Alert archive / Texas / Flash Flood Warnings in 1987
Flash Flood Warning 80, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this flash flood warning at Jun 13, 1987, 7:20 AM CDT for Bexar County, Medina County, Texas. It was in force for 4 hr.
The area
The counties it named.
The facts
- Issued
- Jun 13, 1987, 7:20 AM CDT (12:20 UTC)
- Expired
- Jun 13, 1987, 11:15 AM CDT
- In force
- 4 hr
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Whole counties
Counties Bexar County, TX, 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
Victoria Regiona, TX (KVCT), launched 12:00Z, 0.3 hours before the alert went out and 196 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
- 1986 J/kg
- Mixed-layer CIN
- -3 J/kg
- Mixed-layer LCL
- 520 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- 41 m²/s²
- 0-3 km storm-relative helicity
- 59 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.8
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KSAT 131220
FFWSAT
TXC029-325-131615-
BULLETIN - EBS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SAN ANTONIO TX
720 AM CDT SAT JUN 13 1987
THE NATIONAL WEATHER SERVICE HAS ISSUED A FLASH FLOOD WARNING
EFFECTIVE UNTIL 1115 AM CDT FOR PEOPLE IN THE FOLLOWING COUNTIES...
IN SOUTH TEXAS
...BEXAR...MEDINA
AT 700 AM VERY HEAVY THUNDESTORMS HAVE DEVELOPED OVER MEDINA AND
THE WESTERN HALF OF BEXAR COUNTY. THESE THUNDERSTORMS SHOW A VERY
SLOW EASTWARD MOVEMENT. RAIN FALL AMOUNTS OF 3 TO 4 INCHES HAVE
ALREADY FALLEN OVER PARTS OF MEDINA COUNTY.
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.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, Jun 13, 7:06 AM CDT, 14 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SAN ANTONIO TX 710 AM CDT SAT JUN 13 1987 AT 700 AM CDT THIS MORNING A HEAVY THUNDERSTORM WAS LOCATED OVER CENTRAL BEXAR COUNTY WITH LIGHT TO MODERATE SHOWERS OVER THE REST OF BEXAR COUNTY. THE THUNDERSTORM OVER NORTH CENTRAL SAN ANTONIO HAS SHOWN LITTLE MOVEMENT IN THE PAST HOUR. HEAVY RAINS ARE FALLING FROM THIS THUNDERSTORM AND A FLASH FLOOD WARNING MAY BE ISSUED FOR BEXAR COUNTY IF THIS THUNJDERSTORM REMAINS STRONG AND NEARLY STATIONARY. ADDITIONAL STATEMENTS WILL BE ISSUED AS NECESSARY.
The office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 12, 10:17 PM CDT | Flash Flood Warning | EWX | Blanco, Gillespie | 3 hr |
| Jun 12, 10:17 PM CDT | Flash Flood Warning | EWX | Burnet, Hays, Travis, Williamson | 3 hr |
| Jun 13, 8:21 AM CDT | Flash Flood Warning | EWX | Atascosa | 3 hr |
| Jun 13, 11:15 AM CDT | Flash Flood Warning | EWX | McMullen | 2 hr |
| Jun 13, 11:23 AM CDT | Flash Flood Warning | EWX | Bastrop, Caldwell | 3 hr |
| Jun 13, 12:06 PM CDT | Flash Flood Warning | EWX | Kinney, Uvalde | 3 hr |
| Jun 13, 12:16 PM CDT | Flash Flood Warning | EWX | Travis | 3 hr |
| Jun 13, 1:46 PM CDT | Flash Flood Warning | EWX | Kerr, Real | 3 hr |
| Jun 13, 2:28 PM CDT | Flash Flood Warning | EWX | Blanco, Burnet, Travis | 3 hr |
| Jun 13, 2:28 PM CDT | Flash Flood Warning | EWX | Williamson | 3 hr |
| Jun 13, 5:05 PM CDT | Flash Flood Warning | EWX | Val Verde | 4 hr |
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.