chance of rain. Waves 6 to 9 ft occasionally to 12 ft
building to 8 to 12 ft occasionally to 16 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-251630-
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-
245 AM CST Sun Feb 25 2018

SHEBOYGAN WI TO PENTWATER MI SOUTH...

...GALE WARNING IN EFFECT THROUGH THIS AFTERNOON...

.TODAY...Southwest gales to 45 kt diminishing to 30 kt. Waves 8
to 11 ft occasionally to 14 ft subsiding to 6 to 9 ft occasionally
to 12 ft.
.TONIGHT...Southwest winds to 30 kt becoming west 10 to 20 kt.
Waves 6 to 9 ft occasionally to 12 ft subsiding to 3 to 5 ft.
.MONDAY...Southwest winds 10 to 20 kt becoming south. Waves 2 to
4 ft subsiding to 1 to 3 ft.
.MONDAY NIGHT...South winds 10 to 20 kt becoming southwest 15 to
25 kt. Waves 2 to 4 ft building to 3 to 5 ft.
.TUESDAY...Southwest winds 15 to 25 kt becoming south 10 to
20 kt. Waves 4 to 6 ft occasionally to 8 ft.
.TUESDAY NIGHT...South winds 10 to 20 kt becoming southwest.
Chance of rain. Waves 2 to 4 ft.
.WEDNESDAY...Northwest winds 10 to 20 kt veering to northeast
10 to 15 kt. Waves 1 to 3 ft.
.THURSDAY...East gales to 35 kt becoming northeast. Rain. Waves
7 to 10 ft occasionally to 13 ft building to 8 to 12 ft
occasionally to 16 ft.

$$

LMZ761-251630-
MAFOR 2510/
MICHIGAN NORTH...Gale Warning in effect...10440 12566 19577 12560
12550 12640. Waves 10 to 14 ft occasionally to 18 ft today. Waves
8 to 11 ft occasionally to 14 ft subsiding to 4 to 6 ft
occasionally to 8 ft tonight.

MICHIGAN SOUTH...Gale Warning in effect...12560 12550 13540 11630.
Waves 8 to 11 ft occasionally to 14 ft subsiding to 6 to 9 ft
occasionally to 12 ft today. Waves 6 to 9 ft occasionally to 12
ft subsiding to 3 to 5 ft 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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