Alert archive / Texas / Severe Thunderstorm Warnings in 2001
Severe Thunderstorm Warning 46, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this severe thunderstorm warning at Apr 23, 2001, 12:16 PM CDT for Bexar County, Texas. It was in force for 59 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
- Apr 23, 2001, 12:16 PM CDT (17:16 UTC)
- Expired
- Apr 23, 2001, 1:15 PM CDT
- In force
- 59 min
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
County Bexar County, TX
The nearest sounding before it
Corpus Christi, TX (KCRP), launched 12:00Z, 5.3 hours before the alert went out and 215 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
- 1138 J/kg
- Mixed-layer CIN
- -81 J/kg
- Mixed-layer LCL
- 612 m above ground
- 0-6 km bulk shear
- 21 kt
- 0-1 km storm-relative helicity
- 87 m²/s²
- 0-3 km storm-relative helicity
- 206 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.8
The text
As transmitted, in the capitals the NWS used until 2016.
539 WUUS54 KEWX 231716 SVRSAT TXC029-231815- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 1216 PM CDT MON APR 23 2001 THE NATIONAL WEATHER SERVICE HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR THE FOLLOWING COUNTIES IN TEXAS... BEXAR COUNTY * UNTIL 115 PM CDT * AT 1216 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM OVER CHINA GROVE...OR ABOUT 7 MILES SOUTHEAST OF SAN ANTONIO...MOVING NORTHEAST AT 20 MPH. * THE SEVERE THUNDERSTORM WILL BE... 5 MILES SOUTHEAST OF WINDCREST AT 1225 PM CDT 5 MILES SOUTHEAST OF LIVE OAK AT 1235 PM CDT 3 MILES SOUTHEAST OF UNIVERSAL CITY AT 1240 PM CDT HAIL UP TO ONE AND ONE HALF INCHES IN DIAMETER HAS BEEN REPORTED WITH THIS STORM. IF YOU ARE IN THE PATH OF THE STORM...PUT YOUR CAR IN A GARAGE AND MOVE TO A SUBSTANTIAL SHELTER. LAT...LON 2943 9852 2930 9838 2946 9814 2957 9832
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 Apr 23, 11:02 AM CDT, 1 hour 14 minutes earlier.
Area forecast discussion, Apr 23, 11:02 AM CDT, 1 hour 14 minutes before
SOUTH CENTRAL TEXAS FORECAST DISCUSSION NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 1102 AM CDT MON APR 23 2001 SMALL CLUSTER OF VERY HEAVY RAINFALL CONTINUES IN THE SAN ANTONIO AREA WITH A FEW REPORTS OF 3 TO 3.5 INCHES OF RAIN. CLUSTER HAS SHOWN SIGNS OF WEAKENING IN INTENSITY AS REDEVELOPMENT TAKES PLACE JUST WEST. THESE THE RESULT OF SHORT-WAVE AHEAD OF COLD FRONT. MODELS INDICATE SHORT-WAVE WILL MOVE EAST BY EVENING. SO...WILL MAINTAIN HIGH POPS AND SEVERE/HEAVY RAINFALL MENTIONS...ESPECIALLY SOUTH AND EAST FOR THIS AFTERNOON. HOWEVER...FLASH FLOOD WATCH CONTINUES TO BE NOT NEEDED AS WIDESPREAD FLOODING NOT EXPECTED. WILL MAKE SOME ADJUSTMENTS TO WINDS AND TEMPERATURES BASED ON ONGOING TRENDS. ANY CHANGES TO REMAINING PERIODS WILL WAIT UNTIL AFTERNOON PACKAGE. 04/06. .EWX...NONE.
In the hours before
Special weather statement, Apr 23, 6:18 AM CDT, 5 hours 58 minutes before
TXZ171>173-183>194-202>209-217>225-228-231300- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 618 AM CDT MON APR 23 2001 EARLY THIS MORNING AN AREA OF SHOWERS AND THUNDERSTORMS WAS FROM THE AUSTIN AREA WEST TO PARTS OF THE TEXAS HILL COUNTRY AND EXTENDED SOUTH TO THE SAN ANTONIO AREA...HONDO AND UVALDE. AN UPPER LEVEL WEATHER SYSTEM AND ITS ASSOCIATED COOL FRONT MOVING ACROSS CENTRAL AND SOUTH CENTRAL TEXAS TODAY WILL BODE WELL FOR MOSTLY CLOUDY SKIES...ALONG WITH A CHANCE OF RAIN...SHOWERS AND THUNDERSTORMS. SOME OF THE THUNDERSTORMS MAY BECOME SEVERE WITH LOCALLY HEAVY RAIN POSSIBLE. TO THE NORTH...A SURGE OF COOLER AIR IS EXPECTED TO MOVE THROUGH THE AREA TODAY...KEEPING DAYTIME TEMPERATURES BELOW NORMAL. COOLER TEMPERATURES ARE EXPECTED TONIGHT. ANOTHER WEATHER SYSTEM ALOFT WILL MOVE OVER THE AREA TONIGHT...BRINGING A CHANCE OF RAIN OR SHOWERS TO THE EAST AND SOUT|HEAT PARTS OF SOUTH CENTRAL TEXAS. ADDITIONAL STATEMENTS WILL BE ISSUED AS CONDITIONS WARRANT.
Special weather statement, Apr 23, 7:06 AM CDT, 5 hours 10 minutes before
TXZ171>173-183>194-202>209-217>225-228-231400- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 706 AM CDT MON APR 23 2001 AT 706 AM...AN AREA OF SHOWERS AND THUNDERSTORMS WAS FROM THE GEORGETOWN AND AUSTIN AREAS TO THE SAN ANTONIO AREA... THEN WEST TO NEAR HONDO. AN AREA OF SCATTERED SHOWERS AND THUNDERSTORMS WAS ALSO INDICATED BETWEEN UVALDE AND EAGLE PASS. AN UPPER LEVEL WEATHER SYSTEM AND ITS ASSOCIATED COOL FRONT MOVING ACROSS CENTRAL AND SOUTH CENTRAL TEXAS WAS PRODUCING THESE SHOWERS AND THUNDERSTORMS. THIS PATTERN WILL BODE WELL FOR MOSTLY CLOUDY SKIES...ALONG WITH A CHANCE OF RAIN...SHOWERS AND THUNDERSTORMS THIS MORNING. SOME OF THE THUNDERSTORMS MAY BECOME SEVERE WITH LOCALLY HEAVY RAIN POSSIBLE AND OCCASIONAL LIGHTNING. TO THE NORTH...A SURGE OF COOLER AIR IS EXPECTED TO MOVE THROUGH THE AREA TODAY...KEEPING DAYTIME TEMPERATURES BELOW NORMAL. COOLER TEMPERATURES ARE EXPECTED TONIGHT. ANOTHER WEATHER SYSTEM ALOFT WILL MOVE OVER THE AREA TONIGHT...AND MAY CAUSE A CHANCE OF RAIN OR SHOWERS OVER THE EAST AND SOUTHEAT PARTS OF SOUTH CENTRAL TEXAS. ON TUESDAY SKIES ARE EXPECTED TO BECOME PARTL?Y CLOUDY AND THEN MOSTLY SUNNY. MOSTLY CLEAR SKIES ARE EXPECTED TUESDAY NIGHT. ADDITIONAL STATEMENTS WILL BE ISSUED AS CONDITIONS WARRANT.
Local storm report, Apr 23, 10:03 AM CDT, 2 hours 13 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO, TX
1003 AM CDT MON APR 23 2001
TIME(CDT) .....CITY LOCATION.....STATE ...EVENT/REMARKS...
....COUNTY LOCATIONR....
0400 AM 13 N VANDERPOOL TX TORNADO
04/23/01 BANDERA TORNADO REPORTED BY CO-OP
OBSERVERSThe office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 22, 11:15 PM CDT | Severe Thunderstorm Warning | EWX | Val Verde | 60 min |
| Apr 23, 12:11 AM CDT | Severe Thunderstorm Warning | EWX | Val Verde | 64 min |
| Apr 23, 12:21 AM CDT | Severe Thunderstorm Warning | EWX | Edwards | 69 min |
| Apr 23, 12:54 AM CDT | Flash Flood Warning | EWX | Val Verde | 3 hr |
| Apr 23, 1:18 AM CDT | Severe Thunderstorm Warning | EWX | Val Verde | 42 min |
| Apr 23, 2:02 AM CDT | Flash Flood Warning | EWX | Edwards | 118 min |
| Apr 23, 3:24 AM CDT | Severe Thunderstorm Warning | EWX | Bandera, Kerr | 66 min |
| Apr 23, 7:50 AM CDT | Flash Flood Warning | EWX | Bexar, Comal | 115 min |
| Apr 23, 9:20 AM CDT | Flash Flood Warning | EWX | Bexar, Comal | 3 hr |
| Apr 23, 9:39 AM CDT | Flash Flood Warning | EWX | Guadalupe | 3 hr |
| Apr 23, 12:07 PM CDT | Flash Flood Warning | EWX | Bexar, Medina | 4 hr |
| Apr 23, 12:49 PM CDT | Severe Thunderstorm Warning | EWX | Medina | 41 min |
| Apr 23, 1:31 PM CDT | Severe Thunderstorm Warning | EWX | Gonzales, Guadalupe | 59 min |
| Apr 23, 2:05 PM CDT | Severe Thunderstorm Warning | EWX | Bexar | 55 min |
| Apr 23, 2:18 PM CDT | Severe Thunderstorm Warning | EWX | Wilson | 57 min |
| Apr 23, 3:10 PM CDT | Flash Flood Warning | EWX | Bexar | 5 hr |
| Apr 23, 4:10 PM CDT | Severe Thunderstorm Warning | EWX | Wilson | 50 min |
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; the sounding from the Mesonet's radiosonde archive.