BULLETIN – EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SIOUX FALLS SD
436 AM CDT FRI JUN 11 2010

THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A

* FLASH FLOOD WARNING FOR…
DICKINSON COUNTY IN NORTHWEST IOWA
NORTHERN CLAY COUNTY IN NORTHWEST IOWA

* UNTIL 730 AM CDT

* AT 431 AM CDT…NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE WARNED AREA. RAINFALL FROM 1 TO 2 INCHES…MUCH OF IT WITHIN A HALF HOUR TO HOUR TIMEFRAME WILL RESULT IN FLASH FLOODING…ESPECIALLY IN URBAN AREAS.

* RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE…SPENCER…SPIRIT LAKE…ARNOLDS PARK…FOSTORIA…MILFORD…OKOBOJI…ORLEANS…ROYAL…SUPERIOR…TERRIL…WAHPETON AND WEST OKOBOJI.

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.