Great Lakes Forecast
Issued by NWS

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000
FZUS63 KLOT 220247
GLFLM

OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
847 PM CST WED JAN 21 2015

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...A SURFACE RIDGE OF HIGH PRESSURE OF 30.5 INCHES
OVER THE NORTHERN PLAINS...WILL BUILD OVER THE CENTRAL MISSISSIPPI
VALLEY AND LOWER GREAT LAKES REGION THURSDAY AFTERNOON AND
EVENING. MEANWHILE...AN AREA OF LOW PRESSURE OF 29.4 INCHES WILL
MOVE EASTWARD FROM NORTHERN MANITOBA TO EASTERN ONTARIO BY FRIDAY
EVENING. THIS SYSTEM WILL DRAG A COLD FRONT ACROSS THE LAKE BY
SATURDAY MORNING. ANOTHER QUICK MOVING LOW PRESSURE AROUND 29.5
INCHES WILL THEN APPROACH SOUTHERN LAKE MICHIGAN FROM THE
NORTHWEST BY SUNDAY.

LMZ261-362-364-366-563-565-221030-
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-
847 PM CST WED JAN 21 2015

TWO RIVERS WI TO MANISTEE MI NORTH

...GALE WATCH IN EFFECT FROM LATE THURSDAY NIGHT THROUGH FRIDAY
AFTERNOON...

.REST OF TONIGHT...NORTHWEST WINDS 10 TO 15 KT. WAVES 1 TO 3 FT.
.THURSDAY...WEST WINDS 10 TO 15 KT BECOMING SOUTHWEST 15 TO 20 KT
LATE. WAVES 1 TO 3 FT BUILDING TO 2 TO 4 FT BY EARLY EVENING.
.THURSDAY NIGHT...SOUTHWEST WINDS 15 TO 25 KT INCREASING TO GALES
TO 35 KT AFTER MIDNIGHT. WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT BUILDING
TO 7 TO 10 FT OCCASIONALLY TO 13 FT OVERNIGHT.
.FRIDAY...SOUTHWEST GALES TO 35 KT EASING TO 30 KT IN THE AFTERNOON.
CHANCE OF SNOW. WAVES 8 TO 11 FT OCCASIONALLY TO 14 FT.
.FRIDAY NIGHT...SOUTHWEST WINDS AROUND 25 KT BECOMING WEST 10 TO
20 KT OVERNIGHT. CHANCE OF SNOW SHOWERS. WAVES SUBSIDING TO 4 TO
7 FT OCCASIONALLY TO 9 FT OVERNIGHT.
.SATURDAY...NORTHWEST WINDS 10 TO 20 KT. CHANCE OF SNOW SHOWERS.
WAVES SUBSIDING TO 1 TO 3 FT IN THE AFTERNOON.
.SATURDAY NIGHT...NORTH WINDS 10 TO 15 KT BECOMING NORTHEAST.
SLIGHT CHANCE OF SNOW. WAVES 1 TO 3 FT.
.SUNDAY...EAST WINDS 10 TO 20 KT BECOMING NORTHEAST AND INCREASING
TO 15 TO 20 KT IN THE AFTERNOON. CHANCE OF SNOW. WAVES 2 TO 4 FT.
.MONDAY...NORTHEAST WINDS 10 TO 20 KT. CHANCE OF SNOW SHOWERS.
WAVES 2 TO 4 FT.

$$

LMZ080-567-669-671-673-675-777-779-868-870-872-874-876-878-221030-
LAKE MICHIGAN FROM MICHIGAN CITY IN TO ST. JOSEPH MI 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN FROM TWO RIVERS TO SHEBOYGAN WI 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 PENTWATER TO MANISTEE MI 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-
847 PM CST WED JAN 21 2015

TWO RIVERS WI TO MANISTEE MI SOUTH

.REST OF TONIGHT...NORTHWEST WINDS 10 TO 15 KT. SLIGHT CHANCE OF
SNOW OVERNIGHT. WAVES 2 TO 4 FT.
.THURSDAY...NORTHWEST WINDS 10 TO 15 KT BECOMING WEST EARLY IN
THE AFTERNOON...THEN INCREASING TO 10 TO 20 KT LATE. SLIGHT CHANCE
OF SNOW SHOWERS. WAVES 2 TO 4 FT.
.THURSDAY NIGHT...SOUTHWEST WINDS 10 TO 20 KT INCREASING TO
30 KT OVERNIGHT. WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT BUILDING TO
4 TO 6 FT OCCASIONALLY TO 8 FT OVERNIGHT.
.FRIDAY...SOUTHWEST WINDS TO 30 KT. WAVES 4 TO 7 FT OCCASIONALLY
TO 9 FT.
.FRIDAY NIGHT...SOUTHWEST WINDS 20 TO 25 KT BECOMING WEST 15 TO
25 KT. SLIGHT CHANCE OF SNOW SHOWERS. WAVES 4 TO 7 FT OCCASIONALLY
TO 9 FT.
.SATURDAY...NORTHWEST WINDS 15 TO 25 KT DIMINISHING TO 10 TO
20 KT IN THE AFTERNOON. SLIGHT CHANCE OF SNOW SHOWERS. WAVES
SUBSIDING TO 2 TO 4 FT IN THE AFTERNOON.
.SATURDAY NIGHT...WEST WINDS 10 TO 20 KT BECOMING SOUTH OVERNIGHT.
CHANCE OF SNOW. WAVES 2 TO 4 FT.
.SUNDAY...SOUTHEAST WINDS 10 TO 20 KT BECOMING EAST 15 TO 25 KT
BY LATE MORNING...THEN SHIFTING NORTHEAST BY LATE AFTERNOON.
CHANCE OF SNOW. WAVES 2 TO 4 FT BUILDING TO 3 TO 6 FT OCCASIONALLY
TO 8 FT BY SUNDAY EVENING.
.MONDAY...NORTH WINDS 15 TO 25 KT EASING TO 10 TO 20 KT. CHANCE OF
SNOW SHOWERS. WAVES 3 TO 6 FT OCCASIONALLY TO 8 FT.

$$
LMZ761-221030-
MAFOR 2204/
MICHIGAN NORTH 12710 12610 12520 12530. WAVES 1 TO 3 FT OVERNIGHT.
WAVES 1 TO 3 FT BUILDING TO 2 TO 4 FT THURSDAY. WAVES 3 TO 5 FT
OCCASIONALLY TO 7 FT THURSDAY EVENING.

MICHIGAN SOUTH 14710 12610 12520. CHANCE OF SNOW OVERNIGHT. WAVES
2 TO 4 FT OVERNIGHT THROUGH THURSDAY. WAVES 3 TO 5 FT OCCASIONALLY
TO 7 FT THURSDAY EVENING.

$$

BEACHLER



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