Great Lakes Forecast
Issued by NWS

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000
FZUS63 KLOT 301346
GLFLM

OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
846 AM CDT THU OCT 30 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 30.2 INCHES OVER THE OHIO RIVER
VALLEY WILL MOVE EAST AND WEAKEN THROUGH THE AFTERNOON. LOW
PRESSURE OF 30.0 INCHES OVER THE UPPER GREAT LAKES WILL DEEPEN
SLIGHTLY TO 29.8 INCHES AS IT MOVES SOUTHEAST AND MERGES WITH A
COASTAL LOW OFF THE MID ATLANTIC COAST FRIDAY. MEANWHILE...HIGH
PRESSURE OF 30.4 INCHES OVER SASKATCHEWAN THIS MORNING WILL
STRENGTHEN TO NEARLY 30.7 INCHES AS IT MOVES SOUTHEAST INTO THE
NORTHERN PLAINS AND UPPER MISSISSIPPI VALLEY TONIGHT INTO FRIDAY
MORNING. THIS HIGH WILL THEN MOVE INTO THE WESTERN LAKES REGION
SATURDAY AFTERNOON WEAKENING TO 30.4 INCHES ALONG THE WAY. THE
HIGH WILL THEN CONTINUE SOUTHEAST TO THE EASTERN SEABOARD BY
MONDAY AS NEW LOW PRESSURE ORGANIZES OVER THE NORTHERN PLAINS.

LMZ261-362-364-366-563-565-567-868-302200-
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-
846 AM CDT THU OCT 30 2014

SHEBOYGAN WI TO PENTWATER MI NORTH

...GALE WARNING IN EFFECT FROM LATE TONIGHT THROUGH FRIDAY
EVENING...

.REST OF TODAY...SOUTHWEST WINDS 10 TO 15 KT BECOMING WEST IN THE
EARLY AFTERNOON AND THEN INCREASING TO 10 TO 20 KT LATE. CHANCE OF
SHOWERS. WAVES 1 TO 3 FT.
.TONIGHT...NORTHWEST WINDS 15 TO 25 KT BECOMING NORTH GALES TO 45
KT OVERNIGHT. SHOWERS. WAVES 1 TO 3 FT BUILDING TO 7 TO 10 FT
OCCASIONALLY TO 13 FT OVERNIGHT.
.FRIDAY...NORTH GALES TO 45 KT. A FEW STORM FORCE GUSTS TO 50 KT
IN THE MORNING. RAIN AND SNOW SHOWERS. ISOLATED THUNDERSTORMS IN
THE MORNING. WAVES BUILDING 14 TO 18 FT OCCASIONALLY TO 23 FT.
.FRIDAY NIGHT...NORTH GALES TO 40 KT BECOMING NORTHEAST WINDS TO
30 KT. CHANCE OF RAIN AND SNOW SHOWERS. WAVES 10 TO 14 FT
OCCASIONALLY TO 18 FT SUBSIDING TO 10 TO 14 FT OCCASIONALLY
TO 18 FT OVERNIGHT.
.SATURDAY...NORTHEAST WINDS 15 TO 25 KT DIMINISHING TO 10 TO
15 KT IN THE AFTERNOON. WAVES SUBSIDING TO 4 TO 7 FT OCCASIONALLY
TO 9 FT.
.SATURDAY NIGHT...EAST WINDS 5 TO 10 KT VEERING TO SOUTHWEST
10 TO 20 KT OVERNIGHT. WAVES 2 TO 4 FT.
.SUNDAY...SOUTHWEST WINDS 15 TO 25 KT. WAVES BUILDING TO 4 TO 6 FT
OCCASIONALLY TO 8 FT IN THE AFTERNOON.
.MONDAY...SOUTHWEST WINDS TO 30 KT. SLIGHT CHANCE OF SHOWERS.
WAVES 4 TO 7 FT OCCASIONALLY TO 9 FT.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-302200-
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-
846 AM CDT THU OCT 30 2014

SHEBOYGAN WI TO PENTWATER MI SOUTH

...STORM WARNING IN EFFECT FROM FRIDAY MORNING THROUGH FRIDAY
EVENING...
...GALE WARNING IN EFFECT FROM FRIDAY EVENING THROUGH LATE FRIDAY
NIGHT...

.REST OF TODAY...SOUTHWEST WINDS 10 TO 20 KT DIMINISHING TO 10 TO
15 KT IN THE MID AFTERNOON. WAVES 1 TO 3 FT.
.TONIGHT...WEST WINDS 10 TO 20 KT EARLY BECOMING NORTHWEST GALES
TO 45 KT LATE. CHANCE OF SHOWERS. WAVES BUILDING TO 5 TO 8 FT
OCCASIONALLY TO 10 FT LATE.
.FRIDAY...NORTH STORM FORCE WINDS TO 50 KT. RAIN AND SNOW SHOWERS.
ISOLATED THUNDERSTORMS. WAVES BUILDING TO 18 TO 23 FT OCCASIONALLY
TO 28 FT BY LATE MORNING.
.FRIDAY NIGHT...NORTH GALES TO 45 KT GRADUALLY DIMINISHING TO 30
KT BY DAYBREAK. CHANCE OF RAIN AND SNOW SHOWERS...MAINLY IN THE
EVENING. WAVES GRADUALLY SUBSIDING TO 12 TO 16 FT OCCASIONALLY TO
20 FT.
.SATURDAY...NORTHEAST WINDS TO 30 KT DIMINISHING TO 10 TO 20 KT
IN THE AFTERNOON. WAVES SUBSIDING TO 6 TO 9 FT OCCASIONALLY TO 12
FT.
.SATURDAY NIGHT...NORTHEAST WINDS 10 TO 15 KT VEERING TO
SOUTHEAST. WAVES 4 TO 7 FT OCCASIONALLY TO 9 FT SUBSIDING TO 2 TO
4 FT OVERNIGHT.
.SUNDAY...SOUTH WINDS 15 TO 25 KT. WAVES 1 TO 3 FT BUILDING TO
2 TO 4 FT IN THE AFTERNOON.
.MONDAY...SOUTH WINDS TO 30 KT. CHANCE OF SHOWERS. WAVES 4 TO
7 FT OCCASIONALLY TO 9 FT.

$$

&&STORM

LMZ761-302200-
MAFOR 3015/
MICHIGAN NORTH...GALE WARNING IN EFFECT...
11510 11610 11620 11736 11746 11856 11866 11867 19877. CHANCE OF
SHOWERS TODAY. WAVES 1 TO 3 FT THIS AFTERNOON. WAVES BUILDING TO
7 TO 10 FT OCCASIONALLY TO 13 FT THROUGH TONIGHT. WAVES BUILDING
14 TO 18 FT OCCASIONALLY TO 23 FT FRIDAY MORNING.

MICHIGAN SOUTH...STORM WARNING IN EFFECT...
12520 11510 11620 11730 11740 11760 11877. CHANCE OF SHOWERS
TONIGHT. WAVES 1 TO 3 FT TODAY. WAVES BUILDING TO 5 TO 8 FT
OCCASIONALLY TO 10 FT BY LATE TONIGHT. WAVES BUILDING TO 12 TO 16
FT OCCASIONALLY TO 20 FT BY EARLY FRIDAY MORNING.

$$

MTF







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