Great Lakes Forecast
Issued by NWS

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558
FZUS63 KLOT 190853
GLFLM

OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
253 AM CST SUN FEB 19 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...A SURFACE RIDGE OF HIGH PRESSURE OF 30.1 INCHES OVER
THE CENTRAL CONUS WILL BUILD EASTWARD OVER THE GREAT LAKES
TODAY...THEN SHIFT OVER THE EAST COAST BY MONDAY EVENING. LOW
PRESSURE OF 29.5 INCHES IS EXPECTED TO MOVE OUT OF THE NORTHERN
ROCKIES INTO THE NORTHERN PLAINS TONIGHT. THE LOW WILL TRACK
NORTHEAST TO LAKE WINNIPEG MONDAY NIGHT WITH A TRAILING COLD FRONT
EXTENDING SOUTH TO THE CENTRAL PLAINS. THE LOW SHOULD CONTINUE TO
SLOWLY LIFT NORTHEAST...DEEPENING TO 29.2 INCHES MONDAY NIGHT
WHILE THE COLD FRONT PUSHES ACROSS THE LAKE. THE LOW WILL CONTINUE
TO SLOWLY TRACK NORTHEAST TO HUDSON BAY TUESDAY NIGHT AS A WEAK
RIDGE OF HIGH PRESSURE OF 30.1 INCHES BUILDS ACROSS THE LOWER
MISSISSIPPI VALLEY AND A WEAK LOW OF 29.5 INCHES TRACKS ACROSS THE
NORTHERN PLAINS.

LMZ261-362-364-366-563-565-191630-
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-
253 AM CST SUN FEB 19 2017

TWO RIVERS WI TO MANISTEE MI NORTH...

.TODAY...NORTHWEST WINDS 10 TO 15 KT BECOMING NORTH. WAVES 1 TO
2 FT.
.TONIGHT...NORTHEAST WINDS 10 TO 15 KT BECOMING SOUTHEAST 10 TO
20 KT. WAVES 1 TO 2 FT.
.MONDAY...SOUTHEAST WINDS 15 TO 25 KT INCREASING TO 30 KT. WAVES
3 TO 6 FT OCCASIONALLY TO 8 FT.
.MONDAY NIGHT...SOUTHEAST WINDS TO 30 KT BECOMING SOUTHWEST.
RAIN. WAVES 5 TO 8 FT OCCASIONALLY TO 10 FT.
.TUESDAY...WEST WINDS 10 TO 20 KT BECOMING SOUTHWEST. CHANCE OF
RAIN IN THE MORNING. WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT
SUBSIDING TO 2 TO 4 FT.
.TUESDAY NIGHT...SOUTHWEST WINDS 10 TO 20 KT. WAVES 1 TO 3 FT.
.WEDNESDAY...SOUTHWEST WINDS 10 TO 20 KT INCREASING TO 15 TO
25 KT. CHANCE OF RAIN. WAVES 1 TO 3 FT.
.THURSDAY...NORTH WINDS 15 TO 25 KT DIMINISHING TO 10 TO 20 KT.
WAVES 2 TO 4 FT.

$$

LMZ080-567-669-671-673-675-777-779-868-870-872-874-876-878-191630-
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-
253 AM CST SUN FEB 19 2017

TWO RIVERS WI TO MANISTEE MI SOUTH...

.TODAY...NORTHWEST WINDS AROUND 10 KT VEERING TO NORTHEAST. WAVES
2 FT OR LESS.
.TONIGHT...EAST WINDS 10 TO 15 KT BECOMING SOUTHEAST 10 TO 20 KT.
WAVES 1 TO 3 FT.
.MONDAY...SOUTHEAST WINDS 15 TO 25 KT INCREASING TO 30 KT. CHANCE
OF RAIN IN THE AFTERNOON. WAVES 3 TO 6 FT OCCASIONALLY TO 8 FT.
.MONDAY NIGHT...SOUTH WINDS TO 30 KT BECOMING SOUTHWEST. RAIN
LIKELY IN THE EVENING...THEN RAIN OVERNIGHT. WAVES 4 TO 7 FT
OCCASIONALLY TO 9 FT.
.TUESDAY...SOUTHWEST WINDS 10 TO 20 KT DIMINISHING TO 10 TO
15 KT. CHANCE OF RAIN IN THE MORNING. WAVES 3 TO 5 FT
OCCASIONALLY TO 7 FT SUBSIDING TO 1 TO 3 FT.
.TUESDAY NIGHT...SOUTHWEST WINDS 10 TO 20 KT DIMINISHING TO 10 TO
15 KT. WAVES 1 TO 2 FT.
.WEDNESDAY...SOUTHWEST WINDS 10 TO 20 KT INCREASING TO 15 TO
25 KT. WAVES 1 TO 3 FT.
.THURSDAY...NORTH WINDS 15 TO 25 KT. WAVES 2 TO 4 FT.

$$

LMZ761-191630-
MAFOR 1910/
MICHIGAN NORTH 13710 11800 11110 12210 11220. WAVES 1 TO 2 FT.

MICHIGAN SOUTH 12700 11800 12100 11210 11310 11320. WAVES 2 FT OR
LESS TODAY. WAVES 1 TO 3 FT TONIGHT.


$$


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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