Alert archive / Texas / Tornado Warnings in 1990

Tornado Warning 4, NWS Austin/San Antonio, TX

April 25, 1990Val Verde County, Texas

NWS Austin/San Antonio, TX issued this tornado warning at Apr 25, 1990, 9:45 PM CDT for Val Verde County, Texas. It was in force for 55 min.

The area

The counties it named.

The facts

Issued
Apr 25, 1990, 9:45 PM CDT (02:45 UTC)
Expired
Apr 25, 1990, 10:40 PM CDT
In force
55 min
Issued by
NWS Austin/San Antonio, TX
Area
Whole counties

County Val Verde County, TX

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

The nearest sounding before it

Del Rio, TX (KDRT), launched 00:00Z, 2.8 hours before the alert went out and 66 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 1990-04-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2382 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 1990-04-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 113 square meters per square second.19395878Sfc1 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
2382 J/kg
Mixed-layer CIN
-37 J/kg
Mixed-layer LCL
1159 m above ground
0-6 km bulk shear
50 kt
0-1 km storm-relative helicity
113 m²/s²
0-3 km storm-relative helicity
101 m²/s²
Significant tornado parameter
1.0
Supercell composite
5.2

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 25, 8:35 PM CDTSevere Thunderstorm WarningEWXVal Verde55 min
Apr 25, 8:44 PM CDTSevere Thunderstorm WarningEWXKinney61 min
Apr 25, 9:34 PM CDTSevere Thunderstorm WarningEWXKinney56 min
Apr 25, 9:41 PM CDTTornado WarningEWXKinney64 min
Apr 25, 10:42 PM CDTSevere Thunderstorm WarningEWXKinney63 min
Apr 25, 11:25 PM CDTFlash Flood WarningEWXKinney3 hr
Apr 26, 12:15 AM CDTSevere Thunderstorm WarningEWXReal60 min
Apr 26, 5:18 AM CDTSevere Thunderstorm WarningEWXBexar, Comal, Guadalupe42 min
Apr 26, 5:54 AM CDTSevere Thunderstorm WarningEWXHays66 min
Apr 26, 6:00 AM CDTSevere Thunderstorm WarningEWXComal, Guadalupe30 min
Apr 26, 6:52 AM CDTFlash Flood WarningEWXMills2 hr
Apr 26, 9:03 AM CDTFlash Flood WarningEWXMills3 hr
Apr 26, 12:05 PM CDTTornado WarningEWXVictoria25 min
Apr 26, 12:33 PM CDTTornado WarningEWXVictoria57 min

Nearby

Tornado Warnings in Texas, 1990Every tornado warning in 1990Tornadoes in 1990

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.