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National Weather Service Marine Forecast FZUS63 KLOT

FZUS63 KLOT 261357
GLFLM

OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
857 AM CDT WED APR 26 2017

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 OF THE HIGHEST 1/3 OF THE WAVE, ALONG WITH THE
AVERAGE HEIGHT OF THE HIGHEST 10% OF THE WAVES WHICH WILL
OCCASIONALLY BE ENCOUNTERED.

SYNOPSIS
A TROUGH OF LOW PRESSURE AVERAGING 29.6 INCHES FROM
THE MID MISSOURI VALLEY TO THE SOUTHERN PLAINS WILL CONSOLIDATE
AND DEEPEN TO 29.3 INCHES AS IT MOVES NORTHEAST TO LAKE MICHIGAN
BY TONIGHT. THE LOW WILL THEN SLOWLY LIFT ACROSS SOUTHEAST CANADA
FRIDAY AND FRIDAY NIGHT...WHILE A NEW TROUGH OF LOW PRESSURE
DEVELOPS ACROSS THE CENTRAL PLAINS. THIS TROUGH OF LOW PRESSURE
WILL STRENGTHEN AS IT SLOWLY MOVES NORTHEAST TOWARDS THE GREAT
LAKES REGION THROUGH THE WEEKEND.

LMZ261-362-364-366-563-565-567-868-262115-
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-
857 AM CDT WED APR 26 2017

SHEBOYGAN WI TO PENTWATER MI NORTH...

REST OF TODAY
SOUTHEAST WINDS 15 TO 25 KT BECOMING SOUTH.
CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES 5 TO 8 FT OCCASIONALLY
TO 10 FT.

TONIGHT
SOUTH WINDS 10 TO 20 KT BECOMING SOUTHEAST. RAIN
SHOWERS. WAVES 5 TO 7 FT OCCASIONALLY TO 9 FT SUBSIDING TO 2 TO
4 FT.

THURSDAY
SOUTH WINDS 10 TO 20 KT BECOMING SOUTHWEST 20 TO 25
KT. RAIN SHOWERS LIKELY IN THE MORNING...THEN CHANCE OF RAIN
SHOWERS IN THE AFTERNOON. WAVES 2 TO 4 FT.

THURSDAY NIGHT
SOUTHWEST WINDS 15 TO 25 KT. WAVES 2 TO 4 FT.

FRIDAY
SOUTHWEST WINDS 15 TO 25 KT DIMINISHING TO 10 TO 20 KT.
WAVES 2 TO 4 FT.

FRIDAY NIGHT
NORTHWEST WINDS 10 TO 20 KT BECOMING NORTH 15 TO
25 KT. CHANCE OF RAIN SHOWERS. WAVES 2 TO 4 FT.

SATURDAY
NORTH WINDS 15 TO 25 KT. WAVES 3 TO 5 FT OCCASIONALLY
TO 7 FT.

SUNDAY
EAST WINDS TO 30 KT BECOMING NORTHEAST GALES TO 35 KT.
RAIN SHOWERS LIKELY. WAVES 6 TO 9 FT OCCASIONALLY TO 11 FT.



LMZ080-669-671-673-675-777-779-870-872-874-876-878-262115-
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-
857 AM CDT WED APR 26 2017

SHEBOYGAN WI TO PENTWATER MI SOUTH...

REST OF TODAY
SOUTH WINDS 15 TO 25 KT. CHANCE OF SHOWERS AND
THUNDERSTORMS. WAVES 4 TO 7 FT OCCASIONALLY TO 9 FT.

TONIGHT
SOUTH WINDS 15 TO 25 KT. SHOWERS AND THUNDERSTORMS
LIKELY. WAVES 4 TO 7 FT OCCASIONALLY TO 9 FT SUBSIDING TO 3 TO 5
FT OCCASIONALLY TO 7 FT.

THURSDAY
SOUTHWEST WINDS 15 TO 25 KT. RAIN SHOWERS LIKELY IN
THE MORNING. WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT.

THURSDAY NIGHT
SOUTHWEST WINDS 10 TO 20 KT BECOMING WEST.
WAVES 2 TO 4 FT.

FRIDAY
SOUTHWEST WINDS 10 TO 15 KT BACKING TO EAST. CHANCE OF
RAIN SHOWERS IN THE AFTERNOON. WAVES 1 TO 3 FT.

FRIDAY NIGHT
NORTHEAST WINDS 10 TO 20 KT INCREASING TO 15 TO
25 KT. CHANCE OF RAIN SHOWERS. WAVES BUILDING TO 3 TO 5 FT
OCCASIONALLY TO 7 FT.

SATURDAY
NORTHEAST WINDS TO 30 KT. CHANCE OF RAIN SHOWERS.
WAVES 4 TO 7 FT OCCASIONALLY TO 9 FT.

SUNDAY
EAST GALES TO 35 KT DIMINISHING TO 30 KT. RAIN SHOWERS
WITH A CHANCE OF THUNDERSTORMS. WAVES 6 TO 9 FT OCCASIONALLY TO
11 FT SUBSIDING TO 4 TO 7 FT OCCASIONALLY TO 9 FT.


LMZ761-262115-
MAFOR 2615/
MICHIGAN NORTH 12330 11430 11426 13326 11436. CHANCE OF SHOWERS
AND THUNDERSTORMS TODAY. WAVES 5 TO 8 FT OCCASIONALLY TO 10 FT
TODAY. WAVES 5 TO 7 FT OCCASIONALLY TO 9 FT SUBSIDING TO 2 TO 4
FT TONIGHT. WAVES 2 TO 4 FT THURSDAY MORNING.

MICHIGAN SOUTH 13430 14439 11536. CHANCE OF SHOWERS AND
THUNDERSTORMS TODAY. WAVES 4 TO 7 FT OCCASIONALLY TO 9 FT TODAY
AND TONIGHT. WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT THURSDAY
MORNING.



EXPERIMENTAL MODERNIZED OPEN LAKE FORECAST IS AVAILABLE ONLINE AT
WEATHER.GOV/LOT/GLFTABLE

GRAPHICAL MARINE FORECASTS ARE AVAILABLE ONLINE AT:
WEATHER.GOV/GREATLAKES