Great Lakes Forecast
Issued by NWS

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000
FZUS63 KLOT 212046
GLFLM

OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
246 PM CST SUN DEC 21 2014

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 HEIGHT OF THE HIGHEST 1/3 OF THE WAVES...ALONG
WITH THE AVERAGE HEIGHT OF THE HIGHEST 10 PERCENT OF THE WAVES
WHICH WILL OCCASIONALLY BE ENCOUNTERED.

.SYNOPSIS..A 30.4 INCH LOW IS CENTERED OVER NORTHEAST QUEBEC AND
STRETCHES DOWN THE EAST COAST. MEANWHILE A 29.3 INCH LOW IS OVER
MONTANA AND IT WILL SLIDE ACROSS THE CENTRAL PLAINS MONDAY WHILE
FILLING TO 29.4 INCHES. THE LOW CONTINUES TO FILL TO 29.7 INCHES
OVER WISCONSIN TUESDAY WHILE A SECOND LOW OF 29.6 INCHES FORMS
OVER THE SOUTHERN MISSISSIPPI VALLEY. THE SECOND LOW RACES NORTH
OVER THE EASTERN GREAT LAKES WEDNESDAY EVENING...ABSORBS THE
WEAKER LOW...AND DEEPENS TO 28.6 INCHES OVER SOUTHWESTERN QUEBEC.
THE LOW CONTINUES NORTH WHILE ANOTHER LOW AROUND 29.3 INCHES MOVES
OVER THE PLAINS THURSDAY AND IMPACTS LAKE MICHIGAN FRIDAY.

LMZ261-362-364-366-563-565-567-868-220500-
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-
246 PM CST SUN DEC 21 2014

SHEBOYGAN WI TO PENTWATER MI NORTH

.TONIGHT...SOUTH WINDS TO 30 KT. CHANCE OF SNOW THIS EVENING...
THEN SLIGHT CHANCE OF SNOW OVERNIGHT. WAVES 5 TO 8 FT OCCASIONALLY
TO 10 FT BUILDING TO 6 TO 9 FT OCCASIONALLY TO 11 FT.
.MONDAY...SOUTHEAST WINDS 15 TO 25 KT INCREASING TO 30 KT IN THE
AFTERNOON. SLIGHT CHANCE OF RAIN...LIGHT FREEZING RAIN AND SNOW
IN THE MORNING...THEN CHANCE OF RAIN IN THE AFTERNOON. WAVES 5 TO
8 FT OCCASIONALLY TO 10 FT.
.MONDAY NIGHT...SOUTHEAST WINDS TO 30 KT DIMINISHING TO 15 TO 25
KT AFTER MIDNIGHT. PERIODS OF RAIN. WAVES 5 TO 8 FT OCCASIONALLY
TO 10 FT.
.TUESDAY...SOUTHEAST WINDS 15 TO 25 KT BECOMING SOUTH 10 TO 20 KT
IN THE AFTERNOON. RAIN IN THE MORNING...THEN RAIN LIKELY IN THE
AFTERNOON. WAVES 4 TO 7 FT OCCASIONALLY TO 9 FT SUBSIDING TO 4 TO
6 FT OCCASIONALLY TO 8 FT IN THE AFTERNOON.
.TUESDAY NIGHT...SOUTH WINDS 10 TO 15 KT BECOMING WEST 5 TO 10 KT
LATE. CHANCE OF RAIN IN THE EVENING...THEN CHANCE OF RAIN AND
SNOW OVERNIGHT. WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT SUBSIDING TO
2 TO 4 FT OVERNIGHT.
.WEDNESDAY...NORTHWEST WINDS 10 TO 20 KT. CHANCE OF RAIN OR SNOW
IN THE MORNING...THEN CHANCE OF SNOW OR RAIN IN THE AFTERNOON.
WAVES 1 TO 3 FT BUILDING TO 2 TO 4 FT LATE IN THE AFTERNOON.
.WEDNESDAY NIGHT...NORTHWEST WINDS TO 30 KT BECOMING WEST LATE.
OCCASIONAL GALE FORCE GUSTS TO 35 KT ARE POSSIBLE LATE. CHANCE OF
SNOW. WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT BUILDING TO 4 TO 7 FT
OCCASIONALLY TO 9 FT OVERNIGHT.
.THURSDAY...WEST WINDS TO 30 KT BECOMING SOUTHWEST 15 TO 25 KT IN
THE AFTERNOON. CHANCE OF SNOW SHOWERS. WAVES 5 TO 8 FT
OCCASIONALLY TO 10 FT.
.FRIDAY...WEST WINDS 10 TO 20 KT INCREASING TO 15 TO 25 KT IN THE
AFTERNOON. CHANCE OF SNOW. WAVES 2 TO 4 FT BUILDING TO 3 TO 5 FT
OCCASIONALLY TO 7 FT IN THE AFTERNOON.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-220500-
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-
246 PM CST SUN DEC 21 2014

SHEBOYGAN WI TO PENTWATER MI SOUTH

.TONIGHT...SOUTH WINDS TO 30 KT. WAVES 4 TO 7 FT OCCASIONALLY TO
9 FT BUILDING TO 5 TO 8 FT OCCASIONALLY TO 10 FT.
.MONDAY...SOUTHEAST WINDS 15 TO 25 KT INCREASING TO 30 KT IN THE
AFTERNOON. SLIGHT CHANCE OF RAIN AND LIGHT FREEZING RAIN IN THE
MORNING...THEN RAIN LIKELY IN THE AFTERNOON. WAVES 5 TO 8 FT
OCCASIONALLY TO 10 FT.
.MONDAY NIGHT...SOUTHEAST WINDS TO 30 KT DIMINISHING TO 15 TO 25
KT LATE. PERIODS OF RAIN. WAVES 5 TO 8 FT OCCASIONALLY TO 10 FT.
.TUESDAY...SOUTH WINDS 10 TO 20 KT. CHANCE OF RAIN. WAVES SUBSIDING
TO 3 TO 5 FT OCCASIONALLY TO 7 FT IN THE AFTERNOON.
.TUESDAY NIGHT...SOUTHWEST WINDS 10 TO 15 KT BECOMING WEST AFTER
MIDNIGHT. CHANCE OF RAIN IN THE EVENING...THEN CHANCE OF RAIN AND
SNOW OVERNIGHT. WAVES 2 TO 4 FT SUBSIDING TO 1 TO 2 FT OVERNIGHT.
.WEDNESDAY...NORTHWEST WINDS 10 TO 20 KT INCREASING TO 15 TO 25
KT IN THE AFTERNOON. CHANCE OF SNOW OR RAIN IN THE MORNING...THEN
CHANCE OF RAIN OR SNOW IN THE AFTERNOON. WAVES 1 TO 3 FT BUILDING
TO 3 TO 5 FT OCCASIONALLY TO 7 FT IN THE AFTERNOON.
.WEDNESDAY NIGHT...WEST WINDS TO 30 KT. OCCASIONAL GALE FORCE
GUSTS TO 35 KT ARE POSSIBLE LATE. CHANCE OF SNOW. WAVES 4 TO 7 FT
OCCASIONALLY TO 9 FT BUILDING TO 5 TO 8 FT OCCASIONALLY TO 10 FT
OVERNIGHT.
.THURSDAY...SOUTHWEST WINDS TO 30 KT DIMINISHING TO 15 TO 25 KT IN
THE AFTERNOON. SLIGHT CHANCE OF SNOW SHOWERS. WAVES 5 TO 8 FT
OCCASIONALLY TO 10 FT.
.FRIDAY...WEST WINDS 10 TO 20 KT INCREASING TO 15 TO 25 KT IN THE
AFTERNOON. CHANCE OF RAIN OR SNOW. WAVES 2 TO 4 FT BUILDING TO 4 TO
6 FT OCCASIONALLY TO 8 FT IN THE AFTERNOON.


$$

LMZ761-220500-
MAFOR 2122/
MICHIGAN NORTH 14440 11440 12330 11340. CHANCE OF SNOW TONIGHT.
CHANCE OF RAIN MONDAY AFTERNOON. WAVES 5 TO 8 FT OCCASIONALLY TO
10 FT BUILDING TO 6 TO 9 FT OCCASIONALLY TO 11 FT TONIGHT. WAVES
5 TO 8 FT OCCASIONALLY TO 10 FT MONDAY.

MICHIGAN SOUTH 14440 11440 12330 11346. WAVES 4 TO 7 FT
OCCASIONALLY TO 9 FT BUILDING TO 5 TO 8 FT OCCASIONALLY TO 10 FT
TONIGHT. WAVES 5 TO 8 FT OCCASIONALLY TO 10 FT MONDAY.

$$

JEE







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