Alert archive / Texas / Tornado Warnings in 2001

Tornado Warning 10, NWS San Angelo, TX

September 8, 2001Brown County, Texas

NWS San Angelo, TX issued this tornado warning at Sep 8, 2001, 10:12 PM CDT for Brown County, Texas. It was in force for 33 min. 1 report 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, 10:12 PM CDT (03:12 UTC)
Expired: Sep 8, 2001, 10:45 PM CDT
In force: 33 min
Issued by: NWS San Angelo, TX
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Brown County, TX

What was reported inside it

Time	Report	Where	Remark
Sep 8, 10:40 PM CDT	Hail 0.75	May, 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 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, 3.2 hours before the alert went out and 190 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.

326 
WFUS54 KSJT 090313
TORSJT
TXC049-090345-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE SAN ANGELO TX
1012 PM CDT SAT SEP 8 2001

THE NATIONAL WEATHER SERVICE IN SAN ANGELO HAS ISSUED A

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

* UNTIL 1045 PM CDT

* AT 1008 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  DEVELOPING TORNADO 5 MILES SOUTH OF CROSS CUT...OR ABOUT 22        
  MILES NORTHWEST OF BROWNWOOD...MOVING EAST AT 15 MPH.

* THE TORNADO IS EXPECTED TO BE NEAR...
   MAY AT 1040 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 3207 9918 3188 9918 3193 9885 3207 9894

What forecasters said that day

The local office's own words before this tornado warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS San Angelo, TX wrote its last area forecast discussion before this tornado warning went out at Sep 8, 2:54 PM CDT, 7 hours 18 minutes earlier.

Area forecast discussion, Sep 8, 2:54 PM CDT, 7 hours 18 minutes before

WEST CENTRAL TEXAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN ANGELO TX
254 PM CDT SAT SEP 8 2001

SPC PONDERING WATCH IN VICINITY OF STALLED FRONT ACROSS THE BIG
COUNTRY. CAPES IN EXCESS OF 4000 J/KG ACROSS THE EASTERN HALF OF
THE SJT CWFA. SAVING GRACE STRONG CAP. BUT CAP SOON TO ERODE AS
LARGE SCALE VERTICAL MOTION ASSOCIATED WITH POTENT SHORTWAVE
TROUGH ARRIVES. STAY TUNED.

WITH EXTREME INSTABILITY...COPIOUS MOISTURE AND FAVORABLE
DYNAMICS...OPTED FOR LIKELY OR CATEGORICAL POPS ACROSS MOST OF
THE CWFA. GOING TO MENTION POSSIBILITY OF LARGE HAIL...DAMAGING
WINDS AND LOCALLY HEAVY RAINFALL TONIGHT AS STRONG COLD FRONT
PLOWS SOUTHWARD.

LINGERING SHOWERS AND THUNDERSTORMS EXPECTED SUNDAY OVER THE
SOUTHERN HALF. GRADUAL CLEARING SUNDAY NIGHT AND MONDAY AS HIGH
PRESSURE BUILDS AT THE SURFACE. TUESDAY THROUGH SATURDAY BENIGN
WITH AMPLE SUNSHINE AND SEASONAL TEMPERATURES.

PRELIMS...

ABI 063/076/057/082 7000
SJT 065/075/059/085 6200
JCT 068/074/062/084 8400

.SJT...NONE.

17

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, 8:30 PM CDT	Tornado Warning	SJT	Callahan	30 min
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, 10:47 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.