Great Lakes Forecast
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FZUS63 KMKX 250146
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Milwaukee/Sullivan WI
846 PM CDT Sun May 24 2020

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 broad region of weak low pressure around 29.7 inches will
remain near or over the region for much of this week. This will
result steady southerly winds, as well as periodic chances for
showers and storms Monday through Thursday. Waves will vary
between 1 and 4 feet for much of the week.

With an increase in warmth and low level moisture, dense fog will
remain a concern. Fog is currently the most dense across the
northern portion of Lake Michigan. Fog may eventually expand to
the south late tonight, and if so, the Dense Fog Advisory may need
to be extended.

&&

LMZ261-362-364-366-563-565-567-868-250930-
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-
846 PM CDT Sun May 24 2020

SHEBOYGAN WI TO PENTWATER MI NORTH...

...DENSE FOG ADVISORY IN EFFECT UNTIL 10 AM CDT MONDAY...

.REST OF TONIGHT...South winds 10 to 15 kt becoming southeast.
Areas of dense fog through early evening, then widespread dense
fog overnight. Slight chance of showers and thunderstorms
overnight. Waves 1 to 2 ft.
.MONDAY...Southeast winds 5 to 10 kt becoming south 10 to 15 kt
late in the morning, then increasing to 10 to 20 kt early in the
afternoon becoming south 10 to 20 kt late. Patchy dense fog in
the morning, then patchy fog in the afternoon. Slight chance of
showers and thunderstorms in the afternoon. Waves 2 to 4 ft.
.MONDAY NIGHT...South winds 10 to 20 kt diminishing to 10 to
15 kt. Chance of showers and thunderstorms in the evening. Patchy
fog in the evening, then patchy dense fog overnight. Waves 2 to
4 ft subsiding to 1 to 3 ft.
.TUESDAY...South winds 10 to 20 kt. Chance of showers and
thunderstorms in the afternoon. Waves 1 to 3 ft building to 2 to
4 ft.
.TUESDAY NIGHT...Southwest winds 10 to 20 kt diminishing to 10 to
15 kt. Chance of showers and thunderstorms in the evening, then
showers likely with a chance of thunderstorms overnight. Waves
2 to 4 ft.
.WEDNESDAY...Southwest winds 10 to 15 kt increasing to 10 to
20 kt. Showers likely with a chance of thunderstorms. Waves 1 to
3 ft.
.WEDNESDAY NIGHT...Southwest winds 10 to 15 kt diminishing to
5 to 10 kt. Chance of showers and thunderstorms. Waves 1 to 3 ft.
.THURSDAY...Southwest winds 5 to 10 kt becoming west 10 to 15 kt.
Waves 1 to 2 ft.
.FRIDAY...North winds 10 to 20 kt. Waves 1 to 3 ft.

$$

LMZ080-671-673-675-777-779-872-874-876-878-250930-
Lake Michigan from Michigan City IN to St. Joseph MI 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 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-
846 PM CDT Sun May 24 2020

PORT WASHINGTON WI TO WHITEHALL MI SOUTH...

.REST OF TONIGHT...Southeast winds 10 to 15 kt becoming south
5 to 10 kt. Patchy dense fog through early evening, then patchy
fog overnight. Waves 1 to 2 ft.
.MONDAY...South winds 10 to 15 kt increasing to 10 to 20 kt.
Patchy fog. Chance of showers and slight chance of thunderstorms
in the morning, then slight chance of showers and thunderstorms
in the afternoon. Waves 2 to 4 ft.
.MONDAY NIGHT...South winds 10 to 20 kt diminishing to 5 to
10 kt. Waves 2 to 4 ft subsiding to 1 to 3 ft.
.TUESDAY...South winds 10 to 20 kt. Chance of showers and
thunderstorms in the afternoon. Waves 2 to 4 ft.
.TUESDAY NIGHT...South winds 10 to 20 kt diminishing to 10 to
15 kt. Chance of showers and thunderstorms. Waves 2 to 4 ft
subsiding to 1 to 3 ft.
.WEDNESDAY...South winds 10 to 15 kt. Chance of showers and
thunderstorms in the morning, then showers likely with a chance
of thunderstorms in the afternoon. Waves 1 to 3 ft.
.WEDNESDAY NIGHT...South winds 10 to 15 kt becoming southwest
5 to 10 kt. Chance of showers and thunderstorms. Waves 1 to 3 ft.
.THURSDAY...Southwest winds 10 to 15 kt becoming west. Chance of
showers and thunderstorms. Waves 1 to 3 ft.
.FRIDAY...North winds 10 to 20 kt. Waves 3 to 5 ft.

$$

LMZ669-870-250930-
Lake Michigan from Sheboygan to Port Washington WI 5 NM offshore
to Mid Lake-
Lake Michigan from Whitehall to Pentwater MI 5 NM offshore to Mid
Lake-
846 PM CDT Sun May 24 2020

SHEBOYGAN WI TO PENTWATER MI SOUTH TO PORT WASHINGTON WI TO
WHITEHALL MI...

...DENSE FOG ADVISORY IN EFFECT UNTIL 10 AM CDT MONDAY...

.REST OF TONIGHT...Southeast winds 5 to 10 kt becoming south.
Patchy dense fog. Waves 1 to 2 ft.
.MONDAY...South winds 10 to 15 kt increasing to 10 to 20 kt.
Areas of dense fog in the morning, then patchy fog in the
afternoon. Slight chance of showers and thunderstorms. Waves 2 to
4 ft.
.MONDAY NIGHT...South winds 10 to 20 kt diminishing to 5 to
10 kt. Waves 2 to 4 ft subsiding to 1 to 3 ft.
.TUESDAY...South winds 10 to 20 kt. Waves 2 to 4 ft.
.TUESDAY NIGHT...South winds 10 to 20 kt diminishing to 10 to
15 kt. Chance of showers and thunderstorms. Waves 2 to 4 ft.
.WEDNESDAY...South winds 10 to 15 kt. Showers likely with a
chance of thunderstorms. Waves 1 to 3 ft.
.WEDNESDAY NIGHT...South winds 10 to 15 kt becoming southwest
5 to 10 kt. Chance of showers and thunderstorms. Waves 1 to 3 ft.
.THURSDAY...Southwest winds 10 to 15 kt becoming west. Waves 1 to
2 ft.
.FRIDAY...North winds 10 to 20 kt. Waves 2 to 4 ft.

$$

LMZ761-250930-
MAFOR 2503/
MICHIGAN NORTH 11404 12304 11314 11410 13420. Chance of showers
and thunderstorms Monday evening. Waves 1 foot or less overnight.
Waves 1 to 3 feet building to 2 to 4 feet Monday. Waves 2 to 4
feet subsiding to 1 to 3 feet Monday evening.

MICHIGAN SOUTH 12414 12410 14420. Chance of showers Monday
morning. Waves 2 feet or less overnight. Waves 1 to 3 feet
building to 2 to 4 feet Monday. Waves 2 to 4 feet subsiding to 1
to 3 feet Monday evening.

$$


Boxell

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

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



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