Alert archive / Texas / Tornado Watches in 2001

Tornado Watch 143

April 14, 200122 counties in Texas

The Storm Prediction Center issued this tornado watch at Apr 14, 2001, 5:30 PM CDT for 22 counties in Texas. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued: Apr 14, 2001, 5:30 PM CDT (22:30 UTC)
Expired: Apr 14, 2001, 10:00 PM CDT
In force: 5 hr
Issued by: the Storm Prediction Center

All 22 counties

Archer County, TX, Baylor County, TX, Callahan County, TX, Coke County, TX, Crockett County, TX, Fisher County, TX, Haskell County, TX, Irion County, TX, Jones County, TX, Knox County, TX, Mitchell County, TX, Nolan County, TX, Reagan County, TX, Runnels County, TX, Schleicher County, TX, Shackelford County, TX, Sterling County, TX, Stonewall County, TX, Taylor County, TX, Throckmorton County, TX, Tom Green County, TX, Young County, TX

The radar

The San Angelo radar (KSJT), 45 km from the middle of the area, began a volume at 22:34 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.

Warnings issued inside it

6 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

Issued	Product	Office	Counties	Lasted
Apr 14, 5:33 PM CDT	Severe Thunderstorm Warning	SJT	Crockett	57 min
Apr 14, 6:02 PM CDT	Severe Thunderstorm Warning	SJT	Jones	58 min
Apr 14, 6:30 PM CDT	Severe Thunderstorm Warning	SJT	Fisher	60 min
Apr 14, 6:30 PM CDT	Severe Thunderstorm Warning	SJT	Crockett	60 min
Apr 14, 6:59 PM CDT	Severe Thunderstorm Warning	SJT	Haskell, Jones	61 min
Apr 14, 7:22 PM CDT	Severe Thunderstorm Warning	OUN	Knox	38 min

The nearest sounding before it

Midland Regional, TX (KMAF), launched 12:00Z, 10.5 hours before the alert went out and 137 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: 1918 J/kg
Mixed-layer CIN: -12 J/kg
Mixed-layer LCL: 548 m above ground
0-6 km bulk shear: 63 kt
0-1 km storm-relative helicity: 123 m²/s²
0-3 km storm-relative helicity: 74 m²/s²
Significant tornado parameter: 1.4
Supercell composite: 5.2

Open this sounding in Storm Lab

The text

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

000 
WWUS9 KMKC 142223
SEL3  

SEL3  
MKC WW 142219
TXZ000-150300-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 143
STORM PREDICTION CENTER NORMAN OK
519 PM CDT SAT APR 14 2001

THE STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF

   WEST TEXAS                              

EFFECTIVE THIS SATURDAY AFTERNOON AND EVENING FROM 530 PM UNTIL
1000 PM CDT.

TORNADOES...HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS
TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE TORNADO WATCH AREA IS ALONG AND 50 STATUTE MILES EAST AND WEST
OF A LINE FROM 95 MILES SOUTHWEST OF SAN ANGELO TEXAS TO 90 MILES
NORTH NORTHEAST OF ABILENE TEXAS.

REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR
TORNADOES AND SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA. 
PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING
WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS AND POSSIBLE
WARNINGS.

OTHER WATCH INFORMATION...  CONTINUE...WW 140...WW 141...WW 142...

DISCUSSION...SCATTERED INTENSE THUNDERSTORMS HAVE BEGUN TO FORM
ALONG THE DRYLINE EXTENDING FROM WEST OF ABI TO EAST OF FST.  VERY
LARGE HAIL APPEARS TO BE THE PRIMARY THREAT.  HOWEVER...SUFFICIENT
VERTICAL SHEAR IS PRESENT TO PROMOTE SUPERCELLS AND ISOLATED
TORNADOES.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 2 INCHES.  EXTREME TURBULENCE AND SURFACE WIND
GU7STS TO 60 KNOTS.  A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. 
MEAN STORM MOTION VECTOR 27025.

...HART

;333,0981 302,1004 302,1022 333,0995;

SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 14, 2:45 PM CDT	Tornado Watch	SPC	Archer, Baylor, Clay, Foard, Hardeman, Knox and 2 more	6 hr
Apr 14, 4:30 PM CDT	Tornado Watch	SPC	Bowie, Camp, Cass, Collin, Cooke, Delta and 12 more	6 hr

Nearby

Tornado Watches in Texas, 2001 Every tornado watch 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.