Flash Flood Warning 3, NWS Sioux Falls, SD

Issued

May 26, 2013, 1:26 AM CDT (06:26 UTC)

Expired

May 26, 2013, 7:30 AM CDT

In force

6 hr

Issued by

NWS Sioux Falls, SD

Area

Storm-based polygon

Flood severity

None

Counties Lyon County, IA, Lincoln County, SD, Minnehaha County, SD

The Sioux Falls radar (KFSD), 15 km from the middle of the area, began a volume at 06:28 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

545 
WGUS53 KFSD 260626
FFWFSD
IAC119-SDC083-099-261230-
/O.NEW.KFSD.FF.W.0003.130526T0626Z-130526T1230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SIOUX FALLS SD
126 AM CDT SUN MAY 26 2013

THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  NORTHERN LINCOLN COUNTY IN SOUTHEAST SOUTH DAKOTA
  SOUTHERN MINNEHAHA COUNTY IN SOUTHEAST SOUTH DAKOTA
  WESTERN LYON COUNTY IN NORTHWEST IOWA

* UNTIL 730 AM CDT

* AT 119 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE WARNED AREA. A
  TRAINED SPOTTER REPORTS RAINFALL OF 4.69 INCHES SO FAR IN WESTERN
  SIOUX FALLS. DOPPLER RADAR ESTIMATES WIDESPREAD 3 TO 5 INCHES OVER
  THE WARNED AREA...WITH LOCALLY HIGHER AMOUNTS POSSIBLE. ADDITIONAL
  RAINFALL IS EXPECTED TO MOVE ACROSS THE AREA THROUGH THE EARLY
  MORNING HOURS.

* RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
  OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...SIOUX
  FALLS...ALVORD...HARRISBURG...LARCHWOOD...LENNOX...LESTER...TEA AND
  WORTHING.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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.

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.

&&

LAT...LON 4362 9662 4350 9662 4350 9623 4329 9623
      4334 9692 4362 9692

$$

JH

608 
WGUS73 KFSD 261122
FFSFSD

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
622 AM CDT SUN MAY 26 2013

IAC119-SDC083-099-261137-
/O.CAN.KFSD.FF.W.0003.000000T0000Z-130526T1230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
LYON IA-MINNEHAHA SD-LINCOLN SD-
622 AM CDT SUN MAY 26 2013

...THE FLASH FLOOD WARNING THAT WAS IN EFFECT FOR NORTHERN LINCOLN...
SOUTHERN MINNEHAHA AND WESTERN LYON COUNTIES IS CANCELLED...

EXCESS RUNOFF FROM HEAVY RAIN HAS ENDED OVER THE WARNED AREA. STREAMS
AND CREEKS IN THE WARNED AREA HAVE RECEDED OR WERE BEGINNING TO
RECEDE...ENDING THE FLOOD THREAT. IF FLOODING HAS BEEN OBSERVED...
PLEASE REPORT IT TO YOUR LOCAL LAW ENFORCEMENT AGENCY.

LAT...LON 4362 9662 4350 9662 4350 9623 4329 9623
      4334 9692 4362 9692

$$

CHAPMAN

Flash Flood Warnings in South Dakota, 2013Flash Flood Warnings in Iowa, 2013Every flash flood warning in 2013

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.