Alert archive / Texas / Flash Flood Warnings in 1987
Flash Flood Warning 79, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this flash flood warning at Jun 12, 1987, 10:17 PM CDT for 4 counties in Texas. It was in force for 3 hr.
The area
The counties it named.
The facts
- Issued
- Jun 12, 1987, 10:17 PM CDT (03:17 UTC)
- Expired
- Jun 13, 1987, 1:15 AM CDT
- In force
- 3 hr
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Whole counties
Counties Burnet County, TX, Hays County, TX, Travis County, TX, Williamson 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
Stephenville/Cla, TX (KSEP), launched 00:00Z, 3.3 hours before the alert went out and 197 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
- 822 J/kg
- Mixed-layer CIN
- -18 J/kg
- Mixed-layer LCL
- 632 m above ground
- 0-6 km bulk shear
- 24 kt
- 0-1 km storm-relative helicity
- -20 m²/s²
- 0-3 km storm-relative helicity
- -7 m²/s²
- Significant tornado parameter
- -0.1
- Supercell composite
- -0.7
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KAUS 130317 FFWAUS TXC031-053-171-209-453-491-130615- BULLETIN - IMMEDIATE BROADCAST REQUESTED/EBS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE AUSTIN TX 1017 PM CDT FRI JUN 12 1987 THE NATIONAL WEATHER SERVICE HAS ISSUED A FLASH FLOOD WARNING EFFECTIVE UNTIL 115 AM CDT FOR PEOPLE IN THE FOLLOWING COUNTIES OF TEXAS...BLANCO...SOUTHERN BURNET...GILLESPIE...NORTHERN HAYS... WESTERN TRAVIS AND WILLIAMSON AT 1015 PM CDT INTENSE THUNDERSTORMS WERE CREATING MAJOR FLOODING OVER THE PREVIOUS MENTIONED COUNTIES. ROADS IN AND AROUND MARBLE FALLS...GRANITE SHOALS AND LIBERTY HILL HAVE BECOME IMPASSABLE. FLOOD WATERS WERE REPORTED AS NEAR 5 FEET DEEP IN PARTS OF MARBLE FALLS. ] THIS IS A DANGEROUS SITUATION. TAKE APPROPRIATE ACTION. REMEMBER THAT DEATHS DURING FLASH FLOODING ARE OFTEN RELATED TO MOTORISTS DRIVING THROUGH FLOODED LOW WATER CROSSINGS.
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 12, 9:15 PM CDT, 1 hour 2 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE AUSTIN TX 910 PM CDT FRI 12 JUN 1987 ...A LINE OF INTENSE THUNDERSTORMS IS MOVING SOUTHEASTWARD AT 15 MPH THROUGH THE RAIN-SOAKED AND FLOODED HILL COUNTRY... JUST AFTER 9 PM...RADAR SHOWED A 25 MILE WIDE LINE...EXTENDING FROM TEMPLE AND KILLEEN THROUGH BERTRAM...MARBLE FALLS AND FREDERICKSBURG TO NEAR HARPER. MANY SPOTS ALONG THAT LINE INDICATED RAINFALL RATES OF ONE TO TWO INCHES PER HOUR. ALMOST ALL HILL COUNTRY STREAMS...CREEKS AND RIVERS REMAIN AT OR NEAR FLOOD STAGE. IT WILL ONLY TAKE AN HOUR OR SO OF HEAVY RAIN TO QUICKLY CAUSE ADDITIONAL FLASH FLOODING IN THOSE SPOTS. PERSONS IN CENTRAL TEXAS...ESPECIALLY THE HILL COUNTRY FLOOD PRONE AREAS SHOULD TAKE PRECAUTIONS NOW FOR LOCALIZED FLASH FLOODING. OTHER STATEMENTS WILL BE ISSUED LATER ON THIS LINE OF INTENSE THUNDER STORMS.
Special weather statement, Jun 12, 9:29 PM CDT, 48 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DEL RIO TX 929 PM CDT FRI JUN 12 1987 AT 925 PM CDT RADAR INDICATED A LINE OF THUNDERSTORMS FROM JUST SOUTH OF OZONA AND EXTENDED THROUGH THE NORTHEAST PART OF VAL VERDE COUNTY. THE STRONGEST THUNDERSTORM WAS LOCATED ALONG HIGHWAY 163 JUST NORTH OF THE VAL VERDE COUNTY LINE. THE STORMS WERE MOVING EAST AT 10 MILES AN HOUR. THE THUNDERSTORMS ARE SLOW MOVING AND WILL LIKELY CAUSE HEAVY RAIN. MOTORISTS TRAVELING ALONG HIGHWAY 277 AND 163 IN NORTHERN VAL VERDE COUNTY SHOULD BE ALERT FOR REDUCED VISIBILITY...FLOODING OF LOW LYING AREAS AND LOW WATER CROSSINGS. SMALL HAIL...HEAVY RAIN...STRONG GUSTY WINDS AND FREQUENT DANGEROUS LIGHTNING ARE L)IKELY WITH THESE STORMS.
Special weather statement, Jun 12, 9:59 PM CDT, 18 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE AUSTIN TX 955 PM CDT FRI 12 JUN 1987 A LINE OF SCATTERED THUNDERSTORMS HAS MOVED INTO THE TEXAS HILL COUNTRY. AT 945 PM CDT THE LINE EXTENDS FROM WEST TO EAST FROM NORTHEAST VAL VERDE COUNTY EAST THROUGH NORTHERN EDWARDS COUNTY AND KERR COUNTY THEN NORTHEAST THROUGH THE MARBLE FALLS AREA. THE THUNDER STORMS WERE MOVING TO THE SOUTHEAST AT AROUND 10 MPH AND APPEARED TO BE LOSING INTENSITY. FREQUENT LIGHTNING AND BRIEF HEAVY RAIN CAN BE EXPECTED FROM THESE THUNDERSTORMS. DUE TO THE SATURATED GROUND IN THE HILL COUNTRY FROM RAINS OF THE PAST SEVERAL DAYS...SOME LOW WATER CROSSINGS AND LOW LYING AREAS COULD BECOME FLOODED AGAIN AS THESE STORMOS PASS. MOTORISTS DRIVING THROUGH THE TEXAS HILL COUNTRY TONIGHT SHOULD EXERCISE CAUTION. OTHER STATEMENTS OR WARNINGS WILL BE ISSUED AS NEEDED.
Special weather statement, Jun 12, 10:03 PM CDT, 14 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE AUSTIN TX 1000 PM CDT FRI 12 JUN 1987 ...A LINE OF INTENSE THUNDERSTORMS IS MOVING SOUTHEASTWARD AT 15 MPH THROUGH THE RAIN-SOAKED AND FLOODED HILL COUNTRY... JUST BEFORE 10 PM...RADAR SHOWED A 25 MILE WIDE LINE...EXTENDING FROM NEAR CAMERON TO NORTH OF GEORGETOWN THROUGH THE LIBERTY HILL AREA TO NEAR JOHNSON CITY. MANY SPOTS ALONG THAT LINE INDICATED VERY HEAVY RAINFALL AS THE LINE MOVES SOUTHEAST THROUGH THE AREA. ALMOST ALL HILL COUNTRY STREAMS...CREEKS AND RIVERS REMAIN AT OR NEAR FLOOD STAGE. IT WILL ONLY TAKE AN HOUR OR SO OF HEAVY RAIN TO QUICKLY CAUSE ADDITIONAL FLASH FLOODING IN THOSE SPOTS. PERSONS IN CENTRAL TEXAS...ESPECIARLLY THE HILL COUNTRY FLOOD PRONE AREAS SHOULD TAKE PRECAUTIONS NOW FOR LOCALIZED FLASH FLOODING. OTHER STATEMENTS WILL BE ISSUED LATER ON THIS LINE OF INTENSE THUNDER STORMS.
The office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 12, 10:17 PM CDT | Flash Flood Warning | EWX | Blanco, Gillespie | 3 hr |
| Jun 13, 7:20 AM CDT | Flash Flood Warning | EWX | Bexar, Medina | 4 hr |
| Jun 13, 8:21 AM CDT | Flash Flood Warning | EWX | Atascosa | 3 hr |
| Jun 13, 11:15 AM CDT | Flash Flood Warning | EWX | McMullen | 2 hr |
| Jun 13, 11:23 AM CDT | Flash Flood Warning | EWX | Bastrop, Caldwell | 3 hr |
| Jun 13, 12:06 PM CDT | Flash Flood Warning | EWX | Kinney, Uvalde | 3 hr |
| Jun 13, 12:16 PM CDT | Flash Flood Warning | EWX | Travis | 3 hr |
| Jun 13, 1:46 PM CDT | Flash Flood Warning | EWX | Kerr, Real | 3 hr |
| Jun 13, 2:28 PM CDT | Flash Flood Warning | EWX | Blanco, Burnet, Travis | 3 hr |
| Jun 13, 2:28 PM CDT | Flash Flood Warning | EWX | Williamson | 3 hr |
| Jun 13, 5:05 PM CDT | Flash Flood Warning | EWX | Val Verde | 4 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.