Great Lakes Forecast
Issued by NWS

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FZUS63 KLOT 110737
GLFLM

OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
237 AM CDT FRI APR 11 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...WEAK HIGH PRESSURE OF 30.0 INCHES WILL REMAIN OVER
THE SOUTHERN PART OF LAKE MICHIGAN TODAY. AS THIS MOVES EAST
TONIGHT...LOW PRESSURE OF 29.6 INCHES WILL DEVELOP ACROSS THE
UPPER PLAINS. THIS WILL MOVE OVER THE NORTHERN HALF OF THE LAKE ON
SATURDAY NIGHT WHILE LEAVING A TRAILING COLD FRONT DRAPED ACROSS
THE SOUTHERN PART OF THE LAKE ON SUNDAY. LOW PRESSURE OF 29.5
INCHES WILL MOVE ALONG THIS BOUNDARY...FROM THE SOUTHERN PLAINS
SUNDAY AFTERNOON TO AROUND FAR SOUTHERN LAKE MICHIGAN BY LATE
SUNDAY NIGHT. THIS LOW WILL THEN ADVANCE TO WESTERN QUEBEC BY
MONDAY EVENING...POTENTIALLY LEADING TO A PERIOD OF NORTHERLY
GALES FOR THE LAKE ON MONDAY. HIGH PRESSURE OF 30.2 INCHES WILL
BUILD OVER THE LAKE DURING MIDWEEK.

LMZ261-362-364-366-563-565-567-669-868-870-111545-
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 SHEBOYGAN TO PORT WASHINGTON WI 5 NM OFFSHORE
TO MID LAKE-
LAKE MICHIGAN FROM PENTWATER TO MANISTEE MI 5 NM OFFSHORE TO MID
LAKE-
LAKE MICHIGAN FROM WHITEHALL TO PENTWATER MI 5 NM OFFSHORE TO MID
LAKE-
237 AM CDT FRI APR 11 2014

PORT WASHINGTON WI TO WHITEHALL MI NORTH

.TODAY...WEST WINDS 10 TO 15 KT VEERING TO SOUTH EARLY...THEN
INCREASING TO 15 TO 25 KT LATE THIS MORNING. CHANCE OF SHOWERS
FROM LATE MORNING ON. WAVES 1 TO 2 FT BUILDING TO 2 TO 4 FT.
.TONIGHT...SOUTH WINDS 10 TO 15 KT BECOMING SOUTHEAST LATE. WAVES
2 TO 4 FT.
.SATURDAY...SOUTHEAST WINDS 10 TO 20 KT INCREASING TO 15 TO 25 KT
IN THE AFTERNOON. CHANCE OF SHOWERS IN THE MORNING...THEN SHOWERS
WITH A CHANCE OF THUNDERSTORMS IN THE AFTERNOON. WAVES BUILDING TO
3 TO 5 FT OCCASIONALLY TO 7 FT.
.SATURDAY NIGHT...SOUTH WINDS 10 TO 20 KT BECOMING NORTH LATE.
SHOWERS WITH A CHANCE OF THUNDERSTORMS. WAVES 3 TO 5 FT
OCCASIONALLY TO 7 FT.
.SUNDAY...NORTH WINDS 15 TO 25 KT INCREASING TO 30 KT IN THE
AFTERNOON. CHANCE OF SHOWERS. WAVES 3 TO 5 FT OCCASIONALLY TO 7
FT.
.SUNDAY NIGHT...NORTH WINDS TO 30 KT. OCCASIONAL GALE FORCE GUSTS
POSSIBLE LATE. RAIN AND SNOW SHOWERS LIKELY. WAVES BUILDING TO 7
TO 10 FT OCCASIONALLY TO 13 FT.
.MONDAY...NORTH WINDS TO 30 KT EASING TO 15 TO 25 KT MONDAY NIGHT.
OCCASIONAL GALE FORCE GUSTS POSSIBLE DURING THE DAY. CHANCE OF
RAIN AND SNOW SHOWERS. WAVES 8 TO 11 FT OCCASIONALLY TO 14 FT
SUBSIDING TO 5 TO 8 FT OCCASIONALLY TO 10 FT MONDAY NIGHT.
.TUESDAY...NORTH WINDS 10 TO 20 KT. SLIGHT CHANCE OF SNOW. WAVES 4
TO 6 FT OCCASIONALLY TO 8 FT.

WAVE FORECAST IS FOR ICE FREE AREAS.

$$

LMZ080-671-673-675-777-779-872-874-876-878-111545-
LAKE MICHIGAN FROM MICHIGAN CITY IN TO ST. JOSEPH MI 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 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-
237 AM CDT FRI APR 11 2014

PORT WASHINGTON WI TO WHITEHALL MI SOUTH

.TODAY...VARIABLE WINDS 5 TO 10 KT EARLY BECOMING SOUTH 10 TO 20
KT FROM LATE MORNING ON. WAVES 1 TO 3 FT.
.TONIGHT...SOUTH WINDS 10 TO 20 KT BECOMING SOUTHWEST AFTER
MIDNIGHT. WAVES 1 TO 3 FT.
.SATURDAY...SOUTH WINDS 20 TO 25 KT. SHOWERS LIKELY AND A CHANCE
OF THUNDERSTORMS IN THE AFTERNOON. WAVES BUILDING TO 3 TO 5 FT
OCCASIONALLY TO 7 FT.
.SATURDAY NIGHT...SOUTHWEST WINDS TO 30 KT BECOMING SOUTH 15 TO 25
KT. SHOWERS AND THUNDERSTORMS LIKELY...MAINLY OVERNIGHT. WAVES 4
TO 6 FT OCCASIONALLY TO 8 FT.
.SUNDAY...SOUTH WINDS 15 TO 25 KT VEERING TO NORTH LATE IN THE DAY.
SHOWERS WITH A CHANCE OF THUNDERSTORMS. WAVES 3 TO 5 FT
OCCASIONALLY TO 7 FT.
.SUNDAY NIGHT...NORTH WINDS 15 TO 25 KT QUICKLY INCREASING TO 30
KT. OCCASIONAL GALE FORCE GUSTS POSSIBLE LATE. SHOWERS WITH A
CHANCE OF THUNDERSTORMS. WAVES BUILDING TO 7 TO 10 FT
OCCASIONALLY TO 13 FT OVERNIGHT.
.MONDAY...NORTH GALES TO 35 KT. SHOWERS LIKELY. WAVES 10 TO 14 FT
OCCASIONALLY TO 18 FT EASING TO 6 TO 9 FT OCCASIONALLY TO 11 FT
MONDAY NIGHT.
.TUESDAY...NORTH WINDS 15 TO 20 KT. SLIGHT CHANCE OF RAIN AND
SNOW. WAVES 4 TO 7 FT OCCASIONALLY TO 9 FT.

WAVE FORECAST IS FOR ICE FREE AREAS.

$$

LMZ761-111545-
MAFOR 1109/
MICHIGAN NORTH 11610 11420 12430 11420 13410. CHANCE OF SHOWERS
LATE THIS MORNING AND AFTERNOON. WAVES 1 TO 2 FT BUILDING TO 2 TO
4 FT TODAY AND TONIGHT.

MICHIGAN SOUTH 12900 19410 14420 11420 11520. WAVES 1 TO 3 FT.

$$

MTF





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