Alert archive / Arkansas / Tornado Warnings in 2011

Tornado Warning 23, NWS Little Rock, AR

April 15, 20115 counties in Arkansas

NWS Little Rock, AR issued this tornado warning at Apr 15, 2011, 2:40 AM CDT for 5 counties in Arkansas. It was in force for 50 min. 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 15, 2011, 2:40 AM CDT (07:40 UTC)
Expired: Apr 15, 2011, 3:30 AM CDT
In force: 50 min
Issued by: NWS Little Rock, AR
Area: Storm-based polygon

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

The radar

The Little Rock radar (KLZK), 95 km from the middle of the area, began a volume at 07:42 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 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, 7.7 hours before the alert went out and 120 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.

530 
WFUS54 KLZK 150740
TORLZK
ARC085-095-117-145-147-150830-
/O.NEW.KLZK.TO.W.0023.110415T0740Z-110415T0830Z/

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

THE NATIONAL WEATHER SERVICE IN LITTLE ROCK HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHEASTERN WHITE COUNTY IN CENTRAL ARKANSAS...
  SOUTHERN WOODRUFF COUNTY IN EASTERN ARKANSAS...
  NORTHERN PRAIRIE COUNTY IN CENTRAL ARKANSAS...
  NORTHEASTERN LONOKE COUNTY IN CENTRAL ARKANSAS...
  EXTREME NORTH CENTRAL MONROE COUNTY IN EASTERN ARKANSAS...

* UNTIL 330 AM CDT

* AT 238 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO.  THIS SEVERE
  STORM WAS LOCATED 7 MILES NORTH OF MCCREANOR...OR 9 MILES NORTHEAST
  OF LONOKE. DOPPLER RADAR SHOWED THIS SEVERE STORM MOVING EAST AT 50
  MPH. IN ADDITION...STRAIGHT LINE WINDS IN EXCESS OF 80 MILES PER   
  HOUR WILL BE POSSIBLE WITH THIS STORM

* LOCATIONS IN THE PATH OF THIS DANGEROUS STORM INCLUDE...
  THURMAN...            HUNTER...             GEORGETOWN...
  DES ARC...            BARRETTSVILLE...      ZENT...
  WIVILLE...            VINITY CORNER...      PENROSE...
  MORTON...             MCCLELLAND...         JASMINE...
  HOWELL...             HILLEMAN...           HICKORY PLAINS...
  HAYLEY...             GREGORY...            GRAYS...

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 3500 9108 3500 9113 3498 9114 3482 9182
      3506 9186 3529 9105 3513 9103 3501 9104
TIME...MOT...LOC 0739Z 253DEG 44KT 3488 9178

$$

225

2 follow-up statements

722 
WWUS54 KLZK 150751
SVSLZK

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

ARC085-145-150802-
/O.CAN.KLZK.TO.W.0023.000000T0000Z-110415T0830Z/
LONOKE AR-WHITE AR-
251 AM CDT FRI APR 15 2011

...THE TORNADO WARNING FOR SOUTHEASTERN WHITE AND NORTHEASTERN LONOKE
COUNTIES IS CANCELLED...

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

LAT...LON 3501 9104 3500 9113 3498 9114 3485 9168
      3501 9170 3504 9163 3503 9158 3506 9158
      3510 9149 3510 9142 3511 9144 3529 9105
      3513 9103
TIME...MOT...LOC 0752Z 253DEG 44KT 3492 9159

$$

ARC095-117-147-150830-
/O.CON.KLZK.TO.W.0023.000000T0000Z-110415T0830Z/
MONROE AR-PRAIRIE AR-WOODRUFF AR-
251 AM CDT FRI APR 15 2011

...A TORNADO WARNING REMAINS IN EFFECT FOR SOUTHERN WOODRUFF...
NORTHERN PRAIRIE AND EXTREME NORTH CENTRAL MONROE COUNTIES UNTIL 330
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 3 MILES NORTH OF BARRETTSVILLE...OR 9
MILES NORTHWEST OF HAZEN...MOVING EAST AT 50 MPH.

* LOCATIONS IN OR NEAR THE PATH OF THIS DANGEROUS STORM INCLUDE...
  HUNTER...             DES ARC...            BARRETTSVILLE...
  ZENT...               WIVILLE...            PENROSE...
  MORTON...             MCCLELLAND...         HOWELL...
  HILLEMAN...           HAYLEY...             GREGORY...
  DIXIE...              COTTON PLANT...       CHILDERS...
  BECTON...             TIPP...               SAULSBURG...

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 3501 9104 3500 9113 3498 9114 3485 9168
      3501 9170 3504 9163 3503 9158 3506 9158
      3510 9149 3510 9142 3511 9144 3529 9105
      3513 9103
TIME...MOT...LOC 0752Z 253DEG 44KT 3492 9159

$$

BJS

147 
WWUS54 KLZK 150817 RRA
SVSLZK

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

ARC117-150826-
/O.CAN.KLZK.TO.W.0023.000000T0000Z-110415T0830Z/
PRAIRIE AR-
317 AM CDT FRI APR 15 2011

...THE TORNADO WARNING FOR NORTHERN PRAIRIE COUNTY IS CANCELLED...

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

LAT...LON 3501 9104 3500 9113 3498 9114 3498 9116
      3497 9119 3494 9132 3515 9133 3511 9144
      3529 9105 3513 9103
TIME...MOT...LOC 0816Z 253DEG 44KT 3498 9124

$$

ARC095-147-150830-
/O.CON.KLZK.TO.W.0023.000000T0000Z-110415T0830Z/
MONROE AR-WOODRUFF AR-
317 AM CDT FRI APR 15 2011

...A TORNADO WARNING REMAINS IN EFFECT FOR SOUTHERN WOODRUFF AND
EXTREME NORTH CENTRAL MONROE COUNTIES UNTIL 330 AM CDT...

AT 314 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO.  THIS
DANGEROUS STORM WAS LOCATED 6 MILES NORTHEAST OF DAGMAR WMA...OR 8
MILES NORTHWEST OF BRINKLEY...MOVING EAST AT 50 MPH.

* LOCATIONS IN OR NEAR THE PATH OF THIS DANGEROUS STORM INCLUDE...
  HUNTER...             ZENT...               WIVILLE...
  PENROSE...            MORTON...             HOWELL...
  HILLEMAN...           GREGORY...            COTTON PLANT...
  BECTON...             TIPP...               SAULSBURG...
  POLLY ANN LAKE...     MILL LAKE...          LOST LAKE...
  CHEATAM LAKE...       BIG COTTON LAKE...    LITTLE COTTON LAKE...

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 3501 9104 3500 9113 3498 9114 3498 9116
      3497 9119 3494 9132 3515 9133 3511 9144
      3529 9105 3513 9103
TIME...MOT...LOC 0816Z 253DEG 44KT 3498 9124

$$

225

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, 2:30 AM CDT	Tornado Warning	LZK	Lonoke, Monroe, Prairie, Woodruff	45 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, 2:49 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.