Alert archive / Texas / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 165, NWS Austin/San Antonio, TX

October 28, 2000Gillespie County, Texas

NWS Austin/San Antonio, TX issued this severe thunderstorm warning at Oct 28, 2000, 9:59 PM CDT for Gillespie 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 outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.

The facts

Issued
Oct 28, 2000, 9:59 PM CDT (02:59 UTC)
Expired
Oct 28, 2000, 11:00 PM CDT
In force
61 min
Issued by
NWS Austin/San Antonio, TX
Area
Whole counties; the outline is the Mesonet’s reconstruction

County Gillespie County, TX

The radar

The Austin/San Antonio radar (KEWX), 122 km from the middle of the area, began a volume at 03:00 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Oct 28, 9:00 PM CDTTornado WatchSPC5 hr

The nearest sounding before it

Del Rio, TX (KDRT), launched 00:00Z, 3.0 hours before the alert went out and 205 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 2000-10-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1364 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 2000-10-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 141 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
1364 J/kg
Mixed-layer CIN
-27 J/kg
Mixed-layer LCL
946 m above ground
0-6 km bulk shear
61 kt
0-1 km storm-relative helicity
141 m²/s²
0-3 km storm-relative helicity
274 m²/s²
Significant tornado parameter
1.9
Supercell composite
7.0

Open this sounding in Storm Lab

The text

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

000 
WUUS54 KEWX 290300
SVRSAT
TXC171-290400-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
959 PM CDT SAT OCT 28 2000

THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR THE FOLLOWING COUNTIES IN TEXAS...
  GILLESPIE COUNTY

* UNTIL 1100 PM CDT

* AT 959 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 9 MILES EAST OF HARPER...OR ABOUT 15 MILES WEST
  OF FREDERICKSBURG...MOVING EAST AT 25 MPH.

* THE SEVERE THUNDERSTORM WILL BE...
  5 MILES NORTH OF FREDERICKSBURG AT 1050 PM CDT

A TORNADO WATCH IS IN EFFECT. SEVERE THUNDERSTORMS CAN AND DO PRODUCE
TORNADOES WITH LITTLE OR NO ADVANCE WARNING. PREPARE TO MOVE TO A
PLACE OF SAFETY IN A STURDY STRUCTURE SUCH AS A BASEMENT OR SMALL
INTERIOR ROOM IF A TORNADO IS SPOTTED.


LAT...LON 3044 9928 3022 9927 3024 9867 3045 9872

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 28, 9:08 PM CDT, 51 minutes earlier.

Area forecast discussion, Oct 28, 9:08 PM CDT, 51 minutes before
SOUTH CENTRAL TEXAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
908 PM CDT SAT OCT 28 2000

A PAIR OF LINES OF THUNDERSTORMS ARE SKIRTING THE NORTHERN ONE-
QUARTER OF OUR CWFA AND WILL THREATEN THE AUSTIN AREA IN THE NEXT
2-3 HOURS. NEW WARNING OUT FOR GILLESPIE COUNTY WITH CELLS BEGINNING
TO PROPAGATE FARTHER SOUTHWEST. WILL UPDATE TO MENTION LATEST
TORNADO WATCH AND REMOVE THE PREVIOUS ONE THAT EXPIRES AT 9 PM FOR
OUT WEST. WILL LEAVE MENTION OF SEVERE OUT WEST AS TRAILING 2ND LINE
OF STORMS WILL CLIP PARTS OF THESE COUNTIES. FLOOD THREAT IS STILL
LOW WITH THE SPEED OF THESE STORMS...BUT 1 OR 2 FLASH FLOOD WARNINGS
ARE NOT OUT OF THE QUESTION WITH THE STRONGER CELLS AND THE CURRENT
FLASH FLOOD GUIDANCES AROUND AN INCH IN SPOTS. CURRENT FORECAST
STILL APPEARS TO HANDLE THIS SEVERE WEATHER/HEAVY RAIN SCENARIO WELL;
ONLY SIGNIFICANT CHANGE IN FORECAST WILL BE TO INCREASE POPS INTO
LIKBELY CATEGORY FOR ALL COUNTIES IN WATCH AREA.

.EWX...NONE.

18/2

The office that day

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

IssuedProductOfficeCountiesLasted
Oct 28, 7:03 PM CDTTornado WarningEWXEdwards57 min
Oct 28, 7:57 PM CDTSevere Thunderstorm WarningEWXEdwards48 min
Oct 28, 9:01 PM CDTSevere Thunderstorm WarningEWXGillespie59 min

Nearby

Severe Thunderstorm Warnings in Texas, 2000Every severe thunderstorm warning in 2000

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.