Alert archive / Texas / Flash Flood Warnings in 2002

Flash Flood Warning 240, NWS Austin/San Antonio, TX

October 9, 20026 counties in Texas

NWS Austin/San Antonio, TX issued this flash flood warning at Oct 9, 2002, 1:27 AM CDT for 6 counties in Texas. It was in force for 4 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
Oct 9, 2002, 1:27 AM CDT (06:27 UTC)
Expired
Oct 9, 2002, 5:15 AM CDT
In force
4 hr
Issued by
NWS Austin/San Antonio, TX
Area
Counties, with a storm outline in the text

Counties Bastrop County, TX, Caldwell County, TX, Fayette County, TX, Gonzales County, TX, Guadalupe County, TX, Wilson County, TX

The nearest sounding before it

Corpus Christi, TX (KCRP), launched 00:00Z, 6.5 hours before the alert went out and 208 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 00:00Z on 2002-10-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1970 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 00:00Z on 2002-10-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 70 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
1970 J/kg
Mixed-layer CIN
-8 J/kg
Mixed-layer LCL
957 m above ground
0-6 km bulk shear
28 kt
0-1 km storm-relative helicity
70 m²/s²
0-3 km storm-relative helicity
109 m²/s²
Significant tornado parameter
0.7
Supercell composite
5.8

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WGUS54 KEWX 090627
FFWSAT
TXC021-055-149-177-187-493-091015-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
126 AM CDT WED OCT 9 2002

THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS ISSUED A

* FLASH FLOOD WARNING FOR THE FOLLOWING COUNTIES...
  BASTROP
  FAYETTE
  CALDWELL
  GUADALUPE
  GONZALES
  WILSON

* UNTIL 515 AM CDT

* AT 126 AM...WEATHER SERVICE DOPPLER RADAR INDICATED A NEAR SOLID   
  AREA OF THUNDERSTORMS...SOME WITH VERY HEAVY RAIN...MOVING 
  NORTHEAST AT 15 MPH ACROSS THE WARNED AREA.

THUNDERSTORMS HAVE BEEN TRAINING OVER THE SAME AREAS FOR THE PAST 
SEVERAL HOURS AND SHOW NO SIGNS OF WEAKENING. THE FOCUS FOR THE 
HEAVIEST RAINS CONTINUES ALONG AND 20 MILES EITHER SIDE OF A SAN 
ANTONIO TO LA GRANGE LINE. 

DOPPLER RADAR HAS ALREADY ESTIMATED RAIN TOTALS BETWEEN 5 AND 6 
INCHES OVER THE WARNED AREA. AN ADDITIONAL 2 TO 4 INCHES WILL BE 
POSSIBLE OVER THESE SAME AREAS WHICH WILL AGGRAVATE AN ALREADY 
SERIOUS FLOODING SITUATION. 

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE 
DANGERS OF FLOODS AND FLASH FLOODS. IF FLASH FLOODING IS OBSERVED ACT
QUICKLY. MOVE TO HIGHER GROUND TO ESCAPE FLOOD WATERS. DO NOT STAY IN
AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING.

LAT...LON 2921 9830 2912 9823 2984 9682 3036 9732 2959 9822 2944 9809

The office that day

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

IssuedProductOfficeCountiesLasted
Oct 8, 8:00 PM CDTFlash Flood WarningEWXGuadalupe4 hr
Oct 8, 8:47 PM CDTFlash Flood WarningEWXAtascosa, Wilson3 hr
Oct 8, 9:22 PM CDTSevere Thunderstorm WarningEWXAtascosa, Wilson53 min
Oct 8, 9:32 PM CDTFlash Flood WarningEWXCaldwell4 hr
Oct 8, 10:32 PM CDTFlash Flood WarningEWXBexar3 hr
Oct 8, 10:59 PM CDTFlash Flood WarningEWXKinney, Val Verde3 hr
Oct 8, 11:51 PM CDTFlash Flood WarningEWXGuadalupe114 min
Oct 9, 1:02 AM CDTFlash Flood WarningEWXBandera, Bexar, Kinney, Maverick, Medina, Real and 1 more4 hr
Oct 9, 3:17 AM CDTFlash Flood WarningEWXAtascosa3 hr
Oct 9, 4:57 AM CDTFlash Flood WarningEWXCaldwell, Gonzales, Guadalupe, Wilson2 hr
Oct 9, 10:16 AM CDTFlash Flood WarningEWXFrio, Zavala3 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.