Great Lakes Forecast
Issued by NWS

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000
FZUS63 KLOT 181934
GLFLM

OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
234 PM CDT FRI APR 18 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 30.4 INCHES...CENTERED OVER ONTARIO
AND THE UPPER GREAT LAKES THIS AFTERNOON...WILL CONTINUE EASTWARD
ACROSS THE EASTERN LAKES REGION BY SATURDAY MORNING. FARTHER
WEST...LOW PRESSURE OF 29.5 INCHES ACROSS THE NORTHERN HIGH
PLAINS...WILL MOVE ACROSS SOUTHERN MANITOBA SATURDAY
AFTERNOON...THEN CONTINUE EASTWARD TO NEAR JAMES BAY...WHILE
WEAKENING TO 29.8 INCHES...BY SUNDAY EVENING. THIS LOW WILL STEER
A COLD FRONT ACROSS THE NORTHERN HALF OF THE LAKE...WHICH WILL
STALL THROUGH MONDAY MORNING. A SECOND LOW PRESSURE OF 29.7 INCHES
WILL MOVE ACROSS THE SOUTHERN GREAT LAKES ON MONDAY AFTERNOON
GUIDING THE FRONT EASTWARD AND TURNING WINDS NORTHERLY ACROSS THE
LAKE.

LMZ261-362-364-366-563-565-567-868-190400-
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-
234 PM CDT FRI APR 18 2014

SHEBOYGAN WI TO PENTWATER MI NORTH

.TONIGHT...NORTHWEST WINDS 5 TO 10 KT...BECOMING NORTHEAST 10 TO 15
KT THIS EVENING...THEN EAST LATE. WAVES 1 TO 2 FT.
.SATURDAY...SOUTHEAST WINDS 10 TO 20 KT. SLIGHT CHANCE OF SHOWERS
IN THE AFTERNOON. WAVES 1 TO 3 FT.
.SATURDAY NIGHT...SOUTH WINDS 20 TO 25 KT. CHANCE OF SHOWERS IN
THE EVENING...THEN SHOWERS OVERNIGHT. WAVES BUILDING TO 5 TO 8 FT
OCCASIONALLY TO 10 FT.
.SUNDAY...SOUTHWEST WINDS 15 TO 25 KT EASING TO 10 TO 20 KT IN THE
AFTERNOON. SHOWERS LIKELY. WAVES 5 TO 8 FT OCCASIONALLY TO 10 FT
SUBSIDING TO 2 TO 4 FT LATE.
.SUNDAY NIGHT...SOUTH WINDS 10 TO 15 KT BACKING TO NORTHEAST.
SHOWERS LIKELY IN THE EVENING...THEN CHANCE OF SHOWERS OVERNIGHT.
WAVES SUBSIDING TO 1 TO 3 FT.
.MONDAY...EAST WINDS 10 TO 15 KT BECOMING NORTH. CHANCE OF
SHOWERS. WAVES 1 TO 3 FT.
.MONDAY NIGHT...NORTH WINDS 10 TO 20 KT. SLIGHT CHANCE OF
SHOWERS. WAVES 2 TO 4 FT.
.TUESDAY...NORTH WINDS 15 TO 20 KT. WAVES 2 TO 4 FT.
.WEDNESDAY...NORTH WINDS 10 TO 15 KT BECOMING NORTHEAST. WAVES
1 TO 3 FT.

WAVE FORECAST IS FOR ICE FREE AREAS

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-190400-
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-
234 PM CDT FRI APR 18 2014

SHEBOYGAN WI TO PENTWATER MI SOUTH

.TONIGHT...NORTHEAST WINDS 15 TO 20 KT BECOMING EAST 10 TO 20 KT
AFTER MIDNIGHT. WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT.
.SATURDAY...SOUTHEAST WINDS 10 TO 20 KT. WAVES SUBSIDING TO 2 TO
3 FT.
.SATURDAY NIGHT...SOUTHEAST WINDS 20 TO 25 KT BECOMING SOUTH.
WAVES BUILDING TO 3 TO 6 FT OCCASIONALLY TO 8 FT.
.SUNDAY...SOUTH WINDS 15 TO 25 KT. CHANCE OF SHOWERS. WAVES 3 TO
5 FT OCCASIONALLY TO 7 FT.
.SUNDAY NIGHT...SOUTH WINDS 10 TO 20 KT. CHANCE OF SHOWERS IN THE
EVENING...THEN SLIGHT CHANCE OF SHOWERS OVERNIGHT. WAVES 2 TO
4 FT.
.MONDAY...SOUTHWEST WINDS 10 TO 15 KT BECOMING WEST. SHOWERS
LIKELY. WAVES 1 TO 3 FT.
.MONDAY NIGHT...NORTH WINDS 10 TO 20 KT. CHANCE OF SHOWERS. WAVES
1 TO 3 FT.
.TUESDAY...NORTH WINDS 15 TO 20 KT. WAVES BUILDING TO 3 TO 5 FT
OCCASIONALLY TO 7 FT.
.WEDNESDAY...NORTHEAST WINDS 10 TO 20 KT. WAVES 2 TO 4 FT.

WAVE FORECAST IS FOR ICE FREE AREAS

$$

LMZ761-190400-
MAFOR 1821/
MICHIGAN NORTH 11700 19800 13110 12210 12320. WAVES 1 TO 3 FT.

MICHIGAN SOUTH 13120 12220 13320. WAVES 3 TO 5 FT OCCASIONALLY TO
7 FT TONIGHT SUBSIDING TO 2 TO 3 FT SATURDAY.

$$

KJB





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