Great Lakes Forecast
Issued by NWS

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FZUS63 KLOT 270145
GLFLM

OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
845 PM CDT SUN OCT 26 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 BROAD AREA OF HIGH PRESSURE OF 30.0 INCHES EXTENDS
FROM THE OHIO VALLEY INTO SOUTHERN ONTARIO...AND IT WILL MOVE
OVER THE SOUTHEAST ATLANTIC COAST BY MONDAY MORNING. A 29.4 INCH
LOW STRETCHES FROM SOUTHWEST CANADA THROUGH THE CENTRAL
PLAINS...AND IT WILL FILL TO 29.6 INCHES AS IT MOVES OVER THE LAKE
MONDAY NIGHT. A COUPLE OF COLD FRONTS WILL MOVE OVER THE LAKE
TUESDAY AND WEDNESDAY AS THE LOW DEEPENS TO 29.2 INCHES AND MOVES
OVER NORTHWEST ONTARIO WEDNESDAY. HIGH PRESSURE OF 30.2 INCHES
SPREADS OVER THE LAKE WEDNESDAY AFTERNOON AND EVENING. A WEAK
SURFACE TROUGH AVERAGING 29.9 INCHES PASSES OVER THE LAKE THURSDAY
NIGHT AS A LARGE 30.5 INCH HIGH BUILDS OVER THE PLAINS AND MOVES
OVER THE LAKE SATURDAY.

LMZ261-362-364-366-563-565-567-868-270930-
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-
845 PM CDT SUN OCT 26 2014

SHEBOYGAN WI TO PENTWATER MI NORTH

.REST OF TONIGHT...SOUTHEAST WINDS 10 TO 20 KT...INCREASING TO 15
TO 25 KT OVERNIGHT. SLIGHT CHANCE OF THUNDERSTORMS THIS EVENING...THEN
CHANCE OF SHOWERS AND THUNDERSTORMS OVERNIGHT. WAVES 1 TO 2 FT
BUILDING TO 2 TO 4 FT OVERNIGHT.
.MONDAY...SOUTHEAST WINDS 15 TO 25 KT BECOMING SOUTH LATE.
OCCASIONAL GUSTS TO 30 KT ARE POSSIBLE FROM THE LATE MORNING
THROUGH THE MID AFTERNOON. SHOWERS LIKELY WITH SLIGHT CHANCE OF
THUNDERSTORMS IN THE MORNING...THEN CHANCE OF SHOWERS AND SLIGHT
CHANCE OF THUNDERSTORMS IN THE AFTERNOON. WAVES 4 TO 7 FT
OCCASIONALLY TO 9 FT.
.MONDAY NIGHT...SOUTH WINDS 10 TO 15 KT BECOMING SOUTHWEST AFTER
MIDNIGHT. CHANCE OF SHOWERS AND THUNDERSTORMS IN THE
EVENING...THEN SHOWERS WITH A CHANCE OF THUNDERSTORMS OVERNIGHT.
WAVES 4 TO 6 FT OCCASIONALLY TO 8 FT SUBSIDING TO 2 TO 4 FT
OVERNIGHT.
.TUESDAY...WEST WINDS 15 TO 25 KT. CHANCE OF SHOWERS. WAVES BUILDING
TO 4 TO 7 FT OCCASIONALLY TO 9 FT IN THE AFTERNOON.
.TUESDAY NIGHT...WEST WINDS TO 30 KT. CHANCE OF SHOWERS. WAVES
5 TO 8 FT OCCASIONALLY TO 10 FT.
.WEDNESDAY...NORTHWEST WINDS 15 TO 25 KT DIMINISHING TO 10 TO 20
KT IN THE AFTERNOON. SLIGHT CHANCE OF SHOWERS. WAVES 5 TO 8 FT
OCCASIONALLY TO 10 FT SUBSIDING TO 3 TO 5 FT OCCASIONALLY TO 7
FT.
.WEDNESDAY NIGHT...NORTHWEST WINDS 10 TO 15 KT. WAVES SUBSIDING
TO 1 TO 3 FT OVERNIGHT.
.THURSDAY...NORTHWEST WINDS 5 TO 10 KT. SLIGHT CHANCE OF SHOWERS.
WAVES 1 TO 3 FT.
.FRIDAY...NORTH WINDS TO 30 KT. SLIGHT CHANCE OF SHOWERS. WAVES
BUILDING TO 5 TO 8 FT OCCASIONALLY TO 10 FT.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-270930-
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-
845 PM CDT SUN OCT 26 2014

SHEBOYGAN WI TO PENTWATER MI SOUTH

.REST OF TONIGHT...SOUTHEAST WINDS 10 TO 20 KT...INCREASING TO 15
TO 25 KT OVERNIGHT. SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS THIS
EVENING...THEN CHANCE OF SHOWERS AND THUNDERSTORMS OVERNIGHT.
WAVES 1 TO 3 FT BUILDING TO 3 TO 5 FT OCCASIONALLY TO 7 FT
OVERNIGHT.
.MONDAY...SOUTHEAST WINDS 15 TO 25 KT BECOMING SOUTH. SLIGHT
CHANCE OF SHOWERS AND THUNDERSTORMS IN THE MORNING. WAVES 4 TO 7
FT OCCASIONALLY TO 9 FT.
.MONDAY NIGHT...SOUTHWEST WINDS 15 TO 25 KT. CHANCE OF SHOWERS
AND THUNDERSTORMS IN THE EVENING...THEN SHOWERS LIKELY WITH A
CHANCE OF THUNDERSTORMS OVERNIGHT. WAVES 4 TO 6 FT OCCASIONALLY
TO 8 FT.
.TUESDAY...WEST WINDS 20 TO 25 KT. CHANCE OF SHOWERS IN THE
MORNING...THEN SLIGHT CHANCE OF SHOWERS IN THE AFTERNOON. WAVES
4 TO 6 FT OCCASIONALLY TO 8 FT.
.TUESDAY NIGHT...WEST WINDS TO 30 KT. WAVES 5 TO 8 FT
OCCASIONALLY TO 10 FT.
.WEDNESDAY...NORTHWEST WINDS 15 TO 25 KT DIMINISHING TO 10 TO 20
KT. WAVES 5 TO 8 FT OCCASIONALLY TO 10 FT DIMINISHING TO 4 TO 6
FT OCCASIONALLY TO 8 FT LATE.
.WEDNESDAY NIGHT...WEST WINDS 10 TO 15 KT. WAVES 3 TO 5 FT
OCCASIONALLY TO 7 FT SUBSIDING TO 2 TO 4 FT OVERNIGHT.
.THURSDAY...WEST WINDS 5 TO 10 KT BECOMING NORTHWEST LATE IN THE
AFTERNOON. SLIGHT CHANCE OF SHOWERS. WAVES 1 TO 3 FT.
.FRIDAY...NORTH WINDS TO 30 KT. CHANCE OF SHOWERS. WAVES 2 TO 4
FT BUILDING TO 5 TO 8 FT OCCASIONALLY TO 10 FT IN THE AFTERNOON.

$$
LMZ761-270930-
MAFOR 2703/
MICHIGAN NORTH 12320 12336 12330 11430 11420. CHANCE OF
SHOWERS AND THUNDERSTORMS AT TIMES TONIGHT AND MONDAY EVENING.
WAVES 1 TO 3 FT BUILDING TO 3 TO 5 FT OCCASIONALLY TO 7 FT
OVERNIGHT. WAVES 4 TO 7 FT OCCASIONALLY TO 9 FT MONDAY.

MICHIGAN SOUTH 11320 13330 13430 11530. CHANCE OF THUNDERSTORMS
LATE THIS EVENING. CHANCE OF SHOWERS AND THUNDERSTORMS MONDAY
EVENING. WAVES 1 TO 3 FT BUILDING TO 3 TO 5 FT OCCASIONALLY TO 7
FT OVERNIGHT. WAVES 4 TO 7 FT OCCASIONALLY TO 9 FT MONDAY.

$$

KMD






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