Great Lakes Forecast
Issued by NWS

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000
FZUS63 KLOT 291958 CCA
GLFLM

OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
249 PM CDT TUE JUL 29 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 THE NORTHERN AND
CENTRAL PLAINS WILL GRADUALLY WEAKEN TO 30.0 INCHES BY WEDNESDAY
AFTERNOON.  MEANWHILE...LOW PRESSURE OF 29.9 INCHES WILL DEVELOP
ACROSS FAR EASTERN ONTARIO BY LATE AFTERNOON AND MOVE TO NEAR LAKE
HURON BY TONIGHT. THIS LOW WILL STEER A WEAK COOL FRONT SOUTHWARD
DOWN THE LAKE TONIGHT INTO EARLY WEDNESDAY MORNING. ANOTHER LOW OF
SIMILAR MAGNITUDE WILL MOVE SOUTHWARD AND MERGE WITH THIS LOW ON
WEDNESDAY. THESE LOWS WILL EVENTUALLY BECOME A COMBINED LOW NEAR
29.8 INCHES THAT WILL MOVE SLOWLY NORTH THROUGH QUEBEC ON THURSDAY
AND INTO FRIDAY. A WEAK COOL FRONT EXTENDING FROM THIS LOW WILL
MOVE SOUTHWARD ACROSS THE LAKES REGION DURING OR NEAR FRIDAY
NIGHT. HIGH PRESSURE OF 30.2 INCHES WILL THEN BUILD OVER THE GREAT
LAKES REGION DURING SATURDAY NIGHT INTO SUNDAY AND LINGER THROUGH
MONDAY.

LMZ261-362-364-366-563-565-567-868-300400-
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-
249 PM CDT TUE JUL 29 2014

SHEBOYGAN WI TO PENTWATER MI NORTH

.TONIGHT...VARIABLE WINDS 5 TO 10 KT. SCATTERED SHOWERS WITH
ISOLATED THUNDERSTORMS THROUGH EARLY EVENING...THEN ISOLATED
SHOWERS LATE THIS EVENING. WAVES 1 TO 2 FT IN THE EVENING...THEN 1
FT OR LESS.
.WEDNESDAY...NORTHWEST WINDS 5 TO 10 KT BACKING TO SOUTH IN THE EARLY
AFTERNOON...THEN INCREASING 10 TO 15 KT LATE AFTERNOON. WAVES 1
FT OR LESS INCREASING TO 1 TO 2 FT.
.WEDNESDAY NIGHT...SOUTHWEST WINDS 10 TO 15 KT. SLIGHT CHANCE OF
SHOWERS IN THE EVENING. WAVES 1 TO 2 FT.
.THURSDAY...WEST WINDS 10 TO 15 KT BECOMING SOUTHWEST. SLIGHT CHANCE
OF SHOWERS AND THUNDERSTORMS IN THE AFTERNOON. WAVES 1 TO 2 FT.
.THURSDAY NIGHT...SOUTH WINDS 10 TO 15 KT. WAVES 1 TO 2 FT.
.FRIDAY...SOUTH WINDS 5 TO 10 KT. SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. WAVES 1 FT OR LESS.
.FRIDAY NIGHT...SOUTHEAST WINDS 5 TO 10 KT BECOMING EAST. SLIGHT
CHANCE OF SHOWERS. WAVES 1 FT OR LESS.
.SATURDAY...NORTH WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
.SUNDAY...SOUTHWEST WINDS 10 TO 15 KT. WAVES 1 TO 2 FT.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-300400-
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-
249 PM CDT TUE JUL 29 2014

SHEBOYGAN WI TO PENTWATER MI SOUTH

.TONIGHT...VARIABLE WINDS 5 TO 10 KT BECOMING NORTHWEST 10 TO 15 KT.
SCATTERED SHOWERS WITH ISOLATED THUNDERSTORMS THROUGH EARLY
EVENING...THEN ISOLATED SHOWERS. WAVES 1 FT OR LESS.
.WEDNESDAY...NORTHWEST WINDS 5 TO 10 KT BECOMING NORTH 10 TO 15 KT
IN THE AFTERNOON. SLIGHT CHANCE OF SHOWERS IN THE MORNING. WAVES 1
FT OR LESS INCREASING TO 1 TO 2 FT IN THE AFTERNOON.
.WEDNESDAY NIGHT...SOUTH WINDS 5 TO 10 KT BECOMING SOUTHWEST 10 TO 15
KT. WAVES 1 TO 2 FT.
.THURSDAY...WEST WINDS 10 TO 15 KT BECOMING SOUTHWEST. SLIGHT
CHANCE OF SHOWERS AND THUNDERSTORMS IN THE AFTERNOON. WAVES 1 TO
2 FT.
.THURSDAY NIGHT...SOUTHWEST WINDS 10 TO 15 KT. WAVES 1 FT OR
LESS.
.FRIDAY...SOUTHWEST WINDS 5 TO 10 KT. SLIGHT CHANCE OF SHOWERS
AND THUNDERSTORMS. WAVES 1 TO 2 FT.
.FRIDAY NIGHT...SOUTHWEST WINDS 5 TO 10 KT. SLIGHT CHANCE OF
SHOWERS. WAVES 1 FT OR LESS.
.SATURDAY...NORTH WINDS 5 TO 10 KT. SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. WAVES 1 FT OR LESS.
.SUNDAY...NORTHWEST WINDS 5 TO 10 KT BECOMING WEST. WAVES 1 TO
2 FT.

$$

LMZ761-300400-
MAFOR 2921/
MICHIGAN NORTH 14900 11900 12700 11500. SCATTERED SHOWERS AND
ISOLATED THUNDERSTORMS THROUGH THE EVENING. WAVES 1 TO 2 FT
TONIGHT. WAVES 1 FT OR LESS THROUGH EARLY WEDNESDAY AFTERNOON.

MICHIGAN SOUTH 13900 11700 11710 12800 11810. SCATTERED SHOWERS
AND THUNDERSTORMS EARLY. WAVES 1 FT OR LESS TONIGHT INCREASING TO
1 TO 2 FT LATE WEDNESDAY.

$$

KMD








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