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000
FZUS63 KLOT 220152
GLFLM

OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
852 PM CDT TUE MAY 21 2013

FOR WATERS BEYOND FIVE NAUTICAL MILES OF SHORE ON LAKE MICHIGAN

.SYNOPSIS...AN ELONGATED AREA OF LOW PRESSURE OF 29.6 INCHES WAS
FROM SOUTHWEST MINNESOTA TO NORTHERN LAKE MICHIGAN THIS EVENING.
THIS LOW WILL MOVE EAST ACROSS THE LAKE WEDNESDAY MORNING...WITH
A COLD FRONT EVENTUALLY PUSHING DOWN THE LAKE LATE WEDNESDAY AS
THE LOW MOVES OFF INTO SOUTHERN QUEBEC AND STRONG HIGH PRESSURE OF
30.5 INCHES BUILDS SOUTH ACROSS MANITOBA. THIS WILL PRODUCE A
PERIOD OF STRONG NORTH WINDS ACROSS THE LAKE BETWEEN THESE TWO
PRESSURE CENTERS LATE WEDNESDAY NIGHT INTO THURSDAY NIGHT. THE
HIGH WILL WEAK SLIGHTLY TO 30.4 INCHES AS IT CONTINUES TO SPREAD
SOUTH ACROSS THE UPPER MISSISSIPPI VALLEY INTO FRIDAY.

//

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.


LMZ261-362-364-563-220930-
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 ROCK ISLAND PASSAGE TO STURGEON BAY WI-
852 PM CDT TUE MAY 21 2013

STURGEON BAY WI TO POINT BETSIE MI NORTH

...GALE WATCH IN EFFECT FROM LATE WEDNESDAY NIGHT THROUGH
THURSDAY EVENING...

.REST OF TONIGHT...EAST WINDS 10 TO 10 KT VEERING TO SOUTHWEST
AND DIMINISHING TO 5 TO 10 KT. SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS LATE THIS EVENING. PATCHY DENSE FOG. WAVES 1 TO 3
FT.
.WEDNESDAY...VARIABLE WINDS 5 TO 10 KT BECOMING NORTHEAST 10 TO
15 KT. CHANCE OF SHOWERS IN THE MORNING...THEN SHOWERS LIKELY IN
THE AFTERNOON. WAVES 1 FT OR LESS.
.WEDNESDAY NIGHT...NORTH WINDS TO 10 TO 20 KT INCREASING TO GALES TO
35 KT LATE. SHOWERS LIKELY. WAVES 3 TO 5 FT OCCASIONALLY TO 8 FT
BUILDING TO 5 TO 8 FT OCCASIONALLY TO 12 FT LATE.
.THURSDAY...NORTH GALES TO 35 KT DIMINISHING TO 30 KT LATE IN THE
AFTERNOON. CHANCE OF SHOWERS IN THE MORNING...THEN SLIGHT CHANCE
OF SHOWERS IN THE AFTERNOON. WAVES 8 TO 11 FT OCCASIONALLY TO 15
FT.
.THURSDAY NIGHT...NORTH WINDS 15 TO 25 KT. WAVES 6 TO 9 FT
OCCASIONALLY TO 13 FT SUBSIDING TO 4 TO 6 FT OCCASIONALLY TO 9 FT
OVERNIGHT.
.FRIDAY...NORTH WINDS 10 TO 15 KT BECOMING WEST. WAVES 3 TO 5 FT
OCCASIONALLY TO 8 FT SUBSIDING TO 1 TO 3 FT IN THE AFTERNOON.
.FRIDAY NIGHT...SOUTHEAST WINDS 5 TO 10 KT BECOMING EAST. WAVES
1 FT OR LESS.
.SATURDAY...SOUTHEAST WINDS 5 TO 10 KT. WAVES NEARLY CALM.
.SUNDAY...EAST WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-220930-
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-
852 PM CDT TUE MAY 21 2013

SHEBOYGAN WI TO PENTWATER MI SOUTH

...GALE WATCH IN EFFECT FROM LATE WEDNESDAY NIGHT THROUGH
THURSDAY EVENING...

.REST OF TONIGHT...SOUTH WINDS 10 TO 15 KT. CHANCE OF SHOWERS AND
SLIGHT CHANCE OF THUNDERSTORMS OVERNIGHT. WAVES 1 TO 3 FT.
.WEDNESDAY...VARIABLE WINDS 5 TO 10 KT BECOMING NORTH LATE IN THE
AFTERNOON. SHOWERS AND THUNDERSTORMS LIKELY. WAVES 1 TO 2 FT.
.WEDNESDAY NIGHT...NORTH WINDS 5 TO 10 KT BECOMING NORTHWEST GALES TO
35 KT LATE. SHOWERS LIKELY. WAVES 1 TO 2 FT BUILDING TO 3 TO 5 FT
OCCASIONALLY TO 8 FT LATE.
.THURSDAY...NORTH GALES TO 35 KT. CHANCE OF SHOWERS. WAVES 7 TO
10 FT OCCASIONALLY TO 14 FT BUILDING TO 10 TO 14 FT OCCASIONALLY
TO 18 FT.
.THURSDAY NIGHT...NORTH WINDS TO 30 KT. WAVES 8 TO 11 FT
OCCASIONALLY TO 15 FT SUBSIDING TO 6 TO 9 FT OCCASIONALLY TO 13 FT.
.FRIDAY...NORTH WINDS 10 TO 20 KT. WAVES 5 TO 8 FT OCCASIONALLY
TO 12 FT SUBSIDING TO 3 TO 5 FT OCCASIONALLY TO 8 FT IN THE
AFTERNOON.
.FRIDAY NIGHT...NORTHEAST WINDS 10 TO 15 KT BECOMING EAST 5 TO
10 KT. WAVES 1 TO 3 FT.
.SATURDAY...EAST WINDS 5 TO 10 KT. SLIGHT CHANCE OF SHOWERS.
WAVES NEARLY CALM.
.SUNDAY...EAST WINDS 10 TO 15 KT. SLIGHT CHANCE OF SHOWERS. WAVES
1 TO 2 FT.

$$

LMZ366-565-567-868-220930-
LAKE MICHIGAN FROM POINT BETSIE TO MANISTEE MI 5 NM OFFSHORE TO
MID LAKE-
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-
852 PM CDT TUE MAY 21 2013

STURGEON BAY WI TO POINT BETSIE MI SOUTH TO SHEBOYGAN WI TO
PENTWATER MI

...GALE WATCH IN EFFECT FROM LATE WEDNESDAY NIGHT THROUGH
THURSDAY EVENING...

.REST OF TONIGHT...SOUTH WINDS 10 TO 15 KT. PATCHY DENSE FOG.
WAVES 1 TO 3 FT.
.WEDNESDAY...VARIABLE WINDS 5 TO 10 KT BECOMING NORTHEAST 10 TO
15 KT. CHANCE OF SHOWERS IN THE MORNING...THEN SHOWERS LIKELY IN
THE AFTERNOON. WAVES 1 FT OR LESS.
.WEDNESDAY NIGHT...NORTH WINDS TO 10 TO 20 KT INCREASING TO GALES TO
35 KT LATE. SHOWERS LIKELY. WAVES 3 TO 5 FT OCCASIONALLY TO 8 FT
BUILDING TO 5 TO 8 FT OCCASIONALLY TO 12 FT LATE.
.THURSDAY...NORTH GALES TO 35 KT DIMINISHING TO 30 KT LATE IN THE
AFTERNOON. CHANCE OF SHOWERS IN THE MORNING...THEN SLIGHT CHANCE
OF SHOWERS IN THE AFTERNOON. WAVES 8 TO 11 FT OCCASIONALLY TO 15
FT.
.THURSDAY NIGHT...NORTH WINDS 15 TO 25 KT. WAVES 6 TO 9 FT
OCCASIONALLY TO 13 FT SUBSIDING TO 4 TO 6 FT OCCASIONALLY TO 9 FT
OVERNIGHT.
.FRIDAY...NORTH WINDS 10 TO 15 KT BECOMING WEST. WAVES 3 TO 5 FT
OCCASIONALLY TO 8 FT SUBSIDING TO 1 TO 3 FT IN THE AFTERNOON.
.FRIDAY NIGHT...SOUTHEAST WINDS 5 TO 10 KT BECOMING EAST. WAVES
1 FT OR LESS.
.SATURDAY...SOUTHEAST WINDS 5 TO 10 KT. WAVES NEARLY CALM.
.SUNDAY...EAST WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.

$$
LMZ761-220930-
MAFOR 2203/
MICHIGAN NORTH 12310 12500 11100 12116 11826. PATCHY DENSE FOG
OVERNIGHT AND EARLY WEDNESDAY MORNING. SCATTERED SHOWERS AND
THUNDERSTORMS ENDING THIS EVENING. CHANCE OF SHOWERS WEDNESDAY
MORNING. WAVES 1 TO 3 FT BUILDING TO 3 TO 5 FT LATE WEDNESDAY
EVENING.

MICHIGAN SOUTH 12410 11400 12406 11909 11809 11106. CHANCE OF
SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS OVERNIGHT. CHANCE OF
THUNDERSTORMS WEDNESDAY MORNING. WAVES 1 TO 3 FT OVERNIGHT.
WAVES 1 FOOT OR LESS WEDNESDAY AND WEDNESDAY EVENING.

$$

RATZER