Great Lakes Forecast
Issued by NWS

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000
FZUS63 KLOT 230203
GLFLM

OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
903 PM CDT MON MAY 22 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...HIGH PRESSURE OF 30.1 INCHES ACROSS THE OHIO VALLEY
WILL SHIFT TO THE NORTHEAST THROUGH TONIGHT WHILE LOW PRESSURE OF
29.7 INCHES OVER WESTERN QUEBEC MOVES SLOWLY EAST. A COLD FRONT
TRAILING FROM THIS LOW WILL CROSS NORTHERN LAKE MICHIGAN THIS
EVENING. ANOTHER WEAK LOW AROUND 29.8 INCHES OVER NORTHEAST IOWA
THIS EVENING WILL MEANDER ACROSS THE WESTERN AND CENTRAL GREAT
LAKES THROUGH MID WEEK WHILE SLOWLY DEEPENING TO AROUND 29.4
INCHES. WEAK HIGH PRESSURE RIDGING AROUND 29.9 INCHES WILL BE OVER
THE GREAT LAKES ON FRIDAY AND SATURDAY.

LMZ261-362-364-366-563-565-230945-
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-
903 PM CDT MON MAY 22 2017

TWO RIVERS WI TO MANISTEE MI NORTH...

.REST OF TONIGHT...SOUTHWEST WINDS 10 TO 20 KT DIMINISHING TO
10 TO 15 KT LATE THIS EVENING...BECOMING VARIABLE 5 TO 10 KT
AFTER MIDNIGHT AND THEN NORTHEAST LATE. ISOLATED RAIN SHOWERS
THIS EVENING. WAVES 2 TO 4 FT.
.TUESDAY...NORTHEAST WINDS 10 TO 15 KT INCREASING TO 10 TO 20 KT.
SLIGHT CHANCE OF SHOWERS IN THE MORNING...THEN CHANCE OF RAIN
SHOWERS IN THE AFTERNOON. WAVES 1 TO 3 FT.
.TUESDAY NIGHT...NORTHEAST WINDS 10 TO 20 KT INCREASING TO 15 TO
25 KT. CHANCE OF SHOWERS. WAVES 1 TO 3 FT BUILDING TO 2 TO 4 FT.
.WEDNESDAY...NORTHEAST WINDS 15 TO 25 KT. CHANCE OF SHOWERS IN
THE MORNING. WAVES 2 TO 4 FT.
.WEDNESDAY NIGHT...NORTHEAST WINDS 15 TO 25 KT. WAVES 2 TO 4 FT.
.THURSDAY...NORTHEAST WINDS 10 TO 20 KT. WAVES 1 TO 3 FT.
.THURSDAY NIGHT...NORTH WINDS 10 TO 15 KT. WAVES 1 TO 2 FT.
.FRIDAY...WEST WINDS 5 TO 10 KT BECOMING SOUTHWEST 10 TO 15 KT.
WAVES 1 FT OR LESS.
.SATURDAY...SOUTHWEST WINDS 10 TO 15 KT. WAVES 2 FT OR LESS.

$$

LMZ080-567-669-671-673-675-777-779-868-870-872-874-876-878-230945-
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-
903 PM CDT MON MAY 22 2017

TWO RIVERS WI TO MANISTEE MI SOUTH...

.REST OF TONIGHT...SOUTH WINDS 10 TO 20 KT BECOMING SOUTHWEST.
SCATTERED RAIN SHOWERS THIS EVENING...THEN ISOLATED RAIN SHOWERS
OVERNIGHT. WAVES 2 TO 4 FT.
.TUESDAY...SOUTH WINDS 10 TO 15 KT BECOMING SOUTHEAST. CHANCE OF
SHOWERS. WAVES 1 TO 3 FT.
.TUESDAY NIGHT...NORTHEAST WINDS 10 TO 15 KT INCREASING TO 15 TO
25 KT AFTER MIDNIGHT. CHANCE OF SHOWERS. WAVES 1 TO 3 FT.
.WEDNESDAY...NORTHEAST WINDS TO 30 KT. CHANCE OF SHOWERS. WAVES 3
TO 5 FT OCCASIONALLY TO 7 FT.
.WEDNESDAY NIGHT...NORTH WINDS 15 TO 25 KT. CHANCE OF SHOWERS.
WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT.
.THURSDAY...NORTH WINDS 15 TO 25 KT. WAVES 3 TO 5 FT OCCASIONALLY
TO 7 FT.
.THURSDAY NIGHT...NORTHWEST WINDS 10 TO 15 KT. WAVES 1 TO 3 FT.
.FRIDAY...WEST WINDS 5 TO 10 KT BACKING TO SOUTH 10 TO 15 KT.
WAVES 1 TO 2 FT.
.SATURDAY...SOUTH WINDS 10 TO 15 KT. WAVES 1 FT OR LESS.

$$
LMZ761-230945-
MAFOR 2303/
MICHIGAN NORTH 10520 11510 19910 11900 11100 12110 13120. CHANCE
OF RAIN SHOWERS TUESDAY AND TUESDAY EVENING. WAVES 2 TO 4 FT
OVERNIGHT. WAVES 1 TO 3 FT TUESDAY AND TUESDAY EVENING.


MICHIGAN SOUTH 10420 13520 12410 12310 11110. SCATTERED SHOWERS
LATE THIS EVENING. CHANCE OF SHOWERS TUESDAY AND TUESDAY EVENING.
WAVES 2 TO 4 FT OVERNIGHT. WAVES 1 TO 3 FT TUESDAY AND TUESDAY
EVENING.

$$

RC

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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