Great Lakes Forecast
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FZUS63 KLOT 252010
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Chicago/Romeoville IL
310 PM CDT Sun Jun 25 2017

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 30.3 inches extending from the
northern to the central Plains and lower Ohio Valley will remain
in this position tonight into Monday while weak low pressure of
29.9 inches moves across the northern Great Lakes. A trailing cold
front from the low will move across Lake Michigan tonight. The
surface ridge axis will lift north to the southern portion of the
lake on Tuesday and then shift east, with the center of the high
moving across the Ohio Valley. Low pressure of 29.4 inches will
develop across the northern plains by Tuesday evening and will
track over the northern portion of the lake on Wednesday night or
Thursday morning. The low will weaken north of the Great Lakes
late in the week.

LMZ261-362-364-366-563-565-567-868-260315-
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-
310 PM CDT Sun Jun 25 2017

SHEBOYGAN WI TO PENTWATER MI NORTH...

.TONIGHT...Southwest winds 10 to 20 kt becoming west 15 to 25 kt.
Scattered showers with isolated thunderstorms. Waves 1 to 3 ft
building to 3 to 5 ft occasionally to 7 ft.
.MONDAY...Northwest winds 15 to 25 kt. Showers likely with
scattered thunderstorms. Waves 3 to 5 ft occasionally to 7 ft.
.MONDAY NIGHT...Northwest winds 15 to 25 kt becoming west 10 to
15 kt overnight. Waves 3 to 5 ft subsiding to 1 to 3 ft
overnight.
.TUESDAY...Southwest winds 10 to 20 kt. Waves 1 to 3 ft.
.TUESDAY NIGHT...Southwest winds 15 to 25 kt. Waves 2 to 4 ft.
.WEDNESDAY...South winds to 30 kt. Showers with a chance of
thunderstorms in the afternoon. Waves 4 to 6 ft occasionally to
8 ft building to 6 to 9 ft occasionally to 12 ft in the
afternoon.
.WEDNESDAY NIGHT...South winds to 30 kt. Showers and
thunderstorms. Waves 6 to 9 ft occasionally to 12 ft.
.THURSDAY...Southwest winds 15 to 25 kt becoming west 10 to
20 kt. Chance of showers and thunderstorms. Waves 4 to 6 ft
occasionally to 8 ft subsiding to 3 to 5 ft in the afternoon.
.FRIDAY...Northeast winds 10 to 20 kt. Chance of showers. Waves
1 to 3 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-260315-
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-
310 PM CDT Sun Jun 25 2017

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.TONIGHT...West winds 10 to 20 kt increasing to 15 to 25 kt.
Waves 2 to 4 ft building to 4 to 6 ft occasionally to 8 ft from
late evening on.
.MONDAY...Northwest winds 15 to 25 kt. Isolated showers in the
morning...then isolated showers and thunderstorms in the
afternoon. Waves 4 to 6 ft occasionally to 8 ft.
.MONDAY NIGHT...Northwest winds 15 to 25 kt. Waves 4 to 6 ft
occasionally to 8 ft subsiding to 2 to 4 ft overnight.
.TUESDAY...West winds 10 to 15 kt becoming southwest 10 to 20 kt.
Waves 1 to 3 ft.
.TUESDAY NIGHT...Southwest winds 15 to 25 kt. Waves 2 to 4 ft.
.WEDNESDAY...South winds to 30 kt. Chance of showers and
thunderstorms in the afternoon. Waves 4 to 6 ft occasionally to
8 ft building to 4 to 7 ft occasionally to 9 ft in the afternoon.
.WEDNESDAY NIGHT...Southwest winds to 30 kt. Showers and
thunderstorms likely. Waves 5 to 8 ft occasionally to 10 ft.
.THURSDAY...Southwest winds 15 to 25 kt. Chance of showers and
thunderstorms. Waves 4 to 7 ft occasionally to 9 ft subsiding to
3 to 5 ft in the afternoon.
.FRIDAY...East winds 10 to 20 kt becoming northeast. Chance of
showers and thunderstorms. Waves 1 to 3 ft.

$$

LMZ761-260315-
MAFOR 2521/
MICHIGAN NORTH 11520 12620 11630 13736 11726. Scattered showers
early this evening. Scattered thunderstorms Monday. Waves 1 to 3
ft building to 3 to 5 ft occasionally to 7 ft tonight and Monday.

MICHIGAN SOUTH 13620 13630 12730. Waves 2 to 4 ft building to 4
to 7 ft occasionally to 9 ft tonight. Waves 4 to 7 ft
occasionally to 9 ft Monday.

$$


KMD

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

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



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