Alert archive / Texas / Flash Flood Warnings in 2004

Flash Flood Warning 49, NWS Austin/San Antonio, TX

April 10, 2004Val Verde County, Texas

NWS Austin/San Antonio, TX issued this flash flood warning at Apr 10, 2004, 12:44 PM CDT for Val Verde 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: Apr 10, 2004, 12:44 PM CDT (17:44 UTC)
Expired: Apr 10, 2004, 3:45 PM CDT
In force: 3 hr
Issued by: NWS Austin/San Antonio, TX
Area: Counties, with a storm outline in the text

County Val Verde County, TX

The nearest sounding before it

Del Rio, TX (KDRT), launched 12:00Z, 5.7 hours before the alert went out and 66 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 2092 J/kg
Mixed-layer CIN: -13 J/kg
Mixed-layer LCL: 558 m above ground
0-6 km bulk shear: 48 kt
0-1 km storm-relative helicity: 95 m²/s²
0-3 km storm-relative helicity: 106 m²/s²
Significant tornado parameter: 0.9
Supercell composite: 3.7

Open this sounding in Storm Lab

The text

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

000 
WGUS54 KEWX 101747
FFWSAT
TXC465-102045-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
1244 PM CDT SAT APR 10 2004

THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS ISSUED A

* FLASH FLOOD WARNING FOR THE FOLLOWING COUNTIES...
  VAL VERDE

* UNTIL 345 PM CDT

* AT 1244 PM...WEATHER SERVICE DOPPLER RADAR INDICATED VERY HEAVY
  RAIN OCCURRING BETWEEN JUNO AND LOMA ALTA. MOVEMENT IS NORTHEAST
  AT 15 MPH. PERSONS ALONG 189...163 AND 277 SHOULD BE ON THE
  ALERT FOR RISING WATER.  

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 2977 10138 2948 10071 3027 10072 3028 10138

$$

1 follow-up statement

000 
WGUS74 KEWX 102043
FFSSAT
TXC465-102155-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
345 PM CDT SAT APR 10 2004

...THE FLASH FLOOD WARNING FOR VAL VERDE COUNTY HAS EXPIRED...

NATIONAL WEATHER SERVICE RADAR INDICATED THE RAINFALL WAS ENDING 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.

Issued	Product	Office	Counties	Lasted
Apr 10, 11:21 AM CDT	Severe Thunderstorm Warning	EWX	Val Verde	39 min
Apr 10, 11:58 AM CDT	Severe Thunderstorm Warning	EWX	Val Verde	47 min
Apr 10, 12:25 PM CDT	Severe Thunderstorm Warning	EWX	Edwards	35 min
Apr 10, 1:32 PM CDT	Severe Thunderstorm Warning	EWX	Edwards	58 min
Apr 10, 2:27 PM CDT	Flash Flood Warning	EWX	Real	3 hr
Apr 10, 2:57 PM CDT	Severe Thunderstorm Warning	EWX	Maverick	63 min
Apr 10, 3:10 PM CDT	Severe Thunderstorm Warning	EWX	Kinney	50 min
Apr 10, 3:19 PM CDT	Severe Thunderstorm Warning	EWX	Bandera	56 min
Apr 10, 3:51 PM CDT	Severe Thunderstorm Warning	EWX	Kendall	54 min
Apr 10, 4:04 PM CDT	Severe Thunderstorm Warning	EWX	Uvalde	56 min
Apr 10, 4:09 PM CDT	Severe Thunderstorm Warning	EWX	Medina	66 min
Apr 10, 4:13 PM CDT	Severe Thunderstorm Warning	EWX	Guadalupe	47 min
Apr 10, 4:20 PM CDT	Severe Thunderstorm Warning	EWX	Caldwell	55 min
Apr 10, 4:25 PM CDT	Severe Thunderstorm Warning	EWX	Bexar	65 min
Apr 10, 4:27 PM CDT	Flash Flood Warning	EWX	Medina, Uvalde	3 hr
Apr 10, 4:33 PM CDT	Severe Thunderstorm Warning	EWX	Comal	57 min
Apr 10, 4:41 PM CDT	Flash Flood Warning	EWX	Bexar, Caldwell, Comal, Gonzales, Guadalupe	2 hr
Apr 10, 4:55 PM CDT	Severe Thunderstorm Warning	EWX	Zavala	65 min
Apr 10, 4:57 PM CDT	Flash Flood Warning	EWX	Frio, Zavala	2 hr
Apr 10, 5:05 PM CDT	Flash Flood Warning	EWX	Wilson	115 min
Apr 10, 5:06 PM CDT	Severe Thunderstorm Warning	EWX	Guadalupe	54 min
Apr 10, 5:15 PM CDT	Flash Flood Warning	EWX	Fayette	2 hr
Apr 10, 5:19 PM CDT	Severe Thunderstorm Warning	EWX	Hays	41 min
Apr 10, 5:23 PM CDT	Severe Thunderstorm Warning	EWX	Fayette, Lavaca	52 min
Apr 10, 5:28 PM CDT	Tornado Warning	EWX	Fayette, Lavaca	47 min
Apr 10, 5:29 PM CDT	Flash Flood Warning	EWX	Atascosa	91 min
Apr 10, 5:32 PM CDT	Severe Thunderstorm Warning	EWX	Atascosa, Bexar	58 min
Apr 10, 5:35 PM CDT	Flash Flood Warning	EWX	Lavaca	100 min
Apr 10, 5:55 PM CDT	Flash Flood Warning	EWX	DeWitt, Karnes	2 hr

Nearby

Flash Flood Warnings in Texas, 2004 Every 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.