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
224
FZUS63 KLOT 301327
GLFLM

OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
827 AM CDT TUE AUG 30 2016

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 30.2 INCH RIDGE STRETCHES FROM NORTHERN ILLINOIS TO
LAKE ONTARIO EARLY THIS MORNING WHILE LOW PRESSURE OF 29.8
INCHES IS OVER HUDSON BAY WITH A TRAILING COLD FRONT STRETCHING
SOUTH ACROSS LAKE SUPERIOR. THE HIGH WILL SHIFT EAST TODAY AND THE
COLD FRONT WILL SAG SOUTH ACROSS LAKE MICHIGAN TODAY AND TONIGHT.
HIGH PRESSURE OF 30.4 INCHES WILL BUILD ACROSS MANITOBA TONIGHT
AND CONTINUE SOUTHEAST ACROSS THE CENTRAL GREAT LAKES REGION BY
FRIDAY...THEN TO THE EASTERN LAKES SATURDAY. LOW PRESSURE OF 29.5
WILL MOVE INTO MANITOBA SUNDAY THEN LIFT TO HUDSON BAY MONDAY.

LMZ261-362-364-366-563-565-567-868-302115-
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-
827 AM CDT TUE AUG 30 2016

SHEBOYGAN WI TO PENTWATER MI NORTH...

.REST OF TODAY...SOUTHWEST WINDS 10 TO 15 KT BECOMING NORTHWEST
LATE THIS AFTERNOON. CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES 1
TO 3 FT.
.TONIGHT...NORTH WINDS 15 TO 20 KT OCCASIONALLY GUSTING TO 25 KT.
CHANCE OF SHOWERS AND THUNDERSTORMS IN THE EVENING. WAVES 2 TO 4
FT.
.WEDNESDAY...NORTH WINDS 10 TO 15 KT INCREASING TO 15 TO 25 KT.
WAVES 2 TO 4 FT.
.WEDNESDAY NIGHT...NORTH WINDS 15 TO 25 KT. WAVES 4 TO 6 FT
OCCASIONALLY TO 8 FT.
.THURSDAY...NORTH WINDS 15 TO 25 KT. WAVES 3 TO 5 FT OCCASIONALLY
TO 7 FT.
.THURSDAY NIGHT...NORTHEAST WINDS 15 TO 25 KT DIMINISHING TO
10 TO 20 KT. WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT SUBSIDING TO
2 TO 4 FT.
.FRIDAY...NORTHEAST WINDS 5 TO 10 KT. WAVES 1 TO 2 FT.
.SATURDAY...SOUTH WINDS 10 TO 15 KT INCREASING TO 10 TO 20 KT.
WAVES 1 TO 3 FT.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-302115-
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-
827 AM CDT TUE AUG 30 2016

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.REST OF TODAY...SOUTH WINDS 10 TO 15 KT BECOMING SOUTHWEST 5 TO
10 KT THIS AFTERNOON. CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES
1 TO 2 FT.
.TONIGHT...SOUTHWEST WINDS 5 TO 10 KT BECOMING NORTH 10 TO 20 KT
WITH OCCASIONAL GUSTS TO 25 KT AFTER MIDNIGHT. CHANCE OF SHOWERS
AND THUNDERSTORMS. WAVES BUILDING TO 2 TO 4 FT.
.WEDNESDAY...NORTH WINDS 10 TO 20 KT INCREASING TO 15 TO 25 KT.
WAVES 2 TO 4 FT BUILDING TO 3 TO 5 FT OCCASIONALLY TO 7 FT.
.WEDNESDAY NIGHT...NORTH WINDS 15 TO 25 KT. WAVES 4 TO 6 FT
OCCASIONALLY TO 8 FT.
.THURSDAY...NORTH WINDS 10 TO 20 KT INCREASING TO 30 KT IN THE
AFTERNOON. WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT BUILDING TO 4 TO
6 FT OCCASIONALLY TO 8 FT.
.THURSDAY NIGHT...NORTHEAST WINDS TO 30 KT DIMINISHING TO 10 TO
20 KT OVERNIGHT. WAVES 4 TO 7 FT OCCASIONALLY TO 9 FT SUBSIDING
TO 4 TO 6 FT OCCASIONALLY TO 8 FT.
.FRIDAY...NORTHEAST WINDS 5 TO 10 KT. WAVES 2 TO 4 FT SUBSIDING
TO 1 TO 2 FT.
.SATURDAY...SOUTH WINDS 10 TO 15 KT. WAVES 1 TO 2 FT.

$$
LMZ761-302115-
MAFOR 3015/
MICHIGAN NORTH 11510 11500 11610 11720 12830 19830 11820 19830
11810. CHANCE OF SHOWERS AND THUNDERSTORMS TODAY AND TONIGHT.
WAVES 1 TO 3 FT TODAY. WAVES 2 TO 4 FT TONIGHT AND WEDNESDAY
MORNING.

MICHIGAN SOUTH 11419 13500 11610 11730 12820 19830. CHANCE OF
SHOWERS AND THUNDERSTORMS TODAY AND TONIGHT. WAVES 1 TO 2 FT
TODAY. WAVES BUILDING TO 2 TO 4 FT TONIGHT AND WEDNESDAY MORNING.

$$


KJB

EXPERIMENTAL MODERNIZED OPEN LAKE FORECAST IS AVAILABLE ONLINE AT
WEATHER.GOV/LOT/GLFTABLE (ALL LOWER CASE)

GRAPHICAL MARINE FORECASTS ARE AVAILABLE ONLINE AT
WEATHER.GOV/GREATLAKES (ALL LOWER CASE)



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