Alert archive / Texas / Flash Flood Warnings in 2004

Flash Flood Warning 11, NWS Austin/San Antonio, TX

March 14, 2004Hays County, Lavaca County, Texas

NWS Austin/San Antonio, TX issued this flash flood warning at Mar 14, 2004, 12:17 PM CST for Hays County, Lavaca County, Texas. It was in force for 202 days. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Mar 14, 2004, 12:17 PM CST (18:17 UTC)
Expired
Oct 2, 2004, 12:30 PM CDT
In force
202 days
Issued by
NWS Austin/San Antonio, TX
Area
Counties, with a storm outline in the text

Counties Hays County, TX, Lavaca County, TX

The radar

The Austin/San Antonio radar (KEWX), 30 km from the middle of the area, began a volume at 18:17 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, 6.3 hours before the alert went out and 257 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 2004-03-14Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 671 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 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 2004-03-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 71 square meters per square second.1939587897Sfc1 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
671 J/kg
Mixed-layer CIN
-6 J/kg
Mixed-layer LCL
569 m above ground
0-6 km bulk shear
39 kt
0-1 km storm-relative helicity
71 m²/s²
0-3 km storm-relative helicity
27 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.3

Open this sounding in Storm Lab

The text

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

000 
WGUS54 KEWX 141821
FFWSAT
TXC285-142115-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
1217 PM CST SUN MAR 14 2004

THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS ISSUED A

* FLASH FLOOD WARNING FOR THE FOLLOWING COUNTIES...
  LAVACA

* UNTIL 315 PM CST

* AT 1217 PM...WEATHER SERVICE DOPPLER RADAR INDICATED HEAVY
  RAIN OVER LAVACA COUNTY...MOVING NORTHEAST AT 15 MPH.

RADAR INDICATED SHOWERS AND THUNDERSTORMS WITH LOCALLY HEAVY RAIN 
WERE INCREASING ACROSS SOUTHERN LAVACA COUNTY WITH ADDITIONAL 
RAINFALL AMOUNTS OF 1 TO 2 INCHES POSSIBLE OVER THE NEXT ONE TO TWO 
HOURS.  BECAUSE OF SATURATED SOILS FROM RECENT RAINS...THE 
ADDITIONAL RAINS WILL QUICKLY RUN OFF AND CAUSE FLOODING PROBLEMS. 

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY. VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED QUICKLY.
MOVE TO HIGHER GROUND.

LAT...LON 2939 9722 2913 9691 2935 9664 2959 9691

$$
1 follow-up statement
000 
WGUS54 KEWX 021426
FFWSAT
TXC209-021730-
/X.NEW.KEWX.FF.W.0011.041002T1426Z-041002T1730Z/
/0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
926 AM CDT SAT OCT 2 2004

THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS ISSUED A

* FLASH FLOOD WARNING FOR THE FOLLOWING COUNTIES...
  HAYS

* UNTIL 1230 PM CDT

* AT 825 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED 
  VERY HEAVY RAIN FROM SHOWERS AND THUNDERSTORM OVER THE WARNED AREA.

* LOCATIONS IN THE WARNING INCLUDE WOODCREEK...HENLY...DRIPPING
  SPRINGS...DRIFTWOOD AND BUDA.

LOCALLY HEAVY RAINS OF 1 TO 3 INCHES ARE EXPECTED IN THE NEXT FEW 
HOURS FROM SHOWERS AND THUNDERSTORMS.  THIS WILL CAUSE FLOODING AT 
LOW WATER CROSSINGS AND IN LOW LYING AREAS.

HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL CREEKS AND STREAMS...
COUNTRY ROADS...AND FARMLAND ALONG THE BANKS OF CREEKS AND STREAMS.

FLASH FLOODING IS OCCURRING OR IS IMMINENT. MOST FLOOD DEATHS OCCUR
IN AUTOMOBILES. DO NOT ATTEMPT TO CROSS WATER COVERED AREAS. A LITTLE
OVER A FOOT OF WATER CAN CARRY AWAY MOST CARS AND TRUCKS. TURN AROUND
- DONT DROWN.

LAT...LON 2995 9780 2994 9784 2987 9791 2985 9790
      2977 9800 2984 9803 3003 9829 3007 9829
      3035 9817 3003 9773

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 14, 2:56 PM CSTSevere Thunderstorm WarningEWXVal Verde64 min
Mar 14, 3:51 PM CSTFlash Flood WarningEWXAtascosa, Karnes, Val Verde202 days
Mar 14, 4:21 PM CSTFlash Flood WarningEWXBastrop, Caldwell, Edwards, Lee202 days
Mar 14, 4:41 PM CSTSevere Thunderstorm WarningEWXEdwards64 min
Mar 14, 5:36 PM CSTFlash Flood WarningEWXReal, Travis202 days

Nearby

Flash Flood Warnings in Texas, 2004Every flash flood warning in 2004

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.