Alert archive / Texas / Tornado Warnings in 2012

Tornado Warning 33, NWS Shreveport, LA

April 11, 2012Rusk County, Texas

NWS Shreveport, LA issued this tornado warning at Apr 11, 2012, 3:22 PM CDT for Rusk County, Texas. It was in force for 31 min. 2 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 11, 2012, 3:22 PM CDT (20:22 UTC)
Expired: Apr 11, 2012, 3:53 PM CDT
In force: 31 min
Issued by: NWS Shreveport, LA
Area: Storm-based polygon

County Rusk County, TX

The radar

The Shreveport radar (KSHV), 94 km from the middle of the area, began a volume at 20:24 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 11, 3:24 PM CDT	TORNADO	6 Nnw Mount Enterprise, TX	THE EF0 TORNADO FIRST TOUCHED DOWN SOUTH OF FM 1798 ALONG COUNTY ROAD 3146 WHERE A COUPLE TREES WERE SNAPPED AND UPROOTED. THE EF0 TORNADOCONTINUED SOUTHEAST SNAPPING LARGE BRANCHES ON ALONG CR 3146 BEFORE LIFTINGEAST OF CR 3146 AND NORTH OF CR 3145. MAX WIDTH
Apr 11, 3:25 PM CDT	TSTM WND DMG	7 Nw Mount Enterprise, TX	SMALL LIMBS DOWN NEAR MINDEN

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Shreveport, LA (KSHV), launched 12:00Z, 8.4 hours before the alert went out and 103 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: 1015 J/kg
Mixed-layer CIN: -48 J/kg
Mixed-layer LCL: 833 m above ground
0-6 km bulk shear: 26 kt
0-1 km storm-relative helicity: 73 m²/s²
0-3 km storm-relative helicity: 33 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.4

Open this sounding in Storm Lab

The text

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

332 
WFUS54 KSHV 112022
TORSHV
TXC401-112115-
/O.NEW.KSHV.TO.W.0033.120411T2022Z-120411T2115Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE SHREVEPORT LA
322 PM CDT WED APR 11 2012

THE NATIONAL WEATHER SERVICE IN SHREVEPORT HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHEASTERN RUSK COUNTY IN NORTHEAST TEXAS...

* UNTIL 415 PM CDT

* AT 319 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR MINDEN...OR
  14 MILES SOUTH OF HENDERSON...MOVING SOUTHEAST AT 10 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO MOUNT
  ENTERPRISE AND LAWSONVILLE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS IS AN EXTREMELY DANGEROUS AND LIFE THREATENING SITUATION. THIS 
STORM IS CAPABLE OF PRODUCING TORNADOES. IF YOU ARE IN THE PATH OF 
THIS TORNADO...TAKE COVER IMMEDIATELY.

THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A
WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS
AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN
INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO
COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS.

IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A
SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE
NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

&&

LAT...LON 3184 9469 3196 9481 3204 9465 3199 9459
      3197 9459 3197 9457 3192 9451
TIME...MOT...LOC 2022Z 326DEG 5KT 3197 9471

$$

06

1 follow-up statement

483 
WWUS54 KSHV 112053
SVSSHV

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SHREVEPORT LA
353 PM CDT WED APR 11 2012

TXC401-112101-
/O.CAN.KSHV.TO.W.0033.000000T0000Z-120411T2115Z/
RUSK TX-
353 PM CDT WED APR 11 2012

...THE TORNADO WARNING FOR RUSK COUNTY IS CANCELLED...

THE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO BETWEEN MINDEN AND 
MOUNT ENTERPRISE HAS DECREASED IN INTENSITY.

LAT...LON 3184 9469 3196 9481 3204 9465 3199 9459
      3197 9459 3197 9457 3192 9451
TIME...MOT...LOC 2051Z 326DEG 5KT 3194 9468

$$

06

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 10, 8:17 PM CDT	Severe Thunderstorm Warning	SHV	Bowie	43 min
Apr 10, 9:40 PM CDT	Severe Thunderstorm Warning	SHV	Bowie	35 min
Apr 11, 2:50 PM CDT	Tornado Warning	SHV	Rusk	40 min
Apr 11, 4:01 PM CDT	Tornado Warning	SHV	Sabine, San Augustine	44 min
Apr 11, 4:06 PM CDT	Tornado Warning	SHV	Nacogdoches, Shelby	39 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.