Alert archive / Texas / Tornado Warnings in 2001

Tornado Warning 3, NWS Austin/San Antonio, TX

March 8, 2001Comal County, Texas

NWS Austin/San Antonio, TX issued this tornado warning at Mar 8, 2001, 5:33 PM CST for Comal County, Texas. It was in force for 42 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: Mar 8, 2001, 5:33 PM CST (23:33 UTC)
Expired: Mar 8, 2001, 6:15 PM CST
In force: 42 min
Issued by: NWS Austin/San Antonio, TX
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Comal County, TX

The radar

The Austin/San Antonio radar (KEWX), 32 km from the middle of the area, began a volume at 23:32 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
Mar 8, 5:35 PM CST	Hail 1	Spring Branch, TX
Mar 8, 5:50 PM CST	Hail 1.75	Canyon Res, TX

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

Del Rio, TX (KDRT), launched 12:00Z, 11.6 hours before the alert went out and 252 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: 43 J/kg
Mixed-layer CIN: -123 J/kg
Mixed-layer LCL: 674 m above ground
0-6 km bulk shear: 73 kt
0-1 km storm-relative helicity: 214 m²/s²
0-3 km storm-relative helicity: 199 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

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

292 
WFUS54 KEWX 082332
TORSAT
TXC091-090015-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
533 PM CST THU MAR 8 2001

THE NATIONAL WEATHER SERVICE HAS ISSUED A

* TORNADO WARNING FOR THE FOLLOWING COUNTIES IN TEXAS...
  COMAL COUNTY

* UNTIL 615 PM CST

* AT 530 PM CST...HAM RADIO OPERATORS RELAYED A REPORT OF A 
  TORNADO 12 MILES WEST OF CANYON LAKE...OR 8 MILES NORTHWEST OF 
  SPRING BRANCH...MOVING SOUTHEAST AT 25 MPH.

* THE TORNADO PRODUCING STORM IS EXPECTED TO BE...
  OVER CANYON LAKE AT 550 PM CST


LAT...LON 2998 9835 2981 9855 2970 9816 2986 9809

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 8, 3:45 PM CST	Severe Thunderstorm Warning	EWX	Gillespie	45 min
Mar 8, 4:02 PM CST	Severe Thunderstorm Warning	EWX	Bexar, Guadalupe	43 min
Mar 8, 4:21 PM CST	Severe Thunderstorm Warning	EWX	Kendall, Kerr	54 min
Mar 8, 4:39 PM CST	Tornado Warning	EWX	Kendall	66 min
Mar 8, 4:50 PM CST	Severe Thunderstorm Warning	EWX	Wilson	40 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.