Alert archive / Texas / Tornado Warnings in 2013

Tornado Warning 13, NWS Shreveport, LA

February 18, 20134 counties in Texas

NWS Shreveport, LA issued this tornado warning at Feb 18, 2013, 5:26 PM CST for 4 counties in Texas. It was in force for 34 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: Feb 18, 2013, 5:26 PM CST (23:26 UTC)
Expired: Feb 18, 2013, 6:00 PM CST
In force: 34 min
Issued by: NWS Shreveport, LA
Area: Storm-based polygon

Counties Nacogdoches County, TX, Panola County, TX, Rusk County, TX, Shelby County, TX

The radar

The Shreveport radar (KSHV), 103 km from the middle of the area, began a volume at 23:27 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
Feb 18, 5:27 PM CST	TORNADO	11 Ene New Summerfield, TX	AN EF0 TORNADO UPROOTED SEVERAL TREES AND SNAPPED LARGE BRANCHES ALONG FM 1798 AND FM 839 NEAR CAT CREEK. THE PATH LENGTH WAS 1.15 MILES...THE PATH WIDTH WAS 0.15 MILES...AND MAXIMUM WINDS WERE ESTIMATED AT 75 MPH.
Feb 18, 5:28 PM CST	HAIL 0.75	5 Sw Henderson, TX	INTERSECTION OF FM 839 AND HWY 79
Feb 18, 5:48 PM CST	TORNADO	6 Nw Mount Enterprise, TX	AN EF1 TORNADO SNAPPED TREES AND LARGE BRANCHES ALONG COUNTY ROAD 3156. IT MOVED SOUTHEASTWARD AND OVERTURNED A TRAVEL TRAILER AND RIPPED THE ROOF OFF OF A METAL BARN ALONG COUNTY ROAD 3168. THE PATH LENGTH WAS 2 MILES...THE PATH WIDTH WAS 60 YARDS...AND ESTIM
Feb 18, 6:01 PM CST	TORNADO	4 Nne Mount Enterprise, TX	A BRIEF EF0 TORNADO SNAPPED LARGE HARDWOOD BRANCHES ALONG HWY 315. THE PATH LENGTH WAS 20 YDS...THE PATH WIDTH WAS 10 YDS...AND MAXIMUM WINDS WERE ESTIMATED AT 70 MPH.

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
Feb 18, 2:19 PM CST	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Shreveport, LA (KSHV), launched 12:00Z, 11.4 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-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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 668 m above ground
0-6 km bulk shear: 45 kt
0-1 km storm-relative helicity: 510 m²/s²
0-3 km storm-relative helicity: 670 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

392 
WFUS54 KSHV 182326
TORSHV
TXC347-365-401-419-190000-
/O.NEW.KSHV.TO.W.0013.130218T2326Z-130219T0000Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE SHREVEPORT LA
526 PM CST MON FEB 18 2013

THE NATIONAL WEATHER SERVICE IN SHREVEPORT HAS ISSUED A

* TORNADO WARNING FOR...
  NORTH CENTRAL NACOGDOCHES COUNTY IN EASTERN TEXAS...
  NORTHWESTERN SHELBY COUNTY IN EASTERN TEXAS...
  SOUTHWESTERN PANOLA COUNTY IN NORTHEAST TEXAS...
  SOUTHERN RUSK COUNTY IN NORTHEAST TEXAS...

* UNTIL 600 PM CST

* AT 522 PM CST...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 6 MILES NORTH OF
  NEW SALEM...OR 13 MILES SOUTHWEST OF HENDERSON...MOVING EAST AT 50
  MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  MINDEN...PINEHILL AND GARRISON...

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 3193 9499 3204 9499 3214 9497 3209 9437
      3179 9441
TIME...MOT...LOC 2326Z 282DEG 45KT 3200 9488

$$

05

The office that day

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

Issued	Product	Office	Counties	Lasted
Feb 18, 3:02 PM CST	Severe Thunderstorm Warning	SHV	Bowie, Cass	58 min
Feb 18, 4:26 PM CST	Severe Thunderstorm Warning	SHV	Gregg, Rusk, Smith	49 min
Feb 18, 4:29 PM CST	Severe Thunderstorm Warning	SHV	Cass, Marion	46 min
Feb 18, 5:11 PM CST	Severe Thunderstorm Warning	SHV	Cherokee, Rusk, Smith	34 min
Feb 18, 5:13 PM CST	Tornado Warning	SHV	Gregg, Panola, Rusk	32 min
Feb 18, 5:16 PM CST	Severe Thunderstorm Warning	SHV	Harrison, Marion	29 min
Feb 18, 5:45 PM CST	Severe Thunderstorm Warning	SHV	Cherokee, Nacogdoches, Rusk	45 min
Feb 18, 5:45 PM CST	Tornado Warning	SHV	Panola, Rusk	45 min
Feb 18, 5:49 PM CST	Severe Thunderstorm Warning	SHV	Marion	26 min
Feb 18, 5:59 PM CST	Tornado Warning	SHV	Nacogdoches, Panola, Rusk, Shelby	46 min

Nearby

Tornado Warnings in Texas, 2013 Every tornado warning in 2013 Tornadoes 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.