Alert archive / Texas / Flash Flood Warnings in 2002

Flash Flood Warning 209, NWS Austin/San Antonio, TX

September 8, 2002DeWitt County, Texas

NWS Austin/San Antonio, TX issued this flash flood warning at Sep 8, 2002, 9:15 AM CDT for DeWitt County, Texas. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Sep 8, 2002, 9:15 AM CDT (14:15 UTC)
Expired
Sep 8, 2002, 12:15 PM CDT
In force
3 hr
Issued by
NWS Austin/San Antonio, TX
Area
Counties, with a storm outline in the text

County DeWitt County, TX

The nearest sounding before it

Corpus Christi, TX (KCRP), launched 12:00Z, 2.3 hours before the alert went out and 145 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, Corpus Christi, TX at 12:00Z on 2002-09-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2633 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Corpus Christi, TX at 12:00Z on 2002-09-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 101 square meters per square second.193958Sfc1 km3 km6 km9 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
2633 J/kg
Mixed-layer CIN
-3 J/kg
Mixed-layer LCL
594 m above ground
0-6 km bulk shear
16 kt
0-1 km storm-relative helicity
101 m²/s²
0-3 km storm-relative helicity
212 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 
WGUS54 KEWX 081415
FFWSAT
TXC123-081715-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
913 AM CDT SUN SEP 8 2002

THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS ISSUED A

* FLASH FLOOD WARNING FOR THE FOLLOWING COUNTIES...
  DEWITT

* UNTIL 1215 PM CDT

* AT 910 AM...WEATHER SERVICE DOPPLER RADAR INDICATED VERY HEAVY RAIN
  IN GOLIAD COUNTY MOVING INTO DEWITT COUNTY.  MOVEMENT IS NORTH AT 15
  TO 20 MPH.  RAINFALL RATES OF 1 INCH AN HOUR WILL ACCOMPANY THESE
  STORMS.  THE GROUND IS ALREADY SATURATED BY PREVIOUS RAINS AND
  ADDITIONAL RAINFALL WILL RESULT IN RAPID RUNOFF. 

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY. VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED QUICKLY.
MOVE TO HIGHER GROUND.


LAT...LON 2900 9772 2885 9759 2897 9741 2891 9730
          2911 9703 2937 9726
1 follow-up statement
000 
WGUS74 KEWX 081717
FFSSAT
TXC123-081815-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
1216 PM CDT SUN SEP 8 2002

...THE FLASH FLOOD WARNING FOR DEWITT COUNTY HAS EXPIRED...

NATIONAL WEATHER SERVICE RADAR INDICATED THAT THE HEAVY RAINFALL WAS 
ENDING AND THE FLOOD THREAT WAS DIMINISHING. SOME MINOR FLOODING MAY 
CONTINUE...BUT THE THREAT OF SERIOUS FLOODING HAS ENDED AND THE 
FLASH FLOOD WARNING HAS EXPIRED.

STAY TUNED TO LOCAL MEDIA OUTLETS FOR THE LATEST WEATHER INFORMATION.

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 7, 7:03 PM CDTFlash Flood WarningEWXUvalde117 min
Sep 7, 8:00 PM CDTFlash Flood WarningEWXTravis, Williamson2 hr
Sep 7, 8:47 PM CDTFlash Flood WarningEWXBurnet, Gillespie, Llano118 min
Sep 7, 10:00 PM CDTFlash Flood WarningEWXTravis, Williamson3 hr
Sep 7, 11:03 PM CDTFlash Flood WarningEWXBurnet, Llano117 min
Sep 8, 1:01 AM CDTFlash Flood WarningEWXLlano119 min
Sep 8, 4:18 AM CDTFlash Flood WarningEWXBexar3 hr
Sep 8, 9:59 AM CDTFlash Flood WarningEWXBlanco, Burnet, Llano, Travis, Williamson2 hr
Sep 8, 12:06 PM CDTFlash Flood WarningEWXBurnet, Williamson114 min
Sep 8, 1:42 PM CDTFlash Flood WarningEWXLavaca2 hr
Sep 8, 2:00 PM CDTFlash Flood WarningEWXAtascosa3 hr
Sep 8, 4:53 PM CDTFlash Flood WarningEWXBexar, Karnes, Wilson3 hr

Nearby

Flash Flood Warnings in Texas, 2002Every flash flood warning in 2002

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.