Great Lakes Forecast
Issued by NWS

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FZUS63 KLOT 311319
GLFLM

OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
819 AM CDT TUE MAR 31 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...LOW PRESSURE OF 29.7 INCHES OVER NORTHERN OHIO WILL
QUICKLY MOVE TO THE MID ATLANTIC BY EARLY THIS EVENING. A WEAK
TROUGH OF LOW PRESSURE AVERAGING 29.9 INCHES WILL LINGER ACROSS
THE CENTRAL LAKES BEFORE A RIDGE OF HIGH PRESSURE OF 30.1 INCHES
MOVES OVER THE LAKE LATE TUESDAY INTO TUESDAY NIGHT. LARGE LOW
PRESSURE NEAR 29.3 INCHES WILL DEVELOP ACROSS SOUTHERN CANADA
WEDNESDAY AFTERNOON AND REACH WESTERN ONTARIO WEDNESDAY NIGHT.
THIS WILL BRING A COLD FRONT ACROSS THE LAKE ON THURSDAY. LOW
PRESSURE OF 29.6 INCHES WILL MOVE UP THE OHIO VALLEY ON FRIDAY.

LMZ261-362-364-366-563-565-567-868-312200-
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-
819 AM CDT TUE MAR 31 2015

SHEBOYGAN WI TO PENTWATER MI NORTH

.REST OF TODAY...NORTHEAST WINDS 10 TO 15 KT BECOMING VARIABLE
AROUND 10 KT. SLIGHT CHANCE OF RAIN OR SNOW THIS AFTERNOON. WAVES
1 TO 3 FT.
.TONIGHT...VARIABLE WINDS AROUND 10 KT BECOMING NORTHEAST 10 TO
15 KT. WAVES 1 TO 3 FT.
.WEDNESDAY...EAST WINDS 5 TO 10 KT BECOMING SOUTHEAST 10 TO
20 KT...THEN INCREASING TO 15 TO 25 KT IN THE AFTERNOON. WAVES 1
TO 3 FT BUILDING TO 3 TO 5 FT OCCASIONALLY TO 7 FT LATE.
.WEDNESDAY NIGHT...SOUTH WINDS 15 TO 25 KT INCREASING TO 30 KT.
CHANCE OF SHOWERS AND THUNDERSTORMS OVERNIGHT. WAVES BUILDING TO
6 TO 9 FT OCCASIONALLY TO 11 FT.
.THURSDAY...SOUTHWEST WINDS 20 TO 25 KT BECOMING WEST 10 TO 20
KT. SHOWERS WITH A CHANCE OF THUNDERSTORMS IN THE MORNING. WAVES
SUBSIDING TO 4 TO 6 FT OCCASIONALLY TO 8 FT.
.THURSDAY NIGHT...WEST WINDS 10 TO 20 KT BECOMING NORTHWEST.
WAVES SUBSIDING TO 2 TO 4 FT.
.FRIDAY...NORTH WINDS 15 TO 25 KT BECOMING WEST 10 TO 15 KT
OVERNIGHT. WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT SUBSIDING TO 1 TO
3 FT OVERNIGHT.
.SATURDAY...SOUTHWEST WINDS 10 TO 20 KT BECOMING WEST 15 TO
25 KT THEN NORTHEAST 10 TO 15 KT OVERNIGHT. WAVES 2 TO 4 FT.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-312200-
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-
819 AM CDT TUE MAR 31 2015

SHEBOYGAN WI TO PENTWATER MI SOUTH

.REST OF TODAY...NORTH WINDS 10 TO 20 KT EASING TO 10 TO 15 KT BY
MIDDAY...THEN BECOMING VARIABLE AROUND 10 KT DURING THE AFTERNOON.
AREAS OF FOG THIS MORNING. WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT
SUBSIDING TO 1 TO 3 FT LATE.
.TONIGHT...SOUTH WINDS 10 TO 15 KT VEERING TO NORTHEAST. WAVES 1
TO 3 FT.
.WEDNESDAY...NORTHEAST WINDS 5 TO 10 KT BECOMING SOUTHEAST...THEN
INCREASING TO 15 TO 25 KT LATE IN THE AFTERNOON. WAVES BUILDING
TO 2 TO 4 FT.
.WEDNESDAY NIGHT...SOUTH WINDS TO 30 KT. CHANCE OF SHOWERS AND
THUNDERSTORMS OVERNIGHT. WAVES BUILDING TO 5 TO 8 FT
OCCASIONALLY TO 10 FT.
.THURSDAY...SOUTHWEST WINDS TO 30 KT BECOMING WEST 10 TO 20 KT.
SHOWERS LIKELY WITH A CHANCE OF THUNDERSTORMS IN THE
MORNING...THEN CHANCE OF SHOWERS AND THUNDERSTORMS IN THE
AFTERNOON. WAVES SUBSIDING TO 4 TO 6 FT OCCASIONALLY TO 8 FT.
.THURSDAY NIGHT...WEST WINDS 10 TO 20 KT BECOMING NORTHWEST.
WAVES 2 TO 4 FT.
.FRIDAY...NORTH WINDS 15 TO 25 KT BECOMING NORTHWEST 10 TO 15 KT
OVERNIGHT. WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT.
.SATURDAY...SOUTHWEST WINDS 15 TO 20 KT. WAVES 3 TO 5 FT
OCCASIONALLY TO 7 FT.

$$
LMZ761-312200-
MAFOR 3116/
MICHIGAN NORTH 11110 13900 11810 12110 11200. WAVES 1 TO 3 FT.

MICHIGAN SOUTH 11820 11810 19900 11910 11410 11510 19610
11810 11110 11100. WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT SUBSIDING
TO 1 TO 3 FT THIS AFTERNOON THROUGH WEDNESDAY MORNING.

$$


KJB


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