Alert archive / Texas / Severe Thunderstorm Warnings in 1999
Severe Thunderstorm Warning 64, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this severe thunderstorm warning at Apr 25, 1999, 11:11 AM CDT for Bandera County, Uvalde County, Texas. It was in force for 49 min. 1 report 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 25, 1999, 11:11 AM CDT (16:11 UTC)
- Expired
- Apr 25, 1999, 12:00 PM CDT
- In force
- 49 min
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Whole counties
Counties Bandera County, TX, Uvalde County, TX
The radar
The Laughlin AFB radar (KDFX), 81 km from the middle of the area, began a volume at 16:16 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 25, 11:30 AM CDT | Thunderstorm Wind | Utopia, TX | A trained spotter reported trees blown down and large limbs were knocked off trees. |
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 nearest sounding before it
Del Rio, TX (KDRT), launched 12:00Z, 4.2 hours before the alert went out and 131 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
- 1820 J/kg
- Mixed-layer CIN
- -72 J/kg
- Mixed-layer LCL
- 528 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- 118 m²/s²
- 0-3 km storm-relative helicity
- 282 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 14.5
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KSAT 251610 RRA SVRSAT TXC019-463-251700- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 1111 AM CDT SUN APR 25 1999 THE NATIONAL WEATHER SERVICE IN AUSTIN/SAN ANTONIO HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... BANDERA COUNTY IN TEXAS UVALDE COUNTY IN TEXAS * UNTIL NOON CDT * AT 1110 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM NEAR CONCAN... MOVING NORTHEAST AT 50 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... UTOPIA AT 1120 AM CDT VANDERPOOL AT 1130 AM CDT MEDINA AT 1140 AM CDT DAMAGING WINDS AND HEAVY RAIN ARE LIKELY. GO INSIDE A STURDY BUILDING AND STAY AWAY FROM WINDOWS! F PASHOS
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 25, 6:00 AM CDT, 5 hours 11 minutes before
TXZ171>173-183>194-202>209-217>225-228-260000- HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 600 AM CDT SUN APR 25 1999 A FEW LINGERING THUNDERSTORMS MOVING ACROSS SOUTH CENTRAL TEXAS THIS MORNING WILL PRODUCE A SLIGHT RISK OF SEVERE WEATHER...MAINLY IN THE FORM OF HIGH WINDS. THIS AFTERNOON...THE ADDED MOISTURE OF THIS MORNINGS RAIN WILL COUPLE WITH AN UNSTABLE AIRMASS TO PRODUCE ADDITIONAL SCATTERED SHOWERS AND THUNDERSTORMS THIS AFTERNOON INTO THIS EVENING. AGAIN THE RISK OF SEVERE THUNDERSTORMS WILL BE SLIGHT AND MAINLY FROM HIGH WINDS. 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. FOR INFORMATION ON WEATHER THREATS IN AREAS SURROUNDING SOUTH CENTRAL TEXAS...PLEASE REFER TO THE HAZARDOUS WEATHER OUTLOOKS FROM NWS OFFICES IN MIDLAND...SAN ANGELO...FORT WORTH...HOUSTON/GALVESTON AND CORPUS CHRISTI.
Special weather statement, Apr 25, 6:00 AM CDT, 5 hours 11 minutes before
TXZ171>173-183>194-202>209-217>225-228-260000- HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 600 AM CDT SUN APR 25 1999 A FEW LINGERING THUNDERSTORMS MOVING ACROSS SOUTH CENTRAL TEXAS THIS MORNING WILL PRODUCE A SLIGHT RISK OF SEVERE WEATHER...MAINLY IN THE FORM OF HIGH WINDS. THIS AFTERNOON...THE ADDED MOISTURE OF THIS MORNINGS RAIN WILL COUPLE WITH AN UNSTABLE AIRMASS TO PRODUCE ADDITIONAL SCATTERED SHOWERS AND THUNDERSTORMS THIS AFTERNOON INTO THIS EVENING. AGAIN THE RISK OF SEVERE THUNDERSTORMS WILL BE SLIGHT AND MAINLY FROM HIGH WINDS. 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. FOR INFORMATION ON WEATHER THREATS IN AREAS SURROUNDING SOUTH CENTRAL TEXAS...PLEASE REFER TO THE HAZARDOUS WEATHER OUTLOOKS FROM NWS 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 |
|---|---|---|---|---|
| Apr 24, 9:00 PM CDT | Severe Thunderstorm Warning | EWX | Val Verde | 40 min |
| Apr 25, 2:21 AM CDT | Severe Thunderstorm Warning | EWX | Maverick | 64 min |
| Apr 25, 2:54 AM CDT | Severe Thunderstorm Warning | EWX | Kinney | 61 min |
| Apr 25, 3:11 AM CDT | Severe Thunderstorm Warning | EWX | Uvalde, Zavala | 79 min |
| Apr 25, 5:03 AM CDT | Severe Thunderstorm Warning | EWX | Bexar | 62 min |
| Apr 25, 7:56 AM CDT | Severe Thunderstorm Warning | EWX | Edwards | 64 min |
| Apr 25, 9:18 AM CDT | Severe Thunderstorm Warning | EWX | Edwards | 62 min |
| Apr 25, 9:46 AM CDT | Flash Flood Warning | EWX | Edwards, Real | 59 min |
| Apr 25, 10:40 AM CDT | Flash Flood Warning | EWX | Edwards, Real | 2 hr |
| Apr 25, 11:40 AM CDT | Flash Flood Warning | EWX | Kerr | 3 hr |
| Apr 25, 12:41 PM CDT | Flash Flood Warning | EWX | Real | 2 hr |
| Apr 25, 2:03 PM CDT | Severe Thunderstorm Warning | EWX | Bandera | 47 min |
| Apr 25, 2:45 PM CDT | Severe Thunderstorm Warning | EWX | Medina | 60 min |
Nearby
Severe Thunderstorm Warnings in Texas, 1999Every severe thunderstorm warning in 1999
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.