Alert archive / Texas / Flash Flood Warnings in 1987
Flash Flood Warning 92, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this flash flood warning at Jul 17, 1987, 4:55 AM CDT for Kerr County, Texas. It was in force for 4 hr.
The area
The counties it named.
The facts
- Issued
- Jul 17, 1987, 4:55 AM CDT (09:55 UTC)
- Expired
- Jul 17, 1987, 9:00 AM CDT
- In force
- 4 hr
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Whole counties
County Kerr 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, 9.9 hours before the alert went out and 163 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.
- Mixed-layer CAPE
- 2501 J/kg
- Mixed-layer CIN
- -3 J/kg
- Mixed-layer LCL
- 1032 m above ground
- 0-6 km bulk shear
- 40 kt
- 0-1 km storm-relative helicity
- 55 m²/s²
- 0-3 km storm-relative helicity
- 128 m²/s²
- Significant tornado parameter
- 1.2
- Supercell composite
- 8.5
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KSAT 170955
FFWSAT
TXC265-171400-
BULLETIN - EBS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SAN ANTONIO TX
455 AM CDT FRI JUL 17 1987
THE NATIONAL WEATHER SERVICE HAS ISSUED A FLASH FLOOD WARNING
EFFECTIVE UNTIL 9 AM CDT FOR PEOPLE IN THE FOLLOWING COUNTY...
IN SOUTH TEXAS
...KERR...AND SPECIFICALLY THE GUADALUPE RIVER...
AT 455 AM CDT...A MAJOR LIFE-THREATENING FLOOD CONTINUES ON THE
GUADALUPE RIVER IN KERR COUNTY. RAINFALL TOTALS BETWEEN 5 AND 10
INCHES OCCURRED DURING THE NIGHT ON THE HEADWATERS AND WATERSHED OF
THE GUADALUPE RIVER IN WESTERN KERR COUNTY. THIS RUNOFF INTO THE
RIVER AND ITS TRIBUTARIES HAS CAUSED THE RIVER TO RISE TO RECORD
LEVELS IN SOME LOCATIONS. THE GUADALUPE RIVER AT HUNT IS 16 FEET
ABOVE FLOOD STAGE...28.2 FEET...FLOOD STAGE IS 16 FEET. THIS IS OVER
5 FEET ABOVE THE 1978 HILL COUNTRY FLOOD CREST. THE RIVER AT HUNT IS
FORECAST TO RISE EVEN HIGHER THIS MORNING AS RAINFALL CONTINUES IN
THE WATERSHED AND WATER RUNS OFF INTO THE RIVER BASIN.
THESE FLOOD WATERS WILL EVENTUALLY FLOW DOWNSTREAM PAST KERRVILLE TO
COMFORT AND SPRING BRANCH LATER IN THE DAY...THEN INTO CANYON LAKE.
THE FLASH FLOOD WARNING WILL LIKELY BE EXTENDED LATER TODAY AS WILL
THE FLOOD WARNING FOR THE GUADALUPE RIVER.
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, Jul 17, 12:27 AM CDT, 4 hours 28 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE AUSTIN TX
1225 AM CDT FRI JUL 17 1987
...STRONG THUNDERSTORMS OVER WESTERN GILLESPIE COUNTY...
AUSTIN RADAR WAS INDICATING STRONG THUNDERSTORMS OVER WESTERN PORTIONS OF
GILLISPIE COUNTY...OTHER STRONG THUNDERSTORMS WERE INDICATED TO THE WEST
OF LLANO AND SAN SABA COUNTIES. MOVEMENT WAS TOWARDS THE NORTHEAST AT
NEAR 20 MPH.
THESE THUNDERSTORMS ARE INDICATING A HEAVY RAINFALL RATE OF UP TO THREE
INCHES PER HOUR. THE RATE AT WHICH RAIN IS FALLING MAY PRODUCE TEMPORARY
FLOODING OF LOW WATER CROSSINGS AND URBAN STREETS IN SOME LOCATIONS.
MOTORISTS SHOULD BE ALERT TO THIS POSSIBILITIES.
ADDITIONAL STATEMENTS WILL BE ISSUED AS CONDITIONS WARRANT.Special weather statement, Jul 17, 2:21 AM CDT, 2 hours 34 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE AUSTIN TX 215 AM CDT FRI JUL 17 1987 ...STRONG THUNDERSTORMS OVER GILLESPIE AND SAN SABA COUNTIES... AUSTIN RADAR WAS INDICATING STRONG THUNDERSTORMS WITH HEAVY RAINFALL OVER GILLISPIE AND SAN SABA COUNTIES MOVING TOWARDS THE NORTHEAST INTO MILLS...LAMPASAS AND LLANO COUNTIES WITHIN THE NEXT HOUR. THESE THUNDERSTORMS ARE INDICATING A HEAVY RAINFALL RATE OF UP TO THREE INCHES PER HOUR. THE RATE AT WHICH RAIN IS FALLING MAY PRODUCE TEMPORARY FLOODING OF LOW WATER CROSSINGS AND URBAN STREETS IN SOME LOCATIONS. MOTORISTS SHOULD BE ALERT TO THIS POSSIBILITIES. PERSONS ALONG THE PEDERNALES RIVER SHOULD STAY ALERT TO A POSSIBLE SHARP RISE ALONG THE RIVER DUE TO THE HEAVY RAINFALL OVER GILLISPIE COUNTY OVER THE PAST FEW HOURS.
Special weather statement, Jul 17, 3:43 AM CDT, 1 hour 12 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE AUSTIN TX 340 AM CDT FRI JUL 17 1987 ...THUNDERSTORMS WITH HEAVY RAINS WEST THROUGH NORTHWEST OF AUSTIN... STRONG THUNDERSTORMS WITH HEAVY RAINS ARE INDICATED IN A BAND 15 MILES WIDE FROM BLANCO TO LAKE BUCHANAN TO ADAMSVILLE...MOVEMENT WAS TOWARDS THE EAST AT NEAR 20 MPH. THESE THUNDERSTORMS ARE INDICATING A HEAVY RAINFALL RATE OF UP TO THREE INCHES PER HOUR. THE RATE AT WHICH RAIN IS FALLING MAY PRODUCE TEMPORARY FLOODING OF LOW WATER CROSSINGS AND URBAN STREETS IN SOME LOCATIONS. MOTORISTS SHOULD BE ALERT TO THIS POSSIBILITIES. PERSONS ALONG THE PEDERNALES RIVER SHOULD STAY ALERT TO A POSSIBLE SHARP RISE ALONG THE RIVER DUE TO THE HEAVY RAINFALL.
Special weather statement, Jul 17, 3:48 AM CDT, 1 hour 7 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE AUSTIN TX 340 AM CDT FRI JUL 17 1987 ...THUNDERSTORMS WITH HEAVY RAINS WEST THROUGH NORTHWEST OF AUSTIN... STRONG THUNDERSTORMS WITH HEAVY RAINS ARE INDICATED IN A BAND 15 MILES WIDE FROM BLANCO TO LAKE BUCHANAN TO ADAMSVILLE...MOVEMENT WAS TOWARDS THE EAST AT NEAR 20 MPH. THESE THUNDERSTORMS ARE INDICATING A HEAVY RAINFALL RATE OF UP TO THREE INCHES PER HOUR. THE RATE AT WHICH RAIN IS FALLING MAY PRODUCE TEMPORARY FLOODING OF LOW WATER CROSSINGS AND URBAN STREETS IN SOME LOCATIONS. MOTORISTS SHOULD BE ALERT TO THIS POSSIBILITIES. PERSONS ALONG THE PEDERNALES RIVER SHOULD STAY ALERT TO A POSSIBLE SHARP RISE ALONG THE RIVER DUE TO THE HEAVY RAINFALL. A LARGE AREA OF SHOWERS AND THUNDERSTORMS WAS INDICATED WEST OF A LINE FROM WEST OT WACO TO LAKE TRAVIS TO NORTHWEST OF SAN ANTONIO WITH MOVEMENT TOWARDS THE NORTHEAST. ADDITIONAL STATEMENTS WILL BE ISSUED AS CONDITIONS WARRANT.
Special weather statement, Jul 17, 3:49 AM CDT, 1 hour 6 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE AUSTIN TX 340 AM CDT FRI JUL 17 1987 ...THUNDERSTORMS WITH HEAVY RAINS WEST THROUGH NORTHWEST OF AUSTIN... STRONG THUNDERSTORMS WITH HEAVY RAINS ARE INDICATED IN A BAND 15 MILES WIDE FROM BLANCO TO LAKE BUCHANAN TO ADAMSVILLE...MOVEMENT WAS TOWARDS THE EAST AT NEAR 20 MPH. THESE THUNDERSTORMS ARE INDICATING A HEAVY RAINFALL RATE OF UP TO THREE INCHES PER HOUR. THE RATE AT WHICH RAIN IS FALLING MAY PRODUCE TEMPORARY FLOODING OF LOW WATER CROSSINGS AND URBAN STREETS IN SOME LOCATIONS. MOTORISTS SHOULD BE ALERT TO THIS POSSIBILITIES. PERSONS ALONG THE PEDERNALES RIVER SHOULD STAY ALERT TO A POSSIBLE SHARP RISE ALONG THE RIVER DUE TO THE HEAVY RAINFALL. A LARGE AREA OF SHOWERS AND THUNDERSTORMS WAS INDICATED WEST OF A LINE FROM WEST OF WACO TO LAKE TRAVIS TO NORTHWEST OF SAN ANTONIO WITH MOVEMENT TOWARDS THE NORTHEAST. ADDITIONAL STATEMENTS WILL BE ISSUED AS CONDITIONS WARRANT.
Local storm report, Jul 17, 4:51 AM CDT, 4 minutes before
STORM REPORT
NATIONAL WEATHER SERVICE SAN ANTONIO TX
450 AM CDT FRI JUN 17 1987
TIME EVENT
110 AM 2.7 INCHES OR RAIN, APPROX 50 MPH WIND GUST AT I-10
STATE HWY 41...KERR COUNTY
203 AM GOLF BALL SIZE HAIL, APPROX 30 TO 40 MPH WIND GUST,
2 INCHES OF RAIN IN 40 MINUTES...NORTHERN KINNEY COUNTY
240 AM SOUTH FORK OF GUADALUPE RIVER:
4 TO 6 INCHES OR RAIN, 15 FT RISE AT CAMP MYSTIC, 8 FT
RISE AT CAMP ARROWHEAD.
NORTH FORK OF GUADALUPE RIVER:
4 FT RISE AT MOORE RANCH.
WATER 3 FT OVER INGRAM DAM...OLD TIMERS SAY CONDITIONS
SAME AS 1978...ALL REPORTS VIA KERRVILLhE DSP...KERR COUNTYThe office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 17, 1:01 AM CDT | Flash Flood Warning | EWX | Kerr, Real | 4 hr |
| Jul 17, 1:58 AM CDT | Severe Thunderstorm Warning | EWX | Kinney | 62 min |
| Jul 17, 4:21 AM CDT | Severe Thunderstorm Warning | EWX | Real, Uvalde | 54 min |
| Jul 17, 6:19 AM CDT | Flash Flood Warning | EWX | Blanco, Gillespie | 3 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.