Great Lakes Forecast
Issued by NWS

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000
FZUS63 KLOT 040833
GLFLM

OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
233 AM CST WED MAR 4 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...LOW PRESSURE OF 29.5 INCHES OVER NORTHERN LAKE
LAKE HURON...WILL MERGE WITH A DEEPER LOW OF 29.2 INCHES OVER
NORTHERN ONTARIO AND THEN CROSS JAMES BAY TONIGHT. HIGH PRESSURE
OF 30.6 INCHES WILL BUILD SOUTHEAST FROM ALBERTA INTO THE NORTHERN
PLAINS THROUGH WEDNESDAY AND WILL STRENGTHEN TO 30.7 INCHES AS IT
CONTINUES SOUTHEAST ACROSS THE CENTRAL PLAINS AND INTO THE LOWER
OHIO VALLEY BY LATE THURSDAY. THE HIGH WILL THEN MOVE OFF TO THE
EAST FRIDAY AS ANOTHER LOW OF 29.4 INCHES MOVES ACROSS SOUTHERN
HUDSON BAY. THIS LOW WILL TRAIL A COLD FRONT ACROSS THE UPPER
MIDWEST AND GREAT LAKES REGION THIS WEEKEND.

LMZ261-362-364-366-563-565-567-868-041700-
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-
233 AM CST WED MAR 4 2015

SHEBOYGAN WI TO PENTWATER MI NORTH

.TODAY...NORTHWEST WINDS 15 TO 25 KT INCREASING TO 30 KT FROM
LATE MORNING ON. FREEZING SPRAY. CHANCE OF SNOW SHOWERS...MAINLY THIS
AFTERNOON. WAVES 4 TO 7 FT OCCASIONALLY TO 9 FT BUILDING TO 5 TO 8
FT OCCASIONALLY TO 10 FT THIS AFTERNOON.
.TONIGHT...NORTHWEST WINDS TO 30 KT DIMINISHING TO 10 TO 15 KT
LATE. CHANCE OF SNOW SHOWERS IN THE EVENING...THEN SLIGHT CHANCE
OF SNOW SHOWERS OVERNIGHT. WAVES 5 TO 8 FT OCCASIONALLY TO 10 FT
SUBSIDING TO 3 TO 5 FT OCCASIONALLY TO 7 FT.
.THURSDAY...NORTHWEST WINDS 10 TO 15 KT BECOMING WEST IN THE
AFTERNOON. WAVES 2 TO 4 FT.
.THURSDAY NIGHT...SOUTHWEST WINDS 10 TO 20 KT INCREASING TO 15 TO
25 KT OVERNIGHT. WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT BUILDING TO
4 TO 7 FT OCCASIONALLY TO 9 FT OVERNIGHT.
.FRIDAY...SOUTHWEST WINDS TO 30 KT. CHANCE OF SNOW SHOWERS. WAVES
BUILDING TO 8 TO 12 FT OCCASIONALLY TO 15 FT IN THE AFTERNOON.
.FRIDAY NIGHT...WEST WINDS 15 TO 25 KT DIMINISHING TO 10 TO 15 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.
.SATURDAY...WEST WINDS 10 TO 15 KT. CHANCE OF SNOW SHOWERS. WAVES
SUBSIDING TO 1 TO 3 FT.
.SUNDAY...SOUTHWEST WINDS 10 TO 15 KT INCREASING TO 10 TO 20 KT
IN THE AFTERNOON. CHANCE OF SNOW. WAVES 2 TO 4 FT.

WAVE FORECAST IS FOR ICE FREE AREAS

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-041700-
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-
233 AM CST WED MAR 4 2015

SHEBOYGAN WI TO PENTWATER MI SOUTH

.TODAY...NORTHWEST WINDS 15 TO 25 KT INCREASING TO 30 KT. FREEZING
SPRAY. CHANCE OF SNOW SHOWERS. WAVES 4 TO 7 FT OCCASIONALLY TO 9
FT BUILDING TO 6 TO 9 FT OCCASIONALLY TO 11 FT THIS AFTERNOON.
.TONIGHT...NORTHWEST WINDS 15 TO 25 KT DIMINISHING TO 10 TO 20 KT
LATE. CHANCE OF SNOW SHOWERS. WAVES SUBSIDING TO 4 TO 7 FT
OCCASIONALLY TO 9 FT OVERNIGHT.
.THURSDAY...NORTHWEST WINDS 10 TO 20 KT INCREASING TO 15 TO 25 KT
EARLY IN THE AFTERNOON...THEN BECOMING WEST 10 TO 20 KT LATE.
CHANCE OF SNOW SHOWERS. WAVES 4 TO 7 FT OCCASIONALLY TO 9 FT.
.THURSDAY NIGHT...SOUTHWEST WINDS 10 TO 20 KT. WAVES 4 TO 6 FT
OCCASIONALLY TO 8 FT.
.FRIDAY...SOUTHWEST WINDS TO 30 KT. SLIGHT CHANCE OF SNOW
SHOWERS. WAVES BUILDING TO 8 TO 11 FT OCCASIONALLY TO 14 FT IN
THE AFTERNOON.
.FRIDAY NIGHT...WEST WINDS 15 TO 25 KT DIMINISHING TO 10 TO 20 KT
OVERNIGHT. SLIGHT CHANCE OF SNOW SHOWERS. WAVES 8 TO 11 FT
OCCASIONALLY TO 14 FT SUBSIDING TO 4 TO 6 FT OCCASIONALLY TO
8 FT OVERNIGHT.
.SATURDAY...WEST WINDS 10 TO 20 KT. SLIGHT CHANCE OF SNOW
SHOWERS. WAVES 2 TO 4 FT.
.SUNDAY...WEST WINDS 10 TO 15 KT BECOMING SOUTHWEST 10 TO 20 KT
IN THE AFTERNOON. SLIGHT CHANCE OF SNOW. WAVES 2 TO 4 FT.

WAVE FORECAST IS FOR ICE FREE AREAS

$$

LMZ761-041700-
MAFOR 0410/
MICHIGAN NORTH 12730 13741 11730 12720. CHANCE OF SNOW SHOWERS
THIS AFTERNOON AND EVENING. WAVES 4 TO 7 FT OCCASIONALLY TO 9 FT
BUILDING TO 5 TO 8 FT OCCASIONALLY TO 10 FT TODAY. WAVES SUBSIDING
TO 3 TO 5 FT OCCASIONALLY TO 7 FT TONIGHT.

MICHIGAN SOUTH 12730 14741 12730. CHANCE OF SNOW SHOWERS. WAVES 4
TO 7 FT OCCASIONALLY TO 9 FT BUILDING TO 6 TO 9 FT OCCASIONALLY
TO 11 FT TODAY. WAVES SUBSIDING TO 4 TO 7 FT OCCASIONALLY TO 9 FT
TONIGHT.

$$

BMD



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