Alert archive / Texas / Tornado Warnings in 1996

Tornado Warning 21, NWS San Angelo, TX

September 18, 1996Callahan County, Shackelford County, Texas

NWS San Angelo, TX issued this tornado warning at Sep 18, 1996, 4:51 PM CDT for Callahan County, Shackelford County, Texas. It was in force for 69 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
Sep 18, 1996, 4:51 PM CDT (21:51 UTC)
Expired
Sep 18, 1996, 6:00 PM CDT
In force
69 min
Issued by
NWS San Angelo, TX
Area
Whole counties

Counties Callahan County, TX, Shackelford County, TX

The radar

The Dyess AFB radar (KDYX), 11 km from the middle of the area, began a volume at 21:53 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

TimeReportWhereRemark
Sep 18, 6:02 PM CDTHail 0.75Putnam, 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

Fort Worth, TX (KFWD), launched 12:00Z, 9.9 hours before the alert went out and 197 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-pSkew-T log-p diagram, Fort Worth, TX at 12:00Z on 1996-09-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1067 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Fort Worth, TX at 12:00Z on 1996-09-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 121 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
1067 J/kg
Mixed-layer CIN
-107 J/kg
Mixed-layer LCL
579 m above ground
0-6 km bulk shear
17 kt
0-1 km storm-relative helicity
121 m²/s²
0-3 km storm-relative helicity
163 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.1

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KSJT 182149
TORSJT
TXC059-417-182300-

BULLETIN - EBS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE SAN ANGELO TX
451 PM CDT WED SEP 18 1996

THE NATIONAL WEATHER SERVICE IN SAN ANGELO TX HAS ISSUED A
TORNADO WARNING EFFECTIVE UNTIL 600 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...

IN NORTHWESTERN TEXAS

   ...NORTHWESTERN CALLAHAN COUNTY
   ...SOUTHWESTERN SHACKELFORD COUNTY
 
AT 445 PM CDT...A POSSIBLE TORNADO WAS INDICATED BY SAN ANGELO
DOPPLER RADAR ON THE NORTH SIDE OF ABILENE. AS THE POSSIBLE TORNADO
MOVES EAST SOUTHEAST AT AROUND 15 MPH...IT WILL MOVE INTO THE
NORTHWEST SECTIONS OF CALLAHAN AND SOUTHWEST SHACKELFORD COUNTIES.

CLYDE AND BAIRD ARE IN THE PATH OF THIS POSSIBLE TORNADO. PEOPLE
TRAVELING ALONG INTERSTATE 20 EAST OF ABILENE SHOULD TAKE SHELTER
IMMEDIATELY.

DO NOT USE YOUR CAR TO TRY TO OUTRUN A TORNADO. CARS ARE EASILY
TOSSED AROUND BY TORNADO WINDS. IF YOU ARE CAUGHT IN THE PATH OF A
TORNADO...LEAVE THE CAR AND GO TO A STRONG BUILDING. IF NO STURDY
STRUCTURE IS NEARBY...SEEK SAFETY IN A DITCH OR LOW SPOT.

The office that day

Everything else NWS San Angelo, TX issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Sep 18, 10:21 AM CDTSevere Thunderstorm WarningSJTFisher, Jones44 min
Sep 18, 2:56 PM CDTSevere Thunderstorm WarningSJTFisher, Nolan49 min
Sep 18, 3:02 PM CDTTornado WarningSJTFisher, Nolan48 min
Sep 18, 3:30 PM CDTTornado WarningSJTJones, Taylor60 min
Sep 18, 4:15 PM CDTTornado WarningSJTTaylor60 min
Sep 18, 4:26 PM CDTSevere Thunderstorm WarningSJTJones59 min
Sep 18, 5:50 PM CDTTornado WarningSJTCallahan50 min
Sep 18, 6:46 PM CDTSevere Thunderstorm WarningSJTBrown, Coleman59 min

Nearby

Tornado Warnings in Texas, 1996Every tornado warning in 1996Tornadoes 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; radar from the NEXRAD Level II archive.