Alert archive / Texas / Flash Flood Warnings in 1987

Flash Flood Warning 55, NWS Austin/San Antonio, TX

June 4, 1987Burnet County, Williamson County, Texas

NWS Austin/San Antonio, TX issued this flash flood warning at Jun 4, 1987, 8:46 AM CDT for Burnet County, Williamson County, Texas. It was in force for 3 hr.

The area

The counties it named.

The facts

Issued
Jun 4, 1987, 8:46 AM CDT (13:46 UTC)
Expired
Jun 4, 1987, 11:45 AM CDT
In force
3 hr
Issued by
NWS Austin/San Antonio, TX
Area
Whole counties

Counties Burnet 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 12:00Z, 1.8 hours before the alert went out and 168 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, Stephenville/Cla, TX at 12:00Z on 1987-06-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Stephenville/Cla, TX at 12:00Z on 1987-06-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 130 square meters per square second.1939Sfc1 km3 km6 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
705 m above ground
0-6 km bulk shear
16 kt
0-1 km storm-relative helicity
130 m²/s²
0-3 km storm-relative helicity
122 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 KAUS 041346
FFWAUS
TXC053-491-041645-

BULLETIN - IMMEDIATE BROADCAST REQUESTED/EBS ACTIVATION REQUESTED 
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE AUSTIN TX
846 AM CDT THU JUN 4 1987

THE NATIONAL WEATHER SERVICE HAS ISSUED A FLASH FLOOD WARNING 
EFFECTIVE UNTIL 1145 AM CDT FOR PEOPLE IN THE FOLLOWING COUNTIES OF

TEXAS...BURNET AND WILLIAMSON

AT 845 AM CDT A BAND OF THUNDERSTORMS WITH VERY HEAVY RAIN
WAS TRACKING ACROSS WILLIAMSONCOUNTY AND INTO BNURNET COUNTY.
THE HEAVIEST RAIN WAS FROM EAST OF GEORGETOWN TO LAKE
BUCHANAN.

REMEMBER THAT DEATHS DURING FLASH FLOODING ARE OFTEN RELATED TO
MOTORISTS DRIVING THROUGH FLOODED LOW WATER CROSSINGS.

The office that day

Everything else NWS Austin/San Antonio, TX issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 4, 1:53 AM CDTFlash Flood WarningEWXGonzales3 hr
Jun 4, 3:10 AM CDTFlash Flood WarningEWXKendall110 min
Jun 4, 3:32 AM CDTFlash Flood WarningEWXCaldwell3 hr
Jun 4, 4:24 AM CDTFlash Flood WarningEWXTravis3 hr
Jun 4, 4:44 AM CDTFlash Flood WarningEWXLavaca2 hr
Jun 4, 5:02 AM CDTFlash Flood WarningEWXGonzales4 hr
Jun 4, 6:35 AM CDTFlash Flood WarningEWXLavaca2 hr
Jun 4, 7:31 AM CDTFlash Flood WarningEWXCaldwell, Hays, Travis6 hr
Jun 4, 8:30 AM CDTFlash Flood WarningEWXLavaca2 hr
Jun 4, 8:47 AM CDTFlash Flood WarningEWXGonzales4 hr
Jun 4, 11:47 AM CDTFlash Flood WarningEWXBexar3 hr
Jun 4, 2:30 PM CDTSevere Thunderstorm WarningEWXCalhoun60 min
Jun 4, 4:08 PM CDTFlash Flood WarningEWXAtascosa, Frio4 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.