Alert archive / Texas / Tornado Warnings in 2001

Tornado Warning 18, NWS Austin/San Antonio, TX

May 20, 2001Burnet County, Texas

NWS Austin/San Antonio, TX issued this tornado warning at May 20, 2001, 8:29 PM CDT for Burnet County, Texas. It was in force for 31 min. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued: May 20, 2001, 8:29 PM CDT (01:29 UTC)
Expired: May 20, 2001, 9:00 PM CDT
In force: 31 min
Issued by: NWS Austin/San Antonio, TX
Area: Whole counties

County Burnet County, TX

What was reported inside it

Time	Report	Where	Remark
May 20, 8:50 PM CDT	Thunderstorm Wind	Burnet, TX	Trees were split and knocked over into homes by severe thunderstorm winds. An aircraft was flipped onto its top at the Burnet airport by the winds.

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The nearest sounding before it

Fort Worth, TX (KFWD), launched 00:00Z, 1.5 hours before the alert went out and 242 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: 1060 J/kg
Mixed-layer CIN: -18 J/kg
Mixed-layer LCL: 2345 m above ground
0-6 km bulk shear: 48 kt
0-1 km storm-relative helicity: 55 m²/s²
0-3 km storm-relative helicity: 134 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.6

Open this sounding in Storm Lab

The text

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

668 
WFUS54 KEWX 210134
TORSAT
TXC053-210200-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
829 PM CDT SUN MAY 20 2001

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

* TORNADO WARNING FOR THE FOLLOWING COUNTIES IN TEXAS...             
  BURNET...INCLUDING THE TOWN OF MARBLE FALLS...

* UNTIL 9 PM CDT

* AT 829 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A     
  THUNDERSTORM WITH STRONG SIGNS THAT A TORNADO IS DEVELOPING IN     
  THE VICINITY OF MARBLE FALLS...MOVING EAST AT 20 MPH.

* THE TORNADO PRODUCING STORM IS EXPECTED TO BE...
  IN THE MARBLE FALLS AREA UNTIL 845 PM CDT
  ALONG THE BURNET-TRAVIS-WILLIAMSON COUNTY LINE AROUND 9 PM CDT

The office that day

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

Issued	Product	Office	Counties	Lasted
May 20, 7:09 PM CDT	Severe Thunderstorm Warning	EWX	Llano	66 min
May 20, 7:10 PM CDT	Severe Thunderstorm Warning	EWX	Caldwell	65 min
May 20, 7:28 PM CDT	Severe Thunderstorm Warning	EWX	Karnes, Wilson	62 min
May 20, 7:51 PM CDT	Severe Thunderstorm Warning	EWX	Burnet	69 min
May 20, 8:45 PM CDT	Tornado Warning	EWX	Travis, Williamson	60 min
May 20, 9:47 PM CDT	Severe Thunderstorm Warning	EWX	Bastrop, Lee, Travis, Williamson	43 min
May 21, 6:39 AM CDT	Flash Flood Warning	EWX	Guadalupe	2 hr

Nearby

Tornado Warnings in Texas, 2001 Every tornado warning in 2001 Tornadoes 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.