Alert archive / Texas / Tornado Warnings in 1996

Tornado Warning 18, NWS Shreveport, LA

April 20, 1996Shelby County, Texas

NWS Shreveport, LA issued this tornado warning at Apr 20, 1996, 4:12 PM CDT for Shelby County, Texas. It was in force for 33 min. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued: Apr 20, 1996, 4:12 PM CDT (21:12 UTC)
Expired: Apr 20, 1996, 4:45 PM CDT
In force: 33 min
Issued by: NWS Shreveport, LA
Area: Whole counties

County Shelby County, TX

What was reported inside it

Time	Report	Where	Remark
Apr 20, 4:15 PM CDT	Tornado F1	Timpson, TX

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The nearest sounding before it

Shreveport, LA (KSHV), launched 12:00Z, 9.2 hours before the alert went out and 85 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: 2730 J/kg
Mixed-layer CIN: -5 J/kg
Mixed-layer LCL: 638 m above ground
0-6 km bulk shear: 44 kt
0-1 km storm-relative helicity: 144 m²/s²
0-3 km storm-relative helicity: 213 m²/s²
Significant tornado parameter: 2.8
Supercell composite: 11.4

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KSHV 202112
TORSHV
TXC419-202145-
 
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE SHREVEPORT LA
412 PM CDT SAT APR 20 1996
 
THE NATIONAL WEATHER SERVICE IN SHREVEPORT HAS ISSUED A
TORNADO WARNING EFFECTIVE UNTIL  445 PM CDT
FOR THE FOLLOWING AREA...
 
IN NORTHEAST TEXAS
 
   ...NORTHERN SHELBY COUNTY
 
NATIONAL WEATHER SERVICE RADAR INDICATED POSSIBLE TORNADOES IN NORTHERN
SHELBY COUNTY JUST NORTHEAST AND JUST SOUTHWEST OF TIMPSON< TEXAS...
MOVING NORTHEAST AT 35 MILES AN HOUR.
 
IF YOU ARE IN A MOBILE HOME...GO TO A STORM SHELTER IF AVAILABLE.
IF A STORM SHELTER IS NOT AVAILABLE...SEEK SHELTER IN A DITCH OR LOW
SPOT.

What forecasters said that day

The local office's own words before this tornado warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Shreveport, LA wrote its last area forecast discussion before this tornado warning went out at Apr 20, 2:55 PM CDT, 1 hour 17 minutes earlier.

Area forecast discussion, Apr 20, 2:55 PM CDT, 1 hour 17 minutes before

AREA FORECAST DISCUSSION...CORRECTED
NATIONAL WEATHER SERVICE SHREVEPORT LA
245 PM CDT SAT APR 20 1996

LARGE AREA RW/TSTMS MOVING INTO E TX ATTM. APPEARS CAP IS BKN AND
CNVCTN TO INTENSIFY. WIND SHIFT BNDRY ON 88D JUST SOUTH OF SHV
EXTENDING INTO TSTM CLUSTER. EXPCT ACTIVITY TO EXPAND ALONG BOUNDARY
AND CONNECT TO SMALLER AREA OF YOUNG TSTMS NORTH OF MLU. SELS CONSIDERING
A WATCH. WILL NOW GET POISED FOR ISSUANCE.

AS FOR NEXT COUPLE OF DAYS...WILL REMAIN IN WARM MOIST SECTOR THRU
MON. FOR NOW WILL GET POISED TO WORK WATCH.

SHV 67/82/69/79  7365

VII

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 19, 7:46 PM CDT	Severe Thunderstorm Warning	SHV	Red River	44 min
Apr 19, 8:03 PM CDT	Severe Thunderstorm Warning	SHV	Wood	27 min
Apr 19, 8:30 PM CDT	Severe Thunderstorm Warning	SHV	Camp, Franklin, Titus	45 min
Apr 19, 8:32 PM CDT	Severe Thunderstorm Warning	SHV	Red River	28 min
Apr 19, 9:03 PM CDT	Severe Thunderstorm Warning	SHV	Red River	57 min
Apr 19, 9:14 PM CDT	Severe Thunderstorm Warning	SHV	Morris, Titus	46 min
Apr 19, 9:21 PM CDT	Severe Thunderstorm Warning	SHV	Cass	54 min
Apr 19, 10:22 PM CDT	Severe Thunderstorm Warning	SHV	Franklin, Titus	53 min
Apr 19, 11:19 PM CDT	Severe Thunderstorm Warning	SHV	Bowie	26 min
Apr 20, 2:44 PM CDT	Severe Thunderstorm Warning	SHV	Cherokee	61 min
Apr 20, 3:14 PM CDT	Severe Thunderstorm Warning	SHV	Rusk	46 min
Apr 20, 3:25 PM CDT	Severe Thunderstorm Warning	SHV	Nacogdoches	50 min
Apr 20, 3:51 PM CDT	Severe Thunderstorm Warning	SHV	Panola	54 min
Apr 20, 4:18 PM CDT	Tornado Warning	SHV	Panola	27 min

Nearby

Tornado Warnings in Texas, 1996 Every tornado warning in 1996 Tornadoes in 1996

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.