Alert archive / Texas / Flash Flood Warnings in 2017

Flash Flood Warning 19, NWS Austin/San Antonio, TX

May 28, 2017Edwards County, Kinney County, Val Verde County, Texas

NWS Austin/San Antonio, TX issued this flash flood warning at May 28, 2017, 6:44 PM CDT for Edwards County, Kinney County, Val Verde 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 28, 2017, 6:44 PM CDT (23:44 UTC)
Expired
May 28, 2017, 10:15 PM CDT
In force
4 hr
Issued by
NWS Austin/San Antonio, TX
Area
Storm-based polygon
Flood severity
None

Counties Edwards County, TX, Kinney County, TX, Val Verde County, TX

The radar

The Laughlin AFB radar (KDFX), 53 km from the middle of the area, began a volume at 23:46 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, 11.7 hours before the alert went out and 19 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 2017-05-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3017 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 2017-05-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 83 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
3017 J/kg
Mixed-layer CIN
-339 J/kg
Mixed-layer LCL
1097 m above ground
0-6 km bulk shear
35 kt
0-1 km storm-relative helicity
83 m²/s²
0-3 km storm-relative helicity
100 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.0

Open this sounding in Storm Lab

The text

As transmitted.

485 
WGUS54 KEWX 282344
FFWEWX
TXC137-271-465-290315-
/O.NEW.KEWX.FF.W.0019.170528T2344Z-170529T0315Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Austin/San Antonio TX
644 PM CDT SUN MAY 28 2017

The National Weather Service in Austin San Antonio has issued a

* Flash Flood Warning for...
  Kinney County in south central Texas...
  Western Edwards County in south central Texas...
  Eastern Val Verde County in south central Texas...

* Until 1015 PM CDT

* At 640 PM CDT, Doppler radar indicated numerous thunderstorms 
  producing heavy rain west of a Rocksprings to Brackettville line 
  and east of a Juno to Del Rio and Rio Grande line. Up to three 
  inches of rain have already fallen. Flash flooding is expected in 
  the warned area. This will impact the Devils and West Nueces River 
  basins and Sycamore Creek. Federal highways 90, 277, and 377 will 
  impacted as will FM 2528 and 3008. 

* Some locations that will experience flooding include...
  Del Rio, Brackettville, Spofford, Loma Alta, Juno, Amistad Village,
  Laughlin AFB, Amanda, Lake View, Flour Mills, Val Verde Park,
  Anacacho, Alamo Village, Standart, Carta Valley, Cienegas Terrace,
  Devils Shores, Pafford Crossing, Bakers Crossing and Kickapoo
  Cavern State Park.

Additional rainfall amounts of 1 to 4 inches are possible in the 
warned area.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Be especially cautious at night when it is harder to recognize the
dangers of flooding.

Excessive runoff from heavy rainfall will cause flooding of small
creeks and streams, country roads, farmland, and other low lying
spots.

In hilly terrain there are hundreds of low water crossings which are
potentially dangerous in heavy rain. Do not attempt to cross flooded
roads. Find an alternate route.

Flooding is occurring or is imminent. It is important to know where
you are relative to streams, rivers, or creeks which can become
killers in heavy rains. Campers and hikers should avoid streams or
creeks.

&&

LAT...LON 3029 10029 2910 10030 2909 10067 2917 10078
      2920 10077 2926 10081 2928 10087 2931 10089
      2937 10101 2961 10113 3029 10122

$$

CP
2 follow-up statements
524 
WGUS74 KEWX 290207
FFSEWX

Flash Flood Statement
National Weather Service Austin/San Antonio TX
907 PM CDT SUN MAY 28 2017

TXC137-271-465-290315-
/O.CON.KEWX.FF.W.0019.000000T0000Z-170529T0315Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Kinney TX-Edwards TX-Val Verde TX-
907 PM CDT SUN MAY 28 2017

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1015 PM CDT FOR
KINNEY...WESTERN EDWARDS AND EASTERN VAL VERDE COUNTIES...

At 906 PM CDT, Doppler radar indicated very isolated thunderstorms 
producing heavy rain across the warned area. Up to four inches of 
rain have already fallen. Flash flooding is expected to begin 
shortly.

Some locations that will experience flooding include...
Del Rio, Brackettville, Spofford, Loma Alta, Juno, Amistad Village,
Laughlin AFB, Amanda, Lake View, Flour Mills, Val Verde Park,
Anacacho, Alamo Village, Standart, Carta Valley, Cienegas Terrace,
Devils Shores, Pafford Crossing, Bakers Crossing and Kickapoo Cavern
State Park.

Additional rainfall amounts of up to 1 inch are possible in the 
warned area.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Be especially cautious at night when it is harder to recognize the
dangers of flooding.

Excessive runoff from heavy rainfall will cause flooding of small
creeks and streams, country roads, farmland, and other low lying
spots.

In hilly terrain there are hundreds of low water crossings which are
potentially dangerous in heavy rain. Do not attempt to cross flooded
roads. Find an alternate route.

Flooding is occurring or is imminent. It is important to know where
you are relative to streams, rivers, or creeks which can become
killers in heavy rains. Campers and hikers should avoid streams or
creeks.

&&

LAT...LON 3029 10029 2910 10030 2909 10067 2917 10078
      2920 10077 2926 10081 2928 10087 2931 10089
      2937 10101 2961 10113 3029 10122

$$

CP
004 
WGUS74 KEWX 290313
FFSEWX

Flash Flood Statement
National Weather Service Austin/San Antonio TX
1013 PM CDT SUN MAY 28 2017

TXC137-271-465-290321-
/O.EXP.KEWX.FF.W.0019.000000T0000Z-170529T0315Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Kinney TX-Edwards TX-Val Verde TX-
1013 PM CDT SUN MAY 28 2017

...THE FLASH FLOOD WARNING FOR KINNEY...WESTERN EDWARDS AND EASTERN
VAL VERDE COUNTIES WILL EXPIRE AT 1015 PM CDT...

Except for a small thunderstorm moving rapidly to the east from Juno 
to Rocksprings, the heavy rain has ended. Flash flooding is no 
longer expected to pose a threat. Please continue to heed any 
remaining road closures.

LAT...LON 3029 10029 2910 10030 2909 10067 2917 10078
      2920 10077 2926 10081 2928 10087 2931 10089
      2937 10101 2961 10113 3029 10122

$$

CP

The office that day

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

IssuedProductOfficeCountiesLasted
May 28, 12:05 AM CDTSpecial Weather StatementEWXBurnet40 min
May 28, 2:43 PM CDTSpecial Weather StatementEWXReal47 min
May 28, 2:53 PM CDTSevere Thunderstorm WarningEWXEdwards, Real82 min
May 28, 3:13 PM CDTSevere Thunderstorm WarningEWXEdwards, Kinney, Val Verde77 min
May 28, 3:25 PM CDTFlash Flood WarningEWXEdwards, Kinney, Real, Val Verde4 hr
May 28, 3:57 PM CDTSevere Thunderstorm WarningEWXKerr78 min
May 28, 4:12 PM CDTSpecial Weather StatementEWXGillespie48 min
May 28, 4:12 PM CDTSevere Thunderstorm WarningEWXEdwards, Real78 min
May 28, 4:31 PM CDTSevere Thunderstorm WarningEWXEdwards, Kinney, Val Verde74 min
May 28, 4:48 PM CDTSpecial Weather StatementEWXBurnet42 min
May 28, 4:51 PM CDTAreal Flood AdvisoryEWXKerr, Real3 hr
May 28, 4:54 PM CDTSevere Thunderstorm WarningEWXBlanco, Burnet, Gillespie47 min
May 28, 4:57 PM CDTSevere Thunderstorm WarningEWXBurnet, Williamson46 min
May 28, 5:05 PM CDTAreal Flood AdvisoryEWXBlanco, Burnet, Gillespie3 hr
May 28, 5:19 PM CDTAreal Flood AdvisoryEWXBurnet, Williamson3 hr
May 28, 5:29 PM CDTSevere Thunderstorm WarningEWXBandera, Real31 min
May 28, 5:33 PM CDTFlash Flood WarningEWXEdwards, Kerr, Real, Uvalde3 hr
May 28, 5:40 PM CDTSevere Thunderstorm WarningEWXEdwards, Val Verde80 min
May 28, 5:41 PM CDTSevere Thunderstorm WarningEWXKinney, Val Verde79 min
May 28, 5:42 PM CDTFlash Flood WarningEWXBlanco, Burnet, Gillespie, Kerr4 hr
May 28, 5:56 PM CDTAreal Flood AdvisoryEWXKinney, Val Verde3 hr
May 28, 5:59 PM CDTAreal Flood AdvisoryEWXEdwards, Val Verde3 hr
May 28, 6:09 PM CDTSpecial Weather StatementEWXKerr51 min
May 28, 6:12 PM CDTSevere Thunderstorm WarningEWXTravis, Williamson48 min
May 28, 6:28 PM CDTSevere Thunderstorm WarningEWXBandera, Kendall, Kerr62 min
May 28, 6:36 PM CDTSevere Thunderstorm WarningEWXFrio, Medina, Uvalde, Zavala69 min
May 28, 6:58 PM CDTSpecial Weather StatementEWXDimmit47 min

Nearby

Flash Flood Warnings in Texas, 2017Every flash flood warning in 2017

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.