Alert archive / Texas / Flash Flood Warnings in 1987
Flash Flood Warning 58, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this flash flood warning at Jun 4, 1987, 4:08 PM CDT for Atascosa County, Frio County, Texas. It was in force for 4 hr.
The area
The counties it named.
The facts
- Issued
- Jun 4, 1987, 4:08 PM CDT (21:08 UTC)
- Expired
- Jun 4, 1987, 8:15 PM CDT
- In force
- 4 hr
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Whole counties
Counties Atascosa County, TX, Frio County, TX
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
The nearest sounding before it
Victoria Regiona, TX (KVCT), launched 12:00Z, 9.1 hours before the alert went out and 187 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
- 824 J/kg
- Mixed-layer CIN
- -20 J/kg
- Mixed-layer LCL
- 675 m above ground
- 0-6 km bulk shear
- 16 kt
- 0-1 km storm-relative helicity
- 59 m²/s²
- 0-3 km storm-relative helicity
- 130 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KSAT 042108
FFWSAT
TXC013-163-050115-
BULLETIN - EBS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SAN ANTONIO TX
408 PM CDT THU JUN 4 1987
THE NATIONAL WEATHER SERVICE HAS ISSUED A FLASH FLOOD WARNING
EFFECTIVE UNTIL 815 PM CDT FOR PEOPLE IN THE FOLLOWING COUNTIES...
IN SOUTH TEXAS
...ATASCOSA...FRIO
THUNDERSTORMS WITH MODERATE TO OCCASIONALLY VERY HEAVY RAINFALL HAVE
CONTINUED TO SPREAD ACROSS ATASCOSA AND FRIO COUNTIES. THESE HEAVY
RAINS ARE EXPECTED TO CONTINUE FOR THE NEXT SEVERAL HOURS CAUSING
FLOODING OF SOME ROADWAYS...DRAINAGE AREAS...AND LOW WATER CROSSINGS.
A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR HAS BEEN
REPORTED.
REMEMBER...DEATHS DURING FLASH FLOODING ARE FREQUENTLY RELATED TO
MOTORISTS DRIVING INTO FLOODED LOW WATER CROSSINGS OR FROM CHILDREN
PLAYING NEAR FLOODED STREAMS OR DRAINAGE AREAS.
A FLOOD AND FLASH FLOOD WATCH IS IN EFFECT THROUGH TONIGHT FOR
SOUTHCENTRAL TEXAS...THE RIO GRANDE PLAINS...AND THE COASTAL BEND.The office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 4, 1:53 AM CDT | Flash Flood Warning | EWX | Gonzales | 3 hr |
| Jun 4, 3:10 AM CDT | Flash Flood Warning | EWX | Kendall | 110 min |
| Jun 4, 3:32 AM CDT | Flash Flood Warning | EWX | Caldwell | 3 hr |
| Jun 4, 4:24 AM CDT | Flash Flood Warning | EWX | Travis | 3 hr |
| Jun 4, 4:44 AM CDT | Flash Flood Warning | EWX | Lavaca | 2 hr |
| Jun 4, 5:02 AM CDT | Flash Flood Warning | EWX | Gonzales | 4 hr |
| Jun 4, 6:35 AM CDT | Flash Flood Warning | EWX | Lavaca | 2 hr |
| Jun 4, 7:31 AM CDT | Flash Flood Warning | EWX | Caldwell, Hays, Travis | 6 hr |
| Jun 4, 8:30 AM CDT | Flash Flood Warning | EWX | Lavaca | 2 hr |
| Jun 4, 8:46 AM CDT | Flash Flood Warning | EWX | Burnet, Williamson | 3 hr |
| Jun 4, 8:47 AM CDT | Flash Flood Warning | EWX | Gonzales | 4 hr |
| Jun 4, 11:47 AM CDT | Flash Flood Warning | EWX | Bexar | 3 hr |
| Jun 4, 2:30 PM CDT | Severe Thunderstorm Warning | EWX | Calhoun | 60 min |
Nearby
Flash Flood Warnings in Texas, 1987Every flash flood warning in 1987
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.