Alert archive / Texas / Flash Flood Warnings in 1987
Flash Flood Warning 39, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this flash flood warning at Jun 3, 1987, 7:56 AM CDT for Medina County, Texas. It was in force for 3 hr.
The area
The counties it named.
The facts
- Issued
- Jun 3, 1987, 7:56 AM CDT (12:56 UTC)
- Expired
- Jun 3, 1987, 11:00 AM CDT
- In force
- 3 hr
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Whole counties
County Medina 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
Del Rio, TX (KDRT), launched 12:00Z, 0.9 hours before the alert went out and 168 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 684 m above ground
- 0-6 km bulk shear
- 20 kt
- 0-1 km storm-relative helicity
- -198 m²/s²
- 0-3 km storm-relative helicity
- -45 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 031256
FFWSAT
TXC325-031600-
BULLETIN - EBS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SAN ANTONIO TX
756 AM CDT WED JUN 3 1987
THE NATIONAL WEATHER SERVICE HAS ISSUED A FLASH FLOOD WARNING
EFFECTIVE UNTIL 1100 AM CDT FOR PEOPLE IN THE FOLLOWING COUNTY...
IN SOUTH TEXAS
...MEDINA
A LINE OF THUNDERSTORMS IS MOVING SLOWLY THROUGH MEDINA COUNTY. THIS
LINE OF THUNDERSTORMS HAS ALREADY CAUSED 2 TO 4 INCHES OF RAIN OVER
BANDERA AND NORTHERN UVALDE COUNTIES AND WILL LIKELY CAUSE 3 TO 5
INCHES OF RAIN OVER MEDINA COUNTY...ESPECIALLY THE NORTHERN SECTIONS.
DRIVING IS BECOMING HAZARDOUS IN MEDINA COUNTY. MOST LOW WATER
CROSSINGS AND LOW ROADS ARE ALREADY FLOODED AND VISIBILITIES NEAR THE
THUNDERSTORMS ARE GREATLY REDUCED IN BLINDING RAIN. THE HEAVY RAINS
WILL LIKELY CONTINUE ANOTHER ONE TO TWO HOURS.
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.
DANGEROUS LIGHTNING AND GUSTY WINDS OFTEN ACCOMPANY FLASH FLOOD
PRODUCING THUNDERSTORMS.The office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 2, 7:16 PM CDT | Flash Flood Warning | EWX | Bexar | 3 hr |
| Jun 2, 7:17 PM CDT | Flash Flood Warning | EWX | Fayette | 3 hr |
| Jun 2, 9:20 PM CDT | Flash Flood Warning | EWX | Guadalupe | 3 hr |
| Jun 2, 10:16 PM CDT | Flash Flood Warning | EWX | Gonzales, Wilson | 2 hr |
| Jun 2, 10:16 PM CDT | Flash Flood Warning | EWX | Bexar | 2 hr |
| Jun 3, 3:04 AM CDT | Flash Flood Warning | EWX | Edwards, Kerr, Real | 116 min |
| Jun 3, 4:00 AM CDT | Severe Thunderstorm Warning | EWX | Val Verde | 60 min |
| Jun 3, 4:20 AM CDT | Flash Flood Warning | EWX | Val Verde | 4 hr |
| Jun 3, 4:57 AM CDT | Flash Flood Warning | EWX | Kerr, Real | 2 hr |
| Jun 3, 5:22 AM CDT | Flash Flood Warning | EWX | Uvalde | 2 hr |
| Jun 3, 8:00 AM CDT | Flash Flood Warning | EWX | Val Verde | 4 hr |
| Jun 3, 9:56 AM CDT | Flash Flood Warning | EWX | Webb | 2 hr |
| Jun 3, 10:44 AM CDT | Flash Flood Warning | EWX | Bandera, Kendall | 4 hr |
| Jun 3, 10:44 AM CDT | Flash Flood Warning | EWX | Medina | 4 hr |
| Jun 3, 12:54 PM CDT | Flash Flood Warning | EWX | Kerr | 3 hr |
| Jun 3, 2:09 PM CDT | Flash Flood Warning | EWX | Gonzales | 111 min |
| Jun 3, 2:24 PM CDT | Tornado Warning | EWX | Lavaca | 56 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.