Alert archive / Texas / Flash Flood Warnings in 2002

Flash Flood Warning 43, NWS Austin/San Antonio, TX

July 1, 2002Dimmit County, Zavala County, Texas

NWS Austin/San Antonio, TX issued this flash flood warning at Jul 1, 2002, 12:07 PM CDT for Dimmit County, Zavala County, Texas. It was in force for 3 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 1, 2002, 12:07 PM CDT (17:07 UTC)
Expired
Jul 1, 2002, 3:00 PM CDT
In force
3 hr
Issued by
NWS Austin/San Antonio, TX
Area
Counties, with a storm outline in the text

Counties Dimmit County, TX, Zavala County, TX

The nearest sounding before it

Del Rio, TX (KDRT), launched 12:00Z, 5.1 hours before the alert went out and 119 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 2002-07-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 676 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 2002-07-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -17 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
676 J/kg
Mixed-layer CIN
-6 J/kg
Mixed-layer LCL
625 m above ground
0-6 km bulk shear
14 kt
0-1 km storm-relative helicity
-17 m²/s²
0-3 km storm-relative helicity
19 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 011707
FFWSAT
TXC127-507-012000-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
1204 PM CDT MON JUL 1 2002

THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS ISSUED A

* FLASH FLOOD WARNING FOR THE FOLLOWING COUNTIES...
  ZAVALA
  DIMMIT

* UNTIL 300 PM CDT

* AT 1204 PM...WEATHER SERVICE DOPPLER RADAR INDICATED VERY HEAVY
  RAIN FROM BIG WELLS AND BRUNDAGE TO BATESVILLE WITH RAINFALL RATES 
  OF 2 TO 4 INCHES PER HOUR.  THE RAINS WERE MOVING SLOWLY NORTH AT 
  10 MPH.

  RAINFALL AMOUNTS OF 3 TO 6 INCHES HAVE BEEN ESTIMATED THIS MORNING
  AND THE SOILS ARE LIKELY SATURATED...SO RUNOFF WILL BECOME RAPID 
  AND FLASH FLOODING WILL OCCUR.   

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 2855 10009 2855 9942 2907 9944 2907 10011
3 follow-up statements
000 
WGUS74 KEWX 011819
FFSSAT
TXC127-507-012000-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
119 PM CDT MON JUL 1 2002

...A FLASH FLOOD WARNING CONTINUES FOR ZAVALA AND DIMMIT COUNTIES
UNTIL 300 PM CDT...

AT 115 PM CDT...WEATHER SERVICE DOPPLER RADARS SHOWED VERY HEAVY 
RAINS BETWEEN CRYSTAL CITY...CARRIZO SPRINGS...AND BRUNDAGE WITH 
RAINFALL RATES OF 2 TO 3 INCHES PER HOUR.  ELSEWHERE...RAINFALL 
RATES WERE AROUND ONE-HALF INCH TO NEAR AN INCH.  THIS AREA IS 
MOVING VERY LITTLE.  FLASH FLOODING WILL CONTINUE INTO THE MID 
AFTERNOON HOURS.

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 011902
FFSSAT
TXC127-507-012000-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
202 CDT MON JUL 1 2002

...A FLASH FLOOD WARNING CONTINUES FOR ZAVALA AND DIMMIT COUNTIES
UNTIL 300 PM CDT...

AT 200 PM CDT...WEATHER SERVICE DOPPLER RADARS SHOWED RAINFALL 
DECREASING ACROSS ZAVALA COUNTY WITH THE HEAVIEST RAINFALL RATES OF 
1 TO 2 INCHES PER HOUR IN DIMMIT COUNTY SOUTHWEST OF CARRIZO 
SPRINGS.  RAINFALL RATES WILL CONINUE TO DECREASE AND FLASH FLOODING 
WILL OCCUR FOR THE NEXT HOUR OR SO. 

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 011958
FFSSAT
TXC013-029-163-012100-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
300 PM CDT MON JUL 1 2002

...THE FLASH FLOOD WARNING FOR BEXAR...ATASCOSA AND FRIO COUNTIES HAS
EXPIRED...

NATIONAL WEATHER SERVICE RADAR INDICATED THE RAINFALL HAS CONTINUED 
TO DECREASE AND THE FLOOD THREAT WAS DIMINISHING.  SOME MINOR 
FLOODING MAY CONTINUE...BUT THE THREAT OF SERIOUS 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 1, 4:28 AM CDTFlash Flood WarningEWXBexar2 hr
Jul 1, 6:36 AM CDTFlash Flood WarningEWXBexar3 hr
Jul 1, 6:56 AM CDTFlash Flood WarningEWXGonzales, Guadalupe2 hr
Jul 1, 7:48 AM CDTFlash Flood WarningEWXAtascosa117 min
Jul 1, 8:50 AM CDTFlash Flood WarningEWXFrio3 hr
Jul 1, 9:31 AM CDTFlash Flood WarningEWXAtascosa, Bexar2 hr
Jul 1, 12:12 PM CDTFlash Flood WarningEWXAtascosa, Bexar, Frio3 hr
Jul 1, 3:22 PM CDTFlash Flood WarningEWXKendall3 hr
Jul 1, 4:09 PM CDTFlash Flood WarningEWXMedina3 hr
Jul 1, 5:02 PM CDTFlash Flood WarningEWXBexar3 hr
Jul 1, 6:20 PM CDTFlash Flood WarningEWXKendall115 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.