Great Lakes Forecast
Issued by NWS

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000
FZUS63 KLOT 240754
GLFLM

OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
254 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...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.

LMZ261-362-241500-
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-
254 AM CDT MON APR 24 2017

ROCK ISLAND PASSAGE TO CHARLEVOIX MI NORTH...

.TODAY...EAST WINDS 10 TO 20 KT INCREASING TO 30 KT. WAVES 1 TO
3 FT BUILDING TO 3 TO 6 FT OCCASIONALLY TO 8 FT.
.TONIGHT...EAST WINDS TO 30 KT BECOMING SOUTHEAST 10 TO 20 KT.
WAVES 3 TO 6 FT OCCASIONALLY TO 8 FT SUBSIDING TO 2 TO 4 FT.
.TUESDAY...SOUTHEAST WINDS 10 TO 20 KT. WAVES 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.

$$

LMZ364-366-563-565-567-868-241500-
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-
254 AM CDT MON APR 24 2017

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

.TODAY...NORTHEAST WINDS 10 TO 20 KT BECOMING EAST. 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 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.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-241500-
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-
254 AM CDT MON APR 24 2017

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.TODAY...EAST WINDS 10 TO 20 KT BECOMING SOUTHEAST. 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.

$$

LMZ761-241500-
MAFOR 2409/
MICHIGAN NORTH 12120 13220 19240 12320 19230 11330. WAVES 2 TO
4 FT BUILDING TO 3 TO 6 FT OCCASIONALLY TO 8 FT TODAY FAR NORTH.
WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT TONIGHT.

MICHIGAN SOUTH 10120 12220 14320 12330. WAVES 2 TO 4 FT TODAY
BUILDING TO 3 TO 5 FT OCCASIONALLY TO 7 FT TONIGHT.

$$

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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