Alert archive / Texas / Tornado Warnings in 2012

Tornado Warning 22, NWS Shreveport, LA

April 3, 2012Bowie County, Red River County, Texas

NWS Shreveport, LA issued this tornado warning at Apr 3, 2012, 4:40 PM CDT for Bowie County, Red River County, Texas. It was in force for 65 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 3, 2012, 4:40 PM CDT (21:40 UTC)
Expired
Apr 3, 2012, 5:45 PM CDT
In force
65 min
Issued by
NWS Shreveport, LA
Area
Storm-based polygon

Counties Bowie County, TX, Red River County, TX

The radar

The Shreveport radar (KSHV), 144 km from the middle of the area, began a volume at 21:40 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 3, 4:44 PM CDTTORNADO8 Sw De Kalb, TXA TORNADO TOUCHED DOWN 8 MILES SW OF DE KALB TX...JUST WEST OF CR 4306 WHERE A FEW TREES WERE SNAPPED AND UPROOTED. THE TORNADO CROSSED CR 4306 AND CONTINUED ENE REMAINING OVER OPEN COUNTRY WHERE MORE TREES WERE SNAPPED AND UPROOTED. THE TORNADO LIFTED JUST WE
Apr 3, 5:00 PM CDTTSTM WND DMGDalby Springs, TXNUMEROUS TREES DOWN REPORTED DOWNED ALONG HIGHWAY 259.
Apr 3, 5:03 PM CDTHAIL 0.88De Kalb, TXSTORM SPOTTER REPORTES NICKEL SIZED HAIL IN DE KALB.

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 3, 2:36 PM CDTTornado WatchSPC7 hr

The nearest sounding before it

Shreveport, LA (KSHV), launched 12:00Z, 9.7 hours before the alert went out and 145 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 2012-04-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1328 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Shreveport, LA at 12:00Z on 2012-04-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 148 square meters per square second.193958Sfc1 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
1328 J/kg
Mixed-layer CIN
-64 J/kg
Mixed-layer LCL
475 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
148 m²/s²
0-3 km storm-relative helicity
286 m²/s²
Significant tornado parameter
0.0
Supercell composite
8.5

Open this sounding in Storm Lab

The text

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

592 
WFUS54 KSHV 032140
TORSHV
TXC037-387-032245-
/O.NEW.KSHV.TO.W.0022.120403T2140Z-120403T2245Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE SHREVEPORT LA
440 PM CDT TUE APR 3 2012

THE NATIONAL WEATHER SERVICE IN SHREVEPORT HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHWESTERN BOWIE COUNTY IN NORTHEAST TEXAS...
  SOUTHEASTERN RED RIVER COUNTY IN NORTHEAST TEXAS...

* UNTIL 545 PM CDT

* AT 440 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR DALBY
  SPRINGS...OR 10 MILES SOUTHEAST OF BOXELDER...MOVING NORTHEAST AT
  25 MPH. DAMAGE HAS BEEN REPORTED WITH THIS TORNADO EARLIER IN TITUS
  COUNTY. IF YOU LIVE IN SOUTHWEST BOWIE COUNTY OR IN THE DEKALB AREA...
  TAKE COVER IMMEDIATELY. 

LAT...LON 3366 9460 3367 9457 3364 9459 3365 9454
      3362 9456 3364 9453 3362 9453 3363 9450
      3354 9438 3352 9431 3332 9473 3332 9477
      3339 9484 3366 9467 3368 9462 3370 9464
TIME...MOT...LOC 2140Z 223DEG 20KT 3339 9475

$$

13
1 follow-up statement
531 
WWUS54 KSHV 032159
SVSSHV

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SHREVEPORT LA
459 PM CDT TUE APR 3 2012

TXC387-032208-
/O.CAN.KSHV.TO.W.0022.000000T0000Z-120403T2245Z/
RED RIVER TX-
459 PM CDT TUE APR 3 2012

...THE TORNADO WARNING FOR RED RIVER COUNTY IS CANCELLED...

LAT...LON 3368 9462 3370 9464 3366 9460 3367 9457
      3364 9459 3365 9455 3362 9456 3364 9453
      3362 9453 3363 9450 3355 9440 3352 9431
      3340 9466 3346 9474 3366 9467
TIME...MOT...LOC 2158Z 223DEG 20KT 3346 9467

$$

TXC037-032245-
/O.CON.KSHV.TO.W.0022.000000T0000Z-120403T2245Z/
BOWIE TX-
459 PM CDT TUE APR 3 2012

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 545 PM CDT FOR BOWIE
COUNTY...

AT 458 PM CDT...TRAINED WEATHER SPOTTERS CONTINUED TO REPORT STRONG
ROTATION WITH THE STORM JUST SOUTHWEST OF DEKALB...MOVING NORTHEAST 
NEAR 25 MPH. IF YOU LIVE IN DEKALB...TAKE COVER IMMEDIATELY. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER IN A NEARBY REINFORCED
BUILDING. AS A LAST RESORT...SEEK SHELTER IN A CULVERT...DITCH OR LOW
SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

&&

LAT...LON 3368 9462 3370 9464 3366 9460 3367 9457
      3364 9459 3365 9455 3362 9456 3364 9453
      3362 9453 3363 9450 3355 9440 3352 9431
      3340 9466 3346 9474 3366 9467
TIME...MOT...LOC 2158Z 223DEG 20KT 3346 9467

$$

13

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 3, 3:27 PM CDTSevere Thunderstorm WarningSHVRed River, Titus63 min
Apr 3, 3:38 PM CDTTornado WarningSHVTitus37 min
Apr 3, 3:53 PM CDTTornado WarningSHVRed River67 min
Apr 3, 4:07 PM CDTTornado WarningSHVBowie, Morris, Red River, Titus38 min
Apr 3, 4:29 PM CDTTornado WarningSHVFranklin, Red River, Titus61 min
Apr 3, 4:55 PM CDTTornado WarningSHVBowie, Red River65 min
Apr 3, 5:24 PM CDTSevere Thunderstorm WarningSHVSmith, Wood66 min
Apr 3, 5:30 PM CDTTornado WarningSHVBowie, Red River, Titus60 min
Apr 3, 5:36 PM CDTSevere Thunderstorm WarningSHVBowie54 min
Apr 3, 5:39 PM CDTTornado WarningSHVCamp, Franklin, Titus66 min
Apr 3, 5:44 PM CDTSevere Thunderstorm WarningSHVBowie, Franklin, Morris, Red River, Titus46 min
Apr 3, 6:01 PM CDTSevere Thunderstorm WarningSHVCamp, Smith, Upshur, Wood59 min
Apr 3, 6:10 PM CDTSevere Thunderstorm WarningSHVCherokee, Smith, Wood65 min
Apr 3, 6:14 PM CDTSevere Thunderstorm WarningSHVBowie, Cass, Morris, Red River, Titus61 min
Apr 3, 6:23 PM CDTSevere Thunderstorm WarningSHVCass67 min
Apr 3, 6:52 PM CDTSevere Thunderstorm WarningSHVBowie, Cass, Gregg, Harrison, Marion, Upshur53 min
Apr 3, 6:53 PM CDTTornado WarningSHVCass67 min
Apr 3, 6:54 PM CDTTornado WarningSHVCass, Gregg, Harrison, Marion, Upshur51 min

Nearby

Tornado Warnings in Texas, 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.