Alert archive / Texas / Tornado Warnings in 2001

Tornado Warning 7, NWS San Angelo, TX

September 8, 2001Callahan County, Texas

NWS San Angelo, TX issued this tornado warning at Sep 8, 2001, 8:30 PM CDT for Callahan County, Texas. It was in force for 30 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: Sep 8, 2001, 8:30 PM CDT (01:30 UTC)
Expired: Sep 8, 2001, 9:00 PM CDT
In force: 30 min
Issued by: NWS San Angelo, TX
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Callahan County, TX

What was reported inside it

Time	Report	Where	Remark
Sep 8, 8:40 PM CDT	Tornado F0	Rowden, TX	A tornado briefly touched down near Rowden in central Callahan County, but no damage was reported.
Sep 8, 8:50 PM CDT	Hail 2.75	Rowden, TX	Baseball size hail reported in the small community of Rowden.

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
Sep 8, 5:45 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Fort Worth, TX (KFWD), launched 00:00Z, 1.5 hours before the alert went out and 201 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: 3809 J/kg
Mixed-layer CIN: -5 J/kg
Mixed-layer LCL: 1100 m above ground
0-6 km bulk shear: 27 kt
0-1 km storm-relative helicity: 22 m²/s²
0-3 km storm-relative helicity: 95 m²/s²
Significant tornado parameter: 0.7
Supercell composite: 4.0

Open this sounding in Storm Lab

The text

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

882 
WFUS54 KSJT 090131
TORSJT
TXC059-090200-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE SAN ANGELO TX
830 PM CDT SAT SEP 8 2001

THE NATIONAL WEATHER SERVICE IN SAN ANGELO HAS ISSUED A

* TORNADO WARNING FOR...
  CALLAHAN COUNTY IN NORTH CENTRAL TEXAS

* UNTIL 900 PM CDT

* AT 828 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  DEVELOPING TORNADO 4 MILES SOUTHWEST OF PUTNAM...OR ABOUT 10 MILES
  SOUTHEAST OF BAIRD...MOVING EAST AT 15 MPH.

* THE TORNADO IS EXPECTED TO BE NEAR...
   ATWELL AT 840 PM CDT

MOVE TO AN INTERIOR ROOM OR CLOSET ON THE LOWEST FLOOR OF A STRONG
BUILDING AND STAY AWAY FROM WINDOWS. USE BLANKETS OR PILLOWS TO COVER
YOUR BODY. IF YOU ARE IN A MOBILE HOME OR VEHICLE...EVACUATE AND GET
INSIDE A SUBSTANTIAL SHELTER.

LAT...LON 3234 9946 3211 9948 3223 9913 3242 9913

The office that day

Everything else NWS San Angelo, TX issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Sep 8, 7:38 PM CDT	Severe Thunderstorm Warning	SJT	Shackelford	37 min
Sep 8, 8:04 PM CDT	Severe Thunderstorm Warning	SJT	Callahan	41 min
Sep 8, 8:27 PM CDT	Flash Flood Warning	SJT	Shackelford	3 hr
Sep 8, 9:01 PM CDT	Tornado Warning	SJT	Callahan	44 min
Sep 8, 9:18 PM CDT	Severe Thunderstorm Warning	SJT	Brown, Coleman	57 min
Sep 8, 9:33 PM CDT	Tornado Warning	SJT	Brown, Coleman	42 min
Sep 8, 10:12 PM CDT	Tornado Warning	SJT	Brown	33 min
Sep 8, 10:47 PM CDT	Severe Thunderstorm Warning	SJT	Brown	43 min
Sep 8, 10:51 PM CDT	Severe Thunderstorm Warning	SJT	Coleman	54 min
Sep 9, 12:29 AM CDT	Severe Thunderstorm Warning	SJT	Coleman	46 min
Sep 9, 1:16 AM CDT	Severe Thunderstorm Warning	SJT	Coleman	29 min
Sep 9, 1:45 AM CDT	Severe Thunderstorm Warning	SJT	Coleman	60 min
Sep 9, 7:08 AM CDT	Flash Flood Warning	SJT	Menard	3 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.