Alert archive / Texas / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 118, NWS Austin/San Antonio, TX

May 1, 2000Travis County, Williamson County, Texas

NWS Austin/San Antonio, TX issued this severe thunderstorm warning at May 1, 2000, 8:06 PM CDT for Travis County, Williamson County, Texas. It was in force for 54 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
May 1, 2000, 8:06 PM CDT (01:06 UTC)
Expired
May 1, 2000, 9:00 PM CDT
In force
54 min
Issued by
NWS Austin/San Antonio, TX
Area
Whole counties; the outline is the Mesonet’s reconstruction

Counties Travis County, TX, Williamson County, TX

The nearest sounding before it

Fort Worth, TX (KFWD), launched 00:00Z, 1.1 hours before the alert went out and 247 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 2000-05-02Temperature 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 00:00Z on 2000-05-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -10 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
1535 m above ground
0-6 km bulk shear
46 kt
0-1 km storm-relative helicity
-10 m²/s²
0-3 km storm-relative helicity
47 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.

000 
WUUS54 KEWX 020108
SVRSAT
TXC453-491-020200-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
806 PM CDT MON MAY 1 2000

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

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

* UNTIL 900 PM CDT

* AT 806 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 12 MILES NORTH OF LAGO VISTA...OR ABOUT 9 MILES
  SOUTH OF BERTRAM...MOVING EAST TO NORTHEAST AT 25 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  CEDAR PARK AND LEANDER AT 825 PM
  JOLLYVILEE NEAR 835 PM
   
VERY LARGE HAIL IS POSSIBLE WITH THIS SEVERE THUNDERSTORM. IF YOU ARE
IN THE PATH OF THE STORM...PUT YOUR CAR IN A GARAGE AND MOVE TO A
SUBSTANTIAL SHELTER.


LAT...LON 3078 9795 3044 9812 3043 9764 3085 9757

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 May 1, 2:00 PM CDT, 6 hours 6 minutes earlier.

Area forecast discussion, May 1, 2:00 PM CDT, 6 hours 6 minutes before
SOUTH CENTRAL TEXAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
200 PM CDT MON MAY 1 2000

SATELLITE PIC HAS AMPLY MID AND HIGH CLOUDS AND MOISTURE CONTINUING
FROM THE WEST OVER THE CWA. RAIN AND CONVECTIVE ACTIVITY OCCURRING
WITH THE MCS LAST NIGHT AND THIS MORNING HAVE MOVED NORTHEAST.
HIGH PRESSURE RIDGE OVER COLORADO IS SLIDING SOUTHEAST...LOW PRESSURE
OVER EASTERN OKLAHOMA/ARKANSAS MOVING NORTHEAST...FRONT OVER HILL
COUNTY BEGINNING TO SLOWLY SLID EASTWARD THROUGH REMAINING CWA. ALL
THIS LEADS ME TO BELIEVE THAT CONVECTIVE ACTIVITY WILL CONTINUE OVER
THE CWA THROUGH TONIGHT AND INTO TUESDAY AS A OVER-RUNNING CONDITIONS
PREVAILS...HOWEVER BRIEF AND ISOLATED IT MAY BE.

FRONT NOT MOVING FAST ENOUGH TO CLEAR THE CWA BEFORE TONIGHT AS GULF
HIGH DEW-POINTS VALUES INFLOW CONTINUES TO SLIDE NORTH UP OVER HILL
COUNTRY COUNTIES AND PORTIONS OF SOUTH CENTRAL SECTIONS. ISOLATED
CONVECTIVE ACTIVITY CONTINUES TO FIRER ALONG BOUNDARIES CREATED FROM
THE EARLIER ACTIVITY.

EXPECT CONVECTIVE ACTIVITY TO INCREASE TONIGHT. SURFACE DEW-POINT
DRIER IN THE WESTERN COUNTIES BUT STILL REMAIN IN THE 60S OVER THE
EASTERN SECTIONS.

WILL KEEP ISOLATED BRIEF LOCALLY HEAVY RAIN AND SEVERE WEATHER THREAT
FOR TONIGHT'S FORECAST. AS SPC STILL HAS SEVERE MENTION FOR ENTIRE
CWA MONDAY NIGHT.

EXTENDED FORECAST...WEDNESDAY THROUGH FRIDAY STILL HAS CWA UNDER
MOSTLY CLOUDY SKIES...20 TO 30 PERCENT POPS.

PRELIMINARY NUMBERS...

DRT 62/81/62/85 3222
AUS 61/74/61/80 4332
SAT 60/76/62/82 4322

.EWX...NONE.

The office that day

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

IssuedProductOfficeCountiesLasted
May 1, 7:06 PM CDTSevere Thunderstorm WarningEWXBlanco39 min
May 1, 7:15 PM CDTSevere Thunderstorm WarningEWXLlano45 min
May 1, 7:29 PM CDTSevere Thunderstorm WarningEWXBurnet61 min
May 1, 8:58 PM CDTSevere Thunderstorm WarningEWXWilliamson47 min
May 1, 10:01 PM CDTSevere Thunderstorm WarningEWXLee29 min
May 2, 12:35 AM CDTFlash Flood WarningEWXWilliamson115 min
May 2, 12:53 AM CDTFlash Flood WarningEWXBastrop, Caldwell, Hays, Lee, Travis3 hr
May 2, 12:58 AM CDTFlash Flood WarningEWXKerr3 hr

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.