Great Lakes Forecast
Issued by NWS

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FZUS63 KLOT 140832
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Chicago/Romeoville IL
232 AM CST Wed Feb 14 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 central Canada will
move across Lake Superior tonight and into Quebec Thursday
afternoon. A trailing cold front from this low will move across
the lake Thursday. New low pressure of 29.6 inches will develop
along this front over Missouri Thursday morning and quickly move
to New England Thursday night. Strong high pressure of 30.6 inches
will move across the Plains Thursday night and Friday and then
across the southern Great Lakes region Friday night. Low pressure
is expected to move across northern Ontario Saturday with a weak
cold front crossing the lake Saturday night.

LMZ261-362-364-366-563-565-567-868-141500-
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-
232 AM CST Wed Feb 14 2018

SHEBOYGAN WI TO PENTWATER MI NORTH...

.TODAY...Southwest winds to 30 kt. Waves 5 to 8 ft occasionally
to 10 ft.
.TONIGHT...Southwest winds to 30 kt. Slight chance of snow with
patchy drizzle overnight. Waves 5 to 8 ft occasionally to 10 ft.
.THURSDAY...Southwest winds 15 to 25 kt becoming northwest 10 to
20 kt. Waves 4 to 6 ft occasionally to 8 ft subsiding to 3 to 5
ft.
.THURSDAY NIGHT...North winds 15 to 25 kt becoming northwest to
30 kt. Chance of snow. Waves building to 4 to 7 ft occasionally
to 9 ft.
.FRIDAY...Northwest winds 15 to 25 kt becoming west 10 to 20 kt.
Chance of snow in the morning. Waves 4 to 7 ft occasionally to
9 ft.
.FRIDAY NIGHT...West winds 10 to 20 kt becoming southwest. Waves
3 to 5 ft.
.SATURDAY...Southwest winds to 30 kt. Chance of snow. Freezing
Spray. Waves 5 to 8 ft occasionally to 10 ft.
.SUNDAY...West winds 10 to 20 kt becoming south to 30 kt in the
afternoon. Waves 3 to 5 ft building to 5 to 8 ft occasionally
to 10 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-141500-
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-
232 AM CST Wed Feb 14 2018

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.TODAY...Southwest winds to 30 kt becoming south. Waves 4 to 7 ft
occasionally to 9 ft.
.TONIGHT...Southwest winds to 30 kt. Patchy drizzle. Areas of fog
overnight. Waves 4 to 7 ft occasionally to 9 ft.
.THURSDAY...Southwest winds 15 to 25 kt diminishing to 10 to 20
kt late in the morning...then becoming northwest 10 to 15 kt late.
Areas of fog in the morning. Chance of rain in the afternoon.
Waves 4 to 6 ft occasionally to 8 ft subsiding to 2 to 4 ft.
.THURSDAY NIGHT...Northwest winds 10 to 20 kt increasing to 30 kt
overnight. Waves 2 to 4 ft building to 5 to 8 ft occasionally to
10 ft.
.FRIDAY...Northwest winds to 30 kt diminishing to 15 to 25 kt.
Freezing spray in the morning. Chance of snow in the morning.
Waves 5 to 8 ft occasionally to 10 ft.
.FRIDAY NIGHT...West winds 10 to 15 kt becoming southwest 10 to
20 kt. Waves 3 to 5 ft subsiding to 2 to 4 ft.
.SATURDAY...South winds 15 to 25 kt becoming southwest. Chance of
snow. Waves 4 to 6 ft occasionally to 8 ft.
.SUNDAY...West winds 10 to 20 kt becoming south to 30 kt in the
afternoon. Waves 3 to 5 ft building to 4 to 7 ft occasionally to
9 ft.

$$

LMZ761-141500-
MAFOR 1410/
MICHIGAN NORTH 16540. Waves 5 to 8 ft occasionally to 10 ft.

MICHIGAN SOUTH 13540 12440 12540 11543. Patchy drizzle tonight.
Waves 4 to 7 ft occasionally to 9 ft.

$$

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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