Great Lakes Forecast
Issued by NWS

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FZUS63 KLOT 212003 CCA
GLFLM

OPEN LAKE FORECAST FOR LAKE MICHIGAN...CORRECTED
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
259 PM CDT TUE OCT 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...LOW PRESSURE OF 29.8 INCHES OVER WESTERN NEW YORK
WILL MERGE WITH ANOTHER LOW OF 29.8 INCHES NEAR THE DELMARVA AREA
TONIGHT...AND RAPIDLY DEEPEN WEDNESDAY NIGHT AND THURSDAY TO 29.4
INCHES JUST SOUTH OF CAPE COD. THIS LOW WILL THEN TRACK NORTHEAST
TO NOVA SCOTIA BY SATURDAY MORNING. MEANWHILE...HIGH PRESSURE OF
30.3 INCHES CENTERED OVER THE SOUTHERN TIP OF JAMES BAY...WITH A
RIDGE OF HIGH PRESSURE AVERAGING 30.1 INCHES EXTENDING THROUGH THE
MIDDLE MISSISSIPPI VALLEY...WILL SLOWLY BUILD EAST. AS THE RIDGE
MOVES TO THE EAST OF THE LAKE WEDNESDAY NIGHT...A TROUGH OF LOW
PRESSURE AVERAGING 29.9 INCHES WILL CROSS THE CENTRAL
PLAINS...REACHING THE UPPER MISSISSIPPI VALLEY BY THURSDAY
MORNING. THIS WILL SET UP A STRENGTHENING SOUTHERLY GRADIENT OVER
THE LAKE. WINDS WILL REMAIN GENERALLY SOUTHERLY UNTIL AN
ASSOCIATED WEAK COLD FRONT PUSHES ACROSS THE LAKE THURSDAY NIGHT.

LMZ261-362-364-366-563-565-567-868-220345-
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-
259 PM CDT TUE OCT 21 2014

SHEBOYGAN WI TO PENTWATER MI NORTH

.TONIGHT...NORTHEAST WINDS 10 TO 20 KT BECOMING EAST 10 TO 15 KT.
WAVES 4 TO 7 FT OCCASIONALLY TO 9 FT SUBSIDING TO 2 TO 4 FT.
.WEDNESDAY...SOUTHEAST WINDS 5 TO 10 KT. WAVES 1 TO 3 FT
SUBSIDING TO 1 TO 2 FT IN THE AFTERNOON.
.WEDNESDAY NIGHT...SOUTH WINDS 10 TO 20 KT. WAVES 1 TO 2 FT
BUILDING TO 1 TO 3 FT OVERNIGHT.
.THURSDAY...SOUTH WINDS 15 TO 25 KT. SLIGHT CHANCE OF SHOWERS IN
THE AFTERNOON. WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT BUILDING TO
4 TO 6 FT OCCASIONALLY TO 8 FT IN THE AFTERNOON.
.THURSDAY NIGHT...SOUTHWEST WINDS 15 TO 20 KT BECOMING WEST 10 TO
20 KT. CHANCE OF SHOWERS. WAVES 4 TO 6 FT OCCASIONALLY TO 8 FT.
.FRIDAY...WEST WINDS 10 TO 20 KT. WAVES 2 TO 4 FT.
.FRIDAY NIGHT...WEST WINDS 10 TO 20 KT. WAVES 2 TO 4 FT.
.SATURDAY...WEST WINDS 15 TO 20 KT. WAVES 2 TO 4 FT.
.SUNDAY...SOUTHWEST WINDS 10 TO 15 KT BECOMING SOUTH 15 TO 20 KT.
WAVES 1 TO 3 FT.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-220345-
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-
259 PM CDT TUE OCT 21 2014

SHEBOYGAN WI TO PENTWATER MI SOUTH

.TONIGHT...NORTHEAST WINDS 15 TO 25 KT BECOMING EAST 10 TO 15 KT
OVERNIGHT. WAVES 5 TO 8 FT OCCASIONALLY TO 10 FT SUBSIDING TO 3 TO
5 FT OCCASIONALLY TO 7 FT.
.WEDNESDAY...EAST WINDS 10 TO 15 KT DIMINISHING TO 5 TO 10 KT.
WAVES 2 TO 4 FT SUBSIDING TO 1 TO 2 FT IN THE AFTERNOON.
.WEDNESDAY NIGHT...SOUTHEAST WINDS 10 TO 15 KT BECOMING SOUTH
15 TO 20 KT. WAVES 1 TO 2 FT BUILDING TO 1 TO 3 FT OVERNIGHT.
.THURSDAY...SOUTH WINDS 10 TO 20 KT. WAVES 2 TO 4 FT BUILDING TO
3 TO 5 FT OCCASIONALLY TO 7 FT IN THE AFTERNOON.
.THURSDAY NIGHT...SOUTHWEST WINDS 15 TO 20 KT BECOMING NORTHWEST.
CHANCE OF SHOWERS. WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT.
.FRIDAY...WEST WINDS 10 TO 20 KT. WAVES 2 TO 4 FT.
.FRIDAY NIGHT...SOUTHWEST WINDS 10 TO 15 KT. WAVES 2 TO 4 FT.
.SATURDAY...WEST WINDS 10 TO 20 KT. WAVES 1 TO 3 FT.
.SUNDAY...SOUTH WINDS 10 TO 20 KT. WAVES 1 TO 3 FT.

$$

LMZ761-220345-
MAFOR 2121/
MICHIGAN NORTH 13120 12210 13300. WAVES 4 TO 7 FT OCCASIONALLY TO
9 FT SUBSIDING TO 2 TO 4 FT TONIGHT...THEN SUBSIDING TO 1 TO 2 FT
WEDNESDAY AFTERNOON.

MICHIGAN SOUTH 12130 11120 13210 12200. WAVES 5 TO 8 FT OCCASIONALLY TO
10 FT SUBSIDING TO 3 TO 5 FT OCCASIONALLY TO 7 FT TONIGHT. WAVES 2
TO 4 FT WEDNESDAY MORNING SUBSIDING TO 1 TO 2 FT IN THE AFTERNOON.

$$

KREIN






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