Great Lakes Forecast
Issued by NWS

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000
FZUS63 KLOT 270851
GLFLM

OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
251 AM CST SAT DEC 27 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 29.9 INCHES OVER EASTERN IOWA WILL
TRACK QUICKLY NORTHEAST ACROSS NORTHERN LAKE MICHIGAN TODAY AND
INTO SOUTHERN QUEBEC TONIGHT...DEEPENING ALONG THE WAY TO 29.5
INCHES TONIGHT. A COLD FRONT TRAILING SOUTH FROM THIS LOW WILL
MOVE ACROSS THE LAKE THIS AFTERNOON. WEAK RIDGING WILL BE IN PLACE
OVER THE REGION IN THE WAKE OF THIS FRONT MONDAY...BEFORE MASSIVE
ARCTIC HIGH PRESSURE OF 31.1 INCHES OVER ALBERTA BEGINS SPREADING
SOUTH INTO THE PLAINS EXTENDED EAST ACROSS THE GREAT LAKES
TUESDAY. STRONG LOW PRESSURE OF 29.2 INCHES WILL MOVE SOUTH INTO
HUDSON BAY WEDNESDAY AS THE HIGH WEAKENS A BIT TO 30.7 INCHES AS
IT SETTLES SOUTH INTO THE SOUTHERN PLAINS.

LMZ261-362-271645-
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-
251 AM CST SAT DEC 27 2014

ROCK ISLAND PASSAGE TO CHARLEVOIX MI NORTH

.TODAY...NORTHEAST WINDS 10 TO 15 KT BACKING TO NORTHWEST AND
INCREASING TO 20 TO 25 KT THIS AFTERNOON. RAIN...MAINLY THIS
MORNING. WAVES 1 TO 2 FT BUILDING TO 2 TO 4 FT THIS AFTERNOON.
.TONIGHT...WEST WINDS TO 30 KT DIMINISHING TO 15 TO 25 KT. WAVES
3 TO 5 FT OCCASIONALLY TO 7 FT.
.SUNDAY...WEST WINDS 15 TO 25 KT. SLIGHT CHANCE OF SNOW SHOWERS
IN THE AFTERNOON. WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT.
.SUNDAY NIGHT...NORTHWEST WINDS 10 TO 15 KT BECOMING NORTH.
CHANCE OF SNOW SHOWERS. WAVES 2 TO 4 FT.
.MONDAY AND MONDAY NIGHT...NORTH WINDS 10 TO 20 KT. CHANCE OF
SNOW SHOWERS. WAVES 1 TO 3 FT.
.TUESDAY...NORTHWEST WINDS 15 TO 25 KT. CHANCE OF SNOW SHOWERS.
WAVES 1 TO 3 FT BUILDING TO 2 TO 4 FT IN THE AFTERNOON.
.WEDNESDAY...WEST WINDS TO 30 KT INCREASING TO GALES TO 35 KT IN
THE AFTERNOON. CHANCE OF SNOW SHOWERS. WAVES 4 TO 7 FT
OCCASIONALLY TO 9 FT BUILDING TO 7 TO 10 FT OCCASIONALLY TO 13 FT
IN THE AFTERNOON.

$$

LMZ364-366-563-565-567-868-271645-
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-
251 AM CST SAT DEC 27 2014

ROCK ISLAND PASSAGE TO CHARLEVOIX MI SOUTH TO SHEBOYGAN WI TO
PENTWATER MI

.TODAY...EAST WINDS AROUND 10 KT BECOMING SOUTH TO 30 KT LATE
THIS MORNING...THEN BECOMING WEST TO 30 KT THIS AFTERNOON.
RAIN...MAINLY THIS MORNING. WAVES 1 TO 3 FT QUICKLY BUILDING TO 3
TO 5 FT OCCASIONALLY TO 7 FT THIS MORNING...THEN BUILDING TO 4 TO
6 FT OCCASIONALLY TO 8 FT THIS AFTERNOON.
.TONIGHT...WEST WINDS TO 30 KT GRADUALLY EASING TO 15 TO 25 KT.
WAVES 4 TO 6 FT OCCASIONALLY TO 8 FT.
.SUNDAY...NORTHWEST WINDS 10 TO 20 KT. WAVES 3 TO 5 FT
OCCASIONALLY TO 7 FT.
.SUNDAY NIGHT...NORTH WINDS 10 TO 20 KT. WAVES 2 TO 4 FT.
.MONDAY AND MONDAY NIGHT...NORTH WINDS 15 TO 25 KT. CHANCE OF
SNOW SHOWERS. WAVES 3 TO 6 FT OCCASIONALLY TO 8 FT.
.TUESDAY...NORTHWEST WINDS TO 30 KT. CHANCE OF SNOW SHOWERS.
WAVES 4 TO 6 FT OCCASIONALLY TO 8 FT.
.WEDNESDAY...WEST WINDS TO 30 KT INCREASING TO GALES TO 35 KT IN
THE AFTERNOON. CHANCE OF SNOW SHOWERS. WAVES 6 TO 9 FT
OCCASIONALLY TO 11 FT.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-271645-
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-
251 AM CST SAT DEC 27 2014

SHEBOYGAN WI TO PENTWATER MI SOUTH

.TODAY...SOUTH WINDS 15 TO 25 KT INCREASING TO 30 KT THIS
MORNING...THEN SHIFTING TO WEST AND BRIEFLY INCREASING TO GALES TO
35 KT BEFORE SUBSIDING TO 30 KT. CHANCE OF RAIN. WAVES 3 TO 5 FT
OCCASIONALLY TO 7 FT BUILDING TO 4 TO 7 FT OCCASIONALLY TO 9 FT
THIS AFTERNOON.
.TONIGHT...NORTHWEST WINDS TO 30 KT DIMINISHING TO 10 TO 20 KT
LATE. WAVES 4 TO 7 FT OCCASIONALLY TO 9 FT SUBSIDING TO 3 TO 6 FT
OCCASIONALLY TO 8 FT OVERNIGHT.
.SUNDAY...NORTHWEST WINDS 10 TO 20 KT. WAVES 3 TO 5 FT
OCCASIONALLY TO 7 FT SUBSIDING TO 2 TO 4 FT IN THE AFTERNOON.
.SUNDAY NIGHT...NORTHWEST WINDS 5 TO 10 KT BECOMING NORTHEAST
10 TO 15 KT. WAVES 1 TO 3 FT.
.MONDAY...NORTHEAST WINDS INCREASING TO 15 TO 20 KT. CHANCE OF
SNOW SHOWERS IN THE AFTERNOON. WAVES BUILDING TO 2 TO 4 FT IN THE
AFTERNOON.
.MONDAY NIGHT...NORTHEAST WINDS TO 30 KT. CHANCE OF SNOW SHOWERS.
WAVES BUILDING TO 4 TO 7 FT OCCASIONALLY TO 9 FT OVERNIGHT.
.TUESDAY...NORTH WINDS TO 30 KT BECOMING NORTHWEST. CHANCE OF
SNOW SHOWERS. WAVES 5 TO 8 FT OCCASIONALLY TO 10 FT.
.WEDNESDAY...WEST WINDS TO 30 KT. CHANCE OF SNOW SHOWERS. WAVES 5
TO 8 FT OCCASIONALLY TO 10 FT.

$$

LMZ761-271645-
MAFOR 2710/
MICHIGAN FAR NORTH 10906 13116 12730 12640 11630. WAVES 1 TO 2 FT
BUILDING TO 2 TO 4 FT THIS AFTERNOON...THEN BUILDING TO 3 TO 5 FT
OCCASIONALLY TO 7 FT TONIGHT.

MICHIGAN CENTRAL AND NORTH 10216 11316 11336 12446 13640 11630.
WAVES 1 TO 3 FT QUICKLY BUILDING TO 3 TO 5 FT OCCASIONALLY TO 7 FT
THIS MORNING...THEN BUILDING TO 4 TO 6 FT OCCASIONALLY TO 8 FT
THIS AFTERNOON AND CONTINUING TONIGHT.

MICHIGAN SOUTH 12430 11440 12640 19650 11740 12730. CHANCE OF
RAIN TODAY. WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT BUILDING TO 4 TO
7 FT OCCASIONALLY TO 9 FT THIS AFTERNOON AND CONTINUING THIS
EVENING BEFORE SUBSIDING TO 3 TO 6 FT OCCASIONALLY TO 8 FT
OVERNIGHT.

$$

IZZI



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