Alert archive / Texas / Flash Flood Warnings in 2014

Flash Flood Warning 5, NWS Austin/San Antonio, TX

May 12, 2014Hays County, Travis County, Texas

NWS Austin/San Antonio, TX issued this flash flood warning at May 12, 2014, 11:18 PM CDT for Hays County, Travis County, Texas. It was in force for 3 hr. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
May 12, 2014, 11:18 PM CDT (04:18 UTC)
Expired
May 13, 2014, 2:15 AM CDT
In force
3 hr
Issued by
NWS Austin/San Antonio, TX
Area
Storm-based polygon
Flood severity
None

Counties Hays County, TX, Travis County, TX

The radar

The Austin/San Antonio radar (KEWX), 34 km from the middle of the area, began a volume at 04:19 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.

What was reported inside it

TimeReportWhereRemark
May 13, 2:00 AM CDTFLASH FLOODSan Marcos, TXMOST LOW WATER CROSSINGS AROUND SAN MARCOS CLOSED EARLY MORNING DUE TO FLOODING. TIME ESTIMATED.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Corpus Christi, TX (KCRP), launched 00:00Z, 4.3 hours before the alert went out and 260 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 00:00Z on 2014-05-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2559 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, Corpus Christi, TX at 00:00Z on 2014-05-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 7 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
2559 J/kg
Mixed-layer CIN
-37 J/kg
Mixed-layer LCL
547 m above ground
0-6 km bulk shear
19 kt
0-1 km storm-relative helicity
7 m²/s²
0-3 km storm-relative helicity
43 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.0

Open this sounding in Storm Lab

The text

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

606 
WGUS54 KEWX 130418
FFWEWX
TXC209-453-130715-
/O.NEW.KEWX.FF.W.0005.140513T0418Z-140513T0715Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
1118 PM CDT MON MAY 12 2014

THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  EASTERN HAYS COUNTY...
  SOUTH CENTRAL TRAVIS COUNTY...

* UNTIL 215 AM CDT

* AT 1110 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS  
  DETECTED FLASH FLOODING FROM SLOW MOVING THUNDERSTORMS OVER 
  EASTERN PORTIONS OF HAYS COUNTY. DOPPLER RADAR AMOUNTS AND 
  GROUND TRUTH REPORTS IN THE AREA SUGGEST THAT 2 TO 3 INCHES 
  OF RAIN ARE LIKELY TO FALL IN AROUND 1 HOURS TIME...
  RESULTING IN RAPID RUNOFF.

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO BUDA
  AND SAN MARCOS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING. IF FLASH FLOODING IS OBSERVED ACT QUICKLY. MOVE
UP TO HIGHER GROUND TO ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS
SUBJECT TO FLOODING WHEN WATER BEGINS RISING.

&&

LAT...LON 3021 9797 3004 9772 2980 9799 2985 9803
      2989 9809

$$
1 follow-up statement
421 
WGUS74 KEWX 130717
FFSEWX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
217 AM CDT TUE MAY 13 2014

TXC209-453-130725-
/O.EXP.KEWX.FF.W.0005.000000T0000Z-140513T0715Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
HAYS TX-TRAVIS TX-
217 AM CDT TUE MAY 13 2014

...THE FLASH FLOOD WARNING HAS EXPIRED FOR SOUTH CENTRAL TRAVIS AND
EASTERN HAYS COUNTIES...

NATIONAL WEATHER SERVICE RADAR SHOWED ONLY LIGHT RAINS ACROSS TRAVIS 
AND HAYS COUNTIES. NO ADDITIONAL FLASH FLOODING IS EXPECTED. THE 
WARNING WAS ALLOWED TO EXPIRE. HOWEVER...SOME STREAMS WILL STILL RUN 
HIGH FOR THE NEXT COUPLE OF HOURS DUE TO EARLIER VERY HEAVY RAINS.

LAT...LON 3021 9797 3004 9772 2980 9799 2985 9803
      2989 9809

$$

The office that day

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

IssuedProductOfficeCountiesLasted
May 12, 7:25 PM CDTSevere Thunderstorm WarningEWXGillespie, Kerr35 min
May 12, 8:09 PM CDTSpecial Weather StatementEWXKerr51 min
May 12, 9:01 PM CDTAreal Flood AdvisoryEWXTravis, Williamson3 hr
May 12, 9:50 PM CDTSpecial Weather StatementEWXKendall40 min
May 12, 10:09 PM CDTFlash Flood WarningEWXBlanco, Comal, Hays3 hr
May 12, 10:17 PM CDTFlash Flood WarningEWXTravis3 hr
May 12, 10:17 PM CDTSpecial Weather StatementEWXMaverick43 min
May 12, 10:36 PM CDTAreal Flood AdvisoryEWXBexar114 min
May 12, 10:47 PM CDTAreal Flood AdvisoryEWXBastrop, Lee, Travis, Williamson103 min
May 12, 10:52 PM CDTSpecial Weather StatementEWXBexar23 min
May 12, 11:10 PM CDTFlash Flood WarningEWXTravis2 hr
May 12, 11:13 PM CDTSpecial Weather StatementEWXGuadalupe, Wilson32 min
May 12, 11:21 PM CDTAreal Flood AdvisoryEWXBexar, Comal, Guadalupe, Wilson2 hr
May 12, 11:26 PM CDTAreal Flood AdvisoryEWXAtascosa, Frio, Kinney, Maverick, Medina, Uvalde and 1 more2 hr
May 12, 11:30 PM CDTAreal Flood AdvisoryEWXBastrop, Fayette, Lee2 hr
May 12, 11:38 PM CDTAreal Flood AdvisoryEWXCaldwell, Comal, Guadalupe112 min
May 12, 11:40 PM CDTFlash Flood WarningEWXBexar2 hr
May 12, 11:42 PM CDTSpecial Weather StatementEWXCaldwell48 min
May 12, 11:53 PM CDTFlash Flood WarningEWXBastrop, Caldwell, Comal, Guadalupe, Hays3 hr
May 13, 12:05 AM CDTAreal Flood AdvisoryEWXBastrop, Caldwell, Fayette115 min
May 13, 12:11 AM CDTSpecial Weather StatementEWXKarnes49 min
May 13, 12:12 AM CDTSpecial Weather StatementEWXWilson48 min
May 13, 12:14 AM CDTSpecial Weather StatementEWXCaldwell46 min
May 13, 12:26 AM CDTSpecial Weather StatementEWXFrio49 min
May 13, 12:37 AM CDTFlash Flood WarningEWXBastrop, Fayette, Gonzales, Lee113 min
May 13, 12:41 AM CDTSpecial Weather StatementEWXDeWitt, Gonzales64 min
May 13, 12:48 AM CDTAreal Flood AdvisoryEWXKarnes, Wilson2 hr
May 13, 12:56 AM CDTAreal Flood AdvisoryEWXCaldwell, Gonzales, Guadalupe2 hr
May 13, 1:08 AM CDTFlash Flood WarningEWXAtascosa, Bexar, Wilson3 hr
May 13, 1:15 AM CDTSpecial Weather StatementEWXDeWitt, Lavaca60 min
May 13, 1:39 AM CDTAreal Flood AdvisoryEWXDeWitt, Gonzales, Lavaca3 hr
May 13, 1:54 AM CDTAreal Flood AdvisoryEWXBexar2 hr
May 13, 2:09 AM CDTSpecial Weather StatementEWXLavaca51 min
May 13, 8:50 AM CDTRiver Flood WarningEWXBexar6 hr
May 13, 8:50 AM CDTRiver Flood WarningEWXBexar6 hr
May 13, 8:50 AM CDTRiver Flood WarningEWXBexar, Wilson13 hr

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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.