Alert archive / Texas / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 16, NWS Austin/San Antonio, TX

March 30, 1997Medina County, Texas

NWS Austin/San Antonio, TX issued this severe thunderstorm warning at Mar 30, 1997, 5:51 AM CST for Medina County, Texas. It was in force for 54 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
Mar 30, 1997, 5:51 AM CST (11:51 UTC)
Expired
Mar 30, 1997, 6:45 AM CST
In force
54 min
Issued by
NWS Austin/San Antonio, TX
Area
Whole counties

County Medina County, TX

What was reported inside it

TimeReportWhereRemark
Mar 30, 6:10 AM CSTThunderstorm WindDevine, 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.

The nearest sounding before it

Del Rio, TX (KDRT), launched 00:00Z, 11.9 hours before the alert went out and 168 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 1997-03-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 907 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 1997-03-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 119 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
907 J/kg
Mixed-layer CIN
-130 J/kg
Mixed-layer LCL
2171 m above ground
0-6 km bulk shear
28 kt
0-1 km storm-relative helicity
119 m²/s²
0-3 km storm-relative helicity
166 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.2

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KSAT 301151 RRA
SVRSAT
TXC325-301245-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
551 AM CST SUN MAR 30 1997
 
THE NATIONAL WEATHER SERVICE IN AUSTIN/SAN ANTONIO HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  645 AM CST
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN SOUTH CENTRAL TEXAS
 
   ...MEDINA COUNTY
 
AT 550 RADAR INDICATED A SEVERE THUNDERSTORM APPROACHING THE TOWN OF
DEVINE FROM THE NORTHWEST. THE STORM WAS MOVING SOUTHEAST AT 25 MPH.
 
 
SEVERE THUNDERSTORM WINDS CAN REACH SPEEDS OVER 60 MPH.  THESE WINDS
BLOW DOWN TREES...POWER LINES...AND SEVERELY DAMAGE MOBILE HOMES...
SOMETIMES BUILDINGS.  VERY LARGE HAIL CAN INPJURE ANYONE CAUGHT
OUTSIDE.

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

In the hours before

Special weather statement, Mar 30, 1:43 AM CST, 4 hours 8 minutes before
TXZ171>173-183>194-202>209-217>225-228-301145-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
145 AM CST SUN MAR 30 1997

...SEVERE THUNDERSTORM WATCH CANCELLED FOR SOUTH CENTRAL TEXAS...

THE SEVERE THUNDERSTORM WATCH ISSUED EARLIER FOR SOUTH CENTRAL TEXAS
HAS BEEN CANCELLED FOR ALL OF SOUTH CENTRAL TEXAS.  THE WATCH IS NO
LONGER IN EFFECT FOR:

BANDERA...BASTROP...BLANCO...BRAZOS...BURNET...COMAL...EDWARDS...
GILLESPIE...HAYS...KENDALL...KERR...LEE...LLANO...MEDINA...REAL...
TRAVIS...UVALDE AND WILLIAMSON COUNTIES.

A COLD FRONT CONTINUES TO MOVE SOUTHWARD TOWARD SOUTH CENTRAL TEXAS
THIS MORNING.  THE SEVERE THUNDERSTORM THREAT HAS ENDED AT THIS TIME.
HOWEVER...SHOWERS AND THUNDERSTORMS ARE STILL EXPECTED AHEAD...ALONG
AND BEHIND THE FRONT THROUGH THE MORNING AND INTO TODAY.

STAY TUNED TO NOAA WEATHER RADIO FOR FURTHER UPDATES.
Special weather statement, Mar 30, 1:45 AM CST, 4 hours 6 minutes before
TXZ171>173-183>194-202>209-217>225-228-301145-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
145 AM CST SUN MAR 30 1997

...SEVERE THUNDERSTORM WATCH CANCELLED FOR SOUTH CENTRAL TEXAS...

THE SEVERE THUNDERSTORM WATCH ISSUED EARLIER FOR SOUTH CENTRAL TEXAS
HAS BEEN CANCELLED FOR ALL OF SOUTH CENTRAL TEXAS.  THE WATCH IS NO
LONGER IN EFFECT FOR:

BANDERA...BASTROP...BLANCO...BRAZOS...BURNET...COMAL...EDWARDS...
GILLESPIE...HAYS...KENDALL...KERR...LEE...LLANO...MEDINA...REAL...
TRAVIS...UVALDE AND WILLIAMSON COUNTIES.

A COLD FRONT CONTINUES TO MOVE SOUTHWARD TOWARD SOUTH CENTRAL TEXAS
THIS MORNING.  THE SEVERE THUNDERSTORM THREAT HAS ENDED AT THIS TIME.
HOWEVER...SHOWERS AND THUNDERSTORMS ARE STILL EXPECTED AHEAD...ALONG
AND BEHIND THE FRONT THROUGH THE MORNING AND INTO TODAY.

STAY TUNED TO NOAA WEATHER RADIO FOR FURTHER UPDATES.

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 29, 9:09 PM CSTSevere Thunderstorm WarningEWXEdwards66 min
Mar 29, 9:41 PM CSTSevere Thunderstorm WarningEWXBurnet64 min
Mar 30, 5:57 AM CSTSevere Thunderstorm WarningEWXFrio63 min
Mar 30, 7:01 AM CSTSevere Thunderstorm WarningEWXFrio59 min

Nearby

Severe Thunderstorm Warnings in Texas, 1997Every severe thunderstorm warning in 1997

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.