Alert archive / Texas / Flash Flood Warnings in 2014

Flash Flood Warning 2, NWS Austin/San Antonio, TX

May 12, 2014Blanco County, Comal County, Hays County, Texas

NWS Austin/San Antonio, TX issued this flash flood warning at May 12, 2014, 10:09 PM CDT for Blanco County, Comal County, Hays 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, 10:09 PM CDT (03:09 UTC)
Expired
May 13, 2014, 1:00 AM CDT
In force
3 hr
Issued by
NWS Austin/San Antonio, TX
Area
Storm-based polygon
Flood severity
None

Counties Blanco County, TX, Comal County, TX, Hays County, TX

The radar

The Austin/San Antonio radar (KEWX), 57 km from the middle of the area, began a volume at 03:12 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, 12:15 AM CDTFLASH FLOOD4 Nnw Dripping Springs, TXBELL SPRINGS ROAD AT BARTON CREEK HAS .75 FEET OF WATER OVER THE ROAD. REPORT FROM HAYSINFORMED.COM. CORRECTED APPROX. EVENT CLOSING TIME.

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

The nearest sounding before it

Del Rio, TX (KDLF), launched 00:00Z, 3.2 hours before the alert went out and 269 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 00:00Z on 2014-05-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2770 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 00:00Z on 2014-05-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -4 square meters per square second.19395878Sfc1 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
2770 J/kg
Mixed-layer CIN
-60 J/kg
Mixed-layer LCL
1606 m above ground
0-6 km bulk shear
24 kt
0-1 km storm-relative helicity
-4 m²/s²
0-3 km storm-relative helicity
-65 m²/s²
Significant tornado parameter
-0.1
Supercell composite
-0.8

Open this sounding in Storm Lab

The text

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

034 
WGUS54 KEWX 130309
FFWEWX
TXC031-091-209-130600-
/O.NEW.KEWX.FF.W.0002.140513T0309Z-140513T0600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
1009 PM CDT MON MAY 12 2014

THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SOUTHEASTERN BLANCO COUNTY IN SOUTH CENTRAL TEXAS...
  NORTH CENTRAL COMAL COUNTY IN SOUTH CENTRAL TEXAS...
  WESTERN HAYS COUNTY IN SOUTH CENTRAL TEXAS...
  THIS INCLUDES THE CITIES OF...WIMBERLEY...DRIPPING SPRINGS...

* UNTIL 100 AM CDT

* AT 1006 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  HEAVY RAINFALL CAPABLE OF PRODUCING FLASH FLOODING FROM 
  THUNDERSTORMS NEAR DRIPPING SPRINGS...MOVING EAST AT 10 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO   
  DRIFTWOOD.

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 3034 9833 3035 9818 3020 9796 2992 9805
      2998 9844

$$
3 follow-up statements
969 
WGUS74 KEWX 130457
FFSEWX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
1157 PM CDT MON MAY 12 2014

TXC031-091-209-130600-
/O.CON.KEWX.FF.W.0002.000000T0000Z-140513T0600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
HAYS TX-BLANCO TX-COMAL TX-
1157 PM CDT MON MAY 12 2014

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 100 AM CDT FOR NORTH
CENTRAL COMAL...SOUTHEASTERN BLANCO AND WESTERN HAYS COUNTIES...

AT 1155 PM CDT...NWS METEOROLOGISTS CONTINUED TO DETECT A LIGHT TO 
MODERATE RAINS ACROSS THE AREA. FLASH FLOODING WILL CONTINUE DUE TO 
EARLIER HEAVY RAINS. AN ADDITIONAL ONE QUARTER INCH OF RAIN IS 
POSSIBLE. 

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.

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 3034 9833 3035 9818 3020 9796 2992 9805
      2998 9844

$$
786 
WGUS74 KEWX 130505
FFSEWX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
1205 AM CDT TUE MAY 13 2014

TXC031-091-209-130600-
/O.CON.KEWX.FF.W.0002.000000T0000Z-140513T0600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
HAYS TX-BLANCO TX-COMAL TX-
1205 AM CDT TUE MAY 13 2014

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 100 AM CDT FOR NORTH
CENTRAL COMAL...SOUTHEASTERN BLANCO AND WESTERN HAYS COUNTIES...

AT 1146 PM CDT...NWS METEOROLOGISTS CONTINUED TO DETECT A 
THUNDERSTORM COMPLEX PRODUCING FLASH FLOODING.  AS OF MIDNIGHT 
CDT...AN AUTOMATED RAIN GAGE 8 MILES WEST OF DRIPPING SPRINGS 
REPORTED 3.66 INCHES OVER THE PAST 3 HOURS. THESE HEAVY RAINFALL 
RATES WILL LIKELY RESULT IN CONTINUED RUNOFF PROBLEMS OVER THE 
WARNING AREA.

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 3034 9833 3035 9818 3020 9796 2992 9805
      2998 9844

$$
522 
WGUS74 KEWX 130604
FFSEWX

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

TXC031-091-209-130611-
/O.EXP.KEWX.FF.W.0002.000000T0000Z-140513T0600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
HAYS TX-BLANCO TX-COMAL TX-
104 AM CDT TUE MAY 13 2014

...THE FLASH FLOOD WARNING HAS EXPIRED FOR NORTH CENTRAL COMAL...
SOUTHEASTERN BLANCO AND WESTERN HAYS COUNTIES...

ONLY PATCHY LIGHT RAIN WAS OBSERVED OVER THE AREA. NO ADDITIONAL 
FLASH FLOODING IS EXPECTED. SO...THE WARNING WAS ALLOWED TO EXPIRE.  
HOWEVER...STREAMS AND RIVERS MAY RUN A LITTLE HIGH FOR THE NEXT 
COUPLE OF HOURS DUE TO EARLIER HEAVY RAINS. RAIN GAUGE OBSERVATIONS 
SHOWED 4 INCHES OF RAIN 8 MILES WEST OF DRIPPING SPRINGS. 

LAT...LON 3034 9833 3035 9818 3020 9796 2992 9805
      2998 9844

$$

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, 10:17 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, 11:18 PM CDTFlash Flood WarningEWXHays, Travis3 hr
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.