Alert archive / Texas / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 90, NWS Austin/San Antonio, TX

May 25, 2001Lavaca County, Texas

NWS Austin/San Antonio, TX issued this severe thunderstorm warning at May 25, 2001, 8:40 PM CDT for Lavaca County, Texas. It was in force for 65 min. 1 report came from inside the area while it was in force.

The area

The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties, with what was reported inside it.

The facts

Issued
May 25, 2001, 8:40 PM CDT (01:40 UTC)
Expired
May 25, 2001, 9:45 PM CDT
In force
65 min
Issued by
NWS Austin/San Antonio, TX
Area
Whole counties; the outline is the Mesonet’s reconstruction

County Lavaca County, TX

What was reported inside it

TimeReportWhereRemark
May 25, 8:45 PM CDTHail 1.5Moulton, TX

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The nearest sounding before it

Corpus Christi, TX (KCRP), launched 00:00Z, 1.7 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, Corpus Christi, TX at 00:00Z on 2001-05-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1852 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, Corpus Christi, TX at 00:00Z on 2001-05-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 58 square meters per square second.1939Sfc1 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
1852 J/kg
Mixed-layer CIN
-90 J/kg
Mixed-layer LCL
1288 m above ground
0-6 km bulk shear
41 kt
0-1 km storm-relative helicity
58 m²/s²
0-3 km storm-relative helicity
56 m²/s²
Significant tornado parameter
0.2
Supercell composite
3.5

Open this sounding in Storm Lab

The text

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

000 
WUUS54 KEWX 260140
SVRSAT
TXC285-260245-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
840 PM CDT FRI MAY 25 2001

THE NATIONAL WEATHER SERVICE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR THE FOLLOWING COUNTIES IN TEXAS...
  LAVACA

* UNTIL 945 PM CDT

* AT 840 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM OVER MOULTON...MOVING EAST AT 20 MPH.

* THE SEVERE THUNDERSTORM WILL BE...
RURAL LAVACA COUNTY AT 850 PM

* THIS WARNING INCLUDES LOCATIONS IN AND AROUND...
  MOULTON

VERY LARGE HAIL IS POSSIBLE WITH THIS SEVERE THUNDERSTORM. IF YOU ARE
IN THE PATH OF THE STORM...PUT YOUR CAR IN /A GARAGE AND MOVE TO A
SUBSTANTIAL SHELTER.


LAT...LON 2957 9723 2939 9717 2926 9670 2964 9687

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 Austin/San Antonio, TX wrote its last area forecast discussion before this severe thunderstorm warning went out at May 25, 2:50 PM CDT, 5 hours 50 minutes earlier.

Area forecast discussion, May 25, 2:50 PM CDT, 5 hours 50 minutes before
SOUTH CENTRAL TEXAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
250 PM CDT FRI MAY 25 2001

DEVELOPING CU FIELD AND CONVECTION ACROSS SOUTHEAST NEW MEXICO AND
WEST TEXAS INDICATIVE OF APPROACHING UPPER AIR DISTURBANCE...MOVING
INTO THE NORTHWEST PORTIONS OF THE FORECAST AREA THIS EVENING AND
SPREADING SOUTHWARD THROUGH THE AREA BY LATE TONIGHT. SCATTERED
SHOWERS AND THUNDERSTORMS WILL BE ASSOCIATED WITH THE DISTURBANCE...
HOWEVER MAIN AREA OF SEVERITY MAY BE OVER WESTERN ZONES WHERE
THERMAL GRADIENTS BEST.  WEAKER DISTURBANCE SATURDAY WILL PRODUCE
LESS ACTIVITY GIVEN A MIXED..MORE STABLE ATMOSPHERE.  UPPER RIDGE
BEGINS BUILDING SUNDAY ACROSS THE AREA WITH PRECIPITATION CUTTING
OFF...MEMORIAL DAY THROUGH WEDNESDAY LOOKS TO BE DRY WITH THE UPPER
PATTERN CHANGING LITTLE.  ANOTHER UPPER TROUGH TO THE WEST WILL
COUPLE WITH A DIFLUENT RIDGE OVER CENTRAL TEXAS TO BRING ANOTHER
CHANCE OF RAIN TO THE AREA THURSDAY AND FRIDAY.

PRELIMINARY NUMBERS...
AUS 65/88/70/90/72   33000
DRT 69/100/72/102/75 30000
SAT 67/88/72/91/73   42200

.EWX...NONE.

02/08/23

In the hours before

Special weather statement, May 25, 3:25 PM CDT, 5 hours 15 minutes before
TXZ171>173-183>194-202>209-217>225-228-260200-

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
325 PM CDT FRI MAY 25 2001

CHANCE OF SHOWERS OR THUNDERSTOMRS THIS EVENING AND/OR TONIGHT...
WITH A FEW ISOLATED SEVERE THUNDERSTORMS POSSIBLE...OVER PARTS
OF SOUTH CENTRAL TEXAS AND THE HILL COUNTRY.

THIS OUTLOOK APPLIES TO THE FOLLOWING SPECIFIC COUNTIES...

ATASCOSA...BANDERA...BASTROP...BEXAR...BLANCO...BURNET...CALDWELL...
COMAL...DEWITT...DIMMIT...EDWARDS...FAYETTE...FRIO...GILLESPIE...
GONZALES...GUADALUPE...HAYS...KARNES...KENDALL...KERR...KINNEY...
LAVACA...LEE...LLANO...MAVERICK...MEDINA...REAL...TRAVIS...UVALDE...
VAL VERDE...WILLIAMSON...WILSON AND ZAVALA.

ANOTHER UPPER AIR DISTURBANCE IS FORECAST TO MOVE OVER PARTS
OF SOUTH CENTRAL TEXAS TONIGHT...SOUTHWEST OF THE LARGE SCALE
LOW PRESSURE SYSTEM ALOFT NEAR AND SOUTH OF THE GREAT LAKES REGION.
THIS PATTERN COULD CAUSE A LITTLE MORE UNSTABLE CONDITIONS AND
FAVOR FORMATION OF SHOWERS OR THUNDERSTORMS.  AS A RESULT...THERE
WILL STILL BE A CHANCE OF SHOWERS OR THUNDERSTORMS...A FEW
ISOLATED THUNDERSTORMS POSSIBLY SEVERE...THIS EVENING AND/OR
TONIGHT.  STRONG OR DAMAGING DOWNBURST WINDS...SOME HAIL AND
LIGHTNING IS POSSIBLE.

SPOTTER NETWORKS MAY NEED TO BE ACTIVATED AS THE THUNDERSTORMS MOVE
INTO THE THREATENED AREA.
Local storm report, May 25, 8:02 PM CDT, 38 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO, TX
802 PM CDT FRI MAY 25 2001

TIME(CDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0740 PM    ROCKSPRINGS               TX   1.50 INCH HAIL
05/24/01   EDWARDS                        REPORTED BY BORDER PATROL

0830 PM    BARKSDALE AND CAMP WOOD   TX   WIND DAMAGE
05/24/01   REAL                           POWER LINES DOWN
                                          REPORTED BY LAW
                                          ENFORCEMENT

0910 PM    19 N HONDO                TX   1.50 INCH HAIL
05/24/01   MEDINA                         REPORTED BY LAW
                                          ENFORCEMENT

0914 PM    HONDO                     TX   WIND DAMAGE
05/24/01   MEDINA                         TREES DOWNED
                                          REPORTED BY
                                          LAW ENFORCEMENT

0920 PM    UVALDE                    TX   WIND DAMAGE
05/24/01   UVALDE                         WIND DAMAGE
                                          THROUGHOUT THE
                                          COUNTY
                                          REPORTED BY LAW
                                          ENFORCEMENT

0925 PM    DEL RIO TO BRACKETTVILLE  TX   WIND DAMAGE
05/24/01   VALVERDE/KINNEY                NUMEROUS TREES
                                          DOWNED

0945 PM    ENCHANTED ROCK STATE PARK TX   1.75 INCH HAIL
05/24/01   LLANO                          OCCURRED AROUND
                                          9PM
                                          REPORTED BY LAW
                                          ENFORCEMENT

0335 AM    YORKTOWN                  TX   WIND DAMAGE
05/25/01   DEWITT                         TREES DOWN
                                          REPORTED BY LAW
                                          ENFORCEMENT

JME

The office that day

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

IssuedProductOfficeCountiesLasted
May 25, 10:29 PM CDTSevere Thunderstorm WarningEWXEdwards61 min
May 25, 10:48 PM CDTSevere Thunderstorm WarningEWXBandera, Medina57 min
May 25, 11:27 PM CDTSevere Thunderstorm WarningEWXBexar63 min
May 25, 11:32 PM CDTSevere Thunderstorm WarningEWXEdwards, Real28 min
May 26, 12:08 AM CDTSevere Thunderstorm WarningEWXUvalde67 min
May 26, 12:40 AM CDTSevere Thunderstorm WarningEWXKinney65 min
May 26, 1:58 AM CDTSevere Thunderstorm WarningEWXMaverick62 min
May 26, 1:47 PM CDTSevere Thunderstorm WarningEWXFayette28 min

Nearby

Severe Thunderstorm Warnings in Texas, 2001Every severe thunderstorm warning in 2001

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.