Alert archive / Texas / Flash Flood Warnings in 2015

Flash Flood Warning 22, NWS Austin/San Antonio, TX

May 13, 2015Atascosa County, Karnes County, Wilson County, Texas

NWS Austin/San Antonio, TX issued this flash flood warning at May 13, 2015, 1:16 PM CDT for Atascosa County, Karnes County, Wilson County, Texas. It was in force for 4 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
May 13, 2015, 1:16 PM CDT (18:16 UTC)
Expired
May 13, 2015, 5:15 PM CDT
In force
4 hr
Issued by
NWS Austin/San Antonio, TX
Area
Storm-based polygon
Flood severity
None

Counties Atascosa County, TX, Karnes County, TX, Wilson County, TX

The radar

The Austin/San Antonio radar (KEWX), 103 km from the middle of the area, began a volume at 18:18 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 141 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 2015-05-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 187 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 2015-05-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 124 square meters per square second.193958Sfc1 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
187 J/kg
Mixed-layer CIN
-130 J/kg
Mixed-layer LCL
798 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
124 m²/s²
0-3 km storm-relative helicity
203 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.

201 
WGUS54 KEWX 131816
FFWEWX
TXC013-255-493-132215-
/O.NEW.KEWX.FF.W.0022.150513T1816Z-150513T2215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
116 PM CDT WED MAY 13 2015

THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SOUTHEASTERN ATASCOSA COUNTY IN SOUTH CENTRAL TEXAS...
  KARNES COUNTY IN SOUTH CENTRAL TEXAS...
  SOUTHERN WILSON COUNTY IN SOUTH CENTRAL TEXAS...

* UNTIL 515 PM CDT
    
* AT 114 PM CDT...DOPPLER RADAR INDICATED A THUNDERSTORM PRODUCING
  HEAVY RAIN ACROSS THE WARNED AREA. UP TO TWO INCHES OF RAIN HAVE
  ALREADY FALLEN. FLASH FLOODING IS EXPECTED TO BEGIN SHORTLY.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  PLEASANTON...FLORESVILLE...JOURDANTON...KENEDY...KARNES CITY...
  POTH...STOCKDALE...CHRISTINE...CAMPBELLTON...KOSCIUSKO...RUNGE...
  FALLS CITY...CESTOHOWA...EL OSO...PANA MARIA...CHOATE...HOBSON...
  PAWELEVILLE...FASHING AND MCCOY.

ADDITIONAL RAINFALL AMOUNTS OF 1 TO 3 ARE POSSIBLE IN THE WARNED 
AREA THROUGH THE AFTERNOON. WITH THE EXCESSIVE RAINFALL THAT HAS
ALREADY OCCURRED THIS WEEK...SATURATED SOILS WILL NOT HOLD MUCH
WATER AND FLASH FLOODING IS LIKELY. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MOVE TO HIGHER GROUND NOW. ACT QUICKLY TO PROTECT YOUR LIFE.

TURN AROUND...DONT DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.

&&

LAT...LON 2864 9834 2864 9858 2894 9859 2911 9835
      2929 9796 2877 9763 2867 9778 2869 9786
      2872 9792 2869 9801 2879 9810 2861 9833

$$

ALLEN

The office that day

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

IssuedProductOfficeCountiesLasted
May 13, 5:40 AM CDTAreal Flood AdvisoryEWXEdwards, Kinney, Val Verde3 hr
May 13, 5:55 AM CDTFlash Flood WarningEWXVal Verde3 hr
May 13, 7:05 AM CDTAreal Flood AdvisoryEWXMaverick3 hr
May 13, 7:35 AM CDTAreal Flood AdvisoryEWXEdwards, Kinney, Real, Uvalde3 hr
May 13, 7:39 AM CDTSpecial Weather StatementEWXDimmit, Maverick, Zavala66 min
May 13, 7:42 AM CDTSpecial Weather StatementEWXReal63 min
May 13, 7:48 AM CDTSpecial Weather StatementEWXUvalde57 min
May 13, 8:33 AM CDTSpecial Weather StatementEWXBandera, Kerr57 min
May 13, 8:40 AM CDTSpecial Weather StatementEWXFrio, Medina, Zavala65 min
May 13, 8:48 AM CDTSpecial Weather StatementEWXBandera27 min
May 13, 9:02 AM CDTAreal Flood AdvisoryEWXKinney, Val Verde118 min
May 13, 9:22 AM CDTSpecial Weather StatementEWXBandera, Blanco, Gillespie, Kendall53 min
May 13, 9:37 AM CDTSpecial Weather StatementEWXAtascosa, Bexar, Frio53 min
May 13, 9:46 AM CDTAreal Flood AdvisoryEWXBandera, Kerr, Medina, Uvalde3 hr
May 13, 9:53 AM CDTSevere Thunderstorm WarningEWXAtascosa, Bexar, Frio, Medina52 min
May 13, 10:13 AM CDTSpecial Weather StatementEWXBlanco, Burnet, Hays62 min
May 13, 10:25 AM CDTSpecial Weather StatementEWXBexar, Comal, Guadalupe, Karnes, Wilson65 min
May 13, 10:32 AM CDTTornado WarningEWXBlanco, Hays28 min
May 13, 11:06 AM CDTSpecial Weather StatementEWXComal, Hays, Travis, Williamson39 min
May 13, 11:42 AM CDTAreal Flood AdvisoryEWXAtascosa, Karnes, Wilson3 hr
May 13, 11:46 AM CDTSpecial Weather StatementEWXBastrop, Caldwell, Travis, Williamson59 min
May 13, 12:21 PM CDTFlash Flood WarningEWXBastrop, Lee6 hr
May 13, 12:30 PM CDTAreal Flood AdvisoryEWXBlanco, Burnet, Caldwell, Comal, Guadalupe, Hays and 2 more3 hr
May 13, 12:48 PM CDTSpecial Weather StatementEWXGonzales42 min
May 13, 2:01 PM CDTAreal Flood AdvisoryEWXBandera, Bexar, Comal, Guadalupe, Kendall, Medina and 1 more3 hr
May 13, 4:11 PM CDTAreal Flood AdvisoryEWXDeWitt, Gonzales, Karnes, Lavaca, Wilson2 hr
May 13, 4:35 PM CDTSevere Thunderstorm WarningEWXVal Verde40 min
May 13, 5:10 PM CDTSevere Thunderstorm WarningEWXVal Verde50 min
May 13, 5:46 PM CDTTornado WarningEWXVal Verde29 min
May 13, 5:57 PM CDTSevere Thunderstorm WarningEWXVal Verde48 min
May 13, 6:16 PM CDTSevere Thunderstorm WarningEWXVal Verde44 min

Nearby

Flash Flood Warnings in Texas, 2015Every flash flood warning in 2015

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.