Alert archive / Texas / Flash Flood Warnings in 1999
Flash Flood Warning 16, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this flash flood warning at Apr 25, 1999, 10:40 AM CDT for Edwards County, Real County, Texas. It was in force for 2 hr. 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
- Apr 25, 1999, 10:40 AM CDT (15:40 UTC)
- Expired
- Apr 25, 1999, 12:45 PM CDT
- In force
- 2 hr
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
Counties Edwards County, TX, Real County, TX
The radar
The Laughlin AFB radar (KDFX), 84 km from the middle of the area, began a volume at 15:39 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, 3.7 hours before the alert went out and 101 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 KEWX 251541 FFWSAT TXC137-385-251745- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 1040 AM CDT SUN APR 25 1999 THE NATIONAL WEATHER SERVICE IN AUSTIN/SAN ANTONIO HAS ISSUED A * FLASH FLOOD WARNING FOR... REAL COUNTY EDWARDS COUNTY * UNTIL 1245 PM CDT * THUNDERSTORMS CONTINUE TO TRACK OVER THE SAME GENERAL AREA WITH RAINFALL AMOUNTS APPROACHING 2 TO 3 INCHES PER HOUR. EXCESSIVE RUNOFF FROM THESE STORMS WILL CAUSE FLASH FLOODING OF SMALL CREEKS AND STREAMS...COUNTRY ROADS...NORMALLY DRY WASHES AND ARROYOS...AS WELL AS FARMLAND ALONG THE BANKS OF CREEKS AND STREAMS. MOTORISTS SHOULD BE ESPECIALLY CAUTIOUS ALONG HIGHWAYS 335...336...AND 337 IN REAL COUNTY. A FLASH FLOOD WARNING MEANS THAT FLOODING IS OCCURRING OR IS IMMINENT. MOST FLASH FLOOD DEATHS OCCUR IN AUTOMOBILES. DO NOT ATTEMPT TO CROSS BRIDGES...DIPS...OR OTHER LOW SPOTS IF WATER COVERS THE ROADWAY. NEVER TRY TO CROS S A FLOWING STREAM...EVEN A SMALL ONE...ON FOOT. TO ESCAPE RISING WATER MOVE UP TO HIGHER GROUND. LAT...LON 3021 9980 2971 9968 2971 10058 3022 10061
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, 4 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, 4 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, 11:11 AM CDT | Severe Thunderstorm Warning | EWX | Bandera, Uvalde | 49 min |
| 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
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.