Great Lakes Forecast
Issued by NWS

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000
FZUS63 KLOT 220753
GLFLM

OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
253 AM 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...LOW PRESSURE OF 29.7 INCHES OVER ONTARIO WILL MOVE TO
WESTERN QUEBEC BY THIS EVENING. A COLD FRONT TRAILING FROM THIS
LOW WILL CROSS NORTHERN LAKE MICHIGAN THIS EVENING. ANOTHER WEAK
LOW AROUND 29.8 INCHES WILL FORM OVER THE UPPER MISSISSIPPI VALLEY
THIS EVENING AND MEANDER ACROSS THE WESTERN AND CENTRAL GREAT
LAKES THROUGH MID WEEK WHILE SLOWLY DEEPENING. WEAK HIGH PRESSURE
RIDGING AROUND 29.9 INCHES WILL BE OVER THE GREAT LAKES ON FRIDAY.

LMZ261-362-364-366-563-565-221530-
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 CDT MON MAY 22 2017

TWO RIVERS WI TO MANISTEE MI NORTH...

.TODAY...SOUTHWEST WINDS 15 TO 25 KT. CHANCE OF RAIN SHOWERS THIS
MORNING. WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT.
.TONIGHT...SOUTHWEST WINDS 10 TO 20 KT BECOMING SOUTH 5 TO 10 KT.
WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT SUBSIDING TO 1 TO 3 FT.
.TUESDAY...EAST WINDS 5 TO 10 KT BECOMING NORTHEAST. SCATTERED
RAIN SHOWERS IN THE AFTERNOON. WAVES 1 TO 3 FT.
.TUESDAY NIGHT...NORTHEAST WINDS 10 TO 20 KT. SCATTERED RAIN
SHOWERS. WAVES 1 TO 3 FT.
.WEDNESDAY...NORTHEAST WINDS 10 TO 20 KT INCREASING TO 15 TO
25 KT. SCATTERED RAIN SHOWERS IN THE MORNING...THEN CHANCE OF
RAIN IN THE AFTERNOON. WAVES 2 TO 4 FT.
.WEDNESDAY NIGHT...NORTHEAST WINDS 15 TO 25 KT DIMINISHING TO
10 TO 20 KT. WAVES 2 TO 4 FT.
.THURSDAY...NORTH WINDS 10 TO 20 KT. WAVES 1 TO 3 FT.
.FRIDAY...WEST WINDS 5 TO 10 KT BECOMING SOUTHWEST. WAVES 1 FT OR
LESS.

$$

LMZ080-567-669-671-673-675-777-779-868-870-872-874-876-878-221530-
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 CDT MON MAY 22 2017

TWO RIVERS WI TO MANISTEE MI SOUTH...

.TODAY...SOUTHWEST WINDS 15 TO 25 KT BECOMING SOUTH. SLIGHT
CHANCE OF SHOWERS THIS AFTERNOON. WAVES 4 TO 6 FT OCCASIONALLY TO
8 FT SUBSIDING TO 3 TO 5 FT OCCASIONALLY TO 7 FT.
.TONIGHT...SOUTHWEST WINDS 15 TO 25 KT DIMINISHING TO 10 TO
15 KT. SCATTERED SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS IN
THE EVENING...THEN SCATTERED SHOWERS OVERNIGHT. WAVES 3 TO 5 FT
OCCASIONALLY TO 7 FT SUBSIDING TO 1 TO 3 FT.
.TUESDAY...SOUTH WINDS 10 TO 15 KT BACKING TO EAST. SCATTERED
SHOWERS. WAVES 1 TO 3 FT SUBSIDING TO 1 TO 2 FT.
.TUESDAY NIGHT...NORTHEAST WINDS 10 TO 20 KT. SCATTERED RAIN
SHOWERS. WAVES 1 TO 2 FT BUILDING TO 1 TO 3 FT.
.WEDNESDAY...NORTHEAST WINDS 10 TO 20 KT BECOMING NORTH 15 TO
25 KT. SCATTERED RAIN SHOWERS IN THE MORNING...THEN CHANCE OF
RAIN IN THE AFTERNOON. WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT.
.WEDNESDAY NIGHT...NORTHEAST WINDS 15 TO 25 KT BECOMING NORTH.
CHANCE OF RAIN. WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT.
.THURSDAY...NORTH WINDS 15 TO 25 KT DIMINISHING TO 10 TO 20 KT.
WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT.
.FRIDAY...SOUTHEAST WINDS 5 TO 10 KT INCREASING TO 10 TO 15 KT.
WAVES 1 TO 2 FT.

$$

LMZ761-221530-
MAFOR 2209/
MICHIGAN NORTH 14530 11530 12520 11510. CHANCE OF SHOWERS EARLY
THIS MORNING. WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT TODAY. WAVES 3
TO 5 FT OCCASIONALLY TO 7 FT SUBSIDING TO 1 TO 3 FT TONIGHT.

MICHIGAN SOUTH 11630 12530 11430 12530 12520. SCATTERED SHOWERS
TONIGHT. WAVES 4 TO 6 FT OCCASIONALLY TO 8 FT SUBSIDING TO 3 TO 5
FT OCCASIONALLY TO 7 FT TODAY. WAVES 3 TO 5 FT OCCASIONALLY TO 7
FT SUBSIDING TO 1 TO 3 FT TONIGHT.

$$


RODRIGUEZ

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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