Great Lakes Forecast
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358
FZUS63 KLOT 200226
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Chicago/Romeoville IL
826 PM CST Mon Feb 19 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 29.6 inches over eastern Iowa will
slowly move across central portions of the lake tonight and
Tuesday morning...then increase in speed as it moves into western
Quebec Tuesday evening. A trailing cold front will move across
the lake Tuesday evening. High pressure of 30.6 inches will move
across the Plains Tuesday night and then across the Great Lakes
region Wednesday night and Thursday.

LMZ261-362-364-366-563-565-567-669-868-870-200900-
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-
826 PM CST Mon Feb 19 2018

PORT WASHINGTON WI TO WHITEHALL MI NORTH...

.REST OF TONIGHT...Northeast winds to 30 kt becoming east 15 to
25 kt overnight. Patchy fog. Rain and snow showers. Wintry mix
possible. Waves 4 to 7 ft occasionally to 9 ft.
.TUESDAY...East winds 10 to 20 kt becoming southwest by early
afternoon...then west late. Rain and snow showers likely. Patchy
fog. Waves 4 to 6 ft occasionally to 8 ft subsiding to 2 to 4 ft.
.TUESDAY NIGHT...West winds 10 to 20 kt becoming northwest to 30
kt. Chance of rain, snow and light freezing rain in the evening.
Waves 3 to 5 ft building to 4 to 7 ft occasionally to 9 ft.
.WEDNESDAY...Northwest winds to 30 kt diminishing to 10 to 20 kt
in the afternoon. Waves 4 to 6 ft occasionally to 8 ft subsiding
to 3 to 5 ft.
.WEDNESDAY NIGHT...Northwest winds 10 to 15 kt becoming northeast.
Waves 2 to 4 ft.
.THURSDAY...East winds 10 to 15 kt. Waves 1 to 3 ft.
.THURSDAY NIGHT...East winds 15 to 25 kt becoming southeast.
Chance of snow. Waves building to 3 to 5 ft.
.FRIDAY...South winds 10 to 20 kt becoming southwest 10 to 15 kt.
Snow likely. Waves 2 to 4 ft.
.SATURDAY...Northeast winds 5 to 10 kt becoming east 10 to 15 kt.
Waves 1 to 2 ft.

$$

LMZ080-671-673-675-777-779-872-874-876-878-200900-
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-
826 PM CST Mon Feb 19 2018

PORT WASHINGTON WI TO WHITEHALL MI SOUTH...

.REST OF TONIGHT...South winds 20 to 25 kt becoming southwest.
Areas of dense fog. Rain showers and a slight chance of
thunderstorms. Waves 3 to 5 ft.
.TUESDAY...South winds 15 to 25 kt becoming southwest to 30 kt.
Patchy fog. Rain showers and a slight chance of thunderstorms.
Waves 3 to 5 ft.
.TUESDAY NIGHT...West winds 15 to 25 kt becoming northwest to 30
kt. Rain with a chance of light freezing rain in the evening...
then a wintry mix likely after midnight. Waves 3 to 5 ft building
to 4 to 7 ft occasionally to 9 ft.
.WEDNESDAY...Northwest winds to 30 kt becoming north 10 to 20 kt
in the afternoon. Waves 4 to 7 ft occasionally to 9 ft.
.WEDNESDAY NIGHT...North winds 10 to 20 kt becoming northeast.
Waves 3 to 5 ft.
.THURSDAY...Northeast winds 10 to 20 kt becoming east. Waves 2 to
4 ft.
.THURSDAY NIGHT...East winds 15 to 25 kt becoming southeast.
Chance of snow and rain. Waves 3 to 5 ft.
.FRIDAY...South winds 10 to 20 kt becoming southwest 10 to 15 kt.
Rain and snow likely. Waves 2 to 4 ft subsiding to 1 to 3 ft.
.SATURDAY...Northeast winds 10 to 15 kt becoming east 10 to 20
kt. Waves 1 to 3 ft.

$$
LMZ761-200900-
MAFOR 2004/
MICHIGAN NORTH 11147 11137 11237 11427 12527 11627 11737.
Patchy fog. Waves 4 to 7 ft occasionally to 9 ft tonight. Waves
4 to 6 ft occasionally to 8 ft subsiding to 2 to 4 ft Tuesday.
Waves 3 to 5 ft Tuesday evening.

MICHIGAN SOUTH 11436 12536 12436 11546 11636 11737. Areas of
dense fog tonight. Patchy fog Tuesday. Waves 3 to 5 ft.

$$

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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