Great Lakes Forecast
Issued by NWS

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FZUS63 KLOT 182046
GLFLM

OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
246 PM CST TUE NOV 18 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...HIGH PRESSURE OF 30.5 INCHES IS CENTERED OVER THE
LOWER MISSISSIPPI VALLEY THIS AFTERNOON WITH RIDGING EXTENDING
NORTH INTO THE UPPER MIDWEST. MEANWHILE...ONE AREA OF LOW PRESSURE
AT 29.4 INCHES IS LOCATED OVER QUEBEC WITH A COLD FRONT
EXTENDING INTO THE EASTERN LAKES REGION...WHILE ANOTHER TROUGH OF
LOW PRESSURE AVERAGING 29.6 INCHES EXTENDS ACROSS MANITOBA INTO
THE NORTHERN PLAINS. THE RIDGE WILL QUICKLY MOVE EAST ACROSS LAKE
MICHIGAN TONIGHT FOLLOWED BY THE TROUGH WHICH WILL DEEPEN SLIGHTLY
TO 29.5 INCHES AND CLOSE OFF AS IT MOVES ACROSS ONTARIO EARLY
THURSDAY. HIGH PRESSURE OF 30.5 INCHES WILL BUILD BACK OVER THE
OHIO VALLEY FRIDAY WITH RIDGING EXTENDING OVER LAKE MICHIGAN. LOW
PRESSURE OF 29.4 INCHES WILL MOVE ACROSS THE NORTHERN PLAINS OVER
THE WEEKEND THEN OVER LAKE MICHIGAN LATE SUNDAY NIGHT.

LMZ261-362-364-366-563-565-567-868-190500-
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 PM CST TUE NOV 18 2014

SHEBOYGAN WI TO PENTWATER MI NORTH

...GALE WATCH IN EFFECT FROM WEDNESDAY AFTERNOON THROUGH THURSDAY
MORNING...

.TONIGHT...WEST WINDS TO 30 KT BECOMING SOUTHWEST 15 TO 25 KT. SNOW
SHOWERS. WAVES 6 TO 9 FT OCCASIONALLY TO 11 FT SUBSIDING TO 4 TO
7 FT OCCASIONALLY TO 9 FT.
.WEDNESDAY...SOUTHWEST WINDS 15 TO 20 KT BECOMING WEST GALES TO 35
KT LATE IN THE AFTERNOON. SNOW SHOWERS. WAVES 4 TO 7 FT
OCCASIONALLY TO 9 FT.
.WEDNESDAY NIGHT...WEST GALES TO 35 KT. SNOW SHOWERS. WAVES
BUILDING TO 8 TO 12 FT OCCASIONALLY TO 15 FT OVERNIGHT.
.THURSDAY...NORTHWEST WINDS TO 30 KT. SNOW SHOWERS. WAVES 8 TO
12 FT OCCASIONALLY TO 15 FT.
.THURSDAY NIGHT...NORTHWEST WINDS 15 TO 25 KT. CHANCE OF SNOW
SHOWERS. WAVES 6 TO 9 FT OCCASIONALLY TO 11 FT.
.FRIDAY...WEST WINDS 10 TO 20 KT BECOMING SOUTHWEST. SLIGHT
CHANCE OF SNOW SHOWERS. WAVES 4 TO 6 FT OCCASIONALLY TO 8 FT
SUBSIDING TO 3 TO 5 FT OCCASIONALLY TO 7 FT IN THE AFTERNOON.
.FRIDAY NIGHT...SOUTH WINDS 10 TO 20 KT INCREASING TO 20 TO 25 KT.
SLIGHT CHANCE OF LIGHT FREEZING RAIN AND LIGHT SLEET. WAVES 2 TO 4
FT BUILDING TO 4 TO 6 FT OCCASIONALLY TO 8 FT OVERNIGHT.
.SATURDAY...SOUTHWEST WINDS 15 TO 25 KT. CHANCE OF RAIN AND LIGHT
FREEZING RAIN OR LIGHT SLEET. WAVES 5 TO 8 FT OCCASIONALLY TO
10 FT.
.SUNDAY...SOUTHEAST WINDS 10 TO 20 KT. RAIN LIKELY. WAVES 3 TO
5 FT OCCASIONALLY TO 7 FT.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-190500-
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 PM CST TUE NOV 18 2014

SHEBOYGAN WI TO PENTWATER MI SOUTH

...GALE WATCH IN EFFECT FROM WEDNESDAY AFTERNOON THROUGH THURSDAY
MORNING...

.TONIGHT...WEST WINDS TO 30 KT BECOMING SOUTHWEST 20 TO 25 KT.
SNOW SHOWERS. WAVES 7 TO 10 FT OCCASIONALLY TO 13 FT.
.WEDNESDAY...SOUTHWEST WINDS TO 30 KT BECOMING WEST GALES TO 35
KT. SNOW SHOWERS LIKELY. WAVES 6 TO 9 FT OCCASIONALLY TO 11 FT.
.WEDNESDAY NIGHT...WEST GALES TO 35 KT. SNOW SHOWERS. WAVES 10 TO
14 FT OCCASIONALLY TO 18 FT.
.THURSDAY...WEST WINDS TO 30 KT. SNOW SHOWERS. WAVES 8 TO 12 FT
OCCASIONALLY TO 15 FT.
.THURSDAY NIGHT...NORTHWEST WINDS 15 TO 25 KT. SNOW SHOWERS
LIKELY. WAVES 7 TO 10 FT OCCASIONALLY TO 13 FT.
.FRIDAY...WEST WINDS 10 TO 15 KT BECOMING SOUTHWEST. WAVES 4 TO
7 FT OCCASIONALLY TO 9 FT SUBSIDING TO 2 TO 4 FT IN THE
AFTERNOON.
.FRIDAY NIGHT...SOUTH WINDS 10 TO 20 KT INCREASING TO 15 TO 25 KT.
CHANCE OF RAIN OR LIGHT FREEZING RAIN OR LIGHT SLEET. WAVES 2 TO 4
FT BUILDING TO 4 TO 6 FT OCCASIONALLY TO 8 FT OVERNIGHT.
.SATURDAY...SOUTH WINDS 15 TO 25 KT. CHANCE OF RAIN AND LIGHT
FREEZING RAIN OR LIGHT SLEET. WAVES 4 TO 7 FT OCCASIONALLY TO
9 FT.
.SUNDAY...SOUTH WINDS 10 TO 20 KT. RAIN. WAVES 4 TO 6 FT
OCCASIONALLY TO 8 FT.

$$

LMZ761-190500-
MAFOR 1822/
MICHIGAN NORTH 12647 11637 12537 12527 11647. WAVES 6 TO 9 FT
OCCASIONALLY TO 11 FT SUBSIDING TO 4 TO 7 FT OCCASIONALLY TO 9 FT
TONIGHT. WAVES 4 TO 7 FT OCCASIONALLY TO 9 FT WEDNESDAY.

MICHIGAN SOUTH 12647 13537 12547 11657. WAVES 7 TO 10 FT
OCCASIONALLY TO 13 FT TONIGHT. WAVES 6 TO 9 FT OCCASIONALLY TO
11 FT WEDNESDAY.

$$

BMD





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