Great Lakes Forecast
Issued by NWS

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000
FZUS63 KLOT 221409
GLFLM

OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
809 AM CST SUN JAN 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 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 OF 29.7 INCHES OVER THE WESTERN
GREAT LAKES WILL GRADUALLY WEAKEN TODAY. ANOTHER STRONGER LOW OF
29.3 INCHES WILL TRACK EASTWARD ACROSS THE LOWER MISSISSIPPI
VALLEY AND DEEPEN TO 29.1 INCHES AS IT REACHES THE MID ATLANTIC
COAST MONDAY. A WEAK HIGH PRESSURE RIDGE AROUND 29.6 INCHES WILL
MOVE QUICKLY OVER THE LAKE TUESDAY. LOW PRESSURE AROUND 29.3
INCHES IS THEN EXPECTED TO APPROACH SOUTHERN LAKE MICHIGAN LATE
TUESDAY NIGHT.

LMZ261-362-364-366-563-565-567-868-222230-
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-
809 AM CST SUN JAN 22 2017

SHEBOYGAN WI TO PENTWATER MI NORTH...

...DENSE FOG ADVISORY IN EFFECT UNTIL 3 PM CST THIS AFTERNOON...

.REST OF TODAY...SOUTHWEST WINDS 5 TO 10 KT BECOMING WEST LATE IN
THE AFTERNOON. WIDESPREAD DENSE FOG THIS MORNING...THEN AREAS OF
FOG THIS AFTERNOON. WAVES 1 TO 2 FT.
.TONIGHT...NORTH WINDS 5 TO 10 KT. SLIGHT CHANCE OF RAIN. WAVES
AROUND 1 FT.
.MONDAY...NORTH WINDS 10 TO 15 KT INCREASING TO 10 TO 20 KT IN THE
AFTERNOON. CHANCE OF RAIN IN THE MORNING...THEN RAIN LIKELY IN
THE AFTERNOON. WAVES 1 TO 3 FT.
.MONDAY NIGHT...NORTH WINDS 10 TO 20 KT. A WINTRY MIX LIKELY.
WAVES 1 TO 3 FT.
.TUESDAY...NORTHWEST WINDS 10 TO 15 KT DIMINISHING TO 5 TO 10 KT.
CHANCE OF SNOW IN THE MORNING. WAVES 1 TO 3 FT.
.TUESDAY NIGHT...WEST WINDS 5 TO 10 KT VEERING TO NORTHEAST 10 TO
20 KT OVERNIGHT. SNOW LIKELY. WAVES 1 TO 3 FT.
.WEDNESDAY...NORTH WINDS 20 TO 25 KT. SNOW LIKELY. WAVES 3 TO 5
FT OCCASIONALLY TO 7 FT.
.THURSDAY...NORTHWEST WINDS 20 TO 25 KT. CHANCE OF SNOW. WAVES 3
TO 6 FT OCCASIONALLY TO 8 FT.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-222230-
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-
809 AM CST SUN JAN 22 2017

SHEBOYGAN WI TO PENTWATER MI SOUTH...

...DENSE FOG ADVISORY IN EFFECT UNTIL 3 PM CST THIS AFTERNOON...

.REST OF TODAY...NORTH WINDS 5 TO 10 KT INCREASING TO 10 TO 15 KT
LATE THIS MORNING...FURTHER INCREASING TO 10 TO 20 KT THIS
AFTERNOON. WIDESPREAD DENSE FOG THIS MORNING...THEN AREAS OF DENSE
FOG THIS AFTERNOON. WAVES 1 TO 3 FT BUILDING TO 2 TO 4 FT THIS
AFTERNOON.
.TONIGHT...NORTH WINDS 10 TO 20 KT INCREASING TO 15 TO 25 KT LATE
IN THE EVENING. SLIGHT CHANCE OF RAIN. WAVES BUILDING TO 3 TO 5
FT OCCASIONALLY TO 7 FT.
.MONDAY...NORTH WINDS 20 TO 25 KT. CHANCE OF RAIN. WAVES BUILDING
TO 4 TO 6 FT OCCASIONALLY TO 8 FT.
.MONDAY NIGHT...NORTHWEST WINDS 15 TO 25 KT. CHANCE OF RAIN IN
THE EVENING. WAVES 4 TO 6 FT OCCASIONALLY TO 8 FT.
.TUESDAY...NORTHWEST WINDS 10 TO 20 KT BACKING TO SOUTHWEST 5 TO
10 KT IN THE AFTERNOON. WAVES SUBSIDING TO 1 TO 3 FT.
.TUESDAY NIGHT...EAST WINDS 10 TO 20 KT INCREASING TO 15 TO
25 KT. CHANCE OF RAIN AND SNOW. WAVES BUILDING TO 2 TO 4 FT.
.WEDNESDAY...NORTH WINDS 20 TO 25 KT BECOMING NORTHWEST. SNOW
LIKELY WITH A CHANCE OF RAIN. WAVES 3 TO 6 FT OCCASIONALLY TO 8
FT.
.THURSDAY...NORTHWEST WINDS TO 30 KT BECOMING WEST. CHANCE OF
SNOW. WAVES 4 TO 7 FT OCCASIONALLY TO 9 FT.

$$
LMZ761-222230-
MAFOR 2216/
MICHIGAN NORTH 12504 11600 14800 11810. CHANCE OF RAIN MONDAY
MORNING. WAVES 2 FT OR LESS.

MICHIGAN SOUTH 11804 11814 13820 13830. CHANCE OF RAIN MONDAY
MORNING. WAVES 1 TO 3 FT BUILDING TO 2 TO 4 FT TODAY. WAVES
BUILDING TO 3 TO 5 FT OCCASIONALLY TO 7 FT TONIGHT...AND TO 4 TO 6
FT OCCASIONALLY TO 8 FT MONDAY MORNING.

$$


KJB

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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