Alert archive / Texas / Severe Thunderstorm Warnings in 2001
Severe Thunderstorm Warning 68, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this severe thunderstorm warning at May 6, 2001, 9:42 PM CDT for Hays County, Texas. It was in force for 63 min. 1 report came from 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, with what was reported inside it.
The facts
- Issued
- May 6, 2001, 9:42 PM CDT (02:42 UTC)
- Expired
- May 6, 2001, 10:45 PM CDT
- In force
- 63 min
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
County Hays County, TX
The radar
The Austin/San Antonio radar (KEWX), 45 km from the middle of the area, began a volume at 02:51 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| May 6, 10:15 PM CDT | Hail 1.75 | Dripping Spgs, TX |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.
The nearest sounding before it
Corpus Christi, TX (KCRP), launched 00:00Z, 2.7 hours before the alert went out and 274 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.
- Mixed-layer CAPE
- 2134 J/kg
- Mixed-layer CIN
- -1 J/kg
- Mixed-layer LCL
- 695 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- -9 m²/s²
- 0-3 km storm-relative helicity
- -5 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 0.6
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS54 KEWX 070242 SVRSAT TXC209-070345- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 942 PM CDT SUN MAY 6 2001 THE NATIONAL WEATHER SERVICE HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR THE FOLLOWING COUNTIES IN TEXAS... HAYS * UNTIL 1045 PM CDT * AT 942 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM OVER DRIPPING SPRINGS...OR ABOUT 3 MILES SOUTHWEST OF DRIPPING SPRINGS...MOVING EAST AT 15 MPH. * THE SEVERE THUNDERSTORM WILL BE... 3 MILES SOUTH OF DRIPPING SPRINGS AT 950 PM OVER DRIFTWOOD AT 1005 PM 2 MILES NORTH OF BUDA AT 1045 PM LAT...LON 3032 9816 3003 9829 2983 9799 3003 9776
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 6, 9:25 PM CDT, 17 minutes earlier.
Area forecast discussion, May 6, 9:25 PM CDT, 17 minutes before
SOUTH CENTRAL TEXAS FORECAST DISCUSSION...CORRECTION NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 925 PM CDT SUN MAY 6 2001 NOT MUCH TIME TO FIDDLE AS ACTIVE WEATHER OCCURRING. HIGH CAPES (ABOVE 2000) OVER MUCH OF AREA THIS EVENING WITH WIDESPREAD HAIL EVENT IN PROGRESS. THIS SHOWING ATMOSPHERE TO BE QUITE UNSTABLE.. DBZS (REFLECTIVITIES) ON RADAR ARE GRADUALLY GOING DOWN AT THIS HOUR.... UPDATED PPRELIMINARY NUMBERS... AUS 069/083/066/081 5353 DRT 068/090/068/087 2232 SAT 071/085/067/083 4243 .EWX...NONE. 02/19
In the hours before
Local storm report, May 6, 9:28 PM CDT, 14 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO, TX
928 PM CDT SUN MAY 6 2001
TIME(CDT) .....CITY LOCATION.....STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0534 PM 81/2 NNW LLANO TX .75 INCH HAIL
05/06/01 LLANO REPORTED BY
SPOTTERS
0548 PM 81/2 NNW LLANO TX 1.25 INCH HAIL
05/06/01 LLANO REPORTED BY
SPOTTERS
0610 PM 1 E LLANO TX 1.75 INCH HAIL
05/06/01 LLANO REPORTED BY
SPOTTERS
0615 PM 8 E LLANO TX TORNADO
05/06/01 LLANO LARGE FUNNEL CLOUD
REPORTED BY PUBLIC.
0618 PM 2 E LLANO TX 2.75 INCH HAIL
05/06/01 LLANO REPORTED BY
PUBLIC
0640 PM BUCHANAN DAM TX 1.00 INCH HAIL
05/06/01 LLANO REPORTED BY
PUBLIC
0645 PM 3 W LYTLE TX 1.50 INCH HAIL
05/06/01 ATASCOSA REPORTED BY CO-OP
OBSERVERS
0645 PM BUCHANAN DAM TX 1.00 INCH HAIL
05/06/01 LLANO REPORTED BY
HAM
0700 PM 8 SW BURNET TX 1.00 INCH HAIL
05/06/01 BURNET REPORTED BY
PUBLIC
0720 PM VALLEY DRIVE SAN ANTONIO TX .75 INCH HAIL
05/06/01 BEXAR REPORTED BY
NWS EMPLOYEE
0735 PM LEON VALLEY TX 1.00 INCH HAIL
05/06/01 BEXAR REPORTED BY
HAM
0738 PM DEZAVALA AND VANCE JACKSON SAN ANTONIOTX 4.50 INCH HAIL
05/06/01 BEXAR REPORTED BY RETIRED NWS
EMPLOYEE
0750 PM DEZAVALA AND BABCOCK SAN ANTONIOTX 2.00 INCH HAIL
05/06/01 BEXAR REPORTED BY
PUBLIC
0750 PM DEZAVALA AND I 10 SAN ANTONIOTX 2.75 INCH HAIL
05/06/01 BEXAR REPORTED BY
HAM
0755 PM I 10 AND HUEBNER SAN ANTONIOTX 2.00 INCH HAIL
05/06/01 BEXAR REPORTED BY
NWS EMPLOYEE
0755 PM CAMP BULLIS TX 1.75 INCH HAIL
05/06/01 BEXAR REPORTED BY NWS EMPLOYEE
DCLocal storm report, May 6, 9:39 PM CDT, 3 minutes before
PRELIMINARY LOCAL STORM REPORT...COR
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO, TX
939 PM CDT SUN MAY 6 2001
TIME(CDT) .....CITY LOCATION.....STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0534 PM 81/2 NNW LLANO TX .75 INCH HAIL
05/06/01 LLANO REPORTED BY
SPOTTERS
0548 PM 81/2 NNW LLANO TX 1.25 INCH HAIL
05/06/01 LLANO REPORTED BY
SPOTTERS
0610 PM 1 E LLANO TX 1.75 INCH HAIL
05/06/01 LLANO REPORTED BY
SPOTTERS
0615 PM 8 E LLANO TX TORNADO
05/06/01 LLANO LARGE FUNNEL CLOUD
REPORTED BY PUBLIC.
0618 PM 2 E LLANO TX 2.75 INCH HAIL
05/06/01 LLANO REPORTED BY
PUBLIC
0640 PM BUCHANAN DAM TX 1.00 INCH HAIL
05/06/01 LLANO REPORTED BY
PUBLIC
0645 PM 3 W LYTLE TX 1.50 INCH HAIL
05/06/01 ATASCOSA REPORTED BY CO-OP
OBSERVERS
0645 PM BUCHANAN DAM TX 1.00 INCH HAIL
05/06/01 LLANO REPORTED BY
HAM
0700 PM 8 SW BURNET TX 1.00 INCH HAIL
05/06/01 BURNET REPORTED BY
PUBLIC
0720 PM VALLEY DRIVE SAN ANTONIO TX .75 INCH HAIL
05/06/01 BEXAR REPORTED BY
NWS EMPLOYEE
0735 PM LEON VALLEY TX 1.00 INCH HAIL
05/06/01 BEXAR REPORTED BY
HAM
0738 PM DEZAVALA AND VANCE JACKSON SAN ANTONIOTX 4.50 INCH HAIL
05/06/01 BEXAR REPORTED BY RETIRED NWS
EMPLOYEE
0750 PM DEZAVALA AND BABCOCK SAN ANTONIOTX 2.00 INCH HAIL
05/06/01 BEXAR REPORTED BY
PUBLIC
0750 PM DEZAVALA AND I 10 SAN ANTONIOTX 2.75 INCH HAIL
05/06/01 BEXAR REPORTED BY
HAM
0755 PM I 10 AND HUEBNEjR SAN ANTONIOTX 2.00 INCH HAIL
05/06/01 BEXAR REPORTED BY
NWS EMPLOYEE
0755 PM CAMP BULLIS TX 1.75 INCH HAIL
05/06/01 BEXAR REPORTED BY NWS EMPLOYEEThe office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 6, 7:06 PM CDT | Severe Thunderstorm Warning | EWX | Bexar | 54 min |
| May 6, 7:45 PM CDT | Severe Thunderstorm Warning | EWX | Burnet, Travis, Williamson | 60 min |
| May 6, 7:45 PM CDT | Severe Thunderstorm Warning | EWX | Atascosa, Frio, Medina | 60 min |
| May 6, 8:08 PM CDT | Severe Thunderstorm Warning | EWX | Dimmit, Zavala | 52 min |
| May 6, 10:03 PM CDT | Flash Flood Warning | EWX | Bastrop, Hays, Lee, Travis, Williamson | 3 hr |
| May 6, 11:31 PM CDT | Flash Flood Warning | EWX | Fayette | 3 hr |
Nearby
Severe Thunderstorm Warnings in Texas, 2001Every severe thunderstorm warning in 2001
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.