Alert archive / Texas / Flash Flood Warnings in 2002

Flash Flood Warning 203, NWS Austin/San Antonio, TX

September 7, 2002Travis County, Williamson County, Texas

NWS Austin/San Antonio, TX issued this flash flood warning at Sep 7, 2002, 8:00 PM CDT for Travis County, Williamson County, Texas. It was in force for 2 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 7, 2002, 8:00 PM CDT (01:00 UTC)
Expired
Sep 7, 2002, 10:00 PM CDT
In force
2 hr
Issued by
NWS Austin/San Antonio, TX
Area
Counties, with a storm outline in the text

Counties Travis County, TX, Williamson County, TX

The nearest sounding before it

Fort Worth, TX (KFWD), launched 00:00Z, 1.0 hours before the alert went out and 264 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, Fort Worth, TX at 00:00Z on 2002-09-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 622 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Fort Worth, TX at 00:00Z on 2002-09-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -2 square meters per square second.1939Sfc1 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
622 J/kg
Mixed-layer CIN
-10 J/kg
Mixed-layer LCL
1439 m above ground
0-6 km bulk shear
7 kt
0-1 km storm-relative helicity
-2 m²/s²
0-3 km storm-relative helicity
47 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 080100
FFWSAT
TXC453-491-080300-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
757 PM CDT SAT SEP 7 2002

THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS ISSUED A

* FLASH FLOOD WARNING FOR THE FOLLOWING COUNTIES...
  WILLIAMSON
  TRAVIS

* UNTIL 1000 PM CDT

* AT 757 PM...WEATHER SERVICE DOPPLER RADAR INDICATED ONE TO TWO
  INCH RAINFALL OCCURRING ACROSS TRAVIS AND WILLIAMSON
  COUNTIES. ADDITIONAL RAINS ARE EXPECTED THROUGH THE NIGHT.

EXCESSIVE RUNOFF FROM THESE STORMS WILL CAUSE FLASH FLOODING OF
SMALL CREEKS...STREAMS...HIGHWAYS...UNDERPASSES AND COUNTRY ROADS.


LAT...LON 3037 9814 3007 9774 3046 9742 3052 9720
          3071 9731 3087 9781

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, 8:47 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, 9:15 AM CDTFlash Flood WarningEWXDeWitt3 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.