Great Lakes Forecast
Issued by NWS

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000
FZUS63 KLOT 212059
GLFLM

OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
259 PM CST SAT JAN 21 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...LOW PRESSURE OF 29.4 INCHES OVER THE UPPER MIDWEST
WILL GRAUALLY SHIFT A WARM FRONT NORTHWARD ACROSS THE LAKE TONIGHT.
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. A WEAK HIGH PRESSURE RIDGE AROUND 29.6
INCHES WILL MOVE OVER THE LAKE TUESDAY.

LMZ261-362-364-366-563-565-567-669-671-673-868-870-872-874-220415-
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 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 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-
259 PM CST SAT JAN 21 2017

WIND POINT WI TO HOLLAND MI NORTH...

...DENSE FOG ADVISORY IN EFFECT UNTIL 3 PM CST SUNDAY...

.TONIGHT...SOUTHEAST WINDS 10 TO 20 KT BECOMING SOUTH AND
DIMINISHING TO 10 TO 15 KT. WIDESPREAD DENSE FOG. SLIGHT CHANCE
OF RAIN AND DRIZZLE. WAVES 1 TO 3 FT.
.SUNDAY...SOUTH WINDS 5 TO 10 KT VEERING TO NORTH. WIDESPREAD
DENSE FOG IN THE MORNING. WAVES 1 TO 2 FT.
.SUNDAY NIGHT...NORTH WINDS 15 TO 20 KT. CHANCE OF RAIN
OVERNIGHT. WAVES 2 TO 4 FT.
.MONDAY...NORTH WINDS 15 TO 20 KT. CHANCE OF RAIN. WAVES 2 TO
4 FT.
.MONDAY NIGHT...NORTH WINDS 10 TO 20 KT. CHANCE OF RAIN AND SNOW
LIKELY IN THE EVENING...THEN CHANCE OF RAIN OVERNIGHT. WAVES 2 TO
4 FT.
.TUESDAY...NORTHWEST WINDS 10 TO 20 KT BECOMING WEST 10 TO 15 KT.
CHANCE OF SNOW IN THE MORNING. WAVES 1 TO 3 FT.
.TUESDAY NIGHT...NORTH WINDS 10 TO 15 KT BECOMING NORTHEAST 10 TO
20 KT. RAIN...SNOW LIKELY WITH A CHANCE OF LIGHT FREEZING RAIN.
WAVES 1 TO 2 FT.
.WEDNESDAY...NORTH WINDS 10 TO 20 KT. CHANCE OF RAIN...SNOW AND
LIGHT FREEZING RAIN LIKELY. WAVES 2 TO 4 FT.
.THURSDAY...NORTHWEST WINDS 15 TO 25 KT. CHANCE OF SNOW SHOWERS.
WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT.

$$

LMZ080-675-777-779-876-878-220415-
LAKE MICHIGAN FROM MICHIGAN CITY IN TO ST. JOSEPH MI 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 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-
259 PM CST SAT JAN 21 2017

WIND POINT WI TO HOLLAND MI SOUTH...

.TONIGHT...SOUTH WINDS 10 TO 20 KT BACKING TO NORTHEAST 5 TO 10
KT OVERNIGHT. PATCHY FOG THIS EVENING...THEN AREAS OF FOG
OVERNIGHT. WAVES 1 TO 3 FT SUBSIDING TO 1 FT OR LESS.
.SUNDAY...NORTHEAST WINDS 10 TO 15 KT BECOMING NORTH 10 TO 20 KT.
WIDESPREAD DENSE FOG IN THE MORNING. WAVES 2 TO 4 FT.
.SUNDAY NIGHT...NORTH WINDS 10 TO 20 KT INCREASING TO 20 TO 25
KT. CHANCE OF RAIN OVERNIGHT. WAVES 4 TO 7 FT OCCASIONALLY TO 9
FT.
.MONDAY...NORTH WINDS 15 TO 25 KT. CHANCE OF RAIN. WAVES 4 TO
7 FT OCCASIONALLY TO 9 FT.
.MONDAY NIGHT...NORTHWEST WINDS EASING TO 10 TO 20 KT. WAVES
SUBSIDING TO 3 TO 5 FT OCCASIONALLY TO 7 FT.
.TUESDAY...NORTHWEST WINDS 10 TO 20 KT BACKING TO SOUTHWEST 10 TO
15 KT. WAVES 1 TO 3 FT.
.TUESDAY NIGHT...SOUTHEAST WINDS 10 TO 15 KT INCREASING TO 10 TO
20 KT. RAIN LIKELY. WAVES 1 TO 3 FT.
.WEDNESDAY...SOUTH WINDS 10 TO 20 KT VEERING TO NORTHWEST. RAIN
LIKELY. WAVES 2 TO 4 FT.
.THURSDAY...NORTHWEST WINDS 15 TO 25 KT BECOMING WEST. WAVES 3 TO
5 FT OCCASIONALLY TO 7 FT.

$$

LMZ761-220415-
MAFOR 2122/
MICHIGAN NORTH 12324 13414 12404 11500. WAVES 1 TO 3 FT TONIGHT.
WAVES 1 TO 2 FT SUNDAY.

MICHIGAN SOUTH 11424 12513 11403 11104 12114 11820. WAVES 1 TO 3
FT SUBSIDING TO 1 FOOT OR LESS TONIGHT. WAVES BUILDING TO 2 TO 4
FT SUNDAY.

$$


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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