Alert archive / Texas / Tornado Warnings in 1998

Tornado Warning 18, NWS Austin/San Antonio, TX

March 7, 1998Guadalupe County, Texas

NWS Austin/San Antonio, TX issued this tornado warning at Mar 7, 1998, 7:04 PM CST for Guadalupe County, Texas. It was in force for 26 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Mar 7, 1998, 7:04 PM CST (01:04 UTC)
Expired
Mar 7, 1998, 7:30 PM CST
In force
26 min
Issued by
NWS Austin/San Antonio, TX
Area
Whole counties

County Guadalupe County, TX

The nearest sounding before it

Corpus Christi, TX (KCRP), launched 00:00Z, 1.1 hours before the alert went out and 214 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, Corpus Christi, TX at 00:00Z on 1998-03-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 539 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, Corpus Christi, TX at 00:00Z on 1998-03-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 104 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
539 J/kg
Mixed-layer CIN
-169 J/kg
Mixed-layer LCL
1710 m above ground
0-6 km bulk shear
51 kt
0-1 km storm-relative helicity
104 m²/s²
0-3 km storm-relative helicity
204 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.3

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KSAT 080104 RRA
TORSAT
TXC187-080130-
 
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
704 PM CST SAT MAR 7 1998
 
THE NATIONAL WEATHER SERVICE IN AUSTIN/SAN ANTONIO HAS ISSUED A
TORNADO WARNING EFFECTIVE UNTIL  730 PM CST
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN SOUTH CENTRAL TEXAS
 
   ...GUADALUPE COUNTY
 
RADAR INDICATED A TORNADO NEAR KINGSBURY ABOUT TO CROSS INTERSTATE 10.
 
IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER IN A NEARBY REINFORCED
BUILDING.  AS A LAST RESORT...SEEK SHELTER IN A DITCH OR LOW
SPOT AND COVER YOUR HEAD.

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 7, 6:18 PM CSTSevere Thunderstorm WarningEWXComal42 min
Mar 7, 6:45 PM CSTSevere Thunderstorm WarningEWXGuadalupe60 min
Mar 7, 6:59 PM CSTSevere Thunderstorm WarningEWXCaldwell31 min
Mar 7, 7:15 PM CSTTornado WarningEWXGonzales45 min
Mar 7, 8:49 PM CSTSevere Thunderstorm WarningEWXFrio, Medina56 min
Mar 7, 9:08 PM CSTSevere Thunderstorm WarningEWXWilliamson67 min
Mar 7, 9:23 PM CSTSevere Thunderstorm WarningEWXAtascosa, Bexar37 min
Mar 7, 9:48 PM CSTSevere Thunderstorm WarningEWXWilson57 min
Mar 7, 9:56 PM CSTSevere Thunderstorm WarningEWXAtascosa34 min
Mar 7, 10:17 PM CSTSevere Thunderstorm WarningEWXDeWitt, Gonzales, Karnes, Lavaca58 min

Nearby

Tornado Warnings in Texas, 1998Every tornado warning in 1998Tornadoes in 1998

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.