Great Lakes Forecast
Issued by NWS

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000
FZUS63 KLOT 200850
GLFLM

OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
250 AM CST FRI JAN 20 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 HEIGHT OF THE HIGHEST 1/3 OF THE WAVES...ALONG
WITH THE AVERAGE HEIGHT OF THE HIGHEST 10 PERCENT OF THE WAVES
WHICH WILL OCCASIONALLY BE ENCOUNTERED.

.SYNOPSIS...BROAD LOW PRESSURE AVERAGING 29.6 INCHES OVER EASTERN
ILLINOIS WILL DISSIPATE BY THIS EVENING AS IT REACHES LAKE HURON.
ANOTHER LOW WILL DEVELOP ACROSS THE SOUTHERN PLAINS THIS AFTERNOON
AND EVENING AND REACH MINNESOTA AT 29.5 INCHES SATURDAY NIGHT.
ANOTHER STRONGER LOW OF 29.3 INCHES WILL DEVELOP OVER THE SOUTHERN
PLAINS SATURDAY NIGHT AND DEEPEN TO 29.2 INCHES AS IT REACHES THE
MID ATLANTIC COAST MONDAY.

LMZ261-362-364-366-563-565-567-868-201630-
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-
250 AM CST FRI JAN 20 2017

SHEBOYGAN WI TO PENTWATER MI NORTH...

.TODAY...EAST WINDS 10 TO 15 KT. AREAS OF FOG. RAIN LIKELY. WAVES
1 TO 3 FT.
.TONIGHT...SOUTHEAST WINDS 10 TO 15 KT. AREAS OF FOG. CHANCE OF
RAIN. WAVES 1 TO 3 FT.
.SATURDAY...EAST WINDS 10 TO 20 KT. CHANCE OF RAIN IN THE
MORNING. AREAS OF FOG. WAVES 1 TO 3 FT.
.SATURDAY NIGHT...EAST WINDS 10 TO 20 KT. AREAS OF FOG IN THE
EVENING...THEN PATCHY FOG OVERNIGHT. CHANCE OF RAIN. WAVES 1 TO
3 FT.
.SUNDAY...EAST WINDS 10 TO 20 KT BECOMING NORTHEAST. PATCHY FOG
IN THE MORNING. CHANCE OF RAIN. WAVES 1 TO 3 FT.
.SUNDAY NIGHT...NORTHEAST WINDS 15 TO 25 KT DIMINISHING TO 10 TO
20 KT. CHANCE OF RAIN AND SNOW. WAVES 2 TO 4 FT.
.MONDAY...NORTHEAST WINDS 10 TO 20 KT DIMINISHING TO 10 TO 15 KT.
CHANCE OF RAIN AND SNOW. WAVES 1 TO 3 FT.
.TUESDAY...SOUTHEAST WINDS AROUND 10 KT. WAVES 1 TO 2 FT.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-201630-
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-
250 AM CST FRI JAN 20 2017

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.TODAY...EAST WINDS 10 TO 20 KT DIMINISHING TO 10 TO 15 KT BY
EARLY AFTERNOON. AREAS OF FOG. RAIN WITH AREAS OF DRIZZLE THIS
MORNING...THEN CHANCE OF RAIN WITH PATCHY DRIZZLE THIS AFTERNOON.
WAVES 2 TO 4 FT SUBSIDING TO 1 TO 3 FT THIS AFTERNOON.
.TONIGHT...SOUTHEAST WINDS 10 TO 15 KT. AREAS OF FOG AND DRIZZLE.
WAVES 1 TO 3 FT.
.SATURDAY...SOUTHEAST WINDS 10 TO 20 KT. AREAS OF DRIZZLE IN THE
MORNING. AREAS OF FOG. WAVES 1 TO 3 FT.
.SATURDAY NIGHT...SOUTHEAST WINDS 10 TO 15 KT. AREAS OF FOG.
CHANCE OF RAIN. WAVES 1 TO 3 FT.
.SUNDAY...EAST WINDS 5 TO 10 KT BECOMING NORTH 10 TO 20 KT IN THE
AFTERNOON. PATCHY FOG IN THE MORNING. WAVES 1 TO 3 FT BUILDING TO
2 TO 4 FT.
.SUNDAY NIGHT...NORTH WINDS 15 TO 20 KT. CHANCE OF RAIN AND SNOW.
WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT.
.MONDAY...NORTH WINDS 10 TO 20 KT DIMINISHING TO 10 TO 15 KT.
WAVES SUBSIDING TO 2 TO 4 FT.
.TUESDAY...WEST WINDS 5 TO 10 KT BACKING TO SOUTH. WAVES 1 TO
2 FT.

$$

LMZ761-201630-
MAFOR 2010/
MICHIGAN NORTH 14216 11216 13313. AREAS OF FOG. CHANCE OF RAIN
TONIGHT. WAVES 1 TO 3 FT.

MICHIGAN SOUTH 13226 12213 13313. AREAS OF FOG. CHANCE OF RAIN
THIS AFTERNOON. WAVES 2 TO 4 FT SUBSIDING TO 1 TO 3 FT THIS
AFTERNOON AND PERSISTING TONIGHT.

$$

MTF

EXPERIMENTAL MODERNIZED OPEN LAKE FORECAST IS AVAILABLE ONLINE AT
WEATHER.GOV/LOT/GLFTABLE (ALL LOWER CASE)

GRAPHICAL MARINE FORECASTS ARE AVAILABLE ONLINE AT
WEATHER.GOV/GREATLAKES (ALL LOWER CASE)


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