Alert archive / Texas / Flash Flood Warnings in 1999
Flash Flood Warning 17, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this flash flood warning at Apr 25, 1999, 11:40 AM CDT for Kerr County, Texas. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Apr 25, 1999, 11:40 AM CDT (16:40 UTC)
- Expired
- Apr 25, 1999, 2:35 PM CDT
- In force
- 3 hr
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Whole counties
County Kerr County, TX
The radar
The Laughlin AFB radar (KDFX), 126 km from the middle of the area, began a volume at 16:39 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, 4.7 hours before the alert went out and 163 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 251638 FFWSAT TXC265-251935- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 1140 AM CDT SUN APR 25 1999 THE NATIONAL WEATHER SERVICE IN AUSTIN/SAN ANTONIO HAS ISSUED A * FLASH FLOOD WARNING FOR... KERR COUNTY IN TEXAS * UNTIL 235 PM CDT * NATIONAL WEATHER SERVICE DOPPLER RADAR ESTIMATED RAINFALLS OF 2 TO 3 INCHES PER HOUR OVER WESTERN KERR COUNTY. ADDITIONAL THUNDERSTORMS MOVING UP FROM THE SOUTHWEST SHOULD OVERSPEAD THE COUNTY AND PRODUCE AN ADDITIONAL 1 TO 2 INCHES OF RAIN. CAMPERS IN PARTICULAR SHOULD BE ALERT FOR RAPIDLY RISING WATER AND BE PREPARED TO MOVE TO HIGHER GROUND. MOTORISTS SHOULD NOT DRIVE INTO WATER COVERING THE ROAD.h IF FLASH FLOODING IS OBSERVED... ACT QUICKLY. MOVE TO HIGHER GROUND TO ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING.
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, Apr 25, 6:00 AM CDT, 5 hours 40 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 40 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, 11:11 AM CDT | Severe Thunderstorm Warning | EWX | Bandera, Uvalde | 49 min |
| 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
Flash Flood Warnings in Texas, 1999Every flash flood 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.