Great Lakes Forecast
Issued by NWS

Current Version | Previous Version | Text Only | Print | Product List | Glossary On
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50
000
FZUS63 KLOT 210123
GLFLM

OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
823 PM CDT SUN JUL 20 2014

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...A 30.1 INCH RIDGE OF HIGH PRESSURE REMAINS OVER THE
CENTRAL AND EASTERN GREAT LAKES WHILE LOW PRESSURE OF 29.3 INCHES
IS MOVING FROM NORTHERN SASKATCHEWAN INTO ONTARIO. THIS LOW WILL
MOVE OVER HUDSON BAY MONDAY WHILE ANOTHER LOW OF 29.7 INCHES FORMS
OVER THE NORTHERN PLAINS. THE SECOND LOW WILL MOVE ACROSS LAKE
MICHIGAN TUESDAY NIGHT DRAGGING A COLD FRONT ACROSS THE LAKE. HIGH
PRESSURE OF 30.3 INCHES WILL BUILD OVER MANITOBA WEDNESDAY THEN
OVER LAKE MICHIGAN BY THURSDAY NIGHT.

LMZ261-362-364-366-563-565-567-868-211000-
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-
823 PM CDT SUN JUL 20 2014

SHEBOYGAN WI TO PENTWATER MI NORTH

.REST OF TONIGHT...SOUTH WINDS 10 TO 20 KT INCREASING TO 15 TO 25
KT LATE. WAVES 2 TO 4 FT BUILDING TO 3 TO 5 FT OCCASIONALLY TO 7
FT.
.MONDAY...SOUTH WINDS 15 TO 25 KT. WAVES 4 TO 6 FT OCCASIONALLY TO
8 FT.
.MONDAY NIGHT...SOUTH WINDS 15 TO 25 KT. SLIGHT CHANCE OF SHOWERS
AND THUNDERSTORMS OVERNIGHT. WAVES 4 TO 6 FT OCCASIONALLY TO
8 FT.
.TUESDAY...SOUTHWEST WINDS 15 TO 25 KT. CHANCE OF SHOWERS AND
THUNDERSTORMS IN THE MORNING...THEN SHOWERS AND THUNDERSTORMS
LIKELY IN THE AFTERNOON. WAVES 4 TO 6 FT OCCASIONALLY TO 8 FT.
.TUESDAY NIGHT...WEST WINDS 10 TO 20 KT BECOMING NORTH TO 30 KT.
SHOWERS AND THUNDERSTORMS IN THE EVENING...THEN SHOWERS AND
THUNDERSTORMS LIKELY OVERNIGHT. WAVES 4 TO 6 FT OCCASIONALLY TO
8 FT SUBSIDING TO 3 TO 5 FT OCCASIONALLY TO 7 FT OVERNIGHT.
.WEDNESDAY...NORTH WINDS TO 30 KT. SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. WAVES 4 TO 7 FT OCCASIONALLY TO 9 FT.
.WEDNESDAY NIGHT...NORTH WINDS 15 TO 25 KT. WAVES 4 TO 6 FT
OCCASIONALLY TO 8 FT.
.THURSDAY...NORTH WINDS 10 TO 15 KT. WAVES 2 TO 4 FT.
.FRIDAY...SOUTHWEST WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-211000-
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-
823 PM CDT SUN JUL 20 2014

SHEBOYGAN WI TO PENTWATER MI SOUTH

.REST OF TONIGHT...SOUTHEAST WINDS 10 TO 15 KT BECOMING
SOUTH...AND THEN INCREASING TO 10 TO 20 KT LATE. HAZE THIS
EVENING. WAVES 1 TO 3 FT.
.MONDAY...SOUTH WINDS 10 TO 20 KT. WAVES 2 TO 4 FT.
.MONDAY NIGHT...SOUTH WINDS 10 TO 20 KT. WAVES 2 TO 4 FT.
.TUESDAY...SOUTH WINDS 15 TO 25 KT. CHANCE OF SHOWERS AND
THUNDERSTORMS IN THE AFTERNOON. WAVES 3 TO 5 FT OCCASIONALLY TO
7 FT.
.TUESDAY NIGHT...SOUTHWEST WINDS 15 TO 25 KT VEERING TO
NORTHWEST. CHANCE OF SHOWERS AND THUNDERSTORMS IN THE EVENING...
THEN SHOWERS AND THUNDERSTORMS LIKELY OVERNIGHT. WAVES 3 TO 5 FT
OCCASIONALLY TO 7 FT.
.WEDNESDAY...NORTH WINDS TO 30 KT. SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. WAVES 6 TO 9 FT OCCASIONALLY TO 11 FT.
.WEDNESDAY NIGHT...NORTH WINDS TO 30 KT. WAVES 6 TO 9 FT
OCCASIONALLY TO 11 FT.
.THURSDAY...NORTH WINDS 10 TO 20 KT. WAVES 4 TO 6 FT OCCASIONALLY
TO 8 FT.
.FRIDAY...EAST WINDS 5 TO 10 KT BECOMING SOUTHEAST. WAVES 1 TO
3 FT.

$$
LMZ761-211000-
MAFOR 2103/
MICHIGAN NORTH 12420 15430. WAVES 2 TO 4 FT BUILDING TO 3 TO 5 FT
OCCASIONALLY TO 7 FT OVERNIGHT. WAVES 4 TO 6 FT OCCASIONALLY TO 8
FT MONDAY AND MONDAY EVENING.

MICHIGAN SOUTH 11310 11410 15420. HAZE LATE THIS EVENING. WAVES 1
TO 3 FT OVERNIGHT. WAVES 2 TO 4 FT MONDAY AND MONDAY EVENING.

$$

JEE









USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.