Alert archive / Texas / Tornado Warnings in 2002

Tornado Warning 50, NWS Austin/San Antonio, TX

December 30, 2002Williamson County, Texas

NWS Austin/San Antonio, TX issued this tornado warning at Dec 30, 2002, 4:22 PM CST for Williamson County, Texas. It was in force for 53 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 30, 2002, 4:22 PM CST (22:22 UTC)
Expired: Dec 30, 2002, 5:15 PM CST
In force: 53 min
Issued by: NWS Austin/San Antonio, TX
Area: Counties, with a storm outline in the text

County Williamson 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
Dec 30, 12:00 PM CST	Tornado Watch	SPC	6 hr

The nearest sounding before it

Fort Worth, TX (KFWD), launched 12:00Z, 10.4 hours before the alert went out and 254 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: 966 J/kg
Mixed-layer CIN: -128 J/kg
Mixed-layer LCL: 575 m above ground
0-6 km bulk shear: 59 kt
0-1 km storm-relative helicity: 201 m²/s²
0-3 km storm-relative helicity: 162 m²/s²
Significant tornado parameter: 0.5
Supercell composite: 1.5

Open this sounding in Storm Lab

The text

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

720 
WFUS54 KEWX 302222
TORSAT
TXC491-302315-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
422 PM CST MON DEC 30 2002

THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS ISSUED A

* TORNADO WARNING FOR THE FOLLOWING COUNTIES IN TEXAS...
  WILLIAMSON

* UNTIL 515 PM CST

* AT 422 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  THUNDERSTORM WITH STRONG SIGNS THAT A TORNADO IS DEVELOPING 3 MILES
  SOUTHWEST OF TAYLOR...MOVING NORTHEAST AT 20 MPH.

* THE TORNADO PRODUCING STORM IS EXPECTED TO BE...
  OVER TAYLOR AT 430 PM


LAT...LON 3054 9760 3044 9739 3050 9717 3072 9736

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Dec 30, 1:26 PM CST	Severe Thunderstorm Warning	EWX	Kerr, Real	64 min
Dec 30, 1:48 PM CST	Severe Thunderstorm Warning	EWX	Burnet, Williamson	42 min
Dec 30, 1:53 PM CST	Severe Thunderstorm Warning	EWX	Medina	37 min
Dec 30, 1:57 PM CST	Severe Thunderstorm Warning	EWX	Bexar	63 min
Dec 30, 2:05 PM CST	Tornado Warning	EWX	Bexar	55 min
Dec 30, 2:26 PM CST	Tornado Warning	EWX	Comal	64 min
Dec 30, 3:05 PM CST	Tornado Warning	EWX	Hays	55 min
Dec 30, 3:18 PM CST	Tornado Warning	EWX	Caldwell	57 min
Dec 30, 3:28 PM CST	Severe Thunderstorm Warning	EWX	Bexar	62 min
Dec 30, 3:29 PM CST	Severe Thunderstorm Warning	EWX	Travis	61 min
Dec 30, 3:50 PM CST	Severe Thunderstorm Warning	EWX	Guadalupe	55 min
Dec 30, 3:53 PM CST	Severe Thunderstorm Warning	EWX	Comal	52 min
Dec 30, 3:58 PM CST	Tornado Warning	EWX	Bastrop	62 min
Dec 30, 3:59 PM CST	Severe Thunderstorm Warning	EWX	Williamson	61 min
Dec 30, 5:00 PM CST	Severe Thunderstorm Warning	EWX	Gonzales	60 min
Dec 30, 5:11 PM CST	Tornado Warning	EWX	Bastrop, Fayette, Lee	64 min

Nearby

Tornado Warnings in Texas, 2002 Every tornado warning in 2002 Tornadoes 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.