Alert archive / Texas / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 10, NWS Austin/San Antonio, TX

February 16, 2001Gillespie County, Kendall County, Kerr County, Texas

NWS Austin/San Antonio, TX issued this severe thunderstorm warning at Feb 16, 2001, 12:30 AM CST for Gillespie County, Kendall County, Kerr County, Texas. It was in force for 45 min. No storm report in the archive falls 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.

The facts

Issued: Feb 16, 2001, 12:30 AM CST (06:30 UTC)
Expired: Feb 16, 2001, 1:15 AM CST
In force: 45 min
Issued by: NWS Austin/San Antonio, TX
Area: Whole counties; the outline is the Mesonet’s reconstruction

Counties Gillespie County, TX, Kendall County, TX, Kerr County, TX

The watch it was issued in

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

Issued	Product	Office	Lasted
Feb 15, 9:15 PM CST	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Del Rio, TX (KDRT), launched 00:00Z, 6.5 hours before the alert went out and 210 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 616 J/kg
Mixed-layer CIN: -49 J/kg
Mixed-layer LCL: 661 m above ground
0-6 km bulk shear: 83 kt
0-1 km storm-relative helicity: 36 m²/s²
0-3 km storm-relative helicity: 156 m²/s²
Significant tornado parameter: 0.3
Supercell composite: 1.3

Open this sounding in Storm Lab

The text

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

000 
WUUS54 KEWX 160630
SVRSAT
TXC171-259-265-160715-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
1230 AM CST FRI FEB 16 2001

THE NATIONAL WEATHER SERVICE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR THE FOLLOWING COUNTIES IN TEXAS...
  GILLESPIE COUNTY
  KENDALL COUNTY
 
* UNTIL 115 AM CST

* AT 1227 AM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM OVER COMFORT...OR ABOUT 11 MILES EAST OF
  KERRVILLE...MOVING NORTHEAST AT 70 MPH.

* THE SEVERE THUNDERSTORM WILL BE...
RURAL KENDALL COUNTY AT 1240 AM CST

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.

IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER FROM THE WEATHER IN A STRONG
BUILDING. DAMAGING WIND...LARGE HAIL...VERY HEAVY RAIN...AND DEADLY
LIGHTNING ARE ALL POSSIBLE IN RSEVERE THUNDERSTORMS. STAY INSIDE AWAY
FROM WINDOWS UNTIL THE STORM HAS PASSED.


LAT...LON 3006 9906 2993 9891 3019 9862 3048 9863

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 Feb 15, 9:10 PM CST, 3 hours 20 minutes earlier.

Area forecast discussion, Feb 15, 9:10 PM CST, 3 hours 20 minutes before

SOUTH CENTRAL TEXAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
910 PM CST THU FEB 15 2001

SELS HAS ISSUED SEVERE THUNDERSTORM WATCH 20 FOR A GOOD PORTION OF
CWA VALID UNTIL 2 AM CST.  SINCE ZONES ALREADY MENTION THUNDERSTORMS
WITH SOME LOCALLY SEVERE IN THE BODY MOST LIKELY WONT UPDATE ATTM.

ONE HEFTY CALL HAS MADE ITS WAY ACROSS THE RIO GRANDE AND ACROSS VAL
VERDE COUNTY INTO EDWARDS COUNTY DURING THE PAST HOUR.  NO REPORTS
OF SEVERE WEATHER WITH THIS STORM AS OF YET BUT RADAR DISPLAYS HAD
GOOD DBZ AND VIL LEVELS WITH THE CELL PLUS A TVS ALARM.  FIRST WENT
WITH A SEVERE THUNDERSTORM WARNING FOR VAL VERDE COUNTY AS IT MOVED
ACROSS THE RIVER THEN UPGRADED TO TORNADO WARNING WHEN THE CELL
STARTED INCREASING IN INTENSITY AND BECAME A RIGHT MOVER.  THEN THE
TVS ALARMED.  STILL MORE ACTIVITY SOUTHWEST OF THIS INITIAL
DEVELOPMENT SO LOOKS LIKE THE REST OF THIS EVENING AND EARLY FRIDAY
MORNING WILL BE ACTIVE ESPECIALLY ACROSS THE HILL COUNTRY INTO
CENTRAL TEXAS.

GOT OUR FIRST LOOK AT SCAN IN THE NEW AWIPS LOAD.  SEEMS TO BE
WORKING OKAY.

.EWX...NONE.

In the hours before

Local storm report, Feb 16, 12:00 AM CST, 30 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO, TX
1200 AM CST THU FEB 16 2001

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

0840 PM    COMSTOCK                  TX   1.00 INCH HAIL 02/15/01
           VALVERDE                        REPORTED BY OBSERVER

0900 PM    LOMA ALTA                 TX   1.00 INCH HAIL
02/15/01   VALVERDE                       REPORTED BY CO-OP
                                          OBSERVERS

0910 PM    LOMA ALTA                 TX   40 MPH TSTM WIND GUST
02/15/01   VALVERDE                       REPORTED BY OBSERVER

0910 PM    LOMA ALTA                 TX   1.75 INCH HAIL
02/15/01   VALVERDE                       REPORTED BY CO-OP
                                          OBSERVERS

1030 PM    20 W ROCKSPRINGS          TX   0.50 INCH HAIL
02/15/01   EDWARDS                        REPORTED BY LAW ENFORCEMENT

1025 PM    DEL RIO                   TX   0.50 INCH HAIL
02/15/01   VAL VERDE                      REPORTED BY LAW
                                          ENFORCEMENT

1025 PM    DEL RIO                   TX   1.00 INCH HAIL
02/15/01   VAL VERDE                      REPORTED BY CO-OP
                                          OBSERVERS

1115 PM    20 SW DEL RIO             TX   0.50 INCH HAIL
02/15/01   VAL VERDE                      REPORTED BY LAW
                                          ENFORCEMENT

1025 PM    DEL RIO                   TX   WIND DAMAGE
02/15/01   VAL VERDE                      TREE BLOWN DOWN
                                          REPORTED BY OBSERVER

1115 PM    DEL RIO                   TX   0.50 INCH HAIL
02/15/01   VAL VERDE                      REPORTED BY LAW
                                          ENFORCEMENT

1100 PM    DEL RIO                   TX   WIND DAMAGE
02/15/01   VAL VERDE                      SIGNS AND BARACADES BLOWN
                                          DOWN REPORTED BY LAW
                                          ENFORCEMENT

1025 PM    DEL RIO                   TX   40 MPH TSTM WIND GUST
02/15/01   VAL VERDE                      REPORTED BY CO-OP
                                          OBSERVERS

1140 PM    UTOPIA                    TX   0.50 INCH HAIL
02/15/01   UVALDE                         ZREPORTED BY CO-OP
                                          OBSERVER

The office that day

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

Issued	Product	Office	Counties	Lasted
Feb 15, 8:13 PM CST	Severe Thunderstorm Warning	EWX	Val Verde	62 min
Feb 15, 8:46 PM CST	Tornado Warning	EWX	Edwards, Val Verde	29 min
Feb 15, 9:20 PM CST	Severe Thunderstorm Warning	EWX	Edwards	25 min
Feb 15, 10:07 PM CST	Severe Thunderstorm Warning	EWX	Edwards	38 min
Feb 15, 10:29 PM CST	Severe Thunderstorm Warning	EWX	Edwards, Kinney, Val Verde	46 min
Feb 15, 11:08 PM CST	Severe Thunderstorm Warning	EWX	Real, Uvalde	52 min
Feb 15, 11:35 PM CST	Severe Thunderstorm Warning	EWX	Bandera, Real, Uvalde	55 min
Feb 15, 11:35 PM CST	Severe Thunderstorm Warning	EWX	Kerr	55 min
Feb 16, 12:45 AM CST	Severe Thunderstorm Warning	EWX	Bandera, Kendall, Kerr	45 min
Feb 16, 12:45 AM CST	Severe Thunderstorm Warning	EWX	Medina	45 min
Feb 16, 1:15 AM CST	Severe Thunderstorm Warning	EWX	Bandera, Bexar, Medina	45 min

Nearby

Severe Thunderstorm Warnings in Texas, 2001 Every 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; the sounding from the Mesonet's radiosonde archive.