Alert archive / Texas / Flash Flood Warnings in 1999
Flash Flood Warning 18, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this flash flood warning at Apr 25, 1999, 12:41 PM CDT for 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, 12:41 PM CDT (17:41 UTC)
- Expired
- Apr 25, 1999, 2:45 PM CDT
- In force
- 2 hr
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
County Real County, TX
The radar
The Laughlin AFB radar (KDFX), 73 km from the middle of the area, began a volume at 17:43 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, 5.7 hours before the alert went out and 107 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 251742 FFWSAT TXC385-251945- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 1241 PM CDT SUN APR 25 1999 THE NATIONAL WEATHER SERVICE IN AUSTIN/SAN ANTONIO HAS ISSUED A * FLASH FLOOD WARNING FOR... REAL COUNTY * UNTIL 245 PM CDT * THUNDERSTORMS WILL CONTINUE TO TRACK ACROSS REAL COUNTY THROUGH 2 PM. ADDITIONAL RAINFALL WILL FILL LOW WATER CROSSINGS AND LOW LYING AREAS. MOTORISTS ARE URGED TO EXERCISE CAUTION ESPECIALLY ALONG HIGHWAYS 335...336...AND 337. 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 IFT WATER COVERS THE ROADWAY. NEVER TRY TO CROSS A FLOWING STREAM...EVEN A SMALL ONE...ON FOOT. TO ESCAPE RISING WATER MOVE UP TO HIGHER GROUND. LAT...LON 2980 9994 2967 9980 2978 9967 3003 9993
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, 11:40 AM CDT | Flash Flood Warning | EWX | Kerr | 3 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.