Great Lakes Forecast
Issued by NWS

Home | Current Version | Previous Version | Graphics & Text | 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
000
FZUS63 KLOT 220130
GLFLM

OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
830 PM CDT TUE APR 21 2015

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...LOW PRESSURE OF 29.3 INCHES CENTERED OVER ONTARIO
WILL GRADUALLY MOVE EAST TO THE NEW ENGLAND COAST BY THURSDAY.
A LARGE RIDGE OF HIGH PRESSURE AVERAGING 30.2 INCHES WILL BUILD
THEN ACROSS THE CANADIAN PRAIRIES AND SOUTHEAST INTO THE OHIO
VALLEY WHERE IT WILL GENERALLY REMAIN THROUGH THE END OF THE WEEK.

LMZ261-362-364-366-563-565-567-868-220915-
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-
830 PM CDT TUE APR 21 2015

SHEBOYGAN WI TO PENTWATER MI NORTH

.REST OF TONIGHT...WEST WINDS 15 TO 25 KT BECOMING NORTHWEST
OVERNIGHT. CHANCE OF RAIN AND SNOW SHOWERS. WAVES 4 TO 7 FT
OCCASIONALLY TO 9 FT.
.WEDNESDAY...NORTHWEST WINDS 15 TO 25 KT DIMINISHING TO 10 TO
20 KT. CHANCE OF RAIN AND SNOW SHOWERS. WAVES 4 TO 7 FT
OCCASIONALLY TO 9 FT.
.WEDNESDAY NIGHT...NORTHWEST WINDS 10 TO 20 KT. CHANCE OF SNOW
SHOWERS. WAVES SUBSIDING TO 2 TO 4 FT.
.THURSDAY...NORTHWEST WINDS 10 TO 20 KT BECOMING WEST 10 TO 15
KT. CHANCE OF RAIN AND SNOW SHOWERS. WAVES 2 TO 4 FT.
.THURSDAY NIGHT...WEST WINDS 10 TO 15 KT BECOMING NORTHWEST.
WAVES 1 TO 3 FT.
.FRIDAY...NORTHWEST WINDS 10 TO 15 KT BECOMING NORTH. WAVES 1 TO
3 FT.
.FRIDAY NIGHT...NORTHEAST WINDS 10 TO 15 KT. WAVES 1 TO 3 FT.
.SATURDAY AND SUNDAY...NORTH WINDS 10 TO 15 KT. WAVES 1 TO 3 FT.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-220915-
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-
830 PM CDT TUE APR 21 2015

SHEBOYGAN WI TO PENTWATER MI SOUTH

.REST OF TONIGHT...WEST WINDS TO 30 KT BECOMING NORTHWEST
OVERNIGHT. SLIGHT CHANCE OF RAIN SHOWERS. WAVES 5 TO 8 FT
OCCASIONALLY TO 10 FT.
.WEDNESDAY...NORTHWEST WINDS TO 30 KT BECOMING WEST 10 TO 20 KT.
SLIGHT CHANCE OF SHOWERS. WAVES SUBSIDING TO 4 TO 6 FT
OCCASIONALLY TO 8 FT.
.WEDNESDAY NIGHT...NORTHWEST WINDS 10 TO 20 KT. WAVES SUBSIDING
TO 2 TO 4 FT.
.THURSDAY...NORTHWEST WINDS 10 TO 20 KT BECOMING WEST 10 TO
15 KT. WAVES 2 TO 4 FT.
.THURSDAY NIGHT...WEST WINDS 10 TO 15 KT BECOMING NORTH. WAVES
1 TO 3 FT.
.FRIDAY...NORTH WINDS 5 TO 10 KT BECOMING NORTHEAST 10 TO 15 KT.
WAVES 1 TO 3 FT.
.FRIDAY NIGHT...NORTHEAST WINDS 10 TO 15 KT. WAVES 1 TO 3 FT.
.SATURDAY...NORTHEAST WINDS 10 TO 20 KT BECOMING NORTH. WAVES
2 TO 4 FT.
.SUNDAY...NORTH WINDS 10 TO 20 KT. WAVES 2 TO 4 FT.

$$
LMZ761-220915-
MAFOR 2204/
MICHIGAN NORTH 11620 13730 12630 11730 11720. CHANCE OF RAIN AND
SNOW SHOWERS. WAVES 4 TO 7 FT OCCASIONALLY TO 9 FT OVERNIGHT AND
WEDNESDAY SUBSIDING TO 3 TO 5 FT OCCASIONALLY TO 7 FT WEDNESDAY
EVENING.

MICHIGAN SOUTH 11630 11640 12740 11640 12630 11720. WAVES 5 TO 8
FT OCCASIONALLY TO 10 FT OVERNIGHT AND WEDNESDAY...SUBSIDING TO 3
TO 5 FT OCCASIONALLY TO 7 FT WEDNESDAY EVENING.

$$

RATZER


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