Great Lakes Forecast
Issued by NWS

Home | Current Version | Previous Version | Graphics & Text | Print | Product List | Glossary Off
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

000
FZUS63 KLOT 280753
GLFLM

OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
253 AM CDT FRI APR 28 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...LOW PRESSURE OF 29.3 INCHES OVER JAMES BAY WILL
CONTINUE TO LIFT NORTH TODAY WHILE WEAK HIGH PRESSURE OF 29.9
INCHES DEVELOPS ACROSS THE LAKE. LARGER HIGH PRESSURE WILL THEN
DEVELOP AND MOVE ACROSS ONTARIO SATURDAY WHILE LOW PRESSURE OF
29.5 INCHES DEVELOPS OVER THE SOUTHERN PLAINS. THIS LOW WILL
DEEPEN TO 29.3 INCHES AS IT LIFTS INTO IOWA SUNDAY NIGHT...AND TO
29.2 INCHES AS IT MOVES TO THE WESTERN GREAT LAKES ON MONDAY. A
TRAILING COLD FRONT WILL MOVE ACROSS THE LAKE MONDAY NIGHT WHILE
THE LOW MOVES TO QUEBEC TUESDAY.

LMZ261-362-364-366-563-565-567-868-281530-
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 AM CDT FRI APR 28 2017

SHEBOYGAN WI TO PENTWATER MI NORTH...

.TODAY...WEST WINDS TO 30 KT BECOMING SOUTHWEST 15 TO 25 KT THIS
MORNING...THEN DIMINISHING TO 10 TO 20 KT. WAVES 4 TO 6 FT
OCCASIONALLY TO 8 FT SUBSIDING TO 3 TO 5 FT OCCASIONALLY TO 7 FT.
.TONIGHT...SOUTHWEST WINDS 10 TO 15 KT VEERING TO NORTHWEST 10 TO
20 KT LATE IN THE EVENING...THEN BECOMING NORTH 15 TO 25 KT
OVERNIGHT. CHANCE OF RAIN SHOWERS IN THE EVENING...THEN SLIGHT
CHANCE OF RAIN SHOWERS OVERNIGHT. WAVES 2 TO 4 FT BUILDING TO
3 TO 5 FT OCCASIONALLY TO 7 FT.
.SATURDAY...NORTH WINDS 15 TO 25 KT INCREASING TO 30 KT. WAVES
3 TO 5 FT OCCASIONALLY TO 7 FT BUILDING TO 4 TO 7 FT OCCASIONALLY
TO 9 FT.
.SATURDAY NIGHT...NORTHEAST WINDS TO 30 KT. CHANCE OF RAIN
SHOWERS. WAVES 4 TO 7 FT OCCASIONALLY TO 9 FT.
.SUNDAY...EAST WINDS TO 30 KT BECOMING NORTHEAST GALES TO 35 KT.
RAIN SHOWERS IN THE MORNING...THEN RAIN SHOWERS LIKELY IN THE
AFTERNOON. WAVES 4 TO 7 FT OCCASIONALLY TO 9 FT BUILDING TO 6 TO
9 FT OCCASIONALLY TO 11 FT.
.SUNDAY NIGHT...NORTHEAST GALES TO 35 KT BECOMING EAST GALES TO
40 KT. RAIN SHOWERS. WAVES 6 TO 9 FT OCCASIONALLY TO 11 FT.
.MONDAY...SOUTHEAST GALES TO 35 KT BECOMING SOUTH TO 30 KT.
CHANCE OF RAIN SHOWERS. WAVES 5 TO 8 FT OCCASIONALLY TO 10 FT
SUBSIDING TO 4 TO 6 FT OCCASIONALLY TO 8 FT.
.TUESDAY...WEST WINDS TO 30 KT. CHANCE OF RAIN SHOWERS. WAVES
5 TO 8 FT OCCASIONALLY TO 10 FT.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-281530-
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 AM CDT FRI APR 28 2017

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.TODAY...WEST WINDS 10 TO 20 KT BECOMING NORTHEAST 10 TO 15 KT.
CHANCE OF RAIN SHOWERS THIS AFTERNOON. WAVES 2 TO 4 FT SUBSIDING
TO 1 TO 3 FT.
.TONIGHT...NORTHEAST WINDS 10 TO 15 KT INCREASING TO 30 KT.
CHANCE OF RAIN SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS IN THE
EVENING...THEN SLIGHT CHANCE OF RAIN SHOWERS OVERNIGHT. WAVES
BUILDING TO 4 TO 6 FT OCCASIONALLY TO 8 FT.
.SATURDAY...NORTHEAST WINDS TO 30 KT. CHANCE OF RAIN SHOWERS.
WAVES 6 TO 9 FT OCCASIONALLY TO 11 FT.
.SATURDAY NIGHT...NORTHEAST WINDS TO 30 KT. OCCASIONAL GALES TO
35 KT. RAIN SHOWERS LIKELY IN THE EVENING...THEN RAIN SHOWERS
OVERNIGHT. WAVES 6 TO 9 FT OCCASIONALLY TO 11 FT.
.SUNDAY...EAST WINDS TO 30 KT BECOMING NORTHEAST. RAIN SHOWERS
WITH A CHANCE OF THUNDERSTORMS IN THE MORNING...THEN RAIN SHOWERS
IN THE AFTERNOON. WAVES 5 TO 8 FT OCCASIONALLY TO 10 FT.
.SUNDAY NIGHT...EAST WINDS TO 30 KT BECOMING SOUTHEAST 15 TO
25 KT. RAIN SHOWERS. WAVES 4 TO 7 FT OCCASIONALLY TO 9 FT.
.MONDAY...SOUTH WINDS TO 30 KT. CHANCE OF RAIN SHOWERS. WAVES
4 TO 6 FT OCCASIONALLY TO 8 FT.
.TUESDAY...WEST GALES TO 35 KT. WAVES 6 TO 9 FT OCCASIONALLY TO
11 FT.

$$

LMZ761-281530-
MAFOR 2809/
MICHIGAN NORTH 12640 12530 11520 11510 11720 11830. CHANCE OF
RAIN SHOWERS LATE TONIGHT. WAVES 4 TO 6 FT OCCASIONALLY TO 8 FT
SUBSIDING TO 3 TO 5 FT OCCASIONALLY TO 7 FT TODAY. WAVES 2 TO 4
FT BUILDING TO 3 TO 5 FT OCCASIONALLY TO 7 FT TONIGHT.

MICHIGAN SOUTH 11630 11620 11510 11320 12110 11120 11830. CHANCE
OF RAIN SHOWERS TODAY. CHANCE OF SHOWERS LATE TONIGHT. WAVES 2 TO
4 FT SUBSIDING TO 1 TO 3 FT TODAY. WAVES BUILDING TO 4 TO 6 FT
OCCASIONALLY TO 8 FT TONIGHT.

$$


RODRIGUEZ

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.