Alert archive / Texas / Tornado Warnings in 2001

Tornado Warning 15, NWS Austin/San Antonio, TX

May 5, 2001Dimmit County, Texas

NWS Austin/San Antonio, TX issued this tornado warning at May 5, 2001, 11:53 PM CDT for Dimmit County, Texas. It was in force for 52 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
May 5, 2001, 11:53 PM CDT (04:53 UTC)
Expired
May 6, 2001, 12:45 AM CDT
In force
52 min
Issued by
NWS Austin/San Antonio, TX
Area
Whole counties

County Dimmit County, TX

The radar

The Laughlin AFB radar (KDFX), 107 km from the middle of the area, began a volume at 04:55 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

Del Rio, TX (KDRT), launched 00:00Z, 4.9 hours before the alert went out and 149 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, Del Rio, TX at 00:00Z on 2001-05-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2880 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, Del Rio, TX at 00:00Z on 2001-05-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 106 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
2880 J/kg
Mixed-layer CIN
-3 J/kg
Mixed-layer LCL
898 m above ground
0-6 km bulk shear
49 kt
0-1 km storm-relative helicity
106 m²/s²
0-3 km storm-relative helicity
186 m²/s²
Significant tornado parameter
2.7
Supercell composite
11.2

Open this sounding in Storm Lab

The text

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

526 
WFUS54 KEWX 060454
TORSAT
TXC127-060545-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
1153 PM CDT SAT MAY 5 2001

THE NATIONAL WEATHER SERVICE HAS ISSUED A

* TORNADO WARNING FOR THE FOLLOWING COUNTIES IN TEXAS...
  DIMMIT

* UNTIL 1245 AM CDT

* AT 1153 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  THUNDERSTORM WITH STRONG ROTATION THAT MAY PRODUCE A TORNADO AT ANY
  TIME...LOCATED 17 MILES SOUTHWEST OF CARRIZO SPRINGS...MOVING 
  EAST AT 25 MPH.

* THE TORNADO PRODUCING STORM IS EXPECTED TO BE...
  6 MILES SOUTHWEST OF CATARINA AT 1245 AM

The office that day

Everything else NWS Austin/San Antonio, TX issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 5, 8:20 PM CDTTornado WarningEWXMaverick60 min
May 5, 9:18 PM CDTTornado WarningEWXDimmit, Maverick57 min
May 5, 10:12 PM CDTTornado WarningEWXDimmit48 min
May 5, 11:10 PM CDTSevere Thunderstorm WarningEWXMaverick50 min
May 6, 5:05 PM CDTSevere Thunderstorm WarningEWXLlano30 min
May 6, 5:39 PM CDTSevere Thunderstorm WarningEWXLlano51 min
May 6, 5:48 PM CDTSevere Thunderstorm WarningEWXAtascosa, Frio57 min
May 6, 6:00 PM CDTTornado WarningEWXLlano45 min
May 6, 6:40 PM CDTSevere Thunderstorm WarningEWXBurnet65 min

Nearby

Tornado Warnings in Texas, 2001Every tornado warning in 2001Tornadoes 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.