Alert archive / Texas / Flash Flood Warnings in 2016

Flash Flood Warning 26, NWS Austin/San Antonio, TX

May 19, 2016Hays County, Texas

NWS Austin/San Antonio, TX issued this flash flood warning at May 19, 2016, 10:13 AM CDT for Hays County, Texas. It was in force for 3 hr. 2 reports 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 19, 2016, 10:13 AM CDT (15:13 UTC)
Expired
May 19, 2016, 1:15 PM CDT
In force
3 hr
Issued by
NWS Austin/San Antonio, TX
Area
Storm-based polygon
Flood severity
None

County Hays County, TX

The radar

The Austin/San Antonio radar (KEWX), 30 km from the middle of the area, began a volume at 15:16 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 19, 10:25 AM CDTFLASH FLOODSan Marcos, TXMORE THAN A DOZEN LOW WATER CROSSINGS CLOSED ACROSS THE COUNTY DUE TO HEAVY RAINS
May 19, 11:02 AM CDTFLOOD6 Sw Bee Cave, TXWATER RESCUE COMPLETED ON FITZHUGH ROAD NEAR THE HAYS AND TRAVIS COUNTY LINE

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 12:00Z, 3.2 hours before the alert went out and 255 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 2016-05-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2030 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 2016-05-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 110 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
2030 J/kg
Mixed-layer CIN
-7 J/kg
Mixed-layer LCL
661 m above ground
0-6 km bulk shear
45 kt
0-1 km storm-relative helicity
110 m²/s²
0-3 km storm-relative helicity
291 m²/s²
Significant tornado parameter
2.4
Supercell composite
14.9

Open this sounding in Storm Lab

The text

As transmitted.

241 
WGUS54 KEWX 191513
FFWEWX
TXC209-191815-
/O.NEW.KEWX.FF.W.0026.160519T1513Z-160519T1815Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
1013 AM CDT THU MAY 19 2016

THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  HAYS COUNTY IN SOUTH CENTRAL TEXAS...

* UNTIL 115 PM CDT

* AT 1008 AM CDT...EMERGENCY MANAGEMENT OFFICIALS REPORTED MODERATE
  TO HEAVY RAIN ACROSS HAYS COUNTY THAT WAS LEADING TO OVER 20 LOW
  WATER CROSSINGS BEING CLOSED. TWO INCHES TO THREE INCHES OF RAIN
  HAVE ALREADY FALLEN ON SATURATED SOILS. ADDITIONAL RAINFALL
  AMOUNTS OF ONE INCH ARE POSSIBLE IN THE WARNED AREA THROUGH THE
  NEXT TWO HOURS. WHILE SIGNIFICANT FLOODING IS NOT EXPECTED GIVEN
  CURRENT AND FUTURE RAINFALL RATES, WIDESPREAD NUISANCE FLOODING
  WILL PERSIST THROUGH THE LATE MORNING AND EARLY AFTERNOON HOURS. 

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  SAN MARCOS...WIMBERLEY...DRIPPING SPRINGS...KYLE...BUDA...WOODCREEK...
  UHLAND...NIEDERWALD...BEAR CREEK...DRIFTWOOD...HENLY...SHADY HOLLOW...
  MOUNTAIN CITY...HAYS...HAYS CITY AND MOUNT GAINOR.



PRECAUTIONARY/PREPAREDNESS ACTIONS...

TURN AROUND...DON'T DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.

&&

LAT...LON 3003 9771 2994 9780 2988 9789 2986 9790
      2986 9788 2976 9800 2985 9803 3004 9830
      3036 9817

$$

ALLEN
1 follow-up statement
982 
WGUS74 KEWX 191819
FFSEWX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
119 PM CDT THU MAY 19 2016

TXC209-191827-
/O.EXP.KEWX.FF.W.0026.000000T0000Z-160519T1815Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
HAYS TX-
119 PM CDT THU MAY 19 2016

...THE FLASH FLOOD WARNING FOR HAYS COUNTY HAS EXPIRED...

THE HEAVY RAIN HAS ENDED BUT LOW WATER CROSSINGS ACROSS THE COUNTY
REMAIN DANGEROUS AND MANY ARE CLOSED.  PLEASE CONTINUE TO HEED ANY
REMAINING ROAD CLOSURES AND DO NOT DRIVE AROUND BARRICADES.

LAT...LON 3003 9771 2994 9780 2988 9789 2986 9790
      2986 9788 2976 9800 2985 9803 3004 9830
      3036 9817

$$

ALLEN

The office that day

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

IssuedProductOfficeCountiesLasted
May 19, 2:23 AM CDTRiver Flood WarningEWXKarnes3 days
May 19, 2:39 AM CDTSpecial Weather StatementEWXVal Verde51 min
May 19, 3:06 AM CDTSpecial Weather StatementEWXVal Verde39 min
May 19, 3:44 AM CDTSevere Thunderstorm WarningEWXVal Verde31 min
May 19, 5:08 AM CDTFlash Flood WarningEWXEdwards, Kerr, Real3 hr
May 19, 5:14 AM CDTSevere Thunderstorm WarningEWXDimmit31 min
May 19, 5:48 AM CDTFlash Flood WarningEWXBandera, Kerr5 hr
May 19, 6:33 AM CDTFlash Flood WarningEWXGillespie, Kendall5 hr
May 19, 6:39 AM CDTSpecial Weather StatementEWXDimmit51 min
May 19, 6:47 AM CDTSevere Thunderstorm WarningEWXDimmit43 min
May 19, 7:24 AM CDTSevere Thunderstorm WarningEWXDimmit51 min
May 19, 7:31 AM CDTAreal Flood AdvisoryEWXBexar, Comal, Hays, Travis, Williamson3 hr
May 19, 8:41 AM CDTSpecial Weather StatementEWXGuadalupe49 min
May 19, 8:56 AM CDTRiver Flood WarningEWXKerr27 hr
May 19, 9:21 AM CDTAreal Flood AdvisoryEWXGuadalupe3 hr
May 19, 10:54 AM CDTAreal Flood AdvisoryEWXBexar, Comal, Hays, Travis, Williamson3 hr
May 19, 10:59 AM CDTAreal Flood AdvisoryEWXBastrop, Caldwell, Lee3 hr
May 19, 11:03 AM CDTAreal Flood AdvisoryEWXGonzales, Wilson3 hr
May 19, 11:18 AM CDTFlash Flood WarningEWXWilliamson3 hr
May 19, 11:38 AM CDTFlash Flood WarningEWXBastrop, Caldwell, Guadalupe3 hr
May 19, 11:41 AM CDTSpecial Weather StatementEWXLavaca49 min
May 19, 2:06 PM CDTRiver Flood WarningEWXTravis18 hr
May 19, 2:12 PM CDTAreal Flood AdvisoryEWXComal, Hays, Travis, Williamson3 hr
May 19, 2:47 PM CDTAreal Flood AdvisoryEWXBastrop, Caldwell, Guadalupe3 hr
May 19, 3:38 PM CDTRiver Flood WarningEWXDeWitt4 days

Nearby

Flash Flood Warnings in Texas, 2016Every flash flood warning in 2016

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.