Great Lakes Forecast
Issued by NWS

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FZUS63 KLOT 272049
GLFLM

OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
249 PM CST MON FEB 27 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 29.6 INCHES OVER COLORADO WILL REACH
SOUTHERN LAKE MICHIGAN AT 29.5 INCHES TUESDAY EVENING. ANOTHER LOW
PRESSURE WILL MOVE FROM THE OZARKS LATE TUESDAY NIGHT TO THE
CENTRAL GREAT LAKES BY MIDDAY WEDNESDAY...MERGING WITH THE FIRST
LOW AND DEEPENING TO 28.9 INCHES OVER NEW BRUNSWICK EARLY THURSDAY
MORNING. THIS LOW WILL CONTINUE TO DEEPEN AS IT CONTINUES NORTH
LATE THIS WEEK. A WEAK LOW AVERAGING 30.1 INCHES WILL PASS SOUTH
OF THE LAKE THURSDAY EVENING...AND THEN A HIGH PRESSURE RIDGE OF
30.6 INCHES WILL SPREAD OVER THE WESTERN GREAT LAKES FRIDAY.

LMZ261-362-364-366-563-565-280430-
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-
249 PM CST MON FEB 27 2017

TWO RIVERS WI TO MANISTEE MI NORTH...

.TONIGHT...SOUTH WINDS 10 TO 20 KT BECOMING SOUTHEAST. CHANCE OF
RAIN SHOWERS OVERNIGHT. WAVES 2 TO 4 FT.
.TUESDAY...SOUTHEAST WINDS 15 TO 25 KT BECOMING SOUTH. RAIN
SHOWERS WITH FREEZING RAIN LIKELY IN THE MORNING...THEN RAIN
SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS IN THE AFTERNOON. WAVES
2 TO 4 FT BUILDING TO 3 TO 5 FT OCCASIONALLY TO 7 FT.
.TUESDAY NIGHT...NORTHWEST WINDS 10 TO 20 KT BECOMING NORTH TO 30
KT AFTER MIDNIGHT...AND THEN INCREASING TO GALES TO 35 KT LATE.
RAIN SHOWERS IN THE EVENING...THEN CHANCE OF RAIN AND SNOW SHOWERS
OVERNIGHT. WAVES BUILDING TO 5 TO 8 FT OCCASIONALLY TO 10 FT.
.WEDNESDAY...NORTH GALES TO 35 KT DIMINISHING TO 30 KT. SNOW
SHOWERS LIKELY IN THE MORNING...THEN CHANCE OF SNOW SHOWERS IN THE
AFTERNOON. WAVES 6 TO 9 FT OCCASIONALLY TO 11 FT.
.WEDNESDAY NIGHT...NORTH WINDS TO 30 KT BECOMING NORTHWEST 10 TO
20 KT OVERNIGHT. WAVES 4 TO 7 FT OCCASIONALLY TO 9 FT SUBSIDING TO
3 TO 5 FT OCCASIONALLY TO 7 FT.
.THURSDAY...NORTHWEST WINDS 10 TO 15 KT. CHANCE OF SNOW SHOWERS.
WAVES 1 TO 3 FT.
.THURSDAY NIGHT...NORTHWEST WINDS 15 TO 25 KT. CHANCE OF SNOW
SHOWERS. WAVES 1 TO 3 FT BUILDING TO 2 TO 4 FT.
.FRIDAY...NORTHWEST WINDS 15 TO 25 KT BECOMING SOUTHWEST 10 TO 20
KT. CHANCE OF SNOW SHOWERS. WAVES 2 TO 4 FT SUBSIDING TO 1 TO 3
FT.
.SATURDAY...SOUTH WINDS TO 30 KT DIMINISHING TO 15 TO 25 KT.
WAVES 4 TO 6 FT OCCASIONALLY TO 8 FT SUBSIDING TO 3 TO 5 FT
OCCASIONALLY TO 7 FT.

$$

LMZ080-567-669-671-673-675-777-779-868-870-872-874-876-878-280430-
LAKE MICHIGAN FROM MICHIGAN CITY IN TO ST. JOSEPH MI 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN FROM TWO RIVERS TO SHEBOYGAN WI 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 PENTWATER TO MANISTEE MI 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-
249 PM CST MON FEB 27 2017

TWO RIVERS WI TO MANISTEE MI SOUTH...

.TONIGHT...SOUTHEAST WINDS 10 TO 20 KT INCREASING TO 15 TO 25 KT
AFTER MIDNIGHT. RAIN SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS
OVERNIGHT. WAVES 2 TO 4 FT.
.TUESDAY...SOUTH WINDS 15 TO 25 KT. CHANCE OF RAIN SHOWERS IN THE
MORNING...THEN CHANCE OF RAIN SHOWERS AND THUNDERSTORMS IN THE
AFTERNOON. WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT.
.TUESDAY NIGHT...SOUTH WINDS 15 TO 25 KT VEERING TO NORTH TO
30 KT. RAIN SHOWERS. WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT
BUILDING TO 4 TO 7 FT OCCASIONALLY TO 9 FT.
.WEDNESDAY...NORTH GALES TO 35 KT BECOMING NORTHWEST TO 30 KT.
SNOW SHOWERS WITH RAIN SHOWERS LIKELY IN THE MORNING...THEN SNOW
SHOWERS LIKELY IN THE AFTERNOON. WAVES 6 TO 9 FT OCCASIONALLY TO
11 FT.
.WEDNESDAY NIGHT...NORTHWEST WINDS TO 30 KT DIMINISHING TO 15 TO
25 KT. CHANCE OF SNOW SHOWERS IN THE EVENING. WAVES 5 TO 8 FT
OCCASIONALLY TO 10 FT SUBSIDING TO 4 TO 6 FT OCCASIONALLY TO
8 FT.
.THURSDAY...WEST WINDS 10 TO 20 KT BECOMING NORTHWEST. CHANCE OF
SNOW AND RAIN SHOWERS IN THE AFTERNOON. WAVES 2 TO 4 FT SUBSIDING
TO 1 TO 3 FT.
.THURSDAY NIGHT...NORTHWEST WINDS 15 TO 25 KT. CHANCE OF SNOW
SHOWERS. WAVES 2 TO 4 FT.
.FRIDAY...NORTHWEST WINDS 15 TO 25 KT BECOMING SOUTHWEST 10 TO
20 KT. CHANCE OF SNOW SHOWERS. WAVES 2 TO 4 FT.
.SATURDAY...SOUTH WINDS TO 30 KT BECOMING SOUTHWEST 15 TO 25 KT.
WAVES 4 TO 6 FT OCCASIONALLY TO 8 FT.

$$

LMZ761-280430-
MAFOR 2722/
MICHIGAN NORTH 13420 11320 11326 11336 12436. CHANCE OF RAIN
SHOWERS AFTER MIDNIGHT TONIGHT. WAVES 2 TO 4 FT TONIGHT. WAVES 2
TO 4 FT BUILDING TO 3 TO 5 FT OCCASIONALLY TO 7 FT TUESDAY.

MICHIGAN SOUTH 13320 12336 13430. CHANCE OF RAIN SHOWERS IN THE
MORNING...THEN CHANCE OF RAIN SHOWERS AND THUNDERSTORMS EARLY
TUESDAY AFTERNOON. WAVES 2 TO 4 FT TONIGHT. WAVES 3 TO 5 FT
OCCASIONALLY TO 7 FT TUESDAY.

$$


JEE

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

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



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