Great Lakes Forecast
Issued by NWS

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000
FZUS63 KLOT 201931
GLFLM

OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
231 PM CDT SAT SEP 20 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...AN AREA OF LOW PRESSURE OF 29.5 INCHES OVER
SOUTHERN ONTARIO...WILL LIFT NORTHEAST TO CENTRAL QUEBEC BY
SUNDAY MORNING...WHILE DRAGGING A COLD FRONT DOWN THE LENGTH OF
LAKE MICHIGAN. ANOTHER LOW OF 29.6 INCHES IS EXPECTED TO DEVELOP
ALONG THE FRONT OVER SOUTHERN LOWER MICHIGAN SUNDAY MORNING AND
THEN TRACK EAST...HELPING ENHANCE A NORTHERLY PRESSURE GRADIENT
OVER THE SOUTHERN PORTIONS OF THE LAKE...POSSIBLE HELPING TO
INCREASE WINDS TO GALE FORCE...MAINLY FOR THE SOUTHERN PORTIONS OF
THE LAKE. MEANWHILE...A LARGE...SPRAWLING AREA OF HIGH PRESSURE OF
30.3 INCHES WILL SLIDE OUT OF THE NORTHERN ROCKIES AND INTO THE
CENTRAL PLAINS SUNDAY AND CONTINUE TO SPREAD EAST TO THE WESTERN
GREAT LAKES SUNDAY NIGHT AND MONDAY. THE AREA OF HIGH PRESSURE
WILL GRADUALLY BUILD EAST THROUGH EARLY NEXT WEEK...WITH THE
CENTER OF THE HIGH MOVING JUST SOUTH OF THE LAKE MONDAY NIGHT. BY
TUESDAY...THE CENTER OF THE HIGH WILL MOVE INTO THE EASTERN GREAT
LAKES AND UPPER OHIO VALLEY AS A TROUGH DEVELOPS IN THE FAR
WESTERN GREAT PLAINS. THE TROUGH WILL REMAIN OVER THE WESTERN
PLAINS THROUGH EARLY NEXT WEEK.

LMZ261-362-364-366-563-565-210400-
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-
231 PM CDT SAT SEP 20 2014

TWO RIVERS WI TO MANISTEE MI NORTH

.TONIGHT...WEST WINDS 10 TO 20 KT BECOMING NORTH 15 TO 25 KT.
CHANCE OF SHOWERS AND THUNDERSTORMS THIS EVENING...THEN CHANCE OF
SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS OVERNIGHT. WAVES 4 TO 7
FT OCCASIONALLY TO 9 FT SUBSIDING TO 3 TO 5 FT OCCASIONALLY TO 7
FT FROM LATE EVENING ON.
.SUNDAY...NORTH WINDS 15 TO 25 KT INCREASING TO 30 KT IN THE LATE
MORNING AND AFTERNOON. CHANCE OF SHOWERS IN THE MORNING...THEN
SLIGHT CHANCE OF SHOWERS IN THE AFTERNOON. WAVES 3 TO 5 FT
OCCASIONALLY TO 7 FT BUILDING TO 7 TO 10 FT OCCASIONALLY TO 13 FT
FROM LATE MORNING ON.
.SUNDAY NIGHT...NORTH WINDS TO 30 KT BECOMING NORTHWEST 15 TO 25
KT. WAVES 7 TO 10 FT OCCASIONALLY TO 13 FT SUBSIDING TO 4 TO 7 FT
OCCASIONALLY TO 9 FT.
.MONDAY...NORTHWEST WINDS 10 TO 20 KT BECOMING SOUTHWEST. WAVES 4
TO 7 FT OCCASIONALLY TO 9 FT SUBSIDING TO 2 TO 4 FT IN THE
AFTERNOON.
.MONDAY NIGHT...SOUTHWEST WINDS 10 TO 20 KT. WAVES 2 TO 4 FT.
.TUESDAY...WEST WINDS 5 TO 10 KT BECOMING SOUTHWEST. WAVES 1 TO
3 FT.
.TUESDAY NIGHT...SOUTH WINDS 5 TO 10 KT. WAVES 1 TO 2 FT.
.WEDNESDAY...SOUTH WINDS 10 TO 15 KT. WAVES 1 TO 3 FT.
.THURSDAY...SOUTH WINDS 5 TO 10 KT. WAVES 1 TO 2 FT.

$$

LMZ080-567-669-671-673-675-777-779-868-870-872-874-876-878-210400-
LAKE MICHIGAN FROM MICHIGAN CITY IN TO ST. JOSEPH MI 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 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 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-
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-
231 PM CDT SAT SEP 20 2014

TWO RIVERS WI TO MANISTEE MI SOUTH

...GALE WATCH IN EFFECT FROM SUNDAY MORNING THROUGH SUNDAY
EVENING...

.TONIGHT...WEST WINDS 10 TO 20 KT BECOMING NORTHWEST. CHANCE OF
SHOWERS AND THUNDERSTORMS THIS EVENING...THEN CHANCE OF SHOWERS
AND SLIGHT CHANCE OF THUNDERSTORMS OVERNIGHT. WAVES 4 TO 7 FT
OCCASIONALLY TO 9 FT SUBSIDING TO 3 TO 5 FT OCCASIONALLY TO 7 FT
OVERNIGHT.
.SUNDAY...NORTHWEST WINDS 15 TO 25 KT BECOMING NORTH GALES TO
35 KT FROM LATE MORNING ON. CHANCE OF SHOWERS. WAVES 4 TO 7 FT
OCCASIONALLY TO 9 FT BUILDING TO 8 TO 11 FT OCCASIONALLY TO 14 FT
IN THE AFTERNOON.
.SUNDAY NIGHT...NORTH WINDS TO 30 KT DIMINISHING TO 15 TO 25 KT.
WAVES 8 TO 12 FT OCCASIONALLY TO 15 FT.
.MONDAY...NORTH WINDS 10 TO 20 KT BECOMING WEST 5 TO 10 KT. WAVES
6 TO 9 FT OCCASIONALLY TO 11 FT SUBSIDING TO 2 TO 4 FT.
.MONDAY NIGHT...SOUTHWEST WINDS 10 TO 15 KT. WAVES 1 TO 3 FT.
.TUESDAY...SOUTHWEST WINDS 5 TO 10 KT BECOMING SOUTH. WAVES 1 TO
3 FT.
.TUESDAY NIGHT...SOUTHEAST WINDS 5 TO 10 KT. WAVES 1 TO 2 FT.
.WEDNESDAY...SOUTHEAST WINDS 10 TO 15 KT. WAVES 1 TO 3 FT.
.THURSDAY...SOUTHEAST WINDS 5 TO 10 KT. WAVES 1 TO 3 FT.

$$

LMZ761-210400-
MAFOR 2021/
MICHIGAN NORTH 11530 11620 11720 13830 12840. WAVES 4 TO 7 FT
OCCASIONALLY TO 9 FT SUBSIDING TO 3 TO 5 FT OCCASIONALLY TO 7 FT
TONIGHT...BUILDING TO 7 TO 10 FT OCCASIONALLY TO 13 FT SUNDAY.

MICHIGAN SOUTH 11530 12620 11720 11730 11740 12850. WAVES 4 TO 7
FT OCCASIONALLY TO 9 FT SUBSIDING TO 3 TO 5 FT OCCASIONALLY TO 7
FT OVERNIGHT. WAVES 4 TO 7 FT OCCASIONALLY TO 9 FT BUILDING TO 8
TO 11 FT OCCASIONALLY TO 14 FT SUNDAY.

$$

KREIN




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