Great Lakes Forecast
Issued by NWS

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FZUS63 KLOT 270120
GLFLM

OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
820 PM CDT TUE MAY 26 2015

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...LOW PRESSURE OF 29.6 INCHES OVER CENTRAL WISCONSIN
WILL LIFT TO THE NORTHERN PORTIONS OF LAKE MICHIGAN EARLY
WEDNESDAY WHILE SLOWLY WEAKENING. HIGH PRESSURE AVERAGING 30.1
INCHES WILL THEN SPREAD OVER THE LAKE WEDNESDAY NIGHT. THE NEXT
LOW WILL FORM OVER THE NORTHERN PLAINS THURSDAY...AND WILL PASS
NORTH OF THE GREAT LAKES AT ABOUT 29.6 INCHES ON FRIDAY. A STRONG
COLD FRONT TRAILING FROM THE LOW WILL SWEEP ACROSS THE LAKE FRIDAY
NIGHT INTO 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-
820 PM CDT TUE MAY 26 2015

SHEBOYGAN WI TO PENTWATER MI NORTH

.REST OF TONIGHT...EAST WINDS 10 TO 20 KT BECOMING SOUTHWEST
15 TO 25 KT. AREAS OF FOG. A CHANCE OF SHOWERS AND A SLIGHT
CHANCE OF THUNDERSTORMS OVERNIGHT. WAVES 2 TO 4 FT BUILDING TO 3
TO 5 FT OCCASIONALLY TO 7 FT.
.WEDNESDAY...SOUTHWEST WINDS 15 TO 25 KT BECOMING WEST 15 TO 20 KT.
SHOWERS LIKELY WITH A CHANCE OF THUNDERSTORMS IN THE
MORNING...THEN CHANCE OF SHOWERS AND THUNDERSTORMS IN THE
AFTERNOON. WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT.
.WEDNESDAY NIGHT...SOUTHWEST WINDS 10 TO 15 KT BECOMING SOUTH 5
TO 10 KT. CHANCE OF SHOWERS IN THE EVENING. WAVES SUBSIDING TO 1
TO 2 FT.
.THURSDAY...SOUTH WINDS 10 TO 15 KT INCREASING TO 10 TO 20 KT.
WAVES 1 TO 2 FT.
.THURSDAY NIGHT...SOUTH WINDS 10 TO 20 KT. WAVES 1 TO 2 FT.
.FRIDAY...SOUTH WINDS 15 TO 25 KT BECOMING SOUTHWEST 10 TO 20 KT.
CHANCE OF SHOWERS AND THUNDERSTORMS IN THE MORNING... THEN
SHOWERS AND THUNDERSTORMS LIKELY IN THE AFTERNOON. WAVES 1 TO
3 FT.
.FRIDAY NIGHT...WEST WINDS 10 TO 20 KT BECOMING NORTH 15 TO
25 KT. SHOWERS AND THUNDERSTORMS LIKELY. WAVES BUILDING TO 2 TO 4
FT.
.SATURDAY...NORTH WINDS TO 30 KT EASING TO 15 TO 20 KT. CHANCE OF
SHOWERS. WAVES BUILDING TO 4 TO 7 FT OCCASIONALLY TO 9 FT.
.SUNDAY...NORTHEAST WINDS 10 TO 15 KT INCREASING TO 10 TO 20 KT.
WAVES 2 TO 4 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-
820 PM CDT TUE MAY 26 2015

SHEBOYGAN WI TO PENTWATER MI SOUTH

.REST OF TONIGHT...SOUTH WINDS 15 TO 20 KT BECOMING SOUTHWEST.
AREAS OF FOG. SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS
OVERNIGHT. WAVES 2 TO 4 FT.
.WEDNESDAY...SOUTHWEST WINDS 10 TO 20 KT BECOMING SOUTH 5 TO
10 KT. SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES SUBSIDING
TO 1 TO 3 FT.
.WEDNESDAY NIGHT...SOUTHEAST WINDS 5 TO 10 KT BECOMING SOUTH.
WAVES 1 FT OR LESS.
.THURSDAY...SOUTH WINDS 10 TO 15 KT BECOMING SOUTHEAST. WAVES
1 FT OR LESS.
.THURSDAY NIGHT...SOUTHEAST WINDS 10 TO 15 KT BECOMING SOUTH
10 TO 20 KT. WAVES 1 TO 2 FT.
.FRIDAY...SOUTH WINDS 10 TO 20 KT. SHOWERS AND THUNDERSTORMS
LIKELY IN THE MORNING...THEN CHANCE OF SHOWERS AND THUNDERSTORMS
IN THE AFTERNOON. WAVES 1 TO 3 FT.
.FRIDAY NIGHT...SOUTHWEST WINDS 10 TO 15 KT VEERING TO NORTH 20 TO
25 KT TOWARD DAYBREAK. SHOWERS AND THUNDERSTORMS LIKELY. WAVES 1
TO 3 FT.
.SATURDAY...NORTH WINDS TO 30 KT. SHOWERS LIKELY. WAVES BUILDING
TO 5 TO 8 FT OCCASIONALLY TO 10 FT.
.SUNDAY...NORTHEAST WINDS 10 TO 20 KT. WAVES 3 TO 5 FT
OCCASIONALLY TO 7 FT SUBSIDING TO 2 TO 4 FT.

$$
LMZ761-270930-
MAFOR 2704/
MICHIGAN NORTH 10226 12336 11533 11536 11620 11630 11520 11510.
CHANCE OF SHOWERS OVERNIGHT. CHANCE OF SHOWERS AND THUNDERSTORMS
WEDNESDAY AND WEDNESDAY EVENING. WAVES 2 TO 4 FT BUILDING TO 3 TO
5 FT OCCASIONALLY TO 7 FT OVERNIGHT AND WEDNESDAY...SUBSIDING TO 2
TO 4 FT WEDNESDAY EVENING.

MICHIGAN SOUTH 11423 12523 11520 12510 12300. WAVES 2 TO 4 FT
OVERNIGHT AND WEDNESDAY. WAVES 1 TO 3 FT WEDNESDAY EVENING.

$$

RATZER


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