Alert archive / Arkansas / Tornado Warnings in 2012

Tornado Warning 21, NWS Little Rock, AR

April 15, 20124 counties in Arkansas

NWS Little Rock, AR issued this tornado warning at Apr 15, 2012, 6:01 PM CDT for 4 counties in Arkansas. It was in force for 29 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, 2012, 6:01 PM CDT (23:01 UTC)
Expired
Apr 15, 2012, 6:30 PM CDT
In force
29 min
Issued by
NWS Little Rock, AR
Area
Storm-based polygon

Counties Cleburne County, AR, Conway County, AR, Faulkner County, AR, Van Buren County, AR

The radar

The Little Rock radar (KLZK), 83 km from the middle of the area, began a volume at 23:04 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

TimeReportWhereRemark
Apr 15, 6:09 PM CDTTSTM WND DMGMorganton, ARTREES WERE BLOWN DOWN ONTO POWER LINES ON ARKANSAS 356. THERE IS A POSSIBILITY THAT THIS WAS A BRIEF TORNADO. THE TIME WAS APPROXIMATED BASED ON RADAR.
Apr 15, 6:11 PM CDTTORNADO1 Wnw Fairbanks, ARNWS SURVEY TEAM IS CONTINUING THIS SURVEY.

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.

IssuedProductOfficeLasted
Apr 15, 4:25 PM CDTTornado WatchSPC6 hr

The nearest sounding before it

Springfield, MO (KSGF), launched 12:00Z, 11.0 hours before the alert went out and 205 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-pSkew-T log-p diagram, Springfield, MO at 12:00Z on 2012-04-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 31 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Springfield, MO at 12:00Z on 2012-04-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 319 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
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
31 J/kg
Mixed-layer CIN
-142 J/kg
Mixed-layer LCL
855 m above ground
0-6 km bulk shear
55 kt
0-1 km storm-relative helicity
319 m²/s²
0-3 km storm-relative helicity
381 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.

345 
WFUS54 KLZK 152301
TORLZK
ARC023-029-045-141-152330-
/O.NEW.KLZK.TO.W.0021.120415T2301Z-120415T2330Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE LITTLE ROCK AR
601 PM CDT SUN APR 15 2012

THE NATIONAL WEATHER SERVICE IN LITTLE ROCK HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHEASTERN VAN BUREN COUNTY IN NORTH CENTRAL ARKANSAS...
  NORTH CENTRAL FAULKNER COUNTY IN CENTRAL ARKANSAS...
  NORTHEASTERN CONWAY COUNTY IN CENTRAL ARKANSAS...
  WESTERN CLEBURNE COUNTY IN NORTH CENTRAL ARKANSAS...

* UNTIL 630 PM CDT

* AT 558 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO.  THIS SEVERE
  STORM WAS LOCATED NEAR TWIN GROVES...OR 16 MILES SOUTH OF CLINTON.
  DOPPLER RADAR SHOWED THIS SEVERE STORM MOVING NORTHEAST AT 55 MPH.

* LOCATIONS IN THE PATH OF THIS DANGEROUS STORM INCLUDE...
  GREERS FERRY LAKE...  FAIRFIELD BAY...      WHIPPLE...
  TWIN GROVES...        GUY...                GREERS FERRY...
  FAIRFIELD BAY MARINA...                     FAIRBANKS...
  DAMASCUS...           CHOCTAW REC AREA...   WOODROW...
  SOUTHSIDE...          PRIM...               PEARSON...
  MORGANTON...          MARTINVILLE...        HIGDEN...
  BROWNSVILLE...

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 3571 9215 3571 9208 3558 9193 3525 9242
      3538 9257 3572 9216
TIME...MOT...LOC 2301Z 227DEG 40KT 3538 9240

$$

46
1 follow-up statement
787 
WWUS54 KLZK 152313
SVSLZK

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LITTLE ROCK AR
613 PM CDT SUN APR 15 2012

ARC029-045-152322-
/O.CAN.KLZK.TO.W.0021.000000T0000Z-120415T2330Z/
CONWAY AR-FAULKNER AR-
613 PM CDT SUN APR 15 2012

...THE TORNADO WARNING FOR NORTH CENTRAL FAULKNER AND NORTHEASTERN
CONWAY COUNTIES IS CANCELLED...

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

&&

LAT...LON 3561 9196 3559 9195 3537 9230 3548 9240
      3571 9213 3571 9207
TIME...MOT...LOC 2312Z 226DEG 40KT 3547 9228

$$

ARC023-141-152330-
/O.CON.KLZK.TO.W.0021.000000T0000Z-120415T2330Z/
CLEBURNE AR-VAN BUREN AR-
613 PM CDT SUN APR 15 2012

...A TORNADO WARNING REMAINS IN EFFECT FOR SOUTHEASTERN VAN BUREN AND
NORTHWESTERN CLEBURNE COUNTIES UNTIL 630 PM CDT...

AT 610 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO.  THIS 
STORM WAS LOCATED 2 MILES NORTHWEST OF FAIRBANKS...OR NEAR 
MORGANTON...MOVING NORTHEAST AT 55 MPH.

* LOCATIONS IN OR NEAR THE PATH OF THIS DANGEROUS STORM INCLUDE...
  GREERS FERRY LAKE...  GREERS FERRY...       FAIRBANKS...
  WOODROW...            PRIM...               MORGANTON...
  HIGDEN...             BROWNSVILLE...        WHISPERING SPGS...
  TANNENBAUM...         SUNNY SLOPE...       
  SUGAR LOAF REC AREA...                      SUGAR LOAF MTN...
  SHILOH REC AREA...    SCOUT ISLAND...       POST OAK...
  NARROWS REC AREA...   NARROWS MARINA...

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 3561 9196 3559 9195 3537 9230 3548 9240
      3571 9213 3571 9207
TIME...MOT...LOC 2312Z 226DEG 40KT 3547 9228

$$

46

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 15, 1:30 PM CDTSpecial Weather StatementLZKLogan, Scott45 min
Apr 15, 3:01 PM CDTSpecial Weather StatementLZKJohnson, Newton44 min
Apr 15, 3:10 PM CDTSpecial Weather StatementLZKMontgomery30 min
Apr 15, 3:47 PM CDTSpecial Weather StatementLZKMarion43 min
Apr 15, 3:56 PM CDTSpecial Weather StatementLZKMontgomery44 min
Apr 15, 4:02 PM CDTSpecial Weather StatementLZKNewton43 min
Apr 15, 4:11 PM CDTSevere Thunderstorm WarningLZKClark, Garland, Hot Spring, Montgomery, Perry, Pike and 1 more40 min
Apr 15, 4:16 PM CDTSevere Thunderstorm WarningLZKBaxter, Marion14 min
Apr 15, 4:36 PM CDTSpecial Weather StatementLZKMarion44 min
Apr 15, 5:13 PM CDTSpecial Weather StatementLZKGarland, Perry47 min
Apr 15, 5:19 PM CDTSpecial Weather StatementLZKConway, Perry, Van Buren46 min
Apr 15, 5:34 PM CDTSevere Thunderstorm WarningLZKCleburne, Conway, Faulkner, Perry, Pope, Van Buren41 min
Apr 15, 6:11 PM CDTSpecial Weather StatementLZKGarland, Perry44 min
Apr 15, 6:34 PM CDTSevere Thunderstorm WarningLZKCleburne, Independence, Izard, Sharp, Stone41 min
Apr 15, 6:38 PM CDTSevere Thunderstorm WarningLZKConway, Faulkner, Perry, Saline37 min
Apr 15, 6:38 PM CDTSevere Thunderstorm WarningLZKGrant, Lonoke, Pulaski, Saline25 min

Nearby

Tornado Warnings in Arkansas, 2012Every tornado warning in 2012Tornadoes in 2012

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.