Great Lakes Forecast
Issued by NWS

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000
FZUS63 KLOT 200200
GLFLM

OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
900 PM CDT FRI SEP 19 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...A LARGE AREA OF HIGH PRESSURE OF 30.4 INCHES CENTERED
OVER EASTERN NEW ENGLAND WILL SLIDE OFF THE COAST TONIGHT. A
TROUGH OF LOW PRESSURE AVERAGING 29.5 INCHES OVER HUDSON BAY AND
WESTERN ONTARIO WILL SLIDE EAST TONIGHT WITH A TRAILING FRONTAL
BOUNDARY STRETCHING SOUTH THROUGH THE NORTHERN PLAINS. ANOTHER
LOW PRESSURE AVERAGING 29.5 INCHES IS EXPECTED TO DEVELOP LATE
TONIGHT INTO EARLY SATURDAY ALONG THE FRONT...OVER LAKE SUPERIOR.
THIS LOW WILL THEN LIFT TO THE NORTHEAST ACROSS QUEBEC SATURDAY
AFTERNOON AND EVENING WHILE DRAGGING THE COLD FRONT ACROSS THE
LAKE. ANOTHER LOW AVERAGING 29.6 INCHES WILL FORM ALONG THE
FRONTAL TROUGH OVER LAKE MICHIGAN ON SATURDAY NIGHT AND MOVE INTO
THE EASTERN LAKES ON SUNDAY. MEANWHILE...HIGH PRESSURE OF 30.2
INCHES WILL SPREAD ACROSS THE CENTRAL PLAINS AND WESTERN GREAT
LAKES REGION SUNDAY AND THEN THE OHIO VALLEY ON MONDAY. THE HIGH
WILL SLOWLY SPREAD EASTWARD THROUGH MID WEEK.

LMZ261-362-364-366-563-565-567-669-868-870-200930-
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 SHEBOYGAN TO PORT WASHINGTON 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-
900 PM CDT FRI SEP 19 2014

PORT WASHINGTON WI TO WHITEHALL MI NORTH

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

.REST OF TONIGHT...SOUTHWEST GALES TO 40 KT. CHANCE OF SHOWERS
AND SLIGHT CHANCE OF THUNDERSTORMS THIS EVENING...THEN SHOWERS AND
THUNDERSTORMS LIKELY OVERNIGHT. WAVES 8 TO 12 FT OCCASIONALLY TO
15 FT.
.SATURDAY...SOUTHWEST GALES TO 35 KT DIMINISHING TO 30 KT...THEN
BECOMING WEST 10 TO 20 KT LATE. CHANCE OF SHOWERS AND
THUNDERSTORMS IN THE MORNING...THEN SHOWERS AND THUNDERSTORMS
LIKELY IN THE AFTERNOON. WAVES 8 TO 12 FT OCCASIONALLY TO 15 FT
SUBSIDING TO 5 TO 8 FT OCCASIONALLY TO 10 FT LATE.
.SATURDAY NIGHT...NORTHWEST WINDS 10 TO 20 KT BECOMING NORTHEAST
10 TO 15 KT. CHANCE OF SHOWERS. WAVES SUBSIDING TO 3 TO 5 FT
OCCASIONALLY TO 7 FT FROM LATE EVENING ON.
.SUNDAY...NORTH WINDS 15 TO 25 KT WITH GUSTS TO 30 KT. CHANCE OF
SHOWERS. WAVES 4 TO 7 FT OCCASIONALLY TO 9 FT.
.SUNDAY NIGHT...NORTH WINDS 20 TO 25 KT EASING TO 10 TO 15 KT LATE.
WAVES 4 TO 7 FT OCCASIONALLY TO 9 FT.
.MONDAY...NORTHWEST WINDS 10 TO 15 KT BECOMING WEST 10 TO 20 KT.
WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT SUBSIDING TO 2 TO 4 FT.
.MONDAY NIGHT...WEST WINDS 10 TO 20 KT BECOMING NORTHWEST. WAVES
2 TO 4 FT.
.TUESDAY...NORTH WINDS 10 TO 15 KT BECOMING NORTHEAST. WAVES 2 TO
4 FT.
.WEDNESDAY...SOUTH WINDS 10 TO 15 KT. WAVES 1 TO 2 FT.

$$

LMZ080-671-673-675-777-779-872-874-876-878-200930-
LAKE MICHIGAN FROM MICHIGAN CITY IN TO ST. JOSEPH MI 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 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-
900 PM CDT FRI SEP 19 2014

PORT WASHINGTON WI TO WHITEHALL MI SOUTH

.REST OF TONIGHT...SOUTH WINDS TO 30 KT BECOMING SOUTHWEST. A FEW
GALE FORCE GUSTS TO 35 KT LATE. CHANCE OF SHOWERS AND THUNDERSTORMS
OVERNIGHT. WAVES 4 TO 6 FT OCCASIONALLY TO 8 FT BUILDING TO 6 TO
9 FT OCCASIONALLY TO 11 FT TONIGHT.
.SATURDAY...SOUTHWEST WINDS TO 30 KT EASING TO 15 TO 20 KT LATE.
CHANCE OF SHOWERS AND THUNDERSTORMS IN THE MORNING...THEN SHOWERS
AND THUNDERSTORMS LIKELY IN THE AFTERNOON. WAVES 6 TO 9 FT
OCCASIONALLY TO 11 FT SUBSIDING TO 4 TO 7 FT OCCASIONALLY TO 9 FT
LATE.
.SATURDAY NIGHT...WEST WINDS 10 TO 20 KT INCREASING TO 20 TO 25 KT
LATE. CHANCE OF SHOWERS AND THUNDERSTORMS IN THE EVENING...THEN
SLIGHT CHANCE OF SHOWERS OVERNIGHT. WAVES 4 TO 7 FT OCCASIONALLY
TO 9 FT SUBSIDING TO 3 TO 5 FT OCCASIONALLY TO 7 FT OVERNIGHT.
.SUNDAY...NORTHWEST WINDS TO 30 KT BECOMING NORTH. SLIGHT CHANCE
OF SHOWERS. WAVES BUILDING TO 5 TO 8 FT OCCASIONALLY TO 10 FT.
.SUNDAY NIGHT...NORTH WINDS TO 30 KT EASING TO 10 TO 20 KT. WAVES
5 TO 8 FT OCCASIONALLY TO 10 FT SUBSIDING TO 4 TO 6 FT
OCCASIONALLY TO 8 FT.
.MONDAY...NORTHWEST WINDS 10 TO 15 KT BECOMING WEST. WAVES SUBSIDING
TO 2 TO 4 FT LATE.
.MONDAY NIGHT...WEST WINDS 10 TO 15 KT. WAVES 2 TO 4 FT.
.TUESDAY...NORTHWEST WINDS 10 TO 15 KT BECOMING NORTH. WAVES 1 TO
3 FT.
.WEDNESDAY...SOUTHEAST WINDS 10 TO 15 KT. WAVES 1 TO 2 FT.

$$
LMZ761-200930-
MAFOR 2003/
MICHIGAN NORTH...GALE WARNING IN EFFECT...
14550 12540 11620 11720. CHANCE OF SHOWERS AND THUNDERSTORMS
TONIGHT AND SATURDAY. WAVES 8 TO 12 FT OCCASIONALLY TO 15 FT
OVERNIGHT. WAVES 8 TO 12 FT OCCASIONALLY TO 15 FT SUBSIDING TO 5
TO 8 FT OCCASIONALLY TO 10 FT SATURDAY. WAVES 4 TO 7 FT
OCCASIONALLY TO 9 FT SATURDAY EVENING.

MICHIGAN SOUTH...GALE WARNING IN EFFECT...
11440 14540 19550 11530 11520 11620. CHANCE OF SHOWERS AND
THUNDERSTORMS LATE THIS EVENING AND SATURDAY. WAVES 4 TO 6 FT
OCCASIONALLY TO 8 FT BUILDING TO 6 TO 9 FT OCCASIONALLY TO 11 FT
OVERNIGHT. WAVES 6 TO 9 FT OCCASIONALLY TO 11 FT SUBSIDING TO 4 TO
7 FT OCCASIONALLY TO 9 FT LATE SATURDAY. WAVES 4 TO 7 FT
OCCASIONALLY TO 9 FT SATURDAY EVENING.

$$

RODRIGUEZ




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