Alert archive / Texas / Tornado Warnings in 2001

Tornado Warning 41, NWS Austin/San Antonio, TX

November 15, 2001Caldwell County, Guadalupe County, Texas

NWS Austin/San Antonio, TX issued this tornado warning at Nov 15, 2001, 6:32 PM CST for Caldwell County, Guadalupe County, Texas. It was in force for 73 min. 2 reports came from 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, with what was reported inside it.

The facts

Issued: Nov 15, 2001, 6:32 PM CST (00:32 UTC)
Expired: Nov 15, 2001, 7:45 PM CST
In force: 73 min
Issued by: NWS Austin/San Antonio, TX
Area: Whole counties; the outline is the Mesonet’s reconstruction

Counties Caldwell County, TX, Guadalupe County, TX

The radar

The Austin/San Antonio radar (KEWX), 11 km from the middle of the area, began a volume at 00:29 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.

What was reported inside it

Time	Report	Where	Remark
Nov 15, 6:35 PM CST	Tornado F0	New Braunfels, TX	An F0 tornado formed just east of New Braunfels in Comal County and moved northeastward toward the National Weather Service Office near the New Braunfels Airport in Guadalupe County. The tornado was mostly in open country in Comal County and caused no signifi
Nov 15, 6:37 PM CST	Tornado F0	New Braunfels, TX	The tornado listed in Comal County above moved into Guadalupe County and dissipated after causing extensive roof damage to two barns and scattered debris in various directions. One barn was completely de-roofed. Some of the metal tin in second barn was lifted

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 watch it was issued in

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

Issued	Product	Office	Lasted
Nov 15, 5:45 PM CST	Tornado Watch	SPC	5 hr

The nearest sounding before it

Corpus Christi, TX (KCRP), launched 00:00Z, 0.5 hours before the alert went out and 231 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: 2644 J/kg
Mixed-layer CIN: -1 J/kg
Mixed-layer LCL: 634 m above ground
0-6 km bulk shear: 41 kt
0-1 km storm-relative helicity: 156 m²/s²
0-3 km storm-relative helicity: 221 m²/s²
Significant tornado parameter: 3.0
Supercell composite: 15.4

Open this sounding in Storm Lab

The text

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

933 
WFUS54 KEWX 160032
TORSAT
TXC055-187-160145-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
632 PM CST THU NOV 15 2001

THE NATIONAL WEATHER SERVICE HAS ISSUED A

* TORNADO WARNING FOR THE FOLLOWING COUNTIES IN TEXAS...
  CALDWELL
  GUADALUPE

* UNTIL 745 PM CST

* AT 632 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  THUNDERSTORM WITH STRONG ROTATION THAT MAY PRODUCE A TORNADO AT ANY
  TIME 13 MILES SOUTHWEST OF MARTINDALE...OR ABOUT 7 MILES EAST OF
  NEW BRAUNFELS...MOVING NORTHEAST AT 10 MPH.

* THE TORNADO PRODUCING STORM IS EXPECTED TO BE...
  2 MILES SOUTH OF MARTINDALE AT 730 PM

* THIS WARNING INCLUDES LOCATIONS IN AND AROUND...
  MARTINDALE


LAT...LON 2968 9811 2959 9802 2978 9763 3000 9773

The office that day

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

Issued	Product	Office	Counties	Lasted
Nov 15, 6:40 PM CST	Severe Thunderstorm Warning	EWX	Bexar	65 min
Nov 15, 7:37 PM CST	Severe Thunderstorm Warning	EWX	Guadalupe, Wilson	53 min
Nov 15, 9:00 PM CST	Flash Flood Warning	EWX	Bastrop, Caldwell, Comal, Guadalupe, Hays, Lee and 2 more	5 hr
Nov 15, 11:13 PM CST	Flash Flood Warning	EWX	Guadalupe	2 hr
Nov 15, 11:15 PM CST	Severe Thunderstorm Warning	EWX	Bastrop, Lee	75 min
Nov 16, 2:00 AM CST	Flash Flood Warning	EWX	Lee	2 hr
Nov 16, 12:03 PM CST	Flash Flood Warning	EWX	Bandera, Kendall, Kerr	3 hr
Nov 16, 1:01 PM CST	Severe Thunderstorm Warning	EWX	Kinney	59 min

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; radar from the NEXRAD Level II archive.