Alert archive / Texas / Severe Thunderstorm Warnings in 2013

Severe Thunderstorm Warning 121, NWS San Angelo, TX

May 16, 2013San Saba County, Texas

NWS San Angelo, TX issued this severe thunderstorm warning at May 16, 2013, 12:55 AM CDT for San Saba County, Texas. It was in force for 50 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
May 16, 2013, 12:55 AM CDT (05:55 UTC)
Expired
May 16, 2013, 1:45 AM CDT
In force
50 min
Issued by
NWS San Angelo, TX
Area
Storm-based polygon

County San Saba County, TX

The radar

The Ft Hood radar (KGRK), 145 km from the middle of the area, began a volume at 05:56 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
May 15, 6:01 PM CDTTornado WatchSPC8 hr

The nearest sounding before it

Fort Worth, TX (KFWD), launched 00:00Z, 5.9 hours before the alert went out and 236 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 00:00Z on 2013-05-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1604 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, Fort Worth, TX at 00:00Z on 2013-05-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 244 square meters per square second.193958Sfc1 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
1604 J/kg
Mixed-layer CIN
-30 J/kg
Mixed-layer LCL
843 m above ground
0-6 km bulk shear
45 kt
0-1 km storm-relative helicity
244 m²/s²
0-3 km storm-relative helicity
436 m²/s²
Significant tornado parameter
3.0
Supercell composite
20.6

Open this sounding in Storm Lab

What forecasters said that day

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

NWS San Angelo, TX wrote its last area forecast discussion before this severe thunderstorm warning went out at May 15, 6:54 PM CDT, 6 hours 1 minute earlier.

Area forecast discussion, May 15, 6:54 PM CDT, 6 hours 1 minute before
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Hazardous weather outlook, May 15, 5:28 PM CDT, 7 hours 27 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SAN ANGELO TX
528 PM CDT WED MAY 15 2013

TXZ049-054-064>066-071>073-076>078-098-099-113-114-127-128-139-
140-154-155-168>170-162230-
FISHER-NOLAN-STERLING-COKE-RUNNELS-IRION-TOM GREEN-CONCHO-
CROCKETT-SCHLEICHER-SUTTON-HASKELL-THROCKMORTON-JONES-SHACKELFORD-
TAYLOR-CALLAHAN-COLEMAN-BROWN-MCCULLOCH-SAN SABA-MENARD-KIMBLE-
MASON-
528 PM CDT WED MAY 15 2013

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF WEST CENTRAL
TEXAS.

.DAY ONE...TONIGHT

THERE IS A SLIGHT CHANCE FOR SEVERE THUNDERSTORMS LATE THIS
AFTERNOON AND EVENING EAST OF A ROTAN TO SAN ANGELO TO SONORA
LINE. THE MAIN SEVERE WEATHER THREAT WILL BE LARGE HAIL AND
DAMAGING WINDS. HOWEVER...AN ISOLATED TORNADO CANNOT BE RULED
OUT.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

SEVERE THUNDERSTORMS WILL BE POSSIBLE ACROSS WEST CENTRAL TEXAS
NEXT SATURDAY AS AN UPPER LEVEL TROUGH APPROACHES FROM THE WEST.

.SPOTTER INFORMATION STATEMENT...

SPOTTER MAY BE NECESSARY LATE THIS AFTERNOON AND EVENING.

The office that day

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

IssuedProductOfficeCountiesLasted
May 15, 7:20 PM CDTSpecial Weather StatementSJTRunnels25 min
May 15, 7:50 PM CDTSpecial Weather StatementSJTRunnels25 min
May 15, 7:52 PM CDTSevere Thunderstorm WarningSJTCoke, Runnels38 min
May 15, 9:55 PM CDTSpecial Weather StatementSJTBrown35 min
May 15, 10:10 PM CDTSevere Thunderstorm WarningSJTBrown35 min
May 15, 10:37 PM CDTSevere Thunderstorm WarningSJTBrown, McCulloch, San Saba23 min
May 15, 10:58 PM CDTSevere Thunderstorm WarningSJTMcCulloch, San Saba32 min
May 15, 11:28 PM CDTSevere Thunderstorm WarningSJTMcCulloch, San Saba32 min
May 15, 11:59 PM CDTSevere Thunderstorm WarningSJTSan Saba61 min
May 16, 12:38 AM CDTAreal Flood AdvisorySJTSan Saba3 hr
May 16, 6:20 PM CDTSpecial Weather StatementSJTKimble, Mason55 min

Nearby

Severe Thunderstorm Warnings in Texas, 2013Every severe thunderstorm warning in 2013

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.