Great Lakes Forecast
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797
FZUS63 KMKX 220206
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Milwaukee/Sullivan WI
906 PM CDT Fri Sep 21 2018

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 30.30 inches over southern Minnesota will drift
across the central Great Lakes Saturday into Saturday night.
Meanwhile, a weak trough of low pressure settle over Lake
Superior. This will result in a steady south to southwest wind
over the far northern portion of Lake Michigan, while the south
will be in a much weaker wind flow regime.

On Sunday, an additional area of high pressure of 30.5 inches
will slide across Ontario and Quebec with an easterly flow over
Lake Michigan.

LMZ261-563-565-567-669-671-868-870-872-220930-
Lake Michigan from Seul Choix Point to Rock Island Passage 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 Port Washington to North Point Light 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-
Lake Michigan from Grand Haven to Whitehall MI 5 NM offshore to
Mid Lake-
906 PM CDT Fri Sep 21 2018

NORTH POINT LIGHT WI TO GRAND HAVEN MI NORTH...

.REST OF TONIGHT...North winds to 30 kt diminishing to 10 to
15 kt. Waves 6 to 9 ft occasionally to 12 ft subsiding to 4 to
6 ft occasionally to 8 ft.
.SATURDAY...North winds 10 to 15 kt backing to south 10 to 20 kt.
Waves 3 to 5 ft.
.SATURDAY NIGHT...Southwest winds 10 to 20 kt becoming west 10 to
15 kt. Waves 3 to 5 ft.
.SUNDAY...Southwest winds 10 to 15 kt backing to east 10 to
20 kt. Waves 1 to 3 ft building to 2 to 4 ft.
.SUNDAY NIGHT...Southeast winds 10 to 20 kt increasing to 15 to
25 kt. Waves 4 to 6 ft occasionally to 8 ft.
.MONDAY...Southeast winds 15 to 25 kt becoming south. Waves 3 to
5 ft.
.MONDAY NIGHT...South winds 10 to 20 kt increasing to 15 to
25 kt. Chance of showers. Waves 3 to 5 ft.
.TUESDAY...Southwest winds 15 to 25 kt becoming west 10 to 20 kt.
Chance of showers. Waves 3 to 5 ft.
.WEDNESDAY...Northwest winds 10 to 20 kt becoming west. Waves
3 to 5 ft.

$$

LMZ362-364-366-220930-
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-
906 PM CDT Fri Sep 21 2018

WILMETTE HARBOR IL TO ST. JOSEPH MI SOUTH TO ROCK ISLAND PASSAGE
TO CHARLEVOIX MI...

...GALE WARNING IN EFFECT UNTIL 11 PM CDT THIS EVENING...

.REST OF TONIGHT...Northwest winds to 30 kt diminishing to 10 to
15 kt. Slight chance of showers this evening. Waves 6 to 9 ft
occasionally to 12 ft subsiding to 3 to 5 ft.
.SATURDAY...West winds 10 to 15 kt becoming southwest 10 to
20 kt. Waves 2 to 4 ft.
.SATURDAY NIGHT...Southwest winds 10 to 20 kt becoming west 10 to
15 kt. Waves 3 to 5 ft.
.SUNDAY...North winds 10 to 20 kt becoming east. Waves 2 to 4 ft.
.SUNDAY NIGHT...East winds 10 to 20 kt becoming southeast. Waves
3 to 5 ft.
.MONDAY...Southeast winds 10 to 20 kt becoming south. Waves 3 to
5 ft.
.MONDAY NIGHT...South winds 15 to 25 kt. Chance of showers. Waves
3 to 5 ft.
.TUESDAY...Southwest winds 15 to 25 kt becoming northwest 10 to
20 kt. Waves 3 to 5 ft.
.WEDNESDAY...West winds 10 to 20 kt. Waves 3 to 5 ft.

$$

LMZ080-673-675-777-779-874-876-878-220930-
Lake Michigan from Michigan City IN to St. Joseph MI 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 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-
906 PM CDT Fri Sep 21 2018

NORTH POINT LIGHT WI TO GRAND HAVEN MI SOUTH...

.REST OF TONIGHT...Northwest winds to 30 kt becoming north 15 to
25 kt late this evening, then diminishing to 10 to 20 kt after
midnight becoming northeast late. Waves 6 to 9 ft occasionally to
12 ft subsiding to 4 to 7 ft occasionally to 9 ft.
.SATURDAY...Northeast winds 10 to 20 kt becoming east 5 to 10 kt.
Waves 4 to 6 ft occasionally to 8 ft subsiding to 2 to 4 ft.
.SATURDAY NIGHT...Southeast winds 5 to 10 kt becoming south.
Waves 1 to 2 ft.
.SUNDAY...Southeast winds 5 to 10 kt becoming east. Waves 1 ft or
less.
.SUNDAY NIGHT...East winds 10 to 20 kt becoming southeast. Waves
2 to 4 ft building to 3 to 5 ft.
.MONDAY...Southeast winds 10 to 20 kt. Waves 3 to 5 ft.
.MONDAY NIGHT...South winds 10 to 20 kt. Chance of showers. Waves
3 to 5 ft.
.TUESDAY...Southwest winds 10 to 20 kt becoming west. Chance of
showers. Waves 2 to 4 ft.
.WEDNESDAY...Northwest winds 10 to 20 kt. Waves 3 to 5 ft.

$$

LMZ761-220930-
MAFOR 2203/
MICHIGAN NORTH...GALE WARNING IN EFFECT...11840 12820 11710
14520. Waves 5 to 8 ft occasionally to 10 ft subsiding to 4 to 6
ft occasionally to 8 ft overnight. Waves 3 to 5 ft Saturday and
Saturday evening.

MICHIGAN SOUTH 11830 11820 13120 11300 12310. Waves 6 to 9 ft
occasionally to 12 ft subsiding to 4 to 7 ft occasionally to 9 ft
overnight. Waves 4 to 6 ft occasionally to 8 ft subsiding to 2 to
4 ft Saturday. Waves 1 to 3 ft Saturday evening.

$$


Davis

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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