Alert archive / Texas / Flash Flood Warnings in 2014

Flash Flood Warning 39, NWS Austin/San Antonio, TX

August 12, 2014Real County, Uvalde County, Texas

NWS Austin/San Antonio, TX issued this flash flood warning at Aug 12, 2014, 12:34 PM CDT for Real County, Uvalde 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 12, 2014, 12:34 PM CDT (17:34 UTC)
Expired
Aug 12, 2014, 3:30 PM CDT
In force
3 hr
Issued by
NWS Austin/San Antonio, TX
Area
Storm-based polygon
Flood severity
None

Counties Real County, TX, Uvalde County, TX

The radar

The Laughlin AFB radar (KDFX), 68 km from the middle of the area, began a volume at 17:37 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

Del Rio, TX (KDLF), launched 12:00Z, 5.6 hours before the alert went out and 113 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 2014-08-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1195 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 2014-08-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 26 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
1195 J/kg
Mixed-layer CIN
-112 J/kg
Mixed-layer LCL
1100 m above ground
0-6 km bulk shear
2 kt
0-1 km storm-relative helicity
26 m²/s²
0-3 km storm-relative helicity
40 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.

646 
WGUS54 KEWX 121734
FFWEWX
TXC385-463-122030-
/O.NEW.KEWX.FF.W.0039.140812T1734Z-140812T2030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
1234 PM CDT TUE AUG 12 2014

THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SOUTHEASTERN REAL COUNTY IN SOUTH CENTRAL TEXAS...
  THIS INCLUDES THE CITY OF LEAKEY...
  CENTRAL UVALDE COUNTY IN SOUTH CENTRAL TEXAS...

* UNTIL 330 PM CDT

* AT 1227 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS HAVE
  DETERMINED THAT RAINFALL ESTIMATES FROM DOPPLER RADAR INDICATE
  1 TO 3 INCHES OF RAIN HAS FALLEN OVER SOUTHEASTERN REAL AND
  NORTHERN UVALDE COUNTIES. AN ADDITIONAL 1 TO 3 INCHES OF RAIN
  IS LIKELY TO FALL BY 3 PM.

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO TUFF...
  REAGAN WELLS...GARNER STATE PARK...CONCAN AND RIO FRIO

PRECAUTIONARY/PREPAREDNESS ACTIONS...

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...COUNTRY ROADS...AS WELL AS FARMLAND ALONG THE
BANKS OF CREEKS AND STREAMS.

MOST FLOOD DEATHS OCCUR IN AUTOMOBILES. TURN AROUND...DONT DROWN.

CAMPERS AND HIKERS SHOULD AVOID STREAMS OR CREEKS.

&&

LAT...LON 2986 9977 2986 9961 2963 9961 2931 9952
      2931 10001

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 11, 7:23 PM CDTSpecial Weather StatementEWXDeWitt52 min
Aug 11, 7:38 PM CDTAreal Flood AdvisoryEWXDeWitt112 min
Aug 11, 7:56 PM CDTSpecial Weather StatementEWXDeWitt, Gonzales49 min
Aug 12, 11:56 AM CDTSpecial Weather StatementEWXUvalde49 min
Aug 12, 1:31 PM CDTSpecial Weather StatementEWXKinney44 min

Nearby

Flash Flood Warnings in Texas, 2014Every flash flood warning in 2014

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.