

000 

WGUS73 KLOT 240355

FFSLOT



FLASH FLOOD STATEMENT

NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL

1054 PM CDT THU AUG 23 2007



ILC031-037-043-063-089-091-093-099-103-105-141-197-INC089-127-240900-

/X.CON.KLOT.FF.W.0006.000000T0000Z-070824T0900Z/

/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

OGLE IL-COOK IL-KANE IL-DEKALB IL-DUPAGE IL-LEE IL-LIVINGSTON IL-

GRUNDY IL-KANKAKEE IL-KENDALL IL-WILL IL-LA SALLE IL-LAKE IN-

PORTER IN-

1054 PM CDT THU AUG 23 2007



...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 400 AM CDT FOR

PORTER...LAKE...LA SALLE...WILL...KENDALL...KANKAKEE...GRUNDY...

NORTHERN LIVINGSTON...LEE...DUPAGE...DEKALB...KANE...COOK AND OGLE

COUNTIES...



AT 1054 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO

INDICATE SCATTERED CONTINUING TO DEVELOP AND MOVE ACROSS THE SAME 

PORTIONS OF NORTHERN ILLINOIS AND NORTHWEST INDIANA...ESPECIALLY 

ALONG THE INTERSTATE 80 CORRIDOR FROM LA SALLE...EAST THROUGH 

OTTAWA...JOLIET...AND TINLEY PARK ILLINOIS AND INTO GARY INDIANA. 

DOPPLER RADAR AND SPOTTERS INDICATE THAT ANYWHERE FROM TWO AND A   

HALF TO LOCALLY MORE THAN SIX INCHES OF RAIN HAS FALLEN ACROSS THE 

WARNING AREA THURSDAY AFTERNOON AND EVENING. LAW ENFORCEMENT 

OFFICIALS FROM ACROSS THE AREA INDICATE THAT WIDESPREAD AND IN SOME 

CASES SERIOUS FLASH FLOODING IS ONGOING ACROSS THE WARNING AREA.



RUN OFF FROM THE HEAVY RAIN THAT HAS ALREADY FALLEN WILL CONTINUE TO 

PRODUCE FLASH FLOODING. IN ADDITION...ADDITIONAL THUNDERSTORMS 

DEVELOPING OVER NORTHWEST ILLINOIS AND IOWA WILL CONTINUE TO PRODUCE 

MORE LOCALLY HEAVY RAINFALL OVERNIGHT. SOME LOCATIONS MAY SEE UP TO 

AN ADDITIONAL TWO INCHES OR MORE OF RAIN BETWEEN 11 PM AND 3 AM CDT. 

ANY ADDITIONAL HEAVY RAINFALL WILL IMMEDIATELY RUN OFF AND COULD 

LEAD TO POTENTIALLY SIGNIFICANT FLASH FLOODING.



THIS IS A POTENTIALLY DANGEROUS SITUATION. FLASH FLOODING IS ONE OF 

NATURES NUMBER ONE KILLERS...ANYONE TRAVELING ACROSS NORTHERN 

ILLINOIS TONIGHT SHOULD USE EXTREME CAUTION. IF YOU ENCOUNTER A 

FLOODED ROADWAY...TURN AROUND...DONT DROWN



LAT...LON 4130 8714 4120 8734 4118 8753 4103 8753

      4102 8758 4093 8904 4110 8904 4113 8917

      4158 8915 4161 8959 4219 8968 4219 8918

      4215 8917 4215 8776 4178 8757 4163 8740

      4159 8730 4170 8694 4125 8694



$$



RATZER



000 

WGUS73 KLOT 240355

FFSLOT



FLASH FLOOD STATEMENT

NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL

1054 PM CDT THU AUG 23 2007



ILC031-037-043-063-089-091-093-099-103-105-141-197-INC089-127-240900-

/X.CON.KLOT.FF.W.0006.000000T0000Z-070824T0900Z/

/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

OGLE IL-COOK IL-KANE IL-DEKALB IL-DUPAGE IL-LEE IL-LIVINGSTON IL-

GRUNDY IL-KANKAKEE IL-KENDALL IL-WILL IL-LA SALLE IL-LAKE IN-

PORTER IN-

1054 PM CDT THU AUG 23 2007



...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 400 AM CDT FOR

PORTER...LAKE...LA SALLE...WILL...KENDALL...KANKAKEE...GRUNDY...

NORTHERN LIVINGSTON...LEE...DUPAGE...DEKALB...KANE...COOK AND OGLE

COUNTIES...



AT 1054 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO

INDICATE SCATTERED CONTINUING TO DEVELOP AND MOVE ACROSS THE SAME 

PORTIONS OF NORTHERN ILLINOIS AND NORTHWEST INDIANA...ESPECIALLY 

ALONG THE INTERSTATE 80 CORRIDOR FROM LA SALLE...EAST THROUGH 

OTTAWA...JOLIET...AND TINLEY PARK ILLINOIS AND INTO GARY INDIANA. 

DOPPLER RADAR AND SPOTTERS INDICATE THAT ANYWHERE FROM TWO AND A   

HALF TO LOCALLY MORE THAN SIX INCHES OF RAIN HAS FALLEN ACROSS THE 

WARNING AREA THURSDAY AFTERNOON AND EVENING. LAW ENFORCEMENT 

OFFICIALS FROM ACROSS THE AREA INDICATE THAT WIDESPREAD AND IN SOME 

CASES SERIOUS FLASH FLOODING IS ONGOING ACROSS THE WARNING AREA.



RUN OFF FROM THE HEAVY RAIN THAT HAS ALREADY FALLEN WILL CONTINUE TO 

PRODUCE FLASH FLOODING. IN ADDITION...ADDITIONAL THUNDERSTORMS 

DEVELOPING OVER NORTHWEST ILLINOIS AND IOWA WILL CONTINUE TO PRODUCE 

MORE LOCALLY HEAVY RAINFALL OVERNIGHT. SOME LOCATIONS MAY SEE UP TO 

AN ADDITIONAL TWO INCHES OR MORE OF RAIN BETWEEN 11 PM AND 3 AM CDT. 

ANY ADDITIONAL HEAVY RAINFALL WILL IMMEDIATELY RUN OFF AND COULD 

LEAD TO POTENTIALLY SIGNIFICANT FLASH FLOODING.



THIS IS A POTENTIALLY DANGEROUS SITUATION. FLASH FLOODING IS ONE OF 

NATURES NUMBER ONE KILLERS...ANYONE TRAVELING ACROSS NORTHERN 

ILLINOIS TONIGHT SHOULD USE EXTREME CAUTION. IF YOU ENCOUNTER A 

FLOODED ROADWAY...TURN AROUND...DONT DROWN



LAT...LON 4130 8714 4120 8734 4118 8753 4103 8753

      4102 8758 4093 8904 4110 8904 4113 8917

      4158 8915 4161 8959 4219 8968 4219 8918

      4215 8917 4215 8776 4178 8757 4163 8740

      4159 8730 4170 8694 4125 8694



$$



RATZER



000 

WGUS73 KLOT 240407 CCA

FFSLOT



FLASH FLOOD STATEMENT...CORRECTED

NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL

1054 PM CDT THU AUG 23 2007



ILC031-037-043-063-089-091-093-099-103-105-141-197-INC089-127-240900-

/X.COR.KLOT.FF.W.0006.000000T0000Z-070824T0900Z/

/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

OGLE IL-COOK IL-KANE IL-DEKALB IL-DUPAGE IL-LEE IL-LIVINGSTON IL-

GRUNDY IL-KANKAKEE IL-KENDALL IL-WILL IL-LA SALLE IL-LAKE IN-

PORTER IN-

1054 PM CDT THU AUG 23 2007



...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 400 AM CDT FOR

PORTER...LAKE...LA SALLE...WILL...KENDALL...KANKAKEE...GRUNDY...

NORTHERN LIVINGSTON...LEE...DUPAGE...DEKALB...KANE...COOK AND OGLE

COUNTIES...



AT 1054 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO

INDICATE SCATTERED THUNDERSTORMS DEVELOPING AND MOVING ACROSS THE 

SAME PORTIONS OF NORTHERN ILLINOIS AND NORTHWEST 

INDIANA...ESPECIALLY ALONG THE INTERSTATE 80 CORRIDOR FROM LA 

SALLE...EAST THROUGH OTTAWA...JOLIET...AND TINLEY PARK ILLINOIS AND 

INTO GARY INDIANA. DOPPLER RADAR AND SPOTTERS INDICATE THAT ANYWHERE 

FROM TWO AND A HALF TO LOCALLY MORE THAN SIX INCHES OF RAIN HAS 

FALLEN ACROSS THE WARNING AREA THURSDAY AFTERNOON AND EVENING. LAW 

ENFORCEMENT OFFICIALS FROM ACROSS THE AREA INDICATE THAT WIDESPREAD 

AND IN SOME CASES SERIOUS FLASH FLOODING IS ONGOING ACROSS THE 

WARNING AREA.



RUN OFF FROM THE HEAVY RAIN THAT HAS ALREADY FALLEN WILL CONTINUE TO 

PRODUCE FLASH FLOODING. IN ADDITION...ADDITIONAL THUNDERSTORMS 

DEVELOPING OVER NORTHWEST ILLINOIS AND IOWA WILL CONTINUE TO PRODUCE 

MORE LOCALLY HEAVY RAINFALL OVERNIGHT. SOME LOCATIONS MAY SEE UP TO 

AN ADDITIONAL TWO INCHES OR MORE OF RAIN BETWEEN 11 PM AND 3 AM CDT. 

ANY ADDITIONAL HEAVY RAINFALL WILL IMMEDIATELY RUN OFF AND COULD 

LEAD TO POTENTIALLY SIGNIFICANT FLASH FLOODING.



THIS IS A POTENTIALLY DANGEROUS SITUATION. FLASH FLOODING IS ONE OF 

NATURES NUMBER ONE KILLERS...ANYONE TRAVELING ACROSS NORTHERN 

ILLINOIS TONIGHT SHOULD USE EXTREME CAUTION. IF YOU ENCOUNTER A 

FLOODED ROADWAY...TURN AROUND...DONT DROWN



LAT...LON 4130 8714 4120 8734 4118 8753 4103 8753

      4102 8758 4093 8904 4110 8904 4113 8917

      4158 8915 4161 8959 4219 8968 4219 8918

      4215 8917 4215 8776 4178 8757 4163 8740

      4159 8730 4170 8694 4125 8694



$$



RATZER

