

000 

RWUS32 KFSD 290650

FFSFSD

IAZ031-290730-



FLASH FLOOD STATEMENT

NATIONAL WEATHER SERVICE SIOUX FALLS SD

141 AM CDT WED MAY 29 2002



...FLASH FLOOD WARNING CONTINUES UNTIL 230 AM CDT FOR...



...WOODBURY COUNTY IN NORTHWEST IOWA...



AT 145 AM CDT...NATIONAL WEATHER SERVICE RADAR SHOWED SLOW MOVING 

THUNDERSTORMS EXTENDING ACROSS WESTERN PLYMOUTH COUNTY INTO THE 

SIOUX CITY METROPOLITAN AREA.  A RAINFALL REPORT FROM INDIAN HILLS 

IN SIOUX CITY INDICATED OVER 5 INCHES OF RAIN HAD FALLEN.  HEAVY 

RAIN WITH THUNDERSTORMS CONTINUE IN SIOUX CITY...MAINLY NORTH OF 

HIGHWAY 20.  THE STORMS CONTINUE TO MOVE TO THE EAST...BUT AT AROUND 

10 MPH.  THIS WILL KEEP HEAVY RAIN IN THE SIOUX CITY AREA THROUGH 2 

AM WITH ANOTHER QUARTER TO HALF INCH POSSIBLE.



EMERGENCY MANAGEMENT REPORTS THAT STREETS ARE LOW LYING STREETS ARE 

FLOODED WITH OVER 3 FEET OF WATER ON A FEW STREETS IN SIOUX CITY.  

WITH HEAVY RAIN CONTINUING...STREET FLOODING WILL CONTINUE FOR THE 

NEXT HOUR.



IN ADDITION...HEAVY RAIN HAS FALLEN IN THE PERRY CREEK BASIN ACROSS 

SOUTHWESTERN PLYMOUTH COUNTY.  WHILE PERRY CREEK REMAINS BELOW FLOOD 

STAGE AT THIS TIME...PERSONS IN THE PERRY CREEK BASIN WILL WANT TO 

KEEP UPDATED ON LATER STATEMENTS SHOULD THE WATER RAPIDLY RISE OVER 

THE NEXT COUPLE HOURS.



DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE

ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS

SAFELY. VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED QUICKLY.

MOVE TO HIGHER GROUND.



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

DANGERS OF FLOODS AND FLASH FLOODS. 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.



EXCESSIVE RUNOFF FROM THIS STORM WILL CAUSE FLASH FLOODING OF SMALL

CREEKS AND STREAMS...HIGHWAYS AND UNDERPASSES. ADDITIONALLY...COUNTRY

ROADS AND FARMLANDS ALONG THE BANKS OF CREEKS AND STREAMS AND OTHER

LOW LYING AREAS ARE SUBJECT TO FLASH FLOODING.



000 

RWUS32 KFSD 290659 CCA

FFSFSD

IAZ031-290730-



FLASH FLOOD STATEMENT...CORRECTED TYPO IN SECOND PARAGRAPH...

NATIONAL WEATHER SERVICE SIOUX FALLS SD

141 AM CDT WED MAY 29 2002



...FLASH FLOOD WARNING CONTINUES UNTIL 230 AM CDT FOR...



...WOODBURY COUNTY IN NORTHWEST IOWA...



AT 145 AM CDT...NATIONAL WEATHER SERVICE RADAR SHOWED SLOW MOVING 

THUNDERSTORMS EXTENDING ACROSS WESTERN PLYMOUTH COUNTY INTO THE 

SIOUX CITY METROPOLITAN AREA.  A RAINFALL REPORT FROM INDIAN HILLS 

IN SIOUX CITY INDICATED OVER 5 INCHES OF RAIN HAD FALLEN.  HEAVY 

RAIN WITH THUNDERSTORMS CONTINUES IN SIOUX CITY...MAINLY NORTH OF 

HIGHWAY 20.  THE STORMS CONTINUE TO MOVE TO THE EAST...BUT AT AROUND 

10 MPH.  THIS WILL KEEP HEAVY RAIN IN THE SIOUX CITY AREA THROUGH 2 

AM WITH ANOTHER QUARTER TO HALF INCH POSSIBLE.



EMERGENCY MANAGEMENT REPORTS THAT LOW LYING STREETS ARE FLOODED WITH 

OVER 3 FEET OF WATER ON A FEW STREETS IN SIOUX CITY.  WITH HEAVY 

RAIN CONTINUING...STREET FLOODING WILL CONTINUE FOR THE NEXT HOUR.



IN ADDITION...HEAVY RAIN HAS FALLEN IN THE PERRY CREEK BASIN ACROSS 

SOUTHWESTERN PLYMOUTH COUNTY.  WHILE PERRY CREEK REMAINS BELOW FLOOD 

STAGE AT THIS TIME...PERSONS IN THE PERRY CREEK BASIN WILL WANT TO 

KEEP UPDATED ON LATER STATEMENTS SHOULD THE WATER RAPIDLY RISE OVER 

THE NEXT COUPLE HOURS.



DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE

ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS

SAFELY. VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED QUICKLY.

MOVE TO HIGHER GROUND.



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

DANGERS OF FLOODS AND FLASH FLOODS. 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.



EXCESSIVE RUNOFF FROM THIS STORM WILL CAUSE FLASH FLOODING OF SMALL

CREEKS AND STREAMS...HIGHWAYS AND UNDERPASSES. ADDITIONALLY...COUNTRY

ROADS AND FARMLANDS ALONG THE BANKS OF CREEKS AND STREAMS AND OTHER

LOW LYING AREAS ARE SUBJECT TO FLASH FLOODING.



565 

RWUS32 KFSD 290650

FFSFSD

IAZ031-290730-



FLASH FLOOD STATEMENT

NATIONAL WEATHER SERVICE SIOUX FALLS SD

141 AM CDT WED MAY 29 2002



...FLASH FLOOD WARNING CONTINUES UNTIL 230 AM CDT FOR...



...WOODBURY COUNTY IN NORTHWEST IOWA...



AT 145 AM CDT...NATIONAL WEATHER SERVICE RADAR SHOWED SLOW MOVING 

THUNDERSTORMS EXTENDING ACROSS WESTERN PLYMOUTH COUNTY INTO THE 

SIOUX CITY METROPOLITAN AREA.  A RAINFALL REPORT FROM INDIAN HILLS 

IN SIOUX CITY INDICATED OVER 5 INCHES OF RAIN HAD FALLEN.  HEAVY 

RAIN WITH THUNDERSTORMS CONTINUE IN SIOUX CITY...MAINLY NORTH OF 

HIGHWAY 20.  THE STORMS CONTINUE TO MOVE TO THE EAST...BUT AT AROUND 

10 MPH.  THIS WILL KEEP HEAVY RAIN IN THE SIOUX CITY AREA THROUGH 2 

AM WITH ANOTHER QUARTER TO HALF INCH POSSIBLE.



EMERGENCY MANAGEMENT REPORTS THAT STREETS ARE LOW LYING STREETS ARE 

FLOODED WITH OVER 3 FEET OF WATER ON A FEW STREETS IN SIOUX CITY.  

WITH HEAVY RAIN CONTINUING...STREET FLOODING WILL CONTINUE FOR THE 

NEXT HOUR.



IN ADDITION...HEAVY RAIN HAS FALLEN IN THE PERRY CREEK BASIN ACROSS 

SOUTHWESTERN PLYMOUTH COUNTY.  WHILE PERRY CREEK REMAINS BELOW FLOOD 

STAGE AT THIS TIME...PERSONS IN THE PERRY CREEK BASIN WILL WANT TO 

KEEP UPDATED ON LATER STATEMENTS SHOULD THE WATER RAPIDLY RISE OVER 

THE NEXT COUPLE HOURS.



DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE

ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS

SAFELY. VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED QUICKLY.

MOVE TO HIGHER GROUND.



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

DANGERS OF FLOODS AND FLASH FLOODS. 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.



EXCESSIVE RUNOFF FROM THIS STORM WILL CAUSE FLASH FLOODING OF SMALL

CREEKS AND STREAMS...HIGHWAYS AND UNDERPASSES. ADDITIONALLY...COUNTRY

ROADS AND FARMLANDS ALONG THE BANKS OF CREEKS AND STREAMS AND OTHER

LOW LYING AREAS ARE SUBJECT TO FLASH FLOODING.



394 

RWUS32 KFSD 290659 CCA

FFSFSD

IAZ031-290730-



FLASH FLOOD STATEMENT...CORRECTED TYPO IN SECOND PARAGRAPH...

NATIONAL WEATHER SERVICE SIOUX FALLS SD

141 AM CDT WED MAY 29 2002



...FLASH FLOOD WARNING CONTINUES UNTIL 230 AM CDT FOR...



...WOODBURY COUNTY IN NORTHWEST IOWA...



AT 145 AM CDT...NATIONAL WEATHER SERVICE RADAR SHOWED SLOW MOVING 

THUNDERSTORMS EXTENDING ACROSS WESTERN PLYMOUTH COUNTY INTO THE 

SIOUX CITY METROPOLITAN AREA.  A RAINFALL REPORT FROM INDIAN HILLS 

IN SIOUX CITY INDICATED OVER 5 INCHES OF RAIN HAD FALLEN.  HEAVY 

RAIN WITH THUNDERSTORMS CONTINUES IN SIOUX CITY...MAINLY NORTH OF 

HIGHWAY 20.  THE STORMS CONTINUE TO MOVE TO THE EAST...BUT AT AROUND 

10 MPH.  THIS WILL KEEP HEAVY RAIN IN THE SIOUX CITY AREA THROUGH 2 

AM WITH ANOTHER QUARTER TO HALF INCH POSSIBLE.



EMERGENCY MANAGEMENT REPORTS THAT LOW LYING STREETS ARE FLOODED WITH 

OVER 3 FEET OF WATER ON A FEW STREETS IN SIOUX CITY.  WITH HEAVY 

RAIN CONTINUING...STREET FLOODING WILL CONTINUE FOR THE NEXT HOUR.



IN ADDITION...HEAVY RAIN HAS FALLEN IN THE PERRY CREEK BASIN ACROSS 

SOUTHWESTERN PLYMOUTH COUNTY.  WHILE PERRY CREEK REMAINS BELOW FLOOD 

STAGE AT THIS TIME...PERSONS IN THE PERRY CREEK BASIN WILL WANT TO 

KEEP UPDATED ON LATER STATEMENTS SHOULD THE WATER RAPIDLY RISE OVER 

THE NEXT COUPLE HOURS.



DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE

ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS

SAFELY. VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED QUICKLY.

MOVE TO HIGHER GROUND.



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

DANGERS OF FLOODS AND FLASH FLOODS. 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.



EXCESSIVE RUNOFF FROM THIS STORM WILL CAUSE FLASH FLOODING OF SMALL

CREEKS AND STREAMS...HIGHWAYS AND UNDERPASSES. ADDITIONALLY...COUNTRY

ROADS AND FARMLANDS ALONG THE BANKS OF CREEKS AND STREAMS AND OTHER

LOW LYING AREAS ARE SUBJECT TO FLASH FLOODING.

