Alert archive / Arkansas / Tornado Warnings in 2013

Tornado Warning 75, NWS Jackson, MS

December 21, 2013Ashley County, Arkansas

NWS Jackson, MS issued this tornado warning at Dec 21, 2013, 4:13 PM CST for Ashley County, Arkansas. It was in force for 32 min. 1 report 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
Dec 21, 2013, 4:13 PM CST (22:13 UTC)
Expired
Dec 21, 2013, 4:45 PM CST
In force
32 min
Issued by
NWS Jackson, MS
Area
Storm-based polygon

County Ashley County, AR

The radar

The Little Rock radar (KLZK), 174 km from the middle of the area, began a volume at 22:14 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
Dec 21, 4:15 PM CSTTSTM WND DMG6 W Hamburg, ARA FEW TREES DOWN ACROSS CO ROADS.

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
Dec 21, 9:46 AM CSTTornado WatchSPC8 hr

The nearest sounding before it

Shreveport, LA (KBAD), launched 12:00Z, 10.2 hours before the alert went out and 195 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 2013-12-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 992 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, Shreveport, LA at 12:00Z on 2013-12-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 322 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
992 J/kg
Mixed-layer CIN
-1 J/kg
Mixed-layer LCL
478 m above ground
0-6 km bulk shear
46 kt
0-1 km storm-relative helicity
322 m²/s²
0-3 km storm-relative helicity
360 m²/s²
Significant tornado parameter
1.7
Supercell composite
7.7

Open this sounding in Storm Lab

The text

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

687 
WFUS54 KJAN 212213
TORJAN
ARC003-212245-
/O.NEW.KJAN.TO.W.0075.131221T2213Z-131221T2245Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE JACKSON MS
413 PM CST SAT DEC 21 2013

THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A

* TORNADO WARNING FOR...
  NORTH CENTRAL ASHLEY COUNTY IN SOUTHEAST ARKANSAS...

* UNTIL 445 PM CST

* AT 409 PM CST...A TORNADO WAS INDICATED NEAR NORTH CROSSETT...AND
  MOVING NORTHEAST AT 65 MPH.

  HAZARD...TORNADO.

* THIS DANGEROUS STORM WILL BE NEAR...
  FOUNTAIN HILL AROUND 420 PM CST.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TO PROTECT YOUR LIFE...TAKE COVER NOW! MOVE TO A BASEMENT OR 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.

&&

A TORNADO WATCH REMAINS IN EFFECT UNTIL 600 PM CST SATURDAY EVENING
FOR SOUTHEAST ARKANSAS AND NORTHEAST LOUISIANA.

LAT...LON 3325 9207 3327 9205 3330 9198 3332 9198
      3340 9188 3340 9161 3339 9161 3314 9193
TIME...MOT...LOC 2213Z 226DEG 58KT 3324 9191

$$

BYB
1 follow-up statement
133 
WWUS54 KJAN 212245
SVSJAN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
445 PM CST SAT DEC 21 2013

ARC003-212255-
/O.EXP.KJAN.TO.W.0075.000000T0000Z-131221T2245Z/
ASHLEY AR-
445 PM CST SAT DEC 21 2013

...THE TORNADO WARNING FOR NORTHWESTERN ASHLEY COUNTY HAS EXPIRED...

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

A TORNADO WATCH REMAINS IN EFFECT UNTIL 600 PM CST SATURDAY EVENING
FOR SOUTHEAST ARKANSAS AND NORTHEAST LOUISIANA.

LAT...LON 3325 9207 3327 9205 3330 9198 3332 9198
      3340 9188 3340 9161 3339 9161 3314 9193
TIME...MOT...LOC 2245Z 226DEG 58KT 3360 9146

$$

BYB

The office that day

Everything else NWS Jackson, MS issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Dec 21, 3:55 PM CSTSevere Thunderstorm WarningJANAshley80 min
Dec 21, 4:09 PM CSTTornado WarningJANAshley36 min
Dec 21, 4:38 PM CSTSevere Thunderstorm WarningJANChicot52 min
Dec 21, 4:48 PM CSTTornado WarningJANChicot27 min
Dec 21, 5:06 PM CSTSevere Thunderstorm WarningJANChicot39 min

Nearby

Tornado Warnings in Arkansas, 2013Every tornado warning in 2013Tornadoes in 2013

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.