BULLETIN – EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SIOUX FALLS SD
1157 PM CDT WED JUL 21 2010

THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A

* FLASH FLOOD WARNING FOR…
DICKINSON COUNTY IN NORTHWEST IOWA
EASTERN LYON COUNTY IN NORTHWEST IOWA
NORTHERN CLAY COUNTY IN NORTHWEST IOWA
O’BRIEN COUNTY IN NORTHWEST IOWA
OSCEOLA COUNTY IN NORTHWEST IOWA

* UNTIL 900 AM CDT THURSDAY

* AT 1152 PM CDT…NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE WARNED AREA. RAINFALL AMOUNT OF 2 TO 5 INCHES ARE LIKELY AS THESE THUNDERSTORMS PASS. DOON IOWA RECEIVED 5 INCHES OF RAIN OVER ABOUT A 2 TO 3 HOUR PERIOD THROUGH 1145 PM CDT.

* RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE…SPIRIT LAKE…ARCHER…ARNOLDS PARK…ASHTON…EVERLY…FOSTORIA…GEORGE…HARRIS…HARTLEY…
LAKE PARK…LITTLE ROCK…MELVIN…MILFORD…OCHEYEDAN…OKOBOJI…ORLEANS…
PRIMGHAR…SANBORN…SHELDON…SIBLEY…SUPERIOR…TERRIL…
WAHPETON AND WEST OKOBOJI.

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. MOST FLOOD RELATED DEATHS OCCUR IN AUTOMOBILES. 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.