Alert archive / Texas / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 158, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this severe thunderstorm warning at Jun 20, 1997, 7:51 PM CDT for Val Verde County, Texas. It was in force for 69 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Jun 20, 1997, 7:51 PM CDT (00:51 UTC)
- Expired
- Jun 20, 1997, 9:00 PM CDT
- In force
- 69 min
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Whole counties
County Val Verde County, TX
The radar
The Laughlin AFB radar (KDFX), 109 km from the middle of the area, began a volume at 00:51 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.
The nearest sounding before it
Del Rio, TX (KDRT), launched 00:00Z, 0.9 hours before the alert went out and 66 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
- 3878 J/kg
- Mixed-layer CIN
- -3 J/kg
- Mixed-layer LCL
- 918 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- 25 m²/s²
- 0-3 km storm-relative helicity
- 127 m²/s²
- Significant tornado parameter
- 1.0
- Supercell composite
- 4.8
The text
As transmitted, in the capitals the NWS used until 2016.
594 WUUS1 KSAT 210052 RRA SVRSAT TXC465-210200- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 751 PM CDT FRI JUN 20 1997 THE NATIONAL WEATHER SERVICE IN AUSTIN/SAN ANTONIO HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 900 PM CDT FOR PEOPLE IN THE FOLLOWING LOCATION... IN SOUTH CENTRAL TEXAS ...VAL VERDE COUNTY AT 750 PM NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A LINE OF STRONG TO SEVERE THUNDERSTORMS FROM SOUTH OF LANGTRY TO EAST OF PANDALE. THIS STORM WILL MOVE ACROSS LAKE AMISTAD BETWEEN 8 PM AND 820 PM. DAMAGING WINDS ARE LIKELY WITH THIS STORM. PEOPLE SHOULD MOVE OFF LAKE AMISTAD NOW SEVERE THUNDERSTORM WINDS CAN REACH SPEEDS OVER 60 MPH. THESE WINDS BLOW DOWN TREES...POWER LINES...AND SEVERELY DAMAGE MOBILE HOMES... SOMETIMES BUILDINGS. VERY LARGE HAIL CAN INJURE ANYONE CAUGHT OUTSIDE. PEOPLE IN THE PATH OF THIS STORM SHOULD BE ALERT TO THE POSSIBILITY OF LARGE HAIL AND DAMAGING WINDS. FREQUENT LIGHTNING AND LOCALLY HEAVY RAIN CAN ALSO OCCUR WITH SEVERE THUNDERSTORMS...FLOODING SMALL STREAMS...LOW AREAS...AND LOW WATER CROSSINGS.
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.
In the hours before
Special weather statement, Jun 20, 5:06 PM CDT, 2 hours 45 minutes before
TXZ171>173-183>194-202>209-217>225-228-211200- HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 506 PM CDT FRI JUN 20 1997 THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS TONIGHT OVER THE NORTHWEST HILL COUNTRY...ESPECIALLY WEST OF A LINE FROM JUNCTION TO BRACKETTVILLE TO QUEMADO. THUNDERSTORMS HAVE DEVELOPED ALONG A DRY LINE IN WEST TEXAS THIS AFTERNOON. THESE STORMS ARE TRANSLATING SLOWLY EASTWARD AS THIS DRYLINE BOUNDARY MOVES EAST. IF THESE STORMS MOVE INTO THE UNSTABLE AIRMASS OVER WESTERN COUNTIES OF SOUTH CENTRAL TEXAS...DAMAGING WINDS AND LARGE HAIL ARE POSSIBLE. AFTER SUNSET THE DYNAMICS FOR SEVERE THUNDERSTORM DEVELOPMENT MAY SPREAD EASTWARD INTO THE TEXAS HILL COUNTRY. STORMS THAT SURVIVE INTO THE LATE EVENING HAVE THE POTENTIAL TO PRODUCE ISOLATED SEVERE WEATHER OVER THE HILL COUNTRY OVERNIGHT. THUNDERSTORMS THAT TRANSLATE INTO SOUTH CENTRAL TEXAS THIS EVENING AND TONIGHT WILL PRODUCE SCATTERED RAINFALL AMOUNTS OF 1/4 TO 1/2 INCH WITH ISOLATED TOTALS TO TWO INCHES POSSIBLE. NEARBY HAZARDOUS WEATHER OUTLOOKS INCLUDE: FOR SOUTHWEST TEXAS...FROM MIDLAND...LBBSPSMAF FOR THE CONCHO VALLEY...FROM SAN ANGELO...LBBSPSSJT FOR NORTH TEXAS...FROM FORT WORTH...FTWSPSFTW FOR SOUTHEAST TEXAS...FROM HOUSTON/GALVESTON...SATSPSHOU FOR COASTAL BEND/RIO GRANDE PLAINS...FROM CORPUS CHRISTI...SATSPSCRP THE HAZARDOUS WEATHER OUTLOOK NORMALLY WILL BE UPDATED BY MEANS OF THE ZONE FORECASTS...SHORT TERM FORECAST...WATCHES...WARNINGS...AND ADVISORIES. THE HAZARDOUS WEATHER OUTLOOK ITSELF WILL BE UPDATED ONLY IF UNEXPECTED HAZARDOUS WEATHER DEVELOPS OR IF EXPECTED HAZARDOUS WEATHER NO LONGER IS FORECAST TO DEVELOP.
Special weather statement, Jun 20, 5:08 PM CDT, 2 hours 43 minutes before
TXZ171>173-183>194-202>209-217>225-228-211200- HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 506 PM CDT FRI JUN 20 1997 THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS TONIGHT OVER THE NORTHWEST HILL COUNTRY...ESPECIALLY WEST OF A LINE FROM JUNCTION TO BRACKETTVILLE TO QUEMADO. THUNDERSTORMS HAVE DEVELOPED ALONG A DRY LINE IN WEST TEXAS THIS AFTERNOON. THESE STORMS ARE TRANSLATING SLOWLY EASTWARD AS THIS DRYLINE BOUNDARY MOVES EAST. IF THESE STORMS MOVE INTO THE UNSTABLE AIRMASS OVER WESTERN COUNTIES OF SOUTH CENTRAL TEXAS...DAMAGING WINDS AND LARGE HAIL ARE POSSIBLE. AFTER SUNSET THE DYNAMICS FOR SEVERE THUNDERSTORM DEVELOPMENT MAY SPREAD EASTWARD INTO THE TEXAS HILL COUNTRY. STORMS THAT SURVIVE INTO THE LATE EVENING HAVE THE POTENTIAL TO PRODUCE ISOLATED SEVERE WEATHER OVER THE HILL COUNTRY OVERNIGHT. THUNDERSTORMS THAT TRANSLATE INTO SOUTH CENTRAL TEXAS THIS EVENING AND TONIGHT WILL PRODUCE SCATTERED RAINFALL AMOUNTS OF 1/4 TO 1/2 INCH WITH ISOLATED TOTALS TO TWO INCHES POSSIBLE. NEARBY HAZARDOUS WEATHER OUTLOOKS INCLUDE: FOR SOUTHWEST TEXAS...FROM MIDLAND...LBBSPSMAF FOR THE CONCHO VALLEY...FROM SAN ANGELO...LBBSPSSJT FOR NORTH TEXAS...FROM FORT WORTH...FTWSPSFTW FOR SOUTHEAST TEXAS...FROM HOUSTON/GALVESTON...SATSPSHOU FOR COASTAL BEND/RIO GRANDE PLAINS...FROM CORPUS CHRISTI...SATSPSCRP THE HAZARDOUS WEATHER OUTLOOK NORMALLY WILL BE UPDATED BY MEANS OF THE ZONE FORECASTS...SH,ORT TERM FORECAST...WATCHES...WARNINGS...AND ADVISORIES. THE HAZARDOUS WEATHER OUTLOOK ITSELF WILL BE UPDATED ONLY IF UNEXPECTED HAZARDOUS WEATHER DEVELOPS OR IF EXPECTED HAZARDOUS WEATHER NO LONGER IS FORECAST TO DEVELOP.
The office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 20, 8:57 PM CDT | Severe Thunderstorm Warning | EWX | Val Verde | 63 min |
| Jun 21, 1:51 AM CDT | Flash Flood Warning | EWX | Kerr | 3 hr |
| Jun 21, 6:01 AM CDT | Flash Flood Warning | EWX | Frio | 3 hr |
| Jun 21, 7:30 AM CDT | Flash Flood Warning | EWX | Atascosa | 3 hr |
| Jun 21, 7:45 AM CDT | Flash Flood Warning | EWX | Bexar | 3 hr |
| Jun 21, 9:01 AM CDT | Flash Flood Warning | EWX | Frio | 119 min |
| Jun 21, 9:33 AM CDT | Flash Flood Warning | EWX | Gonzales, Guadalupe, Wilson | 3 hr |
| Jun 21, 10:25 AM CDT | Flash Flood Warning | EWX | DeWitt, Karnes | 3 hr |
| Jun 21, 10:39 AM CDT | Flash Flood Warning | EWX | Bandera, Medina | 3 hr |
| Jun 21, 10:59 AM CDT | Flash Flood Warning | EWX | Caldwell | 3 hr |
| Jun 21, 11:16 AM CDT | Flash Flood Warning | EWX | Bastrop, Fayette, Lavaca | 3 hr |
| Jun 21, 11:16 AM CDT | Flash Flood Warning | EWX | Blanco, Comal, Hays, Travis | 3 hr |
| Jun 21, 11:16 AM CDT | Flash Flood Warning | EWX | Kendall | 3 hr |
| Jun 21, 11:38 AM CDT | Flash Flood Warning | EWX | Bandera, Bexar | 3 hr |
| Jun 21, 12:08 PM CDT | Flash Flood Warning | EWX | Lee, Williamson | 3 hr |
| Jun 21, 1:25 PM CDT | Flash Flood Warning | EWX | Guadalupe | 3 hr |
| Jun 21, 1:25 PM CDT | Flash Flood Warning | EWX | Gillespie | 3 hr |
| Jun 21, 1:25 PM CDT | Flash Flood Warning | EWX | DeWitt | 3 hr |
| Jun 21, 1:25 PM CDT | Flash Flood Warning | EWX | Bandera | 3 hr |
| Jun 21, 2:07 PM CDT | Flash Flood Warning | EWX | Kendall, Kerr | 3 hr |
| Jun 21, 2:07 PM CDT | Flash Flood Warning | EWX | Lavaca | 3 hr |
| Jun 21, 3:20 PM CDT | Flash Flood Warning | EWX | Bexar, Medina | 3 hr |
| Jun 21, 3:20 PM CDT | Flash Flood Warning | EWX | Comal | 3 hr |
| Jun 21, 3:36 PM CDT | Flash Flood Warning | EWX | Karnes | 3 hr |
| Jun 21, 4:39 PM CDT | Flash Flood Warning | EWX | Guadalupe | 6 hr |
| Jun 21, 4:39 PM CDT | Flash Flood Warning | EWX | Bandera | 6 hr |
| Jun 21, 4:39 PM CDT | Flash Flood Warning | EWX | DeWitt | 6 hr |
| Jun 21, 5:09 PM CDT | Flash Flood Warning | EWX | Caldwell, Travis | 6 hr |
| Jun 21, 5:17 PM CDT | Flash Flood Warning | EWX | Bandera | 6 hr |
| Jun 21, 5:17 PM CDT | Flash Flood Warning | EWX | Lavaca | 6 hr |
| Jun 21, 5:42 PM CDT | Flash Flood Warning | EWX | Hays | 6 hr |
| Jun 21, 6:16 PM CDT | Flash Flood Warning | EWX | Bexar, Comal | 3 hr |
Nearby
Severe Thunderstorm Warnings in Texas, 1997Every severe thunderstorm warning in 1997
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.