BULLETIN – EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE DES MOINES IA
837 PM CDT THU JUN 9 2011

THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A

* FLASH FLOOD WARNING FOR…
EASTERN DALLAS COUNTY IN CENTRAL IOWA…
NORTHEASTERN MADISON COUNTY IN SOUTH CENTRAL IOWA…
NORTHERN WARREN COUNTY IN SOUTH CENTRAL IOWA…
POLK COUNTY IN CENTRAL IOWA…

* UNTIL 230 AM CDT

* AT 837 PM CDT…NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED SLOW MOVING THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE WARNED AREA. AN INCH OF RAIN HAS FALLEN IN THE PAST 30 MINUTES…AND MORE RAIN IS EXPECTED.

* RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE…DES MOINES…ALTOONA…ANKENY…BONDURANT…CARLISLE…CLIVE…GRIMES…JOHNSTON…NORWALK…PLEASANT HILL…POLK CITY…URBANDALE…WAUKEE…WEST DES MOINES AND WINDSOR HEIGHTS.

PRECAUTIONARY/PREPAREDNESS ACTIONS…

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL CREEKS AND STREAMS…URBAN AREAS…HIGHWAYS…STREETS AND UNDERPASSES AS WELL AS OTHER DRAINAGE AREAS AND LOW LYING SPOTS. THIS IS ESPECIALLY TRUE FOR THE DES MOINES METRO AREA.

FLOODING IS OCCURRING OR IS IMMINENT. MOST FLOOD RELATED DEATHS OCCUR IN VEHICLES. DO NOT ATTEMPT TO CROSS WATER COVERED BRIDGES…DIPS…OR LOW WATER CROSSINGS. NEVER TRY TO CROSS A FLOWING STREAM… EVEN A SMALL ONE…ON FOOT OR IN A VEHICLE.