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 291953
GLFLM

OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
253 PM CDT WED MAR 29 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 OF 30.6 INCHES IS OVER HUDSON BAY WITH
RIDGING EXTENDING SOUTH INTO THE CENTRAL GREAT LAKES. THE RIDGE
WILL GRADUALLY SHIFT TO THE EASTERN LAKES TONIGHT WHILE LOW
PRESSURE OF 29.6 INCHES LIFTS TO NORTHERN MISSOURI BY THURSDAY
MORNING. THE LOW IS EXPECTED TO CONTINUE TO TRACK NORTHEAST
THROUGH THE EASTERN GREAT LAKES SATURDAY. A RIDGE AVERAGING 30.2
INCHES WILL BUILD ACROSS THE CANADIAN PRAIRIES AND UPPER MIDWEST
SATURDAY AND WILL SHIFT TO THE CENTRAL GREAT LAKES ON SUNDAY.
ANOTHER LOW OF 29.6 INCHES WILL LIFT FROM TEXAS SUNDAY NIGHT TO
THE MID ATLANTIC COAST BY TUESDAY.

LMZ261-362-364-366-563-565-567-868-300330-
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-
253 PM CDT WED MAR 29 2017

SHEBOYGAN WI TO PENTWATER MI NORTH...

.TONIGHT...NORTHEAST WINDS 10 TO 20 KT BECOMING EAST TO 30 KT.
SLIGHT CHANCE OF RAIN SHOWERS THIS EVENING...THEN CHANCE OF RAIN
AND SNOW SHOWERS OVERNIGHT. WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT.
.THURSDAY...EAST WINDS TO 30 KT BECOMING NORTHEAST. RAIN WITH
A CHANCE OF SNOW. WAVES 4 TO 7 FT OCCASIONALLY TO 9 FT.
.THURSDAY NIGHT...NORTHEAST GALES TO 35 KT. RAIN AND SNOW LIKELY
IN THE EVENING...THEN CHANCE OF RAIN AND SNOW OVERNIGHT. WAVES
6 TO 9 FT OCCASIONALLY TO 11 FT.
.FRIDAY...NORTHEAST GALES TO 35 KT. WAVES 6 TO 9 FT OCCASIONALLY
TO 11 FT.
.FRIDAY NIGHT...NORTH WINDS 15 TO 25 KT DIMINISHING TO 10 TO
20 KT. WAVES 4 TO 7 FT OCCASIONALLY TO 9 FT SUBSIDING TO 2 TO
4 FT.
.SATURDAY...NORTH WINDS 10 TO 20 KT BECOMING NORTHWEST 10 TO
15 KT. WAVES 1 TO 3 FT.
.SATURDAY NIGHT...NORTH WINDS 5 TO 10 KT BECOMING NORTHEAST.
WAVES 1 FT OR LESS.
.SUNDAY...EAST WINDS 5 TO 10 KT BECOMING SOUTHEAST. WAVES 1 FT OR
LESS.
.MONDAY...EAST WINDS 10 TO 20 KT. WAVES 1 TO 2 FT.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-300330-
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-
253 PM CDT WED MAR 29 2017

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.TONIGHT...NORTHEAST WINDS 15 TO 25 KT BECOMING EAST TO 30 KT.
CHANCE OF RAIN SHOWERS THIS EVENING...THEN RAIN SHOWERS AND
SLIGHT CHANCE OF THUNDERSTORMS OVERNIGHT. WAVES 3 TO 5 FT
OCCASIONALLY TO 7 FT BUILDING TO 6 TO 9 FT OCCASIONALLY TO 11 FT.
.THURSDAY...EAST WINDS TO 30 KT. RAIN IN THE MORNING...THEN RAIN
WITH POSSIBLE RAIN SHOWERS AND THUNDERSTORMS LIKELY IN THE
AFTERNOON. WAVES 7 TO 10 FT OCCASIONALLY TO 13 FT.
.THURSDAY NIGHT...NORTHEAST WINDS TO 30 KT. RAIN LIKELY WITH
POCKETS OF RAIN SHOWERS AND THUNDERSTORMS IN THE EVENING...THEN
RAIN LIKELY OVERNIGHT. WAVES 6 TO 9 FT OCCASIONALLY TO 11 FT.
.FRIDAY...NORTH WINDS TO 30 KT. OCCASIONAL GALE FORCE GUSTS TO 35
KT POSSIBLE. CHANCE OF RAIN AND SNOW IN THE MORNING. WAVES 6 TO 9
FT OCCASIONALLY TO 11 FT.
.FRIDAY NIGHT...NORTH WINDS TO 30 KT DIMINISHING TO 10 TO 20 KT
OVERNIGHT. WAVES 5 TO 8 FT OCCASIONALLY TO 10 FT SUBSIDING TO
4 TO 6 FT OCCASIONALLY TO 8 FT.
.SATURDAY...NORTH WINDS 10 TO 20 KT DIMINISHING TO 10 TO 15 KT.
WAVES 2 TO 4 FT SUBSIDING TO 1 TO 3 FT.
.SATURDAY NIGHT...NORTH WINDS 5 TO 10 KT BECOMING NORTHEAST.
WAVES 1 TO 2 FT.
.SUNDAY...EAST WINDS 10 TO 15 KT INCREASING TO 10 TO 20 KT. WAVES
1 TO 2 FT.
.MONDAY...EAST WINDS 10 TO 20 KT BECOMING NORTHEAST. CHANCE OF
RAIN. WAVES 1 TO 3 FT.

$$

LMZ761-300330-
MAFOR 2921/
MICHIGAN NORTH 12120 11220 11230 11237 13246. CHANCE OF RAIN AND
SNOW SHOWERS LATE THIS EVENING. CHANCE OF SNOW THURSDAY. WAVES 3
TO 5 FT OCCASIONALLY TO 7 FT TONIGHT. WAVES 4 TO 7 FT OCCASIONALLY
TO 9 FT THURSDAY.

MICHIGAN SOUTH 11120 11130 11230 14246 11249. CHANCE OF RAIN
SHOWERS EARLY THIS EVENING. WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT
BUILDING TO 6 TO 9 FT OCCASIONALLY TO 11 FT TONIGHT. WAVES 7 TO
10 FT OCCASIONALLY TO 13 FT THURSDAY.

$$

EXPERIMENTAL MODERNIZED OPEN LAKE FORECAST IS AVAILABLE ONLINE AT
WEATHER.GOV/LOT/GLFTABLE

GRAPHICAL MARINE FORECASTS ARE AVAILABLE ONLINE AT:
WEATHER.GOV/GREATLAKES


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