Alert archive / Arkansas / Tornado Warnings in 2011

Tornado Warning 43, NWS Memphis, TN

April 19, 2011Craighead County, Cross County, Poinsett County, Arkansas

NWS Memphis, TN issued this tornado warning at Apr 19, 2011, 11:54 PM CDT for Craighead County, Cross County, Poinsett County, Arkansas. It was in force for 35 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 19, 2011, 11:54 PM CDT (04:54 UTC)
Expired
Apr 20, 2011, 12:29 AM CDT
In force
35 min
Issued by
NWS Memphis, TN
Area
Storm-based polygon

Counties Craighead County, AR, Cross County, AR, Poinsett County, AR

The radar

The Memphis radar (KNQA), 79 km from the middle of the area, began a volume at 04:56 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.

IssuedProductOfficeLasted
Apr 19, 6:46 PM CDTTornado WatchSPC9 hr

The nearest sounding before it

Little Rock, AR (KLZK), launched 00:00Z, 4.9 hours before the alert went out and 102 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, Little Rock, AR at 00:00Z on 2011-04-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1605 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, Little Rock, AR at 00:00Z on 2011-04-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 173 square meters per square second.19395878Sfc1 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
1605 J/kg
Mixed-layer CIN
-56 J/kg
Mixed-layer LCL
2015 m above ground
0-6 km bulk shear
41 kt
0-1 km storm-relative helicity
173 m²/s²
0-3 km storm-relative helicity
208 m²/s²
Significant tornado parameter
0.0
Supercell composite
10.6

Open this sounding in Storm Lab

The text

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

606 
WFUS54 KMEG 200454
TORMEG
ARC031-037-111-200545-
/O.NEW.KMEG.TO.W.0043.110420T0454Z-110420T0545Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE MEMPHIS TN
1154 PM CDT TUE APR 19 2011

THE NATIONAL WEATHER SERVICE IN MEMPHIS HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTH CENTRAL CRAIGHEAD COUNTY IN EASTERN ARKANSAS...
  NORTHWESTERN CROSS COUNTY IN EASTERN ARKANSAS...
  POINSETT COUNTY IN EASTERN ARKANSAS...

* UNTIL 1245 AM CDT

* AT 1155 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM PRODUCING A TORNADO NEAR FAIR OAKS...OR 10
  MILES EAST OF MCCRORY...MOVING NORTHEAST AT 45 MPH.

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  HARRISBURG...MARKED TREE AND TRUMANN.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

.THE SAFEST PLACE TO BE DURING A TORNADO IS IN A STORM SHELTER. IF NO
STORM SHELTER IS AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE
BUILDING IN AN INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE
BLANKETS OR PILLOWS TO COVER YOUR BODY AND ALWAYS STAY AWAY FROM
WINDOWS.

IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A
SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE
NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

.TORNADOES ARE DIFFICULT TO SEE AND CONFIRM AT NIGHT. TAKE COVER NOW.

&&

LAT...LON 3576 9048 3556 9031 3520 9102 3524 9105
      3541 9105
TIME...MOT...LOC 0455Z 235DEG 37KT 3533 9098

$$
2 follow-up statements
469 
WWUS54 KMEG 200522
SVSMEG

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MEMPHIS TN
1222 AM CDT WED APR 20 2011

ARC031-200532-
/O.CAN.KMEG.TO.W.0043.000000T0000Z-110420T0545Z/
CRAIGHEAD AR-
1222 AM CDT WED APR 20 2011

...THE TORNADO WARNING FOR SOUTH CENTRAL CRAIGHEAD COUNTY IS
CANCELLED...

AT 1222 AM CDT...WEATHER SERVICE DOPPLER RADAR INDICATED THAT THE 
THUNDERSTORMS WHICH PROMPTED THE WARNING HAVE MOVED OUT OF THE AREA 
...AND NO LONGER POSE AN IMMEDIATE THREAT TO LIFE OR PROPERTY. 
THEREFORE...THE TORNADO WARNING IS CANCELLED.

LAT...LON 3528 9101 3547 9095 3553 9086 3561 9054
      3552 9039 3539 9065
TIME...MOT...LOC 0522Z 235DEG 37KT 3549 9070

$$

ARC037-111-200545-
/O.CON.KMEG.TO.W.0043.000000T0000Z-110420T0545Z/
CROSS AR-POINSETT AR-
1222 AM CDT WED APR 20 2011

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1245 AM CDT FOR SOUTHERN
POINSETT AND NORTHWESTERN CROSS COUNTIES...

AT 1222 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A TORNADO.  THIS TORNADO WAS LOCATED NEAR WILEY CROSSING...
OR 7 MILES SOUTH OF HARRISBURG...MOVING NORTHEAST AT 45 MPH.

LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO HARRISBURG...
MARKED TREE...SUPPLY...HYDRICK...BRUSHY LAKE...WILEY CROSSING...
WHITAKER...LANDERS...WEONA...OLD WEONA...WEONA JUNCTION...BAY
VILLAGE...STEWART AND BOAT RUN.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THE SAFEST PLACE TO BE DURING A TORNADO IS IN A STORM SHELTER. IF NO
STORM SHELTER IS AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE
BUILDING IN AN INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE
BLANKETS OR PILLOWS TO COVER YOUR BODY AND ALWAYS STAY AWAY FROM
WINDOWS.

IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A
SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE
NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

.TORNADOES ARE DIFFICULT TO SEE AND CONFIRM AT NIGHT. TAKE COVER NOW.

&&

LAT...LON 3528 9101 3547 9095 3553 9086 3561 9054
      3552 9039 3539 9065
TIME...MOT...LOC 0522Z 235DEG 37KT 3549 9070

$$
692 
WWUS54 KMEG 200529
SVSMEG

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MEMPHIS TN
1229 AM CDT WED APR 20 2011

ARC037-111-200539-
/O.CAN.KMEG.TO.W.0043.000000T0000Z-110420T0545Z/
CROSS AR-POINSETT AR-
1229 AM CDT WED APR 20 2011

...THE TORNADO WARNING FOR SOUTHERN POINSETT AND NORTH CENTRAL CROSS
COUNTIES IS CANCELLED...

AT 1229 AM CDT...WEATHER SERVICE DOPPLER RADAR INDICATED THAT THE 
THUNDERSTORMS WHICH PROMPTED THE WARNING HAVE MOVED OUT OF THE AREA 
...AND NO LONGER POSE AN IMMEDIATE THREAT TO LIFE OR PROPERTY. 
THEREFORE...THE TORNADO WARNING IS CANCELLED.

.A TORNADO WATCH ALSO REMAINS IN EFFECT FOR THE ALERT AREA.

LAT...LON 3528 9101 3547 9095 3553 9086 3561 9054
      3552 9039 3539 9065
TIME...MOT...LOC 0529Z 235DEG 37KT 3552 9061

$$

The office that day

Everything else NWS Memphis, TN issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 19, 7:27 PM CDTSevere Thunderstorm WarningMEGLawrence, Randolph63 min
Apr 19, 8:11 PM CDTSevere Thunderstorm WarningMEGClay, Greene, Lawrence, Randolph64 min
Apr 19, 8:38 PM CDTSevere Thunderstorm WarningMEGCraighead, Greene, Lawrence, Poinsett67 min
Apr 19, 8:46 PM CDTSevere Thunderstorm WarningMEGClay, Greene59 min
Apr 19, 8:57 PM CDTTornado WarningMEGCraighead, Greene, Lawrence33 min
Apr 19, 9:13 PM CDTSevere Thunderstorm WarningMEGClay, Craighead, Greene, Mississippi47 min
Apr 19, 9:24 PM CDTTornado WarningMEGClay, Greene36 min
Apr 19, 9:38 PM CDTSevere Thunderstorm WarningMEGCross, Lee, Phillips, Poinsett, St. Francis52 min
Apr 19, 9:40 PM CDTSevere Thunderstorm WarningMEGCraighead, Greene, Poinsett50 min
Apr 19, 9:43 PM CDTSevere Thunderstorm WarningMEGLee, Phillips47 min
Apr 19, 9:48 PM CDTTornado WarningMEGCraighead, Poinsett27 min
Apr 19, 9:52 PM CDTSevere Thunderstorm WarningMEGClay, Craighead, Greene, Mississippi, Poinsett53 min
Apr 19, 9:55 PM CDTTornado WarningMEGClay, Greene35 min
Apr 19, 10:07 PM CDTTornado WarningMEGCraighead, Greene, Mississippi, Poinsett38 min
Apr 19, 10:21 PM CDTFlash Flood WarningMEGClay, Craighead, Cross, Greene, Mississippi, Poinsett3 hr
Apr 19, 10:22 PM CDTSevere Thunderstorm WarningMEGCrittenden, Cross, Lee, Phillips, St. Francis38 min
Apr 19, 10:27 PM CDTSevere Thunderstorm WarningMEGMississippi, Poinsett63 min
Apr 19, 10:30 PM CDTTornado WarningMEGMississippi45 min
Apr 19, 10:42 PM CDTTornado WarningMEGCrittenden, Mississippi, Poinsett34 min
Apr 19, 10:52 PM CDTTornado WarningMEGMississippi23 min
Apr 19, 10:54 PM CDTTornado WarningMEGMississippi31 min
Apr 19, 10:59 PM CDTSevere Thunderstorm WarningMEGLee, Phillips46 min
Apr 19, 11:40 PM CDTSevere Thunderstorm WarningMEGCross, Poinsett50 min
Apr 20, 12:04 AM CDTSevere Thunderstorm WarningMEGCraighead, Greene, Poinsett41 min
Apr 20, 12:17 AM CDTSevere Thunderstorm WarningMEGCrittenden, Cross, Mississippi, Poinsett43 min
Apr 20, 12:29 AM CDTSevere Thunderstorm WarningMEGCrittenden, Cross, Mississippi, Poinsett46 min
Apr 20, 12:47 AM CDTSevere Thunderstorm WarningMEGCrittenden, Cross, Lee, St. Francis43 min
Apr 20, 12:52 AM CDTSevere Thunderstorm WarningMEGCrittenden, Cross, Mississippi, Poinsett38 min
Apr 20, 12:55 AM CDTSevere Thunderstorm WarningMEGLee, Phillips50 min
Apr 20, 12:57 AM CDTSevere Thunderstorm WarningMEGPhillips48 min
Apr 20, 1:07 AM CDTFlash Flood WarningMEGCrittenden, Cross, Mississippi, Poinsett3 hr
Apr 20, 1:23 AM CDTSevere Thunderstorm WarningMEGCrittenden, Cross, Mississippi, Poinsett, St. Francis36 min
Apr 20, 1:39 AM CDTSevere Thunderstorm WarningMEGPhillips51 min
Apr 20, 1:45 AM CDTSevere Thunderstorm WarningMEGCrittenden, Mississippi45 min
Apr 20, 3:18 AM CDTFlash Flood WatchMEGCrittenden, Cross, Lee, Phillips, St. Francis30 hr
Apr 20, 4:10 PM CDTSevere Thunderstorm WarningMEGLee, Phillips65 min
Apr 20, 4:51 PM CDTSevere Thunderstorm WarningMEGLee, Phillips54 min
Apr 20, 4:54 PM CDTFlash Flood WarningMEGLee, Phillips, St. Francis7 hr
Apr 20, 6:23 PM CDTFlash Flood WarningMEGCrittenden, Lee5 hr

Nearby

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