Great Lakes Forecast
Issued by NWS

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FZUS63 KLOT 240123
GLFLM

OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
823 PM CDT WED APR 23 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...HIGH PRESSURE OF 30.2 INCHES ACROSS LAKE MICHIGAN
WILL MOVE TO LAKE HURON LATE TONIGHT. MEANWHILE...LOW PRESSURE OF
29.4 INCHES ACROSS THE CENTRAL PLAINS THIS EVENING WILL MOVE TO
WESTERN ILLINOIS BY THURSDAY EVENING AND THEN ACROSS THE SOUTHERN
PART OF THE LAKE BY EARLY FRIDAY MORNING. A HIGH PRESSURE RIDGE
OF 30.1 INCHES WILL THEN BUILD OVER THE LAKE SATURDAY AND
STRENGTHEN TO 30.3 INCHES ON SUNDAY AS IT SLOWLY MOVES EAST OVER
THE CENTRAL LAKES. MEANWHILE...STRONG LOW PRESSURE OF 29.2 INCHES
ACROSS THE SOUTHERN PLAINS ON SATURDAY WILL MOVE TO THE LOWER OHIO
VALLEY BY TUESDAY.

LMZ261-362-364-366-563-565-567-868-240930-
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-
823 PM CDT WED APR 23 2014

SHEBOYGAN WI TO PENTWATER MI NORTH

.REST OF TONIGHT...VARIABLE WINDS 5 TO 10 KT EARLY BECOMING EAST
10 TO 15 KT OVERNIGHT. WAVES 1 TO 2 FT.
.THURSDAY...EAST WINDS 10 TO 20 KT INCREASING TO 15 TO 25 KT IN
THE AFTERNOON. SHOWERS LIKELY...MAINLY IN THE AFTERNOON. WAVES
BUILDING TO 3 TO 5 FT OCCASIONALLY TO 7 FT IN THE LATE AFTERNOON.
.THURSDAY NIGHT...SOUTHEAST WINDS TO 30 KT BECOMING SOUTH 15 TO
25 KT AFTER MIDNIGHT. SHOWERS. WAVES 4 TO 6 FT OCCASIONALLY TO 8
FT.
.FRIDAY...SOUTHWEST WINDS 15 TO 25 KT BECOMING WEST. CHANCE OF
SHOWERS. WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT.
.FRIDAY NIGHT...NORTHWEST WINDS 20 TO 25 KT. CHANCE OF SHOWERS IN
THE EVENING. WAVES 4 TO 6 FT OCCASIONALLY TO 8 FT.
.SATURDAY...NORTH WINDS 15 TO 25 KT. WAVES 4 TO 6 FT OCCASIONALLY
TO 8 FT.
.SATURDAY NIGHT...NORTHEAST WINDS 10 TO 20 KT. SLIGHT CHANCE OF
RAIN AND SNOW SHOWERS. WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT.
.SUNDAY...NORTHEAST WINDS 15 TO 25 KT. CHANCE OF SHOWERS. WAVES
4 TO 6 FT OCCASIONALLY TO 8 FT.
.MONDAY...NORTHEAST WINDS 20 TO 25 KT. CHANCE OF SHOWERS. WAVES 4
TO 7 FT OCCASIONALLY TO 9 FT.

WAVE FORECAST IS FOR ICE FREE AREAS

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-240930-
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-
823 PM CDT WED APR 23 2014

SHEBOYGAN WI TO PENTWATER MI SOUTH

.REST OF TONIGHT...NORTHEAST WINDS 10 TO 15 KT BECOMING EAST
OVERNIGHT. SCATTERED SHOWERS FROM LATE EVENING ON. WAVES 1 TO 3
FT.
.THURSDAY...SOUTHEAST WINDS 15 TO 25 KT INCREASING TO 30 KT IN THE
AFTERNOON. CHANCE OF SHOWERS AND THUNDERSTORMS IN THE
MORNING...THEN SHOWERS WITH A CHANCE OF THUNDERSTORMS IN THE
AFTERNOON. WAVES 2 TO 4 FT BUILDING TO 4 TO 7 FT OCCASIONALLY TO 9
FT.
.THURSDAY NIGHT...SOUTH WINDS 15 TO 25 KT DIMINISHING TO 10 TO 20
KT BY LATE EVENING...THEN VEERING TO WEST TOWARD DAYBREAK.
SHOWERS. A CHANCE OF THUNDERSTORMS IN THE EVENING. WAVES SUBSIDING
TO 3 TO 5 FT OCCASIONALLY TO 7 FT LATE.
.FRIDAY...WEST WINDS 20 TO 25 KT. WAVES 3 TO 5 FT OCCASIONALLY TO
7 FT.
.FRIDAY NIGHT...NORTHWEST WINDS 20 TO 25 KT BECOMING NORTH.
CHANCE OF SHOWERS OVERNIGHT. WAVES 4 TO 6 FT OCCASIONALLY TO 8 FT.
.SATURDAY...NORTH WINDS 20 TO 25 KT. WAVES 4 TO 6 FT OCCASIONALLY
TO 8 FT.
.SATURDAY NIGHT...NORTHEAST WINDS 20 TO 25 KT. SLIGHT CHANCE OF
SHOWERS. WAVES 4 TO 6 FT OCCASIONALLY TO 8 FT.
.SUNDAY...EAST WINDS 20 TO 25 KT INCREASING TO 30 KT SUNDAY NIGHT.
CHANCE OF SHOWERS. WAVES BUILDING TO 5 TO 8 FT OCCASIONALLY TO 10
FT.
.MONDAY...EAST WINDS TO 30 KT. CHANCE OF SHOWERS. WAVES 5 TO 8 FT
OCCASIONALLY TO 10 FT.

$$
LMZ761-240930-
MAFOR 2403/
MICHIGAN NORTH 11900 12210 12220 11230 11236 11346. CHANCE OF
RAIN SHOWERS THURSDAY. RAIN SHOWERS THURSDAY EVENING. WAVES 1 TO
2 FT OVERNIGHT. WAVES BUILDING TO 3 TO 5 FT OCCASIONALLY TO 7 FT
THURSDAY AND TO 4 TO 6 FT OCCASIONALLY TO 8 FT THURSDAY EVENING.

MICHIGAN SOUTH 11110 12210 12330 12340 11436. SCATTERED RAIN
SHOWERS LATE THIS EVENING. CHANCE OF RAIN SHOWERS THURSDAY.
SHOWERS THURSDAY EVENING. WAVES 1 TO 3 FT OVERNIGHT. WAVES 2 TO 4
FT BUILDING TO 4 TO 7 FT OCCASIONALLY TO 9 FT THURSDAY AND
THURSDAY EVENING.

$$

KJB






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