Great Lakes Forecast
Issued by NWS

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FZUS63 KLOT 041353
GLFLM

OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
853 AM CDT MON MAY 4 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 COLD FRONT AVERAGING 29.8 INCHES ACROSS THE SOUTH
END OF THE LAKE THIS MORNING WILL STALL ACROSS CENTRAL ILLINOIS
AND INDIANA TONIGHT. MEANWHILE HIGH PRESSURE OF 30.3 INCHES
WILL SPREAD ACROSS THE NORTHERN GREAT LAKES. THIS HIGH WILL
PERSIST THROUGH TUESDAY EVENING BEFORE SHIFTING EAST ALLOWING THE
FRONT TO LIFT NORTHWARD LATE TUESDAY NIGHT INTO WEDNESDAY. LOW
PRESSURE OF 29.5 INCHES WILL DEVELOP IN THE UPPER PLAINS ON
WEDNESDAY NIGHT AND ADVANCE TO CENTRAL ONTARIO BY FRIDAY MORNING.
THIS WILL STEER A WEAK COOL FRONT INTO THE WESTERN GREAT LAKES ON
SATURDAY.

LMZ261-362-364-366-563-565-567-868-042115-
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-
853 AM CDT MON MAY 4 2015

SHEBOYGAN WI TO PENTWATER MI NORTH

.REST OF TODAY...NORTHWEST WINDS 10 TO 15 KT BECOMING NORTH 10 TO
20 KT. WAVES 2 TO 4 FT.
.TONIGHT...NORTH WINDS 10 TO 20 KT BECOMING NORTHEAST 10 TO
15 KT. WAVES 1 TO 3 FT.
.TUESDAY...NORTHEAST WINDS 10 TO 15 KT. CHANCE OF SHOWERS IN THE
AFTERNOON. WAVES 1 TO 2 FT.
.TUESDAY NIGHT...EAST WINDS 10 TO 15 KT. CHANCE OF SHOWERS. WAVES
1 TO 2 FT.
.WEDNESDAY...SOUTHEAST WINDS 10 TO 15 KT DIMINISHING TO 5 TO
10 KT. CHANCE OF SHOWERS IN THE MORNING...THEN CHANCE OF SHOWERS
AND THUNDERSTORMS IN THE AFTERNOON. WAVES 1 TO 2 FT.
.WEDNESDAY NIGHT...SOUTHEAST WINDS 10 TO 15 KT BECOMING SOUTH
10 TO 20 KT. WAVES 1 TO 3 FT.
.THURSDAY...SOUTH WINDS 10 TO 20 KT INCREASING TO 15 TO 25 KT.
WAVES 2 TO 4 FT BUILDING TO 3 TO 5 FT OCCASIONALLY TO 7 FT.
.FRIDAY...SOUTHWEST WINDS 15 TO 25 KT DIMINISHING TO 10 TO 20 KT.
CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES 3 TO 5 FT OCCASIONALLY
TO 7 FT.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-042115-
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-
853 AM CDT MON MAY 4 2015

SHEBOYGAN WI TO PENTWATER MI SOUTH

.REST OF TODAY...WEST WINDS 10 TO 20 KT VEERING TO NORTH 15 TO
25 KT. SCATTERED SHOWERS AND THUNDERSTORMS. AREAS OF FOG THIS
AFTERNOON. WAVES 2 TO 4 FT.
.TONIGHT...NORTH WINDS 10 TO 20 KT BECOMING NORTHEAST 10 TO
15 KT. AREAS OF FOG. CHANCE OF SHOWERS AND SLIGHT CHANCE OF
THUNDERSTORMS. WAVES 2 TO 4 FT.
.TUESDAY...EAST WINDS 10 TO 20 KT BECOMING NORTHEAST 10 TO 15 KT.
SHOWERS LIKELY WITH A CHANCE OF THUNDERSTORMS IN THE MORNING...
THEN CHANCE OF SHOWERS IN THE AFTERNOON. WAVES 1 TO 3 FT.
.TUESDAY NIGHT...EAST WINDS 10 TO 15 KT. CHANCE OF SHOWERS. WAVES
1 TO 3 FT.
.WEDNESDAY...SOUTHEAST WINDS 10 TO 15 KT DIMINISHING TO 5 TO
10 KT. CHANCE OF SHOWERS IN THE MORNING...THEN CHANCE OF SHOWERS
AND THUNDERSTORMS IN THE AFTERNOON. WAVES 1 TO 2 FT.
.WEDNESDAY NIGHT...SOUTHEAST WINDS 10 TO 15 KT INCREASING TO
10 TO 20 KT. WAVES 1 TO 3 FT.
.THURSDAY...SOUTH WINDS 10 TO 20 KT INCREASING TO 15 TO 25 KT.
WAVES 2 TO 4 FT BUILDING TO 3 TO 5 FT OCCASIONALLY TO 7 FT.
.FRIDAY...SOUTH WINDS 10 TO 20 KT. CHANCE OF SHOWERS AND
THUNDERSTORMS. WAVES 2 TO 4 FT.

$$

LMZ761-042115-
MAFOR 0416/
MICHIGAN NORTH 13820 11120 13110 11210. WAVES 2 TO 4 FT THIS
AFTERNOON AND TONIGHT. WAVES 1 TO 3 FT TUESDAY MORNING.

MICHIGAN SOUTH 11723 11833 12823 11113 12116 11226. SCATTERED
SHOWERS AND THUNDERSTORMS THIS AFTERNOON. CHANCE OF SHOWERS LATE
THIS EVENING. CHANCE OF THUNDERSTORMS TUESDAY MORNING. WAVES 2 TO
4 FT BUILDING TO 3 TO 5 FT OCCASIONALLY TO 7 FT THIS AFTERNOON.
WAVES 2 TO 4 FT TONIGHT AND TUESDAY MORNING.

$$


LENNING


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