Hazardous Weather Outlook
Issued by NWS Chicago, IL

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FLUS43 KLOT 210154 AAA
HWOLOT

HAZARDOUS WEATHER OUTLOOK...UPDATED
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
854 PM CDT WED AUG 20 2014

ILZ003>006-008-010>014-019>023-032-033-039-INZ001-002-010-011-019-
220200-
WINNEBAGO-BOONE-MCHENRY-LAKE ILLINOIS-OGLE-LEE-DE KALB-KANE-
DUPAGE-COOK-LA SALLE-KENDALL-GRUNDY-WILL-KANKAKEE-LIVINGSTON-
IROQUOIS-FORD-LAKE INDIANA-PORTER-NEWTON-JASPER-BENTON-
854 PM CDT WED AUG 20 2014 /954 PM EDT WED AUG 20 2014/

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH CENTRAL ILLINOIS...
NORTHEAST ILLINOIS AND NORTHWEST INDIANA.

.DAY ONE...TONIGHT.

  WEATHER HAZARDS EXPECTED:

   SCATTERED THUNDERSTORMS...SOME COULD PRODUCE:
   WIND GUSTS TO 50 MPH.
   PEA TO NICKEL SIZE HAIL.
   HEAVY RAINFALL LEADING TO LOCALIZED FLOODING.
   FREQUENT CLOUD TO GROUND LIGHTNING.

  AREAS AFFECTED AND TIMING:

   ISOLATED THUNDERSTORMS WILL BE POSSIBLE ACROSS PORTIONS OF
   NORTHERN ILLINOIS AND NORTHWEST INDIANA OVERNIGHT...WITH
   THE POTENTIAL AND COVERAGE INCREASING DURING THE PRE-DAWN
   HOURS AND INTO THURSDAY MORNING.

  DISCUSSION:

   A WARM FRONT FROM NEBRASKA TO DOWNSTATE ILLINOIS WILL LIFT
   SLOWLY NORTH OVERNIGHT AND THURSDAY. ISOLATED SHOWERS AND
   THUNDERSTORMS WILL DEVELOP OVERNIGHT NORTH OF THE FRONT...
   WITH COVERAGE EXPECTED TO INCREASE DURING THE PRE-DAWN HOURS.
   AN AREA OF MORE SUBSTANTIAL SHOWERS AND STORMS IS EXPECTED
   TO DEVELOP OVER PORTIONS OF MINNESOTA AND NORTHWEST IOWA
   OVERNIGHT...WHICH ARE EXPECTED TO MOVE INTO THE OUTLOOK AREA
   EARLY THURSDAY MORNING. A VERY WARM AND HUMID LATE SUMMER
   AIR MASS IN PLACE ACROSS THE REGION WILL ALLOW STORMS TO
   PRODUCE LOCALLY HEAVY RAINFALL...WHICH COULD LEAD TO
   LOCALIZED FLOODING IF SEVERAL STORMS TRACK ACROSS THE SAME
   AREAS REPEATEDLY. IN ADDITION...WHILE NO WIDESPREAD SEVERE
   WEATHER IS EXPECTED...A FEW OF THE STRONGEST THUNDERSTORMS
   MAY BE CAPABLE OF PRODUCING WIND GUSTS UP TO 50 MPH AND
   SMALL HAIL.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY.

THUNDERSTORMS...SOME OF WHICH COULD BE STRONG TO SEVERE...ARE
LIKELY THURSDAY MORNING...AND AGAIN AND THURSDAY NIGHT WITH
HEAVY RAINFALL LIKELY OCCURRING WITH ANY STRONGER STORMS.

THERE WILL CONTINUE TO BE PERIODIC CHANCES FOR THUNDERSTORMS
FRIDAY THROUGH TUESDAY.

HEAT INDICES COULD EXCEED 100 DEGREES ON FRIDAY...PRIMARILY FOR
AREAS SOUTH OF INTERSTATE 80.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE NECESSARY THROUGH TONIGHT.

&&

$$

LMZ740>745-220200-
WINTHROP HARBOR TO WILMETTE HARBOR-
WILMETTE HARBOR TO NORTHERLY ISLAND-
NORTHERLY ISLAND TO CALUMET HARBOR-CALUMET HARBOR TO GARY-
GARY TO BURNS HARBOR-BURNS HARBOR TO MICHIGAN CITY-
854 PM CDT WED AUG 20 2014

THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE ILLINOIS NEARSHORE
WATERS OF LAKE MICHIGAN AND THE INDIANA NEARSHORE WATERS OF LAKE
MICHIGAN.

.DAY ONE...TONIGHT.

THERE IS A CHANCE OF THUNDERSTORMS LATE TONIGHT.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY.

THERE WILL CONTINUE TO BE PERIODIC CHANCES FOR THUNDERSTORMS
THURSDAY THROUGH TUESDAY. THE BEST CHANCE FOR STORMS WILL BE
THURSDAY INTO THURSDAY NIGHT.

&&

$$

LMZ080-261-362-364-366-563-565-567-669-671-673-675-777-779-868-
870-872-874-876-878-220200-
LAKE MICHIGAN FROM MICHIGAN CITY IN TO ST. JOSEPH MI 5 NM
OFFSHORE TO MID LAKE-
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 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-
854 PM CDT WED AUG 20 2014

THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE OPEN WATERS OF LAKE
MICHIGAN.

.DAY ONE...TONIGHT.

THERE IS A CHANCE OF THUNDERSTORMS LATE TONIGHT ACROSS THE
CENTRAL AND SOUTHERN PORTIONS OF THE LAKE.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY.

THERE WILL CONTINUE TO BE PERIODIC CHANCES FOR THUNDERSTORMS
THURSDAY THROUGH TUESDAY. THE BEST CHANCE FOR STORMS WILL BE
THURSDAY INTO THURSDAY NIGHT.

&&

$$

RATZER

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