BULLETIN – EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE DES MOINES IA
854 PM CDT WED MAY 12 2010

THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A

* FLASH FLOOD WARNING FOR…
BLACK HAWK COUNTY IN NORTHEAST IOWA…
BREMER COUNTY IN NORTHEAST IOWA…
BUTLER COUNTY IN NORTH CENTRAL IOWA…
NORTHEASTERN GRUNDY COUNTY IN CENTRAL IOWA…

* UNTIL 300 AM CDT THURSDAY

* AT 851 PM CDT…NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED AN AREA OF THUNDERSTORMS WITH HEAVY RAINFALL ACROSS THE WARNED AREA. NEARLY TWO INCHES OF RAIN HAS ALREADY FALLEN ACROSS THE AREA IN THE PAST 6 HOURS…WITH ADDITIONAL HEAVY RAINFALL EXPECTED.

* RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE…WATERLOO…ALLISON…APLINGTON…CEDAR FALLS…CLARKSVILLE…DENVER…EVANSDALE…GREENE…GRUNDY CENTER…HUDSON…LA PORTE CITY…PARKERSBURG…REINBECK…SHELL ROCK…SUMNER…TRIPOLI AND WAVERLY.

PRECAUTIONARY/PREPAREDNESS ACTIONS…

ADDITIONAL RAINFALL AMOUNTS OF ONE HALF TO ONE INCH ARE POSSIBLE IN THE WARNED AREA THROUGH LATE EVENING.

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.

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL CREEKS AND STREAMS…COUNTRY ROADS…AS WELL AS FARMLAND ALONG THE BANKS OF CREEKS AND STREAMS. FLOODING CAN BE EXPECTED ALONG AND NEAR THE CRANE CREEK AND BUCK CREEK IN NORTHEASTERN BREMER COUNTY.