Alert archive / Texas / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 32, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this severe thunderstorm warning at Apr 4, 1997, 4:34 PM CST for Medina County, Texas. It was in force for 56 min. 2 reports came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Apr 4, 1997, 4:34 PM CST (22:34 UTC)
- Expired
- Apr 4, 1997, 5:30 PM CST
- In force
- 56 min
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Whole counties
County Medina County, TX
The radar
The Austin/San Antonio radar (KEWX), 112 km from the middle of the area, began a volume at 22:35 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 |
|---|---|---|---|
| Apr 4, 5:00 PM CST | Hail 0.75 | Hondo, TX | |
| Apr 4, 5:05 PM CST | Thunderstorm Wind | Hondo, 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Apr 4, 3:00 PM CST | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Del Rio, TX (KDRT), launched 12:00Z, 10.6 hours before the alert went out and 168 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
- 1922 J/kg
- Mixed-layer CIN
- -20 J/kg
- Mixed-layer LCL
- 580 m above ground
- 0-6 km bulk shear
- 55 kt
- 0-1 km storm-relative helicity
- 213 m²/s²
- 0-3 km storm-relative helicity
- 198 m²/s²
- Significant tornado parameter
- 2.5
- Supercell composite
- 10.1
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KSAT 042236 RRA SVRSAT TXC325-042330- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 434 PM CST FRI APR 4 1997 THE NATIONAL WEATHER SERVICE IN AUSTIN/SAN ANTONIO HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 530 PM CST FOR PEOPLE IN THE FOLLOWING LOCATION... IN SOUTH CENTRAL TEXAS ...MEDINA COUNTY AT 435 PM NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A POSSIBLE SEVERE THUNDERSTORM OVER WESTERN MEDINA COUNTY NEAR D'HANIS MOVING TO THE EAST AT 20 MPH. RADAR ESTIMATED 1 INCH HAIL FROM THIS STORM AS WELL AS GUSTY THUNDERSTORM WINDS. THIS STORM WILL BE IN THE HONDO AREA BY 445 PM. 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. IF YOU SEE SEVERE WEATHER TAKING PLACE...CALL YOUR REPORT TO THE NEAREST LAW ENFORCEMENT AGENCY FOR IMMEDIATE RELAY TO THE NATIONAL WEATHER SERVICE.
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, Apr 4, 10:49 AM CST, 5 hours 45 minutes before
TXZ171>173-183>194-202>209-217>225-228-051200- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 11 AM CST FRI APR 4 1997 ...STORMY EARLY APRIL DAY OVER THE HILL COUNTRY AND SOUTH CENTRAL TEXAS... AN INTENSE SPRING WEATHER SYSTME TO THE WEST OF THE AREA WILL MOVE EAST CAUSING MORE DEVELOPMENT OF SHOWERS AND THUNDERSTORMS TODAY AND THIS EVENING. ADDITIONAL RAINFALL AMOUNTS OF 2 TO 3 INCHES IN SOME AREAS IS POSSIBLE BY THE TIME THE EVENT ENDS THIS EVENING. SEVERE THUNDERSTORMS MAY ALSO DEVELOP OVER THE HILL COUNTRY AND SOUTH CENTRAL TEXAS TODAY AND THIS EVENING...CAUSING STRONG WINDS AND POSSIBLE DAMAGING HAIL. AS THE WEATHER SYSTEMS SWEEPS EAST OF THE AREA...A MOSTLY SUNNY DAY IS EXPECTED SATURDAY...FOLLOWED BY A SUNNY TO PARTLY CLOUDY ON SUNDAY.
Special weather statement, Apr 4, 11:00 AM CST, 5 hours 34 minutes before
TXZ171>173-183>194-202>209-217>225-228-051200- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 11 AM CST FRI APR 4 1997 ...STORMY EARLY APRIL DAY OVER THE HILL COUNTRY AND SOUTH CENTRAL TEXAS... AN INTENSE SPRING WEATHER SYSTME TO THE WEST OF THE AREA WILL MOVE EAST CAUSING MORE DEVELOPMENT OF SHOWERS AND THUNDERSTORMS TODAY AND THIS EVENING. ADDITIONAL RAINFALL AMOUNTS OF 2 TO 3 INCHES IN SOME AREAS IS POSSIBLE BY THE TIME THE EVENT ENDS THIS EVENING. SEVERE THUNDERSTORMS MAY ALSO DEVELOP OVER THE HILL COUNTRY AND SOUTH CENTRAL TEXAS TODAY AND THIS EVENING...CAUSING STRONG WINDS AND POSSIBLE DAMAGING HAIL. AS THE WEATHER SYSTEMS SWEEPS EAST OF THE AREA...A MOSTLY SUNNY DAY IS EXPECTED SATURDAY...FOLLOWED BY A SUNNY TO PARTLY CLOUDY ON SUNDAY.
Special weather statement, Apr 4, 11:47 AM CST, 4 hours 47 minutes before
TXZ171>173-183>194-202>209-217>225-228-051200- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 1147 AM CST FRI APR 4 1997 ...STORMY EARLY APRIL AFTERNOON OVER THE HILL COUNTRY AND SOUTH CENTRAL TEXAS... AN INTENSE SPRING WEATHER SYSTEM TO THE WEST OF THE AREA WILL MOVE EAST CAUSING MORE DEVELOPMENT OF SHOWERS AND THUNDERSTORMS THIS AFTERNOON AND THIS EVENING. AT 1147 AM...STORMS ARE RAPIDLY FORMING WEST AND NORTHWEST OF DEL RIO...BEGINNING TO DEVELOP A LINE OF SHOWERS AND THUNDERSTORMS...WHICH WILL MOVE EAST AND AFFECT SOUTH CENTRAL TEXAS AND THE HILL COUNTRY THIS AFTERNOON. A SEVERE THUNDERSTORM WARNING IS IN EFFECT FOR VAL VERDE COUNTY TIL 1230 PM. SEVERE THUNDERSTORMS ARE POSSIBLE WITH THIS EARLY APRIL WEATHER SYSTEM...CAUSING DAMAGING WINDS AND HAIL. ADDITIONAL RAINFALL AMOUNTS OF 2 TO 3 INCHES IN SOME AREAS IS POSSIBLE BY THE TIME THE EVENT ENDS THIS EVENING. AS THE WEATHER SYSTEMS SWEEPS EAST OF THE AREA...A MOSTLY SUNNY DAY IS EXPECTED SATURDAY...FOLLOWED BY A SUNNY TO PARTLY CLOUDY ON SUNDAY.
Special weather statement, Apr 4, 11:51 AM CST, 4 hours 43 minutes before
TXZ171>173-183>194-202>209-217>225-228-051200- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 1147 AM CST FRI APR 4 1997 ...STORMY EARLY APRIL AFTERNOON OVER THE HILL COUNTRY AND SOUTH CENTRAL TEXAS... AN INTENSE SPRING WEATHER SYSTEM TO THE WEST OF THE AREA WILL MOVE EAST CAUSING MORE DEVELOPMENT OF SHOWERS AND THUNDERSTORMS THIS AFTERNOON AND THIS EVENING. AT 1147 AM...STORMS ARE RAPIDLY FORMING WEST AND NORTHWEST OF DEL RIO...BEGINNING TO DEVELOP A LINE OF SHOWERS AND THUNDERSTORMS...WHICH WILL MOVE EAST AND AFFECT SOUTH CENTRAL TEXAS AND THE HILL COUNTRY THIS AFTERNOON. A SEVERE THUNDERSTORM WARNING IS IN EFFECT FOR VAL VERDE COUNTY TIL 1230 PM. SEVERE THUNDERSTORMS ARE POSSIBLE WITH THIS EARLY APRIL WEATHER SYSTEM...CAUSING DAMAGING WINDS AND HAIL. ADDITIONAL RAINFALL AMOUNTS OF 2 TO 3 INCHES IN SOME AREAS IS POSSIBLE BY THE TIME THE EVENT ENDS THIS EVENING. AS THE WEATHER SYSTEMS SWEEPS EAS~T OF THE AREA...A MOSTLY SUNNY DAY IS EXPECTED SATURDAY...FOLLOWED BY A SUNNY TO PARTLY CLOUDY ON SUNDAY.
The office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 3, 8:33 PM CST | Flash Flood Warning | EWX | Dimmit | 42 min |
| Apr 3, 8:33 PM CST | Severe Thunderstorm Warning | EWX | Dimmit | 42 min |
| Apr 3, 9:18 PM CST | Severe Thunderstorm Warning | EWX | Medina, Zavala | 57 min |
| Apr 3, 10:36 PM CST | Flash Flood Warning | EWX | Gillespie | 69 min |
| Apr 3, 10:47 PM CST | Flash Flood Warning | EWX | Kerr | 58 min |
| Apr 3, 11:10 PM CST | Severe Thunderstorm Warning | EWX | Bexar | 65 min |
| Apr 3, 11:32 PM CST | Severe Thunderstorm Warning | EWX | Comal | 58 min |
| Apr 3, 11:55 PM CST | Severe Thunderstorm Warning | EWX | Hays | 65 min |
| Apr 4, 12:25 AM CST | Flash Flood Warning | EWX | Williamson | 65 min |
| Apr 4, 12:25 AM CST | Severe Thunderstorm Warning | EWX | Williamson | 65 min |
| Apr 4, 12:43 AM CST | Severe Thunderstorm Warning | EWX | Hays | 62 min |
| Apr 4, 1:17 AM CST | Flash Flood Warning | EWX | DeWitt, Lavaca | 3 hr |
| Apr 4, 1:34 AM CST | Flash Flood Warning | EWX | Travis, Williamson | 116 min |
| Apr 4, 5:36 AM CST | Flash Flood Warning | EWX | Lavaca | 3 hr |
| Apr 4, 6:23 AM CST | Flash Flood Warning | EWX | Travis, Williamson | 3 hr |
| Apr 4, 6:31 AM CST | Flash Flood Warning | EWX | Blanco | 3 hr |
| Apr 4, 6:43 AM CST | Flash Flood Warning | EWX | Kendall | 3 hr |
| Apr 4, 9:24 AM CST | Flash Flood Warning | EWX | Travis, Williamson | 3 hr |
| Apr 4, 10:12 AM CST | Flash Flood Warning | EWX | DeWitt | 2 hr |
| Apr 4, 11:30 AM CST | Severe Thunderstorm Warning | EWX | Val Verde | 60 min |
| Apr 4, 2:34 PM CST | Severe Thunderstorm Warning | EWX | Uvalde | 56 min |
| Apr 4, 2:40 PM CST | Severe Thunderstorm Warning | EWX | Real | 65 min |
| Apr 4, 3:00 PM CST | Flash Flood Warning | EWX | Real | 2 hr |
| Apr 4, 3:25 PM CST | Flash Flood Warning | EWX | Bandera | 65 min |
| Apr 4, 3:25 PM CST | Severe Thunderstorm Warning | EWX | Bandera | 65 min |
| Apr 4, 3:32 PM CST | Flash Flood Warning | EWX | Uvalde | 58 min |
| Apr 4, 3:32 PM CST | Severe Thunderstorm Warning | EWX | Uvalde | 58 min |
| Apr 4, 3:53 PM CST | Flash Flood Warning | EWX | Kerr | 2 hr |
| Apr 4, 4:24 PM CST | Flash Flood Warning | EWX | Bandera | 2 hr |
| Apr 4, 5:11 PM CST | Severe Thunderstorm Warning | EWX | Bexar, Kendall | 79 min |
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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.