Great Lakes Forecast
Issued by NWS

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000
FZUS63 KLOT 160746
GLFLM

OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
246 AM CDT THU OCT 16 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 AVERAGING 29.8 OVER THE OHIO VALLEY WILL
SHIFT NORTHWARD OVER THE EASTERN GREAT LAKES TODAY. FOLLOWING THE
PASSAGE OF A WEAK SURFACE RIDGE OF HIGH PRESSURE OVER THE WESTERN
LAKES TODAY...A 29.4 INCH LOW OVER NORTH DAKOTA WILL SHIFT
EASTWARD ALONG THE INTERNATIONAL BOARDER TODAY. THIS LOW WILL
APPROACH LAKE SUPERIOR BY LATE TONIGHT. BY FRIDAY THIS NEW LOW
PRESSURE IS FORECAST TO MERGE WITH THE REMNANTS OF THE EASTERN
GREAT LAKES LOW OVER ONTARIO. AS THIS OCCURS...THE LOW IS FORECAST
TO DEEPEN TO AROUND 29.1 INCHES...WHILE MOVING JUST EAST OF JAMES
BAY FRIDAY NIGHT INTO SATURDAY. AN ASSOCIATED STRONG COLD FRONT
WILL PUSH OVER THE LAKE BY FRIDAY EVENING.

LMZ261-362-364-366-563-565-567-868-161515-
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-
246 AM CDT THU OCT 16 2014

SHEBOYGAN WI TO PENTWATER MI NORTH

...GALE WATCH IN EFFECT FROM FRIDAY EVENING THROUGH SATURDAY
EVENING...

.TODAY...NORTH WINDS 10 TO 15 KT BECOMING WEST 5 TO 10 KT.
ISOLATED SHOWERS. WAVES 1 TO 3 FT.
.TONIGHT...SOUTHWEST WINDS 10 TO 15 KT. WAVES 1 TO 3 FT.
.FRIDAY...WEST WINDS 10 TO 20 KT BECOMING NORTHWEST TO 30 KT BY LATE
AFTERNOON. CHANCE OF SHOWERS. WAVES 2 TO 4 FT BUILDING TO 3 TO 6
FT OCCASIONALLY TO 8 FT LATE.
.FRIDAY NIGHT...NORTHWEST GALES TO 35 KT BECOMING NORTH. GUSTS TO
40 KT GALES POSSIBLE. SHOWERS LIKELY. WAVES BUILDING TO 7 TO 10 FT
OCCASIONALLY TO 13 FT.
.SATURDAY...NORTH GALES TO 35 KT. SHOWERS LIKELY IN THE
MORNING... THEN CHANCE OF SHOWERS IN THE AFTERNOON. WAVES 8 TO 11 FT
OCCASIONALLY TO 14 FT.
.SATURDAY NIGHT...NORTHWEST WINDS 20 TO 25 KT EASING TO 10 TO 20
KT OVERNIGHT. WAVES 5 TO 8 FT OCCASIONALLY 10 FT SUBSIDING TO 3
TO 5 FT OCCASIONALLY TO 7 FT OVERNIGHT.
.SUNDAY...WEST WINDS 10 TO 15 KT BECOMING SOUTHWEST. WAVES 1 TO
3 FT.
.MONDAY...SOUTHWEST WINDS 10 TO 15 KT VEERING TO NORTH 15 TO
20 KT. CHANCE OF SHOWERS. WAVES 2 TO 4 FT.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-161515-
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-
246 AM CDT THU OCT 16 2014

SHEBOYGAN WI TO PENTWATER MI SOUTH

...GALE WATCH IN EFFECT FROM FRIDAY EVENING THROUGH SATURDAY
AFTERNOON...

.TODAY...NORTH WINDS 10 TO 20 KT BECOMING NORTHWEST 10 TO 15 KT
DURING THE MORNING...THEN BECOMING WEST THIS AFTERNOON. PATCHY
FOG THROUGH MID MORNING. ISOLATED SHOWERS THIS MORNING. WAVES 3 TO
5 FT OCCASIONALLY TO 7 FT SUBSIDING TO 1 TO 3 FT THIS AFTERNOON.
.TONIGHT...SOUTHWEST WINDS 10 TO 20 KT INCREASING TO 15 TO 25 KT
OVERNIGHT. WAVES BUILDING TO 2 TO 4 FT OVERNIGHT.
.FRIDAY...WEST WINDS 20 TO 25 KT INCREASING TO 30 KT DURING THE
MORNING. SLIGHT CHANCE OF SHOWERS IN THE AFTERNOON. WAVES BUILDING
TO 5 TO 8 FT OCCASIONALLY TO 10 FT IN THE AFTERNOON.
.FRIDAY NIGHT...NORTHWEST GALES TO 35 KT. CHANCE OF SHOWERS.
WAVES BUILDING TO 7 TO 10 FT OCCASIONALLY TO 13 FT.
.SATURDAY...NORTH GALES TO 35 KT DIMINISHING TO 30 KT IN THE
AFTERNOON. CHANCE OF SHOWERS. WAVES 8 TO 12 FT OCCASIONALLY TO 15
FT SUBSIDING TO 6 TO 9 FT OCCASIONALLY TO 11 FT LATE.
.SATURDAY NIGHT...NORTHWEST WINDS 15 TO 25 KT. WAVES SUBSIDING TO
3 TO 5 FT OCCASIONALLY TO 7 FT OVERNIGHT.
.SUNDAY...NORTHWEST WINDS AROUND 10 KT BECOMING SOUTHWEST 10 TO 15
KT.
WAVES 2 TO 4 FT SUBSIDING TO 1 TO 3 FT IN THE AFTERNOON.
.MONDAY...SOUTHWEST WINDS 10 TO 20 KT BECOMING NORTHWEST. CHANCE
OF SHOWERS. WAVES 2 TO 4 FT.

$$

LMZ761-161515-
MAFOR 1609/
MICHIGAN NORTH 12810 12700 11600 11500 12510. PATCHY FOG EARLY THIS
MORNING. WAVES 1 TO 3 FT.

MICHIGAN SOUTH 11820 11810 11710 12610 13520. PATCHY FOG EARLY
THIS MORNING. WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT SUBSIDING TO 1
TO 3 FT TODAY. WAVES 2 TO 4 FT TONIGHT.

$$

KJB




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