Alert archive / Texas / Severe Thunderstorm Warnings in 1995

Severe Thunderstorm Warning 64, NWS Austin/San Antonio, TX

April 17, 1995Llano County, Texas

NWS Austin/San Antonio, TX issued this severe thunderstorm warning at Apr 17, 1995, 10:23 PM CDT for Llano County, Texas. It was in force for 67 min.

The area

The counties it named.

The facts

Issued
Apr 17, 1995, 10:23 PM CDT (03:23 UTC)
Expired
Apr 17, 1995, 11:30 PM CDT
In force
67 min
Issued by
NWS Austin/San Antonio, TX
Area
Whole counties

County Llano County, TX

The nearest sounding before it

Del Rio, TX (KDRT), launched 00:00Z, 3.4 hours before the alert went out and 255 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 1995-04-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 330 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 1995-04-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 202 square meters per square second.1939587897117Sfc1 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
330 J/kg
Mixed-layer CIN
-76 J/kg
Mixed-layer LCL
3626 m above ground
0-6 km bulk shear
82 kt
0-1 km storm-relative helicity
202 m²/s²
0-3 km storm-relative helicity
205 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.1

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KSAT 180323
SVRSAT
TXC299-180430-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SAN ANTONIO TX
1023 PM CDT MON APR 17 1995
 
THE NATIONAL WEATHER SERVICE IN SAN ANTONIO HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 1130 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN SOUTH CENTRAL TEXAS
 
   ...LLANO COUNTY
 
AT 1020 PM CDT...RADAR INDICATED A SEVERE THUNDERSTORM ENTERING WESTERN
LLANO COUNTY NEAR CASTELL. MOVEMENT WAS NORTHEAST AT 30 MPH. THIS
THUNDERSTORM HAS PRODUCED NICKEL SIZED HAIL AND WAS PART OF A LINE OF
THUNDERSTORMS MOVING EASTWARD THROUGH THE HILL COUNTRY.
 
ALTHOUGH NO TORNADOES HAVE BEEN DETECTED WITH THIS STORM...A
TORNADO WATCH REMAINS IN EFFECT.  SEVERE THUNDERSTORMS CAN AND
OCCASIONALLY DO PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING
SO BE ON THE LOOKOUT.
 
 
 
&

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 17, 9:17 PM CDTSevere Thunderstorm WarningEWXWebb58 min
Apr 17, 11:08 PM CDTSevere Thunderstorm WarningEWXUvalde37 min
Apr 17, 11:45 PM CDTSevere Thunderstorm WarningEWXMedina45 min
Apr 17, 11:51 PM CDTSevere Thunderstorm WarningEWXComal, Hays, Travis69 min

Nearby

Severe Thunderstorm Warnings in Texas, 1995Every severe thunderstorm warning in 1995

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.