Great Lakes Forecast
Issued by NWS

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FZUS63 KLOT 121957
GLFLM

OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
257 PM CDT SAT APR 12 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...LOW PRESSURE OF 29.6 INCHES OVER THE PLAINS...WILL MOVE
EAST ACROSS CENTRAL LAKE MICHIGAN LATE TONIGHT. A COLD FRONT
TRAILING BEHIND THIS LOW WILL BE DRAPED ACROSS THE SOUTHERN PART
OF THE LAKE ON SUNDAY. A SECOND LOW AT 29.5 INCHES WILL THEN MOVE
ALONG THIS FRONT...FROM EASTERN KANSAS SUNDAY AFTERNOON TO
SOUTHERN LAKE MICHIGAN BY LATE SUNDAY NIGHT. THIS LOW WILL THEN
CONTINUE TO MOVE NORTHEAST TO WESTERN QUEBEC BY MONDAY EVENING. A
STRONG PRESSURE GRADIENT BEHIND THIS LOW MAY RESULT IN A PERIOD OF
NORTHERLY GALES ACROSS THE LAKE SUNDAY NIGHT INTO MONDAY. HIGH
PRESSURE OF 30.2 INCHES WILL THEN BUILD OVER THE LAKE LATE TUESDAY
INTO EARLY WEDNESDAY.

LMZ261-362-364-563-130345-
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 ROCK ISLAND PASSAGE TO STURGEON BAY WI-
257 PM CDT SAT APR 12 2014

STURGEON BAY WI TO POINT BETSIE MI NORTH

...GALE WATCH IN EFFECT FROM SUNDAY EVENING THROUGH MONDAY
AFTERNOON...

.TONIGHT...EAST WINDS 15 TO 25 KT BECOMING NORTHEAST OVERNIGHT.
SHOWERS. WAVES 4 TO 6 FT OCCASIONALLY TO 8 FT.
.SUNDAY...NORTH WINDS 15 TO 25 KT. CHANCE OF SHOWERS IN THE
MORNING...THEN SHOWERS IN THE AFTERNOON. WAVES 3 TO 5 FT
OCCASIONALLY TO 7 FT.
.SUNDAY NIGHT...NORTH WINDS TO 30 KT INCREASING TO 35 KT GALES.
SHOWERS IN THE EVENING...THEN SNOW OVERNIGHT. WAVES BUILDING TO 6
TO 9 FT OCCASIONALLY TO 11 FT.
.MONDAY...NORTH GALES TO 35 KT BECOMING NORTHWEST TO 30 KT IN THE
AFTERNOON. SNOW SHOWERS LIKELY IN THE MORNING...THEN SLIGHT
CHANCE OF SNOW SHOWERS IN THE AFTERNOON. WAVES 7 TO 10 FT
OCCASIONALLY TO 13 FT.
.MONDAY NIGHT...NORTHWEST WINDS EASING 15 TO 25 KT. SLIGHT CHANCE
OF SNOW SHOWERS IN THE EVENING...THEN CHANCE OF SNOW SHOWERS
OVERNIGHT. WAVES SUBSIDING TO 4 TO 7 FT OCCASIONALLY TO 9 FT.
.TUESDAY...NORTH WINDS 15 TO 25 KT. WAVES SUBSIDING TO 3 TO 5 FT
OCCASIONALLY TO 7 FT.
.TUESDAY NIGHT...NORTHEAST WINDS 10 TO 15 KT BECOMING EAST. WAVES
1 TO 3 FT.
.WEDNESDAY...SOUTHEAST WINDS 15 TO 25 KT. CHANCE OF RAIN OR SNOW.
WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT.
.THURSDAY...EAST WINDS 15 TO 25 KT. CHANCE OF RAIN. WAVES 3 TO
5 FT OCCASIONALLY TO 7 FT.

WAVE FORECAST IS FOR ICE FREE AREAS

$$

LMZ366-565-567-669-671-868-870-872-130345-
LAKE MICHIGAN FROM POINT BETSIE TO MANISTEE MI 5 NM OFFSHORE TO
MID LAKE-
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 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 PENTWATER TO MANISTEE MI 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-
257 PM CDT SAT APR 12 2014

STURGEON BAY WI TO POINT BETSIE MI SOUTH TO NORTH POINT LIGHT WI
TO GRAND HAVEN MI

...GALE WATCH IN EFFECT FROM SUNDAY EVENING THROUGH MONDAY
AFTERNOON...

.TONIGHT...SOUTHEAST WINDS 10 TO 20 KT BECOMING NORTH OVERNIGHT.
SHOWERS AND THUNDERSTORMS THIS EVENING...THEN THUNDERSTORMS WITH A
CHANCE OF SHOWERS OVERNIGHT. WAVES 2 TO 4 FT BUILDING TO 3 TO 5 FT
OCCASIONALLY TO 7 FT OVERNIGHT.
.SUNDAY...NORTH WINDS 15 TO 25 KT. AREAS OF FOG. THUNDERSTORMS
WITH A CHANCE OF SHOWERS IN THE MORNING...THEN SHOWERS AND
SCATTERED THUNDERSTORMS IN THE AFTERNOON. WAVES 4 TO 6 FT
OCCASIONALLY TO 8 FT.
.SUNDAY NIGHT...NORTH WINDS TO 30 KT INCREASING TO GALES TO 40 KT
LATE. SHOWERS AND SCATTERED THUNDERSTORMS IN THE EVENING...THEN
SHOWERS OVERNIGHT. WAVES 8 TO 12 FT OCCASIONALLY TO 15 FT.
.MONDAY...NORTH GALES TO 40 KT EASING TO 30 KT IN THE AFTERNOON.
SNOW SHOWERS LIKELY WITH SHOWERS IN THE MORNING...THEN SLIGHT
CHANCE OF RAIN AND SNOW SHOWERS IN THE AFTERNOON. WAVES 10 TO 14
FT OCCASIONALLY TO 18 FT.
.MONDAY NIGHT...NORTH WINDS TO 30 KT EASING TO 15 TO 25 KT. SLIGHT
CHANCE OF SNOW SHOWERS. WAVES SUBSIDING TO 5 TO 8 FT OCCASIONALLY
TO 10 FT.
.TUESDAY...NORTH WINDS 15 TO 25 KT BECOMING NORTHEAST 10 TO
20 KT. WAVES 4 TO 7 FT OCCASIONALLY TO 9 FT SUBSIDING TO 3 TO
5 FT OCCASIONALLY TO 7 FT LATE.
.TUESDAY NIGHT...SOUTHEAST WINDS 10 TO 20 KT. WAVES 2 TO 4 FT.
.WEDNESDAY...SOUTHEAST WINDS 15 TO 25 KT. SLIGHT CHANCE OF RAIN
OR SNOW. WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT.
.THURSDAY...SOUTHEAST WINDS 15 TO 25 KT. CHANCE OF RAIN. WAVES
3 TO 5 FT OCCASIONALLY TO 7 FT.

WAVE FORECAST IS FOR ICE FREE AREAS

$$

LMZ080-673-675-777-779-874-876-878-130345-
LAKE MICHIGAN FROM MICHIGAN CITY IN TO ST. JOSEPH MI 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 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-
257 PM CDT SAT APR 12 2014

NORTH POINT LIGHT WI TO GRAND HAVEN MI SOUTH

...GALE WATCH IN EFFECT FROM LATE SUNDAY NIGHT THROUGH MONDAY
AFTERNOON...

.TONIGHT...SOUTH WINDS AROUND 25 KT. CHANCE OF SHOWERS AND
THUNDERSTORMS THIS EVENING...THEN THUNDERSTORMS OVERNIGHT. WAVES 3
TO 5 FT OCCASIONALLY TO 7 FT.
.SUNDAY...SOUTHWEST WINDS 15 TO 25 KT. AREAS OF FOG. THUNDERSTORMS
WITH A CHANCE OF SHOWERS IN THE MORNING...THEN SHOWERS AND
THUNDERSTORMS IN THE AFTERNOON. WAVES 3 TO 5 FT OCCASIONALLY TO 7
FT.
.SUNDAY NIGHT...SOUTHWEST WINDS 15 TO 25 KT VEERING TO NORTH LATE
IN THE EVENING...THEN BECOMING NORTHWEST TO 30 KT AFTER
MIDNIGHT...THEN NORTH GALES TO 35 KT LATE. AREAS OF FOG. SHOWERS
AND SCATTERED THUNDERSTORMS. WAVES 4 TO 6 FT OCCASIONALLY TO 8 FT
BUILDING TO 8 TO 12 FT OCCASIONALLY TO 15 FT.
.MONDAY...NORTH GALES TO 40 KT EASING TO 30 KT IN THE AFTERNOON.
SHOWERS IN THE MORNING...THEN CHANCE OF SHOWERS IN THE AFTERNOON.
WAVES 10 TO 14 FT OCCASIONALLY TO 18 FT.
.MONDAY NIGHT...NORTH WINDS TO 30 KT EASING TO 15 TO 25 KT. CHANCE
OF RAIN AND SNOW SHOWERS IN THE EVENING...THEN SLIGHT CHANCE OF
SNOW SHOWERS OVERNIGHT. WAVES 10 TO 14 FT OCCASIONALLY TO 18 FT
SUBSIDING TO 6 TO 9 FT OCCASIONALLY TO 11 FT LATE.
.TUESDAY...NORTH WINDS 15 TO 25 KT DIMINISHING TO 10 TO 20 KT.
WAVES 5 TO 8 FT OCCASIONALLY TO 10 FT.
.TUESDAY NIGHT...SOUTHEAST WINDS 10 TO 20 KT. WAVES 3 TO 5 FT
OCCASIONALLY TO 7 FT.
.WEDNESDAY...SOUTHEAST WINDS 15 TO 25 KT. SLIGHT CHANCE OF RAIN
OR SNOW. WAVES 2 TO 4 FT.
.THURSDAY...SOUTHEAST WINDS 15 TO 25 KT. SLIGHT CHANCE OF RAIN.
WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT.

WAVE FORECAST IS FOR ICE FREE AREAS

$$

LMZ761-130345-
MAFOR 1221/
MICHIGAN NORTH 14236 11136 13836. RAIN SHOWERS AND SCATTERED
THUNDERSTORMS TONIGHT. WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT.

MICHIGAN SOUTH 11449 14439 12539 11529. WAVES 3 TO 5 FT
OCCASIONALLY TO 7 FT.

$$

KJB






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