Alert archive / Texas / Flash Flood Warnings in 1987

Flash Flood Warning 17, NWS Austin/San Antonio, TX

May 29, 1987Bandera County, Medina County, Uvalde County, Texas

NWS Austin/San Antonio, TX issued this flash flood warning at May 29, 1987, 7:27 AM CDT for Bandera County, Medina County, Uvalde County, Texas. It was in force for 4 hr.

The area

The counties it named.

The facts

Issued
May 29, 1987, 7:27 AM CDT (12:27 UTC)
Expired
May 29, 1987, 11:30 AM CDT
In force
4 hr
Issued by
NWS Austin/San Antonio, TX
Area
Whole counties

Counties Bandera County, TX, Medina County, TX, 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 12:00Z, 0.5 hours before the alert went out and 143 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 1987-05-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 248 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 12:00Z on 1987-05-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 93 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
248 J/kg
Mixed-layer CIN
-411 J/kg
Mixed-layer LCL
996 m above ground
0-6 km bulk shear
49 kt
0-1 km storm-relative helicity
93 m²/s²
0-3 km storm-relative helicity
175 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 291227
FFWSAT
TXC019-325-463-291630-
 
BULLETIN - EBS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SAN ANTONIO TX
727 AM CDT FRI MAY 29 1987
 
THE NATIONAL WEATHER SERVICE HAS ISSUED A FLASH FLOOD WARNING
EFFECTIVE UNTIL 1130 AM CDT FOR PEOPLE IN THE FOLLOWING COUNTIES...
 
IN SOUTH TEXAS
          ...BANDERA...MEDINA...UVALDE
 
THUNDERSTORMS PRODUCING HEAVY RAIN CONTINUE TO TRACK ACROSS
UVALDE...BANDERA AND MEDINA COUNTIES.  TOTALS IN EXCESS OF 7 INCHES
HAVE BEEN REPORTED IN THESE COUNTIES THIS MORNING...WITH ADDITIONAL
AMOUNTS NEAR 5 INCHES OR MORE POSSIBLE FROM THE NEXT SERIES OF
THUNDERSTORMS.  SINCE THE GROUND IS ALREADY SATURATED...THIS RAIN
WILL NOT SOAK IN BUT RUN OFF RAPIDLY INTO ALREADY SWOLLEN OR FLOODED
CREEKS AND RIVERS AND GREATLY INCREASE THE THREAT OF FLASH FLOODING.
 
FLOOD WARNINGS ARE IN EFFECT TODAY FOR THE FRIO...SABINAL AND MEDINA
RIVERS.
 
A FLASH FLOOD WATCH CONTINUES IN EFFECT THIS MORNING FOR THE TEXAS
HILL COUNTRY...EDWARDS PLATEAU AND SOUTH CENTRAL TEXAS.
 
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.
 
PLEASE LISTEN TO YOUR LOCAL RADIO...TV OR NOAA WEATHER RADIO STATION
FOR LATER STATEMENTS OR WARNINGS REGARDING THIS SEVERE WEATHER EVENT.

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, May 29, 2:38 AM CDT, 4 hours 49 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DEL RIO TX
138 AM CDT FRI MAY 29 1987

...A SEVERE THUNDERSTORM WATCH COVERS ALL OF VAL VERDE COUNTY UNTIL
7 AM CDT...

AT 125 AM CDT RADAR INDICATED A VERY STRONG  THUNDERSTORM ABOUT 10
MILES WEST OF DEL RIO IN MEXICO MOVING EAST AT AROUND 25 MPH.
THUNDERSTORMS ARE NOW SCATTERED OVER ALL OF VAL VERDE COUNTY.

A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE FAVORABLE FOR SEVERE
THUNDERSTORMS IN A0ND CLOSE TO THE WATCH AREA. PERSONS IN THESE AREAS
SHOULD BE ON THE LOOKOUT FOR THREATENING WEATHER CONDITIONS AND
LISTEN FOR LATER STATEMENTS AND POSSIBLE WARNINGS.
Special weather statement, May 29, 2:58 AM CDT, 4 hours 29 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE AUSTIN TX
300 AM CDT FRI MAY 19 1987

...VERY INTENSE THUNDERSTORMS AND HEAVY RAINS REMAIN ON THE WEST
AND NORTH SIDE OF AUSTIN....

LOCAL RADAR SHOWS VERY STRONG THUNDERSTORMS JUST WEST OF THE CITY...NEAR
LAKE TRAVIS AND ALSO IN THE ROUND ROCK/GEORGETOWN AREAS.  RAINFALL
RATES WERE ESTIMATED AT JUST OVER TWO INCHES PER HOUR IN SEVERAL SMALL
SPOTS WITHIN THOSE STORMS.  AN UNCONFIRMED REPORT OF OVER THREE INCHES
HAS FALLEN OUT AT LAKEWAY.

THE THREAT OF FLASH FLOODING MAY BECOME MUCH MORE IMPORTANT DURING
THE EARLY MORNING HOURS...EVEN THOUGH THESE STORMS HAVE A HIGH
POTENTIAL FOR LARGE HAIL AND HIGH WINDS.

CONTINUE THE SEVERE THUNDERSTORM WATCH FOR A LARGE PORTION OF CENTRAL
AND SOUTH CENTRAL TEXAS...INCLUDING TRAVIS AND ALL SURROUNDING
COUNTIES...UNTIL 7 AM.
Special weather statement, May 29, 4:47 AM CDT, 2 hours 40 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SAN ANTONIO TX
445 AM CDT FRI MAY 29 1987

THUNDERSTORMS ARE MOVING ACROSS COMAL COUNTY.  THESE STORMS LIKELY
CONTAIN FREQUENT LIGHTNING...POSSIBLE SMALL HAIL...GUSTY WINDS AND
LOCALLY HEAVY RAIN.

AS THESE STORMS MOVE ACROSS CANYON LAKE...BOATERS AND MARINAS MAY
BE AFFECTED BY THE WEATHER...SAFETY MEASURES SHOULD BE TAKEN TO
SAFEGUARD LIFE AND PROPERTY.

ADDITIONAL STATEMENTS OR WARNINGS WILL BE ISSUED DURING THE MORNING
AS WEATHER CONDITIONS DICTATE...SO PLEASE STAY TUNED.
Local storm report, May 29, 4:50 AM CDT, 2 hours 37 minutes before
LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN TX
450 AM CDT FRI MAY 29 1987

SHOAL CREEK NOW FLOODING HOMES IN THE 6200 BLOCK.
SHOAL CREEK AT THE BRIDGE BOTTOM AND NOW FLOODING ANDERSON LANE.
RAINFA#LL TOTALS APPROACHING SIX INCHES IN MANY SPOTS AROUND
TRAVIS AND WILLIAMSON COUNTIES.

AUS/JVD.
Local storm report, May 29, 5:26 AM CDT, 2 hours 1 minute before
STORM REPORT
NATIONAL WEATHER SERVICE SAN ANTONIO TX
525 AM CDT FRI MAY 29 1987

TIME         EVENT

 113 AM      PEA SIZE HAIL AT BRACKETTVILLE AND SPOFFORD AND MARBLE
             SIZE HAIL HALFWAY BETWEEN DEL RIO AND BRACKETVILLE...
             KINNEY COUNTY
 232 AM      NUMEROUS LIGHTNING STRIKES IN KERRVILLE...KERR COUNTY
 312 AM      PEA SIZE HAIL AND LOCAL STREET FLOODING IN BANDERA...
             BANDERA COUNTY
 512 AM    O  SOME CAMP SITES WIPED OUT BY FRIO RIVER...GARNER STATE
             PARK...UVALDE COUNTY
Special weather statement, May 29, 6:57 AM CDT, 30 minutes before
BULLETIN
URBAN FLOOD STATEMENT
NATIONAL WEATHER SERVICE SAN ANTONIO TX
650 AM CDT FRI MAY 29 1987

THUNDERSTORMS...WITH FREQUENT LIGHTNING AND LOCALLY HEAVY RAIN...
HAVE MOVED INTO SAN ANTONIO AND BEXAR COUNTY.  FLOODING OF STREETS...
HIGHWAYS AND UNDERPASSES...ALONG WITH CREEKS AND LOW-WATER CROSSINGS...
CAN BE EXPECTED FOR SEVERAL HOURS THIS FRIDAY MORNING.

RUSH-HOUR TRAFFIC WILL BE SEVERELY AFFECTED AS STREETS AND HIGHWAYS
BECOME WET AND SLICK AND VISIBILITIES REDUCED IN THE HEAVY RAIN AREAS.

MOTORISTS SHOULD BE EXTREMELY CAREFUL AND REDUCE DRIVING SPEEDS
ACCORDINGLY.  FLOODED LOW-WATER CROSSINGS SHOULD NOT BE ATTEMPTED.

A FLASH FLOOD WATCH IS IN EFFECT FOR THE HILL COUONTRY...EDWARDS PLATEAU
AND ADJACENT SOUTH CENTRAL TEXAS THIS MORNING.

ADDITIONAL STATEMENTS OR WARNINGS WILL BE ISSUED AS CONDITIONS WARRANT.

The office that day

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

IssuedProductOfficeCountiesLasted
May 28, 7:05 PM CDTTornado WarningEWXVal Verde70 min
May 28, 8:20 PM CDTSevere Thunderstorm WarningEWXVal Verde70 min
May 28, 9:13 PM CDTSevere Thunderstorm WarningEWXKinney62 min
May 28, 9:55 PM CDTSevere Thunderstorm WarningEWXVal Verde65 min
May 28, 10:18 PM CDTSevere Thunderstorm WarningEWXKinney57 min
May 28, 11:14 PM CDTSevere Thunderstorm WarningEWXKinney61 min
May 29, 12:24 AM CDTSevere Thunderstorm WarningEWXReal, Uvalde66 min
May 29, 12:24 AM CDTSevere Thunderstorm WarningEWXKinney66 min
May 29, 1:35 AM CDTSevere Thunderstorm WarningEWXBandera, Medina, Uvalde55 min
May 29, 2:32 AM CDTSevere Thunderstorm WarningEWXBandera, Medina58 min
May 29, 2:35 AM CDTSevere Thunderstorm WarningEWXVal Verde2 hr
May 29, 3:14 AM CDTFlash Flood WarningEWXTravis, Williamson2 hr
May 29, 3:19 AM CDTFlash Flood WarningEWXBandera, Kendall, Kerr, Real4 hr
May 29, 3:19 AM CDTFlash Flood WarningEWXMedina, Uvalde4 hr
May 29, 3:30 AM CDTSevere Thunderstorm WarningEWXBandera, Kerr, Real, Uvalde60 min
May 29, 3:30 AM CDTSevere Thunderstorm WarningEWXKendall60 min
May 29, 3:30 AM CDTSevere Thunderstorm WarningEWXMedina60 min
May 29, 4:39 AM CDTFlash Flood WarningEWXBastrop, Caldwell, Hays4 hr
May 29, 4:39 AM CDTFlash Flood WarningEWXLee4 hr
May 29, 4:39 AM CDTFlash Flood WarningEWXBlanco4 hr
May 29, 4:55 AM CDTSevere Thunderstorm WarningEWXBandera, Medina, Uvalde65 min
May 29, 4:58 AM CDTSevere Thunderstorm WarningEWXKinney, Maverick62 min
May 29, 11:58 AM CDTFlash Flood WarningEWXEdwards, Kerr, Real3 hr
May 29, 1:32 PM CDTSevere Thunderstorm WarningEWXKerr58 min
May 29, 2:23 PM CDTFlash Flood WarningEWXEdwards, Kerr, Real3 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.