Alert archive / Texas / Tornado Warnings in 2001

Tornado Warning 6, NWS San Angelo, TX

June 12, 2001Nolan County, Texas

NWS San Angelo, TX issued this tornado warning at Jun 12, 2001, 9:58 PM CDT for Nolan County, Texas. It was in force for 32 min. No storm report in the archive falls 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.

The facts

Issued: Jun 12, 2001, 9:58 PM CDT (02:58 UTC)
Expired: Jun 12, 2001, 10:30 PM CDT
In force: 32 min
Issued by: NWS San Angelo, TX
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Nolan County, TX

The radar

The San Angelo radar (KSJT), 94 km from the middle of the area, began a volume at 02:59 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.

The nearest sounding before it

Midland Regional, TX (KMAF), launched 00:00Z, 3.0 hours before the alert went out and 170 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: 129 J/kg
Mixed-layer CIN: -6 J/kg
Mixed-layer LCL: 4269 m above ground
0-6 km bulk shear: 13 kt
0-1 km storm-relative helicity: 8 m²/s²
0-3 km storm-relative helicity: 20 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

240 
WFUS54 KSJT 130258
TORSJT
TXC353-130330-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE SAN ANGELO TX
958 PM CDT TUE JUN 12 2001

THE NATIONAL WEATHER SERVICE IN SAN ANGELO HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHERN NOLAN COUNTY IN NORTHWEST TEXAS

* UNTIL 1030 PM CDT

* AT 954 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  DEVELOPING TORNADO 5 MILES SOUTH OF MARYNEAL...OR ABOUT 11 MILES
  NORTHWEST OF BLACKWELL...MOVING NORTHEAST AT 20 MPH.

* THE TORNADO IS EXPECTED TO BE NEAR...
   MARYNEAL AT 1005 PM CDT
   NOLAN AT 1030 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 3220 10060 3206 10048 3219 10017 3244 10025

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 Jun 12, 6:52 PM CDT, 3 hours 6 minutes earlier.

Area forecast discussion, Jun 12, 6:52 PM CDT, 3 hours 6 minutes before

WEST CENTRAL TEXAS FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE SAN ANGELO TX
652 PM CDT TUE JUN 12 2001

WITH ONGOING ACTIVITY ALONG DRYLINE FROM IRAAN AND GARDEN CITY...TO BIG
SPRING AND SNYDER...HAVE DECIDED TO INTRODUCE EVENING POP WEST HALF.
DEBRIS TO ALSO RESULT IN PARTLY CLOUDY SKIES MOST OF NIGHT. UPDATE
ALREADY HIT THE STREETS.

.SJT...CAUTION ON AREA LAKES BIG COUNTRY TONIGHT.

17

In the hours before

Special weather statement, Jun 12, 7:07 PM CDT, 2 hours 51 minutes before

TXZ049-054-064>066-071>073-076>078-098-099-113-114-127-128-139-140-
154-155-168>170-130400-

WEST CENTRAL TEXAS HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SAN ANGELO TX
707 PM CDT TUE JUN 12 2001

...WIDELY SCATTERED NON SEVERE THUNDERSTORMS ARE POSSIBLE OVER THE
WESTERN PORTIONS OF WEST CENTRAL TEXAS THIS EVENING...

WIDELY SCATTERED THUNDERSTORMS HAVE DEVELOPED ALONG THE DRYLINE THIS
EVENING FROM IRAAN AND GARDEN CITY...TO BIG SPRING AND SYNDER. THESE
STORMS AREA MOVING EAST AT 20 MPH...AND MAY REACH OZONA...SAN ANGELO
AND SWEETWATER BY 900 PM. THESE STORMS ARE MOVING INTO DEEPER
MOISTURE AND GREATER INSTABILITY...SO THEY MAY INTENSIFY. WITH THE
LOSS OF HEATING...THESE STORMS SHOULD QUICKLY DISSIPATE BY 10 OR 11
PM.

WIND GUSTS TO 45 MPH ARE POSSIBLE IN THE STRONGER STORMS.
TEMPERATURES REMAIN TOO WARM ALOFT TO SUPPORT LARGE HAIL.

SPOTTER ACTIVATION IS NOT ANTICIPATED.

FOR THE SOUTHWEST TEXAS AND SOUTHEAST NEW MEXICO OUTLOOK SEE PRODUCT
LBBSPSMAF. FOR THE SOUTH PLAINS OUTLOOK SEE PRODUCT LBBSPSLBB. FOR
THE CENTRAL OKLAHOMA OUTLOOK SEE PRODUCT OKCSPSOKC. FOR THE NORTH
TEXAS OUTLOOK SEE PRODUCT FTWSPSFTW. FOR THE SOUTH CENTRAL TEXAS
OUTLOOK SEE PRODUCT SATSPSSAT.

14

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 12, 8:57 PM CDT	Severe Thunderstorm Warning	SJT	Fisher, Nolan	63 min
Jun 12, 9:47 PM CDT	Tornado Warning	SJT	Fisher, Nolan	28 min
Jun 12, 10:15 PM CDT	Severe Thunderstorm Warning	SJT	Jones	30 min
Jun 13, 4:47 PM CDT	Severe Thunderstorm Warning	SJT	Throckmorton	43 min
Jun 13, 5:05 PM CDT	Severe Thunderstorm Warning	SJT	Shackelford	40 min
Jun 13, 5:28 PM CDT	Severe Thunderstorm Warning	SJT	Throckmorton	62 min
Jun 13, 6:28 PM CDT	Severe Thunderstorm Warning	SJT	Throckmorton	62 min
Jun 13, 6:44 PM CDT	Flash Flood Warning	SJT	Throckmorton	106 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.