Alert archive / Texas / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 43, NWS Austin/San Antonio, TX

May 21, 1990Kerr County, Texas

NWS Austin/San Antonio, TX issued this severe thunderstorm warning at May 21, 1990, 2:06 PM CDT for Kerr County, Texas. It was in force for 69 min. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued
May 21, 1990, 2:06 PM CDT (19:06 UTC)
Expired
May 21, 1990, 3:15 PM CDT
In force
69 min
Issued by
NWS Austin/San Antonio, TX
Area
Whole counties

County Kerr County, TX

The radar

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

What was reported inside it

TimeReportWhereRemark
May 21, 2:43 PM CDTHail 1.75Kerr, TX

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.

The nearest sounding before it

Del Rio, TX (KDRT), launched 12:00Z, 7.1 hours before the alert went out and 163 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 12:00Z on 1990-05-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 631 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 12:00Z on 1990-05-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 43 square meters per square second.1939Sfc1 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
631 J/kg
Mixed-layer CIN
-410 J/kg
Mixed-layer LCL
1611 m above ground
0-6 km bulk shear
18 kt
0-1 km storm-relative helicity
43 m²/s²
0-3 km storm-relative helicity
29 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KSAT 211909
SVRSAT
TXC265-212015-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SAN ANTONIO TX
206 PM CDT MON MAY 21 1990
 
THE NATIONAL WEATHER SERVICE IN SAN ANTONIO HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 315 PM CDT
FOR PEOPLE IN THE FOLLOWING COUNTY...
 
IN SOUTH TEXAS
          ...KERR
 
AT 205 PM CDT...NATIONAL WEATHER SERVICE RADAR INDICATED A SEVERE
THUNDERSTORM IN KERR COUNTY NEAR HUNT.  THE THUNDERSTORM IS
DEVELOPING AND HAS SHOWN LITTLE MOVEMENT.  HAIL IS INDICATED WITH
THIS STORM...SO RESIDENTS AROUND HUNT AND KERRVILLE...AS WELL AS
OTHER COMMUNITIES IN KERR COUNTY...SHOULD BE ALERT FOR THREATENING
WEATHER.
 
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
May 20, 8:02 PM CDTSevere Thunderstorm WarningEWXMcMullen58 min
May 20, 8:35 PM CDTSevere Thunderstorm WarningEWXAtascosa55 min
May 20, 9:21 PM CDTSevere Thunderstorm WarningEWXAtascosa54 min
May 20, 10:20 PM CDTSevere Thunderstorm WarningEWXBexar50 min
May 20, 10:29 PM CDTSevere Thunderstorm WarningEWXWilson76 min
May 20, 10:59 PM CDTSevere Thunderstorm WarningEWXGonzales61 min
May 21, 2:37 PM CDTTornado WarningEWXKerr68 min
May 21, 5:23 PM CDTSevere Thunderstorm WarningEWXTravis67 min
May 21, 6:07 PM CDTSevere Thunderstorm WarningEWXUvalde68 min
May 21, 6:15 PM CDTSevere Thunderstorm WarningEWXWilliamson45 min
May 21, 6:30 PM CDTSevere Thunderstorm WarningEWXTravis30 min
May 21, 6:44 PM CDTSevere Thunderstorm WarningEWXVal Verde61 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.