Alert archive / Texas / Tornado Warnings in 2012

Tornado Warning 18, NWS Shreveport, LA

April 3, 2012Titus County, Texas

NWS Shreveport, LA issued this tornado warning at Apr 3, 2012, 3:38 PM CDT for Titus County, Texas. It was in force for 37 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, 3:38 PM CDT (20:38 UTC)
Expired: Apr 3, 2012, 4:15 PM CDT
In force: 37 min
Issued by: NWS Shreveport, LA
Area: Storm-based polygon

County Titus County, TX

The radar

The Shreveport radar (KSHV), 137 km from the middle of the area, began a volume at 20:39 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

Time	Report	Where	Remark
Apr 3, 3:43 PM CDT	HAIL 1	1 N Mount Pleasant, TX
Apr 3, 3:45 PM CDT	HAIL 1.75	Mount Pleasant, TX	GOLFBALL SIZED HAIL REPORTED BY PUBLIC.
Apr 3, 4:10 PM CDT	TORNADO	5 Ne Mount Pleasant, TX	TITUS COUNTY SHERIFF REPORTED WITNESSING A TORNADO TOUCH DOWN.

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.

Issued	Product	Office	Lasted
Apr 3, 2:36 PM CDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Shreveport, LA (KSHV), launched 12:00Z, 8.6 hours before the alert went out and 142 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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.

142 
WFUS54 KSHV 032038
TORSHV
TXC449-032115-
/O.NEW.KSHV.TO.W.0018.120403T2038Z-120403T2115Z/

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

THE NATIONAL WEATHER SERVICE IN SHREVEPORT HAS ISSUED A

* TORNADO WARNING FOR...
  TITUS COUNTY IN NORTHEAST TEXAS...
  THIS INCLUDES THE CITY OF MOUNT PLEASANT...

* UNTIL 415 PM CDT

* AT 337 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR MOUNT
  PLEASANT...MOVING NORTH AT 25 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  COOKVILLE AND WILKERSON. IF YOU LIVE IN MOUNT PLEASANT...TAKE 
  COVER IMMEDIATELY. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WARNING MEANS THAT STRONG ROTATION HAS BEEN DETECTED IN THE
STORM. A TORNADO MAY ALREADY BE ON THE GROUND...OR IS EXPECTED TO
DEVELOP SHORTLY. IF YOU ARE IN THE PATH OF THIS DANGEROUS STORM...
MOVE INDOORS AND TO THE LOWEST LEVEL OF THE BUILDING. STAY AWAY FROM
WINDOWS. IF DRIVING...DO NOT SEEK SHELTER UNDER A HIGHWAY OVERPASS.

&&

LAT...LON 3317 9513 3339 9504 3340 9500 3338 9494
      3339 9490 3336 9481 3322 9481 3307 9492
      3308 9498 3307 9504 3306 9506 3309 9513
TIME...MOT...LOC 2037Z 202DEG 16KT 3313 9501

$$

13

1 follow-up statement

334 
WWUS54 KSHV 032057
SVSSHV

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

TXC449-032115-
/O.CON.KSHV.TO.W.0018.000000T0000Z-120403T2115Z/
TITUS TX-
357 PM CDT TUE APR 3 2012

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 415 PM CDT FOR TITUS
COUNTY...

AT 356 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED
TO INDICATE ROTATION IN A THUNDERSTORM JUST NORTH OF MOUNT PLEASANT. 
THIS STORM WAS MOVING NORTH NORTHEAST NEAR 20 MPH. 

THE TORNADO WILL OTHERWISE REMAIN OVER MAINLY RURAL AREAS OF THE
INDICATED COUNTY.

LAT...LON 3338 9504 3340 9500 3338 9494 3339 9490
      3336 9481 3322 9481 3315 9494 3319 9503
TIME...MOT...LOC 2056Z 206DEG 18KT 3322 9496

$$

13

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 3, 3:27 PM CDT	Severe Thunderstorm Warning	SHV	Red River, Titus	63 min
Apr 3, 3:53 PM CDT	Tornado Warning	SHV	Red River	67 min
Apr 3, 4:07 PM CDT	Tornado Warning	SHV	Bowie, Morris, Red River, Titus	38 min
Apr 3, 4:29 PM CDT	Tornado Warning	SHV	Franklin, Red River, Titus	61 min
Apr 3, 4:40 PM CDT	Tornado Warning	SHV	Bowie, Red River	65 min
Apr 3, 4:55 PM CDT	Tornado Warning	SHV	Bowie, Red River	65 min
Apr 3, 5:24 PM CDT	Severe Thunderstorm Warning	SHV	Smith, Wood	66 min
Apr 3, 5:30 PM CDT	Tornado Warning	SHV	Bowie, Red River, Titus	60 min
Apr 3, 5:36 PM CDT	Severe Thunderstorm Warning	SHV	Bowie	54 min
Apr 3, 5:39 PM CDT	Tornado Warning	SHV	Camp, Franklin, Titus	66 min
Apr 3, 5:44 PM CDT	Severe Thunderstorm Warning	SHV	Bowie, Franklin, Morris, Red River, Titus	46 min
Apr 3, 6:01 PM CDT	Severe Thunderstorm Warning	SHV	Camp, Smith, Upshur, Wood	59 min
Apr 3, 6:10 PM CDT	Severe Thunderstorm Warning	SHV	Cherokee, Smith, Wood	65 min
Apr 3, 6:14 PM CDT	Severe Thunderstorm Warning	SHV	Bowie, Cass, Morris, Red River, Titus	61 min
Apr 3, 6:23 PM CDT	Severe Thunderstorm Warning	SHV	Cass	67 min
Apr 3, 6:52 PM CDT	Severe Thunderstorm Warning	SHV	Bowie, Cass, Gregg, Harrison, Marion, Upshur	53 min
Apr 3, 6:53 PM CDT	Tornado Warning	SHV	Cass	67 min
Apr 3, 6:54 PM CDT	Tornado Warning	SHV	Cass, Gregg, Harrison, Marion, Upshur	51 min

Nearby

Tornado Warnings in Texas, 2012 Every tornado warning in 2012 Tornadoes 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.