Alert archive / Texas / Flash Flood Warnings in 2002

Flash Flood Warning 104, NWS Austin/San Antonio, TX

July 4, 200214 counties in Texas

NWS Austin/San Antonio, TX issued this flash flood warning at Jul 4, 2002, 3:53 PM CDT for 14 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
Jul 4, 2002, 3:53 PM CDT (20:53 UTC)
Expired
Jul 4, 2002, 8:00 PM CDT
In force
4 hr
Issued by
NWS Austin/San Antonio, TX
Area
Counties, with a storm outline in the text

Counties Atascosa County, TX, Bandera County, TX, Bexar County, TX, Blanco County, TX, Burnet County, TX, Comal County, TX, Frio County, TX, Gillespie County, TX, Karnes County, TX, Kendall County, TX, Kerr County, TX, Llano County, TX, Medina County, TX, Wilson County, TX

The radar

The Austin/San Antonio radar (KEWX), 57 km from the middle of the area, began a volume at 20:57 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

Del Rio, TX (KDRT), launched 12:00Z, 8.9 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, Del Rio, TX at 12:00Z on 2002-07-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1375 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, Del Rio, TX at 12:00Z on 2002-07-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -4 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
1375 J/kg
Mixed-layer CIN
-5 J/kg
Mixed-layer LCL
533 m above ground
0-6 km bulk shear
18 kt
0-1 km storm-relative helicity
-4 m²/s²
0-3 km storm-relative helicity
44 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.2

Open this sounding in Storm Lab

The text

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

000 
WGUS54 KEWX 042053
FFWSAT
TXC013-019-029-031-053-091-163-171-255-259-265-299-325-493-050100-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
354 PM CDT THU JUL 4 2002

THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS ISSUED A

* FLASH FLOOD WARNING FOR THE FOLLOWING COUNTIES...
  BURNET
  LLANO
  GILLESPIE
  BLANCO
  KERR
  KENDALL
  COMAL
  BANDERA
  BEXAR
  MEDINA
  WILSON
  ATASCOSA
  KARNES
  FRIO

* UNTIL 800 PM CDT

* AT 353 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A 
PERSISTENT BROAD BAND OF SHOWERS AND THUNDERSTORMS WITH MODERATE TO 
HEAVY RAINFALL FROM SOUTH OF DILLEY AND KENEDY TO NORTH OF MASON AND 
BURNET.  

THE RAIN WAS MOVING NORTH AT 15 MPH.  THE BAND WAS NEARLY STATIONARY 
AND WAS TRAINING OVER THE SAME AREAS AS EARLIER RAINS.

ESTIMATED RAINFALL RATES OF 1 TO 2.5 INCHES PER HOUR WERE INDICATED 
AND TOTALS CONTINUE TO ACCUMULATE IN THE WARNED AREA.  THIS WILL 
CAUSE RIVERS AND STREAMS TO REMAIN IN FLOOD MAINTAINING FLASH FLOOD 
CONDITIONS IN NUMEROUS LOCATIONS IN THE WARNED AREA.

THIS IS A DANGEROUS LIFE THREATENING SITUATION.  IF YOU ARE NEAR 
STREAMS...RIVERS AND LOW LYING AREAS AS RAIN PASSES MOVE TO HIGHER 
GROUND IMMEDIATELY AS RUNOFF WILL BE RAPID.

A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING. 
IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER GROUND IMMEDIATELY. 
RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE 
PRECAUTIONS TO PROTECT LIFE AND PROPERTY. DO NOT ATTEMPT TO CROSS 
SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR BY 
AUTOMOBILE. IF YOUR VEHICLE STALLS, ABANDON IT IMMEDIATELY AND SEEK 
HIGHER GROUND.  CAMPERS SHOULD EVACUATE TO HIGHER GROUND.  

LAT...LON 2869 9941 2867 9834 2879 9813 2881 9761
          2964 9841 3012 9837 3100 9794 3091 9893
          2998 9932
3 follow-up statements
000 
WGUS74 KEWX 042335
FFSSAT
TXC019-029-091-163-259-325-050000-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
633 PM CDT THU JUL 4 2002

...THE FLASH FLOOD WARNING FOR KENDALL...COMAL...BANDERA...BEXAR...
MEDINA AND FRIO COUNTIES HAS BEEN CANCELLED...

NATIONAL WEATHER SERVICE RADAR INDICATED THE RAINFALL WAS ENDING 
ACROSS THE WARNED AREA...AND THE FLASH FLOOD THREAT HAD ENDED.
SOME RUNOFF MAY CONTINUE...BUT THE THREAT OF SERIOUS FLASH FLOODING 
HAS ENDED...AND THE FLASH FLOOD WARNING HAS BEEN CANCELLED.

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE WATER COVERS THE ROAD.
VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED QUICKLY. MOVE TO
HIGHER GROUND. STAY TUNED TO LOCAL MEDIA OUTLETS FOR THE LATEST
WEATHER INFORMATION.
000 
WGUS74 KEWX 050001
FFSSAT
TXC031-171-265-050100-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
700 PM CDT THU JUL 4 2002

...THE FLASH FLOOD WARNING FOR GILLESPIE...BLANCO AND KERR COUNTIES
HAS BEEN CANCELLED...

NATIONAL WEATHER SERVICE RADAR INDICATED THE RAINFALL WAS ENDING 
ACROSS THE WARNED AREA...AND THE FLASH FLOOD THREAT HAD ENDED. SOME 
RUNOFF MAY CONTINUE...BUT THE THREAT OF SERIOUS FLASH FLOODING HAS 
ENDED...AND THE FLASH FLOOD WARNING HAS BEEN CANCELLED.

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE WATER COVERS THE ROAD.
VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED QUICKLY. MOVE TO
HIGHER GROUND. STAY TUNED TO LOCAL MEDIA OUTLETS FOR THE LATEST
WEATHER INFORMATION.
000 
WGUS74 KEWX 050059
FFSSAT
TXC013-053-255-299-493-050130-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
800 PM CDT THU JUL 4 2002

...THE FLASH FLOOD WARNING HAS EXPIRED FOR BURNET...LLANO...
ATASCOSA...KARNES...AND WILSON COUNTIES...

NATIONAL WEATHER SERVICE RADAR INDICATED THE RAINFALL WAS ENDING 
ACROSS THE WARNED AREA...AND THE FLASH FLOOD THREAT HAD ENDED. SOME 
RUNOFF MAY CONTINUE...BUT THE THREAT OF SERIOUS FLASH FLOODING HAS 
ENDED...AND THE FLASH FLOOD WARNING HAS EXPIRED.

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE WATER COVERS THE ROAD.
VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED QUICKLY. MOVE TO
HIGHER GROUND. 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
Jul 3, 7:06 PM CDTFlash Flood WarningEWXBexar3 hr
Jul 3, 7:32 PM CDTFlash Flood WarningEWXAtascosa118 min
Jul 3, 8:11 PM CDTFlash Flood WarningEWXKendall3 hr
Jul 3, 9:03 PM CDTFlash Flood WarningEWXFrio3 hr
Jul 3, 9:25 PM CDTFlash Flood WarningEWXComal110 min
Jul 3, 9:59 PM CDTFlash Flood WarningEWXAtascosa2 hr
Jul 3, 10:17 PM CDTFlash Flood WarningEWXBexar3 hr
Jul 3, 11:06 PM CDTFlash Flood WarningEWXBlanco, Gillespie, Kendall3 hr
Jul 3, 11:42 PM CDTFlash Flood WarningEWXAtascosa, Frio, Medina, Uvalde3 hr
Jul 4, 12:28 AM CDTFlash Flood WarningEWXBexar, Comal, Gillespie, Kendall4 hr
Jul 4, 2:11 AM CDTFlash Flood WarningEWXBlanco4 hr
Jul 4, 2:40 AM CDTFlash Flood WarningEWXMedina, Uvalde2 hr
Jul 4, 2:50 AM CDTFlash Flood WarningEWXReal2 hr
Jul 4, 2:51 AM CDTFlash Flood WarningEWXLlano2 hr
Jul 4, 3:04 AM CDTFlash Flood WarningEWXBurnet116 min
Jul 4, 4:50 AM CDTFlash Flood WarningEWXBandera, Gillespie, Kendall, Kerr, Llano, Medina and 2 more7 hr
Jul 4, 6:51 AM CDTFlash Flood WarningEWXBlanco5 hr
Jul 4, 7:32 AM CDTFlash Flood WarningEWXBurnet4 hr
Jul 4, 7:52 AM CDTFlash Flood WarningEWXBexar4 hr
Jul 4, 9:29 AM CDTFlash Flood WarningEWXVal Verde3 hr
Jul 4, 11:40 AM CDTFlash Flood WarningEWXBandera, Bexar, Blanco, Burnet, Comal, Gillespie and 4 more4 hr
Jul 4, 2:18 PM CDTFlash Flood WarningEWXAtascosa, Frio102 min

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; radar from the NEXRAD Level II archive.