Alert archive / Texas / Flash Flood Warnings in 1987

Flash Flood Warning 38, NWS Austin/San Antonio, TX

June 3, 1987Uvalde County, Texas

NWS Austin/San Antonio, TX issued this flash flood warning at Jun 3, 1987, 5:22 AM CDT for Uvalde County, Texas. It was in force for 2 hr.

The area

The counties it named.

The facts

Issued
Jun 3, 1987, 5:22 AM CDT (10:22 UTC)
Expired
Jun 3, 1987, 7:30 AM CDT
In force
2 hr
Issued by
NWS Austin/San Antonio, TX
Area
Whole counties

County Uvalde 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 00:00Z, 10.4 hours before the alert went out and 104 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.

Skew-T log-pSkew-T log-p diagram, Del Rio, TX at 00:00Z on 1987-06-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3393 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Del Rio, TX at 00:00Z on 1987-06-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 60 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
3393 J/kg
Mixed-layer CIN
-38 J/kg
Mixed-layer LCL
1188 m above ground
0-6 km bulk shear
33 kt
0-1 km storm-relative helicity
60 m²/s²
0-3 km storm-relative helicity
217 m²/s²
Significant tornado parameter
0.9
Supercell composite
6.1

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
TTAA00 KSAT 031022
FFWSAT
TXC463-031230-
 
BULLETIN - EBS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SAN ANTONIO TX
522 AM CDT WED JUN 3 1987
 
THE NATIONAL WEATHER SERVICE HAS ISSUED A FLASH FLOOD WARNING
EFFECTIVE UNTIL 730 AM CDT FOR PEOPLE IN THE FOLLOWING COUNTY...
 
IN SOUTH TEXAS
          ...UVALDE
 
A LINE OF VERY INTENSE THUNDERSTORMS IS MOVING INTO THE NORTHWEST
PART OF UVALDE COUNTY.  MOVEMENT WAS SOUTHEAST AT 10 MILES AN HOUR.
RAINFALL ON THE ORDER OF TWO TO THREE INCHES PER HOUR IS ESTIMATED
FROM RADAR IN SOME OF THE HEAVIER STORMS.
 
WITH THE SATURATED GROUND CONDITIONS...THE FLASH FLOOD WARNING MEANS
THAT FLOODING IS IMMINENT.
 
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.
 
PLEASE LISTEN TO YOUR LOCAL RADIO...TV OR NOAA WEATHER RADIO STATION
FOR LATER STATEMENTS OR WARNINGS REGARDING THIS SEVERE WEATHER EVENT.

The office that day

Everything else NWS Austin/San Antonio, TX issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 2, 7:16 PM CDTFlash Flood WarningEWXBexar3 hr
Jun 2, 7:17 PM CDTFlash Flood WarningEWXFayette3 hr
Jun 2, 9:20 PM CDTFlash Flood WarningEWXGuadalupe3 hr
Jun 2, 10:16 PM CDTFlash Flood WarningEWXGonzales, Wilson2 hr
Jun 2, 10:16 PM CDTFlash Flood WarningEWXBexar2 hr
Jun 3, 3:04 AM CDTFlash Flood WarningEWXEdwards, Kerr, Real116 min
Jun 3, 4:00 AM CDTSevere Thunderstorm WarningEWXVal Verde60 min
Jun 3, 4:20 AM CDTFlash Flood WarningEWXVal Verde4 hr
Jun 3, 4:57 AM CDTFlash Flood WarningEWXKerr, Real2 hr
Jun 3, 7:56 AM CDTFlash Flood WarningEWXMedina3 hr
Jun 3, 8:00 AM CDTFlash Flood WarningEWXVal Verde4 hr
Jun 3, 9:56 AM CDTFlash Flood WarningEWXWebb2 hr
Jun 3, 10:44 AM CDTFlash Flood WarningEWXBandera, Kendall4 hr
Jun 3, 10:44 AM CDTFlash Flood WarningEWXMedina4 hr
Jun 3, 12:54 PM CDTFlash Flood WarningEWXKerr3 hr
Jun 3, 2:09 PM CDTFlash Flood WarningEWXGonzales111 min
Jun 3, 2:24 PM CDTTornado WarningEWXLavaca56 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.