Great Lakes Forecast
Issued by NWS

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000
FZUS63 KLOT 171952
GLFLM

OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
252 PM CDT FRI MAR 17 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...A 29.8 INCH LOW OVER SOUTHWEST ONTARIO WILL WEAKEN TO
29.9 INCHES AS IT DIVES SOUTHEAST OVER THE GREAT LAKES REACHING
THE MID ATLANTIC COAST BY SATURDAY EVENING. THE LOWS COLD FRONT
WILL MOVE OVER THE LAKE LATE TONIGHT. MEANWHILE A HIGH PRESSURE
RIDGE AVERAGING 30.4 INCHES WILL BUILD OVER THE PLAINS AND THEN
REACH THE WESTERN GREAT LAKES SUNDAY MORNING. ANOTHER STRONG LOW
FORMS OVER SOUTHWEST CANADA SATURDAY EVENING AND DEEPENS TO AROUND
28.9 INCHES AS IT REACHES HUDSON BAY SUNDAY NIGHT. ITS COLD FRONT
SLIDES OVER THE LAKE MONDAY MORNING.

LMZ261-362-364-366-563-565-567-868-180330-
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-
252 PM CDT FRI MAR 17 2017

SHEBOYGAN WI TO PENTWATER MI NORTH...

.TONIGHT...SOUTH WINDS 10 TO 20 KT VEERING TO NORTHWEST 15 TO 25
KT OVERNIGHT. NUMEROUS SNOW SHOWERS AND SCATTERED RAIN SHOWERS
THIS EVENING... THEN SCATTERED RAIN AND SNOW SHOWERS OVERNIGHT.
WAVES 3 TO 6 FT OCCASIONALLY TO 8 FT.
.SATURDAY...NORTHWEST WINDS TO 30 KT BECOMING NORTH 15 TO 25 KT.
SLIGHT CHANCE OF SNOW SHOWERS IN THE MORNING. WAVES 4 TO 6 FT
OCCASIONALLY TO 8 FT SUBSIDING TO 3 TO 5 FT OCCASIONALLY TO 7 FT.
.SATURDAY NIGHT...NORTH WINDS 10 TO 20 KT DIMINISHING TO 10 TO
15 KT. WAVES 2 TO 4 FT.
.SUNDAY...SOUTH WINDS 10 TO 15 KT INCREASING TO 30 KT IN THE
AFTERNOON. WAVES BUILDING TO 3 TO 5 FT OCCASIONALLY TO 7 FT.
.SUNDAY NIGHT...SOUTH WINDS TO 30 KT BECOMING SOUTHWEST 15 TO
25 KT. CHANCE OF RAIN SHOWERS. WAVES 3 TO 6 FT OCCASIONALLY TO 8
FT.
.MONDAY...WEST WINDS 10 TO 20 KT BECOMING NORTHWEST. CHANCE OF
RAIN SHOWERS IN THE MORNING. WAVES 2 TO 4 FT.
.MONDAY NIGHT...NORTHWEST WINDS 10 TO 20 KT INCREASING TO 15 TO
25 KT. WAVES 2 TO 4 FT.
.TUESDAY...NORTHWEST WINDS 15 TO 25 KT. WAVES 2 TO 4 FT.
.WEDNESDAY...NORTH WINDS 15 TO 25 KT DIMINISHING TO 10 TO 20 KT.
WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-180330-
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-
252 PM CDT FRI MAR 17 2017

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.TONIGHT...SOUTH WINDS 10 TO 20 KT BECOMING WEST LATE THIS
EVENING...THEN BECOMING NORTHWEST TO 30 KT LATE. AREAS OF FOG
THIS EVENING. SCATTERED RAIN SHOWERS THIS EVENING...THEN SCATTERED
RAIN SHOWERS WITH ISOLATED SNOW SHOWERS OVERNIGHT. WAVES 3 TO 5
FT OCCASIONALLY TO 7 FT BUILDING TO 4 TO 7 FT OCCASIONALLY TO 9
FT.
.SATURDAY...NORTHWEST WINDS TO 30 KT DIMINISHING TO 15 TO 25 KT.
CHANCE OF RAIN AND SNOW SHOWERS IN THE MORNING. WAVES 4 TO 7 FT
OCCASIONALLY TO 9 FT.
.SATURDAY NIGHT...NORTHWEST WINDS 15 TO 25 KT BECOMING NORTH
10 TO 15 KT. WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT SUBSIDING TO
2 TO 4 FT.
.SUNDAY...EAST WINDS 10 TO 15 KT BECOMING SOUTH 15 TO 25 KT IN
THE AFTERNOON. WAVES 2 TO 4 FT.
.SUNDAY NIGHT...SOUTH WINDS TO 30 KT DIMINISHING TO 15 TO 25 KT.
RAIN SHOWERS LIKELY OVERNIGHT. WAVES 3 TO 5 FT OCCASIONALLY TO
7 FT.
.MONDAY...WEST WINDS 10 TO 20 KT BECOMING NORTHWEST. CHANCE OF
RAIN SHOWERS IN THE MORNING. WAVES 2 TO 4 FT.
.MONDAY NIGHT...NORTH WINDS 10 TO 20 KT BECOMING NORTHWEST. WAVES
1 TO 3 FT.
.TUESDAY...NORTHWEST WINDS 10 TO 20 KT BECOMING NORTH. WAVES 1 TO
3 FT.
.WEDNESDAY...NORTH WINDS 15 TO 25 KT DIMINISHING TO 10 TO 20 KT.
WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT.

$$

LMZ761-180330-
MAFOR 1721/
MICHIGAN NORTH 12427 11527 11620 11730 12740 11830. SCATTERED
RAIN SHOWERS EARLY THIS EVENING. SCATTERED RAIN AND SNOW SHOWERS
LATE THIS EVENING. WAVES 3 TO 6 FT OCCASIONALLY TO 8 FT TONIGHT.
WAVES 4 TO 6 FT OCCASIONALLY TO 8 FT SUBSIDING TO 3 TO 5 FT
OCCASIONALLY TO 7 FT SATURDAY.

MICHIGAN SOUTH 11423 11513 11620 11630 13740 11730. SCATTERED
RAIN SHOWERS TONIGHT. CHANCE OF RAIN AND SNOW SHOWERS LATE
SATURDAY. WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT BUILDING TO 4 TO 7
FT OCCASIONALLY TO 9 FT TONIGHT. WAVES 4 TO 7 FT OCCASIONALLY TO
9 FT SATURDAY.

$$


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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