Alert archive / Texas / Flash Flood Warnings in 2016

Flash Flood Warning 34, NWS Austin/San Antonio, TX

May 27, 2016Hays County, Travis County, Williamson County, Texas

NWS Austin/San Antonio, TX issued this flash flood warning at May 27, 2016, 1:00 AM CDT for Hays County, Travis County, Williamson 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 27, 2016, 1:00 AM CDT (06:00 UTC)
Expired
May 27, 2016, 3:45 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, Williamson County, TX

The radar

The Austin/San Antonio radar (KEWX), 58 km from the middle of the area, began a volume at 06:01 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 27, 2:40 AM CDTFLASH FLOOD2 E Buda, TXHIGH WATER RESCUES ONGOING IN BUDA...WITH MANY LOW WATER CROSSINGS FLOODED.

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, 6.0 hours before the alert went out and 279 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 2016-05-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2934 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 2016-05-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 129 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
2934 J/kg
Mixed-layer CIN
-101 J/kg
Mixed-layer LCL
855 m above ground
0-6 km bulk shear
27 kt
0-1 km storm-relative helicity
129 m²/s²
0-3 km storm-relative helicity
180 m²/s²
Significant tornado parameter
0.9
Supercell composite
8.6

Open this sounding in Storm Lab

The text

As transmitted.

128 
WGUS54 KEWX 270600
FFWEWX
TXC209-453-491-270845-
/O.NEW.KEWX.FF.W.0034.160527T0600Z-160527T0845Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
100 AM CDT FRI MAY 27 2016

THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS ISSUED A

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

* UNTIL 345 AM CDT

* AT 1251 AM CDT...DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING
  HEAVY RAIN ACROSS MUCH OF THE AUSTIN METRO AREA. RAINFALL AMOUNTS
  OVER 8 INCHES OF RAIN HAVE FALLEN ALONG DRY CREEK...AND SEVERE
  FLASH FLOODING IS LIKELY OCCURRING OVER SOUTHEASTERN TRAVIS
  COUNTY. ACROSS MOST OF THE CITY OF AUSTIN AND SURROUNDING
  COMMUNITIES...RAINFALL AMOUNTS SO FAR HAVE BEEN MAINLY 1 TO 2
  INCHES. HOWEVER...AN AREA OF HEAVY RAIN CONCENTRATING OVER MUCH OF
  THE CITY WILL LIKELY PRODUCE ANOTHER 1 TO 3 INCHES BY 230 AM.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  AUSTIN...ROUND ROCK...CEDAR PARK...PFLUGERVILLE...SAN MARCOS...ELGIN...
  DRIPPING SPRINGS...WINDEMERE...TANGLEWOOD FOREST...ANDERSON MILL...
  AUSTIN BERGSTROM INT AP...KYLE...LEANDER...LAKEWAY...BUDA...LAGO VISTA...
  MANOR...BEE CAVE...WEST LAKE HILLS AND THE HILLS.

FLOOD WATERS ARE MOVING DOWN THE ONION CREEK...DRY CREEK...WILBARGER
CREEK AND NUMEROUS OTHER TRIBUTARIES THAT EMPTY INTO THE THE
COLORADO RIVER BELOW AUSTIN.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING.

&&

LAT...LON 3043 9736 3020 9750 2988 9789 2986 9789
      2982 9793 3003 9802 3014 9825 3036 9817
      3049 9808 3058 9783

$$

MO
1 follow-up statement
862 
WGUS74 KEWX 270733
FFSEWX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
233 AM CDT FRI MAY 27 2016

TXC209-453-491-270845-
/O.CON.KEWX.FF.W.0034.000000T0000Z-160527T0845Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
TRAVIS TX-WILLIAMSON TX-HAYS TX-
233 AM CDT FRI MAY 27 2016

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 345 AM CDT FOR
TRAVIS...SOUTHWESTERN WILLIAMSON AND HAYS COUNTIES...

AT 218 AM CDT...AUSTIN FEWS REPORTS CONTINUED TO INDICATE NUMEROUS
ROAD CLOSURES OVER PARTS OF AUSTIN METRO AREA. FLOODING CONCERNS ARE
ESPECIALLY SERIOUS OVER SOUTHEAST TRAVIS COUNTY ALONG MAHA
CREEK...DRY CREEK...LOWER PORTIONS OF ONION CREEK BELOW I-
35...GILLELAND CREEK...AND OTHER TRIBUTARIES OF THE COLORADO RIVER
EAST OF I-35. UP TO 10 INCHES OF RAIN FELL OVER SOME OF THESE
AREAS...AND TRAVEL IS STRONGLY DISCOURAGED. 

OVER THE REST OF THE WARNED AREA OF METRO AUSTIN...2 TO 3 INCHES OF
RAIN HAVE FALLEN AND WILL LIKELY CREATE FLOODING CONCERNS THROUGH AT
LEAST 3 AM CDT. NO ADDITIONAL RAINFALL AMOUNTS ARE EXPECTED HOWEVER.

SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
AUSTIN...ROUND ROCK...CEDAR PARK...PFLUGERVILLE...SAN MARCOS...ELGIN...
DRIPPING SPRINGS...WINDEMERE...TANGLEWOOD FOREST...ANDERSON MILL...AUSTIN
BERGSTROM INT AP...KYLE...LEANDER...LAKEWAY...BUDA...LAGO VISTA...MANOR...
BEE CAVE...WEST LAKE HILLS AND THE HILLS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING.

&&

LAT...LON 3043 9736 3020 9750 2988 9789 2986 9789
      2982 9793 3003 9802 3014 9825 3036 9817
      3049 9808 3058 9783

$$

MO

The office that day

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

IssuedProductOfficeCountiesLasted
May 26, 7:00 PM CDTSpecial Weather StatementEWXFayette30 min
May 26, 7:00 PM CDTSevere Thunderstorm WarningEWXVal Verde45 min
May 26, 7:23 PM CDTFlash Flood WarningEWXBastrop, Fayette, Lee3 hr
May 26, 7:44 PM CDTSevere Thunderstorm WarningEWXEdwards, Kinney, Real, Val Verde49 min
May 26, 8:27 PM CDTSpecial Weather StatementEWXFayette33 min
May 26, 8:36 PM CDTSpecial Weather StatementEWXEdwards39 min
May 26, 8:48 PM CDTSevere Thunderstorm WarningEWXFayette, Lee42 min
May 26, 9:05 PM CDTSpecial Weather StatementEWXKerr, Real40 min
May 26, 9:07 PM CDTAreal Flood AdvisoryEWXHays, Travis113 min
May 26, 9:21 PM CDTSpecial Weather StatementEWXTravis39 min
May 26, 9:23 PM CDTSevere Thunderstorm WarningEWXBandera, Edwards, Gillespie, Kerr, Real52 min
May 26, 9:30 PM CDTSpecial Weather StatementEWXFayette30 min
May 26, 9:46 PM CDTSpecial Weather StatementEWXTravis44 min
May 26, 10:06 PM CDTFlash Flood WarningEWXHays, Travis3 hr
May 26, 10:06 PM CDTSevere Thunderstorm WarningEWXBastrop, Hays, Travis39 min
May 26, 10:10 PM CDTSevere Thunderstorm WarningEWXGillespie, Kendall, Kerr, Llano65 min
May 26, 10:16 PM CDTFlash Flood WarningEWXBastrop, Fayette, Lee3 hr
May 26, 10:43 PM CDTSevere Thunderstorm WarningEWXBastrop, Caldwell, Hays, Travis47 min
May 26, 10:53 PM CDTSevere Thunderstorm WarningEWXBlanco, Burnet, Gillespie, Kendall, Kerr, Llano52 min
May 26, 11:15 PM CDTAreal Flood AdvisoryEWXBlanco, Gillespie, Kendall, Kerr3 hr
May 26, 11:26 PM CDTSevere Thunderstorm WarningEWXBastrop, Caldwell, Hays, Travis49 min
May 26, 11:28 PM CDTRiver Flood WarningEWXTravis20 hr
May 26, 11:37 PM CDTSpecial Weather StatementEWXWilliamson53 min
May 26, 11:51 PM CDTSpecial Weather StatementEWXBlanco54 min
May 27, 12:03 AM CDTFlash Flood WarningEWXBlanco, Gillespie, Kendall, Kerr4 hr
May 27, 12:03 AM CDTSevere Thunderstorm WarningEWXBlanco, Gillespie, Kendall57 min
May 27, 12:10 AM CDTRiver Flood WarningEWXFayette69 hr
May 27, 12:11 AM CDTSpecial Weather StatementEWXWilliamson49 min
May 27, 12:19 AM CDTRiver Flood WarningEWXBastrop32 hr
May 27, 12:21 AM CDTAreal Flood AdvisoryEWXHays, Travis, Williamson54 min
May 27, 12:43 AM CDTSpecial Weather StatementEWXBastrop47 min
May 27, 12:47 AM CDTTornado WarningEWXBastrop28 min
May 27, 1:03 AM CDTSpecial Weather StatementEWXBlanco42 min
May 27, 1:13 AM CDTFlash Flood WarningEWXBastrop, Caldwell, Fayette, Lee15 hr
May 27, 1:46 AM CDTSevere Thunderstorm WarningEWXBastrop, Lee59 min
May 27, 1:52 AM CDTSevere Thunderstorm WarningEWXBastrop, Caldwell, Fayette, Gonzales53 min
May 27, 1:58 AM CDTRiver Flood WarningEWXBastrop, Fayette54 hr
May 27, 2:42 AM CDTSevere Thunderstorm WarningEWXFayette63 min
May 27, 3:28 AM CDTFlash Flood WarningEWXHays, Travis11 hr
May 27, 4:34 PM CDTSpecial Weather StatementEWXLavaca56 min
May 27, 4:50 PM CDTAreal Flood AdvisoryEWXLavaca3 hr
May 27, 5:27 PM CDTSpecial Weather StatementEWXLavaca63 min
May 27, 5:37 PM CDTFlash Flood WarningEWXLavaca3 hr
May 27, 5:46 PM CDTSpecial Weather StatementEWXDeWitt44 min
May 27, 6:08 PM CDTAreal Flood AdvisoryEWXDeWitt2 hr
May 27, 6:46 PM CDTSpecial Weather StatementEWXDeWitt44 min

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.