Alert archive / Texas / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 130, NWS Austin/San Antonio, TX

December 23, 2002Medina County, Texas

NWS Austin/San Antonio, TX issued this severe thunderstorm warning at Dec 23, 2002, 5:26 PM CST for Medina County, Texas. It was in force for 64 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Dec 23, 2002, 5:26 PM CST (23:26 UTC)
Expired: Dec 23, 2002, 6:30 PM CST
In force: 64 min
Issued by: NWS Austin/San Antonio, TX
Area: Counties, with a storm outline in the text

County Medina County, TX

The radar

The Laughlin AFB radar (KDFX), 109 km from the middle of the area, began a volume at 23:29 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
Dec 23, 3:35 PM CST	Severe Thunderstorm Watch	SPC	4 hr

The nearest sounding before it

Del Rio, TX (KDRT), launched 12:00Z, 11.4 hours before the alert went out and 163 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: 122 J/kg
Mixed-layer CIN: -129 J/kg
Mixed-layer LCL: 662 m above ground
0-6 km bulk shear: 64 kt
0-1 km storm-relative helicity: 187 m²/s²
0-3 km storm-relative helicity: 203 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.4

Open this sounding in Storm Lab

The text

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

701 
WUUS54 KEWX 232326
SVRSAT
TXC325-240030-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
525 PM CST MON DEC 23 2002

THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS ISSUED A

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

* UNTIL 630 PM CST

* AT 525 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED AN
AREA OF SEVERE THUNDERSTORMS...DEVELOPING EASTWARD OVER MEDINA 
COUNTY...AND INCREASING IN STRENGTH.  THESE THUNDERSTORMS WERE
MOVING EAST AT 40 MPH.  

STRONG DAMAGING WINDS...HAIL...BRIEF HEAVY RAIN...AND FREQUENT
DANGEROUS LIGHTNING ARE EXPECTED WITH THESE THUNDERSTORMS OVER
MEDINA COUNTY THROUGH 630 PM CST.

LAT...LON 2915 9934 2914 9891 2958 9888 2960 9933

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Dec 23, 2:50 AM CST	Severe Thunderstorm Warning	EWX	Bandera, Bexar, Kendall	25 min
Dec 23, 3:49 AM CST	Severe Thunderstorm Warning	EWX	Blanco, Burnet, Llano	41 min
Dec 23, 4:03 AM CST	Severe Thunderstorm Warning	EWX	Hays, Travis	42 min
Dec 23, 6:07 AM CST	Tornado Warning	EWX	Hays, Travis	53 min
Dec 23, 7:00 AM CST	Tornado Warning	EWX	Travis, Williamson	30 min
Dec 23, 7:29 AM CST	Tornado Warning	EWX	Williamson	31 min
Dec 23, 7:43 AM CST	Tornado Warning	EWX	DeWitt	47 min
Dec 23, 8:08 AM CST	Severe Thunderstorm Warning	EWX	Fayette, Lavaca	52 min
Dec 23, 8:58 AM CST	Severe Thunderstorm Warning	EWX	Fayette	47 min
Dec 23, 9:03 AM CST	Severe Thunderstorm Warning	EWX	Lee	27 min
Dec 23, 9:16 AM CST	Tornado Warning	EWX	Fayette	29 min
Dec 23, 4:28 PM CST	Severe Thunderstorm Warning	EWX	Edwards	62 min
Dec 23, 4:49 PM CST	Severe Thunderstorm Warning	EWX	Real	56 min
Dec 23, 5:06 PM CST	Tornado Warning	EWX	Kerr	24 min
Dec 23, 5:12 PM CST	Tornado Warning	EWX	Kerr	18 min
Dec 23, 5:23 PM CST	Severe Thunderstorm Warning	EWX	Kerr	52 min
Dec 23, 5:43 PM CST	Severe Thunderstorm Warning	EWX	Bexar	62 min

Nearby

Severe Thunderstorm Warnings in Texas, 2002 Every severe thunderstorm warning in 2002

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.