Great Lakes Forecast
Issued by NWS

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000
FZUS63 KLOT 220239
GLFLM

OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
839 PM CST SAT FEB 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 VERY LARGE 31.0 HIGH PRESSURE OVER ALBERTA AND
SASKATCHEWAN WILL MOVE SOUTHEAST INTO THE DAKOTAS SUNDAY AFTERNOON
AND THEN CONTINUE SOUTHEAST AND EXTEND FROM OHIO WEST TO THE
CENTRAL AND SOUTHERN PLAINS BY MONDAY AFTERNOON. MEANWHILE...A
29.3 INCH LOW PRESSURE CENTER WILL MOVE FROM NEAR HUDSON BAY
MONDAY NIGHT TO NEW BRUNSWICK WEDNESDAY EVENING WITH A TRAILING
COLD FRONT MOVING ACROSS LAKE MICHIGAN TUESDAY NIGHT.

LMZ261-362-364-366-563-565-567-868-221030-
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-
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-
839 PM CST SAT FEB 21 2015

SHEBOYGAN WI TO PENTWATER MI NORTH

.REST OF TONIGHT...NORTH WINDS 10 TO 15 KT BACKING NORTHWEST AND
INCREASING TO 15 TO 25 KT. CHANCE OF SNOW SHOWERS. WAVES 1 TO 3 FT
BUILDING TO 4 TO 6 FT OCCASIONALLY TO 8 FT OVERNIGHT.
.SUNDAY...NORTHWEST WINDS 15 TO 25 KT. SNOW SHOWERS. WAVES 4 TO 6
FT OCCASIONALLY TO 8 FT.
.SUNDAY NIGHT...NORTHWEST WINDS 15 TO 25 KT BECOMING WEST 10 TO 20
KT LATE. CHANCE OF SNOW SHOWERS. WAVES 4 TO 6 FT OCCASIONALLY TO
8 FT.
.MONDAY...WEST WINDS 10 TO 20 KT BECOMING SOUTHWEST TO 30 KT IN
THE AFTERNOON. SLIGHT CHANCE OF SNOW SHOWERS. WAVES 4 TO 7 FT
OCCASIONALLY TO 9 FT.
.MONDAY NIGHT...SOUTHWEST GALES TO 40 KT. HEAVY FREEZING SPRAY.
SNOW SHOWERS LIKELY IN THE EVENING...THEN SNOW SHOWERS OVERNIGHT.
WAVES BUILDING TO 10 TO 14 FT OCCASIONALLY TO 18 FT.
.TUESDAY...WEST GALES TO 35 KT BECOMING NORTHWEST TO 30 KT IN THE
AFTERNOON. HEAVY FREEZING SPRAY IN THE MORNING. SNOW SHOWERS IN
THE MORNING...THEN CHANCE OF SNOW SHOWERS IN THE AFTERNOON. WAVES
8 TO 12 FT OCCASIONALLY TO 15 FT.
.TUESDAY NIGHT...NORTHWEST WINDS 15 TO 25 KT. CHANCE OF SNOW
SHOWERS. WAVES SUBSIDING TO 4 TO 7 FT OCCASIONALLY TO 9 FT
OVERNIGHT.
.WEDNESDAY...NORTHWEST WINDS 15 TO 25 KT DIMINISHING TO 10 TO
20 KT IN THE AFTERNOON. CHANCE OF SNOW SHOWERS. WAVES 4 TO 7 FT
OCCASIONALLY TO 9 FT.
.THURSDAY...NORTHWEST WINDS 10 TO 15 KT. SLIGHT CHANCE OF SNOW
SHOWERS. WAVES 2 TO 4 FT.

WAVE FORECAST IS FOR ICE FREE AREAS

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-221030-
LAKE MICHIGAN FROM MICHIGAN CITY IN TO ST. JOSEPH MI 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN FROM 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-
839 PM CST SAT FEB 21 2015

SHEBOYGAN WI TO PENTWATER MI SOUTH

.REST OF TONIGHT...VARIABLE WINDS LESS THAN 10 KT BECOMING NORTH
10 TO 20 KT LATE THIS EVENING...THEN BECOMING NORTHWEST 15 TO 25
KT OVERNIGHT. CHANCE OF SNOW SHOWERS. WAVES 1 TO 2 FT BUILDING TO
4 TO 6 FT OCCASIONALLY TO 8 FT OVERNIGHT.
.SUNDAY...NORTHWEST WINDS 15 TO 25 KT INCREASING TO 30 KT. CHANCE
OF SNOW SHOWERS. WAVES BUILDING TO 6 TO 9 FT OCCASIONALLY TO 11
FT.
.SUNDAY NIGHT...NORTHWEST WINDS 15 TO 25 KT. SNOW SHOWERS LIKELY.
WAVES 6 TO 9 FT OCCASIONALLY TO 11 FT.
.MONDAY...WEST WINDS 15 TO 25 KT. CHANCE OF SNOW SHOWERS. WAVES
4 TO 7 FT OCCASIONALLY TO 9 FT.
.MONDAY NIGHT...SOUTHWEST WINDS TO 30 KT INCREASING TO GALES TO
40 KT OVERNIGHT. HEAVY FREEZING SPRAY. SLIGHT CHANCE OF SNOW
SHOWERS OVERNIGHT. WAVES BUILDING TO 10 TO 14 FT OCCASIONALLY TO
18 FT OVERNIGHT.
.TUESDAY...SOUTHWEST GALES TO 40 KT BECOMING WEST TO 30 KT IN THE
AFTERNOON. HEAVY FREEZING SPRAY IN THE MORNING...THEN FREEZING
SPRAY IN THE AFTERNOON. CHANCE OF SNOW SHOWERS. WAVES 10 TO 14 FT
OCCASIONALLY TO 18 FT.
.TUESDAY NIGHT...NORTHWEST WINDS TO 30 KT DIMINISHING TO 15 TO
25 KT OVERNIGHT. CHANCE OF SNOW SHOWERS. WAVES 8 TO 11 FT
OCCASIONALLY TO 14 FT SUBSIDING TO 5 TO 8 FT OCCASIONALLY TO
10 FT OVERNIGHT.
.WEDNESDAY...NORTH WINDS 15 TO 25 KT DIMINISHING TO 10 TO 20 KT
IN THE AFTERNOON. CHANCE OF SNOW SHOWERS. WAVES 4 TO 7 FT
OCCASIONALLY TO 9 FT.
.THURSDAY...NORTHWEST WINDS 10 TO 15 KT. SLIGHT CHANCE OF SNOW
SHOWERS. WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT.

WAVE FORECAST IS FOR ICE FREE AREAS

$$
LMZ761-221030-
MAFOR 2204/
MICHIGAN NORTH 11810 11720 15737. 1 TO 3 FT BUILDING TO 4 TO 6 FT
OCCASIONALLY TO 8 FT OVERNIGHT AND CONTINUING SUNDAY.

MICHIGAN SOUTH 10900 11810 11820 12737 13747 11737. WAVES 1 TO 2
FT BUILDING TO 4 TO 6 FT OCCASIONALLY TO 8 FT OVERNIGHT...THEN
BUILDING TO 6 TO 9 FT OCCASIONALLY TO 11 FT SUNDAY.

$$

IZZI



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