Alert archive / Texas / Flash Flood Warnings in 1987
Flash Flood Warning 25, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this flash flood warning at May 31, 1987, 9:26 PM CDT for Caldwell County, Hays County, Texas. It was in force for 3 hr.
The area
The counties it named.
The facts
- Issued
- May 31, 1987, 9:26 PM CDT (02:26 UTC)
- Expired
- Jun 1, 1987, 12:30 AM CDT
- In force
- 3 hr
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Whole counties
Counties Caldwell County, TX, 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 00:00Z, 2.4 hours before the alert went out and 151 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
- 1686 J/kg
- Mixed-layer CIN
- -1 J/kg
- Mixed-layer LCL
- 893 m above ground
- 0-6 km bulk shear
- 30 kt
- 0-1 km storm-relative helicity
- -7 m²/s²
- 0-3 km storm-relative helicity
- 27 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KAUS 010226 FFWAUS TXC055-209-010530- BULLETIN - IMMEDIATE BROADCAST REQUESTED/EBS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE AUSTIN TX 926 PM CDT SUN MAY 31 1987 THE NATIONAL WEATHER SERVICE HAS ISSUED A FLASH FLOOD WARNING EFFECTIVE UNTIL 1230 AM CDT FOR PEOPLE IN THE FOLLOWING COUNTIES OF TEXAS...CALDWELL AND HAYS HEAVY RAINS ARE AGAIN MOVING INTO HAYS COUNTY. THE SHERIFFS OFFICE REPORTS MANY LOW WATER CROSSINGS AND ROADS ALREADY FLOODED. THE FLASH FLOOD WARNING ISSUED EARLIER FOR CALDWELL COUNTY IS NOW BEING EXTENDED AS FLOODING CONTINUES AND MORE HEAVY RAINS ARE MOVING THROUGH AND TOWARDS CALDWELL COUNTY. 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. MOTORISTS SHOULD USE EXTREME CAUSTJION THROUGH THESE COUNTIES AS A DANGEROUS SITUATION EXISTS. ALL LOW WATER CROSSINGS THROUGH THE HILL COUNTY WEST OF AUSTIN MAY BE AT THE FLOOD STAGE...DO NOT ATTEMPT TO CROSS HIGH WATER.
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, 4:10 PM CDT, 5 hours 16 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
Special weather statement, May 31, 7:34 PM CDT, 1 hour 52 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE AUSTIN TX
730 PM CDT SUN MAY 31 1987
...LOW WATER CROSSINGS TO THE WEST OF AUSTIN ARE BECOMING FLOODED...
RAINFALL REPORTS OF UP TO THREE INCHES NEAR PACE BEND PARK ON THE TRAVIS
...BURNET COUNTY LINE THROUGH THE AFTERNOON HAVE CAUSED SOME LOW WATER
WATER CROSSINGS TO BECOME FLOODED. STEADY MOSTLY LIGHT RAIN WILL CONTINUE
OVER THE HILL COUNTRY FOR THE NEXT FEW HOURS AND THIS CAN ONLY ADD TO
THIS FLOODING PROBLEM THROUGH THE HILL COUNTY.
MOTORISTS SHOULD AVOID CROSSING ROADWAYS THE ARE WATER COVERED.
...REMEMBER THE LIVE YOU SAVE MAYBE OUR OWN...The office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 31, 7:10 PM CDT | Flash Flood Warning | EWX | Caldwell | 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.