Alert archive / Texas / Flash Flood Warnings in 2014

Flash Flood Warning 41, NWS Austin/San Antonio, TX

August 18, 2014Bandera County, Texas

NWS Austin/San Antonio, TX issued this flash flood warning at Aug 18, 2014, 11:13 PM CDT for Bandera 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 18, 2014, 11:13 PM CDT (04:13 UTC)
Expired
Aug 19, 2014, 2:15 AM CDT
In force
3 hr
Issued by
NWS Austin/San Antonio, TX
Area
Storm-based polygon
Flood severity
None

County Bandera County, TX

The radar

The Austin/San Antonio radar (KEWX), 97 km from the middle of the area, began a volume at 04:13 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 00:00Z, 4.2 hours before the alert went out and 179 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 2014-08-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1083 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 2014-08-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 3 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
1083 J/kg
Mixed-layer CIN
-24 J/kg
Mixed-layer LCL
2218 m above ground
0-6 km bulk shear
14 kt
0-1 km storm-relative helicity
3 m²/s²
0-3 km storm-relative helicity
34 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.

685 
WGUS54 KEWX 190413
FFWEWX
TXC019-190715-
/O.NEW.KEWX.FF.W.0041.140819T0413Z-140819T0715Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
1113 PM CDT MON AUG 18 2014

THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  EASTERN BANDERA COUNTY IN SOUTH CENTRAL TEXAS...
  THIS INCLUDES THE CITY OF BANDERA...

* UNTIL 215 AM CDT

* AT 1109 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS HAVE
  DETERMINED THAT RAINFALL ESTIMATES FROM DOPPLER RADAR INDICATE
  FLASH FLOODING FROM A THUNDERSTORM OVER THE WARNED AREA.

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.

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY. MOVE TO HIGHER GROUND.

&&

LAT...LON 2989 9918 2975 9886 2960 9890 2962 9895
      2963 9909 2965 9910

$$
1 follow-up statement
786 
WGUS74 KEWX 190620
FFSEWX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
120 AM CDT TUE AUG 19 2014

TXC019-190630-
/O.CAN.KEWX.FF.W.0041.000000T0000Z-140819T0715Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BANDERA TX-
120 AM CDT TUE AUG 19 2014

...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR EASTERN BANDERA
COUNTY...

LAT...LON 2989 9918 2975 9886 2960 9890 2962 9895
      2963 9909 2965 9910

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 18, 8:42 PM CDTSpecial Weather StatementEWXVal Verde48 min
Aug 18, 8:48 PM CDTSpecial Weather StatementEWXVal Verde42 min
Aug 18, 9:29 PM CDTSpecial Weather StatementEWXBandera46 min
Aug 18, 9:53 PM CDTFlash Flood WarningEWXBandera3 hr
Aug 18, 10:08 PM CDTAreal Flood AdvisoryEWXMedina, Uvalde112 min
Aug 18, 11:08 PM CDTAreal Flood AdvisoryEWXUvalde112 min
Aug 18, 11:30 PM CDTSpecial Weather StatementEWXBexar, Medina60 min
Aug 19, 12:55 AM CDTAreal Flood AdvisoryEWXEdwards, Kerr, Real2 hr
Aug 19, 1:38 AM CDTFlash Flood WarningEWXEdwards, Kerr, Real3 hr
Aug 19, 2:08 AM CDTSpecial Weather StatementEWXKinney52 min
Aug 19, 3:00 AM CDTAreal Flood AdvisoryEWXEdwards, Kinney, Real, Uvalde2 hr
Aug 19, 3:11 AM CDTFlash Flood WarningEWXBandera, Uvalde3 hr
Aug 19, 6:57 AM CDTAreal Flood AdvisoryEWXUvalde2 hr
Aug 19, 7:21 AM CDTAreal Flood AdvisoryEWXBandera, Medina2 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.