Alert archive / Texas / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 117, NWS San Angelo, TX

May 22, 2011Callahan County, Shackelford County, Texas

NWS San Angelo, TX issued this severe thunderstorm warning at May 22, 2011, 6:59 PM CDT for Callahan County, Shackelford County, Texas. It was in force for 46 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 22, 2011, 6:59 PM CDT (23:59 UTC)
Expired
May 22, 2011, 7:45 PM CDT
In force
46 min
Issued by
NWS San Angelo, TX
Area
Storm-based polygon

Counties Callahan County, TX, Shackelford County, TX

The watch it was issued in

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

IssuedProductOfficeLasted
May 22, 2:48 PM CDTSevere Thunderstorm WatchSPC7 hr

The nearest sounding before it

Fort Worth, TX (KFWD), launched 12:00Z, 12.0 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 2011-05-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3761 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 12:00Z on 2011-05-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 240 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
3761 J/kg
Mixed-layer CIN
-19 J/kg
Mixed-layer LCL
534 m above ground
0-6 km bulk shear
35 kt
0-1 km storm-relative helicity
240 m²/s²
0-3 km storm-relative helicity
224 m²/s²
Significant tornado parameter
3.3
Supercell composite
16.2

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 22, 6:34 PM CDT, 25 minutes earlier.

Area forecast discussion, May 22, 6:34 PM CDT, 25 minutes before
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Hazardous weather outlook, May 22, 1:13 PM CDT, 5 hours 46 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SAN ANGELO TX
113 PM CDT SUN MAY 22 2011

TXZ049-054-064>066-071>073-076>078-098-099-113-114-127-128-139-
140-154-155-168>170-231815-
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-
113 PM CDT SUN MAY 22 2011

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

.DAY ONE...THIS AFTERNOON AND TONIGHT

SCATTERED THUNDERSTORMS WILL LIKELY DEVELOP ACROSS MUCH OF WEST
CENTRAL TEXAS THIS AFTERNOON AND TONIGHT. DUE TO STRONG
INSTABILITY...SOME STORMS MAY BECOME SEVERE... WITH THE MAIN THREAT
BEING VERY LARGE HAIL...LARGER THAN GOLFBALLS POSSIBLE.
ALSO...STRONG DAMAGING WINDS ARE POSSIBLE.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY

THUNDERSTORMS WILL BE POSSIBLE EARLY TUESDAY ACROSS THE EASTERN
BIG COUNTRY AND HEARTLAND. A FEW STORMS MAY BECOME SEVERE.
ALSO...ELEVATED TO NEAR CRITICAL FIRE WEATHER CONDITIONS ARE
EXPECTED TUESDAY AFTERNOON ACROSS THE BIG COUNTRY AND WESTERN
CONCHO VALLEY AS STRONG SOUTHWEST WINDS COMBINE WITH VERY LOW
RELATIVE HUMIDITY VALUES.

.SPOTTER INFORMATION STATEMENT...
SPOTTER ACTIVATION WILL LIKELY BE REQUIRED THIS AFTERNOON AND TONIGHT.

08

In the hours before

Local storm report, May 22, 5:34 PM CDT, 1 hour 25 minutes before
PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE SAN ANGELO TX
534 PM CDT SUN MAY 22 2011

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0526 PM     HAIL             BAIRD                   32.40N  99.40W
05/22/2011  E1.75 INCH       CALLAHAN           TX   LAW ENFORCEMENT

            REPORT WAS RELAYED BY ABILENE POLICE DEPT.

&&

CORRECTED EVENT TIME...REMARKS

EVENT NUMBER SJT1100187

19
Local storm report, May 22, 5:38 PM CDT, 1 hour 21 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SAN ANGELO TX
538 PM CDT SUN MAY 22 2011

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0536 PM     HAIL             2 NE ECHO               31.94N  99.30W
05/22/2011  E1.75 INCH       COLEMAN            TX   TRAINED SPOTTER

            GOLFBALL SIZE HAIL WAS CRACKING WINDOWS AT A RESIDENCE.

&&

EVENT NUMBER SJT1100190

19
Local storm report, May 22, 5:46 PM CDT, 1 hour 13 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SAN ANGELO TX
546 PM CDT SUN MAY 22 2011

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0545 PM     HAIL             2 E ECHO                31.93N  99.28W
05/22/2011  E1.00 INCH       COLEMAN            TX   TRAINED SPOTTER

            QUARTER SIZE HAIL WAS REPORTED

&&

EVENT NUMBER SJT1100191

19
Local storm report, May 22, 6:19 PM CDT, 40 minutes before
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Special weather statement, May 22, 6:21 PM CDT, 38 minutes before
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Local storm report, May 22, 6:51 PM CDT, 8 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
May 21, 7:12 PM CDTSevere Thunderstorm WarningSJTSan Saba48 min
May 22, 4:04 PM CDTSevere Thunderstorm WarningSJTNolan, Taylor41 min
May 22, 4:08 PM CDTSevere Thunderstorm WarningSJTJones, Shackelford52 min
May 22, 4:33 PM CDTSevere Thunderstorm WarningSJTCallahan, Coleman, Runnels42 min
May 22, 4:37 PM CDTSevere Thunderstorm WarningSJTHaskell, Jones38 min
May 22, 4:50 PM CDTSevere Thunderstorm WarningSJTThrockmorton40 min
May 22, 4:55 PM CDTSevere Thunderstorm WarningSJTCallahan50 min
May 22, 5:02 PM CDTSevere Thunderstorm WarningSJTJones, Shackelford, Throckmorton43 min
May 22, 5:11 PM CDTSevere Thunderstorm WarningSJTBrown, Callahan, Coleman49 min
May 22, 5:40 PM CDTSevere Thunderstorm WarningSJTCallahan, Shackelford20 min
May 22, 5:49 PM CDTSevere Thunderstorm WarningSJTFisher, Nolan41 min
May 22, 5:52 PM CDTSevere Thunderstorm WarningSJTBrown38 min
May 22, 6:03 PM CDTTornado WarningSJTBrown27 min
May 22, 6:06 PM CDTSevere Thunderstorm WarningSJTCallahan39 min
May 22, 6:25 PM CDTSevere Thunderstorm WarningSJTFisher, Jones38 min
May 22, 6:28 PM CDTTornado WarningSJTBrown47 min
May 22, 6:43 PM CDTSevere Thunderstorm WarningSJTCallahan47 min
May 22, 6:55 PM CDTSevere Thunderstorm WarningSJTHaskell, Jones16 min

Nearby

Severe Thunderstorm Warnings in Texas, 2011Every severe thunderstorm warning in 2011

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.