Great Lakes Forecast
Issued by NWS

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000
FZUS63 KLOT 221339
GLFLM

OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
839 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.

LMZ261-362-364-366-563-565-222130-
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-
839 AM CDT MON MAY 22 2017

TWO RIVERS WI TO MANISTEE MI NORTH...

.REST OF TODAY...SOUTHWEST WINDS 15 TO 25 KT. CHANCE OF SHOWERS
THIS MORNING. WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT.
.TONIGHT...SOUTHWEST WINDS 10 TO 20 KT BECOMING VARIABLE 5 TO 10
KT. WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT SUBSIDING TO 1 TO 3 FT.
.TUESDAY...NORTHEAST WINDS 5 TO 10 KT. SCATTERED SHOWERS IN THE
AFTERNOON. WAVES 1 TO 3 FT.
.TUESDAY NIGHT...NORTHEAST WINDS 10 TO 20 KT. SCATTERED SHOWERS.
WAVES 1 TO 3 FT.
.WEDNESDAY...NORTHEAST WINDS 10 TO 20 KT INCREASING TO 15 TO
25 KT. SCATTERED 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.

$$

LMZ080-567-669-671-673-675-777-779-868-870-872-874-876-878-222130-
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-
839 AM CDT MON MAY 22 2017

TWO RIVERS WI TO MANISTEE MI SOUTH...

.REST OF TODAY...SOUTHWEST WINDS 10 TO 20 KT BECOMING SOUTH 15 TO
25 KT. SLIGHT CHANCE OF SHOWERS THIS AFTERNOON. WAVES 3 TO 5 FT
OCCASIONALLY TO 7 FT.
.TONIGHT...SOUTHWEST WINDS 15 TO 20 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 SHOWERS.
WAVES 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.

$$
LMZ761-222130-
MAFOR 2215/
MICHIGAN NORTH 13530 11520 11510 12900 11100. CHANCE OF SHOWERS
THIS MORNING. WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT TODAY. WAVES
SUBSIDING TO 1 TO 3 FT TONIGHT. WAVES 1 TO 3 FT TUESDAY MORNING.

MICHIGAN SOUTH 11520 12430 13520 11510 11410. SCATTERED SHOWERS
TONIGHT AND TUESDAY MORNING. WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT
TODAY. WAVES SUBSIDING TO 1 TO 3 FT TONIGHT. WAVES 1 TO 3 FT
TUESDAY MORNING.

$$


BMD

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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