Great Lakes Forecast
Issued by NWS

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FZUS63 KLOT 240237
GLFLM

OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
837 PM CST TUE DEC 23 2014

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 29.7 INCHES OVER CENTRAL WISCONSIN WILL
MOVE NORTHEAST AND DISSIPATE OVER THE UPPER PENINSULA TONIGHT. LOW
PRESSURE OF 29.5 ALONG THE LOWER MISSISSIPPI VALLEY WILL MOVE
NORTH TO NEAR FORT WAYNE WEDNESDAY AFTERNOON...AS IT DEEPENS TO
29.2 INCHES. THE LOW WILL CONTINUE TO LAKE HURON WEDNESDAY NIGHT
DEEPENING FURTHER TO 28.9 INCHES. THIS LOW WILL MOVE NORTH INTO
QUEBEC ON THURSDAY AS A RIDGE OF HIGH PRESSURE MOVES ACROSS THE
OHIO VALLEY. LOW PRESSURE WILL MOVE FROM THE SOUTH CENTRAL PLAINS
THURSDAY EVENING TO THE NORTHERN LAKES FRIDAY AFTERNOON. THE LOW
WILL CONTINUE INTO QUEBEC SATURDAY WITH A TRAILING COLD FRONT
MOVING ACROSS THE LAKE FRIDAY NIGHT.

LMZ261-362-364-366-563-565-567-868-241100-
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-
837 PM CST TUE DEC 23 2014

SHEBOYGAN WI TO PENTWATER MI NORTH

...GALE WARNING IN EFFECT FROM WEDNESDAY AFTERNOON THROUGH LATE
WEDNESDAY NIGHT...

.REST OF TONIGHT...SOUTH WINDS 10 TO 15 KT BECOMING VARIABLE 5 TO
10 KT LATE. SLIGHT CHANCE OF RAIN. WAVES 3 TO 5 FT OCCASIONALLY TO
7 FT SUBSIDING TO 2 TO 4 FT OVERNIGHT.
.WEDNESDAY...NORTHEAST WINDS 10 TO 15 KT BECOMING NORTH TO 30 KT
BY EARLY AFTERNOON...THEN TO GALES TO 35 KT BY EVENING. SLIGHT
CHANCE OF RAIN OR SNOW IN THE MORNING...THEN RAIN OR SNOW LIKELY
IN THE AFTERNOON. WAVES 1 TO 3 FT BUILDING TO 5 TO 7 FT
OCCASIONALLY TO 9 FT IN THE AFTERNOON.
.WEDNESDAY NIGHT...NORTHWEST GALES TO 35 KT. SNOW IN THE
EVENING...THEN CHANCE OF SNOW SHOWERS OVERNIGHT. WAVES 7 TO 10 FT
OCCASIONALLY TO 13 FT.
.THURSDAY...WEST WINDS TO 30 KT BECOMING SOUTHWEST 15 TO 25 KT.
SLIGHT CHANCE OF SNOW SHOWERS IN THE MORNING. WAVES 5 TO 8 FT
OCCASIONALLY TO 10 FT SUBSIDING TO 3 TO 6 FT OCCASIONALLY TO 8 FT
IN THE AFTERNOON.
.THURSDAY NIGHT...SOUTHWEST WINDS 15 TO 25 KT. WAVES 3 TO 5 FT
OCCASIONALLY TO 7 FT.
.FRIDAY...SOUTHWEST WINDS 15 TO 25 KT. WAVES 3 TO 5 FT
OCCASIONALLY TO 7 FT.
.FRIDAY NIGHT...SOUTHWEST WINDS 15 TO 25 KT BECOMING WEST. CHANCE
OF RAIN OR SNOW. WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT.
.SATURDAY...NORTHWEST WINDS 15 TO 25 KT. CHANCE OF SNOW. WAVES
3 TO 5 FT OCCASIONALLY TO 7 FT.
.SUNDAY...NORTHWEST WINDS 10 TO 15 KT. SLIGHT CHANCE OF SNOW.
WAVES 2 TO 4 FT.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-241100-
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-
837 PM CST TUE DEC 23 2014

SHEBOYGAN WI TO PENTWATER MI SOUTH

...GALE WARNING IN EFFECT FROM WEDNESDAY AFTERNOON THROUGH LATE
WEDNESDAY NIGHT...

.REST OF TONIGHT...SOUTHWEST WINDS 10 TO 15 KT DIMINISHING TO 5
TO 10 KT AFTER MIDNIGHT...THEN VEERING TO NORTH 10 TO 15 KT LATE.
SLIGHT CHANCE OF RAIN. WAVES 2 TO 4 FT SUBSIDING TO 1 TO 3 FT
OVERNIGHT.
.WEDNESDAY...NORTHEAST WINDS 10 TO 20 KT INCREASING TO 30 KT LATE
IN THE MORNING...THEN BECOMING NORTH GALES TO 35 KT IN THE
AFTERNOON. RAIN OR SNOW. WAVES 1 TO 3 FT BUILDING TO 5 TO 8 FT
OCCASIONALLY TO 10 FT.
.WEDNESDAY NIGHT...NORTHWEST GALES TO 35 KT BECOMING WEST TO 30
KT OVERNIGHT. SNOW IN THE EVENING...THEN CHANCE OF SNOW SHOWERS
OVERNIGHT. WAVES 8 TO 11 FT OCCASIONALLY TO 14 FT.
.THURSDAY...WEST WINDS TO 30 KT BECOMING SOUTHWEST 15 TO 25 KT.
SLIGHT CHANCE OF SNOW SHOWERS IN THE MORNING. WAVES SUBSIDING TO
4 TO 7 FT OCCASIONALLY TO 9 FT IN THE AFTERNOON.
.THURSDAY NIGHT...SOUTHWEST WINDS 15 TO 25 KT. WAVES 4 TO 6 FT
OCCASIONALLY TO 8 FT.
.FRIDAY...SOUTH WINDS 15 TO 25 KT. WAVES 4 TO 6 FT OCCASIONALLY
TO 8 FT.
.FRIDAY NIGHT...SOUTHWEST WINDS TO 30 KT. SLIGHT CHANCE OF RAIN
OR SNOW. WAVES 4 TO 6 FT OCCASIONALLY TO 8 FT.
.SATURDAY...WEST WINDS TO 30 KT. CHANCE OF SNOW OR RAIN. WAVES 4
TO 7 FT OCCASIONALLY TO 9 FT.
.SUNDAY...NORTHWEST WINDS 10 TO 20 KT. SLIGHT CHANCE OF SNOW.
WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT.

$$
LMZ761-241100-
MAFOR 2404/
MICHIGAN NORTH...GALE WARNING IN EFFECT...
11410 11400 11900 11110 11130 11847 12857. WAVES 3 TO 5 FT
OCCASIONALLY TO 7 FT SUBSIDING TO 2 TO 4 FT OVERNIGHT. WAVES 1 TO
3 FT BUILDING TO 5 TO 7 FT OCCASIONALLY TO 9 FT WEDNESDAY...THEN 7
TO 10 FT OCCASIONALLY TO 13 FT WEDNESDAY EVENING.

MICHIGAN SOUTH...GALE WARNING IN EFFECT...
11510 11600 11110 11127 11147 12857 11757. WAVES 2 TO 4 FT
SUBSIDING TO 1 TO 3 FT OVERNIGHT. WAVES BUILDING TO 5 TO 8 FT
OCCASIONALLY TO 10 FT WEDNESDAY...THEN TO 8 TO 11 FT OCCASIONALLY
TO 14 FT WEDNESDAY EVENING.

$$

BMD



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