weather.gov     
National Weather Service

Watches, Warnings & Advisories
NWS Homepage

One product issued by NWS for:
Share |


Hazardous Weather Outlook

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
358 PM CDT FRI AUG 22 2014

ILZ003>006-008-010>014-019>023-032-033-039-INZ001-002-010-011-019-
232100-
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-
358 PM CDT FRI AUG 22 2014 /458 PM EDT FRI AUG 22 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:
    TORRENTIAL RAINFALL AND FLASH FLOODING.
    FREQUENT CLOUD TO GROUND LIGHTNING.
    WIND GUSTS OVER 30 MPH.

   AREAS AFFECTED AND TIMING:

   ADDITIONAL THUNDERSTORMS ARE POSSIBLE LATE THIS AFTERNOON AND
   TONIGHT...THOUGH CONFIDENCE REGARDING COVERAGE AND TIMING IS
   SOMEWHAT LOW.

   DISCUSSION:

   VERY WARM AND HUMID AIR WILL REMAIN IN PLACE AS AN UPPER LEVEL
   RIDGE SLOWLY BUILDS ACROSS THE REGION. THUNDERSTORMS ARE
   POSSIBLE LATER THIS AFTERNOON  WITH A SLIGHTLY BETTER CHANCE
   TONIGHT. THE MAIN THREAT FROM THESE STORMS WILL BE TORRENTIAL
   RAINFALL WHICH MAY LEAD TO FLASH FLOODING. WITH THE SOIL
   SATURATED IN MANY AREAS...ANY ADDITIONAL HEAVY RAIN MAY QUICKLY
   LEAD TO FLASH FLOODING. RAINFALL RATES WITH ANY THUNDERSTORMS
   THAT DEVELOP COULD REACH 2 TO 3 INCHES PER HOUR.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY.

THERE IS A CHANCE OF THUNDERSTORMS SATURDAY AND SATURDAY NIGHT...
SUNDAY AFTERNOON...WITH CHANCES INCREASING SOME MONDAY THROUGH
EARLY THURSDAY. HEAVY RAIN AND FLASH FLOODING WILL BE POSSIBLE
WITH ANY THUNDERSTORMS THAT DEVELOP.

HEAT INDICES COULD EXCEED 100 DEGREES SUNDAY AND MONDAY
AFTERNOONS.

.SPOTTER INFORMATION STATEMENT...

SPOTTERS ARE ENCOURAGED TO REPORT HEAVY RAINFALL TOTALS TO THE
NATIONAL WEATHER SERVICE CHICAGO.

&&

$$



U.S. Dept. of Commerce
NOAA National Weather Service
1325 East West Highway
Silver Spring, MD 20910
E-mail: w-nws.webmaster@noaa.gov
Page last modified: May 16, 2007
NATIONAL WEATHER SERVICE: for Safety, for Work, for Fun - FOR LIFE