Alert archive / Texas / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 169, NWS Austin/San Antonio, TX

November 2, 2000Blanco County, Hays County, Texas

NWS Austin/San Antonio, TX issued this severe thunderstorm warning at Nov 2, 2000, 3:27 PM CST for Blanco County, Hays County, Texas. It was in force for 63 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: Nov 2, 2000, 3:27 PM CST (21:27 UTC)
Expired: Nov 2, 2000, 4:30 PM CST
In force: 63 min
Issued by: NWS Austin/San Antonio, TX
Area: Whole counties; the outline is the Mesonet’s reconstruction

Counties Blanco County, TX, Hays County, TX

The radar

The Austin/San Antonio radar (KEWX), 56 km from the middle of the area, began a volume at 21:27 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.

Issued	Product	Office	Lasted
Nov 2, 1:15 PM CST	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Del Rio, TX (KDRT), launched 12:00Z, 9.5 hours before the alert went out and 265 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 463 J/kg
Mixed-layer CIN: -125 J/kg
Mixed-layer LCL: 849 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: 80 m²/s²
0-3 km storm-relative helicity: 212 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 2.7

Open this sounding in Storm Lab

The text

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

000 
WUUS54 KEWX 022128
SVRSAT
TXC031-209-022230-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
327 PM CST THU NOV 2 2000

THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS ISSUED A

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

* UNTIL 430 PM CST

* AT 327 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 6 MILES SOUTH OF JOHNSON CITY...OR ABOUT 7
  MILES NORTH OF BLANCO...MOVING EAST AT 5 MPH.

THIS THUNDERSTORM HAS A HISTORY OF PRODUCING MARBLE SIZE HAIL.  
IF YOU ARE IN THE PATH OF THE STORM...PUT YOUR CAR IN A GARAGE AND 
MOVE TO A SUBSTANTIAL SHELTER.  STRONG...DAMAGING WINDS ARE ALSO A 
THREAT.  


LAT...LON 3030 9839 3015 9848 2995 9803 3015 9798

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 Nov 2, 2:45 PM CST, 42 minutes earlier.

Area forecast discussion, Nov 2, 2:45 PM CST, 42 minutes before

SOUTH CENTRAL TEXAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
245 PM CST THU NOV 2 2000

NUMBER OF FACTORS COMING INTO PLAY THIS AFTERNOON THAT HAS RESULTED
IN THE THREAT OF HEAVY RAINFALL OVERNIGHT INTO FRI.  WK NE-SW ORIENTED
FRONTAL BOUNDARY REMAINS NEARLY STATIONARY ACROSS THE HILL COUNTRY
WITH VERY MOIST UNSTABLE AMS(LAPS LI'S -6 TO -8) SOUTH OF THE FNT.
PW'S FORECAST TO CONT WELL ABOVE NORMAL IN THE 1.5 TO NR 2 INCHES
FOR THE NEXT 24 TO 36 HRS WITH AN INVERTED TROF/CDFNT FORMING FRI
AFTN/EVENING.  SWLY FLOW ALOFT NEARLY PARALLEL TO THE SFC BOUNDARY
LIKELY TO RESULT IN TRAINING ECHOES ALONG THE BOUNDARY.  IN ADDITION
THREAT OF SVR AS STG SUBTRPL JET PUNCHES NEWD FM MEX INTO W CNTRL TX
OVERNIGHT...WITH MUCH OF CWA IN RRQ OF JET MAX THRU THE EVENING AS
PER ETA.  APPEARS THREAT OF HEAVY RAIN TO CONT THRU FRI NIGHT AS SFC
BOUNDARY GETS PUSHED BACK THRU THE CWA BEHIND BUILDING SFC RDG AND
PERHAPS A TEMPORARY DECREASE IN POPS FROM THE WEST SATURDAY...BEFORE
OVERRUNNING RESUMES SUN/MON.  ANOTHER WET CDFNT TUE AS ANOTHER LOW
LAT LOW KICKS OUT NEWD FROM NRN MEX INTO TX WED/THU.

WIDESPREAD RAINFALL TOTALS OF 1 TO 3 INCHES EXPECTED ACROSS WATCH
AREA NEXT 12-24 HOURS WITH ISOLD 4 TO 6 INCHES.  FFA WILL BE ISSUED
FOR ALL BUT THREE SWRN COUNTIES WHERE FLASH FLOOD GUID NUMBERS
REMAIN RELATIVELY HIGH.

PRELIMS...
AUS 68/78 63/68 8887
SAT 71/79 65/72 8887
DR/T 65/74 59/69 8876

.EWX...FLASH FLOOD WATCH S CNTRL TX AND HILL COUNTRY THRU FRI
       MORNING.
       RIVER FLOOD WATCH PORTIONS OF CENTRAL TX THRU FRI EVENING.
       SEVERE TSTM WATCH UNTIL 6 PM CST.

01/13

The office that day

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

Issued	Product	Office	Counties	Lasted
Nov 2, 2:34 PM CST	Severe Thunderstorm Warning	EWX	Blanco, Kendall	56 min
Nov 2, 2:47 PM CST	Severe Thunderstorm Warning	EWX	Caldwell, Gonzales	58 min
Nov 2, 2:58 PM CST	Severe Thunderstorm Warning	EWX	Bastrop, Travis	62 min
Nov 2, 3:37 PM CST	Severe Thunderstorm Warning	EWX	Bandera, Kerr	53 min
Nov 2, 3:39 PM CST	Flash Flood Warning	EWX	Travis	3 hr
Nov 2, 4:16 PM CST	Severe Thunderstorm Warning	EWX	Hays, Travis	59 min
Nov 2, 4:19 PM CST	Flash Flood Warning	EWX	Bandera, Kendall, Kerr	3 hr
Nov 2, 4:48 PM CST	Tornado Warning	EWX	Kendall, Kerr	27 min
Nov 2, 4:51 PM CST	Flash Flood Warning	EWX	Lee	3 hr
Nov 2, 5:21 PM CST	Flash Flood Warning	EWX	Blanco	3 hr

Nearby

Severe Thunderstorm Warnings in Texas, 2000 Every 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.