Alert archive / Texas / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 1, NWS Austin/San Antonio, TX

February 22, 2000Edwards County, Texas

NWS Austin/San Antonio, TX issued this severe thunderstorm warning at Feb 22, 2000, 7:47 PM CST for Edwards County, Texas. It was in force for 28 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, 7:47 PM CST (01:47 UTC)
Expired: Feb 22, 2000, 8:15 PM CST
In force: 28 min
Issued by: NWS Austin/San Antonio, TX
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Edwards County, TX

The radar

The Laughlin AFB radar (KDFX), 105 km from the middle of the area, began a volume at 01:47 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 watch it was issued in

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

Issued	Product	Office	Lasted
Feb 22, 7:00 PM CST	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Del Rio, TX (KDRT), launched 00:00Z, 1.8 hours before the alert went out and 98 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 230200 COR
SVRSAT
TXC137-230215-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
747 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...
  EDWARDS COUNTY

* UNTIL 815 PM CST

* AT 747 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM OVER EDWARDS COUNTY...OR ABOUT 20 MILES
  NORTHWEST OF ROCKSPRINGS...MOVING NORTHEAST AT 20 MPH.

* EXPECT THIS STORM TO PRODUCE LARGE HAIL AND DAMAGING WINDS.

A SEVERE THUNDERSTORM WATCH IS IN EFFECT. SEVERE THUNDERSTORMS CAN 
AND DO PRODUCE TORNAD8OES WITH LITTLE OR NO ADVANCE WARNING. PREPARE 
TO MOVE TO A PLACE OF SAFETY IN A STURDY STRUCTURE SUCH AS A 
BASEMENT OR SMALL INTERIOR ROOM IF A TORNADO IS SPOTTED.

.END/ LAT...LON 3020 10063 3007 10049 3024 10023 3027 10045

The office that day

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

Issued	Product	Office	Counties	Lasted
Feb 22, 8:08 PM CST	Tornado Warning	EWX	Edwards	67 min
Feb 22, 8:19 PM CST	Severe Thunderstorm Warning	EWX	Val Verde	56 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.