Alert archive / Texas / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 152, NWS Austin/San Antonio, TX

May 1, 1998Blanco County, Texas

NWS Austin/San Antonio, TX issued this severe thunderstorm warning at May 1, 1998, 3:01 PM CDT for Blanco County, Texas. It was in force for 49 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
May 1, 1998, 3:01 PM CDT (20:01 UTC)
Expired
May 1, 1998, 3:50 PM CDT
In force
49 min
Issued by
NWS Austin/San Antonio, TX
Area
Whole counties

County Blanco County, TX

The nearest sounding before it

Del Rio, TX (KDRT), launched 12:00Z, 8.0 hours before the alert went out and 256 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 1998-05-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 1998-05-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 165 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
2242 m above ground
0-6 km bulk shear
45 kt
0-1 km storm-relative helicity
165 m²/s²
0-3 km storm-relative helicity
169 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

412 
WUUS1 KSAT 012002 RRA
SVRSAT
TXC031-012050-

SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
301 PM CDT FRI MAY 1 1998

THE NATIONAL WEATHER SERVICE IN AUSTIN/SAN ANTONIO HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  BLANCO COUNTY IN SOUTH CENTRAL TEXAS

* UNTIL 350 PM CDT

* AT 300 PM CDT... A SEVERE THUNDERSTORM 8 MILES NORTHWEST OF
  JOHNSON CITY OR IN THE VICINITY OF SANDY... WAS INDICATED BY
  NATIONAL WEATHER SERVICE RADAR... MOVING EAST 15 MPH.

* SOME CITIES AND LOCATIONS IN THE PATH OF THIS STORM ARE...
  SANDY AT 305 PM CDT
  ROUND MOUNTAIN AT 320 PM CDT

SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55 MPH...
DESTRUCTIVE HAIL... DEADLY LIGHTNING... AND VERY HEAVY RAIN. FOR
YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF
YOUR HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT
DRIVE INTO AREAS WHERE WATER COVERS THE ROAD.

The office that day

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

IssuedProductOfficeCountiesLasted
May 1, 3:44 PM CDTSevere Thunderstorm WarningEWXBurnet61 min
May 1, 4:18 PM CDTSevere Thunderstorm WarningEWXWilliamson62 min
May 1, 4:33 PM CDTSevere Thunderstorm WarningEWXHays, Travis62 min

Nearby

Severe Thunderstorm Warnings in Texas, 1998Every severe thunderstorm warning 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.