Alert archive / Texas / Flash Flood Warnings in 1993
Flash Flood Warning 1, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this flash flood warning at May 5, 1993, 5:15 AM CDT for Zavala County, Texas. It was in force for 90 min.
The area
The counties it named.
The facts
- Issued
- May 5, 1993, 5:15 AM CDT (10:15 UTC)
- Expired
- May 5, 1993, 6:45 AM CDT
- In force
- 90 min
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Whole counties
County Zavala County, TX
The nearest sounding before it
Del Rio, TX (KDRT), launched 00:00Z, 10.3 hours before the alert went out and 119 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
- 2610 J/kg
- Mixed-layer CIN
- -49 J/kg
- Mixed-layer LCL
- 1552 m above ground
- 0-6 km bulk shear
- 21 kt
- 0-1 km storm-relative helicity
- 55 m²/s²
- 0-3 km storm-relative helicity
- 162 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 5.6
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KSAT 051015 FFWSAT TXC507-051215- BULLETIN - EBS ACTIVATION REQUESTED SEVERE THUNDERSTORM AND FLASH FLOOD WARNING NATIONAL WEATHER SERVICE SAN ANTONIO TX 515 AM CDT WED MAY 5 1993 THE NATIONAL WEATHER SERVICE IN SAN ANTONIO HAS ISSUED A SEVERE THUNDERSTORM AND FLASH FLOOD WARNING EFFECTIVE UNTIL 715 AM CDT FOR PEOPLE IN THE FOLLOWING COUNTIES... IN SOUTH TEXAS ...ZAVALA COUNTY NATIONAL WEATHER SERVICE RADAR INDICATED A SEVERE THUNDERSTORM OVER CENTRAL ZAVALA COUNTY...ABOUT 10 MILES NORTH OF CRYSTAL CITY. THIS STORM APPEARED TO BE LOCATED ALONG THE NUECES RIVER...BUT WAS NOT MOVING. A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT. IT IS IMPORTANT TO KNOW WHERE YOU ARE RELATIVE TO STREAMS...RIVERS...OR CREEKS WHICH CAN BECOME KILLERS IN HEAVY RAINS. CAMPERS AND OTHER PEOPLE IN RECREATION AREAS ALONG CREEKS...STREAMS...AND RIVERS IN THE WARNING AREA SHOULD MOVE TO HIGH GROUND IMMEDIATELY.
What forecasters said that day
The local office's own words before this flash flood 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, May 5, 3:25 AM CDT, 1 hour 50 minutes before
TXZ038-039-041-051000- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SAN ANTONIO TX 325 AM CDT WED MAY 5 1993 AT 325 AM CDT...NATIONAL WEATHER SERVICE RADAR CONTINUED TO INDICATE SHOWERS AND THUNDERSTORMS...SOME WITH VERY HEAVY RAIN...FROM SOUTHEAST OF COTULLA NORTH TO HONDO AND THE ROCKSPRINGS AREA. THE STRONGEST STORM WAS LOCATED JUST TO THE SOUTHEAST OF HONDO. THESE SHOWERS AND THUNDERSTORMS CONTINUE TO MOVE TOWARD THE NORTHEAST AT 20 TO 25 MPH. THERE HAVE BEEN NO REPORTS OF SEVERE WEATHER...BUT AS THESE STORMS PASSED THROUGH ZAVALA AND UVALDE COUNTIES SMALL HAIL...HEAVY RAINS...AND GUSTY WINDS WERE REPORTED. IF THESE SHOWERS AND THUNDERSTORMS CONTINUE THEIR PRESENT MOVEMENT THEY COULD REACH THE SAN ANTONIO AREA BETWEEN 5 AND 6 AM. THE NATIONAL WEATHER SERVICE WILL CONTINUE TO MONITOR THESE SHOWERS AND THUNDERSTORMS AND KEEP YOU INFORMED OF CHANGING CONDITIONS. STAY TUNED TO NOAA WEATHER RADIO FOR ADDITIONAL STATEMENTS.
Special weather statement, May 5, 3:27 AM CDT, 1 hour 48 minutes before
TXZ038-039-041-051000- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SAN ANTONIO TX 325 AM CDT WED MAY 5 1993 AT 325 AM CDT...NATIONAL WEATHER SERVICE RADAR CONTINUED TO INDICATE SHOWERS AND THUNDERSTORMS...SOME WITH VERY HEAVY RAIN...FROM SOUTHEAST OF COTULLA NORTH TO HONDO AND THE ROCKSPRINGS AREA. THE STRONGEST STORM WAS LOCATED JUST TO THE SOUTHEAST OF HONDO. THESE SHOWERS AND THUNDERSTORMS CONTINUE TO MOVE TOWARD THE NORTHEAST AT 20 TO 25 MPH. THERE HAVE BEEN NO REPORTS OF SEVERE WEATHER...BUT AS THESE STORMS PASSED THROUGH ZAVALA AND UVALDE COUNTIES SMALL HAIL...HEAVY RAINS...AND GUSTY WINDS WERE REPORTED. IF THESE SHOWERS AND THUNDERSTORMS CONTINUE THEIR PRESENT MOVEMENT THEY COULD REACH THE SAN ANTONIO AREA BETWEEN 5 AND 6 AM. THE NATIONAL WEATHER SERVICE WILL CONTINUE TO MONITOR THESE SHOWERS AND THUNDERSTORMS AND KEEP YOU INFORMED OF CHANGING CONDITIONS. STAY TUNED TO NOAA WEATHER RADIO FOR ADDITIONAL STATEMENTS.
Special weather statement, May 5, 4:18 AM CDT, 57 minutes before
TXZ039-041-051000- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SAN ANTONIO TX 420 AM CDT WED MAY 5 1993 AT 420 AM CDT...A LINE OF STRONG THUNDERSTORMS STRETCHED FROM WESTERN BEXAR COUNTY SOUTHWARD ACROSS ATASCOSA COUNTY INTO MCMULLEN COUNTY. THE LINE WAS MOVING TO THE EAST AND NORTHEAST AT 25 MILES AN HOUR. WITHIN THE PAST FEW MINUTES...ONE OF THE STORMS WITHIN THE LINE HAD BECOME QUITE STRONG. THIS STORM WAS LOCATED IN SOUTHWEST BEXAR COUNTY... JUST TO THE SOUTHWEST OF THE SAN ANTONIO METROPOLITAN AREA. IT IS LIKELY THAT THIS STORM WILL PRODUCE...IN ADDITION TO HEAVY RAINFALL AND FREQUENT LIGHTNING...GUSTY WIND AND SOME HAIL. WITH THE AIR MASS OVER THE AREA VERY UNSTABLE...IT IS CERTAINLY POSSIBLE THAT THE STORM COULD BECOME BRIEFLY SEVERE AND DROP LARGE HAIL. RESIDENTS OF SAN ANTONIO SHOULD SEE THIS LINE OF STORMS MOVE ACROSS THE CITY WITHIN THE HOUR. THESE THUNDERSTORMS HAVE HAD A HISTORY OF PRODUCING HEAVY RAINFALL...ALTHOUGH THEIR FAST MOVEMENT WILL LIMIT THEIR POTENTIAL FOR PRODUCING FLOODING. THE NATIONAL WEATHER SERVICE WILL MONITOR CONDITIONS CLOSELY FOR THE NEXT HOUR OR SO. STAY TUNED TO NOAA WEATHER RADIO FOR ADDITIONAL STATEMENTS OR POSSIBLE WARN\INGS.
Special weather statement, May 5, 4:20 AM CDT, 55 minutes before
TXZ039-041-051000- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SAN ANTONIO TX 420 AM CDT WED MAY 5 1993 AT 420 AM CDT...A LINE OF STRONG THUNDERSTORMS STRETCHED FROM WESTERN BEXAR COUNTY SOUTHWARD ACROSS ATASCOSA COUNTY INTO MCMULLEN COUNTY. THE LINE WAS MOVING TO THE EAST AND NORTHEAST AT 25 MILES AN HOUR. WITHIN THE PAST FEW MINUTES...ONE OF THE STORMS WITHIN THE LINE HAD BECOME QUITE STRONG. THIS STORM WAS LOCATED IN SOUTHWEST BEXAR COUNTY... JUST TO THE SOUTHWEST OF THE SAN ANTONIO METROPOLITAN AREA. IT IS LIKELY THAT THIS STORM WILL PRODUCE...IN ADDITION TO HEAVY RAINFALL AND FREQUENT LIGHTNING...GUSTY WIND AND SOME HAIL. WITH THE AIR MASS OVER THE AREA VERY UNSTABLE...IT IS CERTAINLY POSSIBLE THAT THE STORM COULD BECOME BRIEFLY SEVERE AND DROP LARGE HAIL. RESIDENTS OF SAN ANTONIO SHOULD SEE THIS LINE OF STORMS MOVE ACROSS THE CITY WITHIN THE HOUR. THESE THUNDERSTORMS HAVE HAD A HISTORY OF PRODUCING HEAVY RAINFALL...ALTHOUGH THEIR FAST MOVEMENT WILL LIMIT THEIR POTENTIAL FOR PRODUCING FLOODING. THE NATIONAL WEATHER SERVICE WILL MONITOR CONDITIONS CLOSELY FOR THE NEXT HOUR OR SO. STAY TUNED TO NOAA WEATHER RADIO FOR ADDITIONAL STATEMENTS OR POSSIBLE WARNINGS.
Special weather statement, May 5, 4:55 AM CDT, 20 minutes before
TXZ039-040-051100- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SAN ANTONIO TX 455 AM CDT WED MAY 5 1993 AT 455 AM CDT...A LINE OF STRONG THUNDERSTORMS EXTENDED FROM WESTERN COMAL COUNTY SOUTHWARD ACROSS GUADALUPE AND WILSON COUNTIES. THIS LINE WAS MOVING TO THE EAST AT 30 MILES AN HOUR. AS THE LINE OF STORMS MOVED ACROSS BEXAR AND ATASCOSA COUNTIES...BRIEF HEAVY RAINFALL...FREQUENT VIVID LIGHTNING AND GUSTY WIND WAS REPORTED. AT THE NATIONAL WEATHER SERVICE OFFICE IN SAN ANTONIO...ABOUT A QUARTER OF AN INCH OF RAIN HAD FALLEN AND WIND HAD GUSTED TO 30 MILES AN HOUR. THE LINE OF THUNDERSTORMS HAS OVER THE PAST HALF HOUR EVOLVED INTO A STRUCTURE THAT HAS CHARACTERISTICALLY BEEN ASSOCIATED WITH THE PRODUCTION OF HIGH WIND. THIS THREAT IS ENHANCED BY THE FAST EASTWARD MOVEMENT OF THE LINE. RESIDENTS OF COMAL...GUADALUPE...WILSON...GONZALES AND KARNES COUNTIES SHOULD REMAIN ALERT TO RAPIDLY CHANGING WEATHER CONDITIONS OVER THE NEXT HOUR OR SO. THE NATIONAL WEATHER SERVICE WILL ISSUE PERIODIC STATEMENTS OR POSSIBLE WARNINGS TO KEEP YOU UPDATED AS TO THEIR PROGRESS. THESE WILL BE BROADCAST OVER NOAA WEATHER RADIO.
Special weather statement, May 5, 4:55 AM CDT, 20 minutes before
TXZ039-040-051100- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SAN ANTONIO TX 455 AM CDT WED MAY 5 1993 AT 455 AM CDT...A LINE OF STRONG THUNDERSTORMS EXTENDED FROM WESTERN COMAL COUNTY SOUTHWARD ACROSS GUADALUPE AND WILSON COUNTIES. THIS LINE WAS MOVING TO THE EAST AT 30 MILES AN HOUR. AS THE LINE OF STORMS MOVED ACROSS BEXAR AND ATASCOSA COUNTIES...BRIEF HEAVY RAINFALL...FREQUENT VIVID LIGHTNING AND GUSTY WIND WAS REPORTED. AT THE NATIONAL WEATHER SERVICE OFFICE IN SAN ANTONIO...ABOUT A QUARTER OF AN INCH OF RAIN HAD FALLEN AND WIND HAD GUSTED TO 30 MILES AN HOUR. THE LINE OF THUNDERSTORMS HAS OVER THE PAST HALF HOUR EVOLVED INTO A STRUCTURE THAT HAS CHARACTERISTICALLY BEEN ASSOCIATED WITH THE PRODUCTION OF HIGH WIND. THIS THREAT IS ENHANCED BY THE FAST EASTWARD MOVEMENT OF THE LINE. RESIDENTS OF COMAL...GUADALUPE...WILSON...GONZALES AND KARNES COUNTIES SHOULD REMAIN ALERT TO RAPIDLY CHANGING WEATHER CONDITIONS OVER THE NEXT HOUR OR SO. THE NATIONAL WEATHER SERVICE WILL ISSUE PERIODIC STATEMENTS OR POSSIBLE WARNINGS TO KEEP YOU UPDATED AS TO THEIR PROGRESS. THESE WILL BE BROADCAST OVER NOAA WEATHER RADIO.
The office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 5, 5:15 AM CDT | Severe Thunderstorm Warning | EWX | Zavala | 90 min |
| May 5, 7:02 AM CDT | Severe Thunderstorm Warning | EWX | Jackson | 58 min |
| May 5, 11:24 AM CDT | Flash Flood Warning | EWX | Bastrop | 3 hr |
| May 5, 11:46 AM CDT | Flash Flood Warning | EWX | Bexar, Comal, Guadalupe | 3 hr |
| May 5, 1:04 PM CDT | Severe Thunderstorm Warning | EWX | Bandera | 56 min |
| May 5, 2:11 PM CDT | Severe Thunderstorm Warning | EWX | Bexar | 34 min |
| May 5, 2:25 PM CDT | Flash Flood Warning | EWX | Comal | 4 hr |
| May 5, 2:30 PM CDT | Severe Thunderstorm Warning | EWX | Bandera, Uvalde | 60 min |
| May 5, 3:19 PM CDT | Flash Flood Warning | EWX | Bandera, Medina | 3 hr |
| May 5, 3:27 PM CDT | Severe Thunderstorm Warning | EWX | Victoria | 63 min |
| May 5, 4:16 PM CDT | Severe Thunderstorm Warning | EWX | Bexar | 59 min |
| May 5, 4:37 PM CDT | Severe Thunderstorm Warning | EWX | Victoria | 68 min |
| May 5, 5:52 PM CDT | Flash Flood Warning | EWX | Victoria | 2 hr |
| May 5, 6:08 PM CDT | Severe Thunderstorm Warning | EWX | La Salle | 67 min |
Nearby
Flash Flood Warnings in Texas, 1993Every flash flood warning in 1993
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.