Alert archive / Texas / Tornado Watches in 2003

Tornado Watch 383

May 15, 200326 counties in Texas

The Storm Prediction Center issued this tornado watch at May 15, 2003, 4:05 PM CDT for 26 counties in Texas. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued
May 15, 2003, 4:05 PM CDT (21:05 UTC)
Expired
May 15, 2003, 10:00 PM CDT
In force
6 hr
Issued by
the Storm Prediction Center
All 26 counties

Borden County, TX, Briscoe County, TX, Castro County, TX, Childress County, TX, Cottle County, TX, Crosby County, TX, Dawson County, TX, Dickens County, TX, Fisher County, TX, Floyd County, TX, Gaines County, TX, Garza County, TX, Hale County, TX, Hall County, TX, Hockley County, TX, Kent County, TX, King County, TX, Lamb County, TX, Lubbock County, TX, Lynn County, TX, Motley County, TX, Parmer County, TX, Scurry County, TX, Stonewall County, TX, Swisher County, TX, Terry County, TX

The radar

The Lubbock radar (KLBB), 69 km from the middle of the area, began a volume at 21:08 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

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

IssuedProductOfficeCountiesLasted
May 15, 6:22 PM CDTSevere Thunderstorm WarningMAFScurry38 min
May 15, 6:39 PM CDTTornado WarningSJTFisher66 min
May 15, 7:17 PM CDTSevere Thunderstorm WarningLUBStonewall43 min
May 15, 7:41 PM CDTTornado WarningSJTFisher34 min

Discussions around it

SPC mesoscale discussions over the same counties from four hours before the watch to its end.

The nearest sounding before it

Amarillo Airport, TX (KAMA), launched 12:00Z, 9.1 hours before the alert went out and 162 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-pSkew-T log-p diagram, Amarillo Airport, TX at 12:00Z on 2003-05-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 95 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Amarillo Airport, TX at 12:00Z on 2003-05-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 88 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
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
95 J/kg
Mixed-layer CIN
-275 J/kg
Mixed-layer LCL
1781 m above ground
0-6 km bulk shear
43 kt
0-1 km storm-relative helicity
88 m²/s²
0-3 km storm-relative helicity
122 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.2

Open this sounding in Storm Lab

The text

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

000 
WWUS20 KWNS 152107
SEL3  
SPC WW 152105
TXZ000-160300-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 383 
NWS STORM PREDICTION CENTER NORMAN OK 
405 PM CDT THU MAY 15 2003

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

       WESTERN TEXAS

EFFECTIVE THIS THURSDAY AFTERNOON AND EVENING FROM 405 PM UNTIL
1000 PM CDT.

...THIS IS A PARTICULARLY DANGEROUS SITUATION...

DESTRUCTIVE TORNADOES...LARGE HAIL TO 3 INCHES IN DIAMETER...
THUNDERSTORM WIND GUSTS TO 70 MPH...AND DANGEROUS LIGHTNING ARE
POSSIBLE IN THESE AREAS.

THE TORNADO WATCH AREA IS ALONG AND 80 STATUTE MILES EAST AND WEST
OF A LINE FROM 40 MILES NORTH NORTHEAST OF PLAINVIEW TEXAS TO 80
MILES SOUTH SOUTHEAST OF LUBBOCK 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 379...WW 380...WW 381...WW
382...


DISCUSSION...SEVERE THUNDERSTORMS SHOULD DEVELOP RAPIDLY IN THE NEXT
HOUR OR SO AS STRONG LARGE SCALE ASCENT OVERRIDES A STRONGLY
UNSTABLE AIR MASS ACROSS WEST TX...AND CAPPING ERODES.	CAPE AND
SHEAR PARAMETERS REMAIN VERY FAVORABLE FOR TORNADIC
SUPERCELLS...INCLUDING A FEW SIGNIFICANT TORNADOES THROUGH THE MID
EVENING.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 3 INCHES. EXTREME TURBULENCE AND SURFACE WIND
GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500.
MEAN STORM MOTION VECTOR 26025.


...EVANS

344,1000 323,0995 323,1024 344,1025 

WWUS20 KWNS 152107
SEL3  
SPC WW 152105
TXZ000-160300-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 383 
NWS STORM PREDICTION CENTER NORMAN OK 
405 PM CDT THU MAY 15 2003

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

       WESTERN TEXAS

EFFECTIVE THIS THURSDAY AFTERNOON AND EVENING FROM 405 PM UNTIL
1000 PM CDT.

...THIS IS A PARTICULARLY DANGEROUS SITUATION...

DESTRUCTIVE TORNADOES...LARGE HAIL TO 3 INCHES IN DIAMETER...
THUNDERSTORM WIND GUSTS TO 70 MPH...AND DANGEROUS LIGHTNING ARE
POSSIBLE IN THESE AREAS.

THE TORNADO WATCH AREA IS ALONG AND 80 STATUTE MILES EAST AND WEST
OF A LINE FROM 40 MILES NORTH NORTHEAST OF PLAINVIEW TEXAS TO 80
MILES SOUTH SOUTHEAST OF LUBBOCK 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 379...WW 380...WW 381...WW
382...


DISCUSSION...SEVERE THUNDERSTORMS SHOULD DEVELOP RAPIDLY IN THE NEXT
HOUR OR SO AS STRONG LARGE SCALE ASCENT OVERRIDES A STRONGLY
UNSTABLE AIR MASS ACROSS WEST TX...AND CAPPING ERODES.	CAPE AND
SHEAR PARAMETERS REMAIN VERY FAVORABLE FOR TORNADIC
SUPERCELLS...INCLUDING A FEW SIGNIFICANT TORNADOES THROUGH THE MID
EVENING.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 3 INCHES. EXTREME TURBULENCE AND SURFACE WIND
GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500.
MEAN STORM MOTION VECTOR 26025.


...EVANS

344,1000 323,0995 323,1024 344,1025

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 14, 7:36 PM CDTMesoscale DiscussionSPCBowie, Red River114 min
May 14, 9:20 PM CDTMesoscale DiscussionSPCCass, Harrison, Marion115 min
May 14, 11:20 PM CDTMesoscale DiscussionSPCBell, Bosque, Coryell, Ellis, Falls, Freestone and 5 more115 min
May 14, 11:35 PM CDTSevere Thunderstorm WatchSPCCamp, Cass, Cherokee, Franklin, Gregg, Harrison and 8 more5 hr
May 14, 11:45 PM CDTSevere Thunderstorm WatchSPCAnderson, Bosque, Collin, Dallas, Delta, Denton and 16 more5 hr
May 15, 2:10 AM CDTMesoscale DiscussionSPCAnderson, Collin, Dallas, Denton, Ellis, Henderson and 13 more2 hr
May 15, 2:27 AM CDTMesoscale DiscussionSPCGregg, Harrison, Marion, Panola, Rusk, Shelby2 hr
May 15, 1:31 PM CDTMesoscale DiscussionSPCArmstrong, Briscoe, Carson, Castro, Dallam, Deaf Smith and 10 more119 min
May 15, 1:55 PM CDTTornado WatchSPCArmstrong, Carson, Collingsworth, Dallam, Deaf Smith, Donley and 13 more6 hr
May 15, 3:41 PM CDTMesoscale DiscussionSPCArmstrong, Baylor, Briscoe, Carson, Castro, Childress and 30 more94 min
May 15, 5:15 PM CDTMesoscale DiscussionSPCFrio, Kinney, Maverick, Uvalde, Zavala2 hr
May 15, 5:49 PM CDTMesoscale DiscussionSPCBaylor, Coke, Cottle, Fisher, Foard, Hardeman and 17 more116 min
May 15, 6:25 PM CDTTornado WatchSPCArcher, Baylor, Borden, Briscoe, Brown, Callahan and 45 more6 hr
May 15, 6:47 PM CDTMesoscale DiscussionSPCChildress, Collingsworth, Donley, Gray, Hall, Hansford and 6 more58 min
May 15, 6:50 PM CDTTornado WatchSPCArmstrong, Carson, Collingsworth, Dallam, Donley, Gray and 12 more5 hr

Nearby

Tornado Watches in Texas, 2003Every tornado watch in 2003

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.