Alert archive / Texas / Flash Flood Warnings in 2002

Flash Flood Warning 262, NWS Austin/San Antonio, TX

November 4, 200212 counties in Texas

NWS Austin/San Antonio, TX issued this flash flood warning at Nov 4, 2002, 2:59 PM CST for 12 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
Nov 4, 2002, 2:59 PM CST (20:59 UTC)
Expired
Nov 4, 2002, 6:45 PM CST
In force
4 hr
Issued by
NWS Austin/San Antonio, TX
Area
Counties, with a storm outline in the text

Counties Bastrop County, TX, Bexar County, TX, Caldwell County, TX, Comal County, TX, Fayette County, TX, Gonzales County, TX, Guadalupe County, TX, Hays County, TX, Lee County, TX, Travis County, TX, Williamson County, TX, Wilson County, TX

The radar

The Austin/San Antonio radar (KEWX), 20 km from the middle of the area, began a volume at 21:01 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, 9.0 hours before the alert went out and 247 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 2002-11-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 2002-11-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 358 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
619 m above ground
0-6 km bulk shear
44 kt
0-1 km storm-relative helicity
358 m²/s²
0-3 km storm-relative helicity
370 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 042059
FFWSAT
TXC021-029-055-091-149-177-187-209-287-453-491-493-050045-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
247 PM CST MON NOV 4 2002

THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS ISSUED A

* FLASH FLOOD WARNING FOR THE FOLLOWING COUNTIES...
  WILLIAMSON
  TRAVIS
  LEE
  BASTROP
  HAYS
  FAYETTE
  CALDWELL
  COMAL
  GUADALUPE
  GONZALES
  BEXAR
  WILSON

* UNTIL 645 PM CST

* AT 247 PM...WEATHER SERVICE RADAR INDICATED A BROAD BAND OF HEAVY 
RAIN EAST OF THE ESCARPMENT.  RAINFALL RATES ARE ESTIMATED NEAR ONE 
INCH AN HOUR FROM SAN ANTONIO TO LOCKHART TO AUSTIN AND GIDDINGS.  
THIS AREA OF RAIN HAS MOVED LITTLE OVER THE PAST HOUR.  LEON AND 
SALADO CREEKS IN BEXAR COUNTY WILL BE DANGEROUS DURING RUSH HOUR.  
MANY AREAS CREEKS, SUCH AS GERONIMO, ONION AND WILLIAMSON CREEKS, 
ARE RISING.  SEVERAL ROADS IN HAYS COUNTY HAVE BEEN CLOSED. A CO OP 
WEATHER OBSERVER REPORTED WATER OF FARM ROAD 302 NEAR COUPLAND.  

EXCESSIVE RUNOFF FROM THIS STORM WILL CAUSE FLASH FLOODING OF SMALL
CREEKS AND STREAMS...HIGHWAYS AND UNDERPASSES. ADDITIONALLY...COUNTRY
ROADS AND FARMLANDS ALONG THE BANKS OF CREEKS AND STREAMS AND OTHER
LOW LYING AREAS ARE SUBJECT TO FLASH FLOODING.

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 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 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.

LAT...LON 2951 9871 2891 9819 3005 9679 3086 9750
          3045 9793
2 follow-up statements
000 
WGUS74 KEWX 042201
FFSSAT
TXC021-029-055-091-149-177-187-209-287-453-491-493-050045-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
351 PM CST MON NOV 4 2002

...A FLASH FLOOD WARNING CONTINUES FOR WILLIAMSON...TRAVIS...LEE...
BASTROP...HAYS...FAYETTE...CALDWELL...COMAL...GUADALUPE...GONZALES...
BEXAR AND WILSON COUNTIES UNTIL 645 PM CST...
...A FLASH FLOOD WATCH CONTINUES FOR TONIGHT OVER THE EASTERN HALF
OF SOUTH CENTRAL TEXAS...

NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED AN AREA OF RAIN...
WITH SHOWERS AND ISOLATED THUNDERSTORMS FROM NEAR SAN ANTONIO TO 
AUSTIN AND GEORGETOWN...THEN EAST TO SCHULENBURG...GONZALES...AND 
FLORESVILLE.  THE AREAS OF RAIN...WITH SHOWERS AND ISOLATED 
THUNDERSTORMS WAS MOVING NORTHEAST AT 20 MPH.  

EACH WAVE OF RAIN THIS AFTERNOON HAS BEEN FOLLOWED BY ADDITIONAL 
WAVES OF RAIN...ADDING TO LOCALLY HEAVY RAIN IN SOME AREAS. MORE 
RAIN IS EXPECTED IN THE NEXT FEW HOURS.  AS OF 350 PM CST...
WIDESPREAD RAINFALL AMOUNTS TODAY HAVE BEEN BETWEEN 1 AND 2 INCHES 
OVER PARTS OF WILLIAMSON...TRAVIS...LEE...BASTROP...HAYS...FAYETTE...
CALDWELL...COMAL...GUADALUPE...GONZALES...BEXAR AND WILSON COUNTIES. 
SOME AREAS HAVE RECEIVED BETWEEN 2 AND 3 INCHES OF RAIN AS OF
350 PM CST TODAY.  THE COLD...DAMP RAINS ARE EXPECTED TO CONTINUE
THE NEXT FEW HOURS.

LEON AND SALADO CREEKS IN BEXAR COUNTY WILL BE DANGEROUS DURING RUSH 
HOUR.  MANY AREAS CREEKS, SUCH AS GERONIMO, ONION AND WILLIAMSON 
CREEKS, ARE RISING.  SEVERAL ROADS IN HAYS COUNTY HAVE BEEN CLOSED. 
A COOP WEATHER OBSERVER REPORTED WATER OVER FARM ROAD 302 NEAR 
COUPLAND...AND THE PUBLIC HAS REPORTED FLOODED ROADS IN BASTROP
COUNTY.

EXCESSIVE RUNOFF FROM ADDITIONAL RAINS IN THE NEXT FEW HOURS 
WILL CAUSE FLASH FLOODING OF SMALL CREEKS AND STREAMS...HIGHWAYS AND 
UNDERPASSES. ADDITIONALLY...COUNTRY ROADS AND FARMLANDS ALONG THE 
BANKS OF CREEKS AND STREAMS AND OTHER LOW LYING AREAS ARE SUBJECT TO 
FLASH FLOODING.

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.

A FLASH FLOOD WATCH CONTINUES THROUGH TONIGHT FOR PORTIONS OF SOUTH 
CENTRAL TEXAS INCLUDING THE COASTAL PRAIRIES AND THE I-35 CORRIDOR.  
THIS WATCH INCLUDES THE CITIES OF AUSTIN AND SAN ANTONIO.
THE WATCH IS IN EFFECT UNTIL 6 AM CST TUESDAY MORNING.

THE FLASH FLOOD WATCH INCLUDES THE FOLLOWING COUNTIES...

ATASCOSA...BASTROP...BEXAR...CALDWELL...COMAL...DEWITT...FAYETTE...
GONZALES...GUADALUPE...HAYS...KARNES...LAVACA...LEE...TRAVIS...
WILLIAMSON AND WILSON.
000 
WGUS74 KEWX 042358
FFSSAT
TXC021-029-055-091-149-177-187-209-287-453-491-493-050045-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
555 PM CST MON NOV 4 2002

...A FLASH FLOOD WARNING CONTINUES FOR WILLIAMSON...TRAVIS...LEE...
BASTROP...HAYS...FAYETTE...CALDWELL...COMAL...GUADALUPE...GONZALES...
BEXAR AND WILSON COUNTIES UNTIL 645 PM CST...

...A FLASH FLOOD WATCH CONTINUES FOR TONIGHT OVER THE EASTERN HALF 
OF SOUTH CENTRAL TEXAS...

NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED WIDESPREAD RAIN 
WITH EMBEDDED HEAVIER SHOWERS FROM SAN ANTONIO AND GEORGETOWN 
EASTWARD TO HALLETTSVILLE AND LEXINGTON.  RAINFALL RATES ARE 
ESTIMATED AROUND ONE QUARTER INCH AND HOUR WITH NEAR 1 INCH AN HOUR 
RATES IN THE HEAVIER SHOWERS.  MOVEMENT IS NORTHEAST AT 20 MPH.

RAINFALL AMOUNTS TODAY HAVE BEEN BETWEEN 1 AND 2 INCHES OVER PARTS 
OF THE WARNING AREA.  AN ADDITIONAL INCH OF RAINFALL IS POSSIBLE 
OVER THE WARNED AREA OVER THE NEXT 1 TO 2 HOURS.  WITH THE SOIL 
ALREADY SATURATED FROM PREVIOUS RAINS...MUCH OF THE CURRENT RAINFALL 
IS RUNNING OFF INTO CREEKS AND STREAMS.

RUNOFF FROM ADDITIONAL RAINS OVER THE NEXT FEW HOURS WILL CAUSE 
FLASH FLOODING OF SMALL CREEKS AND STREAMS...HIGHWAYS AND 
UNDERPASSES. ADDITIONALLY...COUNTRY ROADS AND FARMLANDS ALONG THE 
BANKS OF CREEKS AND STREAMS AND OTHER LOW LYING AREAS ARE SUBJECT TO 
FLASH FLOODING.

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.

A FLASH FLOOD WATCH CONTINUES THROUGH TONIGHT FOR PORTIONS OF SOUTH 
CENTRAL TEXAS INCLUDING THE COASTAL PRAIRIES AND THE I-35 CORRIDOR.  
THIS WATCH INCLUDES THE CITIES OF AUSTIN AND SAN ANTONIO.

THE WATCH IS IN EFFECT UNTIL 6 AM CST TUESDAY MORNING AND INCLUDES 
THE FOLLOWING COUNTIES...

ATASCOSA... BASTROP... BEXAR... CALDWELL... COMAL... DEWITT... 
FAYETTE... GONZALES... GUADALUPE... HAYS... KARNES... LAVACA... 
LEE... TRAVIS... WILLIAMSON AND WILSON.

The office that day

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

IssuedProductOfficeCountiesLasted
Nov 4, 12:20 PM CSTFlash Flood WarningEWXHays, Travis3 hr
Nov 4, 12:31 PM CSTFlash Flood WarningEWXLee3 hr
Nov 4, 12:47 PM CSTFlash Flood WarningEWXGuadalupe2 hr
Nov 4, 1:30 PM CSTFlash Flood WarningEWXBastrop, Caldwell3 hr
Nov 4, 1:58 PM CSTFlash Flood WarningEWXFayette2 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; radar from the NEXRAD Level II archive.