Alert archive / Texas / Flash Flood Warnings in 1987

Flash Flood Warning 18, NWS Austin/San Antonio, TX

May 29, 1987Edwards County, Kerr County, Real County, Texas

NWS Austin/San Antonio, TX issued this flash flood warning at May 29, 1987, 11:58 AM CDT for Edwards County, Kerr County, Real County, Texas. It was in force for 3 hr.

The area

The counties it named.

The facts

Issued
May 29, 1987, 11:58 AM CDT (16:58 UTC)
Expired
May 29, 1987, 3:00 PM CDT
In force
3 hr
Issued by
NWS Austin/San Antonio, TX
Area
Whole counties

Counties Edwards County, TX, Kerr County, TX, Real 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, 5.0 hours before the alert went out and 118 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 291658
FFWSAT
TXC137-265-385-292000-
 
BULLETIN - EBS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SAN ANTONIO TX
1158 AM CDT FRI MAY 29 1987
 
THE NATIONAL WEATHER SERVICE HAS ISSUED A FLASH FLOOD WARNING
EFFECTIVE UNTIL  300 PM CDT FOR PEOPLE IN THE FOLLOWING COUNTIES...
 
IN SOUTH TEXAS
          ...EDWARDS...KERR...REAL
 
THUNDERSTORMS WITH HEAVY RAINFALL HAVE REDEVELOPED OVER THESE
COUNTIES AND ARE EXPECTED TO CONTINUE FOR THE NEXT FEW HOURS.
RAINFALL AMOUNTS FROM THREE TO EIGHT INCHES FELL LAST NIGHT AND
SEVERAL MORE INCHES ARE EXPECTED THIS AFTERNOON.
 
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, May 29, 6:57 AM CDT, 5 hours 1 minute 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.
Special weather statement, May 29, 9:08 AM CDT, 2 hours 50 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SAN ANTONIO TX
910 AM CDT FRI MAY 29 1987

THUNDERSTORMS...WITH FREQUENT LIGHTNING AND LOCALLY HEAVY RAIN...
CONTINUE ACROSS THE HILL COUNTRY AND ADJACENT SOUTH CENTRAL TEXAS.

SOME OF THESE THUNDERSTORMS ARE JUST NOW BEGINNING TO ENTER KERR...
KENDALL AND COMAL COUNTIES.  ADDITIONAL RAINFALL FROM THESE STORMS
COULD CAUSE LOCALIZED FLOODING OF ROADS AND STREETS...LOW-WATER
CROSSINGS AND CREEK$S AND TRIBUTARIES LEADING INTO THE GUADALUPE
RIVER.

PLEASE STAY TUNED FOR LATER WEATHER AND RIVER FLOOD STATEMENTS OR
WARNINGS.
Special weather statement, May 29, 10:00 AM CDT, 1 hour 58 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE AUSTIN TX
1000 AM CDT FRI MAY 29 1987

...SEVERE THUNDERSTORM WATCH CONTINUES IN EFFECT UNTIL NOON CDT...
...FLASH FLOOD WATCH IN EFFECT THIS MORNING...

AT 950 AM AUSTIN RADAR CONTINUES TO SHOW WIDESPREAD RAIN OVER CENTRAL
TEXAS WITH THE STRANGEST THUNDERSTORMS FROM NEAR KERRVILLE TO SOUTH OF
SAN ANTONIO TO NEAR VICTORIA TO NEAR WHARTON. ALSO THUNDERSTORMS WERE
NEAR GEORGETOWN AND ROUND ROCK TO SOUTH OF BASTROP. THE ACTIVITY IS
MOVING TO THE EAST AND NORTHEAST NEAR 20 MPH.

NO SEVERE WEATHER OR FLASH FLOODING HAS BEEN RPORTED IN THE AREA FOR
THE LAST COUPLE OF HOURS BUT MANY SMALL STREAMS CONTINUE BANKFULL AND
MANY LOW WATER CROSSINGS ARE STILL DANGEROUS. MOTORISTS ARE URGED TO
USE EXTREME CAUTION WHILE DRIVING AND DO NOT ATTEMPT TO DRIVE THROUGH
LOW WATER CROSSINGS OR WATER OF UNKNOWN DEPTH.

KEEP INFORMED OF THIS DANGEROUS SITUATION.
Special weather statement, May 29, 10:42 AM CDT, 1 hour 16 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE AUSTIN TX
1040 AM CDT FRI MAY 29 1987

...FLASH FLOOD WATCH CONTINUES FOR TODAY...

THE SEVERE THUNDERSTORM WATCH FOR THE AREA HAS BEEN CANCELLED. AT
1030 AM AUSTIN RADAR CONTINUES TO SHOW WIDESPREAD RAIN OVER CENTRAL
TEXAS WITH THE STRANGEST THUNDERSTORMS FROM NEAR KERRVILLE TO SOUTH OF
HONDO AND EASTWARD TO COLLEGE STATION AND HOUSTON AND GALVESTON. VERY
STRONG THUNDERSTORMS WITH FLOODING ARE OCCURRING NEAR MEDINA LAKE WEST
OF SAN ANTONIO. ACTIVITY IS MOVING EAST AND NORTHEAST NEAR 20 MPH.

NO FLASH FLOODING HAS BEEN RPORTED IN THE AREA FOR THE PAST SEVERAL
HOURS BUT MANY SMALL STREAMS CONTINUE BANKFULL AND MANY LOW WATER
CROSSINGS ARE STILL DANGEROUS. MOTORISTS ARE URGED TO KEEP INFORMED AND
DO NOT ATTEMPT TO DRIVE THROUGH LOW WATER CROSSINGS OR THROUGH WATER
OVER ROADWAYS. THIS HEAVY RAINFALL EVENT WILL CONTINUE THROUGH TODAY.

STAY TUNED TO RADIO...TV OR NOAA WEATHER RADIO FOR \LATEST INFORMATION.
Special weather statement, May 29, 11:44 AM CDT, 14 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE AUSTIN TX
1143 AM CDT FRI MAY 29 1987

...FLASH FLOOD WATCH CONTINUES FOR TODAY...

AT 1130 AM AUSTIN RADAR CONTINUES TO SHOW WIDESPREAD RAIN EAST OF A
LINE FROM WACO TO MARBLE FALLS TO JUST WEST OF KERRVILLE AND SOUTHWARD.
STRONG THUNDERSTORMS WERE OCCURRING NEAR KERRVILLE TO SAN ANTONIO.
ACTIVITY IS MOVING EAST AND NORTHEAST NEAR 20 MPH.

NO FLASH FLOODING HAS BEEN RPORTED IN THE AREA FOR THE PAST SEVERAL
HOURS BUT MANY SMALL STREAMS CONTINUE BANKFULL AND MANY LOW WATER
CROSSINGS ARE STILL DANGEROUS. MOTORISTS ARE URGED TO KEEP INFORMED AND
DO NOT ATTEMPT TO DRIVE THROUGH LOW WATER CROSSINGS OR THROUGH WATER
OVER ROADWAYS. THIS HEAVY RAINFALL EVENT WILL CONTINUE THROUGH TODAY.

STAY TUNED TO RADIO...TV OR NOAA WEATHER RADIO FOR LATEST INFORMATION.

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, 7:27 AM CDTFlash Flood WarningEWXBandera, Medina, Uvalde4 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.