Alert archive / Arkansas / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 430, NWS Little Rock, AR

May 21, 2011Calhoun County, Dallas County, Ouachita County, Arkansas

NWS Little Rock, AR issued this severe thunderstorm warning at May 21, 2011, 7:55 PM CDT for Calhoun County, Dallas County, Ouachita County, Arkansas. It was in force for 50 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: May 21, 2011, 7:55 PM CDT (00:55 UTC)
Expired: May 21, 2011, 8:45 PM CDT
In force: 50 min
Issued by: NWS Little Rock, AR
Area: Storm-based polygon

Counties Calhoun County, AR, Dallas County, AR, Ouachita County, AR

The radar

The Shreveport radar (KSHV), 145 km from the middle of the area, began a volume at 00:55 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.

What was reported inside it

Time	Report	Where	Remark
May 21, 8:45 PM CDT	HAIL 1	1 W Camden, AR	LAW ENFORCEMENT REPORTED QUARTER SIZE HAIL ON HWY 278 WEST.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Shreveport, LA (KSHV), launched 00:00Z, 0.9 hours before the alert went out and 137 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: 2383 J/kg
Mixed-layer CIN: -12 J/kg
Mixed-layer LCL: 1022 m above ground
0-6 km bulk shear: 44 kt
0-1 km storm-relative helicity: 168 m²/s²
0-3 km storm-relative helicity: 324 m²/s²
Significant tornado parameter: 3.7
Supercell composite: 31.0

Open this sounding in Storm Lab

The text

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

666 
WUUS54 KLZK 220055
SVRLZK
ARC013-039-103-220145-
/O.NEW.KLZK.SV.W.0430.110522T0055Z-110522T0145Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE LITTLE ROCK AR
755 PM CDT SAT MAY 21 2011

THE NATIONAL WEATHER SERVICE IN LITTLE ROCK HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  WEST CENTRAL CALHOUN COUNTY IN SOUTHWEST ARKANSAS...
  SOUTHWESTERN DALLAS COUNTY IN SOUTHWEST ARKANSAS...
  OUACHITA COUNTY IN SOUTHWEST ARKANSAS...

* UNTIL 845 PM CDT

* AT 754 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
  DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED 5 MILES
  NORTH OF STEPHENS...OR 12 MILES NORTHEAST OF MCNEIL...AND MOVING
  NORTHEAST AT 30 MPH.

* LOCATIONS IMPACTED INCLUDE...
  CAMDEN...             STEPHENS...           PACE CITY...
  LUNET...              LESTER...            
  HIGHLAND INDSTRL PK...                      CULLENDALE...
  BEARDEN...            WOODBERRY...          WARNER...
  TROY...               TATES BLUFF...        PINE GROVE...
  OUACHITA...           OGEMAW...             MILLVILLE...
  LOCUST BAYOU...       HOLLY SPRINGS...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER
HOUR...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR
YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR
HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE
INTO AREAS WHERE WATER COVERS THE ROAD.

&&

LAT...LON 3338 9296 3338 9310 3338 9311 3364 9312
      3365 9311 3390 9278 3363 9244 3337 9286
      3337 9295
TIME...MOT...LOC 0056Z 228DEG 28KT 3351 9307

$$

62

3 follow-up statements

371 
WWUS54 KLZK 220109
SVSLZK

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LITTLE ROCK AR
809 PM CDT SAT MAY 21 2011

ARC013-039-103-220145-
/O.CON.KLZK.SV.W.0430.000000T0000Z-110522T0145Z/
CALHOUN AR-OUACHITA AR-DALLAS AR-
809 PM CDT SAT MAY 21 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHWESTERN
DALLAS...OUACHITA AND WEST CENTRAL CALHOUN COUNTIES UNTIL 845 PM
CDT...

AT 807 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS
LOCATED 8 MILES NORTH OF STEPHENS...OR 11 MILES WEST OF CAMDEN...
MOVING NORTHEAST AT 20 MPH.

* LOCATIONS IN THE PATH OF THIS SEVERE THUNDERSTORM INCLUDE...
  CAMDEN...             STEPHENS...           PACE CITY...
  LUNET...              LESTER...            
  HIGHLAND INDSTRL PK...                      CULLENDALE...
  BEARDEN...            WOODBERRY...          WARNER...
  TROY...               TATES BLUFF...        PINE GROVE...
  OUACHITA...           OGEMAW...             MILLVILLE...
  LOCUST BAYOU...       HOLLY SPRINGS...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER
HOUR...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR
YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR
HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE
INTO AREAS WHERE WATER COVERS THE ROAD.

&&

LAT...LON 3338 9296 3338 9311 3364 9312 3365 9311
      3390 9278 3363 9244 3337 9286 3337 9295
TIME...MOT...LOC 0109Z 233DEG 19KT 3353 9303

$$

62

895 
WWUS54 KLZK 220124
SVSLZK

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LITTLE ROCK AR
824 PM CDT SAT MAY 21 2011

ARC013-039-103-220145-
/O.CON.KLZK.SV.W.0430.000000T0000Z-110522T0145Z/
CALHOUN AR-OUACHITA AR-DALLAS AR-
824 PM CDT SAT MAY 21 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHWESTERN
DALLAS...OUACHITA AND WEST CENTRAL CALHOUN COUNTIES UNTIL 845 PM
CDT...

AT 819 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS
LOCATED 7 MILES NORTH OF STEPHENS...OR 14 MILES WEST OF CAMDEN...
MOVING NORTHEAST AT 30 MPH.

* LOCATIONS IN THE PATH OF THIS SEVERE THUNDERSTORM INCLUDE...
  CAMDEN...             STEPHENS...           PACE CITY...
  LUNET...              LESTER...            
  HIGHLAND INDSTRL PK...                      CULLENDALE...
  BEARDEN...            WOODBERRY...          WARNER...
  TROY...               TATES BLUFF...        PINE GROVE...
  OUACHITA...           OGEMAW...             MILLVILLE...
  LOCUST BAYOU...       HOLLY SPRINGS...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER
HOUR...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR
YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR
HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE
INTO AREAS WHERE WATER COVERS THE ROAD.

&&

LAT...LON 3338 9296 3338 9311 3364 9312 3365 9311
      3390 9278 3363 9244 3337 9286 3337 9295
TIME...MOT...LOC 0124Z 243DEG 26KT 3354 9304

$$

62

804 
WWUS54 KLZK 220129
SVSLZK

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LITTLE ROCK AR
829 PM CDT SAT MAY 21 2011

ARC013-039-103-220145-
/O.CON.KLZK.SV.W.0430.000000T0000Z-110522T0145Z/
CALHOUN AR-OUACHITA AR-DALLAS AR-
829 PM CDT SAT MAY 21 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHWESTERN
DALLAS...OUACHITA AND WEST CENTRAL CALHOUN COUNTIES UNTIL 845 PM
CDT...

AT 828 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING GOLF BALL SIZE
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS
LOCATED 9 MILES SOUTH OF WHITE OAK LAKE...OR 13 MILES WEST OF
CAMDEN...MOVING NORTHEAST AT 25 MPH.

* LOCATIONS IN THE PATH OF THIS SEVERE THUNDERSTORM INCLUDE...
  CAMDEN...             STEPHENS...           LUNET...
  LESTER...             HIGHLAND INDSTRL PK...
  CULLENDALE...         BEARDEN...            WARNER...
  TROY...               TATES BLUFF...        PINE GROVE...
  OUACHITA...           OGEMAW...             MILLVILLE...
  LOCUST BAYOU...       HOLLY SPRINGS...      HARMONY GROVE...
  EAST CAMDEN...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF YOU ARE IN THE PATH OF THIS STORM...PREPARE IMMEDIATELY FOR LARGE
HAIL AND DEADLY CLOUD TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE
TO A SHELTER...PREFERABLY INSIDE A STRONG BUILDING AND AWAY FROM
WINDOWS.

&&

LAT...LON 3363 9244 3338 9311 3364 9312 3365 9311
      3390 9278
TIME...MOT...LOC 0129Z 234DEG 23KT 3355 9306

$$

62

The office that day

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

Issued	Product	Office	Counties	Lasted
May 21, 7:31 PM CDT	Severe Thunderstorm Warning	LZK	Clark, Dallas, Ouachita	29 min
May 21, 7:51 PM CDT	Special Weather Statement	LZK	Pike	44 min
May 21, 8:22 PM CDT	Special Weather Statement	LZK	Garland, Hot Spring	48 min
May 21, 8:25 PM CDT	Severe Thunderstorm Warning	LZK	Clark, Dallas, Ouachita	50 min
May 21, 8:38 PM CDT	Severe Thunderstorm Warning	LZK	Calhoun, Dallas, Ouachita	39 min
May 21, 9:22 PM CDT	Special Weather Statement	LZK	Clark, Dallas, Hot Spring	28 min
May 21, 9:40 PM CDT	Severe Thunderstorm Warning	LZK	Cleveland, Dallas, Grant, Hot Spring	35 min
May 21, 10:15 PM CDT	Severe Thunderstorm Warning	LZK	Dallas, Grant, Hot Spring, Saline	21 min
May 22, 2:40 AM CDT	Lake Wind Advisory	LZK	Arkansas, Baxter, Bradley, Calhoun, Clark, Cleburne and 28 more	13 hr
May 22, 4:58 AM CDT	Severe Thunderstorm Warning	LZK	Clark, Garland, Hot Spring, Montgomery, Pike	47 min
May 22, 5:45 AM CDT	Severe Thunderstorm Warning	LZK	Garland, Hot Spring	45 min
May 22, 6:15 AM CDT	Severe Thunderstorm Warning	LZK	Garland, Perry, Saline	33 min
May 22, 6:18 AM CDT	Severe Thunderstorm Warning	LZK	Garland, Hot Spring, Montgomery	42 min
May 22, 6:26 AM CDT	Special Weather Statement	LZK	Cleveland	44 min
May 22, 6:36 AM CDT	Severe Thunderstorm Warning	LZK	Cleveland, Dallas, Jefferson, Lincoln	39 min
May 22, 6:49 AM CDT	Severe Thunderstorm Warning	LZK	Arkansas, Grant, Jefferson, Lonoke	41 min
May 22, 6:52 AM CDT	Severe Thunderstorm Warning	LZK	Garland, Perry, Pulaski, Saline	38 min
May 22, 6:55 AM CDT	Severe Thunderstorm Warning	LZK	Garland, Saline	50 min
May 22, 7:09 AM CDT	Severe Thunderstorm Warning	LZK	Garland, Montgomery	51 min
May 22, 7:11 AM CDT	Severe Thunderstorm Warning	LZK	Arkansas, Monroe	31 min
May 22, 7:15 AM CDT	Severe Thunderstorm Warning	LZK	Cleveland, Jefferson, Lincoln	45 min
May 22, 7:26 AM CDT	Special Weather Statement	LZK	Monroe	44 min
May 22, 7:32 AM CDT	Special Weather Statement	LZK	Pulaski	43 min
May 22, 7:38 AM CDT	Severe Thunderstorm Warning	LZK	Hot Spring, Pulaski, Saline	37 min
May 22, 7:48 AM CDT	Special Weather Statement	LZK	Cleburne	47 min
May 22, 8:09 AM CDT	Special Weather Statement	LZK	Cleveland, Lincoln	46 min
May 22, 8:21 AM CDT	Special Weather Statement	LZK	Garland, Montgomery	44 min
May 22, 8:27 AM CDT	Special Weather Statement	LZK	Faulkner	43 min
May 22, 8:34 AM CDT	Severe Thunderstorm Warning	LZK	Faulkner, White	17 min
May 22, 8:43 AM CDT	Special Weather Statement	LZK	Arkansas, Lincoln	47 min
May 22, 9:29 AM CDT	Severe Thunderstorm Warning	LZK	Garland, Hot Spring, Saline	46 min
May 22, 9:54 AM CDT	Severe Thunderstorm Warning	LZK	Clark, Dallas, Hot Spring	27 min
May 22, 10:17 AM CDT	Severe Thunderstorm Warning	LZK	Pulaski, Saline	33 min
May 22, 10:36 AM CDT	Severe Thunderstorm Warning	LZK	Woodruff	39 min
May 22, 10:45 AM CDT	Severe Thunderstorm Warning	LZK	Lonoke, Pulaski, Saline	45 min
May 22, 11:23 AM CDT	Flash Flood Warning	LZK	Pulaski, Saline	3 hr
May 22, 11:33 AM CDT	Severe Thunderstorm Warning	LZK	Lonoke, Prairie, Pulaski	42 min
May 22, 12:43 PM CDT	Severe Thunderstorm Warning	LZK	Grant, Lonoke, Pulaski, Saline	47 min
May 22, 12:49 PM CDT	Severe Thunderstorm Warning	LZK	Arkansas, Monroe, Prairie	41 min
May 22, 3:02 PM CDT	Special Weather Statement	LZK	Searcy	43 min
May 22, 3:30 PM CDT	Special Weather Statement	LZK	Jackson	45 min
May 22, 3:38 PM CDT	Special Weather Statement	LZK	Searcy, Stone, Van Buren	47 min
May 22, 3:55 PM CDT	Severe Thunderstorm Warning	LZK	Cleburne, Independence, Izard, Stone, Van Buren	50 min
May 22, 4:14 PM CDT	Special Weather Statement	LZK	Jackson	46 min
May 22, 4:22 PM CDT	Special Weather Statement	LZK	Cleburne	28 min
May 22, 4:45 PM CDT	Special Weather Statement	LZK	Independence	45 min
May 22, 4:47 PM CDT	Special Weather Statement	LZK	Jackson	43 min
May 22, 4:54 PM CDT	Severe Thunderstorm Warning	LZK	Independence, Jackson, Sharp, Stone	21 min
May 22, 5:08 PM CDT	Flash Flood Warning	LZK	Baxter, Newton, Pope, Searcy, Stone, Van Buren	3 hr
May 22, 5:08 PM CDT	Special Weather Statement	LZK	Izard	47 min
May 22, 5:08 PM CDT	Severe Thunderstorm Warning	LZK	Independence, Jackson	22 min
May 22, 5:15 PM CDT	Severe Thunderstorm Warning	LZK	Baxter, Izard, Stone	45 min
May 22, 6:00 PM CDT	Severe Thunderstorm Warning	LZK	Izard, Sharp	45 min
May 22, 6:05 PM CDT	Flash Flood Warning	LZK	Baxter, Izard, Stone	3 hr
May 22, 6:43 PM CDT	Severe Thunderstorm Warning	LZK	Izard, Sharp	32 min

Nearby

Severe Thunderstorm Warnings in Arkansas, 2011 Every severe thunderstorm 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.