Alert archive / Texas / Flash Flood Warnings in 2001

Flash Flood Warning 100, NWS Austin/San Antonio, TX

November 15, 200119 counties in Texas

NWS Austin/San Antonio, TX issued this flash flood warning at Nov 15, 2001, 5:00 PM CST for 19 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 the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.

The facts

Issued
Nov 15, 2001, 5:00 PM CST (23:00 UTC)
Expired
Nov 15, 2001, 9:00 PM CST
In force
4 hr
Issued by
NWS Austin/San Antonio, TX
Area
Whole counties; the outline is the Mesonet’s reconstruction

Counties Atascosa County, TX, Bastrop County, TX, Bexar County, TX, Blanco County, TX, Burnet County, TX, Caldwell County, TX, Comal County, TX, DeWitt County, TX, Fayette County, TX, Gonzales County, TX, Guadalupe County, TX, Hays County, TX, Karnes County, TX, Kendall County, TX, Lavaca County, TX, Lee County, TX, Travis County, TX, Williamson County, TX, Wilson County, TX

The radar

The Austin/San Antonio radar (KEWX), 39 km from the middle of the area, began a volume at 23:02 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Corpus Christi, TX (KCRP), launched 12:00Z, 11.0 hours before the alert went out and 219 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 2001-11-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2181 joules per kilogram.LCLEL10008507005003002001001 km2 km3 km6 km9 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Corpus Christi, TX at 12:00Z on 2001-11-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 115 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
2181 J/kg
Mixed-layer CIN
-2 J/kg
Mixed-layer LCL
580 m above ground
0-6 km bulk shear
37 kt
0-1 km storm-relative helicity
115 m²/s²
0-3 km storm-relative helicity
160 m²/s²
Significant tornado parameter
0.9
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 152301
FFWSAT

TXC013-021-029-031-053-055-091-123-149-177-187-209-255-259-285-287-
453-491-493-160300-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
5 PM CST THU NOV 15 2001

THE NATIONAL WEATHER SERVICE HAS ISSUED A

* FLASH FLOOD WARNING FOR THE FOLLOWING COUNTIES...
  BURNET
  WILLIAMSON
  TRAVIS
  LEE
  BLANCO
  BASTROP
  HAYS
  FAYETTE
  KENDALL
  CALDWELL
  COMAL
  GUADALUPE
  GONZALES
  BEXAR
  LAVACA
  WILSON
  DEWITT
  ATASCOSA
  KARNES

* UNTIL 9 PM CST

HEAVY RAINS CONTINUE TO MOVE OVER SATURATED GROUND OVER THE I35 
CORRIDOR.  COUNTIES EAST AND SOUTH OF AUSTIN WHICH HAVE MISSED HEAVY 
RAINS FOR THE MOST PART THUS FAR ARE EXPECTED TO RECEIVE SIZEABLE 
AMOUNTS OVER THE NEXT FEW HOURS.  THUNDERSTORMS DEVELOPING NORTH OF 
CORPUS CHRISTI ARE MOVING INTO THIS AREA AND ARE PRODUCING RAINFALL 
RATES UP TO 3 TO 4 INCHES PER HOUR.  LOW WATER CROSSINGS WILL BE 
DANGEROUS THROUGH THE EVENING HOURS.      

IF FLASH FLOODING IS OBSERVED ACT QUICKLY. MOVE UP TO HIGHER GROUND 
TO ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS SUBJECT TO FLOODING 
WHEN WATER BEGINS RISING.

A FLASH FLOOD WARNING MEANS THAT FLOODING IS OCCURRING OR IS
IMMINENT. MOST FLASH FLOOD DEATHS OCCUR IN AUTOMOBILES. DO NOT
ATTEMPT TO CROSS BRIDGES...DIPS...OR OTHER LOW SPOTS IF WATER COVERS
THE ROADWAY. NEVER TRY TO CROSS A FLOWING STREAM...EVEN A SMALL
ONE...ON FOOT. TO ESCAPE RISING WATER MOVE UP TO HIGHER GROUND.


LAT...LON 2987 9869 2880 9867 2877 9831 2897 9748
          2939 9694 2939 9693 2952 9699 2952 9699
          2994 9678 3035 9701 3059 9743 3086 9816

The office that day

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

IssuedProductOfficeCountiesLasted
Nov 14, 6:46 PM CSTFlash Flood WarningEWXBlanco, Travis2 hr
Nov 14, 7:15 PM CSTSevere Thunderstorm WarningEWXUvalde60 min
Nov 14, 7:50 PM CSTSevere Thunderstorm WarningEWXBandera, Medina55 min
Nov 14, 8:32 PM CSTSevere Thunderstorm WarningEWXKinney, Maverick73 min
Nov 14, 9:53 PM CSTFlash Flood WarningEWXAtascosa67 min
Nov 14, 11:47 PM CSTSevere Thunderstorm WarningEWXBandera73 min
Nov 15, 12:23 AM CSTSevere Thunderstorm WarningEWXZavala52 min
Nov 15, 2:54 AM CSTFlash Flood WarningEWXBandera, Kerr, Medina, Real2 hr
Nov 15, 3:47 AM CSTSevere Thunderstorm WarningEWXReal58 min
Nov 15, 4:52 AM CSTTornado WarningEWXKendall38 min
Nov 15, 5:21 AM CSTFlash Flood WarningEWXEdwards, Val Verde3 hr
Nov 15, 6:07 AM CSTFlash Flood WarningEWXBexar, Kendall3 hr
Nov 15, 6:21 AM CSTFlash Flood WarningEWXGillespie3 hr
Nov 15, 6:30 AM CSTFlash Flood WarningEWXKerr3 hr
Nov 15, 6:54 AM CSTFlash Flood WarningEWXBlanco, Burnet, Llano3 hr
Nov 15, 8:35 AM CSTFlash Flood WarningEWXEdwards3 hr
Nov 15, 9:20 AM CSTFlash Flood WarningEWXAtascosa, Bandera, Bexar, Blanco, Burnet, Comal and 14 more4 hr
Nov 15, 9:32 AM CSTTornado WarningEWXBlanco, Hays43 min
Nov 15, 10:19 AM CSTTornado WarningEWXBlanco, Hays, Travis41 min
Nov 15, 10:55 AM CSTTornado WarningEWXTravis50 min
Nov 15, 11:37 AM CSTTornado WarningEWXWilliamson53 min
Nov 15, 12:40 PM CSTTornado WarningEWXDeWitt, Karnes50 min
Nov 15, 12:55 PM CSTFlash Flood WarningEWXBandera, Kerr, Medina2 hr
Nov 15, 1:06 PM CSTFlash Flood WarningEWXBexar, Blanco, Burnet, Comal, Gillespie, Hays and 4 more4 hr
Nov 15, 1:29 PM CSTTornado WarningEWXGonzales, Karnes61 min
Nov 15, 2:29 PM CSTTornado WarningEWXGonzales61 min
Nov 15, 2:58 PM CSTTornado WarningEWXHays, Travis62 min
Nov 15, 3:41 PM CSTTornado WarningEWXComal, Hays34 min
Nov 15, 3:57 PM CSTTornado WarningEWXTravis, Williamson63 min
Nov 15, 5:04 PM CSTTornado WarningEWXTravis, Williamson56 min
Nov 15, 5:29 PM CSTTornado WarningEWXComal, Guadalupe61 min
Nov 15, 5:50 PM CSTTornado WarningEWXTravis, Williamson70 min

Nearby

Flash Flood Warnings in Texas, 2001Every flash flood warning in 2001

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; radar from the NEXRAD Level II archive.