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NWS Forecast

FZUS63 KLOT 251401
GLFLM

OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
901 AM CDT MON MAY 25 2015

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 LOW PRESSURE OF 29.7 INCHES JUST SOUTH OF LAKE
SUPERIOR WILL MOVE NORTHEAST OVER THE UPPER PENINSULA OF MICHIGAN
TODAY. THE LOW WILL THEN WEAKEN AND MOVE INTO CENTRAL QUEBEC BY
MIDDAY TUESDAY. AN ASSOCIATED FRONTAL BOUNDARY WILL REMAIN OVER
THE NORTHERN PORTION OF LAKE MICHIGAN TUESDAY...AS A LOW PRESSURE
OF 29.8 INCHES LIFTS NORTHEAST ACROSS LAKE MICHIGAN LATE TUESDAY
NIGHT. A HIGH PRESSURE RIDGE AVERAGING 30.1 INCHES WILL MOVE OVER
THE GREAT LAKES WEDNESDAY NIGHT INTO THURSDAY.

LMZ261-362-364-366-563-565-567-868-252145-
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-
901 AM CDT MON MAY 25 2015

SHEBOYGAN WI TO PENTWATER MI NORTH

REST OF TODAY
SOUTHEAST WINDS 15 TO 25 KT BECOMING SOUTHWEST
TO 30 KT. AREAS OF FOG. SCATTERED SHOWERS WITH ISOLATED
THUNDERSTORMS. WAVES 1 TO 3 FT BUILDING TO 3 TO 5 FT OCCASIONALLY
TO 7 FT.

TONIGHT
SOUTHWEST WINDS TO 15 TO 25 KT DIMINISHING TO 10 TO 20
KT. AREAS OF FOG. CHANCE OF SHOWERS AND SLIGHT CHANCE OF
THUNDERSTORMS. WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT.

TUESDAY
SOUTHWEST WINDS 10 TO 20 KT BECOMING SOUTH 5 TO 10 KT.
AREAS OF FOG. CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES 3 TO
5 FT OCCASIONALLY TO 7 FT SUBSIDING TO 1 TO 3 FT.

TUESDAY NIGHT
SOUTH WINDS 5 TO 10 KT BECOMING SOUTHWEST. AREAS
OF FOG. SHOWERS LIKELY WITH A CHANCE OF THUNDERSTORMS IN THE
EVENING...THEN CHANCE OF SHOWERS OVERNIGHT. WAVES 1 TO 3 FT.

WEDNESDAY
SOUTHWEST WINDS 5 TO 10 KT. CHANCE OF SHOWERS AND
THUNDERSTORMS IN THE MORNING. WAVES 1 TO 2 FT.

WEDNESDAY NIGHT
SOUTHWEST WINDS 5 TO 10 KT. WAVES 1 FT OR
LESS.

THURSDAY
SOUTHWEST WINDS 10 TO 15 KT BECOMING SOUTH. WAVES
1 TO 2 FT.

FRIDAY
SOUTH WINDS 10 TO 20 KT BECOMING SOUTHWEST. CHANCE OF
SHOWERS AND THUNDERSTORMS. WAVES 2 TO 4 FT.



LMZ080-669-671-673-675-777-779-870-872-874-876-878-252145-
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-
901 AM CDT MON MAY 25 2015

SHEBOYGAN WI TO PENTWATER MI SOUTH

REST OF TODAY
SOUTH WINDS TO 30 KT BECOMING SOUTHWEST 15 TO 25
KT. AREAS OF FOG. CHANCE OF SHOWERS WITH ISOLATED THUNDERSTORMS
THIS MORNING...THEN ISOLATED SHOWERS THIS AFTERNOON. WAVES
BUILDING TO 3 TO 5 FT OCCASIONALLY TO 7 FT.

TONIGHT
SOUTHWEST WINDS 15 TO 25 KT BECOMING SOUTH 10 TO 20
KT. AREAS OF FOG. CHANCE OF SHOWERS AND SLIGHT CHANCE OF
THUNDERSTORMS OVERNIGHT. WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT.

TUESDAY
SOUTH WINDS 10 TO 20 KT DIMINISHING TO 10 TO 15 KT.
AREAS OF FOG. CHANCE OF SHOWERS AND THUNDERSTORMS IN THE
MORNING...THEN SHOWERS AND THUNDERSTORMS LIKELY IN THE AFTERNOON.
WAVES 2 TO 4 FT.

TUESDAY NIGHT
SOUTH WINDS 10 TO 20 KT BECOMING SOUTHWEST.
AREAS OF FOG. SHOWERS LIKELY WITH A CHANCE OF THUNDERSTORMS IN
THE EVENING...THEN CHANCE OF SHOWERS AND THUNDERSTORMS OVERNIGHT.
WAVES 1 TO 3 FT.

WEDNESDAY
SOUTHWEST WINDS 10 TO 15 KT. CHANCE OF SHOWERS AND
THUNDERSTORMS IN THE MORNING...THEN CHANCE OF SHOWERS IN THE
AFTERNOON. WAVES 1 TO 3 FT.

WEDNESDAY NIGHT
SOUTHWEST WINDS 5 TO 10 KT. WAVES 1 TO 3 FT.

THURSDAY
SOUTHWEST WINDS 5 TO 10 KT BECOMING SOUTHEAST. WAVES
2 FT OR LESS.

FRIDAY
SOUTH WINDS 10 TO 20 KT BECOMING SOUTHWEST. CHANCE OF
SHOWERS AND THUNDERSTORMS. WAVES 1 TO 3 FT. 


LMZ761-252145-
MAFOR 2516/
MICHIGAN NORTH 12333 11543 11533 13523 11423. CHANCE OF SHOWERS
THROUGH THE DAY. CHANCE OF SHOWERS AND THUNDERSTORMS TUESDAY
MORNING. WAVES BUILDING TO 3 TO 5 FT OCCASIONALLY TO 7 FT.

MICHIGAN SOUTH 11443 13533 14423. CHANCE OF SHOWERS LATE THIS
MORNING. CHANCE OF SHOWERS AND THUNDERSTORMS TUESDAY MORNING.
WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT TONIGHT. WAVES 3 TO 5 FT
OCCASIONALLY TO 7 FT SUBSIDING TO 2 TO 4 FT TUESDAY MORNING.



KMD