Alert archive / Texas / Tornado Warnings in 2020

Tornado Warning 13, NWS San Angelo, TX

April 12, 2020Crockett County, Schleicher County, Sutton County, Texas

NWS San Angelo, TX issued this tornado warning at Apr 12, 2020, 1:35 AM CDT for Crockett County, Schleicher County, Sutton County, Texas. It was in force for 25 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Apr 12, 2020, 1:35 AM CDT (06:35 UTC)
Expired
Apr 12, 2020, 2:00 AM CDT
In force
25 min
Issued by
NWS San Angelo, TX
Area
Storm-based polygon
Tornado
Radar indicated
Hail
1.0 in

Counties Crockett County, TX, Schleicher County, TX, Sutton County, TX

The radar

The San Angelo radar (KSJT), 93 km from the middle of the area, began a volume at 06:36 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.

The nearest sounding before it

Del Rio, TX (KDRT), launched 00:00Z, 6.6 hours before the alert went out and 146 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, Del Rio, TX at 00:00Z on 2020-04-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3028 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Del Rio, TX at 00:00Z on 2020-04-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 185 square meters per square second.1939587897117Sfc1 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
3028 J/kg
Mixed-layer CIN
-37 J/kg
Mixed-layer LCL
1174 m above ground
0-6 km bulk shear
80 kt
0-1 km storm-relative helicity
185 m²/s²
0-3 km storm-relative helicity
286 m²/s²
Significant tornado parameter
4.8
Supercell composite
23.5

Open this sounding in Storm Lab

The text

As transmitted.

207 
WFUS54 KSJT 120635
TORSJT
TXC105-413-435-120700-
/O.NEW.KSJT.TO.W.0013.200412T0635Z-200412T0700Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service San Angelo TX
135 AM CDT Sun Apr 12 2020

The National Weather Service in San Angelo has issued a

* Tornado Warning for...
  Southwestern Schleicher County in west central Texas...
  East central Crockett County in west central Texas...
  Northwestern Sutton County in west central Texas...

* Until 200 AM CDT.
    
* At 135 AM CDT, a severe thunderstorm capable of producing a tornado
  was located 9 miles southeast of Ozona, moving northeast at 35 mph.

  HAZARD...Tornado and quarter size hail.

  SOURCE...Radar indicated rotation.

  IMPACT...Flying debris will be dangerous to those caught without 
           shelter. Mobile homes will be damaged or destroyed. 
           Damage to roofs, windows, and vehicles will occur.  Tree 
           damage is likely.

* This tornadic thunderstorm will remain over mainly rural areas of
  southwestern Schleicher, east central Crockett and northwestern
  Sutton Counties, including the following locations... I-10 Near The
  Crockett-Sutton County Line.

This includes Interstate 10 between Mile Markers 368 and 384.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

Tornadoes are extremely difficult to see and confirm at night. Do not
wait to see or hear the tornado. TAKE COVER NOW!

&&

LAT...LON 3055 10110 3067 10120 3090 10099 3070 10076
TIME...MOT...LOC 0635Z 239DEG 29KT 3064 10107 

TORNADO...RADAR INDICATED
HAIL...1.00IN

$$

SK

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 11, 7:08 PM CDTSevere Thunderstorm WarningSJTIrion, Tom Green52 min
Apr 11, 7:10 PM CDTSevere Thunderstorm WarningSJTShackelford, Throckmorton35 min
Apr 11, 7:33 PM CDTSpecial Weather StatementSJTRunnels42 min
Apr 11, 7:38 PM CDTSevere Thunderstorm WarningSJTShackelford37 min
Apr 11, 7:52 PM CDTSevere Thunderstorm WarningSJTConcho, Tom Green36 min
Apr 11, 8:26 PM CDTSpecial Weather StatementSJTConcho49 min
Apr 11, 9:04 PM CDTSpecial Weather StatementSJTSterling41 min
Apr 11, 10:37 PM CDTSpecial Weather StatementSJTCrockett38 min
Apr 11, 11:30 PM CDTSpecial Weather StatementSJTCrockett45 min
Apr 12, 12:18 AM CDTSpecial Weather StatementSJTCrockett42 min
Apr 12, 1:07 AM CDTSevere Thunderstorm WarningSJTCrockett, Schleicher53 min
Apr 12, 1:28 AM CDTSevere Thunderstorm WarningSJTCrockett62 min
Apr 12, 1:34 AM CDTSpecial Weather StatementSJTConcho41 min
Apr 12, 1:58 AM CDTSevere Thunderstorm WarningSJTSchleicher, Sutton, Tom Green62 min
Apr 12, 2:13 AM CDTTornado WarningSJTSchleicher13 min
Apr 12, 2:15 AM CDTSpecial Weather StatementSJTConcho45 min
Apr 12, 2:19 AM CDTSevere Thunderstorm WarningSJTCrockett56 min
Apr 12, 2:20 AM CDTSpecial Weather StatementSJTFisher40 min
Apr 12, 2:37 AM CDTAreal Flood AdvisorySJTTom Green2 hr
Apr 12, 2:40 AM CDTSpecial Weather StatementSJTCoke, Crockett, Irion, Sterling50 min
Apr 12, 3:01 AM CDTSevere Thunderstorm WarningSJTCoke, Crockett, Irion, Runnels, Schleicher, Sterling and 1 more59 min
Apr 12, 3:02 AM CDTSevere Thunderstorm WarningSJTConcho, Menard, Schleicher, Tom Green58 min
Apr 12, 3:22 AM CDTSpecial Weather StatementSJTCoke, Nolan38 min
Apr 12, 3:36 AM CDTSevere Thunderstorm WarningSJTConcho, McCulloch, Menard54 min
Apr 12, 3:50 AM CDTTornado WarningSJTConcho, McCulloch25 min
Apr 12, 4:02 AM CDTSpecial Weather StatementSJTColeman, Runnels43 min
Apr 12, 4:08 AM CDTTornado WarningSJTMcCulloch31 min
Apr 12, 4:13 AM CDTSevere Thunderstorm WarningSJTBrown, Coleman, McCulloch, San Saba48 min
Apr 12, 4:47 AM CDTSpecial Weather StatementSJTBrown, Coleman, McCulloch43 min

Nearby

Tornado Warnings in Texas, 2020Every tornado warning in 2020Tornadoes in 2020

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.