Great Lakes Forecast
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099
FZUS63 KLOT 160241
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Chicago/Romeoville IL
841 PM CST Thu Feb 15 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 over southern Quebec will
continue northeast tonight. Another area of low pressure of 29.7
inches over the mid Mississippi Valley will quickly move to New
England tonight. Strong high pressure of 30.6 inches will move
across the Plains tonight and Friday and then across the southern
Great Lakes region Friday night. Low pressure is expected to move
across Hudson Bay Saturday with a weak cold front crossing the
lake Saturday night.

LMZ261-362-364-366-563-565-567-868-161015-
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-
841 PM CST Thu Feb 15 2018

SHEBOYGAN WI TO PENTWATER MI NORTH...

.REST OF TONIGHT...North winds to 30 kt becoming northwest.
Slight chance of snow. Freezing spray overnight. Waves 4 to 7 ft
occasionally to 9 ft building to 6 to 9 ft occasionally to 12 ft.
.FRIDAY...Northwest winds 15 to 25 kt becoming west 10 to 20 kt
in the afternoon. Freezing spray in the morning. Slight chance of
snow in the morning. Waves 5 to 8 ft occasionally to 10 ft
subsiding to 3 to 5 ft.
.FRIDAY NIGHT...West winds 10 to 20 kt becoming southwest to
30 kt. Waves 3 to 5 ft building to 5 to 8 ft occasionally to
10 ft.
.SATURDAY...Southwest gales to 35 kt. Freezing spray in the
morning. Snow likely in the afternoon. Waves 8 to 12 ft
occasionally to 16 ft.
.SATURDAY NIGHT...West winds to 30 kt diminishing to 15 to 25 kt.
Chance of snow in the evening. Waves 6 to 9 ft occasionally to
12 ft subsiding to 4 to 6 ft occasionally to 8 ft.
.SUNDAY...Southwest winds 10 to 20 kt becoming south to 30 kt in
the afternoon. Chance of snow in the afternoon. Waves 2 to 4 ft
building to 4 to 6 ft occasionally to 8 ft.
.SUNDAY NIGHT...South winds to 30 kt becoming east 10 to 20 kt
overnight. Chance of rain and snow showers. Waves 4 to 6 ft
occasionally to 8 ft.
.MONDAY...Northeast winds 10 to 20 kt. Rain and snow showers.
Waves 4 to 6 ft occasionally to 8 ft.
.TUESDAY...North winds 10 to 20 kt. Chance of snow and rain
showers. Waves 3 to 5 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-161015-
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-
841 PM CST Thu Feb 15 2018

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.REST OF TONIGHT...North winds 15 to 25 kt increasing to 30 kt.
Slight chance of snow. Waves 3 to 5 ft building to 7 to 10 ft
occasionally to 13 ft.
.FRIDAY...Northwest winds to 30 kt diminishing to 10 to 20 kt
early in the afternoon...then becoming west late. Freezing spray
in the morning. Slight chance of snow in the morning. Waves 7 to
10 ft occasionally to 13 ft subsiding to 4 to 7 ft occasionally
to 9 ft.
.FRIDAY NIGHT...West winds 10 to 15 kt becoming southwest 10 to
20 kt...then increasing to 15 to 25 kt late. Waves 3 to 5 ft
building to 4 to 6 ft occasionally to 8 ft.
.SATURDAY...South winds to 30 kt becoming southwest. Snow likely
in the afternoon. Waves 5 to 8 ft occasionally to 10 ft.
.SATURDAY NIGHT...West winds to 30 kt diminishing to 15 to 25 kt.
Chance of snow in the evening. Waves 4 to 7 ft occasionally to
9 ft subsiding to 4 to 6 ft occasionally to 8 ft.
.SUNDAY...Southwest winds 10 to 20 kt becoming south to 30 kt in
the afternoon. Waves 2 to 4 ft building to 4 to 6 ft occasionally
to 8 ft.
.SUNDAY NIGHT...South winds to 30 kt diminishing to 15 to 25 kt.
Chance of rain showers. Waves 4 to 6 ft occasionally to 8 ft.
.MONDAY...Southeast winds 10 to 20 kt becoming south to 30 kt in
the afternoon. Rain showers. Waves 3 to 5 ft.
.TUESDAY...West winds 10 to 20 kt becoming northwest 15 to 25 kt.
Chance of rain showers. Waves 2 to 4 ft.

$$
LMZ761-161015-
MAFOR 1604/
MICHIGAN NORTH 11840 12740 12730 12620 11520. Waves 4 to 7 ft
occasionally to 9 ft building to 6 to 9 ft occasionally to 12 ft
overnight. Waves 5 to 8 ft occasionally to 10 ft subsiding to 3
to 5 ft Friday. Waves 3 to 5 ft building to 4 to 6 ft
occasionally to 8 ft Friday evening.

MICHIGAN SOUTH 11830 12840 11740 11730 11720 12610. Waves 3 to 5
ft building to 7 to 10 ft occasionally to 13 ft overnight. Waves 7
to 10 ft occasionally to 13 ft subsiding to 4 to 7 ft
occasionally to 9 ft Friday. Waves 4 to 6 ft occasionally to 8 ft
Friday evening.

$$


KJB

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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