Great Lakes Forecast
Issued by NWS

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FZUS63 KLOT 230851
GLFLM

OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
251 AM CST SUN NOV 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 29.3 INCHES OVER SOUTHWEST SASKATCHEWAN
WILL MOVE EAST ALONG THE CANADIAN BORDER TOWARD LAKE SUPERIOR BY
THIS EVENING...AS IT SLOWLY WEAKENS. ANOTHER LOW OVER THE SOUTHERN
PLAINS WILL ALSO LIFT NORTHEAST TOWARD ILLINOIS BY THIS EVENING. THE
TWO LOWS WILL MERGE OVER LAKE MICHIGAN TONIGHT AND BEGIN TO RAPIDLY
INTENSIFY...DEEPENING TO 28.8 INCHES AS IT NEARS THE MACKINAC
STRAITS BY EARLY MONDAY MORNING. THE LOW WILL TRACK NORTHEAST INTO
QUEBEC MONDAY NIGHT DEEPENING A BIT FARTHER TO 28.7 INCHES. WEAK
HIGH PRESSURE TRANSITS THE LAKE TUESDAY...FOLLOWED QUICKLY BY A 29.6
INCH LOW THAT WILL PASS OVER THE LAKE LATER WEDNESDAY. STRONG HIGH
PRESSURE AROUND 30.5 INCHES MOVES INTO THE NORTHERN PLAINS BEHIND
THIS LOW.

LMZ261-362-364-366-563-565-567-868-231645-
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-
251 AM CST SUN NOV 23 2014

SHEBOYGAN WI TO PENTWATER MI NORTH

...GALE WATCH IN EFFECT FROM MONDAY AFTERNOON THROUGH LATE MONDAY
NIGHT...

.TODAY...SOUTH WINDS 15 TO 25 KT. SLIGHT CHANCE OF SHOWERS THIS
MORNING...THEN RAIN LIKELY THIS AFTERNOON. WAVES 4 TO 7 FT
OCCASIONALLY TO 9 FT.
.TONIGHT...SOUTHEAST WINDS 15 TO 25 KT DIMINISHING TO 10 TO 20 KT
THROUGH THE EVENING. RAIN IN THE EVENING... THEN SHOWERS OVERNIGHT. WAVES
4 TO 6 FT OCCASIONALLY TO 8 FT SUBSIDING TO 3 TO 5 FT OCCASIONALLY
TO 7 FT OVERNIGHT.
.MONDAY...WEST WINDS TO 30 KT BECOMING NORTHWEST GALES TO 35 KT
IN THE AFTERNOON. SHOWERS IN THE MORNING...THEN SNOW OR RAIN IN
THE AFTERNOON. WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT BUILDING TO
7 TO 10 FT OCCASIONALLY TO 13 FT IN THE AFTERNOON.
.MONDAY NIGHT...NORTHWEST GALES TO 40 KT DIMINISHING TO 30 KT
OVERNIGHT. SNOW SHOWERS LIKELY. WAVES 8 TO 12 FT OCCASIONALLY TO
15 FT SUBSIDING TO 7 TO 10 FT OCCASIONALLY TO 13 FT OVERNIGHT.
.TUESDAY...NORTHWEST WINDS TO 30 KT DIMINISHING TO 15 TO 25 KT.
SNOW SHOWERS. WAVES 5 TO 8 FT OCCASIONALLY TO 10 FT SUBSIDING TO 4
TO 7 FT OCCASIONALLY TO 9 FT IN THE AFTERNOON.
.TUESDAY NIGHT...WEST WINDS 10 TO 20 KT BECOMING SOUTHWEST.
CHANCE OF SNOW SHOWERS. WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT.
.WEDNESDAY...SOUTHWEST WINDS 15 TO 25 KT SHIFTING TO NORTHWEST TO
30 KT WEDNESDAY NIGHT. SLIGHT CHANCE OF SNOW. WAVES 3 TO 5 FT
OCCASIONALLY TO 7 FT.
.THURSDAY...NORTHWEST WINDS 15 TO 25 KT. CHANCE OF SNOW SHOWERS.
WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT BUILDING TO 4 TO 7 FT
OCCASIONALLY TO 9 FT IN THE AFTERNOON.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-231645-
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 SUN NOV 23 2014

SHEBOYGAN WI TO PENTWATER MI SOUTH

...GALE WATCH IN EFFECT FROM MONDAY MORNING THROUGH LATE MONDAY
NIGHT...

.TODAY...SOUTH WINDS 20 TO 25 KT BECOMING SOUTHEAST THIS AFTERNOON.
CHANCE OF SHOWERS THIS MORNING...THEN RAIN LIKELY THIS AFTERNOON.
WAVES 4 TO 6 FT OCCASIONALLY TO 8 FT.
.TONIGHT...SOUTHEAST WINDS 15 TO 25 KT BECOMING SOUTH OVERNIGHT. RAIN IN THE
EVENING...THEN SHOWERS OVERNIGHT. WAVES 4 TO 6 FT OCCASIONALLY TO
8 FT SUBSIDING TO 3 TO 5 FT OCCASIONALLY TO 7 FT OVERNIGHT.
.MONDAY...SOUTHWEST WINDS TO 30 KT QUICKLY BECOMING WEST GALES TO
40 KT. SHOWERS IN THE MORNING...THEN SNOW OR RAIN IN THE
AFTERNOON. WAVES 5 TO 8 FT OCCASIONALLY TO 10 FT BUILDING TO 9 TO
12 FT OCCASIONALLY TO 15 FT IN THE AFTERNOON.
.MONDAY NIGHT...WEST GALES TO 40 KT DIMINISHING TO 30 KT
OVERNIGHT. SNOW SHOWERS. WAVES 10 TO 14 FT OCCASIONALLY TO 18 FT
SUBSIDING TO 8 TO 12 FT OCCASIONALLY TO 15 FT OVERNIGHT.
.TUESDAY...WEST WINDS 15 TO 25 KT. SNOW SHOWERS. WAVES 5 TO 8 FT
OCCASIONALLY TO 10 FT.
.TUESDAY NIGHT...SOUTHWEST WINDS 15 TO 25 KT. CHANCE OF SNOW
SHOWERS. WAVES 4 TO 6 FT OCCASIONALLY TO 8 FT SUBSIDING TO 3 TO
5 FT OCCASIONALLY TO 7 FT OVERNIGHT.
.WEDNESDAY...SOUTH WINDS 15 TO 25 KT BECOMING NORTHWEST TO 30 KT
WEDNESDAY NIGHT. CHANCE OF SNOW. WAVES 3 TO 5 FT OCCASIONALLY TO 7
FT.
.THURSDAY...NORTHWEST WINDS TO 30 KT. CHANCE OF SNOW SHOWERS.
WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT BUILDING TO 4 TO 7 FT
OCCASIONALLY TO 9 FT IN THE AFTERNOON.

$$

LMZ761-231645-
MAFOR 2310/
MICHIGAN NORTH 10310 11423 12430 12436 13326. PERIODS OF RAIN AFTER
AREAS OF EARLY MORNING FOG. WAVES 4 TO 6 FT OCCASIONALLY TO 8 FT
BUILDING TO 4 TO 7 FT OCCASIONALLY TO 9 FT TODAY. WAVES 4 TO 7 FT
OCCASIONALLY TO 9 FT SUBSIDING TO 4 TO 6 FT OCCASIONALLY TO 8 FT
TONIGHT.

MICHIGAN SOUTH 11433 12430 11436 13336 11436. PERIODS OF RAIN
AFTER AREAS OF MORNING FOG. WAVES 4 TO 7 FT OCCASIONALLY TO 9 FT
TODAY. WAVES 4 TO 7 FT OCCASIONALLY TO 9 FT SUBSIDING TO 4 TO 6 FT
OCCASIONALLY TO 8 FT TONIGHT.

$$

KMD




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