Alert archive / Texas / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 95, NWS Austin/San Antonio, TX

May 25, 2011Bastrop County, Fayette County, Lee County, Texas

NWS Austin/San Antonio, TX issued this severe thunderstorm warning at May 25, 2011, 8:18 PM CDT for Bastrop County, Fayette County, Lee County, Texas. It was in force for 42 min. 2 reports 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
May 25, 2011, 8:18 PM CDT (01:18 UTC)
Expired
May 25, 2011, 9:00 PM CDT
In force
42 min
Issued by
NWS Austin/San Antonio, TX
Area
Storm-based polygon

Counties Bastrop County, TX, Fayette County, TX, Lee County, TX

The radar

The Ft Hood radar (KGRK), 77 km from the middle of the area, began a volume at 01:21 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
May 25, 8:18 PM CDTHAIL 1Paige, TX
May 25, 8:20 PM CDTHAIL 1.75Giddings, TX

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

The nearest sounding before it

Corpus Christi, TX (KCRP), launched 00:00Z, 1.3 hours before the alert went out and 281 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, Corpus Christi, TX at 00:00Z on 2011-05-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 4864 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, Corpus Christi, TX at 00:00Z on 2011-05-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 64 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
4864 J/kg
Mixed-layer CIN
-116 J/kg
Mixed-layer LCL
897 m above ground
0-6 km bulk shear
42 kt
0-1 km storm-relative helicity
64 m²/s²
0-3 km storm-relative helicity
93 m²/s²
Significant tornado parameter
1.0
Supercell composite
4.3

Open this sounding in Storm Lab

The text

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

236 
WUUS54 KEWX 260118
SVREWX
TXC021-149-287-260200-
/O.NEW.KEWX.SV.W.0095.110526T0118Z-110526T0200Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
818 PM CDT WED MAY 25 2011

THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EAST CENTRAL BASTROP COUNTY...
  EXTREME NORTHEASTERN FAYETTE COUNTY...
  SOUTHERN LEE COUNTY...

* UNTIL 900 PM CDT.

* AT 817 PM CDT...NWS METEOROLOGISTS HAVE DETECTED A SEVERE
  THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND DAMAGING
  WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED 7 MILES SOUTH OF
  PAIGE...OR 8 MILES NORTHEAST OF SMITHVILLE...AND MOVING EAST AT 35
  MPH.

* SOME LOCATIONS IN THE WARNING INCLUDE GIDDINGS AND DIME BOX.

LAT...LON 3010 9713 3025 9717 3040 9678 3033 9674
      3033 9669 3027 9666 3024 9672 3017 9678
      3016 9674 3017 9669 3013 9665
TIME...MOT...LOC 0118Z 280DEG 29KT 3011 9709

$$
2 follow-up statements
786 
WWUS54 KEWX 260144
SVSEWX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
844 PM CDT WED MAY 25 2011

TXC021-149-287-260200-
/O.CON.KEWX.SV.W.0095.000000T0000Z-110526T0200Z/
LEE TX-BASTROP TX-FAYETTE TX-
844 PM CDT WED MAY 25 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 900 PM CDT
FOR EXTREME NORTHEASTERN FAYETTE...EXTREME EAST CENTRAL BASTROP AND
SOUTHEASTERN LEE COUNTIES...

AT 837 PM CDT...NWS METEOROLOGISTS CONTINUED TO DETECT A SEVERE 
THUNDERSTORM CAPABLE OF PRODUCING GOLF BALL SIZE HAIL. THIS STORM 
WAS LOCATED NEAR SERBIN...OR 7 MILES SOUTH OF GIDDINGS...MOVING EAST 
AT 35 MPH.

GOLFBALL SIZED HAIL WAS REPORTED IN GIDDINGS IN ASSOCIATION WITH 
THIS STORM. MOTORISTS ON HIGHWAY 290 EAST OF THE INTERSECTION WITH 
HIGHWAY 77 CAN EXPECT QUARTER TO GOLF BALL SIZED HAIL WITH THIS 
THUNDERSTORM. 

ADDITIONAL LOCATIONS IN THE WARNING AREA INCLUDE LEDBETTER AND 
CARMINE.

LAT...LON 3010 9706 3029 9704 3040 9678 3033 9674
      3033 9669 3027 9666 3024 9672 3017 9678
      3016 9674 3017 9669 3013 9665
TIME...MOT...LOC 0142Z 280DEG 29KT 3008 9687

$$
526 
WWUS54 KEWX 260157
SVSEWX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
857 PM CDT WED MAY 25 2011

TXC021-149-287-260207-
/O.EXP.KEWX.SV.W.0095.000000T0000Z-110526T0200Z/
LEE TX-BASTROP TX-FAYETTE TX-
857 PM CDT WED MAY 25 2011

...THE SEVERE THUNDERSTORM WARNING FOR EXTREME NORTHEASTERN
FAYETTE...EXTREME EAST CENTRAL BASTROP AND SOUTHEASTERN LEE COUNTIES 
WILL BE ALLOWED TO EXPIRE AT 900 PM CDT...

THE STORM WILL BE OUT OF THE WARNED AREA BY 900 PM. 

LAT...LON 3010 9706 3029 9704 3040 9678 3033 9674
      3033 9669 3027 9666 3024 9672 3017 9678
      3016 9674 3017 9669 3013 9665
TIME...MOT...LOC 0157Z 280DEG 29KT 3006 9673

$$

The office that day

Everything else NWS Austin/San Antonio, TX issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 25, 8:16 PM CDTSevere Thunderstorm WarningEWXBastrop, Fayette, Lee44 min
May 25, 8:56 PM CDTSevere Thunderstorm WarningEWXFayette19 min
May 25, 9:09 PM CDTSevere Thunderstorm WarningEWXBastrop, Fayette, Lee36 min
May 25, 9:30 PM CDTSevere Thunderstorm WarningEWXBastrop, Fayette, Lee30 min
May 25, 10:05 PM CDTSevere Thunderstorm WarningEWXFayette40 min
May 25, 10:42 PM CDTSevere Thunderstorm WarningEWXFayette33 min
May 25, 11:01 PM CDTSevere Thunderstorm WarningEWXFayette44 min
May 25, 11:41 PM CDTSevere Thunderstorm WarningEWXFayette, Lavaca49 min
May 26, 12:21 AM CDTSevere Thunderstorm WarningEWXFayette, Lavaca39 min
May 26, 12:43 AM CDTSevere Thunderstorm WarningEWXLavaca32 min
May 26, 1:09 AM CDTTornado WarningEWXLavaca21 min
May 26, 3:16 AM CDTSevere Thunderstorm WarningEWXDeWitt44 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.