Great Lakes Forecast
Issued by NWS

Home | Current Version | Previous Version | Text Only | Print | Product List | Glossary On
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 152055
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Chicago/Romeoville IL
255 PM CST Mon Jan 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 30.1 inches over southeast Wisconsin
will move across the southern part of the lake tonight. The low
will continue to Lake Huron later on Tuesday, filling slightly to
30.2 inches. Another strong high pressure of 30.9 inches will push
south across the Plains, weakening to 30.7 inches as it reaches
the lower Missouri Valley by Wednesday morning. The high will
weaken further to 30.4 inches over the southeast USA late week.

LMZ261-362-364-366-563-565-567-868-160415-
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-
255 PM CST Mon Jan 15 2018

SHEBOYGAN WI TO PENTWATER MI NORTH...

.TONIGHT...East winds to 30 kt becoming northeast. Snow showers
likely this evening...then chance of snow showers overnight.
Waves 4 to 7 ft occasionally to 9 ft.
.TUESDAY...Northeast winds 15 to 25 kt becoming north. Chance of
snow showers in the morning...then slight chance of snow showers
in the afternoon. Waves 5 to 8 ft occasionally to 10 ft subsiding
to 4 to 6 ft occasionally to 8 ft.
.TUESDAY NIGHT...Northwest winds 15 to 25 kt becoming west to
30 kt. Waves 3 to 5 ft subsiding to 2 to 4 ft.
.WEDNESDAY...West winds to 30 kt becoming southwest gales to
40 kt in the afternoon. Freezing spray in the morning. Waves 4 to
7 ft occasionally to 9 ft building to 7 to 10 ft occasionally to
13 ft.
.WEDNESDAY NIGHT...Southwest gales to 40 kt becoming west gales
to 35 kt. Freezing spray overnight. Waves 7 to 10 ft occasionally
to 13 ft.
.THURSDAY...Southwest winds to 30 kt. Waves 5 to 8 ft
occasionally to 10 ft subsiding to 4 to 6 ft occasionally to
8 ft.
.THURSDAY NIGHT...West winds to 30 kt becoming southwest 10 to
20 kt overnight. Waves 3 to 5 ft.
.FRIDAY...Southwest winds 15 to 25 kt increasing to 30 kt. Waves
4 to 6 ft occasionally to 8 ft building to 5 to 8 ft occasionally
to 10 ft.
.SATURDAY...Southwest winds to 30 kt diminishing to 15 to 25 kt.
Waves 5 to 8 ft occasionally to 10 ft subsiding to 4 to 6 ft
occasionally to 8 ft.

$$

LMZ669-671-673-675-870-872-874-876-160415-
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 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-
255 PM CST Mon Jan 15 2018

SHEBOYGAN WI TO PENTWATER MI SOUTH TO WINTHROP HARBOR IL TO SOUTH
HAVEN MI...

.TONIGHT...Northeast winds 10 to 20 kt. Snow showers this
evening...then snow showers likely overnight. Waves 3 to 5 ft.
.TUESDAY...North winds 15 to 25 kt. Snow showers likely in the
morning...then chance of snow showers in the afternoon. Waves
4 to 7 ft occasionally to 9 ft.
.TUESDAY NIGHT...North winds 15 to 25 kt becoming northwest. Snow
showers likely in the evening...then chance of snow showers
overnight. Waves 4 to 7 ft occasionally to 9 ft subsiding to 4 to
6 ft occasionally to 8 ft.
.WEDNESDAY...West winds to 30 kt. Waves 3 to 5 ft building to
4 to 7 ft occasionally to 9 ft.
.WEDNESDAY NIGHT...West gales to 35 kt. Freezing spray. Waves
6 to 9 ft occasionally to 12 ft.
.THURSDAY...Southwest winds to 30 kt. Freezing spray in the
morning. Waves 6 to 9 ft occasionally to 12 ft.
.THURSDAY NIGHT...Southwest winds to 30 kt diminishing to 15 to
25 kt. Waves 4 to 6 ft occasionally to 8 ft.
.FRIDAY...Southwest winds 15 to 25 kt increasing to 30 kt. Waves
3 to 5 ft building to 4 to 7 ft occasionally to 9 ft.
.SATURDAY...Southwest winds to 30 kt diminishing to 15 to 25 kt.
Waves 4 to 7 ft occasionally to 9 ft subsiding to 4 to 6 ft
occasionally to 8 ft.

$$

LMZ080-777-779-878-160415-
Lake Michigan from Michigan City IN to St. Joseph MI 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 St. Joseph to South Haven MI 5 NM offshore to
Mid Lake-
255 PM CST Mon Jan 15 2018

WINTHROP HARBOR IL TO SOUTH HAVEN MI SOUTH...

.TONIGHT...West winds 15 to 25 kt becoming northwest 10 to 20 kt.
Snow showers. Waves 4 to 6 ft occasionally to 8 ft subsiding to
3 to 5 ft.
.TUESDAY...Northwest winds 10 to 20 kt becoming north 15 to
25 kt. Snow showers. Waves 2 to 4 ft building to 4 to 7 ft
occasionally to 9 ft.
.TUESDAY NIGHT...North winds 15 to 25 kt becoming northwest. Snow
showers likely in the evening...then chance of snow showers
overnight. Waves 4 to 7 ft occasionally to 9 ft subsiding to 4 to
6 ft occasionally to 8 ft.
.WEDNESDAY...West winds 15 to 25 kt increasing to 30 kt. Waves
3 to 5 ft building to 4 to 7 ft occasionally to 9 ft.
.WEDNESDAY NIGHT...Southwest gales to 35 kt. Freezing spray.
Waves 5 to 8 ft occasionally to 10 ft.
.THURSDAY...Southwest winds to 30 kt. Freezing spray in the
morning. Waves 5 to 8 ft occasionally to 10 ft subsiding to 4 to
7 ft occasionally to 9 ft.
.THURSDAY NIGHT...Southwest winds to 30 kt diminishing to 15 to
25 kt. Waves 4 to 6 ft occasionally to 8 ft.
.FRIDAY...Southwest winds 15 to 25 kt increasing to 30 kt. Waves
3 to 5 ft building to 4 to 7 ft occasionally to 9 ft.
.SATURDAY...Southwest winds to 30 kt diminishing to 15 to 25 kt.
Waves 4 to 6 ft occasionally to 8 ft.

$$

LMZ761-160415-
MAFOR 1522/
MICHIGAN NORTH 11237 11247 11147 11137 12130 12830. Chance of
snow showers Tuesday morning. Waves 4 to 7 feet occasionally to 9
feet building to 5 to 8 feet occasionally to 10 feet by
morning...then subsiding to 4 to 6 feet occasionally to 8 feet
Tuesday.

MICHIGAN SOUTH 11237 11137 11837 11827 14837. Waves 4 to 6 feet
occasionally to 8 feet subsiding to 3 to 5 feet tonight...then
building to 4 to 7 feet occasionally to 9 feet Tuesday.

$$

Lenning

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.