Great Lakes Forecast
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FZUS63 KMKX 031944
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Milwaukee/Sullivan WI
244 PM CDT Mon Aug 3 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...

Lake Michigan will remain in a north to northeasterly wind regime
through Tuesday due to high pressure of 30.3 inches over southern
Canada and weak low pressure of 29.9 inches over the eastern Great
Lakes. A tighter pressure gradient between these two features
will cause gusty winds and higher waves late today and tonight
with the potential for gusts up to 30 knots. The winds and
resultant wave heights will gradually decrease as the high
pressure ridge edges closer on Tuesday.

&&

LMZ261-362-364-366-563-565-567-868-040315-
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-
244 PM CDT Mon Aug 3 2020

SHEBOYGAN WI TO PENTWATER MI NORTH...

.TONIGHT...North winds 15 to 25 kt diminishing to 10 to 20 kt.
Slight chance of showers overnight. Waves 4 to 7 ft occasionally
to 9 ft subsiding to 3 to 5 ft.
.TUESDAY...North winds 10 to 20 kt. Waves 3 to 5 ft.
.TUESDAY NIGHT...North winds 10 to 20 kt becoming northwest 10 to
15 kt. Waves 2 to 4 ft subsiding to 1 to 2 ft.
.WEDNESDAY...Northwest winds 10 to 15 kt becoming southwest 10 to
20 kt. Waves 1 to 2 ft.
.WEDNESDAY NIGHT...Southwest winds 10 to 15 kt. Waves 1 to 2 ft.
.THURSDAY...Southwest winds 10 to 15 kt. Waves 1 to 3 ft.
.THURSDAY NIGHT...Southwest winds 10 to 15 kt becoming south 5 to
10 kt. Waves 1 to 3 ft.
.FRIDAY...South winds 10 to 15 kt becoming southwest 10 to 20 kt.
Waves 1 to 3 ft.
.SATURDAY...South winds 10 to 20 kt. Waves 1 to 3 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-040315-
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-
244 PM CDT Mon Aug 3 2020

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.TONIGHT...North winds to 30 kt diminishing to 10 to 20 kt.
Slight chance of showers. Waves 6 to 9 ft occasionally to 12 ft
subsiding to 4 to 6 ft occasionally to 8 ft.
.TUESDAY...North winds 10 to 20 kt. Waves 4 to 6 ft occasionally
to 8 ft.
.TUESDAY NIGHT...North winds 10 to 20 kt becoming northwest 5 to
10 kt. Waves 3 to 5 ft subsiding to 2 to 4 ft.
.WEDNESDAY...Northwest winds 10 to 15 kt becoming southwest.
Waves 1 to 3 ft.
.WEDNESDAY NIGHT...South winds 5 to 10 kt. Waves 1 to 2 ft.
.THURSDAY...Southwest winds 5 to 10 kt becoming south 10 to
15 kt. Waves 1 to 3 ft.
.THURSDAY NIGHT...Southeast winds 10 to 15 kt becoming south 5 to
10 kt. Waves 1 to 3 ft.
.FRIDAY...South winds 10 to 15 kt increasing to 10 to 20 kt.
Waves 1 to 3 ft.
.SATURDAY...South winds 10 to 20 kt. Waves 2 to 4 ft.

$$

LMZ761-040315-
MAFOR 0321/
MICHIGAN NORTH 12830 15820. Waves 5 to 8 feet subsiding to 2 to 4
feet tonight. Waves 2 to 4 feet Tuesday.

MICHIGAN SOUTH 11830 11840 11130 11120 13830 11820. Scattered
showers early this evening. Waves 6 to 9 feet subsiding to 3 to 6
feet tonight. Waves 3 to 5 feet Tuesday.

$$
MBK

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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