Great Lakes Forecast
Issued by NWS

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000
FZUS63 KLOT 291947
GLFLM

OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
247 PM CDT FRI MAY 29 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...LOW PRESSURE OF 29.8 INCHES OVER ONTARIO WILL
STRENGTHEN TO 29.5 INCHES AS IT MOVES NORTHEAST TO NOVA SCOTIA BY
SATURDAY NIGHT. A STRONG COLD FRONT TRAILING FROM SOUTHWEST OF
THIS LOW WILL TRACK SOUTH ACROSS THE LAKE LATER TONIGHT INTO
EARLY SATURDAY MORNING. STRONG HIGH PRESSURE OF 30.5 INCHES OVER
CENTRAL MANITOBA WILL BUILD SOUTH INTO THE PLAINS AND WESTERN
GREAT LAKES REGION IN THE WAKE OF THIS COLD FRONT THIS WEEKEND.
THE CENTER OF THE HIGH WILL MOVE EAST ACROSS ONTARIO AND INTO
QUEBEC THIS WEEKEND WITH RIDGING EXTENDING SOUTH ACROSS THE GREAT
LAKES REGION. WEAKER HIGH PRESSURE OF 30.2 INCHES WILL REMAIN
ANCHORED OVER THE GREAT LAKES REGION INTO NEXT WEEK.

LMZ261-362-364-366-563-565-567-868-300400-
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-
247 PM CDT FRI MAY 29 2015

SHEBOYGAN WI TO PENTWATER MI NORTH

.TONIGHT...SOUTH WINDS 10 TO 20 KT BECOMING SOUTHWEST 10 TO 15 KT
LATE THIS EVENING...THEN SHIFTING TO NORTH AND INCREASING TO 15 TO
25 KT LATE. SHOWERS LIKELY. WAVES 1 TO 3 FT BUILDING TO 2 TO 4
FT.
.SATURDAY...NORTH WINDS 15 TO 25 KT. CHANCE OF SHOWERS IN THE
MORNING. WAVES 3 TO 6 FT OCCASIONALLY TO 8 FT BUILDING TO 4 TO 7
FT OCCASIONALLY TO 9 FT.
.SATURDAY NIGHT AND SUNDAY...NORTHEAST WINDS 15 TO 25 KT. WAVES 4
TO 7 FT OCCASIONALLY TO 9 FT.
.SUNDAY NIGHT...NORTHEAST WINDS 15 TO 25 KT DIMINISHING TO 10 TO
15 KT OVERNIGHT. WAVES SUBSIDING TO 2 TO 4 FT.
.MONDAY...NORTHEAST WINDS 10 TO 15 KT. WAVES 1 TO 3 FT.
.MONDAY NIGHT...EAST WINDS 10 TO 15 KT BECOMING SOUTHEAST 5 TO
10 KT. WAVES 1 TO 2 FT.
.TUESDAY...SOUTHEAST WINDS 5 TO 10 KT. WAVES 1 TO 2 FT.
.WEDNESDAY...SOUTH WINDS 10 TO 15 KT INCREASING TO 10 TO 20 KT.
WAVES 1 FT OR LESS.

$$

LMZ669-671-673-675-870-872-874-876-300400-
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 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-
247 PM CDT FRI MAY 29 2015

SHEBOYGAN WI TO PENTWATER MI SOUTH TO WINTHROP HARBOR IL TO SOUTH
HAVEN MI

.TONIGHT...SOUTH WINDS 10 TO 20 KT VEERING TO SOUTHWEST THIS
EVENING...THEN SHIFTING TO NORTH AND INCREASING TO 30 KT TOWARD
MORNING. SHOWERS LIKELY WITH SLIGHT CHANCE OF THUNDERSTORMS
OVERNIGHT. WAVES 1 TO 3 FT.
.SATURDAY...NORTH WINDS TO 30 KT...A FEW GALE FORCE GUSTS TO 35
KT POSSIBLE. SHOWERS LIKELY...MAINLY IN THE MORNING. WAVES 4 TO 6
FT OCCASIONALLY TO 8 FT BUILDING TO 8 TO 11 FT OCCASIONALLY TO 14
FT.
.SATURDAY NIGHT...NORTH WINDS TO 30 KT BECOMING NORTHEAST 15 TO 25
KT. CHANCE OF RAIN IN THE EVENING. WAVES 8 TO 11 FT OCCASIONALLY
TO 14 FT SUBSIDING TO 6 TO 9 FT OCCASIONALLY TO 11 FT.
.SUNDAY...NORTHEAST WINDS 15 TO 25 KT BECOMING. WAVES SUBSIDING
TO 4 TO 7 FT OCCASIONALLY TO 9 FT.
.SUNDAY NIGHT...NORTHEAST WINDS 15 TO 25 KT DIMINISHING TO 10 TO
20 KT. WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT SUBSIDING TO 2 TO
4 FT.
.MONDAY...NORTHEAST WINDS 10 TO 20 KT BECOMING NORTH. WAVES 2 TO
4 FT.
.MONDAY NIGHT...NORTHEAST WINDS 10 TO 20 KT BECOMING EAST 10 TO
15 KT. WAVES 1 TO 3 FT.
.TUESDAY...SOUTHEAST WINDS 5 TO 10 KT BECOMING EAST. WAVES 1 FT
OR LESS.
.WEDNESDAY...SOUTH WINDS 10 TO 15 KT. WAVES 1 FT OR LESS.

$$

LMZ080-777-779-878-300400-
LAKE MICHIGAN FROM MICHIGAN CITY IN TO ST. JOSEPH MI 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 ST. JOSEPH TO SOUTH HAVEN MI 5 NM OFFSHORE TO
MID LAKE-
247 PM CDT FRI MAY 29 2015

WINTHROP HARBOR IL TO SOUTH HAVEN MI SOUTH

...GALE WARNING IN EFFECT FROM SATURDAY MORNING THROUGH SATURDAY
EVENING...

.TONIGHT...SOUTH WINDS 10 TO 15 KT INCREASING TO 10 TO 20 KT.
CHANCE OF SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS. WAVES 1 TO
3 FT.
.SATURDAY...SOUTHWEST WINDS 10 TO 15 KT SHIFTING TO NORTH GALES TO
35 KT IN THE MORNING. SHOWERS LIKELY. WAVES 1 TO 2 FT QUICKLY
BUILDING TO 8 TO 12 FT OCCASIONALLY TO 15 FT.
.SATURDAY NIGHT...NORTH GALES TO 35 KT BECOMING NORTHEAST TO
30 KT. CHANCE OF RAIN IN THE EVENING. WAVES 8 TO 12 FT
OCCASIONALLY TO 15 FT.
.SUNDAY...NORTHEAST WINDS TO 30 KT BECOMING NORTH. WAVES 6 TO 9
FT OCCASIONALLY TO 11 FT.
.SUNDAY NIGHT...NORTHEAST WINDS 15 TO 25 KT DIMINISHING TO 10 TO
20 KT. WAVES 4 TO 7 FT OCCASIONALLY TO 9 FT.
.MONDAY...NORTHEAST WINDS 10 TO 20 KT BECOMING NORTH. WAVES 3 TO
5 FT OCCASIONALLY TO 7 FT.
.MONDAY NIGHT...NORTHEAST WINDS 10 TO 20 KT BECOMING EAST 10 TO
15 KT. WAVES 2 TO 4 FT.
.TUESDAY...EAST WINDS 5 TO 10 KT BECOMING NORTHEAST. WAVES 1 TO
2 FT.
.WEDNESDAY...SOUTHEAST WINDS 5 TO 10 KT BECOMING EAST. WAVES 1 FT
OR LESS.

$$

LMZ761-300400-
MAFOR 2922/
MICHIGAN NORTH 12426 12516 14830 19840. WAVES 1 TO 3 FT BUILDING
TO 2 TO 4 FT LATE TONIGHT...THEN BUILDING TO 4 TO 7 FT
OCCASIONALLY TO 9 FT SATURDAY.

MICHIGAN CENTRAL 12426 12526 14840 19850. WAVES 1 TO 3 FT RAPIDLY
BUILDING TO 8 TO 11 FT OCCASIONALLY TO 14 FT SATURDAY MORNING.

MICHIGAN FAR SOUTH...GALE WARNING IN EFFECT...
11410 14420 11510 19846 12856. WAVES 1 TO 3 FT TONIGHT QUICKLY
BUILDING TO 8 TO 12 FT OCCASIONALLY TO 15 FT SATURDAY MORNING.

$$

IZZI



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