Great Lakes Forecast
Issued by NWS

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FZUS63 KLOT 182044
GLFLM

OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
244 PM CST SAT FEB 18 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...LOW PRESSURE OF 29.2 INCHES JUST SOUTH OF JAMES BAY
WILL MOVE ACROSS SOUTHERN QUEBEC TONIGHT WHILE FILLING TO 29.4
INCHES. HIGH PRESSURE OF 30.1 INCHES OVER THE SOUTHEASTERN STATES
WILL REMAIN NEARLY STATIONARY INTO EARLY NEXT WEEK. MEANWHILE...
HIGH PRESSURE OF 29.9 INCHES OVER THE MIDDLE AND UPPER MISSISSIPPI
VALLEY WILL SLOWLY BUILD EAST AND MERGE WITH THE HIGH OVER THE
SOUTHEAST ON SUNDAY...WITH THE HIGH PRESSURE AVERAGING 30.2 INCHES
EXTENDING FROM HUDSON BAY THROUGH THE EASTERN GULF OF MEXICO BY
MONDAY. THE RIDGE WILL REMAIN NEARLY STATIONARY THROUGH EARLY NEXT
WEEK. LOW PRESSURE OF 29.5 INCHES IS EXPECTED TO MOVE OUT OF THE
NORTHERN ROCKIES INTO THE NORTHERN PLAINS SUNDAY NIGHT. THE LOW
WILL TRACK NORTHEAST TO LAKE WINNIPEG MONDAY NIGHT WITH A TRAILING
COLD FRONT EXTENDING SOUTH TO THE CENTRAL PLAINS. THE LOW SHOULD
CONTINUE TO SLOWLY LIFT NORTHEAST...DEEPENING TO 29.2 INCHES
MONDAY NIGHT WHILE THE COLD FRONT PUSHES ACROSS THE LAKE. THE LOW
WILL CONTINUE TO SLOWLY TRACK NORTHEAST TO HUDSON BAY TUESDAY
NIGHT AS A WEAK RIDGE OF HIGH PRESSURE OF 30.1 INCHES BUILDS
ACROSS THE LOWER MISSISSIPPI VALLEY AND A WEAK LOW OF 29.5 INCHES
TRACKS ACROSS THE NORTHERN PLAINS.

LMZ261-362-364-366-563-565-190415-
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-
244 PM CST SAT FEB 18 2017

TWO RIVERS WI TO MANISTEE MI NORTH...

.TONIGHT...WEST WINDS 10 TO 20 KT DIMINISHING TO 10 TO 15 KT.
WAVES 1 TO 3 FT.
.SUNDAY...NORTHWEST WINDS 10 TO 15 KT BECOMING NORTH. WAVES 1 TO
3 FT.
.SUNDAY NIGHT...NORTHEAST WINDS 10 TO 15 KT BECOMING SOUTHEAST
10 TO 20 KT. WAVES 1 TO 2 FT.
.MONDAY...SOUTHEAST WINDS 15 TO 25 KT. WAVES 3 TO 5 FT
OCCASIONALLY TO 7 FT.
.MONDAY NIGHT...SOUTHEAST WINDS TO 30 KT BECOMING SOUTH. RAIN
SHOWERS. WAVES 4 TO 7 FT OCCASIONALLY TO 9 FT.
.TUESDAY...WEST WINDS 10 TO 20 KT BECOMING SOUTHWEST. CHANCE OF
RAIN SHOWERS IN THE MORNING. WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT
SUBSIDING TO 2 TO 4 FT.
.TUESDAY NIGHT...SOUTHWEST WINDS 10 TO 20 KT. WAVES 1 TO 3 FT.
.WEDNESDAY...SOUTHWEST WINDS 15 TO 25 KT. WAVES 2 TO 4 FT.
.THURSDAY...NORTH WINDS 10 TO 20 KT INCREASING TO 15 TO 25 KT.
CHANCE OF RAIN SHOWERS. WAVES 2 TO 4 FT.

$$

LMZ080-567-669-671-673-675-777-779-868-870-872-874-876-878-190415-
LAKE MICHIGAN FROM MICHIGAN CITY IN TO ST. JOSEPH MI 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 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 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-
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-
244 PM CST SAT FEB 18 2017

TWO RIVERS WI TO MANISTEE MI SOUTH...

.TONIGHT...WEST WINDS 10 TO 20 KT BECOMING NORTHWEST 10 TO 15 KT.
WAVES 1 TO 2 FT.
.SUNDAY...NORTHWEST WINDS 5 TO 10 KT VEERING TO NORTHEAST. WAVES
1 TO 2 FT.
.SUNDAY NIGHT...EAST WINDS 10 TO 15 KT BECOMING SOUTHEAST 10 TO
20 KT. WAVES 1 TO 3 FT.
.MONDAY...SOUTHEAST WINDS 15 TO 25 KT. WAVES 3 TO 5 FT
OCCASIONALLY TO 7 FT.
.MONDAY NIGHT...SOUTHEAST WINDS TO 30 KT BECOMING SOUTH. RAIN
SHOWERS LIKELY IN THE EVENING,...THEN RAIN SHOWERS OVERNIGHT.
WAVES 4 TO 7 FT OCCASIONALLY TO 9 FT.
.TUESDAY...WEST WINDS 10 TO 20 KT. CHANCE OF RAIN SHOWERS IN THE
MORNING. WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT SUBSIDING TO 1 TO
3 FT.
.TUESDAY NIGHT...SOUTHWEST WINDS 10 TO 20 KT. WAVES 1 TO 3 FT.
.WEDNESDAY...SOUTHWEST WINDS 10 TO 20 KT INCREASING TO 15 TO
25 KT. WAVES 2 TO 4 FT.
.THURSDAY...NORTH WINDS 10 TO 20 KT BECOMING NORTHEAST. CHANCE OF
RAIN SHOWERS. WAVES 2 TO 4 FT.

$$

LMZ761-190415-
MAFOR 1822/
MICHIGAN NORTH 13620 11610 13710 11810. WAVES 1 TO 3 FT.

MICHIGAN SOUTH 12620 11610 11710 12700 11800 11100. WAVES 1 TO 2
FT.

$$

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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