Great Lakes Forecast
Issued by NWS

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513
FZUS63 KLOT 142051
GLFLM

OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
251 PM CST TUE FEB 14 2017

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 OF THE HIGHEST 1/3 OF THE WAVE, ALONG WITH THE
AVERAGE HEIGHT OF THE HIGHEST 10% OF THE WAVES WHICH WILL
OCCASIONALLY BE ENCOUNTERED.

.SYNOPSIS...LOW PRESSURE OF 29.4 INCHES OVER ONTARIO THIS
AFTERNOON...WILL MOVE TO THE EASTERN GREAT LAKES LATE TONIGHT
INTO WEDNESDAY. THE LOW WILL MERGE WITH ANOTHER LOW OFF THE NEW
ENGLAND COAST ON WEDNESDAY AND DEEPEN TO 28.7 INCHES THURSDAY AS
IT LIFTS ACROSS THE CANADIAN MARITIME PROVINCES. MEANWHILE...A
RIDGE OF HIGH PRESSURE AVERAGING 30.0 INCHES WILL MOVE FROM
MANITOBA TODAY TO THE WESTERN GREAT LAKES EARLY THURSDAY...THEN TO
THE EASTERN GREAT LAKES FRIDAY. LOW PRESSURE OF 29.3 INCHES WILL
MOVE ACROSS SASKATCHEWAN FRIDAY TO JAMES BAY SATURDAY EVENING.

LMZ261-362-364-366-563-565-567-868-150430-
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 PM CST TUE FEB 14 2017

SHEBOYGAN WI TO PENTWATER MI NORTH...

...GALE WARNING IN EFFECT THROUGH LATE TONIGHT...

.TONIGHT...NORTHWEST GALES TO 40 KT DIMINISHING TO GALES TO 35
KT. CHANCE OF SNOW. WAVES 7 TO 10 FT OCCASIONALLY TO 13 FT.
.WEDNESDAY...NORTHWEST WINDS TO 30 KT. CHANCE OF SNOW. WAVES 6 TO
9 FT OCCASIONALLY TO 11 FT SUBSIDING TO 4 TO 6 FT OCCASIONALLY TO
8 FT.
.WEDNESDAY NIGHT...NORTHWEST WINDS AROUND 25 KT BECOMING NORTH 10
TO 20 KT. WAVES 4 TO 6 FT OCCASIONALLY TO 8 FT SUBSIDING TO 3 TO
5 FT OCCASIONALLY TO 7 FT.
.THURSDAY...NORTH WINDS 10 TO 20 KT DIMINISHING TO 5 TO 10 KT IN
THE AFTERNOON. WAVES 2 TO 4 FT SUBSIDING TO 1 TO 2 FT.
.THURSDAY NIGHT...EAST WINDS 10 TO 15 KT BECOMING SOUTHEAST.
WAVES 1 TO 2 FT.
.FRIDAY...SOUTHEAST WINDS 10 TO 20 KT BECOMING SOUTH. WAVES 1 TO
3 FT.
.FRIDAY NIGHT...SOUTH WINDS 10 TO 20 KT. WAVES 1 TO 3 FT.
.SATURDAY...SOUTHWEST WINDS 10 TO 20 KT. WAVES 1 TO 3 FT.
.SUNDAY...NORTHWEST WINDS 5 TO 10 KT BACKING TO SOUTH. WAVES 1 TO
2 FT.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-150430-
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 PM CST TUE FEB 14 2017

SHEBOYGAN WI TO PENTWATER MI SOUTH...

...GALE WARNING IN EFFECT THROUGH LATE TONIGHT...

.TONIGHT...NORTHWEST GALES TO 35 KT. CHANCE OF FLURRIES AND
SLIGHT CHANCE OF RAIN THIS EVENING,...THEN SLIGHT CHANCE OF SNOW
OVERNIGHT. WAVES 7 TO 10 FT OCCASIONALLY TO 13 FT.
.WEDNESDAY...NORTHWEST WINDS TO 30 KT. CHANCE OF SNOW IN THE
MORNING,...THEN SLIGHT CHANCE OF SNOW IN THE AFTERNOON. WAVES
6 TO 9 FT OCCASIONALLY TO 11 FT SUBSIDING TO 4 TO 7 FT
OCCASIONALLY TO 9 FT.
.WEDNESDAY NIGHT...NORTHWEST WINDS 15 TO 25 KT BECOMING NORTH
10 TO 20 KT. WAVES 4 TO 6 FT OCCASIONALLY TO 8 FT SUBSIDING TO
3 TO 5 FT OCCASIONALLY TO 7 FT.
.THURSDAY...NORTH WINDS 10 TO 20 KT BECOMING NORTHEAST 10 TO
15 KT. WAVES 2 TO 4 FT SUBSIDING TO 1 TO 3 FT.
.THURSDAY NIGHT...EAST WINDS 10 TO 15 KT BECOMING SOUTHEAST 10 TO
20 KT. WAVES 1 TO 3 FT.
.FRIDAY...SOUTHEAST WINDS 10 TO 20 KT. WAVES 1 TO 3 FT.
.FRIDAY NIGHT...SOUTH WINDS 10 TO 20 KT BECOMING SOUTHWEST. WAVES
1 TO 3 FT.
.SATURDAY...SOUTHWEST WINDS 10 TO 20 KT. WAVES 1 TO 2 FT.
.SUNDAY...NORTHWEST WINDS 10 TO 15 KT BACKING TO SOUTH. WAVES
1 TO 2 FT.

$$

LMZ761-150430-
MAFOR 1422/
MICHIGAN NORTH...GALE WARNING IN EFFECT...12757 13750 13740.
CHANCE OF SNOW AND RAIN EARLY THIS EVENING...THEN CHANCE OF SNOW
TONIGHT. CHANCE OF SNOW WEDNESDAY. WAVES 7 TO 10 FT OCCASIONALLY
TO 13 FT TONIGHT. WAVES 6 TO 9 FT OCCASIONALLY TO 11 FT SUBSIDING
TO 4 TO 7 FT OCCASIONALLY TO 9 FT WEDNESDAY.

MICHIGAN SOUTH...GALE WARNING IN EFFECT...10640 11650 14750
13740. CHANCE OF SNOW WEDNESDAY MORNING. WAVES 7 TO 10 FT
OCCASIONALLY TO 13 FT TONIGHT. WAVES 6 TO 9 FT OCCASIONALLY TO 11
FT SUBSIDING TO 4 TO 7 FT OCCASIONALLY TO 9 FT WEDNESDAY.

$$


KJB

EXPERIMENTAL MODERNIZED OPEN LAKE FORECAST IS AVAILABLE ONLINE AT
WEATHER.GOV/LOT/GLFTABLE

GRAPHICAL MARINE FORECASTS ARE AVAILABLE ONLINE AT:
WEATHER.GOV/GREATLAKES



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