Great Lakes Forecast
Issued by NWS

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000
FZUS63 KLOT 201349
GLFLM

OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
849 AM CDT SUN APR 20 2014

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 30.5 INCHES OVER NEW ENGLAND WILL
CONTINUE TO MOVE AWAY TO THE EAST TODAY...WHILE LOW PRESSURE OF
29.7 INCHES MOVES ACROSS FAR NORTHERN ONTARIO. THIS LOW WILL TRAIL
A COLD FRONT SOUTHWEST ACROSS THE UPPER MIDWEST INTO THE CENTRAL
PLAINS BY THIS EVENING...WITH THE FRONT SAGGING ACROSS NORTHERN
LAKE MICHIGAN TONIGHT. ANOTHER AREA OF LOW PRESSURE OF 29.9 INCHES
WILL LIFT NORTHEAST ALONG THE COLD FRONT MONDAY...DEEPENING TO
29.7 INCHES OVER THE CENTRAL AND EASTERN LAKES MONDAY NIGHT AND
DRAGGING THE COLD FRONT SOUTHEAST OF LAKE MICHIGAN. THE LOW WILL
CONTINUE TO DEEPEN AS IT MOVES TO NORTHERN NEW ENGLAND
TUESDAY...WHILE HIGH PRESSURE RIDGING OF 30.1 INCHES BUILDS ACROSS
THE UPPER MIDWEST AND EVENTUALLY INTO THE WESTERN LAKES TUESDAY
NIGHT.

LMZ261-362-364-366-563-565-567-868-202145-
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-
849 AM CDT SUN APR 20 2014

SHEBOYGAN WI TO PENTWATER MI NORTH

.REST OF TODAY...SOUTH WINDS 15 TO 25 KT EASING TO 10 TO 20 KT
TOWARD EVENING. PERIODS OF RAIN. WAVES 4 TO 6 FT OCCASIONALLY TO
8 FT SUBSIDING TO 3 TO 5 FT OCCASIONALLY TO 7 FT LATE.
.TONIGHT...SOUTH WINDS 10 TO 15 KT BECOMING EAST 5 TO 10 KT.
SHOWERS LIKELY. WAVES 2 TO 4 FT SUBSIDING TO 1 TO 3 FT.
.MONDAY...EAST WINDS 5 TO 10 KT BECOMING VARIABLE...THEN BECOMING
NORTHWEST TOWARD EVENING. SHOWERS LIKELY. WAVES 1 TO 2 FT.
.MONDAY NIGHT...NORTHWEST WINDS 10 TO 15 KT INCREASING TO 15 TO 25
KT OVERNIGHT. SLIGHT CHANCE OF SHOWERS IN THE EVENING. WAVES
BUILDING TO 2 TO 4 FT.
.TUESDAY...NORTH WINDS 15 TO 25 KT. WAVES 2 TO 4 FT.
.TUESDAY NIGHT...NORTH WINDS 10 TO 20 KT EASING TO 10 TO 15 KT
OVERNIGHT. WAVES 2 TO 4 FT.
.WEDNESDAY...NORTH WINDS AROUND 10 BECOMING SOUTHEAST IN THE
AFTERNOON AND INCREASING TO 10 TO 20 KT WEDNESDAY NIGHT. WAVES 1
TO 3 FT.
.THURSDAY...SOUTHEAST WINDS TO 30 KT. CHANCE OF SHOWERS. WAVES
BUILDING TO 4 TO 7 FT OCCASIONALLY TO 9 FT.

WAVE FORECAST IS FOR ICE FREE AREAS

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-202145-
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-
849 AM CDT SUN APR 20 2014

SHEBOYGAN WI TO PENTWATER MI SOUTH

.REST OF TODAY...SOUTH WINDS 15 TO 25 KT. WAVES 3 TO 5 FT
OCCASIONALLY TO 7 FT.
.TONIGHT...SOUTH WINDS 10 TO 20 KT. CHANCE OF SHOWERS. WAVES 2 TO
4 FT SUBSIDING TO 1 TO 3 FT.
.MONDAY...SOUTHWEST WINDS 10 TO 20 KT DIMINISHING TO 10 TO 15 KT
AND BECOMING WEST LATE. CHANCE OF SHOWERS IN THE MORNING...THEN
SHOWERS LIKELY WITH A CHANCE OF THUNDERSTORMS IN THE AFTERNOON.
WAVES 1 TO 3 FT.
.MONDAY NIGHT...WEST WINDS 10 TO 20 KT BECOMING NORTH 15 TO 25
KT. CHANCE OF SHOWERS IN THE EVENING. WAVES BUILDING TO 3 TO 6 FT
OCCASIONALLY TO 8 FT.
.TUESDAY...NORTH WINDS 15 TO 25 KT. WAVES 4 TO 6 FT OCCASIONALLY
TO 8 FT.
.TUESDAY NIGHT...NORTH WINDS 10 TO 20 KT DIMINISHING TO 10 TO 15
KT OVERNIGHT. WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT SUBSIDING TO 2
TO 4 FT.
.WEDNESDAY...NORTHEAST WINDS 10 TO 15 KT BECOMING EAST LATE
AFTERNOON...THEN BECOMING SOUTHEAST AND INCREASING TO 15 TO 25 KT
WEDNESDAY NIGHT. WAVES SUBSIDING TO 1 TO 3 FT DURING THE DAY THEN
BUILDING TO 3 TO 5 FT OCCASIONALLY TO 7 FT WEDNESDAY NIGHT.
.THURSDAY...SOUTHEAST WINDS TO 30 KT. CHANCE OF SHOWERS AND
THUNDERSTORMS. WAVES 4 TO 6 FT OCCASIONALLY TO 8 FT.

WAVE FORECAST IS FOR ICE FREE AREAS

$$
LMZ761-202145-
MAFOR 2015/
MICHIGAN NORTH 12436 11426 12416 11316 12206. WAVES 4 TO 6 FT
OCCASIONALLY TO 8 FT SUBSIDING TO 3 TO 5 FT OCCASIONALLY TO 7 FT
THIS AFTERNOON. WAVES SUBSIDING TO 2 TO 4 FT TONIGHT AND TO 1 TO 3
FT MONDAY MORNING.

MICHIGAN SOUTH 13430 14420 11520. CHANCE OF RAIN THIS AFTERNOON
THROUGH MONDAY MORNING. WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT
THIS AFTERNOON...SUBSIDING TO 1 TO 3 FT TONIGHT AND MONDAY
MORNING.

$$

KJB







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