Alert archive / Arkansas / Tornado Warnings in 2016

Tornado Warning 25, NWS Shreveport, LA

April 11, 20166 counties in Arkansas

NWS Shreveport, LA issued this tornado warning at Apr 11, 2016, 12:40 PM CDT for 6 counties in Arkansas. It was in force for 50 min. 3 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 11, 2016, 12:40 PM CDT (17:40 UTC)
Expired
Apr 11, 2016, 1:30 PM CDT
In force
50 min
Issued by
NWS Shreveport, LA
Area
Storm-based polygon
Tornado
Radar indicated
Hail
1.0 in

Counties Columbia County, AR, Hempstead County, AR, Lafayette County, AR, Miller County, AR, Nevada County, AR, Union County, AR

The radar

The Shreveport radar (KSHV), 119 km from the middle of the area, began a volume at 17:42 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.

What was reported inside it

TimeReportWhereRemark
Apr 11, 12:45 PM CDTTSTM WND DMG4 S Lewisville, ARTREE DOWN ON A HOUSE OFF OF COUNTY ROAD 18 SOUTH OF LEWISVILLE. TREES AND POWER LINES WERE ALSO DOWNED ACROSS LAFAYETTE COUNTY.
Apr 11, 12:58 PM CDTTSTM WND DMG3 W Waldo, ARTREE ACROSS HIGHWAY 82 JUST INSIDE THE COUNTY LINE
Apr 11, 1:10 PM CDTTSTM WND DMGGarland, ARSEVERAL TREES AND POWERLINES DOWN ACROSS THE EASTER PART OF THE COUNTY.

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

The nearest sounding before it

Shreveport, LA (KBAD), launched 12:00Z, 5.7 hours before the alert went out and 112 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, Shreveport, LA at 12:00Z on 2016-04-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 520 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Shreveport, LA at 12:00Z on 2016-04-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 270 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
520 J/kg
Mixed-layer CIN
-128 J/kg
Mixed-layer LCL
585 m above ground
0-6 km bulk shear
37 kt
0-1 km storm-relative helicity
270 m²/s²
0-3 km storm-relative helicity
389 m²/s²
Significant tornado parameter
0.4
Supercell composite
4.2

Open this sounding in Storm Lab

The text

As transmitted.

847 
WFUS54 KSHV 111740
TORSHV
ARC027-057-073-091-099-139-111830-
/O.NEW.KSHV.TO.W.0025.160411T1740Z-160411T1830Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE SHREVEPORT LA
1240 PM CDT MON APR 11 2016

THE NATIONAL WEATHER SERVICE IN SHREVEPORT HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHERN COLUMBIA COUNTY IN SOUTHWESTERN ARKANSAS...
  NORTHEASTERN LAFAYETTE COUNTY IN SOUTHWESTERN ARKANSAS...
  EAST CENTRAL MILLER COUNTY IN SOUTHWESTERN ARKANSAS...
  SOUTHERN NEVADA COUNTY IN SOUTHWESTERN ARKANSAS...
  SOUTHEASTERN HEMPSTEAD COUNTY IN SOUTHWESTERN ARKANSAS...
  NORTHWESTERN UNION COUNTY IN SOUTH CENTRAL ARKANSAS...

* UNTIL 130 PM CDT
    
* AT 1240 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A
  TORNADO WAS LOCATED OVER GARLAND...OR NEAR LEWISVILLE...MOVING EAST
  AT 60 MPH.

  HAZARD...TORNADO AND QUARTER SIZE HAIL. 

  SOURCE...RADAR INDICATED ROTATION. 

  IMPACT...FLYING DEBRIS WILL BE DANGEROUS TO THOSE CAUGHT WITHOUT 
           SHELTER. MOBILE HOMES WILL BE DAMAGED OR DESTROYED. 
           DAMAGE TO ROOFS...WINDOWS...AND VEHICLES WILL OCCUR.  TREE 
           DAMAGE IS LIKELY. 

* THIS DANGEROUS STORM WILL BE NEAR...
  LEWISVILLE AROUND 1245 PM CDT. 
  STAMPS AROUND 1250 PM CDT. 
  BUCKNER AROUND 1255 PM CDT. 
  WALDO AROUND 100 PM CDT. 
  WILLISVILLE AROUND 105 PM CDT. 

OTHER LOCATIONS IMPACTED BY THIS TORNADIC THUNDERSTORM INCLUDE
FALCON...YOUNG...PINEY GROVE...MEDLOCK...BETHEL...LAMARTINE...MOUNT VERNON...
LAUGHLIN...COLLEGE HILL AND SPIRIT LAKE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3338 9312 3338 9296 3334 9294 3324 9373
      3341 9380 3368 9311
TIME...MOT...LOC 1740Z 251DEG 50KT 3335 9368 

TORNADO...RADAR INDICATED
HAIL...1.00IN

$$

05
1 follow-up statement
956 
WWUS54 KSHV 111802
SVSSHV

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SHREVEPORT LA
102 PM CDT MON APR 11 2016

ARC057-091-099-139-111811-
/O.CAN.KSHV.TO.W.0025.000000T0000Z-160411T1830Z/
MILLER AR-NEVADA AR-HEMPSTEAD AR-UNION AR-
102 PM CDT MON APR 11 2016

...THE TORNADO WARNING FOR EAST CENTRAL MILLER...SOUTHERN NEVADA...
SOUTHEASTERN HEMPSTEAD AND NORTHWESTERN UNION COUNTIES IS
CANCELLED...
    
THE TORNADIC THUNDERSTORM WHICH PROMPTED THE WARNING HAS MOVED OUT
OF THE WARNED AREA THEREFORE THE WARNING HAS BEEN CANCELLED.

LAT...LON 3332 9312 3326 9354 3341 9351 3344 9312
TIME...MOT...LOC 1801Z 251DEG 50KT 3345 9335 

$$

ARC027-073-111830-
/O.CON.KSHV.TO.W.0025.000000T0000Z-160411T1830Z/
COLUMBIA AR-LAFAYETTE AR-
102 PM CDT MON APR 11 2016

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 130 PM CDT FOR
NORTHWESTERN COLUMBIA AND NORTHEASTERN LAFAYETTE COUNTIES...
    
AT 101 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO
WAS LOCATED NEAR WILLISVILLE...OR 7 MILES NORTHWEST OF WALDO...MOVING
EAST AT 60 MPH.

HAZARD...TORNADO AND QUARTER SIZE HAIL. 

SOURCE...RADAR INDICATED ROTATION. 

IMPACT...FLYING DEBRIS WILL BE DANGEROUS TO THOSE CAUGHT WITHOUT 
         SHELTER. MOBILE HOMES WILL BE DAMAGED OR DESTROYED. DAMAGE 
         TO ROOFS...WINDOWS...AND VEHICLES WILL OCCUR.  TREE DAMAGE IS 
         LIKELY. 

THIS TORNADIC THUNDERSTORM WILL REMAIN OVER MAINLY RURAL AREAS OF
NORTHWESTERN COLUMBIA AND NORTHEASTERN LAFAYETTE COUNTIES...INCLUDING
THE FOLLOWING LOCATIONS: BETHEL...MOUNT VERNON...LAMARTINE...COLLEGE
HILL...LAUGHLIN AND MCKAMIE.

LAT...LON 3332 9312 3326 9354 3341 9351 3344 9312
TIME...MOT...LOC 1801Z 251DEG 50KT 3345 9335 

TORNADO...RADAR INDICATED
HAIL...1.00IN

$$

05

The office that day

Everything else NWS Shreveport, LA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 11, 9:03 AM CDTSpecial Weather StatementSHVPolk27 min
Apr 11, 10:14 AM CDTSpecial Weather StatementSHVHoward, Sevier46 min
Apr 11, 10:51 AM CDTSevere Thunderstorm WarningSHVLittle River, Miller, Sevier39 min
Apr 11, 11:57 AM CDTSpecial Weather StatementSHVHempstead, Nevada48 min
Apr 11, 12:02 PM CDTSevere Thunderstorm WarningSHVHempstead, Lafayette, Little River, Miller, Nevada58 min
Apr 11, 12:31 PM CDTSpecial Weather StatementSHVColumbia, Lafayette, Miller29 min
Apr 11, 1:04 PM CDTSpecial Weather StatementSHVNevada26 min
Apr 11, 1:16 PM CDTSpecial Weather StatementSHVColumbia, Union44 min
Apr 11, 1:26 PM CDTTornado WarningSHVColumbia, Union49 min
Apr 11, 2:11 PM CDTSevere Thunderstorm WarningSHVUnion49 min
Apr 11, 4:44 PM CDTSevere Thunderstorm WarningSHVLittle River, Sevier61 min
Apr 11, 5:22 PM CDTFlash Flood WarningSHVColumbia, Union6 hr
Apr 11, 5:35 PM CDTSevere Thunderstorm WarningSHVUnion42 min
Apr 11, 6:03 PM CDTSevere Thunderstorm WarningSHVHempstead, Nevada45 min

Nearby

Tornado Warnings in Arkansas, 2016Every tornado warning in 2016Tornadoes in 2016

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.