Great Lakes Forecast
Issued by NWS

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FZUS63 KLOT 091438
GLFLM

OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
838 AM CST MON JAN 9 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...HIGH PRESSURE OF 30.8 INCHES JUST SOUTH OF THE OHIO
VALLEY WILL SHIFT TO THE EAST COAST TODAY WHILE A TROUGH
AVERAGING 30.1 INCHES OVER WESTERN ONTARIO WILL MOVE ACROSS
NORTHERN LAKE MICHIGAN EARLY MONDAY. ANOTHER LOW OF 29.6 INCHES
WILL FORM OVER THE CENTRAL PLAINS MONDAY AND LIFT ACROSS THE UPPER
MIDWEST TUESDAY TO NEAR JAMES BAY TUESDAY NIGHT AS IT DEEPENS TO
29.2 INCHES. A 30.1 INCHES HIGH WILL MOVE ACROSS THE UPPER MIDWEST
AND GREAT LAKES ON WEDNESDAY AS ANOTHER LOW OF 29.6 INCHES FORMS
OVER THE CENTRAL PLAINS. THIS LOW WILL LIFT ACROSS SOUTHERN LAKE
MICHIGAN THURSDAY AND STRONG HIGH PRESSURE OF 31.0 INCHES WILL
BUILD INTO THE NORTHERN PLAINS THURSDAY AND FRIDAY.

LMZ261-362-364-366-563-565-567-669-868-870-092230-
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 PENTWATER TO MANISTEE MI 5 NM OFFSHORE TO MID
LAKE-
LAKE MICHIGAN FROM WHITEHALL TO PENTWATER MI 5 NM OFFSHORE TO MID
LAKE-
838 AM CST MON JAN 9 2017

PORT WASHINGTON WI TO WHITEHALL MI NORTH...

.REST OF TODAY...WEST WINDS 10 TO 20 KT. CHANCE OF SNOW THROUGH
MID MORNING...THEN SLIGHT CHANCE OF SNOW THIS AFTERNOON. WAVES 6
TO 9 FT OCCASIONALLY TO 11 FT SUBSIDING TO 3 TO 5 FT OCCASIONALLY
TO 7 FT.
.TONIGHT...SOUTH WINDS TO 30 KT INCREASING TO OCCASIONAL GALES TO
35 KT. SNOW. WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT BUILDING TO 5 TO
8 FT OCCASIONALLY TO 10 FT.
.TUESDAY...SOUTH WINDS TO 30 KT. RAIN AND SNOW IN THE
MORNING...THEN RAIN LIKELY WITH POCKETS OF SNOW AND FREEZING RAIN
IN THE AFTERNOON. WAVES 5 TO 8 FT OCCASIONALLY TO 10 FT.
.TUESDAY NIGHT...WEST GALES TO 35 KT BECOMING SOUTHWEST TO 30 KT.
CHANCE OF SNOW IN THE EVENING. WAVES 4 TO 7 FT OCCASIONALLY TO
9 FT.
.WEDNESDAY...SOUTHWEST WINDS TO 30 KT DIMINISHING TO 15 TO 25 KT.
CHANCE OF SNOW AND LIGHT SLEET IN THE MORNING...THEN CHANCE OF
LIGHT SLEET...LIGHT FREEZING RAIN AND SNOW IN THE AFTERNOON.
WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT SUBSIDING TO 1 TO 3 FT.
.WEDNESDAY NIGHT...SOUTHWEST WINDS 10 TO 20 KT VEERING TO
NORTHEAST 15 TO 25 KT. SNOW LIKELY...CHANCE OF LIGHT SLEET AND
LIGHT FREEZING RAIN. WAVES 1 TO 3 FT BUILDING TO 2 TO 4 FT.
.THURSDAY...NORTH WINDS 10 TO 20 KT BECOMING NORTHWEST. CHANCE OF
SNOW. WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT.
.FRIDAY...NORTHWEST WINDS 10 TO 20 KT BECOMING NORTH. WAVES 3 TO
5 FT OCCASIONALLY TO 7 FT.

$$

LMZ080-671-673-675-777-779-872-874-876-878-092230-
LAKE MICHIGAN FROM MICHIGAN CITY IN TO ST. JOSEPH MI 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 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-
838 AM CST MON JAN 9 2017

PORT WASHINGTON WI TO WHITEHALL MI SOUTH...

...GALE WATCH IN EFFECT FROM LATE TONIGHT THROUGH TUESDAY
MORNING...

.REST OF TODAY...SOUTHWEST WINDS TO 25 KT BECOMING SOUTH 15 TO 25
KT. CHANCE OF SNOW THROUGH MID MORNING...THEN SLIGHT CHANCE OF
SNOW THIS AFTERNOON. WAVES 7 TO 10 FT OCCASIONALLY TO 13 FT
SUBSIDING TO 3 TO 5 FT OCCASIONALLY TO 7 FT.
.TONIGHT...SOUTHWEST WINDS TO 30 KT INCREASING TO OCCASIONAL GALES
TO 35 KT. SNOW LIKELY IN THE EVENING...THEN SNOW...RAIN LIKELY
WITH A CHANCE OF LIGHT FREEZING RAIN OVERNIGHT. WAVES 4 TO 6 FT
OCCASIONALLY TO 8 FT BUILDING TO 5 TO 8 FT OCCASIONALLY TO 10 FT.
.TUESDAY...SOUTH GALES TO 35 KT BECOMING SOUTHWEST TO 30 KT. RAIN
IN THE MORNING...THEN RAIN LIKELY IN THE AFTERNOON. WAVES 6 TO
9 FT OCCASIONALLY TO 11 FT.
.TUESDAY NIGHT...WEST WINDS TO 30 KT BECOMING SOUTHWEST 15 TO
25 KT. WAVES 5 TO 8 FT OCCASIONALLY TO 10 FT SUBSIDING TO 4 TO
6 FT OCCASIONALLY TO 8 FT.
.WEDNESDAY...SOUTH WINDS TO 30 KT DIMINISHING TO 15 TO 25 KT.
WAVES 2 TO 4 FT SUBSIDING TO 1 TO 3 FT.
.WEDNESDAY NIGHT...SOUTHEAST WINDS 10 TO 20 KT BACKING TO NORTH.
RAIN AND LIGHT FREEZING RAIN LIKELY. WAVES 1 TO 3 FT BUILDING TO
3 TO 5 FT OCCASIONALLY TO 7 FT.
.THURSDAY...NORTH WINDS 10 TO 20 KT BECOMING NORTHWEST. CHANCE OF
RAIN AND LIGHT FREEZING RAIN. WAVES 3 TO 5 FT OCCASIONALLY TO
7 FT.
.FRIDAY...NORTH WINDS 10 TO 20 KT. WAVES 2 TO 4 FT BUILDING TO
3 TO 5 FT OCCASIONALLY TO 7 FT.

$$

LMZ761-092230-
MAFOR 0916/
MICHIGAN NORTH 11627 11620 11520 11437 14447. CHANCE OF SNOW LATE
THIS MORNING. WAVES 5 TO 8 FT OCCASIONALLY TO 10 FT SUBSIDING TO 3
TO 5 FT OCCASIONALLY TO 7 FT TODAY. WAVES 3 TO 5 FT OCCASIONALLY
TO 7 FT BUILDING TO 5 TO 8 FT OCCASIONALLY TO 10 FT TONIGHT. WAVES
5 TO 8 FT OCCASIONALLY TO 10 FT TUESDAY MORNING.

MICHIGAN SOUTH 11530 11520 11530 11440 13457 11456. CHANCE OF
SNOW LATE THIS MORNING. CHANCE OF LIGHT FREEZING RAIN AFTER
MIDNIGHT TONIGHT. WAVES 5 TO 8 FT OCCASIONALLY TO 10 FT SUBSIDING
TO 3 TO 5 FT OCCASIONALLY TO 7 FT TODAY. WAVES 4 TO 6 FT
OCCASIONALLY TO 8 FT BUILDING TO 6 TO 9 FT OCCASIONALLY TO 11 FT
TONIGHT. WAVES 6 TO 9 FT OCCASIONALLY TO 11 FT TUESDAY MORNING.

$$


MM

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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