Alert archive / Texas / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 39, NWS San Angelo, TX

April 15, 2021Crockett County, Schleicher County, Sutton County, Texas

NWS San Angelo, TX issued this severe thunderstorm warning at Apr 15, 2021, 8:20 AM CDT for Crockett County, Schleicher County, Sutton County, Texas. It was in force for 40 min. 1 report 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 15, 2021, 8:20 AM CDT (13:20 UTC)
Expired
Apr 15, 2021, 9:00 AM CDT
In force
40 min
Issued by
NWS San Angelo, TX
Area
Storm-based polygon
Hail
1.5 in
Wind
50.0 mph

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

The radar

The San Angelo radar (KSJT), 90 km from the middle of the area, began a volume at 13:19 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
Apr 15, 8:53 AM CDTHAIL 1.755 N Sonora, TXA REPORT FROM FACEBOOK INDICATED GOLF BALL SIZE HAIL, 5 MILES NORTH OF SONORA.

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

The nearest sounding before it

Del Rio, TX (KDRT), launched 12:00Z, 1.3 hours before the alert went out and 138 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 12:00Z on 2021-04-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2593 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 12:00Z on 2021-04-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 169 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
2593 J/kg
Mixed-layer CIN
-44 J/kg
Mixed-layer LCL
634 m above ground
0-6 km bulk shear
46 kt
0-1 km storm-relative helicity
169 m²/s²
0-3 km storm-relative helicity
338 m²/s²
Significant tornado parameter
4.6
Supercell composite
21.4

Open this sounding in Storm Lab

The text

As transmitted.

717 
WUUS54 KSJT 151320
SVRSJT
TXC105-413-435-151400-
/O.NEW.KSJT.SV.W.0039.210415T1320Z-210415T1400Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service San Angelo TX
820 AM CDT Thu Apr 15 2021

The National Weather Service in San Angelo has issued a

* Severe Thunderstorm Warning for...
  Southwestern Schleicher County in west central Texas...
  Eastern Crockett County in west central Texas...
  Northwestern Sutton County in west central Texas...

* Until 900 AM CDT.

* At 819 AM CDT, a severe thunderstorm was located 15 miles west of
  Sonora, moving east at 20 mph.

  HAZARD...Ping pong ball size hail.

  SOURCE...Radar indicated.

  IMPACT...People and animals outdoors will be injured. Expect 
           damage to roofs, siding, windows, and vehicles.

* This severe thunderstorm will be near...
  Sonora around 855 AM CDT.

Other locations impacted by this severe thunderstorm include Us-
277 Near The Sutton-Schleicher County Line, I-10 Near The Crockett-
Sutton County Line and The Intersection Of I-10 And Ranch Road 1989.

This includes Interstate 10 between Mile Markers 377 and 412.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3049 10095 3066 10103 3094 10065 3045 10040
TIME...MOT...LOC 1319Z 248DEG 19KT 3061 10090 

HAIL...1.50IN
WIND...<50MPH
 
$$

JW
2 follow-up statements
170 
WWUS54 KSJT 151335
SVSSJT

Severe Weather Statement
National Weather Service San Angelo TX
835 AM CDT Thu Apr 15 2021

TXC105-151345-
/O.CAN.KSJT.SV.W.0039.000000T0000Z-210415T1400Z/
Crockett TX-
835 AM CDT Thu Apr 15 2021

...THE SEVERE THUNDERSTORM WARNING FOR EASTERN CROCKETT COUNTY IS
CANCELLED...
    
The severe thunderstorm which prompted the warning has moved out of 
the warned area. Therefore, the warning has been cancelled.

A Severe Thunderstorm Watch remains in effect until 300 PM CDT for
west central Texas.

LAT...LON 3054 10081 3076 10090 3094 10065 3053 10044
TIME...MOT...LOC 1335Z 248DEG 19KT 3064 10081 

$$

TXC413-435-151400-
/O.CON.KSJT.SV.W.0039.000000T0000Z-210415T1400Z/
Schleicher TX-Sutton TX-
835 AM CDT Thu Apr 15 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 900 AM CDT
FOR SOUTHWESTERN SCHLEICHER AND NORTHWESTERN SUTTON COUNTIES...

At 835 AM CDT, a severe thunderstorm was located 11 miles northwest
of Sonora, moving east at 20 mph.

HAZARD...Quarter size hail.

SOURCE...Radar indicated.

IMPACT...Damage to vehicles is expected.

This severe storm will be near...
  Sonora around 855 AM CDT.

Other locations impacted by this severe thunderstorm include Us-
277 Near The Sutton-Schleicher County Line and The Intersection Of I-
10 And Ranch Road 1989.

This includes Interstate 10 between Mile Markers 388 and 412.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3054 10081 3076 10090 3094 10065 3053 10044
TIME...MOT...LOC 1335Z 248DEG 19KT 3064 10081 

HAIL...1.00IN
WIND...<50MPH
 
$$

JW
070 
WWUS54 KSJT 151351
SVSSJT

Severe Weather Statement
National Weather Service San Angelo TX
851 AM CDT Thu Apr 15 2021

TXC413-435-151400-
/O.CON.KSJT.SV.W.0039.000000T0000Z-210415T1400Z/
Schleicher TX-Sutton TX-
851 AM CDT Thu Apr 15 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 900 AM CDT
FOR SOUTHWESTERN SCHLEICHER AND NORTH CENTRAL SUTTON COUNTIES...

At 850 AM CDT, a severe thunderstorm was located near Sonora, moving
east at 40 mph.

HAZARD...Quarter size hail.

SOURCE...Radar indicated.

IMPACT...Damage to vehicles is expected.

This severe thunderstorm will remain over mainly rural areas of
southwestern Schleicher and north central Sutton Counties, including
the following locations... Us-277 Near The Sutton-
Schleicher County Line.

This includes Interstate 10 between Mile Markers 393 and 399.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3057 10075 3068 10078 3077 10056 3070 10053
      3060 10048
TIME...MOT...LOC 1350Z 256DEG 37KT 3066 10068 

HAIL...1.00IN
WIND...<50MPH
 
$$
JW

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 15, 8:48 AM CDTSpecial Weather StatementSJTSchleicher42 min
Apr 15, 9:01 AM CDTSevere Thunderstorm WarningSJTSchleicher, Sutton44 min
Apr 15, 9:22 AM CDTSpecial Weather StatementSJTKimble38 min
Apr 15, 9:34 AM CDTSevere Thunderstorm WarningSJTKimble, Sutton41 min
Apr 15, 9:38 AM CDTSpecial Weather StatementSJTConcho37 min
Apr 15, 9:45 AM CDTSevere Thunderstorm WarningSJTKimble, Menard, Schleicher, Sutton45 min
Apr 15, 10:03 AM CDTSevere Thunderstorm WarningSJTKimble, Menard42 min
Apr 15, 10:27 AM CDTSevere Thunderstorm WarningSJTMcCulloch, Menard33 min
Apr 15, 10:34 AM CDTSevere Thunderstorm WarningSJTKimble41 min
Apr 15, 10:42 AM CDTSpecial Weather StatementSJTRunnels48 min
Apr 15, 10:54 AM CDTSevere Thunderstorm WarningSJTMcCulloch, Mason, Menard51 min
Apr 15, 11:31 AM CDTSevere Thunderstorm WarningSJTBrown, McCulloch, San Saba44 min
Apr 15, 11:46 AM CDTSpecial Weather StatementSJTMason29 min
Apr 15, 11:58 AM CDTSevere Thunderstorm WarningSJTBrown, McCulloch, San Saba47 min
Apr 15, 12:00 PM CDTSevere Thunderstorm WarningSJTMason45 min
Apr 15, 12:33 PM CDTSpecial Weather StatementSJTColeman42 min
Apr 15, 12:34 PM CDTSpecial Weather StatementSJTThrockmorton41 min
Apr 15, 12:53 PM CDTSevere Thunderstorm WarningSJTShackelford, Throckmorton37 min
Apr 15, 1:27 PM CDTSevere Thunderstorm WarningSJTBrown, Coleman48 min
Apr 15, 1:54 PM CDTSpecial Weather StatementSJTColeman36 min
Apr 15, 2:07 PM CDTSpecial Weather StatementSJTSan Saba38 min
Apr 15, 2:18 PM CDTSevere Thunderstorm WarningSJTSan Saba16 min
Apr 15, 2:29 PM CDTSpecial Weather StatementSJTSan Saba31 min
Apr 15, 2:38 PM CDTSevere Thunderstorm WarningSJTSan Saba37 min
Apr 15, 2:40 PM CDTSpecial Weather StatementSJTBrown35 min

Nearby

Severe Thunderstorm Warnings in Texas, 2021Every severe thunderstorm warning in 2021

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.