Alert archive / Arkansas / Tornado Warnings in 2011

Tornado Warning 21, NWS Little Rock, AR

April 15, 20114 counties in Arkansas

NWS Little Rock, AR issued this tornado warning at Apr 15, 2011, 2:30 AM CDT for 4 counties in Arkansas. It was in force for 45 min. 2 reports 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: Apr 15, 2011, 2:30 AM CDT (07:30 UTC)
Expired: Apr 15, 2011, 3:15 AM CDT
In force: 45 min
Issued by: NWS Little Rock, AR
Area: Storm-based polygon

Counties Lonoke County, AR, Monroe County, AR, Prairie County, AR, Woodruff County, AR

The radar

The Little Rock radar (KLZK), 89 km from the middle of the area, began a volume at 07:33 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
Apr 15, 3:05 AM CDT	TSTM WND DMG	Clarendon, AR	NUMEROUS TREES AND POWER LINES WERE REPORTED DOWNED BY THE STORMS THROUGHOUT MONROE COUNTY.
Apr 15, 3:10 AM CDT	TSTM WND DMG	Brinkley, AR	TREES AND POWER LINES WERE BLOWN DOWN IN BRINKLEY. ALSO...LARGE SIGNS OF SEVERAL BUSINESSES WERE BLOWN DOWN.

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

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Apr 14, 9:06 PM CDT	Tornado Watch	SPC	6 hr
Apr 15, 2:19 AM CDT	Tornado Watch	SPC	8 hr

The nearest sounding before it

Little Rock, AR (KLZK), launched 00:00Z, 7.5 hours before the alert went out and 122 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: 195 J/kg
Mixed-layer CIN: -128 J/kg
Mixed-layer LCL: 1615 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: 62 m²/s²
0-3 km storm-relative helicity: 170 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.4

Open this sounding in Storm Lab

The text

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

879 
WFUS54 KLZK 150730
TORLZK
ARC085-095-117-147-150815-
/O.NEW.KLZK.TO.W.0021.110415T0730Z-110415T0815Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE LITTLE ROCK AR
230 AM CDT FRI APR 15 2011

THE NATIONAL WEATHER SERVICE IN LITTLE ROCK HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTH CENTRAL WOODRUFF COUNTY IN EASTERN ARKANSAS...
  CENTRAL PRAIRIE COUNTY IN CENTRAL ARKANSAS...
  CENTRAL LONOKE COUNTY IN CENTRAL ARKANSAS...
  NORTHERN MONROE COUNTY IN EASTERN ARKANSAS...

* UNTIL 315 AM CDT

* AT 229 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO.  THIS SEVERE
  STORM WAS LOCATED 6 MILES SOUTH OF SISEMORE...OR 6 MILES SOUTHEAST
  OF LONOKE. DOPPLER RADAR SHOWED THIS SEVERE STORM MOVING EAST AT 60
  MPH.

* LOCATIONS IN THE PATH OF THIS DANGEROUS STORM INCLUDE...
  LONOKE...             HAZEN...              BRINKLEY...
  SISEMORE...           PRAIRIE CENTER...     PEPPERS LANDING...
  PARKERS CORNER...     MCCREANOR...          HALLSVILLE...
  FREDONIA (BISCOE)...  DOBBS LANDING...      DE VALLS BLUFF...
  DAGMAR WMA...         CLARENDON...          CARLISLE...
  BARRETTSVILLE...      ALLENDALE...          ALFREY...

THIS INCLUDES INTERSTATE 40 BETWEEN MILE MARKERS 177 AND 218.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.

&&

LAT...LON 3459 9191 3477 9197 3502 9111 3500 9110
      3500 9114 3492 9114 3491 9111 3488 9111
      3487 9109 3475 9109 3473 9104 3469 9104
TIME...MOT...LOC 0730Z 254DEG 51KT 3471 9183

$$

BJS

1 follow-up statement

414 
WWUS54 KLZK 150750
SVSLZK

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LITTLE ROCK AR
250 AM CDT FRI APR 15 2011

ARC085-150800-
/O.CAN.KLZK.TO.W.0021.000000T0000Z-110415T0815Z/
LONOKE AR-
250 AM CDT FRI APR 15 2011

...THE TORNADO WARNING FOR CENTRAL LONOKE COUNTY IS CANCELLED...

THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED 
AREA.

LAT...LON 3463 9157 3486 9166 3502 9111 3500 9110
      3500 9114 3492 9114 3491 9111 3488 9111
      3487 9109 3475 9109 3473 9104 3469 9104
TIME...MOT...LOC 0750Z 254DEG 51KT 3478 9150

$$

ARC095-117-147-150815-
/O.CON.KLZK.TO.W.0021.000000T0000Z-110415T0815Z/
MONROE AR-PRAIRIE AR-WOODRUFF AR-
250 AM CDT FRI APR 15 2011

...A TORNADO WARNING REMAINS IN EFFECT FOR SOUTH CENTRAL WOODRUFF...
CENTRAL PRAIRIE AND NORTHERN MONROE COUNTIES UNTIL 315 AM CDT...

AT 247 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO.  THIS
DANGEROUS STORM WAS LOCATED 2 MILES SOUTHEAST OF HAZEN...MOVING EAST
AT 60 MPH.

* LOCATIONS IN OR NEAR THE PATH OF THIS DANGEROUS STORM INCLUDE...
  HAZEN...              BRINKLEY...           PEPPERS LANDING...
  HALLSVILLE...         FREDONIA (BISCOE)...  DOBBS LANDING...
  DE VALLS BLUFF...     DAGMAR WMA...         CLARENDON...
  ALLENDALE...          ALFREY...             ZENT...
  TOLLVILLE...          MONROE...             KEEVIL...
  FARGO...              CENTER POINT...       BRASFIELD...

THIS INCLUDES INTERSTATE 40 BETWEEN MILE MARKERS 190 AND 218.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.

&&

LAT...LON 3463 9157 3486 9166 3502 9111 3500 9110
      3500 9114 3492 9114 3491 9111 3488 9111
      3487 9109 3475 9109 3473 9104 3469 9104
TIME...MOT...LOC 0750Z 254DEG 51KT 3478 9150

$$

BJS

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 14, 10:17 PM CDT	Severe Thunderstorm Warning	LZK	Logan, Polk, Scott	58 min
Apr 14, 10:26 PM CDT	Severe Thunderstorm Warning	LZK	Garland, Montgomery, Perry, Yell	49 min
Apr 14, 10:35 PM CDT	Tornado Warning	LZK	Logan, Scott	25 min
Apr 14, 10:39 PM CDT	Tornado Warning	LZK	Polk, Scott	51 min
Apr 14, 10:40 PM CDT	Tornado Warning	LZK	Logan, Montgomery, Perry, Yell	50 min
Apr 14, 10:58 PM CDT	Tornado Warning	LZK	Polk	32 min
Apr 14, 11:00 PM CDT	Tornado Warning	LZK	Logan, Scott	30 min
Apr 14, 11:06 PM CDT	Severe Thunderstorm Warning	LZK	Johnson, Logan, Montgomery, Pike, Polk, Scott and 1 more	39 min
Apr 14, 11:10 PM CDT	Tornado Warning	LZK	Logan	35 min
Apr 14, 11:23 PM CDT	Tornado Warning	LZK	Logan, Pope, Yell	37 min
Apr 14, 11:28 PM CDT	Tornado Warning	LZK	Montgomery, Polk	47 min
Apr 14, 11:37 PM CDT	Tornado Warning	LZK	Johnson, Logan, Pope	19 min
Apr 14, 11:44 PM CDT	Severe Thunderstorm Warning	LZK	Johnson, Logan, Montgomery, Pike, Polk, Pope and 2 more	46 min
Apr 15, 12:04 AM CDT	Severe Thunderstorm Warning	LZK	Conway, Garland, Montgomery, Perry, Pope, Saline and 1 more	41 min
Apr 15, 12:07 AM CDT	Tornado Warning	LZK	Garland, Montgomery, Yell	53 min
Apr 15, 12:12 AM CDT	Severe Thunderstorm Warning	LZK	Cleburne, Independence, Izard, Sharp	35 min
Apr 15, 12:22 AM CDT	Severe Thunderstorm Warning	LZK	Clark, Garland, Hot Spring, Montgomery, Pike	42 min
Apr 15, 12:45 AM CDT	Severe Thunderstorm Warning	LZK	Conway, Faulkner, Garland, Perry, Pope, Pulaski and 2 more	45 min
Apr 15, 12:51 AM CDT	Severe Thunderstorm Warning	LZK	Clark, Garland, Grant, Hot Spring, Perry, Pike and 3 more	39 min
Apr 15, 1:11 AM CDT	Special Weather Statement	LZK	Jackson	29 min
Apr 15, 1:23 AM CDT	Severe Thunderstorm Warning	LZK	Cleburne, Conway, Faulkner, Lonoke, Perry, Prairie and 3 more	52 min
Apr 15, 1:24 AM CDT	Tornado Warning	LZK	Faulkner, Perry, Pulaski, Saline	36 min
Apr 15, 1:25 AM CDT	Severe Thunderstorm Warning	LZK	Faulkner, Garland, Grant, Hot Spring, Perry, Pulaski and 1 more	50 min
Apr 15, 1:47 AM CDT	Tornado Warning	LZK	Cleburne, Independence, Stone, White	28 min
Apr 15, 1:56 AM CDT	Tornado Warning	LZK	Grant, Lonoke, Prairie, Pulaski, Saline	34 min
Apr 15, 1:58 AM CDT	Tornado Warning	LZK	Faulkner, Lonoke, Pulaski, White	21 min
Apr 15, 1:59 AM CDT	Tornado Warning	LZK	Lonoke, Pulaski, White	46 min
Apr 15, 2:02 AM CDT	Tornado Warning	LZK	Lonoke, Pulaski	43 min
Apr 15, 2:19 AM CDT	Severe Thunderstorm Warning	LZK	Arkansas, Cleveland, Dallas, Grant, Jefferson, Lincoln and 3 more	41 min
Apr 15, 2:20 AM CDT	Severe Thunderstorm Warning	LZK	Bradley, Calhoun, Cleveland, Dallas, Ouachita	40 min
Apr 15, 2:39 AM CDT	Tornado Warning	LZK	Calhoun, Cleveland, Dallas, Lincoln, Ouachita	51 min
Apr 15, 2:40 AM CDT	Severe Thunderstorm Warning	LZK	Independence, Jackson, Monroe, Prairie, Sharp, White and 1 more	50 min
Apr 15, 2:40 AM CDT	Tornado Warning	LZK	Lonoke, Monroe, Prairie, White, Woodruff	50 min
Apr 15, 2:49 AM CDT	Severe Thunderstorm Warning	LZK	Arkansas, Jefferson, Lincoln, Monroe, Prairie, Woodruff	56 min
Apr 15, 2:49 AM CDT	Tornado Warning	LZK	Arkansas, Jefferson	18 min
Apr 15, 2:58 AM CDT	Severe Thunderstorm Warning	LZK	Arkansas, Bradley, Calhoun, Cleveland, Dallas, Drew and 4 more	47 min
Apr 15, 3:10 AM CDT	Flash Flood Warning	LZK	Baxter, Izard, Marion, Newton, Pope, Searcy and 2 more	110 min
Apr 15, 3:42 AM CDT	Severe Thunderstorm Warning	LZK	Arkansas, Bradley, Cleveland, Desha, Drew, Jefferson and 2 more	63 min
Apr 15, 4:14 AM CDT	Tornado Warning	LZK	Desha, Drew	46 min
Apr 15, 4:55 AM CDT	Severe Thunderstorm Warning	LZK	Desha	30 min

Nearby

Tornado Warnings in Arkansas, 2011 Every tornado warning in 2011 Tornadoes 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.