Alert archive / Texas / Flash Flood Warnings in 1999
Flash Flood Warning 54, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this flash flood warning at Jun 21, 1999, 2:12 AM CDT for Val Verde 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 counties it named.
The facts
- Issued
- Jun 21, 1999, 2:12 AM CDT (07:12 UTC)
- Expired
- Jun 21, 1999, 4:15 AM CDT
- In force
- 2 hr
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Whole counties
County Val Verde County, TX
The radar
The Laughlin AFB radar (KDFX), 109 km from the middle of the area, began a volume at 07:11 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 00:00Z, 7.2 hours before the alert went out and 66 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
- 563 J/kg
- Mixed-layer CIN
- -3 J/kg
- Mixed-layer LCL
- 529 m above ground
- 0-6 km bulk shear
- 21 kt
- 0-1 km storm-relative helicity
- 4 m²/s²
- 0-3 km storm-relative helicity
- 93 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 1.6
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KEWX 210720 FFWSAT TXC465-210915- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 212 AM CDT MON JUN 21 1999 THE NATIONAL WEATHER SERVICE IN AUSTIN/SAN ANTONIO HAS ISSUED A * FLASH FLOOD WARNING FOR THE FOLLOWING... VAL VERDE COUNTY IN TEXAS * UNTIL 415 AM CDT * WEATHER RADAR IS SHOWING MODERATE TO HEAVY RAIN MOVING FROM THE SOUTH INTO SOUTHERN VEL VERDE COUNTY. THE SHERIFFS DEPARTMENT IN DEL RIO REPORTED THE STREAM AND CREEKS RISING. THE HIGHWAY DEPARTMENT HAS ALREADY CLOSED HIGHWAY 163 NORTH OF COMSTOCK WHERE IT CROSSES THE DRY DEVILS. RAINFALL WILL CONTINUE THROUGHT THE EARLY MORNING HOURS. RAINFALL TOTALS OF TWO TO THREE INCHES CAN BE EXPECTED OVERNIGHT. BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE DANGERS OF FLOODS AND FLASH FLOODS. IF FLASH FLOODING IS OBSERVED ACT QUICKLY. MOVE UP TO HIGHER GROUND TO ESCAPE FLOOD WATERS. DO NOT STAY INf AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING.
The office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 21, 10:01 AM CDT | Flash Flood Warning | EWX | Bexar | 3 hr |
| Jun 21, 10:45 AM CDT | Flash Flood Warning | EWX | Wilson | 2 hr |
| Jun 21, 10:54 AM CDT | Flash Flood Warning | EWX | Bandera, Real | 2 hr |
| Jun 21, 11:35 AM CDT | Flash Flood Warning | EWX | Comal | 115 min |
| Jun 21, 12:19 PM CDT | Flash Flood Warning | EWX | Guadalupe | 101 min |
| Jun 21, 1:11 PM CDT | Flash Flood Warning | EWX | Hays | 3 hr |
| Jun 21, 1:18 PM CDT | Flash Flood Warning | EWX | Comal, Guadalupe | 2 hr |
| Jun 21, 1:55 PM CDT | Flash Flood Warning | EWX | Caldwell | 2 hr |
| Jun 21, 2:45 PM CDT | Flash Flood Warning | EWX | Caldwell, Travis | 3 hr |
| Jun 21, 3:20 PM CDT | Flash Flood Warning | EWX | Williamson | 2 hr |
| Jun 21, 3:51 PM CDT | Flash Flood Warning | EWX | Medina | 99 min |
| Jun 21, 5:20 PM CDT | Flash Flood Warning | EWX | Williamson | 70 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.