Alert archive / Texas / Flash Flood Warnings in 1987
Flash Flood Warning 23, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this flash flood warning at May 31, 1987, 4:40 PM CDT for Hays County, Texas. It was in force for 3 hr.
The area
The counties it named.
The facts
- Issued
- May 31, 1987, 4:40 PM CDT (21:40 UTC)
- Expired
- May 31, 1987, 7:45 PM CDT
- In force
- 3 hr
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Whole counties
County Hays 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
Victoria Regiona, TX (KVCT), launched 12:00Z, 9.7 hours before the alert went out and 173 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
- 1008 J/kg
- Mixed-layer CIN
- -104 J/kg
- Mixed-layer LCL
- 778 m above ground
- 0-6 km bulk shear
- 19 kt
- 0-1 km storm-relative helicity
- -25 m²/s²
- 0-3 km storm-relative helicity
- 67 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.5
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KAUS 312140 FFWAUS TXC209-010045- BULLETIN - IMMEDIATE BROADCAST REQUESTED/EBS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE AUSTIN TX 440 PM CDT SUN MAY 31 1987 THE NATIONAL WEATHER SERVICE HAS ISSUED A FLASH FLOOD WARNING EFFECTIVE UNTIL 745 PM CDT FOR PEOPLE IN THE FOLLOWING COUNTY OF TEXAS...HAYS AT 430 PM CDT INTENSE THUNDERSTORMS HAS MOVED THROUGH HAYES COUNTY PRODUCING TWO TO THREE INCHES RAINFALL AND MORE IS EXPECTED. DONT LET CHILDREN PLAY IN WATERWAYS SUBJECT TO RAPID RISING OR SWIFT MOVING WATER. 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, May 31, 1:41 PM CDT, 2 hours 59 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE AUSTIN TX 140 PM CDT SUN MAY 31 1987 ...FLASH FLOOD WATCH IN EFFECT THIS AFTERNOON FOR SOUTH CENTRAL TEXAS... AT 130 PM CDT AUSTIN RADAR SHOWED A LINE OF THUNDERSTORMS FROM JUST WEST OF SAN ANTONIO NORTHWARD TO STONEWALL TO LAKE BUCHANAN TO NEAR BROWNWOOD. THIS LINE IS MOVING TO THE EAST AT 20 TO 25 MPH AND WILL BE MOVING ACROSS THE HIGHLAND LAKES FOR THE NEXT TWO OR THREE HOURS. SOME OF THESE THUNDERSTORMS MAY BE ACCOMPANIED BY STRONG GUSTY WINDS... SEVERE LIGHTNING...HEAVY RAINS AND POSSIBLE SMALL HAIL. BOATERS AND THOSE ON OUTINGS SHOULD BE PREPARED TO TSKE COVER AND MOVE TO PLACES OF SAFETY QUICKLY IF THE NEED ARISES. SMALL STREAMS ARE ALREADY BANKFULL AND FLOODING OF LOW WATER CROSSINGS WILL BE LIKELY. MOTORISTS ARE REMINDED THAT MOSTS DEATHS IN FLASH FLOODING ARE CAUSED BY DRIVING INTO LOW WATER CROSSINGS AND SWIFT FLOWING SMALL STREAMS...SO BE CAREFUL. KEEP TUNED TO NOAA WEATHER RADIO OR YOUR RADIO OR TV FOR LATEST INFORMATION.
Special weather statement, May 31, 2:45 PM CDT, 1 hour 55 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE AUSTIN TX 245 PM CDT SUN MAY 31 1987 ...FLASH FLOOD WATCH IN EFFECT THIS AFTERNOON FOR SOUTH CENTRAL TEXAS... AT 240 PM CDT AUSTIN RADAR SHOWED A LINE OF THUNDERSTORMS FROM JUST WEST OF GATESVILLE SOUTHWARD TO BURNET TO SAN ANTONIO. THIS LINE IS MOVING TO THE EAST AT 20 TO 25 MPH AND WILL BE MOVING INTO AUSTIN WITHIN AN HOUR OR SO. THESE THUNDERSTORMS LIKELY CONTAIN STRONG GUSTY WINDS... SEVERE LIGHTNING...HEAVY RAINS AND POSSIBLE SMALL HAIL. BOATERS AND THOSE ON OUTINGS SHOULD BE PREPARED TO TAKE COVER AND MOVE TO PLACES OF SAFETY QUICKLY IF THE NEED ARISES. SMALL STREAMS ARE ALREADY BANKFULL AND FLOODING OF LOW WATER CROSSINGS WILL BE LI KELY. MOTORISTS ARE REMINDED THAT MOST DEATHS IN FLASH FLOODING ARE CAUSED BY DRIVING INTO LOW WATER CROSSINGS AND SWIFT FLOWING SMALL STREAMS...SO BE CAREFUL. KEEP TUNED TO NOAA WEATHER RADIO OR YOUR RADIO OR TV FOR LATEST INFORMATION.
Special weather statement, May 31, 4:10 PM CDT, 30 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE AUSTIN TX 4 PM CDT SUN MAY 31 1987 ...FLASH FLOOD WATCH IN EFFECT THIS AFTERNOON FOR SOUTH CENTRAL TEXAS... AT 355 PM CDT AUSTIN RADAR SHOWED A LINE OF STRONG THUNDERSTORMS 15 TO 20 MILES WIDE PRODUCING HEAVY RAINFALL AND GUSTY WINDS FROM NORTH OF LAKE TRAVIS TO SAN MARCOS TO WEST OF LULING MOVING TOWARDS THE EAST AT 20 MPH. THESE THUNDERSTORMS MAY PRODUCE SMALL HAIL AND SEVERE LIGHTNING. BOATqERS....ON THE LAKES OR RIVER SHOULD HEAD FOR SHORE NOW.... SMALL STREAMS ARE ALREADY BANKFULL AND FLOODING OF LOW WATER CROSSINGS IS LIKELY. MOTORISTS SHOULD NOT ATTEMPT TO CROSS WATER COVERED ROADWAYS
The office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 31, 9:15 AM CDT | Flash Flood Warning | EWX | Kinney | 2 hr |
| May 31, 9:15 AM CDT | Severe Thunderstorm Warning | EWX | Kinney | 60 min |
| May 31, 11:32 AM CDT | Flash Flood Warning | EWX | Kinney | 3 hr |
| May 31, 12:05 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.