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 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50
000
FZUS63 KMKX 171956
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Milwaukee/Sullivan WI
256 PM CDT Wed Jul 17 2019

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...

High pressure of 30.1 inches over Ontario will give way to low
pressure around 29.6 inches on Thursday. Warm and humid air over
Lake Michigan is causing areas of dense fog to linger across the
south half of Lake Michigan through the evening. Look for
increasing southerly winds Thursday and Friday. Several rounds of
thunderstorms are expected to roll across Lake Michigan,
especially the north half, tonight through the weekend.

LMZ261-362-364-366-563-565-567-868-180330-
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-
256 PM CDT Wed Jul 17 2019

SHEBOYGAN WI TO PENTWATER MI NORTH...

.TONIGHT...Northeast winds 10 to 15 kt becoming southeast 10 to
20 kt late this evening, then increasing to 15 to 25 kt after
midnight. Chance of showers and thunderstorms overnight. Waves 2
to 4 ft.
.THURSDAY...South winds 15 to 25 kt becoming southwest. Chance of
showers and thunderstorms. Waves 3 to 5 ft.
.THURSDAY NIGHT...Southwest winds 15 to 25 kt diminishing to
10 to 20 kt. Chance of showers and thunderstorms. Waves 3 to 5 ft
subsiding to 2 to 4 ft.
.FRIDAY...Southwest winds 10 to 20 kt. Waves 2 to 4 ft.
.FRIDAY NIGHT...Southwest winds 10 to 20 kt becoming west. Chance
of showers and thunderstorms. Waves 2 to 4 ft.
.SATURDAY...Northwest winds 5 to 10 kt becoming north 10 to
15 kt. Waves 1 to 3 ft subsiding to 1 to 2 ft.
.SATURDAY NIGHT...Northeast winds 10 to 15 kt. Chance of showers
and thunderstorms. Waves 1 ft or less.
.SUNDAY...Northeast winds 10 to 15 kt increasing to 10 to 20 kt.
Chance of showers and thunderstorms. Waves 1 ft or less.
.MONDAY...North winds 10 to 15 kt increasing to 10 to 20 kt.
Waves 1 to 2 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-180330-
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-
256 PM CDT Wed Jul 17 2019

SHEBOYGAN WI TO PENTWATER MI SOUTH...

...DENSE FOG ADVISORY IN EFFECT UNTIL 10 PM CDT THIS EVENING...

.TONIGHT...Northeast winds 5 to 10 kt becoming southeast late
this evening, then increasing to 10 to 20 kt after midnight and
becoming south 15 to 25 kt late. Areas of dense fog this evening.
Chance of showers and thunderstorms overnight. Waves 1 to 2 ft
building to 2 to 4 ft.
.THURSDAY...South winds 15 to 25 kt. Thunderstorms likely with a
chance of showers in the morning, then slight chance of showers
and thunderstorms in the afternoon. Waves 3 to 5 ft.
.THURSDAY NIGHT...Southwest winds 10 to 20 kt increasing to 15 to
25 kt. Chance of showers and thunderstorms in the evening. Waves
3 to 5 ft subsiding to 2 to 4 ft.
.FRIDAY...Southwest winds 10 to 20 kt increasing to 15 to 25 kt.
Waves 3 to 5 ft.
.FRIDAY NIGHT...Southwest winds 15 to 25 kt diminishing to 10 to
20 kt. Waves 3 to 5 ft.
.SATURDAY...West winds 10 to 15 kt becoming north 10 to 20 kt.
Waves 1 to 3 ft.
.SATURDAY NIGHT...Northeast winds 10 to 15 kt. Chance of showers
and thunderstorms. Waves 1 to 2 ft.
.SUNDAY...East winds 10 to 15 kt becoming northeast 10 to 20 kt.
Chance of showers and thunderstorms. Waves 1 to 2 ft.
.MONDAY...North winds 10 to 20 kt increasing to 15 to 25 kt.
Waves 1 to 3 ft building to 2 to 4 ft.

$$

LMZ761-180330-
MAFOR 1721/
MICHIGAN NORTH 11110 11210 11320 14430 11430. Chance of showers
and thunderstorms overnight and Thursday. Waves 2 to 4 ft
tonight. Waves 3 to 5 ft building to 4 to 6 ft occasionally to 8
ft Thursday.

MICHIGAN SOUTH 11114 11204 11310 11320 11430 11439 12430. Chance
of showers and thunderstorms overnight. Chance of showers Thursday
morning. Waves 2 to 4 ft tonight. Waves 3 to 5 ft building to 4
to 6 ft occasionally to 8 ft Thursday.

$$


Cronce

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