Alert archive / Arkansas / Flash Flood Warnings in 2011

Flash Flood Warning 21, NWS Little Rock, AR

April 25, 201110 counties in Arkansas

NWS Little Rock, AR issued this flash flood warning at Apr 25, 2011, 8:10 AM CDT for 10 counties in Arkansas. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Apr 25, 2011, 8:10 AM CDT (13:10 UTC)
Expired: Apr 25, 2011, 11:00 AM CDT
In force: 3 hr
Issued by: NWS Little Rock, AR
Area: Storm-based polygon
Flood severity: None

Counties Baxter County, AR, Johnson County, AR, Logan County, AR, Marion County, AR, Newton County, AR, Pope County, AR, Searcy County, AR, Stone County, AR, Van Buren County, AR, Yell County, AR

The radar

The Western Arkansas radar (KSRX), 89 km from the middle of the area, began a volume at 13:12 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.

The nearest sounding before it

Springfield, MO (KSGF), launched 12:00Z, 1.2 hours before the alert went out and 143 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 3 J/kg
Mixed-layer CIN: -261 J/kg
Mixed-layer LCL: 677 m above ground
0-6 km bulk shear: 57 kt
0-1 km storm-relative helicity: 420 m²/s²
0-3 km storm-relative helicity: 356 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

223 
WGUS54 KLZK 251310
FFWLZK
ARC005-071-083-089-101-115-129-137-141-149-251600-
/O.NEW.KLZK.FF.W.0021.110425T1310Z-110425T1600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LITTLE ROCK AR
810 AM CDT MON APR 25 2011

THE NATIONAL WEATHER SERVICE IN LITTLE ROCK HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  JOHNSON COUNTY IN WESTERN ARKANSAS...
  LOGAN COUNTY IN WESTERN ARKANSAS...
  NEWTON COUNTY IN NORTH CENTRAL ARKANSAS...
  NORTHERN POPE COUNTY IN CENTRAL ARKANSAS...
  NORTHWESTERN STONE COUNTY IN NORTH CENTRAL ARKANSAS...
  NORTHWESTERN VAN BUREN COUNTY IN NORTH CENTRAL ARKANSAS...
  NORTHWESTERN YELL COUNTY IN CENTRAL ARKANSAS...
  SEARCY COUNTY IN NORTH CENTRAL ARKANSAS...
  SOUTH CENTRAL BAXTER COUNTY IN NORTH CENTRAL ARKANSAS...
  SOUTHEASTERN MARION COUNTY IN NORTH CENTRAL ARKANSAS...

* UNTIL 1100 AM CDT

* AT 806 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR 
  INDICATED RAIN CONTINUING OVER THE WARNED AREA. 
  DOPPLER RADAR INDICATES 2 TO 3 INCHES OF RAIN HAVE
  ALREADY FALLEN OVER PARTS OF THE WARNED AREA WITH ADDITIONAL 
  HEAVY RAIN EXPECTED. WHILE PRECIPITATION MAY TAPER OFF IN SOME 
  AREAS DURING THE WARNING PERIOD...IT WILL TAKE SOME TIME FOR 
  ANY HIGH WATER TO RUNOFF.  


* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  SAND GAP...           MARSHALL...           LOST VALLEY SP...
  CLARKSVILLE...        ZACK...               WOOLUM...
  WOODLAND...           WITTS SPRING...       WESTERN GROVE...
  WATTS...              WALNUT...            
  UPPER BUFFALO WILDERNESS AREA...            TOKALON...
  THOLA...              TARAL...              SUBIACO...
  SPADRA...             SOLO...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...HIGHWAYS AND UNDERPASSES. ADDITIONALLY...
COUNTRY ROADS AND FARMLANDS ALONG THE BANKS OF CREEKS...STREAMS AND
OTHER LOW LYING AREAS ARE SUBJECT TO FLOODING.

&&

LAT...LON 3609 9219 3561 9257 3505 9375 3521 9399
      3524 9398 3524 9392 3533 9391 3532 9381
      3540 9380 3539 9371 3569 9370 3578 9365
      3578 9352 3588 9353 3595 9350 3597 9345
      3609 9346 3613 9343

$$

61

The office that day

Everything else NWS Little Rock, AR issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 24, 7:01 PM CDT	Severe Thunderstorm Warning	LZK	Johnson, Logan, Pope, Scott, Yell	59 min
Apr 24, 7:18 PM CDT	Flash Flood Warning	LZK	Baxter, Boone, Fulton, Izard, Johnson, Marion and 5 more	6 hr
Apr 24, 7:18 PM CDT	Severe Thunderstorm Warning	LZK	Boone, Johnson, Marion, Newton, Pope, Searcy	42 min
Apr 24, 7:36 PM CDT	Tornado Warning	LZK	Logan, Scott	39 min
Apr 24, 7:48 PM CDT	Special Weather Statement	LZK	Baxter	47 min
Apr 24, 7:56 PM CDT	Severe Thunderstorm Warning	LZK	Johnson, Logan, Scott, Yell	49 min
Apr 24, 8:05 PM CDT	Severe Thunderstorm Warning	LZK	Johnson, Newton, Pope, Searcy	40 min
Apr 24, 8:14 PM CDT	Tornado Warning	LZK	Logan, Scott, Yell	46 min
Apr 24, 8:26 PM CDT	Special Weather Statement	LZK	Stone	44 min
Apr 24, 8:32 PM CDT	Special Weather Statement	LZK	Sharp	33 min
Apr 24, 8:42 PM CDT	Flash Flood Warning	LZK	Cleburne, Fulton, Independence, Izard, Pope, Searcy and 3 more	3 hr
Apr 24, 8:44 PM CDT	Severe Thunderstorm Warning	LZK	Johnson, Logan, Pope, Scott, Yell	61 min
Apr 24, 8:55 PM CDT	Tornado Warning	LZK	Logan, Pope, Yell	35 min
Apr 24, 9:09 PM CDT	Special Weather Statement	LZK	Sebastian	46 min
Apr 24, 9:25 PM CDT	River Flood Warning	LZK	Franklin, Johnson, Logan	4 days
Apr 24, 9:28 PM CDT	Tornado Warning	LZK	Conway, Pope, Yell	20 min
Apr 24, 9:47 PM CDT	Severe Thunderstorm Warning	LZK	Conway, Pope, Van Buren	43 min
Apr 24, 9:55 PM CDT	Flash Flood Warning	LZK	Conway, Johnson, Logan, Pope, Scott, Van Buren and 1 more	3 hr
Apr 24, 9:59 PM CDT	Special Weather Statement	LZK	Montgomery, Yell	46 min
Apr 24, 10:07 PM CDT	Severe Thunderstorm Warning	LZK	Logan, Scott, Yell	38 min
Apr 24, 10:18 PM CDT	Tornado Warning	LZK	Yell	34 min
Apr 24, 10:24 PM CDT	Severe Thunderstorm Warning	LZK	Montgomery, Pike, Polk	51 min
Apr 24, 10:25 PM CDT	Severe Thunderstorm Warning	LZK	Cleburne, Conway, Stone, Van Buren	50 min
Apr 24, 10:42 PM CDT	Severe Thunderstorm Warning	LZK	Johnson, Logan, Perry, Pope, Yell	48 min
Apr 24, 10:46 PM CDT	Severe Thunderstorm Warning	LZK	Logan, Scott, Yell	39 min
Apr 24, 11:03 PM CDT	Severe Thunderstorm Warning	LZK	Clark, Garland, Hot Spring, Montgomery, Pike, Scott and 1 more	42 min
Apr 24, 11:06 PM CDT	Severe Thunderstorm Warning	LZK	Conway, Perry, Pope, Yell	39 min
Apr 24, 11:36 PM CDT	Severe Thunderstorm Warning	LZK	Garland, Hot Spring, Perry, Saline	39 min
Apr 24, 11:39 PM CDT	Severe Thunderstorm Warning	LZK	Conway, Faulkner, Perry, Van Buren	51 min
Apr 25, 12:18 AM CDT	Special Weather Statement	LZK	Pulaski, Saline	47 min
Apr 25, 12:35 AM CDT	Special Weather Statement	LZK	White	45 min
Apr 25, 1:05 AM CDT	Special Weather Statement	LZK	Lonoke, Prairie, Pulaski	45 min
Apr 25, 1:09 AM CDT	Severe Thunderstorm Warning	LZK	Lonoke, Pulaski	51 min
Apr 25, 1:21 AM CDT	Flash Flood Warning	LZK	Logan, Scott, Yell	3 hr
Apr 25, 1:36 AM CDT	Flash Flood Warning	LZK	Baxter, Boone, Fulton, Johnson, Marion, Newton and 1 more	3 hr
Apr 25, 1:39 AM CDT	Special Weather Statement	LZK	Woodruff	46 min
Apr 25, 1:42 AM CDT	Severe Thunderstorm Warning	LZK	Clark, Hot Spring, Pike	48 min
Apr 25, 2:03 AM CDT	Special Weather Statement	LZK	Prairie	47 min
Apr 25, 2:31 AM CDT	Special Weather Statement	LZK	Clark, Grant, Hot Spring	44 min
Apr 25, 5:03 AM CDT	Lake Wind Advisory	LZK	Arkansas, Baxter, Bradley, Calhoun, Clark, Cleburne and 28 more	17 hr
Apr 25, 6:01 AM CDT	Severe Thunderstorm Warning	LZK	Polk	44 min
Apr 25, 6:48 AM CDT	Severe Thunderstorm Warning	LZK	Montgomery, Pike, Polk	57 min
Apr 25, 7:00 AM CDT	Flash Flood Warning	LZK	Baxter, Boone, Marion	3 hr
Apr 25, 7:41 AM CDT	Special Weather Statement	LZK	Clark, Garland, Hot Spring, Montgomery	44 min
Apr 25, 8:01 AM CDT	Severe Thunderstorm Warning	LZK	Clark, Dallas, Grant, Hot Spring	44 min
Apr 25, 8:22 AM CDT	River Flood Warning	LZK	Saline	43 hr
Apr 25, 8:25 AM CDT	Special Weather Statement	LZK	Pulaski, Saline	45 min
Apr 25, 8:39 AM CDT	Severe Thunderstorm Warning	LZK	Cleveland, Dallas, Grant, Hot Spring, Jefferson, Saline	51 min
Apr 25, 9:16 AM CDT	Special Weather Statement	LZK	Lonoke, Prairie, Pulaski	44 min
Apr 25, 9:19 AM CDT	Severe Thunderstorm Warning	LZK	Arkansas, Grant, Jefferson, Lonoke, Prairie, Pulaski and 1 more	41 min
Apr 25, 9:35 AM CDT	Severe Thunderstorm Warning	LZK	Clark, Dallas, Hot Spring, Ouachita, Pike	40 min
Apr 25, 9:45 AM CDT	River Flood Warning	LZK	Conway, Perry	5 days
Apr 25, 9:45 AM CDT	River Flood Warning	LZK	Perry	13 days
Apr 25, 9:54 AM CDT	Severe Thunderstorm Warning	LZK	Arkansas, Jefferson, Lonoke, Monroe, Prairie	51 min
Apr 25, 9:59 AM CDT	Special Weather Statement	LZK	Prairie, Woodruff	46 min
Apr 25, 10:11 AM CDT	Flash Flood Warning	LZK	Clark, Cleveland, Dallas, Grant, Hot Spring, Jefferson and 1 more	3 hr
Apr 25, 10:21 AM CDT	Special Weather Statement	LZK	Dallas	29 min
Apr 25, 10:39 AM CDT	Flash Flood Warning	LZK	Fulton, Independence, Izard, Jackson, Sharp, Stone	3 hr
Apr 25, 10:45 AM CDT	Special Weather Statement	LZK	Arkansas, Monroe	30 min
Apr 25, 11:49 AM CDT	River Flood Warning	LZK	Prairie, White, Woodruff	50 days
Apr 25, 11:49 AM CDT	River Flood Warning	LZK	Prairie	50 days
Apr 25, 11:49 AM CDT	River Flood Warning	LZK	Arkansas, Monroe	58 days
Apr 25, 11:49 AM CDT	River Flood Warning	LZK	White	19 days
Apr 25, 12:16 PM CDT	Severe Thunderstorm Warning	LZK	Polk, Scott	44 min
Apr 25, 12:48 PM CDT	River Flood Warning	LZK	Yell	3 days
Apr 25, 12:58 PM CDT	Special Weather Statement	LZK	Scott	32 min
Apr 25, 1:43 PM CDT	Severe Thunderstorm Warning	LZK	Polk	47 min
Apr 25, 2:06 PM CDT	Tornado Warning	LZK	Johnson, Logan, Scott	39 min
Apr 25, 2:32 PM CDT	Special Weather Statement	LZK	Polk	43 min
Apr 25, 2:35 PM CDT	Tornado Warning	LZK	Montgomery, Polk	25 min
Apr 25, 2:42 PM CDT	Flash Flood Warning	LZK	Montgomery, Polk, Scott	3 hr
Apr 25, 2:55 PM CDT	Flash Flood Warning	LZK	Baxter, Boone, Johnson, Marion, Newton, Pope and 1 more	6 hr
Apr 25, 2:55 PM CDT	Tornado Warning	LZK	Montgomery, Polk	35 min
Apr 25, 3:11 PM CDT	Tornado Warning	LZK	Montgomery, Scott, Yell	34 min
Apr 25, 3:16 PM CDT	Severe Thunderstorm Warning	LZK	Garland, Hot Spring, Montgomery, Perry, Pike, Yell	44 min
Apr 25, 3:37 PM CDT	Severe Thunderstorm Warning	LZK	Logan, Montgomery, Perry, Scott, Yell	38 min
Apr 25, 3:38 PM CDT	Tornado Warning	LZK	Clark, Montgomery, Pike	52 min
Apr 25, 3:40 PM CDT	Tornado Warning	LZK	Garland, Montgomery, Perry	35 min
Apr 25, 3:46 PM CDT	Severe Thunderstorm Warning	LZK	Fulton, Independence, Izard, Sharp, Stone	44 min
Apr 25, 3:50 PM CDT	Tornado Warning	LZK	Fulton, Independence, Izard, Sharp, Stone	25 min

Nearby

Flash Flood Warnings in Arkansas, 2011 Every flash flood warning in 2011

Sources

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.