Alert archive / Texas / Flash Flood Warnings in 1987

Flash Flood Warning 43, NWS Austin/San Antonio, TX

June 3, 1987Medina County, Texas

NWS Austin/San Antonio, TX issued this flash flood warning at Jun 3, 1987, 10:44 AM CDT for Medina County, Texas. It was in force for 4 hr.

The area

The counties it named.

The facts

Issued
Jun 3, 1987, 10:44 AM CDT (15:44 UTC)
Expired
Jun 3, 1987, 2:45 PM CDT
In force
4 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, 3.7 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.

Skew-T log-pSkew-T log-p diagram, Del Rio, TX at 12:00Z on 1987-06-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 12:00Z on 1987-06-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -198 square meters per square second.193958Sfc1 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
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

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KSAT 031544
FFWSAT
TXC019-259-325-031945-
 
BULLETIN - EBS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SAN ANTONIO TX
1044 AM CDT WED JUN 3 1987
 
THE NATIONAL WEATHER SERVICE HAS ISSUED A FLASH FLOOD WARNING
EFFECTIVE UNTIL  245 PM CDT FOR PEOPLE IN THE FOLLOWING COUNTIES...
 
IN SOUTH TEXAS
          ...BANDERA...KENDALL...MEDINA
 
MODERATE TO VERY HEAVY RAINFALL IS EXPECTED TO CONTINUE OVER THESE
COUNTIES FOR THE NEXT SEVERAL HOURS.  SEVERAL INCHES OF RAIN HAVE
FALLEN IN BANDERA AND MEDINA COUNTIES ALREADY THIS MORNING AND THIS
ADDTIONAL RAIN WILL ONLY ADD TO THE FLOODING PROBLEMS.  ALTHOUGH
KENDALL COUNTY HAS ESCAPED SOME OF THE HEAVIEST RAINFALL SO FAR... IT
APPEARS THAT HEAVY RAIN WILL MOVE INTO KENDALL COUNTY AND PERSIST
FOR SEVERAL 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 FLOODEzD 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

Local storm report, Jun 3, 8:02 AM CDT, 2 hours 42 minutes before
STORM REPORT
NATIONAL WEATHER SERVICE SAN ANTONIO TX
8AM CDT WED JUN 3 1987

TIME         EVENT

 630 AM      MARBLE TO GOLF BALL SIZE HAIL IN WESTERN PART OF UVALDE
             COUNTY
Special weather statement, Jun 3, 9:16 AM CDT, 1 hour 28 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE AUSTIN TX
810 AM CDT WED JUN 3 1987

...A FLASH FLOOD WATCH REMAINS IN EFFECT TODAY...

WEATHER RADAR SHOWS A BAND OF SHOWERS WITH SOME LOCALIZED HEAVY RAIN
EXTENDING FROM LA GRANGE TO LOCKHART AND LULING AND WEST TO NEW BRAUNFELS
MODERATE TO HEAVY RAINS OVER THE HILL COUNTRY HAVE PROMPTED FLASH FLOOD
WARNINGS FOR THE SAN ANTONIO AREA AND SEVERAL COUNTIES TO THE WEST OF
BEXAR COUNTY.

SOME OF THAT HEAVIER RAIN EXTENDS NORTH INTO WESTERN GILLESPIE COUNTY...
AND THAT AREA WILL BE WATCHED CLOSELY BY THE AUSTIN WEATHER SERVICE AS
THE RAIN WILL BE PRODUCING ANOTHER RISE ON THE PEDERNALES RIVER.

THERE IS NO HEAVY RAIN THREATENING THE CITY OF AUSTIN FOR THE NEXT
FEW HOURS... BUT WE STILL HAVE A 70 PERCENT CHANCE OF THUNDERSTORMS
LATER IN THE DAY.

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, 5:22 AM CDTFlash Flood WarningEWXUvalde2 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, 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.