Alert archive / Texas / Tornado Warnings in 2011

Tornado Warning 23, NWS Shreveport, LA

April 25, 20114 counties in Texas

NWS Shreveport, LA issued this tornado warning at Apr 25, 2011, 3:30 PM CDT for 4 counties in Texas. It was in force for 45 min. 4 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 25, 2011, 3:30 PM CDT (20:30 UTC)
Expired: Apr 25, 2011, 4:15 PM CDT
In force: 45 min
Issued by: NWS Shreveport, LA
Area: Storm-based polygon

Counties Cherokee County, TX, Gregg County, TX, Rusk County, TX, Smith County, TX

The radar

The Shreveport radar (KSHV), 92 km from the middle of the area, began a volume at 20:33 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 25, 3:32 PM CDT	TORNADO	9 Nne Jacksonville, TX	AN EF1 TORNADO SNAPPED MULTIPLE TREES ALONG AN 8 MILE TRACK JUST SOUTH OF THE SMITH/CHEROKEE COUNTY LINE. THE TORNADO TOUCHED DOWN 6 MILES SOUTHWEST OF TROUP ON HWY. 135 AND CONTINUED NORTHEAST CROSSING HWY. 110 BEFORE ENDING JUST NORTH OF FM. 13. A SMALL OUTB
Apr 25, 3:35 PM CDT	HAIL 1.75	Troup, TX
Apr 25, 3:36 PM CDT	TORNADO	1 Sw Troup, TX	DPS OFFICER REPORTING BRIEF TORNADO TOUCHDOWN NEAR TROUP
Apr 25, 3:38 PM CDT	TORNADO	1 Se Troup, TX	LAW ENFORCEMENT REPORTING TREES DOWN ON FM 13 SOUTHEAST OF TROUP.

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 25, 11:00 AM CDT	Tornado Watch	SPC	7 hr
Apr 25, 2:41 PM CDT	Tornado Watch	SPC	9 hr
Apr 25, 3:22 PM CDT	Tornado Watch PDS	SPC	8 hr

The nearest sounding before it

Shreveport, LA (KSHV), launched 12:00Z, 8.5 hours before the alert went out and 101 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: 1213 J/kg
Mixed-layer CIN: -34 J/kg
Mixed-layer LCL: 759 m above ground
0-6 km bulk shear: 44 kt
0-1 km storm-relative helicity: 231 m²/s²
0-3 km storm-relative helicity: 491 m²/s²
Significant tornado parameter: 2.2
Supercell composite: 11.5

Open this sounding in Storm Lab

The text

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

957 
WFUS54 KSHV 252030
TORSHV
TXC073-183-401-423-252115-
/O.NEW.KSHV.TO.W.0023.110425T2030Z-110425T2115Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE SHREVEPORT LA
330 PM CDT MON APR 25 2011

THE NATIONAL WEATHER SERVICE IN SHREVEPORT HAS ISSUED A

* TORNADO WARNING FOR...
  NORTH CENTRAL CHEROKEE COUNTY IN NORTHEAST TEXAS...
  SOUTHERN GREGG COUNTY IN NORTHEAST TEXAS...
  THIS INCLUDES THE CITIES OF...LONGVIEW...KILGORE...
  NORTHERN RUSK COUNTY IN NORTHEAST TEXAS...
  THIS INCLUDES THE CITY OF HENDERSON...
  SOUTHEASTERN SMITH COUNTY IN NORTHEAST TEXAS...

* UNTIL 415 PM CDT

* AT 325 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR MIXON...OR
  9 MILES NORTH OF JACKSONVILLE...MOVING NORTHEAST AT 45 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  TROUP...ARP...TURNERTOWN...OVERTON...JOINERVILLE AND NEW LONDON...

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 3255 9476 3245 9470 3243 9470 3242 9468
      3223 9456 3220 9458 3198 9521 3215 9530
TIME...MOT...LOC 2030Z 245DEG 40KT 3211 9515

$$

ELEVEN

2 follow-up statements

802 
WWUS54 KSHV 252050
SVSSHV

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SHREVEPORT LA
350 PM CDT MON APR 25 2011

TXC073-423-252100-
/O.CAN.KSHV.TO.W.0023.000000T0000Z-110425T2115Z/
SMITH TX-CHEROKEE TX-
350 PM CDT MON APR 25 2011

...THE TORNADO WARNING FOR CHEROKEE AND SMITH COUNTIES IS
CANCELLED...

LAT...LON 3255 9476 3245 9470 3243 9470 3242 9468
      3223 9456 3220 9458 3206 9498 3238 9499
TIME...MOT...LOC 2050Z 245DEG 40KT 3220 9491

$$

TXC183-401-252115-
/O.CON.KSHV.TO.W.0023.000000T0000Z-110425T2115Z/
GREGG TX-RUSK TX-
350 PM CDT MON APR 25 2011

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 415 PM CDT FOR RUSK AND
GREGG COUNTIES...

AT 346 PM CDT...USING DOPPLER RADAR...NATIONAL WEATHER SERVICE
METEOROLOGISTS CONTINUED TO DETECT A TORNADO.  THIS TORNADO WAS
LOCATED NEAR TURNERTOWN...OR 10 MILES WEST OF HENDERSON...MOVING
NORTHEAST AT 45 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO NEW
LONDON...LAIRD HILL...KILGORE...ROLLING MEADOWS...CHURCH HILL...OAK
HILL...MONROE...LAKEPORT...STEWART...LONGVIEW AND CHALK HILL

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 3255 9476 3245 9470 3243 9470 3242 9468
      3223 9456 3220 9458 3206 9498 3238 9499
TIME...MOT...LOC 2050Z 245DEG 40KT 3220 9491

$$

ELEVEN

604 
WWUS54 KSHV 252108
SVSSHV

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SHREVEPORT LA
408 PM CDT MON APR 25 2011

TXC183-401-252118-
/O.EXP.KSHV.TO.W.0023.000000T0000Z-110425T2115Z/
GREGG TX-RUSK TX-
408 PM CDT MON APR 25 2011

...THE TORNADO WARNING FOR RUSK AND GREGG COUNTIES WILL EXPIRE AT 415
PM CDT...

LAT...LON 3255 9476 3245 9470 3243 9470 3242 9468
      3223 9456 3220 9458 3206 9498 3238 9499
TIME...MOT...LOC 2108Z 245DEG 40KT 3228 9469

$$

ELEVEN

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 24, 7:33 PM CDT	Lake Wind Advisory	SHV	Angelina, Camp, Cass, Cherokee, Franklin, Gregg and 13 more	87 min
Apr 24, 9:35 PM CDT	Severe Thunderstorm Warning	SHV	Red River	55 min
Apr 25, 12:09 AM CDT	Severe Thunderstorm Warning	SHV	Franklin, Red River, Titus	66 min
Apr 25, 12:41 AM CDT	Severe Thunderstorm Warning	SHV	Bowie, Red River, Titus	64 min
Apr 25, 3:48 AM CDT	Lake Wind Advisory	SHV	Angelina, Bowie, Camp, Cass, Cherokee, Franklin and 15 more	21 hr
Apr 25, 5:19 AM CDT	Severe Thunderstorm Warning	SHV	Red River	56 min
Apr 25, 6:14 AM CDT	Severe Thunderstorm Warning	SHV	Bowie, Red River	61 min
Apr 25, 12:11 PM CDT	Severe Thunderstorm Warning	SHV	Red River	49 min
Apr 25, 12:29 PM CDT	Flash Flood Warning	SHV	Red River	4 hr
Apr 25, 1:37 PM CDT	Severe Thunderstorm Warning	SHV	Red River	38 min
Apr 25, 1:48 PM CDT	Tornado Warning	SHV	Red River	27 min
Apr 25, 2:36 PM CDT	Severe Thunderstorm Warning	SHV	Camp, Smith, Upshur, Wood	54 min
Apr 25, 2:37 PM CDT	Severe Thunderstorm Warning	SHV	Bowie, Franklin, Red River, Titus	38 min
Apr 25, 2:55 PM CDT	Severe Thunderstorm Warning	SHV	Cherokee, Smith	50 min
Apr 25, 3:14 PM CDT	Severe Thunderstorm Warning	SHV	Bowie, Red River	46 min
Apr 25, 3:14 PM CDT	Tornado Warning	SHV	Camp, Cass, Harrison, Marion, Morris, Upshur	46 min
Apr 25, 3:49 PM CDT	Flash Flood Watch	SHV	Bowie, Camp, Cass, Franklin, Morris, Red River and 1 more	39 hr
Apr 25, 4:11 PM CDT	Severe Thunderstorm Warning	SHV	Harrison, Panola, Rusk	19 min
Apr 25, 4:39 PM CDT	Severe Thunderstorm Warning	SHV	Bowie, Camp, Franklin, Morris, Red River, Titus	51 min
Apr 25, 5:14 PM CDT	Tornado Warning	SHV	Bowie, Red River, Titus	31 min
Apr 25, 5:30 PM CDT	Severe Thunderstorm Warning	SHV	Bowie, Cass, Morris, Red River, Titus	45 min
Apr 25, 6:02 PM CDT	Severe Thunderstorm Warning	SHV	Bowie, Franklin, Red River, Titus	43 min
Apr 25, 6:15 PM CDT	Tornado Warning	SHV	Bowie	45 min
Apr 25, 6:24 PM CDT	Severe Thunderstorm Warning	SHV	Bowie, Camp, Franklin, Morris, Red River, Titus	36 min
Apr 25, 6:54 PM CDT	Severe Thunderstorm Warning	SHV	Bowie, Cass	51 min
Apr 25, 6:57 PM CDT	Severe Thunderstorm Warning	SHV	Bowie, Camp, Cass, Franklin, Marion, Morris and 3 more	48 min

Nearby

Tornado Warnings in Texas, 2011 Every tornado warning in 2011 Tornadoes 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.