Alert archive / Texas / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 13, NWS Austin/San Antonio, TX

March 30, 1990Zavala County, Texas

NWS Austin/San Antonio, TX issued this severe thunderstorm warning at Mar 30, 1990, 2:55 AM CST for Zavala County, Texas. It was in force for 65 min.

The area

The counties it named.

The facts

Issued
Mar 30, 1990, 2:55 AM CST (08:55 UTC)
Expired
Mar 30, 1990, 4:00 AM CST
In force
65 min
Issued by
NWS Austin/San Antonio, TX
Area
Whole counties

County Zavala 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, 8.9 hours before the alert went out and 119 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 1990-03-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 663 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 1990-03-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -4 square meters per square second.193958Sfc1 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
663 J/kg
Mixed-layer CIN
-45 J/kg
Mixed-layer LCL
1799 m above ground
0-6 km bulk shear
50 kt
0-1 km storm-relative helicity
-4 m²/s²
0-3 km storm-relative helicity
44 m²/s²
Significant tornado parameter
-0.0
Supercell composite
-0.3

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KSAT 300859
SVRSAT
TXC507-301000-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SAN ANTONIO TX
255 AM CST FRI MAR 30 1990
 
THE NATIONAL WEATHER SERVICE IN SAN ANTONIO HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 4 AM CST FOR
PEOPLE IN THE FOLLOWING COUNTY...
 
IN SOUTH TEXAS
          ...ZAVALA
 
AT 250 AM CST...HONDO RADAR INDICATED A SEVERE THUNDERSTORM NEAR
LAPRYOR IN ZAVALA COUNTY.  MOVEMENT IS TOWARD THE EAST-SOUTHEAST AT 20
MPH.
 
A SEVERE THUNDERSTORM WATCH IS ALSO IN EFFECT FOR MUCH OF SOUTH
CENTRAL TEXAS UNTIL 7 AM CST.
 
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55 MPH...HAIL
3/4 INCH OR MORE IN DIAMETER...FREQUENT LIGHTNING AND VERY HEAVY
RAIN.
 
WHEN A THUNDERSTORM THREATENS...SEEK SHELTER INSIDE A HOME OR
BUILDING AWAY FROM DOORS AND WINDOWS.  REFRAIN FROM USING ELECTRICAL
APPLIANCES.
 
YOU SHOULD ASK THE NEAREST LAW ENFORCEMENT AGENCY TO RELAY YOUR
SEVERE WEATHER REPORTS TO THE LOCAL NATIONAL WEATHER SERVICE OFFICE.
 
PLEASE LISTEN TO YOUR LOCAL RADIO...TV OR NOAA WEATHER RADIO STATION
FOR LATER STATEMENTS OR WARNINGS REGARDING THIS SEVERE WEATHER EVENT.

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 29, 10:55 PM CSTSevere Thunderstorm WarningEWXVal Verde60 min
Mar 29, 11:44 PM CSTSevere Thunderstorm WarningEWXKinney61 min
Mar 30, 12:46 AM CSTSevere Thunderstorm WarningEWXKinney, Uvalde59 min
Mar 30, 1:47 AM CSTSevere Thunderstorm WarningEWXUvalde, Zavala58 min

Nearby

Severe Thunderstorm Warnings in Texas, 1990Every severe thunderstorm warning 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.