Great Lakes Forecast
Issued by NWS

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FZUS63 KLOT 181449
GLFLM

OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
849 AM CST THU DEC 18 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...BROAD HIGH PRESSURE OF 30.4 INCHES EXTENDING FROM
ONTARIO TO THE CENTRAL GULF COAST WILL SLOWLY MOVE EAST AND EXTEND
FROM QUEBEC THROUGH THE LOWER MISSISSIPPI VALLEY BY SATURDAY. THE
HIGH PRESSURE WILL CONTINUE TO VERY SLOW SPREAD TO THE EAST AS A
WEAK TROUGH OF LOW PRESSURE AVERAGING 30.1 INCHES DEVELOPS OVER
THE NORTHERN PLAINS. THIS INITIAL TROUGH WILL MOVE LITTLE INTO
SATURDAY AND THEN A LOW PRESSURE SYSTEM IS EXPECTED TO DROP OUT OF
THE SOUTHERN CANADIAN ROCKIES BY SUNDAY EVENING...HELPING TO
DEEPEN THE SYSTEM TO 29.5 INCHES. THIS LOW IS THEN EXPECTED TO
TRACK EAST TO WISCONSIN EARLY NEXT WEEK WHILE DEEPENING FURTHER TO
29.3 INCHES.

LMZ261-362-364-366-563-565-567-868-182245-
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-
849 AM CST THU DEC 18 2014

SHEBOYGAN WI TO PENTWATER MI NORTH

.REST OF TODAY...NORTH WINDS 15 TO 25 KT DIMINISHING TO 10 TO 20
KT. WAVES 2 TO 4 FT.
.TONIGHT...NORTH WINDS 10 TO 15 KT. WAVES SUBSIDING TO 1 TO 3 FT.
.FRIDAY...NORTHEAST WINDS 10 TO 15 KT. WAVES 1 TO 3 FT.
.FRIDAY NIGHT...VARIABLE WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
.SATURDAY...SOUTH WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
.SATURDAY NIGHT...SOUTH WINDS AROUND 10 KT. WAVES AROUND 1 FT.
.SUNDAY...SOUTH WINDS INCREASING TO 15 TO 25 KT. WAVES BUILDING
TO 2 TO 4 FT.
.MONDAY...SOUTH WINDS 15 TO 25 KT. CHANCE OF RAIN OR SNOW. WAVES
3 TO 5 FT OCCASIONALLY TO 7 FT.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-182245-
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-
849 AM CST THU DEC 18 2014

SHEBOYGAN WI TO PENTWATER MI SOUTH

.REST OF TODAY...NORTHWEST WINDS 10 TO 20 KT. CHANCE OF SNOW
SHOWERS THROUGH MID MORNING...THEN SLIGHT CHANCE OF SNOW SHOWERS
THIS AFTERNOON. WAVES 2 TO 4 FT.
.TONIGHT...NORTH WINDS 10 TO 15 KT. SLIGHT CHANCE OF SNOW SHOWERS
IN THE EVENING. WAVES 2 TO 4 FT.
.FRIDAY...NORTH WINDS 10 TO 15 KT. WAVES SUBSIDING TO 1 TO 2 FT.
.FRIDAY NIGHT...VARIABLE WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
.SATURDAY...SOUTH WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
.SATURDAY NIGHT...SOUTH WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
.SUNDAY...SOUTH WINDS INCREASING TO 15 TO 25 KT. WAVES BUILDING
TO 2 TO 4 FT.
.MONDAY...SOUTH WINDS 15 TO 25 KT. CHANCE OF RAIN OR SNOW. WAVES
3 TO 5 FT OCCASIONALLY TO 7 FT.

$$
LMZ761-182245-
MAFOR 1816/
MICHIGAN NORTH 12830 11820 14810 11110. WAVES 2 TO 4 FT TODAY...
SUBSIDING TO 1 TO 3 FT TONIGHT AND FRIDAY MORNING.

MICHIGAN SOUTH 13720 14810 11810. SLIGHT CHANCE OF SNOW SHOWERS.
WAVES 2 TO 4 FT TODAY AND TONIGHT. WAVES 1 TO 3 FT FRIDAY MORNING.

$$

KREIN




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