Great Lakes Forecast
Issued by NWS

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000
FZUS63 KLOT 190144
GLFLM

OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
844 PM CDT SUN SEP 18 2016

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...HIGH PRESSURE OF 30.0 INCHES OVER THE OHIO VALLEY WILL
SLOWLY SLIDE SOUTHEAST TOWARDS THE MIDDLE ATLANTIC REGION LATE
MONDAY AFTERNOON. MEANWHILE A LOW OF 29.2 INCHES WILL MOVE ACROSS
THE CANADIAN PRAIRIES AND REACH HUDSON BAY EARLY MONDAY...THEN
DEEPEN TO 29.1 INCHES BY MONDAY NIGHT. A TRAILING COLD FRONT
MOVING ACROSS THE NORTHERN PLAINS MONDAY WILL MOVE OVER LAKE
MICHIGAN MONDAY NIGHT. HIGH PRESSURE OF 30.2 INCHES WILL SPREAD
ACROSS LAKE MICHIGAN TUESDAY FOLLOWING THE FRONTAL PASSAGE.

LMZ261-362-364-366-563-565-567-868-190800-
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-
844 PM CDT SUN SEP 18 2016

SHEBOYGAN WI TO PENTWATER MI NORTH...

.REST OF TONIGHT...SOUTH WINDS 15 TO 25 KT BECOMING SOUTHWEST TO
30 KT. WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT.
.MONDAY...SOUTHWEST WINDS TO 30 KT. SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. WAVES 4 TO 6 FT OCCASIONALLY TO 8 FT.
.MONDAY NIGHT...SOUTHWEST WINDS 10 TO 20 KT BECOMING WEST 10 TO
15 KT. WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT.
.TUESDAY...WEST WINDS 10 TO 20 KT BECOMING SOUTHWEST. WAVES 2 TO
4 FT.
.TUESDAY NIGHT...SOUTHWEST WINDS 10 TO 15 KT BECOMING WEST. WAVES
1 TO 3 FT.
.WEDNESDAY...SOUTH WINDS 10 TO 15 KT. CHANCE OF SHOWERS AND
THUNDERSTORMS IN THE AFTERNOON. WAVES 1 TO 3 FT.
.WEDNESDAY NIGHT...SOUTHEAST WINDS 10 TO 20 KT BECOMING SOUTH.
SHOWERS AND THUNDERSTORMS LIKELY. WAVES 1 TO 3 FT.
.THURSDAY...SOUTH WINDS 10 TO 20 KT BACKING TO EAST 10 TO 15 KT.
CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES 1 TO 3 FT.
.FRIDAY...NORTHEAST WINDS 10 TO 20 KT. CHANCE OF SHOWERS AND
THUNDERSTORMS. WAVES 2 TO 4 FT.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-190800-
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-
844 PM CDT SUN SEP 18 2016

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.REST OF TONIGHT...SOUTH WINDS 10 TO 20 KT BECOMING SOUTHWEST
15 TO 25 KT. WAVES 2 TO 4 FT.
.MONDAY...SOUTHWEST WINDS TO 30 KT BECOMING SOUTH 15 TO 25 KT.
SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES BUILDING TO 4
TO 6 FT OCCASIONALLY TO 8 FT.
.MONDAY NIGHT...SOUTHWEST WINDS 10 TO 20 KT DIMINISHING TO 10 TO
15 KT LATE IN THE EVENING...THEN BECOMING WEST AFTER MIDNIGHT
BECOMING NORTH LATE. CHANCE OF SHOWERS AND THUNDERSTORMS IN THE
EVENING. WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT SUBSIDING TO 1 TO
3 FT.
.TUESDAY...NORTH WINDS 5 TO 10 KT BACKING TO SOUTH. WAVES 1 TO
3 FT.
.TUESDAY NIGHT...SOUTH WINDS 5 TO 10 KT. WAVES 1 TO 2 FT.
.WEDNESDAY...SOUTHEAST WINDS 10 TO 15 KT BECOMING SOUTH. WAVES
1 TO 3 FT.
.WEDNESDAY NIGHT...SOUTHEAST WINDS 10 TO 20 KT BECOMING SOUTH.
CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES 1 TO 3 FT.
.THURSDAY...SOUTH WINDS 10 TO 20 KT DIMINISHING TO 10 TO 15 KT.
CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES 1 TO 3 FT.
.FRIDAY...NORTHEAST WINDS 10 TO 15 KT. CHANCE OF SHOWERS AND
THUNDERSTORMS. WAVES 1 TO 3 FT.

$$
LMZ761-190800-
MAFOR 1903/
MICHIGAN NORTH 12430 14540 11540 11520. WAVES 3 TO 5 FT
OCCASIONALLY TO 7 FT TONIGHT AND 4 TO 6 FT OCCASIONALLY TO 8
FT MONDAY.

MICHIGAN SOUTH 11420 11520 11530 12540 12430 11520. CHANCE
OF SHOWERS AND THUNDERSTORMS MONDAY EVENING. WAVES 2 TO 4 FT
TONIGHT BUILDING TO 4 TO 6 FT OCCASIONALLY TO 8 FT MONDAY.

$$

EXPERIMENTAL MODERNIZED OPEN LAKE FORECAST IS AVAILABLE ONLINE AT
WEATHER.GOV/LOT/GLFTABLE (ALL LOWER CASE)

GRAPHICAL MARINE FORECASTS ARE AVAILABLE ONLINE AT
WEATHER.GOV/GREATLAKES (ALL LOWER CASE)



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