Great Lakes Forecast
Issued by NWS

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273
FZUS63 KLOT 280017
GLFLM

OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
717 PM CDT MON MAR 27 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 29.8 INCHES OVER SOUTHEAST ILLINOIS
WILL CONTINUE TO TRACK EAST UP THE OHIO VALLEY TONIGHT AND SLOWLY
WEAKEN AS IT DOES SO. HIGH PRESSURE AVERAGING 30.3 INCHES
CENTERED OVER ONTARIO WILL THEN BUILD INTO THE GREAT LAKES REGION
TUESDAY AND WEDNESDAY. LOW PRESSURE OF 29.6 INCHES WILL DEVELOP
OVER THE SOUTHERN PLAINS WEDNESDAY...AND THEN SLOWLY LIFT
NORTHEAST TOWARDS THE SOUTHERN GREAT LAKES BY THE END OF THE WEEK.

LMZ261-362-364-366-563-565-567-868-280330-
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-
717 PM CDT MON MAR 27 2017

SHEBOYGAN WI TO PENTWATER MI NORTH...

.TONIGHT...NORTH WINDS 10 TO 15 KT INCREASING TO 10 TO 20 KT.
WAVES 2 TO 4 FT.
.TUESDAY...NORTH WINDS 10 TO 20 KT INCREASING TO 15 TO 25 KT.
WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT.
.TUESDAY NIGHT...NORTH WINDS 15 TO 25 KT BECOMING NORTHEAST 10 TO
20 KT. WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT.
.WEDNESDAY...NORTHEAST WINDS 10 TO 20 KT. WAVES 2 TO 4 FT.
.WEDNESDAY NIGHT...EAST WINDS 10 TO 20 KT. WAVES 2 TO 4 FT.
.THURSDAY...EAST WINDS 10 TO 20 KT INCREASING TO 15 TO 25 KT.
CHANCE OF SNOW SHOWERS IN THE MORNING...THEN CHANCE OF RAIN
SHOWERS IN THE AFTERNOON. WAVES 1 TO 3 FT.
.THURSDAY NIGHT...EAST WINDS 15 TO 25 KT BECOMING NORTHEAST.
CHANCE OF RAIN AND SNOW SHOWERS. WAVES 3 TO 5 FT OCCASIONALLY TO
7 FT.
.FRIDAY...NORTHEAST WINDS 20 TO 25 KT. WAVES 3 TO 5 FT
OCCASIONALLY TO 7 FT.
.SATURDAY...NORTH WINDS 10 TO 20 KT BECOMING WEST 10 TO 15 KT.
WAVES 1 TO 3 FT.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-280330-
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-
717 PM CDT MON MAR 27 2017

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.TONIGHT...NORTH WINDS 10 TO 20 KT. SLIGHT CHANCE OF RAIN SHOWERS
THIS EVENING. WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT.
.TUESDAY...NORTH WINDS 15 TO 25 KT. WAVES 3 TO 5 FT OCCASIONALLY
TO 7 FT.
.TUESDAY NIGHT...NORTH WINDS 15 TO 25 KT BECOMING NORTHEAST 10 TO
20 KT. WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT SUBSIDING TO 2 TO
4 FT.
.WEDNESDAY...NORTHEAST WINDS 10 TO 20 KT. WAVES 2 TO 4 FT.
.WEDNESDAY NIGHT...EAST WINDS 15 TO 25 KT INCREASING TO 30 KT.
CHANCE OF RAIN AND SNOW SHOWERS OVERNIGHT. WAVES 3 TO 5 FT
OCCASIONALLY TO 7 FT.
.THURSDAY...EAST WINDS TO 30 KT. RAIN SHOWERS WITH SNOW SHOWERS
LIKELY IN THE MORNING...THEN RAIN SHOWERS IN THE AFTERNOON. WAVES
4 TO 6 FT OCCASIONALLY TO 8 FT.
.THURSDAY NIGHT...NORTHEAST WINDS TO 30 KT. RAIN SHOWERS LIKELY.
WAVES 4 TO 6 FT OCCASIONALLY TO 8 FT.
.FRIDAY...NORTHEAST WINDS TO 30 KT BECOMING NORTH. CHANCE OF RAIN
SHOWERS. WAVES 4 TO 6 FT OCCASIONALLY TO 8 FT.
.SATURDAY...NORTH WINDS 10 TO 20 KT DIMINISHING TO 10 TO 15 KT.
WAVES 2 TO 4 FT.

$$
LMZ761-280330-
MAFOR 2721/
MICHIGAN NORTH 11810 14820 11820 12830. WAVES 2 TO 4 FT TONIGHT.
WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT TUESDAY.

MICHIGAN SOUTH 14820 14830. WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT.


$$


JEE

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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