Great Lakes Forecast
Issued by NWS

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FZUS63 KLOT 221940
GLFLM

OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
240 PM CDT TUE JUL 22 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...THIS AFTERNOON...HIGH PRESSURE OF 30.1 INCHES IS
MOVING OFF THE MID ATLANTIC COAST WHILE LOW PRESSURE OF 29.6
INCHES MOVES INTO SOUTHERN ONTARIO. THE LOW WILL DEEPEN TO 29.3
INCHES AS IT MOVES NORTHEAST THROUGH QUEBEC TONIGHT WHILE
DRAGGING A COLD FRONT DOWN THE LENGTH OF LAKE MICHIGAN. HIGH
PRESSURE OF 30.3 INCHES WILL BUILD ACROSS THE UPPER MISSISSIPPI
VALLEY AND WESTERN GREAT LAKES WEDNESDAY...WITH THE CENTER OF THE
HIGH REACHING THE SOUTHERN TIP OF THE LAKE THURSDAY EVENING. THE
HIGH PRESSURE WILL CONTINUE TO SPREAD SOUTHEAST ACROSS THE OHIO
VALLEY THURSDAY NIGHT WHILE A TROUGH OF LOW PRESSURE AVERAGING
29.5 INCHES DEVELOPS OVER THE NORTHERN PLAINS. THE TROUGH AND AN
ASSOCIATED COLD FRONT IS EXPECTED TO SWEEP ACROSS LAKE MICHIGAN ON
SATURDAY.

LMZ261-362-364-366-563-565-230345-
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-
240 PM CDT TUE JUL 22 2014

TWO RIVERS WI TO MANISTEE MI NORTH

.TONIGHT...NORTHEST 15 TO 25 KT BECOMING NORTH WINDS TO 30 KT IN
THE EARLY EVENING...WITH OCCASIONAL GALE FORCE GUSTS TO 25 KT
POSSIBLE. CHANCE OF SHOWERS AND THUNDERSTORMS THROUGH EARLY
EVENING...THEN SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS LATE
THIS EVENING. WAVES 4 TO 7 FT OCCASIONALLY TO 9 FT.
.WEDNESDAY...NORTH WINDS TO 30 KT DIMINISHING TO 15 TO 25 KT IN
THE EARLY AFTERNOON. WAVES 4 TO 7 FT OCCASIONALLY TO 9 FT
SUBSIDING TO 3 TO 5 FT OCCASIONALLY TO 7 FT.
.WEDNESDAY NIGHT...NORTH WINDS 15 TO 25 KT BECOMING NORTHWEST 10
TO 15 KT. WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT.
.THURSDAY...NORTHWEST WINDS 10 TO 15 KT BECOMING SOUTHWEST 10 TO
20 KT. WAVES 1 TO 3 FT.
.THURSDAY NIGHT...SOUTHWEST WINDS 10 TO 15 KT. WAVES 1 TO 3 FT.
.FRIDAY...SOUTHWEST WINDS 15 TO 25 KT. WAVES 1 TO 3 FT.
.FRIDAY NIGHT...SOUTHWEST WINDS 10 TO 20 KT. SLIGHT CHANCE OF
SHOWERS AND THUNDERSTORMS. WAVES 1 TO 3 FT.
.SATURDAY...SOUTHWEST WINDS 10 TO 15 KT. CHANCE OF SHOWERS AND
THUNDERSTORMS. WAVES 1 TO 3 FT.
.SUNDAY...WEST WINDS 10 TO 15 KT. CHANCE OF SHOWERS AND
THUNDERSTORMS. WAVES 1 TO 2 FT.

$$

LMZ080-567-669-671-673-675-777-779-868-870-872-874-876-878-230345-
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-
240 PM CDT TUE JUL 22 2014

TWO RIVERS WI TO MANISTEE MI SOUTH

.TONIGHT...SOUTHWINDS 15 TO 25 KT VEERING TO WEST IN THE EARLY
EVENING AND THEN VEERING NORTH AND INCREASING TO 30 KT WITH
OCCASIONAL GALE FORCE GUSTS TO 35 KT AFTER MIDNIGHT. CHANCE OF
SHOWERS AND THUNDERSTORMS THIS EVENING...THEN SLIGHT CHANCE OF
SHOWERS AND THUNDERSTORMS AFTER MIDNIGHT. WAVES 3 TO 5 FT
OCCASIONALLY TO 7 FT BUILDING TO 7 TO 10 FT OCCASIONALLY TO 13 FT
OVERNIGHT.
.WEDNESDAY...NORTH WINDS TO 30 KT WITH OCCASIONAL GALE FORCE GUSTS
TO 35 KT POSSIBLE. WAVES 7 TO 10 FT OCCASIONALLY TO 13 FT.
.WEDNESDAY NIGHT...NORTHEAST WINDS 15 TO 25 KT VEERING NORTHEAST
AND DIMINISHING TO 10 TO 20 KT. WAVES 7 TO 10 FT OCCASIONALLY TO
13 FT SUBSIDING TO 4 TO 7 FT OCCASIONALLY TO 9 FT.
.THURSDAY...NORTHEAST WINDS 10 TO 15 KT BECOMING NORTH. WAVES
4 TO 6 FT OCCASIONALLY TO 8 FT SUBSIDING TO 2 TO 4 FT IN THE
AFTERNOON.
.THURSDAY NIGHT...SOUTH WINDS 10 TO 15 KT BECOMING SOUTHWEST.
WAVES 1 TO 3 FT.
.FRIDAY...SOUTH WINDS 10 TO 15 KT. WAVES 1 TO 2 FT.
.FRIDAY NIGHT...SOUTH WINDS 10 TO 15 KT. CHANCE OF SHOWERS AND
THUNDERSTORMS. WAVES 1 TO 3 FT.
.SATURDAY...SOUTH WINDS 10 TO 15 KT BECOMING SOUTHWEST. CHANCE OF
SHOWERS AND THUNDERSTORMS. WAVES 1 TO 3 FT.
.SUNDAY...WEST WINDS 10 TO 15 KT. CHANCE OF SHOWERS AND
THUNDERSTORMS. WAVES 1 TO 2 FT.

$$

LMZ761-230345-
MAFOR 2221/
MICHIGAN NORTH 10530 12730 12840 19850 12840 11830. WAVES 4 TO 7
FT OCCASIONALLY TO 9 FT TONIGHT. WAVES 4 TO 7 FT OCCASIONALLY TO 9
FT SUBSIDING TO 3 TO 5 FT OCCASIONALLY TO 7 FT BY WEDNESDAY
AFTERNOON.

MICHIGAN SOUTH 12530 11630 14840 19850 11840. WAVES 3 TO 5 FT
OCCASIONALLY TO 7 FT BUILDING TO 7 TO 10 FT OCCASIONALLY TO 13 FT
OVERNIGHT. WAVES 7 TO 10 FT OCCASIONALLY TO 13 FT WEDNESDAY.

$$

KREIN




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