Great Lakes Forecast
Issued by NWS

Home | Current Version | Previous Version | Graphics & Text | Print | Product List | Glossary Off
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30

000
FZUS63 KLOT 091433
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Chicago/Romeoville IL
833 AM CST Tue Jan 9 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...A ridge of high pressure averaging 30.3 inches will
pass eastward towards the eastern lakes this afternoon. Low
pressure of 29.4 inches will develop over the far northern High
Plains late tonight and will track to James Bay by Wednesday
evening. Another low of 29.5 inches will move from the central
Plains on Wednesday night to Lake Superior by Thursday morning and
to western Quebec by Thursday night. An associated cold front
trailing from this low will move across the lake Thursday
afternoon. High pressure of 30.8 inches will build into the Upper
Midwest Saturday and to the Great Lakes region on Sunday.

LMZ261-362-364-366-563-565-567-868-092230-
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-
833 AM CST Tue Jan 9 2018

SHEBOYGAN WI TO PENTWATER MI NORTH...

.REST OF TODAY...Variable winds 5 to 10 kt becoming south 10 to
15 kt this afternoon. Winds increasing to 10 to 20 kt late this
afternoon. Waves 1 to 3 ft building to 2 to 4 ft late.
.TONIGHT...South winds 15 to 25 kt increasing to 30 kt after
midnight. Areas of fog and occasional drizzle overnight. Waves 3
to 5 ft building to 6 to 9 ft occasionally to 11 ft.
.WEDNESDAY...South winds to 30 kt. Occasional gale force gusts
through early afternoon. Areas of fog and occasional drizzle. A
chance of rain in the morning. Waves 8 to 11 ft occasionally to
14 ft.
.WEDNESDAY NIGHT...South winds to 30 kt. Areas of fog. Occasional
drizzle with a chance of rain showers. Waves 6 to 9 ft
occasionally to 12 ft.
.THURSDAY...Southwest winds to 30 kt becoming northwest late.
Rain showers. Waves 7 to 10 ft occasionally to 13 ft.
.THURSDAY NIGHT...North gales to 35 kt. Snow showers likely.
Waves 5 to 8 ft occasionally to 10 ft.
.FRIDAY...North winds to 30 kt. Freezing spray. Waves 6 to 9 ft
occasionally to 12 ft.
.SATURDAY...North winds to 30 kt. Freezing spray. Chance of snow
showers. Waves 7 to 10 ft occasionally to 13 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-092230-
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-
833 AM CST Tue Jan 9 2018

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.REST OF TODAY...South winds 5 to 10 kt increasing to 10 to 20 kt
this afternoon. Patchy fog this morning. Waves 1 to 3 ft building
to 2 to 4 ft late this afternoon.
.TONIGHT...South winds 15 to 25 kt increasing to 30 kt after
midnight. Areas of fog and occasional drizzle overnight, with a
chance of light rain. Waves 3 to 5 ft building to 5 to 8 ft
occasionally to 10 ft.
.WEDNESDAY...South winds to 30 kt. Areas of fog. Occasional
drizzle. A chance of rain in the morning. Waves 6 to 9 ft
occasionally to 12 ft.
.WEDNESDAY NIGHT...South winds to 30 kt. Areas of fog. Occasional
drizzle with a chance of rain showers. Waves 5 to 8 ft
occasionally to 10 ft.
.THURSDAY...South winds to 30 kt becoming southwest 15 to 25 kt.
Rain showers likely. Waves 7 to 10 ft occasionally to 13 ft.
.THURSDAY NIGHT...Northwest winds to 30 kt increasing to gales to
35 kt then becoming north. Snow and rain showers likely. Waves 4
to 7 ft occasionally to 9 ft building to 6 to 9 ft occasionally
to 12 ft.
.FRIDAY...North gales to 35 kt becoming northeast to 30 kt then
increasing to gales again Friday night. Waves 7 to 10 ft
occasionally to 13 ft.
.SATURDAY...North gales to 35 kt diminishing to 30 kt. Freezing
spray. Chance of snow showers. Waves 10 to 14 ft occasionally to
18 ft.

$$
LMZ761-092230-
MAFOR 0916/
MICHIGAN NORTH 11900 11410 11420 11430 13443 11445. Chance of
light freezing drizzle Wednesday morning. Waves 1 to 3 ft building
to 2 to 4 ft today. Waves 3 to 5 feet building to 6 to 9 feet
occasionally to 12 feet tonight. Waves 8 to 11 feet occasionally
to 14 feet Wednesday morning.

MICHIGAN SOUTH 11400 11410 11420 11430 11433 12445 11443. Waves 1
to 3 ft building to 2 to 4 ft today. Waves 3 to 5 feet building
to 5 to 8 feet occasionally to 10 feet tonight. Waves 6 to 9 feet
occasionally to 12 feet Wednesday morning.

$$

KJB

Experimental modernized open lake forecast is available online at
weather.gov/lot/glftable

Graphical marine forecasts are available online at:
weather.gov/greatlakes



USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.