Great Lakes Forecast
Issued by NWS

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FZUS63 KLOT 242047
GLFLM

OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
347 PM CDT TUE MAR 24 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 OVER THE EASTERN GREAT
LAKES WILL SHIFT EAST TOWARDS NEW ENGLAND TONIGHT...WHILE TWO
SEPARATE LOW PRESSURE SYSTEMS MOVE EAST THROUGH THE PLAINS. THE
FIRST LOW OF 29.6 INCHES OVER THE NORTHERN PLAINS WILL MOVE EAST
THROUGH THE UPPER MIDWEST WHILE A SECOND LOW PRESSURE SYSTEM OF
29.7 INCHES OVER THE CENTRAL PLAINS LIFTS NORTHEAST TO SOUTHERN
LAKE MICHIGAN. THESE TWO LOW PRESSURE SYSTEMS WILL MERGE TOGETHER
WEDNESDAY AND THEN MOVE NORTHEAST TO QUEBEC WEDNESDAY NIGHT.
ANOTHER AREA OF LOW PRESSURE OF 29.7 INCHES OVER THE SOUTHERN
PLAINS WILL LIFT NORTHEAST THROUGH THE MID MISSISSIPPI AND OHIO
VALLEYS WEDNESDAY NIGHT INTO THURSDAY...AND THEN TO NEW ENGLAND
THURSDAY EVENING. HIGH PRESSURE OF 30.5 INCHES WILL THEN MOVE FROM
CENTRAL CANADA TO THE WESTERN GREAT LAKES THROUGH LATE WEEK.

LMZ261-362-364-366-563-565-567-868-250315-
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-
347 PM CDT TUE MAR 24 2015

SHEBOYGAN WI TO PENTWATER MI NORTH

.TONIGHT...SOUTHEAST WINDS 10 TO 15 KT BECOMING EAST 10 TO 20
KT THIS EVENING...THEN INCREASING TO 15 TO 25 KT. SLIGHT CHANCE
OF FREEZING RAIN THIS EVENING...THEN SNOW...RAIN AND FREEZING RAIN
OVERNIGHT. WAVES 2 TO 4 FT BUILDING TO 4 TO 6 FT OCCASIONALLY TO 8
FT.
.WEDNESDAY...SOUTHEAST WINDS 15 TO 25 KT BECOMING SOUTH LATE IN
THE MORNING...THEN BECOMING SOUTHWEST TO 30 KT IN THE AFTERNOON.
RAIN IN THE MORNING. WAVES 4 TO 6 FT OCCASIONALLY TO 8 FT.
.WEDNESDAY NIGHT...SOUTHWEST WINDS TO 30 KT DIMINISHING TO 15 TO
25 KT LATE IN THE EVENING...THEN BECOMING NORTHWEST 10 TO 20 KT
LATE. WAVES 4 TO 6 FT OCCASIONALLY TO 8 FT.
.THURSDAY...NORTH WINDS 15 TO 25 KT INCREASING TO 30 KT. CHANCE
OF RAIN AND SNOW SHOWERS. WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT
BUILDING TO 5 TO 8 FT OCCASIONALLY TO 10 FT.
.THURSDAY NIGHT...NORTH WINDS TO 30 KT. WAVES 7 TO 10 FT
OCCASIONALLY TO 13 FT.
.FRIDAY...NORTH WINDS TO 30 KT DIMINISHING TO 15 TO 25 KT. WAVES
7 TO 10 FT OCCASIONALLY TO 13 FT.
.FRIDAY NIGHT...NORTH WINDS 10 TO 20 KT DIMINISHING TO 10 TO
15 KT. WAVES 4 TO 7 FT OCCASIONALLY TO 9 FT SUBSIDING TO 3 TO
5 FT OCCASIONALLY TO 7 FT.
.SATURDAY...NORTHWEST WINDS 5 TO 10 KT BECOMING SOUTHWEST 10 TO
20 KT IN THE AFTERNOON. WAVES 2 TO 4 FT.
.SUNDAY...SOUTHWEST GALES TO 35 KT DIMINISHING TO 30 KT IN THE
AFTERNOON. RAIN OR SNOW LIKELY. WAVES 8 TO 11 FT OCCASIONALLY TO
14 FT.

WAVE FORECAST IS FOR ICE FREE AREAS

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-250315-
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-
347 PM CDT TUE MAR 24 2015

SHEBOYGAN WI TO PENTWATER MI SOUTH

.TONIGHT...SOUTHEAST WINDS 10 TO 20 KT INCREASING TO 30 KT THIS
EVENING...THEN BECOMING SOUTH 15 TO 25 KT LATE. A FEW GALE FORCE
GUSTS TO 35 KT. CHANCE OF RAIN THIS EVENING...THEN RAIN AND
SLIGHT CHANCE OF THUNDERSTORMS OVERNIGHT. WAVES 2 TO 4 FT BUILDING
TO 6 TO 9 FT OCCASIONALLY TO 11 FT.
.WEDNESDAY...SOUTHWEST WINDS 10 TO 20 KT BECOMING WEST 15 TO
25 KT. CHANCE OF RAIN IN THE MORNING...THEN SLIGHT CHANCE OF RAIN
IN THE AFTERNOON. WAVES 5 TO 8 FT OCCASIONALLY TO 10 FT SUBSIDING
TO 3 TO 5 FT OCCASIONALLY TO 7 FT.
.WEDNESDAY NIGHT...WEST WINDS 10 TO 20 KT BECOMING NORTHWEST
15 TO 25 KT. WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT.
.THURSDAY...NORTHWEST WINDS 15 TO 25 KT BECOMING NORTH TO 30 KT.
CHANCE OF SHOWERS. WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT BUILDING
TO 4 TO 7 FT OCCASIONALLY TO 9 FT.
.THURSDAY NIGHT...NORTH WINDS TO 30 KT. CHANCE OF SNOW AND
SHOWERS IN THE EVENING...THEN CHANCE OF SNOW SHOWERS OVERNIGHT.
WAVES BUILDING TO 7 TO 10 FT OCCASIONALLY TO 13 FT.
.FRIDAY...NORTH WINDS TO 30 KT DIMINISHING TO 15 TO 25 KT. WAVES
7 TO 10 FT OCCASIONALLY TO 13 FT.
.FRIDAY NIGHT...NORTH WINDS 10 TO 20 KT DIMINISHING TO 10 TO
15 KT. WAVES 5 TO 8 FT OCCASIONALLY TO 10 FT SUBSIDING TO 4 TO
7 FT OCCASIONALLY TO 9 FT.
.SATURDAY...NORTH WINDS 10 TO 15 KT BACKING TO SOUTHWEST. WAVES
3 TO 5 FT OCCASIONALLY TO 7 FT SUBSIDING TO 1 TO 3 FT.
.SUNDAY...SOUTHWEST GALES TO 35 KT DIMINISHING TO 30 KT IN THE
AFTERNOON. CHANCE OF RAIN OR SNOW. WAVES 8 TO 11 FT OCCASIONALLY
TO 14 FT.

WAVE FORECAST IS FOR ICE FREE AREAS

$$
LMZ761-250315-
MAFOR 2422/
MICHIGAN NORTH 11310 12220 12237 11336 11436 11530. WAVES 2 TO 4
FT BUILDING TO 4 TO 6 FT OCCASIONALLY TO 8 FT TONIGHT AND
WEDNESDAY.

MICHIGAN SOUTH 11320 11330 12346 11436 12520 11630. CHANCE OF
RAIN EARLY THIS EVENING AND WEDNESDAY. WAVES 2 TO 4 FT BUILDING TO
6 TO 9 FT OCCASIONALLY TO 11 FT TONIGHT. WAVES 5 TO 8 FT
OCCASIONALLY TO 10 FT SUBSIDING TO 3 TO 5 FT OCCASIONALLY TO 7 FT.

$$


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