Great Lakes Forecast
Issued by NWS

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FZUS63 KLOT 200804
GLFLM

OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
304 AM CDT FRI MAR 20 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...HIGH PRESSURE OF 30.4 INCHES CENTERED OVER NEW ENGLAND
WILL CONTINUE EAST OFF THE COAST BY MIDDAY. A COLD FRONTAL TROUGH
TRAILING FROM A LOW IN NORTHERN CANADA...WILL SHIFT SOUTHWARD
ACROSS LAKE MICHIGAN TONIGHT. AS THE FRONT MOVES SOUTH...A WEAK
LOW PRESSURE WAVE OF 29.9 INCHES WILL RIPPLE ALONG THE FRONT AND
INTO SOUTHWEST ONTARIO. HIGH PRESSURE RIDGING AVERAGING 30.3
INCHES WILL THEN BUILD INTO THE UPPER MIDWEST AND UPPER GREAT
LAKES SATURDAY NIGHT AND SUNDAY AND LINGER INTO EARLY NEXT WEEK.

LMZ261-362-364-366-563-565-567-868-201545-
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-
304 AM CDT FRI MAR 20 2015

SHEBOYGAN WI TO PENTWATER MI NORTH

.TODAY...SOUTH WINDS 15 TO 25 KT BECOMING SOUTHWEST. WAVES 2 TO 4
FT BUILDING TO 3 TO 6 FT OCCASIONALLY TO 8 FT.
.TONIGHT...SOUTHWEST WINDS 10 TO 20 KT VEERING TO NORTH 15 TO
25 KT. RAIN OR SNOW LIKELY IN THE EVENING...THEN SLIGHT CHANCE OF
RAIN OR SNOW OVERNIGHT. WAVES 3 TO 6 FT OCCASIONALLY TO 8 FT.
.SATURDAY...NORTH WINDS 15 TO 25 KT DIMINISHING TO 10 TO 20 KT.
WAVES 2 TO 4 FT.
.SATURDAY NIGHT...NORTHEAST WINDS 10 TO 20 KT BECOMING NORTH.
WAVES 2 TO 4 FT.
.SUNDAY...NORTH WINDS 10 TO 20 KT DIMINISHING TO 10 TO 15 KT.
WAVES 2 TO 4 FT.
.SUNDAY NIGHT...NORTHEAST WINDS 10 TO 15 KT. WAVES 2 TO 4 FT.
.MONDAY...NORTHEAST WINDS 10 TO 15 KT. WAVES 1 TO 3 FT.
.TUESDAY...SOUTH WINDS 10 TO 15 KT INCREASING TO 10 TO 20 KT.
WAVES 2 TO 4 FT.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-201545-
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-
304 AM CDT FRI MAR 20 2015

SHEBOYGAN WI TO PENTWATER MI SOUTH

.TODAY...SOUTH WINDS 10 TO 20 KT BECOMING SOUTHWEST 15 TO 20 KT.
WAVES 2 TO 4 FT.
.TONIGHT...SOUTHWEST WINDS 15 TO 20 KT BECOMING NORTH 20 TO 25 KT
LATE. WAVES 2 TO 4 FT.
.SATURDAY...NORTH WINDS 20 TO 25 KT BECOMING NORTHEAST 10 TO 20
KT IN THE AFTERNOON. WAVES BUILDING TO 4 TO 7 FT OCCASIONALLY TO
9 FT.
.SATURDAY NIGHT...NORTHEAST WINDS 15 TO 20 KT. WAVES 4 TO 7 FT
OCCASIONALLY TO 9 FT.
.SUNDAY...NORTHEAST WINDS 10 TO 20 KT. WAVES 4 TO 6 FT
OCCASIONALLY TO 8 FT.
.SUNDAY NIGHT...NORTHEAST WINDS 10 TO 20 KT BECOMING EAST. WAVES
4 TO 6 FT OCCASIONALLY TO 8 FT.
.MONDAY...EAST WINDS 10 TO 20 KT BECOMING NORTHEAST. WAVES 3 TO 6
FT OCCASIONALLY TO 8 FT.
.TUESDAY...SOUTHEAST WINDS 10 TO 20 KT. WAVES 3 TO 6 FT
OCCASIONALLY TO 8 FT.

$$

LMZ761-201545-
MAFOR 2010/
MICHIGAN NORTH 11430 13530 11536 11527 11627 11830. CHANCE OF
RAIN OR SNOW TONIGHT. WAVES 2 TO 4 FT BUILDING TO 3 TO 6 FT
OCCASIONALLY TO 8 FT TODAY AND TONIGHT.

MICHIGAN SOUTH 12420 14520 12520 19620. WAVES 2 TO 4 FT.

$$


KJB


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