Great Lakes Forecast
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000
FZUS63 KLOT 140810
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Chicago/Romeoville IL
310 AM CDT Sat Oct 14 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...Low pressure of 29.9 inches was over eastern Kansas
early this morning with a frontal trough extending to far southern
Lake Michigan. The low will deepen to 29.7 inches as it lifts
across Iowa Saturday and to central Lake Michigan late this
evening. The low will continue to deepen to 29.4 inches as it
lifts into southern Quebec Sunday. High pressure of 30.4 inches
will build across the Great Plains Sunday...then shift to the mid
Atlantic Coast Tuesday into Wednesday where it will remain through
Friday.

LMZ261-362-364-366-563-565-567-669-868-870-141530-
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 Sheboygan to Port Washington WI 5 NM offshore
to Mid Lake-
Lake Michigan from Pentwater to Manistee MI 5 NM offshore to Mid
Lake-
Lake Michigan from Whitehall to Pentwater MI 5 NM offshore to Mid
Lake-
310 AM CDT Sat Oct 14 2017

PORT WASHINGTON WI TO WHITEHALL MI NORTH...

...GALE WARNING IN EFFECT FROM LATE TONIGHT THROUGH SUNDAY
EVENING...

.TODAY...Northeast winds 15 to 25 kt shifting east. Chance of
showers this morning...then showers with a chance of
thunderstorms this afternoon. Waves 3 to 5 ft.
.TONIGHT...East winds to 30 kt backing to northwest gales to 35
kt. Showers. Waves 4 to 7 ft occasionally to 9 ft building to 7 to
10 ft occasionally to 13 ft overnight.
.SUNDAY...Northwest gales to 40 kt. Showers in the morning...
then chance of showers in the afternoon. Waves 8 to 12 ft
occasionally to 16 ft building to 10 to 14 ft occasionally to 18
ft from late morning on.
.SUNDAY NIGHT...Northwest winds 15 to 25 kt. Waves 7 to 10 ft
occasionally to 13 ft subsiding to 4 to 6 ft occasionally to 8 ft
overnight.
.MONDAY...West winds 15 to 25 kt. Waves 2 to 4 ft.
.MONDAY NIGHT...Southwest winds to 30 kt. Waves 4 to 6 ft
occasionally to 8 ft building to 4 to 7 ft occasionally to 9 ft
overnight.
.TUESDAY...West winds to 30 kt becoming southwest 10 to 20 kt in
the afternoon. Waves 4 to 7 ft occasionally to 9 ft subsiding to
3 to 5 ft in the afternoon.
.WEDNESDAY...Southwest gales to 35 kt. Waves 4 to 7 ft
occasionally to 9 ft building to 6 to 9 ft occasionally to 12 ft
in the afternoon.

$$

LMZ080-671-673-675-777-779-872-874-876-878-141530-
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-
310 AM CDT Sat Oct 14 2017

PORT WASHINGTON WI TO WHITEHALL MI SOUTH...

...GALE WARNING IN EFFECT FROM THIS EVENING THROUGH SUNDAY
EVENING...

.TODAY...East winds 10 to 20 kt becoming southeast. Showers
likely with slight chance of thunderstorms this morning...then
showers with thunderstorms likely this afternoon. Waves 2 to 4 ft.
.TONIGHT...South winds to 30 kt with gale force gusts to 35 kt
late this evening becoming southwest gales to 40 kt late. Showers
with a chance of thunderstorms in the evening...then showers and
slight chance of thunderstorms overnight. Waves 3 to 5 ft building
to 7 to 10 ft occasionally to 13 ft.
.SUNDAY...Northwest gales to 40 kt. Chance of showers in the
morning. Waves 10 to 14 ft occasionally to 18 ft.
.SUNDAY NIGHT...Northwest winds 15 to 25 kt. Waves 8 to 11 ft
occasionally to 14 ft subsiding to 4 to 7 ft occasionally to 9 ft
overnight.
.MONDAY...West winds 10 to 20 kt. Waves 2 to 4 ft subsiding to
1 to 3 ft in the afternoon.
.MONDAY NIGHT...Southwest winds to 30 kt. Waves 2 to 4 ft
building to 4 to 6 ft occasionally to 8 ft overnight.
.TUESDAY...Southwest winds 15 to 25 kt. Waves 4 to 6 ft
occasionally to 8 ft.
.WEDNESDAY...Southwest winds to 30 kt. Waves 4 to 7 ft
occasionally to 9 ft.

$$

LMZ761-141530-
MAFOR 1409/
MICHIGAN NORTH 12130 11230 12236 11246 11236 11246. Chance of
showers early this morning. Waves 3 to 5 ft today. Waves 4 to 7
ft occasionally to 9 ft building to 6 to 9 ft occasionally to 11
ft.

MICHIGAN SOUTH...Gale Warning in effect...10126 12226 12326 11329
11436 11446 19456 11556. Chance of thunderstorms today. Chance of
thunderstorms late tonight. Waves 2 to 4 ft today. Waves 3 to 5
ft building to 7 to 10 ft occasionally to 13 ft late tonight.

$$

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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