Great Lakes Forecast
Issued by NWS

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FZUS63 KLOT 241335
GLFLM

OPEN LAKE FORECAST FOR LAKE MICHIGAN...RESENT
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
835 AM CDT MON APR 24 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 RIDGE OF HIGH PRESSURE AVERAGING 30.1 INCHES
EXTENDS ACROSS THE GREAT LAKES TO THE CENTRAL AND SOUTHERN PLAINS.
LOW PRESSURE OF 29.4 INCHES WILL MOVE FROM THE NORTHERN PLAINS
TODAY TO LAKE SUPERIOR TUESDAY AND FILL. NEW LOW PRESSURE OF 29.3
INCHES OVER THE CENTRAL PLAINS TUESDAY WILL MOVE NORTHEAST TO LAKE
MICHIGAN WEDNESDAY AND WEDNESDAY NIGHT...AND THEN CONTINUE TO THE
NORTHEAST THURSDAY.

LMZ261-362-242130-
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-
835 AM CDT MON APR 24 2017

ROCK ISLAND PASSAGE TO CHARLEVOIX MI NORTH...

.REST OF TODAY...EAST WINDS 15 TO 25 KT INCREASING TO 30 KT.
WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT BUILDING TO 4 TO 6 FT
OCCASIONALLY TO 8 FT TODAY.
.TONIGHT...EAST WINDS TO 30 KT BECOMING SOUTHEAST 10 TO 20 KT.
WAVES SUBSIDING TO 3 TO 5 FT OCCASIONALLY TO 7 FT.
.TUESDAY...SOUTHEAST WINDS 10 TO 20 KT. WAVES SUBSIDING TO 2 TO 4
FT.
.TUESDAY NIGHT...EAST WINDS 10 TO 20 KT. CHANCE OF RAIN SHOWERS.
WAVES 2 TO 4 FT.
.WEDNESDAY...SOUTHEAST WINDS 10 TO 20 KT. RAIN SHOWERS LIKELY.
WAVES 2 TO 4 FT.
.WEDNESDAY NIGHT...EAST WINDS 10 TO 20 KT BECOMING SOUTHEAST 15
TO 25 KT. CHANCE OF RAIN SHOWERS. WAVES 2 TO 4 FT.
.THURSDAY...SOUTH WINDS 15 TO 25 KT INCREASING TO 30 KT. CHANCE
OF RAIN SHOWERS. WAVES BUILDING TO 4 TO 7 FT OCCASIONALLY TO 9
FT.
.FRIDAY...SOUTHWEST WINDS 10 TO 20 KT. WAVES 2 TO 4 FT.

$$

LMZ364-366-563-565-567-868-242130-
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-
835 AM CDT MON APR 24 2017

ROCK ISLAND PASSAGE TO CHARLEVOIX MI SOUTH TO SHEBOYGAN WI TO
PENTWATER MI...

.REST OF TODAY...SOUTHEAST WINDS 10 TO 20 KT. WAVES 1 TO 3 FT.
.TONIGHT...SOUTHEAST WINDS 10 TO 20 KT INCREASING TO 15 TO 25 KT.
WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT.
.TUESDAY...SOUTHEAST WINDS 15 TO 25 KT BECOMING SOUTH 10 TO 20
KT. WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT.
.TUESDAY NIGHT...SOUTHEAST WINDS 10 TO 20 KT INCREASING TO 15 TO
25 KT. CHANCE OF RAIN SHOWERS. WAVES 2 TO 4 FT.
.WEDNESDAY...SOUTH WINDS 15 TO 25 KT. RAIN SHOWERS LIKELY. WAVES
3 TO 5 FT OCCASIONALLY TO 7 FT.
.WEDNESDAY NIGHT...EAST WINDS 10 TO 20 KT BECOMING SOUTHEAST TO
30 KT OVERNIGHT. CHANCE OF RAIN SHOWERS. WAVES 3 TO 5 FT
OCCASIONALLY TO 7 FT.
.THURSDAY...SOUTH WINDS TO 30 KT BECOMING SOUTHWEST. CHANCE OF
RAIN SHOWERS. WAVES 4 TO 7 FT OCCASIONALLY TO 9 FT.
.FRIDAY...SOUTHWEST WINDS 10 TO 20 KT BECOMING SOUTH. WAVES 2 TO
4 FT.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-242130-
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-
835 AM CDT MON APR 24 2017

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.REST OF TODAY...SOUTHEAST WINDS 10 TO 20 KT DIMINISHING TO 10 TO
15 KT. WAVES 2 TO 4 FT.
.TONIGHT...SOUTHEAST WINDS 10 TO 20 KT INCREASING TO 15 TO 25
KT. WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT.
.TUESDAY...SOUTHEAST WINDS 15 TO 25 KT. WAVES 3 TO 5 FT
OCCASIONALLY TO 7 FT.
.TUESDAY NIGHT...SOUTHEAST WINDS 15 TO 25 KT. CHANCE OF RAIN
SHOWERS. WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT.
.WEDNESDAY...SOUTH WINDS 15 TO 25 KT. CHANCE OF RAIN SHOWERS.
WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT.
.WEDNESDAY NIGHT...SOUTH WINDS 10 TO 20 KT INCREASING TO 15 TO
25 KT. CHANCE OF RAIN SHOWERS. SLIGHT CHANCE OF THUNDERSTORMS.
WAVES 2 TO 4 FT.
.THURSDAY...SOUTHWEST WINDS TO 30 KT. CHANCE OF RAIN SHOWERS.
WAVES 4 TO 7 FT OCCASIONALLY TO 9 FT.
.FRIDAY...SOUTH WINDS 10 TO 20 KT. WAVES 2 TO 4 FT.

$$
LMZ761-242130-
MAFOR 2415/
MICHIGAN NORTH 11230 13240 14330. WAVES 3 TO 5 FT OCCASIONALLY TO
7 FT BUILDING TO 4 TO 6 FT OCCASIONALLY TO 8 FT TODAY. WAVES 4 TO
6 FT OCCASIONALLY TO 8 FT SUBSIDING TO 3 TO 5 FT OCCASIONALLY TO
7 FT TONIGHT. WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT TUESDAY
MORNING.

MICHIGAN SOUTH 11320 12310 11320 14330. WAVES 2 TO 4 FT TODAY.
WAVES 2 TO 4 FT BUILDING TO 3 TO 5 FT OCCASIONALLY TO 7 FT
TONIGHT. WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT TUESDAY MORNING.

$$

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

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



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