Great Lakes Forecast
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FZUS63 KLOT 222058
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Chicago/Romeoville IL
258 PM CST Thu Feb 22 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 30.7 inches over southern Quebec
will push to the east late tonight and Friday morning. A low of
30.1 inches will lift from the mid Mississippi Valley early
Friday to the western Great Lakes Friday afternoon. High pressure
of 30.5 inches will build across the Dakotas Friday and move to
Quebec Saturday. Low pressure of 29.5 inches will develop over the
Central Plains Friday night and lift across Lake Superior Sunday
at 29.0 inches. A 30.2 inch high will build over the Central
Plains Monday and move to the upper Ohio Valley Tuesday.

LMZ261-362-364-366-563-565-567-868-230430-
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-
258 PM CST Thu Feb 22 2018

SHEBOYGAN WI TO PENTWATER MI NORTH...

.TONIGHT...East winds 10 to 20 kt becoming southeast 15 to 25 kt.
Chance of light freezing rain and slight chance of snow this
evening...then rain with snow with pockets of sleet and freezing
rain overnight. Waves 2 to 4 ft building to 4 to 7 ft
occasionally to 9 ft.
.FRIDAY...South winds 15 to 25 kt veering to west. Patchy fog in
the morning. Rain, light freezing rain, snow and slight chance of
light sleet in the morning...then slight chance of snow in the
afternoon. Waves 4 to 6 ft occasionally to 8 ft.
.FRIDAY NIGHT...West winds 15 to 25 kt becoming northwest 10 to
20 kt...then becoming north 10 to 15 kt late. Waves 4 to 6 ft
occasionally to 8 ft subsiding to 2 to 4 ft.
.SATURDAY...East winds 10 to 15 kt increasing to 15 to 25 kt in
the afternoon. Waves 1 to 2 ft building to 2 to 4 ft.
.SATURDAY NIGHT...East gales to 35 kt becoming southeast gales to
40 kt. Rain, chance of snow and light sleet in the evening...then
rain overnight. Waves 4 to 7 ft occasionally to 9 ft building to
6 to 9 ft occasionally to 12 ft.
.SUNDAY...Southwest gales to 45 kt. Chance of rain in the
morning. Waves 8 to 12 ft occasionally to 16 ft.
.SUNDAY NIGHT...West gales to 40 kt diminishing to gales to
35 kt. Waves 8 to 11 ft occasionally to 14 ft subsiding to 6 to
9 ft occasionally to 12 ft.
.MONDAY...West winds 15 to 25 kt becoming southwest 10 to 20 kt.
Waves 4 to 6 ft occasionally to 8 ft subsiding to 2 to 4 ft.
.TUESDAY...West winds 10 to 20 kt becoming southwest. Waves 4 to
6 ft occasionally to 8 ft subsiding to 2 to 4 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-230430-
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-
258 PM CST Thu Feb 22 2018

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.TONIGHT...East winds 15 to 25 kt becoming southeast. Rain likely
overnight. Waves 3 to 5 ft building to 4 to 7 ft occasionally to
9 ft.
.FRIDAY...South winds 15 to 25 kt veering to west 10 to 20 kt.
Chance of rain in the morning. Waves 4 to 6 ft occasionally to
8 ft subsiding to 3 to 5 ft.
.FRIDAY NIGHT...West winds 10 to 20 kt veering to northeast 10 to
15 kt. Waves 3 to 5 ft subsiding to 1 to 3 ft.
.SATURDAY...East winds 10 to 20 kt increasing to 30 kt in the
afternoon. Chance of snow and light freezing rain in the
morning...then chance of rain in the afternoon. Waves 2 to 4 ft
building to 3 to 5 ft.
.SATURDAY NIGHT...Southeast gales to 35 kt becoming south gales
to 40 kt. Rain in the evening...then rain likely overnight. Waves
6 to 9 ft occasionally to 12 ft.
.SUNDAY...Southwest gales to 45 kt diminishing to gales to 40 kt.
Waves 8 to 11 ft occasionally to 14 ft.
.SUNDAY NIGHT...West winds to 30 kt. Waves 5 to 8 ft occasionally
to 10 ft.
.MONDAY...West winds 15 to 25 kt becoming southwest 10 to 20 kt.
Waves 3 to 5 ft subsiding to 2 to 4 ft.
.TUESDAY...Southwest winds 10 to 20 kt becoming south. Waves 3 to
5 ft subsiding to 1 to 3 ft.

$$

LMZ761-230430-
MAFOR 2222/
MICHIGAN NORTH 11220 11230 11330 12337 11437 11537 11630. Chance
of light freezing rain this evening. Chance of light sleet Friday
morning. Waves 2 to 4 ft building to 4 to 7 ft occasionally to 9
ft tonight. Waves 4 to 6 ft occasionally to 8 ft Friday.

MICHIGAN SOUTH 12230 12330 11326 11430 11520 11620. Chance of
rain Friday morning. Waves 3 to 5 ft building to 4 to 7 ft
occasionally to 9 ft tonight. Waves 4 to 6 ft occasionally to 8
ft subsiding to 3 to 5 ft Friday.

$$


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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