

475 

RWUS32 KDSM 020914

FFSDSM

IAZ033-034-021200-



FLASH FLOOD STATEMENT

NATIONAL WEATHER SERVICE DES MOINES IA

415 AM CDT WED MAY 2 2001



...FLASH FLOOD WARNING EXTENDED UNTIL 7 AM...



WARNING INFORMATION-- A FLASH FLOOD WARNING HAS BEEN EXTENDED UNTIL 

7 AM CDT FOR SAC AND CALHOUN COUNTIES. SOME CITIES IN THE WARNING 

INCLUDE...SAC CITY...LAKE VIEW...WALL LAKE...AUBURN...YETTER... 

LYTTON...ROCKWELL CITY...JOLLEY...AND LAKE CITY. 



RECENT REPORTS-- THE CALHOUN COUNTY SHERIFF DEPARTMENT INDICATED 

4.5 INCHES OF RAINFALL IN ROCKWELL CITY IN THE PAST 5 HOURS. IN SAC 

COUNTY A REPORT OF 6 TO 7 INCHES OR RAIN WAS RECEIVED FROM LAKE 

VIEW. 



FORECAST RAINFALL-- THUNDERSTORM INTENSITY HAS BEEN DECREASING AND 

THIS TREND IS EXPECTED TO CONTINUE THROUGH THE EARLY MORNING HOURS. 

LIGHT TO MODERATE RAIN WITH EMBEDDED THUNDERSTORMS ARE EXPECTED TO 

CONTINUE THROUGH 6 OR 7 AM BEFORE ENDING. AN ADDITIONAL INCH OF RAIN 

MAY OCCUR IN SOME AREAS THROUGH THIS TIME WITH MOST AREAS AVERAGING 

AN ADDITIONAL QUARTER TO HALF INCH. RAINFALL TOTALS FROM SOUTHEAST 

SAC COUNTY INTO NORTHWEST CALHOUN COUNTY WILL BE IN THE RANGE OF 5 

TO 8 INCHES. 



ALTHOUGH THE HEAVIEST RAINFALL HAS DIMINISHED...RUNOFF OF THE 

ALREADY FALLEN RAIN COULD CONTINUE FOR THE NEXT SEVERAL HOURS. 

BEWARE THAT STREAMS...CREEKS...AND LOW LYING AREAS MAY CONTINUE TO 

EXPERIENCE RISING WATER EVEN THOUGH THE RAIN HAS DIMINISHED. SOME 

ROADS MAY REMAIN IMPASSABLE THROUGH AT LEAST SUNRISE.



PRECAUTIONS-- BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO 

RECOGNIZE THE DANGERS OF FLOODS AND FLASH FLOODS. DO NOT DRIVE INTO 

WATER OF UNKNOWN DEPTH...THE ROAD MAY BE WASHED OUT.



LAT...LON 4254 9538 4222 9529 4223 9442 4254 9447



$$



JAW

