Alert archive / Texas / Flash Flood Warnings in 2005

Flash Flood Warning 74, NWS Austin/San Antonio, TX

August 8, 2005Llano County, Texas

NWS Austin/San Antonio, TX issued this flash flood warning at Aug 8, 2005, 1:39 PM CDT for Llano 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
Aug 8, 2005, 1:39 PM CDT (18:39 UTC)
Expired
Aug 8, 2005, 4:45 PM CDT
In force
3 hr
Issued by
NWS Austin/San Antonio, TX
Area
Counties, with a storm outline in the text

County Llano County, TX

The nearest sounding before it

Del Rio, TX (KDRT), launched 12:00Z, 6.7 hours before the alert went out and 261 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 2005-08-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1434 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 2005-08-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 14 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
1434 J/kg
Mixed-layer CIN
-70 J/kg
Mixed-layer LCL
994 m above ground
0-6 km bulk shear
13 kt
0-1 km storm-relative helicity
14 m²/s²
0-3 km storm-relative helicity
48 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 081845
FFWEWX
TXC299-082145-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
139 PM CDT MON AUG 8 2005

THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS ISSUED A

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

* UNTIL 445 PM CDT

* AT 135 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  LOCALLY HEAVY RAIN FROM THUNDERSTORMS OVER LLANO COUNTRY FROM
  LONE GROVE TO SUNRISE BEACH. THE STORMS WERE DRIFTING EAST AROUND
  10 TO 15 MPH.

* LOCATIONS IN THE WARNING INCLUDE LONE GROVE...BLUFFTON...
  KINGSLAND AND SUNRISE BEACH.

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

LAT...LON 3063 9869 3063 9848 3081 9848 3081 9869

$$
2 follow-up statements
000 
WGUS74 KEWX 081956
FFSEWX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
254 PM CDT MON AUG 8 2005

TXC299-082145-
LLANO TX-
254 PM CDT MON AUG 8 2005

...A FLASH FLOOD WARNING CONTINUES UNTIL 445 PM CDT FOR LLANO
COUNTY...

AT 249 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
INDICATE A THUNDERSTORMS PRODUCING FLASH FLOODING OVER LLANO COUNTY
MOVING EAST NEAR 10 TO 15 MPH.

LOCATIONS IN THE WARNING INCLUDE LLANO...LONE GROVE...SUNRISE 
BEACH...BLUFFTON AND KINGSLAND.

HEAVY RAINFALL WILL CAUSE FLASH FLOODING OVER SMALL CREEKS AND
STREAMS...URBAN AREAS...HIGHWAYS...STREETS...UNDERPASSES AND POORLY
DRAINED AREAS.

LAT...LON 3063 9869 3063 9848 3081 9848 3081 9869

$$
000 
WGUS74 KEWX 082137
FFSEWX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
435 PM CDT MON AUG 8 2005

TXC299-082145-
LLANO TX-
435 PM CDT MON AUG 8 2005

...THE FLASH FLOOD WARNING FOR LLANO COUNTY IS CANCELLED...

THUNDERSTORMS THAT PROMPTED THE WARNING HAVE WEAKENED AND NO LONGER 
POSE A THREAT. NO FLASH FLOODING HAS BEEN REPORTED TO THE LLANO 
SHERIFFS OFFICE. ADDITIONAL THUNDERSTORMS ARE POSSIBLE FOR THE 
REMAINDER OF THIS AFTERNOON INTO TONIGHT.

LAT...LON 3063 9869 3063 9848 3081 9848 3081 9869

$$

Nearby

Flash Flood Warnings in Texas, 2005Every flash flood warning in 2005

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.