Great Lakes Forecast
Issued by NWS

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FZUS63 KLOT 210749
GLFLM

OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
249 AM CDT SAT MAR 21 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...AN ELONGATED TROUGH OF LOW PRESSURE OF 29.8 INCHES
AND AN ASSOCIATED COLD FRONT WILL MOVE SOUTH DOWN LAKE MICHIGAN
EARLY THIS MORNING...THEN DEEPEN SLIGHTLY AS IT PIVOTS ACROSS THE
LOWER GREAT LAKES AND ST. LAWRENCE VALLEY THROUGH THE DAY. HIGH
PRESSURE OF 30.6 INCHES WILL SHIFT FROM THE CANADIAN PRAIRIES
SOUTHEAST INTO THE GREAT LAKES FROM SUNDAY THROUGH MONDAY. THE
HIGH WILL THEN STEADILY SHIFT EASTWARD TO THE EASTERN SEABOARD BY
MID WEEK. LOW PRESSURE IS THEN EXPECTED TO MOVE ACROSS THE GREAT
LAKES BY WEDNESDAY.

LMZ261-362-364-366-563-565-567-868-211545-
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-
249 AM CDT SAT MAR 21 2015

SHEBOYGAN WI TO PENTWATER MI NORTH

.TODAY...NORTH WINDS 15 TO 25 KT DIMINISHING TO 10 TO 20 KT AND
BECOMING NORTHEAST. WAVES 3 TO 6 FT OCCASIONALLY TO 8 FT.
.TONIGHT...NORTHEAST WINDS 10 TO 20 KT BECOMING NORTH. WAVES
SUBSIDING TO 2 TO 4 FT.
.SUNDAY...NORTH WINDS 10 TO 15 KT. WAVES 2 TO 4 FT.
.SUNDAY NIGHT...NORTHEAST WINDS 10 TO 15 KT. WAVES 1 TO 3 FT.
.MONDAY...NORTHEAST WINDS 10 TO 15 KT. WAVES 1 TO 3 FT.
.MONDAY NIGHT...EAST WINDS AROUND 10 KT BECOMING SOUTHEAST 10 TO
15 KT. WAVES 1 TO 3 FT.
.TUESDAY...SOUTH WINDS 10 TO 20 KT BECOMING SOUTHEAST. WAVES 1 TO
3 FT BUILDING TO 2 TO 4 FT.
.WEDNESDAY...SOUTHWEST WINDS 15 TO 25 KT BECOMING WEST. RAIN AND
SNOW SHOWERS LIKELY. WAVES 4 TO 6 FT OCCASIONALLY TO 8 FT.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-211545-
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-
249 AM CDT SAT MAR 21 2015

SHEBOYGAN WI TO PENTWATER MI SOUTH

.TODAY...SOUTHWEST WINDS AROUND 20 KT SHIFTING NORTH TO 20 TO 25
KT EARLY THIS MORNING...THEN BECOMING NORTHEAST 10 TO 20 KT IN THE
AFTERNOON. WAVES 4 TO 6 FT OCCASIONALLY TO 8 FT.
.TONIGHT...NORTHEAST WINDS 10 TO 15 KT INCREASING TO 10 TO 20 KT.
WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT.
.SUNDAY...NORTHEAST WINDS 10 TO 20 KT. WAVES 3 TO 5 FT
OCCASIONALLY TO 7 FT.
.SUNDAY NIGHT...NORTHEAST WINDS 10 TO 20 KT. CHANCE OF SNOW IN
THE EVENING...THEN CHANCE OF SNOW AND LIGHT FREEZING RAIN
OVERNIGHT. WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT.
.MONDAY...EAST WINDS 10 TO 20 KT BECOMING NORTHEAST. WAVES 3 TO 5
FT OCCASIONALLY TO 7 FT.
.MONDAY NIGHT...NORTHEAST WINDS 10 TO 20 KT BECOMING SOUTHEAST.
WAVES 2 TO 4 FT.
.TUESDAY...SOUTHEAST WINDS 10 TO 20 KT INCREASING TO 30 KT TUESDAY
NIGHT. WAVES 2 TO 4 FT BUILDING TO 4 TO 7 FT OCCASIONALLY TO 9 FT
TUESDAY NIGHT.
.WEDNESDAY...SOUTHWEST WINDS TO 30 KT BECOMING WEST. CHANCE OF
SHOWERS. WAVES 4 TO 7 FT OCCASIONALLY TO 9 FT.

$$

LMZ761-211545-
MAFOR 2110/
MICHIGAN NORTH 14830 13120 11820. CHANCE OF RAIN OR SNOW EARLY
THIS MORNING. WAVES 3 TO 6 FT OCCASIONALLY TO 8 FT TODAY. WAVES
SUBSIDING TO 2 TO 4 FT TONIGHT.

MICHIGAN SOUTH 10520 11720 13830 11120 12110 11120. WAVES 4 TO 6
FT OCCASIONALLY TO 8 FT TODAY. WAVES 3 TO 5 FT OCCASIONALLY TO 8
FT TONIGHT.

$$


KJB


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