Alert archive / Texas / Flash Flood Warnings in 1987

Flash Flood Warning 60, NWS Austin/San Antonio, TX

June 4, 1987Atascosa County, Frio County, Texas

NWS Austin/San Antonio, TX issued this flash flood warning at Jun 4, 1987, 11:45 PM CDT for Atascosa County, Frio County, Texas. It was in force for 3 hr.

The area

The counties it named.

The facts

Issued
Jun 4, 1987, 11:45 PM CDT (04:45 UTC)
Expired
Jun 5, 1987, 3:00 AM CDT
In force
3 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 00:00Z, 4.8 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.

Skew-T log-pSkew-T log-p diagram, Victoria Regiona, TX at 00:00Z on 1987-06-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 167 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Victoria Regiona, TX at 00:00Z on 1987-06-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 46 square meters per square second.1939Sfc1 km3 km6 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
167 J/kg
Mixed-layer CIN
-82 J/kg
Mixed-layer LCL
1053 m above ground
0-6 km bulk shear
8 kt
0-1 km storm-relative helicity
46 m²/s²
0-3 km storm-relative helicity
87 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KSAT 050441
FFWSAT
TXC013-163-050800-
 
BULLETIN - EBS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SAN ANTONIO TX
1145 PM CDT THU JUN 4 1987
 
THE NATIONAL WEATHER SERVICE HAS ISSUED A FLASH FLOOD WARNING
EFFECTIVE UNTIL  300 AM CDT FOR PEOPLE IN THE FOLLOWING COUNTIES...
 
IN SOUTH TEXAS
          ...ATASCOSA...FRIO
 
THE SHERIFFS DEPARTMENTS IN ATASCOSA AND FRIO COUNTIES REPORT MOST
LOW WATER CROSSINGS AND SECONDARY ROADS STILL UNDER WATER IN THE TWO
COUNTY AREA.  THE WATER IS STILL RISING AND NO IMPROVEMENT IS
EXPECTED FOR THE NEXT COUPLE OF HOURS.
 
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 4, 10:33 PM CDT, 1 hour 12 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SAN ANTONIO TX
1035 PM CDT THU JUN 4 1987

THE FOLLOWING ARE 24 HOUR RAINFALL REPORTS FROM IN AND AROUND BEXAR
COUNTY AND SAN ANTONIO...ENDING AT 7 PM THURSDAY EVENING:

---OUTSIDE BEXAR COUNTY---        ---INSIDE BEXAR COUNTY---
DEVINE                   3.45          ---NORTHSIDE---
HONDO 10 N               2.00     AIRPORT 4N               1.15
MEDINA 12 W              1.62     SAN ANTONIO AIRPORT      0.89
MEDINA 7 N               1.10     ALAMO STADIUM            1.30
MEDINA LAKE              2.35     UTSA/1604                2.25
MEDINA 8 NNW             0.66     DELLVIEW                 1.30
BANDERA 3 NW             0.39     BULVERDE                 3.60
HOLHHEIM                 1.09     EDISON HIGH SCHOOL       1.15
JOURDANTON               3.35     FRDRKSBG RD/HILLCREST    1.50
PEARSALL 15SE            1.10     FRDRKSBG RD/V. JACKSON   1.15
FRIO TOWN 7 E            3.21     HELOTES 7 NW             2.00
                                  ENCINO PARK              0.86
---NORTHWEST SIDE---              ---CENTRAL AREA---
ROLLING RIDGE            1.45     TRINITY UNIVERSITY       1.40
THUNDERBIRD HILLS        1.09
UNIVERSITY PARK          0.95     ---WEST SIDE---
CASTLE HILLS             1.45     COOLCREST                0.90
WOODLAWN HEIGHTS         1.20     HIDDEN MEADOWS           1.05
CASTLE HILLS #2          1.31     HIGHWAY 90 W AND 410     0.92
GLENOAKS PARK            1.10

---SOUTHEAST SIDE---              ---NORTHEAST SIDE---
HIGHLAND HILLS           0.10     CAMELOT #2               1.30
PECAN VALLEY            TRACE     I-35 /RITTIMAN           1.00
VON ORMY                 1.40     WOODS OF SHAVENO         1.10
CHINA GROVE              0.09     WURZBACH/ I-35           1.25
                                  NORTHWOOD ESTATES        1.20
---SOUTHWEST SIDE---              WINDCREST                1.00
1604 AND HWY 281 S       0.30     SAN ANTONIO AIRPORT      0.89

THESE REPORTS ARE FROM THE SAN ANTONIO AREA AND BEXAR COUNTRY SKYWARM
RADIO AND HAM OPERATORS RAINFALL NETWORK.

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 4, 7:57 PM CDTFlash Flood WarningEWXAtascosa, Frio4 hr
Jun 5, 4:43 AM CDTFlash Flood WarningEWXFrio3 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.