Alert archive / Texas / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 206, NWS Austin/San Antonio, TX

August 30, 1998Travis County, Texas

NWS Austin/San Antonio, TX issued this severe thunderstorm warning at Aug 30, 1998, 6:09 PM CDT for Travis County, Texas. It was in force for 61 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
Aug 30, 1998, 6:09 PM CDT (23:09 UTC)
Expired
Aug 30, 1998, 7:10 PM CDT
In force
61 min
Issued by
NWS Austin/San Antonio, TX
Area
Whole counties

County Travis County, TX

The radar

The Ft Hood radar (KGRK), 58 km from the middle of the area, began a volume at 23:10 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Fort Worth, TX (KFWD), launched 12:00Z, 11.2 hours before the alert went out and 281 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, Fort Worth, TX at 12:00Z on 1998-08-30Temperature 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, Fort Worth, TX at 12:00Z on 1998-08-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 3 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
2126 m above ground
0-6 km bulk shear
20 kt
0-1 km storm-relative helicity
3 m²/s²
0-3 km storm-relative helicity
31 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.

140 
WUUS1 KSAT 302310 RRA
SVRSAT
TXC453-310010-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
609 PM CDT SUN AUG 30 1998

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

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

* UNTIL 710 PM CDT


* AT 600 PM... A SEVERE THUNDERSTORM WAS INDICATED 5 MILES EAST OF
  AUSTIN... BY NATIONAL WEATHER SERVICE RADAR... MOVING WEST AT 15
  MPH.

* SOME CITIES AND LOCATIONS IN THE PATH OF THIS STORM ARE...
  AUSTIN AT 612 PM
  WEST LAKE HILLS AT 615 PM

SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 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.

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, Aug 30, 5:30 PM CDT, 39 minutes before
TXZ171>173-183>194-202>209-217>225-228-311100-

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
530 PM CDT SUN AUG 30 1998

THERE IS A CHANCE OF SEVERE THUNDERSTORMS ACROSS CENTRAL AND SOUTHERN
PORTIONS OF THE HILL COUNTRY AND SOUTH CENTRAL TEXAS THIS EVENING.

INSTABILITY ALOFT AND A COUPLE OF SURFACE LOW PRESSURE CENTERS FOCUSING
MOIST..UNSTABLE GULF AIR INTO THEM WILL HELP PRODUCE SCATTERED TO
NUMEROUS THUNDERSTORMS ACROSS THE PORTIONS OF THE HILL COUNTRY AND
SOUTH CENTRAL TEXAS THIS EVENING.  THE ACTIVITY WILL WEAKEN TO BELOW
SEVERE LEVELS AFTER DARK.  THE MAIN THREATS WILL BE FROM HAIL AND HIGH
WINDS..POSSIBLY IN EXCESS OF 50 MILES AN HOUR.

A SLIGHT CHANCE OF SEVERE THUNDERSTORMS WILL CONTINUE MONDAY THROUGHOUT
SOUTH CENTRAL TEXAS AND THE HILL COUNTRY WITH A SIMILAR SCENARIO
EXPECTED.

THE HAZARDOUS WEATHER OUTLOOK NORMALLY WILL BE UPDATED BY MEANS OF
THE ZONE FORECAST...SHORT TERM FORECAST...WATCHES...WARNINGS AND
ADVISORIES.  THE HAZARDOUS WEATHER OUTLOOK ITSELF WILL BE UPDATED
ONLY IF UNEXPECTED HAZARDOUS WEATHER DEVELOPS OR IF EXPECTED
HAZARDOUS WEATHER NO LONGER IS FORECAST TO DEVELOP.

ADDITIONAL WEATHER INFORMATION IS AVAILABLE ON THE NATIONAL WEATHER
SERVICE CENTRAL AND SOUTH CENTRAL TEXAS HOME PAGE OF THE INTERNET
WORLD WIDE WEB AT WWW.SRH.NOAA.GOV/EWX OR TUNE TO THE VOICE OF THE
NATIONAL WEATHER SERVICE...NOAA WEATHER RADIO...OPERATING ON A
FREQUENCY BETWEEN 162.400 MHZ AND 162.550 MHZ.

NEARBY HAZARDOUS WEATHER OUTLOOKS INCLUDE:
SOUTHWEST TEXAS    FROM MIDLAND            LBBSPSMAF...WWUS35 KMAF
CONCHO VALLEY      FROM SAN ANGELO         LBBSPSSJT...WWUS35 KSJT
NORTH TEXAS        FROM FORT WORTH         FTWSPSFTW...WWUS35 KFTW
SOUTHEAST TEXAS    FROM HOUSTON/GALVESTON  SATSPSHOU...WWUS35 KHOU
COASTAL BEND/      FROM CORPUS CHRISTI     SATSPSCRP...WWUS35 KCRP
RIO GRANDE PLAINS
Special weather statement, Aug 30, 5:30 PM CDT, 39 minutes before
TXZ171>173-183>194-202>209-217>225-228-311100-

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
530 PM CDT SUN AUG 30 1998

THERE IS A CHANCE OF SEVERE THUNDERSTORMS ACROSS CENTRAL AND SOUTHERN
PORTIONS OF THE HILL COUNTRY AND SOUTH CENTRAL TEXAS THIS EVENING.

INSTABILITY ALOFT AND A COUPLE OF SURFACE LOW PRESSURE CENTERS FOCUSING
MOIST..UNSTABLE GULF AIR INTO THEM WILL HELP PRODUCE SCATTERED TO
NUMEROUS THUNDERSTORMS ACROSS THE PORTIONS OF THE HILL COUNTRY AND
SOUTH CENTRAL TEXAS THIS EVENING.  THE ACTIVITY WILL WEAKEN TO BELOW
SEVERE LEVELS AFTER DARK.  THE MAIN THREATS WILL BE FROM HAIL AND HIGH
WINDS..POSSIBLY IN EXCESS OF 50 MILES AN HOUR.

A SLIGHT CHANCE OF SEVERE THUNDERSTORMS WILL CONTINUE MONDAY THROUGHOUT
SOUTH CENTRAL TEXAS AND THE HILL COUNTRY WITH A SIMILAR SCENARIO
EXPECTED.

THE HAZARDOUS WEATHER OUTLOOK NORMALLY WILL BE UPDATED BY MEANS OF
THE ZONE FORECAST...SHORT TERM FORECAST...WATCHES...WARNINGS AND
ADVISORIES.  THE HAZARDOUS WEATHER OUTLOOK ITSELF WILL BE UPDATED
ONLY IF UNEXPECTED HAZARDOUS WEATHER DEVELOPS OR IF EXPECTED
HAZARDOUS WEATHER NO LONGER IS FORECAST TO DEVELOP.

ADDITIONAL WEATHER INFORMATION IS AVAILABLE ON THE NATIONAL WEATHER
SERVICE CENTRAL AND SOUTH CENTRAL TEXAS HOME PAGE OF THE INTERNET
WORLD WIDE WEB AT WWW.SRH.NOAA.GOV/EWX OR TUNE TO THE VOICE OF THE
NATIONAL WEATHER SERVICE...NOAA WEATHER RADIO...OPERATING ON A
FREQUENCY BETWEEN 162.400 MHZ AND 162.550 MHZ.

NEARBY HAZARDOUS WEATHER OUTLOOKS INCLUDE:
SOUTHWEST TEXAS    FROM MIDLAND            LBBSPSMAF...WWUS35 KMAF
CONCHO VALLEY      FROM SAN ANGELO         LBBSPSSJT...WWUS35 KSJT
NORTH TEXAS        FROM FORT WORTH         FTWSPSFTW...WWUS35 KFTW
SOUTHEAST TEXAS    FROM HOUSTON/GALVESTON  SATSPSHOU...WWUS35 KHOU
COASTAL BEND/      FROM CORPUS CHRISTI     SATSPSCRP...WWUS35 KCRP
RIO GRANDE PLAINS

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 29, 7:57 PM CDTFlash Flood WarningEWXVal Verde2 hr
Aug 29, 8:41 PM CDTFlash Flood WarningEWXEdwards3 hr
Aug 30, 6:04 PM CDTSevere Thunderstorm WarningEWXDimmit61 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; radar from the NEXRAD Level II archive.