Great Lakes Forecast
Issued by NWS

Home | 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 221922
GLFLM

OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
222 PM CDT WED OCT 22 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...HIGH PRESSURE OF 30.4 INCHES EXTENDED FROM QUEBEC TO
THE WESTERN GREAT LAKES THIS AFTERNOON. THIS RIDGE WILL MOVE EAST
WHILE WEAKENING TO 30.2 INCHES THURSDAY...WHILE AN AREA OF LOW
PRESSURE OF 29.6 INCHES MOVES ACROSS THE SOUTHERN CANADIAN
PRAIRIES. THE LOW WILL FILL THURSDAY NIGHT AS ANOTHER LOW DEVELOPS
ACROSS SASKATCHEWAN...BUT WILL TRAIL A WEAK TROUGH AVERAGING 30.0
INCHES ACROSS LAKE MICHIGAN LATE THURSDAY NIGHT. HIGH PRESSURE
RIDGING OF 30.1 INCHES WILL REDEVELOP OVER THE LAKE FRIDAY AS THE
CANADIAN LOW DEEPENS TO 29.5 INCHES WHILE IT MOVES EAST TOWARD
JAMES BAY AND TRAILS ANOTHER COLD FRONT ACROSS THE LAKE LATE
FRIDAY NIGHT. THIS LOW WILL CONTINUE TO DEEPEN TO 29.3 INCHES AS
IT MOVES INTO SOUTHERN QUEBEC SATURDAY NIGHT...BEFORE ANOTHER WEAK
AREA OF HIGH PRESSURE OF 30.0 INCHES MOVES ACROSS THE WESTERN
LAKES SUNDAY. LOW PRESSURE OF 29.3 INCHES WILL DEVELOP OVER THE
PLAINS DURING THIS PERIOD...AND WILL LIFT NORTHEAST ACROSS THE
UPPER MIDWEST MONDAY.

LMZ261-362-364-366-563-565-567-868-230415-
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-
222 PM CDT WED OCT 22 2014

SHEBOYGAN WI TO PENTWATER MI NORTH

.TONIGHT...SOUTHEAST WINDS AROUND 10 KT EARLY BECOMING SOUTH
10 TO 15 KT. WAVES 1 TO 3 FT.
.THURSDAY...SOUTH WINDS 15 TO 25 KT. CHANCE OF SHOWERS IN THE
AFTERNOON. WAVES BUILDING TO 3 TO 5 FT OCCASIONALLY TO 7 FT.
.THURSDAY NIGHT...SOUTH WINDS 15 TO 25 KT EARLY BECOMING WEST AT
10 TO 20 KT. CHANCE OF SHOWERS IN THE EVENING. WAVES 3 TO 5 FT
OCCASIONALLY TO 7 FT SUBSIDING TO 2 TO 4 FT.
.FRIDAY...SOUTHWEST WINDS 10 TO 15 KT. WAVES 1 TO 3 FT.
.FRIDAY NIGHT...SOUTHWEST WINDS 15 TO 25 KT. WAVES 3 TO 5 FT
OCCASIONALLY TO 7 FT.
.SATURDAY...WEST WINDS 15 TO 25 KT. WAVES 4 TO 6 FT OCCASIONALLY
TO 8 FT.
.SATURDAY NIGHT...NORTHWEST WINDS 15 TO 25 KT. A FEW GUSTS TO 30
KT POSSIBLE. WAVES 4 TO 6 FT OCCASIONALLY TO 8 FT.
.SUNDAY...NORTHWEST WINDS 15 TO 25 KT DIMINISHING TO 10 TO 15 KT
AND BACKING SOUTHWEST. WAVES 4 TO 6 FT OCCASIONALLY TO 8 FT.
.MONDAY...SOUTH WINDS 15 TO 25 KT. CHANCE OF SHOWERS AND SLIGHT
CHANCE OF THUNDERSTORMS. WAVES 4 TO 6 FT OCCASIONALLY TO 8 FT.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-230415-
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-
222 PM CDT WED OCT 22 2014

SHEBOYGAN WI TO PENTWATER MI SOUTH

.TONIGHT...SOUTHEAST WINDS 5 TO 10 KT EARLY BECOMING SOUTH 10 TO
15 KT OVERNIGHT. WAVES 1 TO 3 FT.
.THURSDAY...SOUTH WINDS 10 TO 15 KT INCREASING TO 15 TO 20 KT.
CHANCE OF SHOWERS IN THE AFTERNOON. WAVES 2 TO 4 FT.
.THURSDAY NIGHT...SOUTHWEST WINDS 15 TO 20 KT BECOMING WEST 10 TO
20 KT. SLIGHT CHANCE OF SHOWERS IN THE EVENING. WAVES 2 TO 4 FT.
.FRIDAY...WEST WINDS 10 TO 15 KT BECOMING SOUTHWEST. WAVES 1 TO
3 FT.
.FRIDAY NIGHT...SOUTHWEST WINDS 10 TO 20 KT BECOMING WEST AT 15
TO 25 KT TOWARD MORNING. WAVES 2 TO 4 FT.
.SATURDAY...WEST WINDS 15 TO 25 KT. A FEW GUSTS TO 30 KT POSSIBLE
LATE. WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT.
.SATURDAY NIGHT...NORTHWEST WINDS TO 30 KT. WAVES 4 TO 7 FT
OCCASIONALLY TO 9 FT.
.SUNDAY...NORTHWEST WINDS 10 TO 20 KT DIMINISHING TO 10 TO 15 KT
AND BACKING SOUTH IN THE AFTERNOON. WAVES 4 TO 6 FT OCCASIONALLY
TO 8 FT SUBSIDING TO 3 TO 5 FT OCCASIONALLY TO 7 FT IN THE
AFTERNOON.
.MONDAY...SOUTH WINDS TO 30 KT. SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. WAVES 4 TO 6 FT OCCASIONALLY TO 8 FT.

$$

LMZ761-230415-
MAFOR 2221/
MICHIGAN NORTH 12300 12410 12420 12430. CHANCE OF SHOWERS THURSDAY.
WAVES 1 TO 3 FT TONIGHT AND EARLY THURSDAY MORNING. WAVES
BUILDING TO 3 TO 5 FT OCCASIONALLY TO 7 FT THURSDAY.

MICHIGAN SOUTH 12300 11310 13410 12420. CHANCE OF SHOWERS THURSDAY.
WAVES 1 TO 3 FT TONIGHT. WAVES 2 TO 4 FT THURSDAY.

$$

RATZER






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