Alert archive / Texas / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 2, NWS Austin/San Antonio, TX

February 22, 2000Val Verde County, Texas

NWS Austin/San Antonio, TX issued this severe thunderstorm warning at Feb 22, 2000, 8:19 PM CST for Val Verde County, Texas. It was in force for 56 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 22, 2000, 8:19 PM CST (02:19 UTC)
Expired: Feb 22, 2000, 9:15 PM CST
In force: 56 min
Issued by: NWS Austin/San Antonio, TX
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Val Verde County, TX

The radar

The Laughlin AFB radar (KDFX), 84 km from the middle of the area, began a volume at 02:22 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 nearest sounding before it

Del Rio, TX (KDRT), launched 00:00Z, 2.3 hours before the alert went out and 41 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: 2362 J/kg
Mixed-layer CIN: -17 J/kg
Mixed-layer LCL: 1410 m above ground
0-6 km bulk shear: 70 kt
0-1 km storm-relative helicity: 27 m²/s²
0-3 km storm-relative helicity: 155 m²/s²
Significant tornado parameter: 1.5
Supercell composite: 9.9

Open this sounding in Storm Lab

The text

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

000 
WUUS54 KEWX 230221
SVRSAT
TXC465-230315-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
819 PM CST TUE FEB 22 2000

THE NATIONAL WEATHER SERVICE IN AUSTIN/SAN ANTONIO HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR THE FOLLOWING COUNTIES IN TEXAS...
  VAL VERDE COUNTY

* UNTIL 915 PM CST

* AT 819 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 8 MILES NORTH OF COMSTOCK...MOVING SOUTHEAST AT
  30 MPH.

* THIS WARNING INCLUDES LOCATIONS IN AND AROUND...LAKE AMISTAD AND 
THE AREA BETWEEN HIGHWAYS 90 AND 377.

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.

THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH YOU SHOULD PREPARE
FOR DAMAGING WINDS IN EXCESS OF 55 MPH...LARGE HAIL...AND DEADLY
LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...PREFERABLY
INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS.

.END/ LAT...LON 2963 10122 2928 10081 2983 10079 3023 10085

The office that day

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

Issued	Product	Office	Counties	Lasted
Feb 22, 7:47 PM CST	Severe Thunderstorm Warning	EWX	Edwards	28 min
Feb 22, 8:08 PM CST	Tornado Warning	EWX	Edwards	67 min
Feb 22, 8:23 PM CST	Tornado Warning	EWX	Val Verde	67 min
Feb 22, 8:40 PM CST	Severe Thunderstorm Warning	EWX	Llano	65 min
Feb 22, 8:45 PM CST	Severe Thunderstorm Warning	EWX	Burnet	60 min
Feb 22, 8:47 PM CST	Severe Thunderstorm Warning	EWX	Gillespie	58 min
Feb 22, 8:54 PM CST	Severe Thunderstorm Warning	EWX	Real	66 min
Feb 22, 8:59 PM CST	Tornado Warning	EWX	Kinney	31 min
Feb 22, 9:07 PM CST	Tornado Warning	EWX	Edwards	38 min
Feb 22, 9:30 PM CST	Tornado Warning	EWX	Kinney	30 min
Feb 22, 9:46 PM CST	Severe Thunderstorm Warning	EWX	Williamson	59 min
Feb 22, 9:55 PM CST	Tornado Warning	EWX	Kinney	35 min
Feb 22, 10:06 PM CST	Tornado Warning	EWX	Uvalde	39 min
Feb 22, 10:36 PM CST	Tornado Warning	EWX	Uvalde	39 min
Feb 22, 11:10 PM CST	Severe Thunderstorm Warning	EWX	Medina	65 min
Feb 22, 11:30 PM CST	Severe Thunderstorm Warning	EWX	Frio, Uvalde, Zavala	60 min
Feb 22, 11:44 PM CST	Tornado Warning	EWX	Zavala	76 min

Nearby

Severe Thunderstorm Warnings in Texas, 2000 Every severe thunderstorm warning in 2000

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.