Alert archive / Texas / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 216, NWS Austin/San Antonio, TX

November 1, 1998Travis County, Texas

NWS Austin/San Antonio, TX issued this severe thunderstorm warning at Nov 1, 1998, 5:28 AM CST for Travis County, Texas. It was in force for 47 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
Nov 1, 1998, 5:28 AM CST (11:28 UTC)
Expired
Nov 1, 1998, 6:15 AM CST
In force
47 min
Issued by
NWS Austin/San Antonio, TX
Area
Whole counties

County Travis County, TX

The nearest sounding before it

Fort Worth, TX (KFWD), launched 00:00Z, 11.5 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 00:00Z on 1998-11-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 689 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, Fort Worth, TX at 00:00Z on 1998-11-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 156 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
689 J/kg
Mixed-layer CIN
-19 J/kg
Mixed-layer LCL
825 m above ground
0-6 km bulk shear
38 kt
0-1 km storm-relative helicity
156 m²/s²
0-3 km storm-relative helicity
236 m²/s²
Significant tornado parameter
0.5
Supercell composite
7.0

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KSAT 011129
SVRSAT
TXC453-011215-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
528 AM CST SUN NOV 1 1998

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

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

* UNTIL 615 AM CST

* AT 525 AM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  A LINE OF SEVERE THUNDERSTORMS ALONG THE I35 CORRIDOR IN
  AUSTIN...MOVING EAST AT 30 MPH.

*
DAMAGING WINDS AND HEAVY RAIN ARE LIKELY. GO INSIDE A STURDY
BUILDING AND STAY AWAY FROM WINDOWS!

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.

NWS Austin/San Antonio, TX wrote its last area forecast discussion before this severe thunderstorm warning went out at Oct 31, 8:10 PM CST, 9 hours 18 minutes earlier.

Area forecast discussion, Oct 31, 8:10 PM CST, 9 hours 18 minutes before
DEEP SOUTH TEXAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BROWNSVILLE TX
810 PM CST SAT OCT 31 1998

FEW SHOWERS OF EARLIER TODAY HAVE MOSTLY DISSIPATED ALONG WITH MUCH
OF THE LOWEST LEVEL STRATOCUMULOUS CLOUDS...ALTHO A BROKEN DECK
STILL REMAINS OVER MUCH OF THE AREA. ALL IN ALL THO  A RATHER
TRANQUIL EVENING ACROSS THE CWA AS ALL OF THE SIGNIFICANT WEATHER
AND ASSOCIATED NASTIES REMAIN WELL NORTHWEST OF HERE. STILL A LOT OF
UNCERTAINTY FOR US HERE AS FAR AS WHAT WILL ACTUALLY HAPPEN WITH THE
WEATHER ASSOCIATED WITH THE FRONT...AND WHEN THE FRONT WILL ACTUALLY
PASS. EVENING SOUNDING SHOWING THINGS MOISTENING UP...BELEIVE WE
WILL HAVE NO PROBLEM GENERATING SOME SHOWERS OR STORMS
TOMORROW...EVEN WITH PROGGED WEAK DYNAMICS BY THE MODELS. THAT
SAID...CURRENT FORECAST STILL LOOKS GOOD WITH THE LOW CHANCE POPS
TONIGHT...THEN HIGHER TOMORROW. IF THINGS SPEED UP CONSIDERABLY
...COULD POSSIBLY SEE SOME ACTIVITY MAKING IT TO OUR WESTERN FRINGE
TOWARD MORNING...BUT THINK AT THE MOMENT THE 20 POP WILL DO. SO WILL
NOT ADVOCATE ANY CHANGES AT THE PRESENT TIME.

VALONE...61

In the hours before

Special weather statement, Nov 1, 12:01 AM CST, 5 hours 27 minutes before
TXZ171>173-183>194-202>209-217>225-228-011200-

HAZARDOUS WEATHER OUTLOOK...UPDATE
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
1201 AM CST SUN NOV 1 1998

THERE CONTINUES TO BE A RISK OF SEVERE THUNDERSTORMS TONIGHT AND
INTO SUNDAY AS A PACIFIC COLD FRONT MOVES THROUGH THE TEXAS HILL
COUNTRY AND SOUTH CENTRAL TEXAS. SEVERE THUNDERSTORMS MAY PRODUCE
DAMAGING WINDS AND LARGE HAIL...ALONG WITH LOCALLY HEAVY RAIN.

AVERAGE RAINFALL RATES WILL BE AROUND ONE-HALF INCH AN HOUR WITH
ISOLATED AMOUNTS OF ONE TO TWO INCHES OR MORE POSSIBLE IN THE
HEAVIER THUNDERSTORMS.

SHOWERS AND THUNDERSTORMS ASSOCIATED WITH AN UPPER AIR DISTURBANCE
AND ITS ASSOCIATED COLD FRONT...CONTINUES TO DEVELOP OVER WEST
TEXAS. THIS AREA OF WEATHER IS FORECASTED TO MOVE INTO THE WESTERN
PORTIONS OF THE TEXAS HILL COUNTRY AND SOUTH CENTRAL TEXAS TONIGHT
AND CONTINUE MOVING SLOWLY ACROSS THE REGION INTO SUNDAY MORNING...
POSSIBLY SPILLING OVER INTO PART OF SUNDAY AFTERNOON.

SOME STORMS MAY BE SEVERE...AND LOCALLY HEAVY RAIN IS POSSIBLE.
AS ALWAYS...CAUTION IS ADVISED AT LOW WATER CROSSINGS OR WHERE ROADS
PASS THROUGH LOW LYING AREAS...WHERE LOCALLY HEAVY RAIN CAN CAUSE
FLOODING.

THE HAZARDOUS WEATHER OUTLOOK NORMALLY WILL BE UPDATED BY MEANS OF
THE ZONE FORECASTS...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.  TIMELY DELIVERY OF DATA AND
PRODUCTS FROM THIS SERVER THROUGH THE INTERNET IS NOT GUARANTEED...
UNLIKE DATA AND PRODUCTS DELIVERED FROM THE OFFICIAL NATIONAL WEATHER
SERVICE SOURCES.

THE OFFICIAL SOURCE OF NATIONAL WEATHER SERVICE DATA AND PRODUCTS IS
THE NOAA WEATHER RADIO...NOAA WEATHER WIRE...FAMILY OF SERVICES, AND
EMWIN.

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, Nov 1, 5:11 AM CST, 17 minutes before
TXZ171>173-183>194-202>209-217>225-228-011345-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
511 AM CST SUN NOV 1 1998

...COLD FRONT...SHOWERS AND THUNDERSTORMS MOVING THROUGH SOUTH
CENTRAL TEXAS...

A COLD FRONT CONTINUES TO MOVE THROUGH SOUTH CENTRAL TEXAS THIS
MORNING...AS SHOWERS AND THUNDERSTORMS REMAIN ALONG AND AHEAD
OF THE FRONT.  THE COLD FRONT WILL MOVE THROUGH AUSTIN AND SAN
ANTONIO WITHIN THE NEXT HOUR.

EXPECT BRIEF HEAVY RAINFALL...STRONG GUSTY WINDS...AND A 10 T0 15
DEGREE TEMPERATURE DROP.

THE CHANCE OF SHOWERS AND THUNDERSTORMS WILL CONTINUE THROUGH THE
MORNING HOURS.  THE PRECIPITATION WILL MOVE SOUTH OF THE AREA...AND
BY THIS AFTERNOON SKIES WILL BECOME SUNNY.

TEMPERATURES WILL REMAIN NEAR NORMAL TODAY AND TONIGHT.

THE BRIEF HEAVY RAINFALL WILL CAUSE LOW WATER CROSSINGS TO FLOOD
AND MOTORISTS ARE URGED NOT TO CROSS FLOODED ROADWAYS.

ADDITIONAL STATEMENTS WILL BE ISSUED AS CONDITIONS WARRANT.

The office that day

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

IssuedProductOfficeCountiesLasted
Nov 1, 6:40 AM CSTSevere Thunderstorm WarningEWXLee30 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.