

000 

WGUS53 KLOT 200830

FFWLOT

ILC031-037-043-089-093-099-197-201500-



BULLETIN - EAS ACTIVATION REQUESTED

FLASH FLOOD WARNING

NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL

330 AM CDT MON AUG 20 2007



THE NATIONAL WEATHER SERVICE IN CHICAGO HAS ISSUED A



* FLASH FLOOD WARNING FOR THE FOLLOWING COUNTIES IN ILLINOIS...

  COOK...

  DUPAGE...

  KENDALL...

  SOUTHERN KANE...

  NORTHWESTERN WILL...

  SOUTHERN DEKALB...

  NORTHERN LA SALLE...



* UNTIL 1000 AM CDT...



* AT 330 AM CDT...NATIONAL WEATHER SERVICE RADAR DETECTED            

  THUNDERSTORMS DEVELOPING FROM NEAR DOWNTOWN CHICAGO WEST SOUTHWEST 

  TO THE LASALLE PERU AREA. THESE THUNDERSTORMS ARE MOVING EAST      

  NORTHEAST AND WILL MOVE REPEATEDLY OVER THE SAME AREAS LEADING TO  

  VERY HEAVY RAINFALL AMOUNTS. HOURLY RAINFALL RATES OF ONE TO TWO   

  INCHES CAN BE EXPECTED WITH THE MOST INTENSE STORMS. STORM TOTAL   

  RAINFALL AMOUNT FROM EARLY THIS MORNING WILL LIKELY BE IN EXCESS   

  OF 3 INCHES IN SOME LOCATIONS WITHIN THE WARNING AREA. 



* FLASH FLOODING HAS ALREADY BEEN REPORTED IN NORTHERN COOK          

  COUNTY...AND MUCH OF THE WARNING AREA HAS ALREADY SEEN HEAVY       

  RAINFALL DURING THE PAST 24 HOURS. ADDITIONAL HEAVY RAINFALL THIS  

  MORNING WILL RESULT IN RAPID RUNOFF LEADING TO FLASH FLOODING OF   

  LOW LYING AND FLOOD PRONE AREAS. SOME ROADWAYS WILL LIKELY BECOME  

  FLOODED AND IMPASSABLE THIS MORNING IN THE WARNING AREA. 



DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE 

ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS 

SAFELY. FIND AN ALTERNATE ROUTE.



LAT...LON 4130 8916 4142 8859 4152 8825 4178 8757

      4216 8774 4215 8823 4216 8836 4176 8860

      4163 8893 4160 8915



$$



IZZI



000 

WGUS53 KLOT 200830

FFWLOT

ILC031-037-043-089-093-099-197-201500-



BULLETIN - EAS ACTIVATION REQUESTED

FLASH FLOOD WARNING

NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL

330 AM CDT MON AUG 20 2007



THE NATIONAL WEATHER SERVICE IN CHICAGO HAS ISSUED A



* FLASH FLOOD WARNING FOR THE FOLLOWING COUNTIES IN ILLINOIS...

  COOK...

  DUPAGE...

  KENDALL...

  SOUTHERN KANE...

  NORTHWESTERN WILL...

  SOUTHERN DEKALB...

  NORTHERN LA SALLE...



* UNTIL 1000 AM CDT...



* AT 330 AM CDT...NATIONAL WEATHER SERVICE RADAR DETECTED            

  THUNDERSTORMS DEVELOPING FROM NEAR DOWNTOWN CHICAGO WEST SOUTHWEST 

  TO THE LASALLE PERU AREA. THESE THUNDERSTORMS ARE MOVING EAST      

  NORTHEAST AND WILL MOVE REPEATEDLY OVER THE SAME AREAS LEADING TO  

  VERY HEAVY RAINFALL AMOUNTS. HOURLY RAINFALL RATES OF ONE TO TWO   

  INCHES CAN BE EXPECTED WITH THE MOST INTENSE STORMS. STORM TOTAL   

  RAINFALL AMOUNT FROM EARLY THIS MORNING WILL LIKELY BE IN EXCESS   

  OF 3 INCHES IN SOME LOCATIONS WITHIN THE WARNING AREA. 



* FLASH FLOODING HAS ALREADY BEEN REPORTED IN NORTHERN COOK          

  COUNTY...AND MUCH OF THE WARNING AREA HAS ALREADY SEEN HEAVY       

  RAINFALL DURING THE PAST 24 HOURS. ADDITIONAL HEAVY RAINFALL THIS  

  MORNING WILL RESULT IN RAPID RUNOFF LEADING TO FLASH FLOODING OF   

  LOW LYING AND FLOOD PRONE AREAS. SOME ROADWAYS WILL LIKELY BECOME  

  FLOODED AND IMPASSABLE THIS MORNING IN THE WARNING AREA. 



DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE 

ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS 

SAFELY. FIND AN ALTERNATE ROUTE.



LAT...LON 4130 8916 4142 8859 4152 8825 4178 8757

      4216 8774 4215 8823 4216 8836 4176 8860

      4163 8893 4160 8915



$$



IZZI

