Alert archive / Texas / Severe Thunderstorm Warnings in 2001
Severe Thunderstorm Warning 53, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this severe thunderstorm warning at May 4, 2001, 2:43 PM CDT for Val Verde County, Texas. It was in force for 62 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
- May 4, 2001, 2:43 PM CDT (19:43 UTC)
- Expired
- May 4, 2001, 3:45 PM CDT
- In force
- 62 min
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
County Val Verde County, TX
The radar
The Laughlin AFB radar (KDFX), 108 km from the middle of the area, began a volume at 19:44 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 12:00Z, 7.7 hours before the alert went out and 70 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
- 947 J/kg
- Mixed-layer CIN
- 0 J/kg
- Mixed-layer LCL
- 590 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- 232 m²/s²
- 0-3 km storm-relative helicity
- 318 m²/s²
- Significant tornado parameter
- 1.3
- Supercell composite
- 11.5
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS54 KEWX 041943 SVRSAT TXC465-042045- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 243 PM CDT FRI MAY 4 2001 THE NATIONAL WEATHER SERVICE HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR THE FOLLOWING COUNTIES IN TEXAS... VAL VERDE * UNTIL 345 PM CDT * AT 240 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 25 MILES WEST OF LOMA ALTA...OR ABOUT 10 MILES NORTH OF COMSTOCK...MOVING NORTHEAST AT 25 MPH. * THE SEVERE THUNDERSTORM WILL CROSS HIGHWAY 163 ABOUT 10 MILES NORTH OF COMSTOCK IN THE NEXT 5 MINUTES. VERY LARGE HAIL IS POSSIBLE WITH THIS SEVERE THUNDERSTORM. IF YOU ARE IN THE PATH OF THE STORM...PUT YOUR CAR IN A GARAGE AND MOVE TO A SUBSTANTIAL SHELTER. LAT...LON 2986 10131 2969 10127 2991 10074 3024 10073 3025 10097
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 4, 11:00 AM CDT, 3 hours 43 minutes earlier.
Area forecast discussion, May 4, 11:00 AM CDT, 3 hours 43 minutes before
SOUTH CENTRAL TEXAS FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
11 AM CDT FRI MAY 4 2001
NO BOUNDARIES INDICATED ON SURFACE ANALYSES FOR SOUTH CENTRAL TEXAS,
BUT MSAS MOISTURE CONVERGENCE CONTINUES TO FOCUS OVER THE WATCH AREA
WHILE RADARS ARE INDICATED MORE ORGANIZED CONVECTION FLARING UP OUT
WEST FROM FORT STOCKTON TO BIG SPRINGS. EXPECT CONTINUED LIGHT
SHOWERS AND ISOLATED THUNDERSTORMS IN THE FIRST PERIOD MAINLY WEST
OF THE I-35 CORRIDOR. AM RELUCTANT TO TAMPER WITH AFTERNOON RAIN
CHANCES OVER EASTERN SECTIONS WHERE LITTLE OR NO RAINFALL OCCURRING
SINCE CONVECTIVE TEMPERATURES IN THE LOW TO MID 80S WILL LIKELY BE
REACHED. THUS ONLY REASON TO UPDATE IS TO REFLECT THE EFFECTS OF
CLOUD COVER TRENDS ON TEMPERATURES.
.EWX...FLASH FLOOD WATCH THROUGH TONIGHT FOR THE TEXAS HILL COUNTRY
AND WESTERN SOUTH CENTRAL TEXAS.
18In the hours before
Special weather statement, May 4, 1:45 PM CDT, 58 minutes before
TXZ171-172-183>190-202>204-050200- HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 145 PM CDT FRI MAY 4 2001 ...SEVERE THUNDERSTORMS POSSIBLE IN THE HILL COUNTRY THIS AFTERNOON AND TONIGHT... A DEVELOPING LINE OF THUNDERSTORMS IS MOVING ACROSS VAL VERDE COUNTY. THIS LINE IS EXPECTED TO CONTINUE MOVING TOWARD THE EAST AT 20 MPH THIS AFTERNOON AND INCREASE IN AREAL COVERAGE AND INTENSITY. SOME OF THE STORMS COULD APPROACH SEVERE LIMITS...WHICH MEANS THAT LARGE HAIL...GUSTY DAMAGING WINDS...FREQUENT DEADLY LIGHTNING AND LOCALLY HEAVY RAINFALL WHICH COULD PRODUCE FLASH FLOODING MAY OCCUR. THE AREA WITH THE GREATEST RISK OF SEVERE THUNDERSTORMS IS THAT PORTION OF THE TEXAS HILL COUNTRY WEST OF INTERSTATE 35 BETWEEN SAN ANTONIO AND GEORGETOWN...AND ALONG AND NORTH OF U.S. HIGHWAY 90 BETWEEN SAN ANTONIO AND DEL RIO. THIS OUTLOOK APPLIES TO THE FOLLOWING SPECIFIC COUNTIES... GILLESPIE...MEDINA...KENDALL...REAL...BLANCO...KERR...BURNET... BANDERA...LLANO...EDWARDS...KINNEY...UVALDE AND VAL VERDE. ABUNDANT LOW-LEVEL MOISTURE OVER SOUTH TEXAS...COMBINED WITH AN APPROACHING UPPER-LEVEL DISTURBANCE FROM MEXICO...WILL PRODUCE WIDESPREAD SHOWER AND THUNDERSTORM ACTIVITY THIS AFTERNOON AND TONIGHT. SOME OF THE STORMS COULD BE SEVERE. IN ADDITION...A FLASH FLOOD WATCH IS IN EFFECT FOR MUCH OF THE HILL COUNTRY AND ADJACENT SECTIONS OF THE EDWARDS PLATEAU THROUGH TONIGHT. SPOTTER NETWORKS MAY NEED TO BE ACTIVATED AS THE THUNDERSTORMS MOVE INTO THE THREATENED AREA. FOR INFORMATION ON WEATHER THREATS IN SURROUNDING AREAS...REFER TO OUTLOOKS FROM OFFICES IN MIDLAND...SAN ANGELO...FORT WORTH... HOUSTON/GALVESTON AND CORPUS CHRISTI.
The office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 4, 1:42 PM CDT | Severe Thunderstorm Warning | EWX | Val Verde | 63 min |
| May 4, 1:45 PM CDT | Flash Flood Warning | EWX | Val Verde | 2 hr |
| May 4, 3:45 PM CDT | Severe Thunderstorm Warning | EWX | Val Verde | 60 min |
| May 4, 3:56 PM CDT | Tornado Warning | EWX | Val Verde | 34 min |
| May 4, 4:00 PM CDT | Flash Flood Warning | EWX | Val Verde | 2 hr |
| May 4, 5:30 PM CDT | Flash Flood Warning | EWX | Edwards | 3 hr |
| May 4, 5:55 PM CDT | Flash Flood Warning | EWX | Val Verde | 2 hr |
| May 4, 5:58 PM CDT | Severe Thunderstorm Warning | EWX | Kinney, Val Verde | 62 min |
| May 4, 6:41 PM CDT | Tornado Warning | EWX | Kinney | 64 min |
| May 4, 6:42 PM CDT | Flash Flood Warning | EWX | Kinney | 2 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.