Great Lakes Forecast
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000
FZUS63 KLOT 150756
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Chicago/Romeoville IL
256 AM CDT Sun Apr 15 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...Low pressure of 29.7 inches over southern Indiana
will continue moving east today, before deepening to 29.4 inches
and lifting across the eastern Great Lakes tonight and Monday. The
low will continue to lift into southern Quebec Tuesday morning.
Meanwhile, high pressure of 30.8 inches centered over Northern
Ontario will drift to northern Quebec by this evening. A ridge of
high pressure averaging 30.4 inches will build into the Northern
and Central Plains today and then spread to the Middle and Upper
Mississippi Valley Monday night into Tuesday. Low pressure will
develop across the central Plains on Tuesday, and then track to
the southern Great Lakes Wednesday.

LMZ261-362-364-366-563-565-151530-
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-
256 AM CDT Sun Apr 15 2018

TWO RIVERS WI TO MANISTEE MI NORTH...

...GALE WARNING IN EFFECT THROUGH LATE TONIGHT...

.TODAY...Northeast gales to 45 kt. Occasional storm force winds
to 50 kt. Sleet, snow and slight chance of freezing rain. Waves
14 to 18 ft occasionally to 23 ft subsiding to 12 to 16 ft
occasionally to 21 ft.
.TONIGHT...Northeast gales to 40 kt diminishing to 30 kt. Snow
with possible sleet with rain and freezing rain likely in the
evening, then snow likely with slight chance of freezing rain
overnight. Waves 10 to 14 ft occasionally to 18 ft subsiding to
8 to 11 ft occasionally to 14 ft.
.MONDAY...North winds to 30 kt becoming northwest. Snow likely.
Waves 6 to 9 ft occasionally to 12 ft.
.MONDAY NIGHT...Northwest winds to 30 kt. Chance of snow. Waves
5 to 8 ft occasionally to 10 ft.
.TUESDAY...Northwest winds to 30 kt diminishing to 10 to 20 kt in
the afternoon. Chance of snow in the morning. Waves 4 to 7 ft
occasionally to 9 ft subsiding to 4 to 6 ft occasionally to 8 ft.
.TUESDAY NIGHT...North winds 10 to 20 kt diminishing to 10 to
15 kt. Waves 2 to 4 ft subsiding to 1 to 3 ft.
.WEDNESDAY...Northeast winds 10 to 20 kt increasing to 15 to
25 kt. Chance of rain. Waves 1 to 3 ft building to 4 to 6 ft
occasionally to 8 ft.
.THURSDAY...North winds to 30 kt diminishing to 15 to 25 kt.
Waves 6 to 9 ft occasionally to 12 ft.

$$

LMZ567-669-868-870-151530-
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-
256 AM CDT Sun Apr 15 2018

TWO RIVERS WI TO MANISTEE MI SOUTH TO PORT WASHINGTON WI TO
WHITEHALL MI...

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

.TODAY...Northeast gales to 40 kt diminishing to 30 kt. Sleet,
snow, slight chance of rain and freezing rain this morning, then
light sleet with possible snow, rain and freezing rain likely
this afternoon. Waves 10 to 14 ft occasionally to 18 ft subsiding
to 8 to 11 ft occasionally to 14 ft.
.TONIGHT...Northeast winds to 30 kt becoming north. Rain with
possible snow, sleet and freezing rain likely in the evening,
then chance of rain, snow, light sleet and light freezing rain
likely overnight. Waves 8 to 11 ft occasionally to 14 ft
subsiding to 6 to 9 ft occasionally to 12 ft.
.MONDAY...North winds to 30 kt becoming northwest. Chance of
snow. Waves 7 to 10 ft occasionally to 13 ft.
.MONDAY NIGHT...Northwest winds to 30 kt. Chance of snow. Waves
5 to 8 ft occasionally to 10 ft.
.TUESDAY...Northwest winds 15 to 25 kt diminishing to 10 to
20 kt. Chance of snow in the morning. Waves 5 to 8 ft
occasionally to 10 ft subsiding to 4 to 6 ft occasionally to
8 ft.
.TUESDAY NIGHT...North winds 10 to 15 kt becoming northeast.
Waves 2 to 4 ft subsiding to 1 to 2 ft.
.WEDNESDAY...East winds 15 to 25 kt. Rain likely with a chance of
light freezing rain. Waves 1 to 3 ft building to 3 to 5 ft.
.THURSDAY...North winds 15 to 25 kt. Chance of rain and snow.
Waves 6 to 9 ft occasionally to 12 ft.

$$

LMZ080-671-673-675-777-779-872-874-876-878-151530-
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-
256 AM CDT Sun Apr 15 2018

PORT WASHINGTON WI TO WHITEHALL MI SOUTH...

...GALE WARNING IN EFFECT UNTIL 10 AM CDT THIS MORNING...

.TODAY...Northeast gales to 35 kt diminishing to 15 to 25 kt.
Rain, sleet and freezing rain this morning, then chance of rain
with possible snow and freezing rain likely this afternoon. Waves
10 to 14 ft occasionally to 18 ft subsiding to 8 to 11 ft
occasionally to 14 ft.
.TONIGHT...North winds 15 to 25 kt becoming northwest to 30 kt.
Chance of rain, snow, light sleet and slight chance of light
freezing rain in the evening, then rain likely, chance of snow,
light sleet and light freezing rain overnight. Waves 6 to 9 ft
occasionally to 12 ft.
.MONDAY...Northwest winds to 30 kt. Chance of snow and rain
likely in the morning, then chance of rain and snow in the
afternoon. Waves 7 to 10 ft occasionally to 13 ft.
.MONDAY NIGHT...Northwest winds to 30 kt. Chance of snow. Waves
6 to 9 ft occasionally to 12 ft.
.TUESDAY...Northwest winds to 30 kt diminishing to 10 to 20 kt in
the afternoon. Chance of snow in the morning. Waves 5 to 8 ft
occasionally to 10 ft subsiding to 4 to 7 ft occasionally to
9 ft.
.TUESDAY NIGHT...North winds 10 to 15 kt becoming northeast 10 to
20 kt. Waves 2 to 4 ft subsiding to 1 to 3 ft.
.WEDNESDAY...East winds to 30 kt. Chance of rain. Waves 3 to
5 ft.
.THURSDAY...North winds 15 to 25 kt. Waves 5 to 8 ft occasionally
to 10 ft.

$$

LMZ761-151530-
MAFOR 1509/
MICHIGAN NORTH...GALE WARNING IN EFFECT...14167 19177 11167 12157
11147. Chance of light sleet late, then chance of rain and light
sleet late this evening. Waves 14 to 18 ft occasionally to 23 ft
subsiding to 12 to 16 ft occasionally to 21 ft today. Waves 10 to
14 ft occasionally to 18 ft subsiding to 8 to 11 ft occasionally
to 14 ft tonight.

MICHIGAN SOUTH...GALE WARNING IN EFFECT...11166 11156 11157 12147
11830 11836 11730. Chance of rain today. Chance of rain, snow and
light sleet late, then chance of rain, snow, light sleet and
light freezing rain late this evening. Waves 10 to 14 ft
occasionally to 18 ft subsiding to 8 to 11 ft occasionally to 14
ft today. Waves 6 to 9 ft occasionally to 12 ft tonight.

$$


Rodriguez

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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