BULLETIN – EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SIOUX FALLS SD
207 AM CDT MON AUG 3 2009

THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A

* FLASH FLOOD WARNING FOR…
NORTHEASTERN WOODBURY COUNTY IN NORTHWEST IOWA
NORTHERN IDA COUNTY IN NORTHWEST IOWA
SOUTHEASTERN PLYMOUTH COUNTY IN NORTHWEST IOWA
SOUTHERN CHEROKEE COUNTY IN NORTHWEST IOWA

* UNTIL 500 AM CDT

* AT 202 AM CDT…NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE WARNED AREA. DOPPLER RADAR ESTIMATES OF RAINFALL RATES FROM 2 TO 3 INCHES PER HOUR HAVE BEEN TRAINING ALONG AREAS NEAR HIGHWAY 20 FROM NORTHEASTERN WOODBURY THROUGH NORTHERN IDA COUNTIES DURING THE PAST ONE TO TWO HOURS.

* RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE…IDA GROVE, ARTHUR, CORRECTIONVILLE, CUSHING, GALVA, HOLSTEIN, KINGSLEY, PIERSON AND WASHTA.

THIS INCLUDES ASHTON CREEK…BITTER CREEK…SILVER CREEK…AND PIERSON CREEKS ARE ESPECIALLY THREATENED FOR FLASH FLOODING.

PRECAUTIONARY/PREPAREDNESS ACTIONS…

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

FLOODING IS OCCURRING OR IS IMMINENT. IT IS IMPORTANT TO KNOW WHERE YOU ARE RELATIVE TO STREAMS…RIVERS…OR CREEKS WHICH CAN BECOME KILLERS IN HEAVY RAINS. CAMPERS AND HIKERS SHOULD AVOID STREAMS OR CREEKS.