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000

WGUS73 KBIS 220617

FFSBIS



FLASH FLOOD STATEMENT

NATIONAL WEATHER SERVICE BISMARCK ND

117 AM CDT FRI AUG 22 2008



NDC083-103-220730-

/O.CON.KBIS.FF.W.0008.000000T0000Z-080822T0730Z/

/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

SHERIDAN ND-WELLS ND-

117 AM CDT FRI AUG 22 2008



...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 230 AM CDT FOR

NORTHERN WELLS AND NORTHEASTERN SHERIDAN COUNTIES...



AT 106 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 

INDICATE THUNDERSTORMS PRODUCING FLASH FLOODING OVER THE WARNED 

AREA. THESE STORMS WERE LOCATED FROM BREMEN TO HARVEY TO 5 MILES 

NORTH OF MCCLUSKY...MOVING NORTHEAST AT 40 MPH. THESE THUNDERSTORMS 

ARE CAPABLE OF PRODUCING RAINFALL RATES OF UP TO TWO INCHES OF RAIN 

PER HOUR AND WERE MOVING OVER ALREADY SATURATED SOILS FROM PREVIOUS 

STORMS ON THURSDAY EVENING...WITH RADAR ESTIMATES OF AROUND 3 INCHES 

OF RAIN HAVING ALREADY FALLEN ACROSS NORTHERN SHERIDAN AND WELLS 

COUNTIES. AN ADDITIONAL ONE INCH OF RAINFALL IS EXPECTED OVER WELLS 

AND SHERIDAN COUNTIES AS A RESULT OF THESE STORMS THROUGH 200 AM 

CDT. THIS WILL CAUSE ADDITIONAL STREET FLOODING...RISES ON SMALL 

CREEKS AND STREAMS...PONDING OF WATER IN LOW LYING AREAS AND ROADS 

AND POSSIBLE WASHING OUT OF DIRT ROADS. ADDITIONAL THUNDERSTORMS 

ACROSS WESTERN NORTH DAKOTA WILL BRING ADDITIONAL RAINFALL TO WELLS 

AND SHERIDAN COUNTIES THROUGH THE NIGHT.



LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO WELLSBURG...

MARTIN...HEIMDAL AND HARVEY



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.



BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE

DANGERS OF FLOODING. IF FLASH FLOODING IS OBSERVED ACT QUICKLY. MOVE

UP TO HIGHER GROUND TO ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS

SUBJECT TO FLOODING WHEN WATER BEGINS RISING.



MOST FLOOD DEATHS OCCUR IN AUTOMOBILES. NEVER DRIVE YOUR VEHICLE INTO

AREAS WHERE THE WATER COVERS THE ROADWAY. FLOOD WATERS ARE USUALLY

DEEPER THAN THEY APPEAR. JUST ONE FOOT OF FLOWING WATER IS POWERFUL

ENOUGH TO SWEEP VEHICLES OFF THE ROAD. WHEN ENCOUNTERING FLOODED

ROADS MAKE THE SMART CHOICE...TURN AROUND...DONT DROWN.



LAT...LON 4765 10034 4785 10015 4785 9982 4786 9981

      4786 9929 4785 9928 4769 9929 4766 9926

      4761 9926



$$



PJA

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