
178 
WGUS73 KDMX 110538
FFSDMX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
1238 AM CDT WED AUG 11 2010

IAC049-099-153-157-110930-
/O.CON.KDMX.FF.W.0087.000000T0000Z-100811T0930Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
JASPER IA-POLK IA-POWESHIEK IA-DALLAS IA-
1238 AM CDT WED AUG 11 2010

...FLASH FLOOD WARNING REMAINS IN EFFECT FOR EASTERN DALLAS...
POWESHIEK...POLK AND JASPER COUNTIES UNTIL 430 AM CDT...

AT 1234 AM CDT...A FLASH FLOOD EMERGENCY IS IN PROGRESS ACROSS THE 
METRO AREA. LOCAL LAW ENFORCEMENT OFFICIALS REPORTED DEEP WATER 
FLOWING ACROSS INTERSTATE 35 NEAR MILE MARKER 97 NORTH OF 
ANKENY...WITH CARS STALLED AND SPUN OUT ON THE INTERSTATE. 
THUNDERSTORMS WITH EXTREMELY HEAVY RAINFALL WILL CONTINUE 
ACROSS THE AREA AND PRODUCE ADDITIONAL RAINFALL AMOUNTS
UP TO 2 INCHES. MAJOR FLASH FLOODING IS LIKELY OR GOING TO CONTINUE 
THROUGHOUT THE METRO AREA OF DES MOINES. 

STRONG WINDS ARE EXPECTED AS WELL ACROSS THE AREA WHICH COULD LEAD 
TO POWER OUTAGES ALLOWING FOR SUMP PUMP FAILURES AND FLOODING OF 
BASEMENTS THROUGHOUT THE METRO AREA. 

AT 1215 AM CDT...POLK COUNTY LAW ENFORCEMENT REPORTED IMPASSABLE 
DEEP WATER OVER THE ROAD AT 1ST AVENUE AND STATE STREET IN 
ANKENY...AND AT THE 200 BLOCK OF NORTHEAST GRANT IN ANKENY. THE 
INTERSECTION OF SOUTHEAST 4TH AND NORTHEAST TRILEIN WAS IMPASSABLE 
DUE TO WATER AT LEAST 18 INCHES DEEP. IN ADDITION...WATER WAS UP TO 
THE BOTTOM OF CARS AT THE INTERSECTION OF NORTHEAST 9TH STREET AND 
ANKENY BOULEVARD. SEVERAL CARS WERE REPORTED STALLED OUT AT ALL 
THESE AFOREMENTIONED LOCATIONS. 

SOME LOCATIONS THAT WILL EXPERIENCE FLASH  FLOODING INCLUDE...DES
MOINES...ALTOONA...ANKENY...BONDURANT...BROOKLYN...CLIVE...COLFAX...
DALLAS CENTER...GRIMES...GRINNELL...JOHNSTON...MONROE...MONTEZUMA...
NEWTON...PERRY...PLEASANT HILL...POLK CITY...PRAIRIE CITY...
URBANDALE...WAUKEE...WEST DES MOINES...WINDSOR HEIGHTS AND WOODWARD.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE MINOR FLOODING OF
SMALL CREEKS AND STREAMS...URBAN AREAS...HIGHWAYS...STREETS AND
UNDERPASSES AS WELL AS OTHER DRAINAGE AREAS AND LOW LYING SPOTS.

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING. IF FLOODING IS OBSERVED...ACT QUICKLY. DO NOT
ENTER THE WATER. TURN AROUND AND MOVE UP TO HIGHER GROUND. DO NOT
STAY IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING.

&&

LAT...LON 4151 9379 4167 9414 4186 9412 4186 9230
      4151 9229

$$