Great Lakes Forecast
Issued by NWS

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FZUS63 KLOT 290127
GLFLM

OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
827 PM CDT THU AUG 28 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 OVER THE GREAT LAKES WILL
MOVE EAST TO THE NEW ENGLAND COAST ON FRIDAY...WHILE AN AREA OF
LOW PRESSURE OF 29.8 INCHES DEVELOPS WITHIN A WEAKER TROUGH ACROSS
THE CENTRAL PLAINS AND UPPER MIDWEST. THIS LOW WILL CONSOLIDATE
OVER WISCONSIN AND NORTHERN LAKE MICHIGAN INTO SATURDAY...BEFORE
LIFTING NORTHEAST AND TRAILING A WEAK COLD FRONT ACROSS THE LAKE
SATURDAY NIGHT. WEAK HIGH PRESSURE RIDGING OF 29.9 INCHES WILL
SPREAD ACROSS THE LAKE IN THE WAKE OF THE LOW EARLY SUNDAY...AS A
DEEPER LOW OF 29.6 INCHES DEVELOPS OVER THE DAKOTAS AND LIFTS INTO
MANITOBA BY SUNDAY AFTERNOON. A COLD FRONT TRAILING FROM THIS LOW
WILL CONTINUE TO PUSH EAST ACROSS THE WESTERN LAKES ON MONDAY.
WEAK HIGH PRESSURE WILL THEN SPREAD ACROSS THE REGION TUESDAY.

LMZ261-362-364-366-563-565-567-868-290930-
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-
827 PM CDT THU AUG 28 2014

SHEBOYGAN WI TO PENTWATER MI NORTH

.TONIGHT...EAST WINDS AROUND 10 KT BECOMING SOUTHEAST AND
GRADUALLY INCREASING TO 10 TO 20 KT OVERNIGHT. SHOWERS AND
POSSIBLE THUNDERSTORMS LIKELY OVERNIGHT. WAVES 2 FT OR LESS
BUILDING TO 1 TO 3 FT.
.FRIDAY...SOUTH WINDS 15 TO 25 KT. SHOWERS LIKELY AND A CHANCE
OF THUNDERSTORMS...ESPECIALLY IN THE MORNING. WAVES BUILDING TO 4
TO 6 FT OCCASIONALLY TO 8 FT.
.FRIDAY NIGHT...SOUTH WINDS 15 TO 25 KT BECOMING SOUTHWEST IN THE
EVENING...THEN DIMINISHING TO 10 TO 15 KT OVERNIGHT. SHOWERS AND
THUNDERSTORMS LIKELY OVERNIGHT. WAVES 4 TO 6 FT OCCASIONALLY TO 8
FT SUBSIDING TO 2 TO 4 FT.
.SATURDAY...SOUTHWEST WINDS 10 TO 15 KT VEERING NORTHWEST TOWARD
EVENING. SHOWERS AND THUNDERSTORMS LIKELY. WAVES SUBSIDING TO 1 TO
3 FT.
.SATURDAY NIGHT...NORTH WINDS 10 TO 15 KT. SLIGHT CHANCE OF
SHOWERS AND THUNDERSTORMS IN THE EVENING. WAVES 1 TO 3 FT.
.SUNDAY...NORTH WINDS 10 TO 15 KT VEERING TO SOUTHEAST 5 TO
10 KT. WAVES 1 TO 3 FT.
.SUNDAY NIGHT...SOUTH WINDS 10 TO 20 KT. SLIGHT CHANCE OF SHOWERS
AND THUNDERSTORMS. WAVES 2 TO 4 FT.
.MONDAY...SOUTH WINDS 15 TO 25 KT BECOMING SOUTHWEST. SHOWERS AND
THUNDERSTORMS LIKELY. WAVES 4 TO 6 FT OCCASIONALLY TO 8 FT.
.TUESDAY...SOUTHWEST WINDS 10 TO 15 KT. SLIGHT CHANCE OF SHOWERS
AND THUNDERSTORMS. WAVES SUBSIDING TO 1 TO 3 FT.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-290930-
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-
827 PM CDT THU AUG 28 2014

SHEBOYGAN WI TO PENTWATER MI SOUTH

.TONIGHT...EAST WINDS 10 TO 15 KT BECOMING SOUTHEAST AND
INCREASING TO 15 TO 20 KT AFTER MIDNIGHT. CHANCE OF SHOWERS AND
SLIGHT CHANCE OF THUNDERSTORMS OVERNIGHT. WAVES 2 TO 4 FT.
.FRIDAY...SOUTH WINDS 15 TO 25 KT. CHANCE OF SHOWERS AND
THUNDERSTORMS. WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT.
.FRIDAY NIGHT...SOUTH WINDS 15 TO 25 KT EASING TO 10 TO 20 KT. CHANCE
OF SHOWERS AND THUNDERSTORMS. WAVES 3 TO 5 FT OCCASIONALLY TO 7
FT.
.SATURDAY...SOUTHWEST WINDS 10 TO 20 KT. SHOWERS AND THUNDERSTORMS
LIKELY...ESPECIALLY IN THE MORNING. WAVES SUBSIDING 2 TO 4 FT.
.SATURDAY NIGHT...SOUTHWEST WINDS 10 TO 15 KT VEERING NORTHWEST
TOWARD MORNING. SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS IN THE
EVENING. WAVES 1 TO 3 FT.
.SUNDAY...NORTHWEST WINDS 10 TO 15 KT BACKING TO SOUTH 5 TO 10
KT. SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES 1 TO 2 FT.
.SUNDAY NIGHT...SOUTH WINDS 10 TO 20 KT INCREASING TO 15 TO 25 KT.
CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES BUILDING TO 2 TO 4 FT.
.MONDAY...SOUTHWEST WINDS 15 TO 25 KT. SHOWERS AND THUNDERSTORMS
LIKELY. WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT.
.TUESDAY...WEST WINDS 10 TO 15 KT BECOMING SOUTHWEST. SLIGHT
CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES 1 TO 3 FT.

$$
LMZ761-290930-
MAFOR 2903/
MICHIGAN NORTH 11200 11310 11320 12439 13430. CHANCE OF SHOWERS
AND THUNDERSTORMS. WAVES 2 FT OR LESS LATE THIS EVENING BUILDING
TO 1 TO 3 FT BY MORNING...THEN TO 4 TO 6 FT OCCASIONALLY TO 8 FT
FRIDAY.

MICHIGAN SOUTH 11210 11310 11320 14430 11520. CHANCE OF SHOWERS
AND THUNDERSTORMS FRIDAY. WAVES 2 TO 4 FT TONIGHT AND 3 TO 5 FT
OCCASIONALLY TO 7 FT FRIDAY.

$$

IZZI





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