Alert archive / Texas / Flash Flood Warnings in 2014

Flash Flood Warning 52, NWS Austin/San Antonio, TX

September 18, 20144 counties in Texas

NWS Austin/San Antonio, TX issued this flash flood warning at Sep 18, 2014, 1:23 AM CDT for 4 counties in Texas. It was in force for 4 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
Sep 18, 2014, 1:23 AM CDT (06:23 UTC)
Expired
Sep 18, 2014, 5:15 AM CDT
In force
4 hr
Issued by
NWS Austin/San Antonio, TX
Area
Storm-based polygon
Flood severity
None

Counties Blanco County, TX, Burnet County, TX, Hays County, TX, Travis County, TX

The radar

The Ft Hood radar (KGRK), 69 km from the middle of the area, began a volume at 06:23 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
Sep 18, 2:44 AM CDTFLASH FLOODAustin, TXATXFLOODS REPORTS MULTIPLE ROADS CLOSED DUE TO FLOODING ACROSS THE CITY OF AUSTIN. RAINFALL TOTALS OVER 4-5 INCHES HAVE BEEN REPORTED.

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

The nearest sounding before it

Fort Worth, TX (KFWD), launched 00:00Z, 6.4 hours before the alert went out and 277 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, Fort Worth, TX at 00:00Z on 2014-09-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1378 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, Fort Worth, TX at 00:00Z on 2014-09-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 50 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
1378 J/kg
Mixed-layer CIN
-22 J/kg
Mixed-layer LCL
1378 m above ground
0-6 km bulk shear
25 kt
0-1 km storm-relative helicity
50 m²/s²
0-3 km storm-relative helicity
96 m²/s²
Significant tornado parameter
0.2
Supercell composite
1.2

Open this sounding in Storm Lab

The text

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

968 
WGUS54 KEWX 180623
FFWEWX
TXC031-053-209-453-181015-
/O.NEW.KEWX.FF.W.0052.140918T0623Z-140918T1015Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
123 AM CDT THU SEP 18 2014

THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  NORTHEASTERN BLANCO COUNTY IN SOUTH CENTRAL TEXAS...
  SOUTH CENTRAL BURNET COUNTY IN SOUTH CENTRAL TEXAS...
  NORTHWESTERN HAYS COUNTY IN SOUTH CENTRAL TEXAS...
  CENTRAL TRAVIS COUNTY IN SOUTH CENTRAL TEXAS...

* UNTIL 515 AM CDT

* AT 122 AM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS HAVE   
  DETERMINED THAT DOPPLER RADAR ESTIMATES ARE SUFFICIENT TO PRODUCE
  FLASH FLOODING FROM SLOW MOVING THUNDERSTORMS OVER THE SOUTHERN 
  AND WESTERN PORTIONS OF THE AUSTIN METRO AREA. HEAVY RAINFALL RATES
  OF 4 TO 6 INCHES PER HOUR AT TIMES HAVE RESULTED IN A FEW AREAS
  AROUND AUSTIN RECEIVING AROUND 3 INCHES OF RAIN IN JUST ONE HOUR.

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  SMITHWICK...PEDERNALES FALLS STATE PARK...CYPRESS MILL...WEST LAKE
  HILLS...ROLLINGWOOD...MANSFIELD DAM...LAKEWAY...BEE CAVE AND
  SPICEWOOD

PRECAUTIONARY/PREPAREDNESS ACTIONS...

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...URBAN AREAS...HIGHWAYS...STREETS AND UNDERPASSES
AS WELL AS OTHER DRAINAGE AREAS AND LOW LYING SPOTS.

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 3059 9811 3050 9808 3040 9812 3033 9780
      3042 9756 3015 9769 3023 9823 3052 9833

$$
3 follow-up statements
918 
WGUS74 KEWX 180700
FFSEWX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
200 AM CDT THU SEP 18 2014

TXC031-053-209-453-181015-
/O.CON.KEWX.FF.W.0052.000000T0000Z-140918T1015Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
HAYS TX-TRAVIS TX-BURNET TX-BLANCO TX-
200 AM CDT THU SEP 18 2014

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 515 AM CDT FOR
NORTHEASTERN BLANCO...SOUTH CENTRAL BURNET...CENTRAL TRAVIS AND
NORTHWESTERN HAYS COUNTIES...

AT 159 AM CDT...NWS METEOROLOGISTS CONTINUED TO DETECT SLOW MOVING 
THUNDERSTORMS PRODUCING VERY HEAVY RAINS AND FLASH FLOODING OVER THE 
WARNED AREA. AT 147 PM...BULL CREEK REPORTED A STAGE OF 6.03 FEET. 
THE CREEK IS LIKELY TO CONTINUE RISING TO NEAR 10 FEET BEFORE 
SUBSIDING. NUMEROUS HEAVY RAINFALL AMOUNTS OF 3 TO 4 INCHES IN AN 
HOURS TIME HAVE BEEN REPORTED FROM THE SOUTHERN PART OF LAKE TRAVIS 
TO THE WESTERN PART OF AUSTIN NEAR BULL CREEK. THE HEAVY RAINFALL 
RATES WILL CONTINUE TO SHIFT SOUTH INTO SOUTH AUSTIN TOWARD 
PEDERNALES FALLS STATE PARK AND TANGLEWOOD FOREST THROUGH 3 AM CDT.

LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO SMITHWICK...
CYPRESS MILL AND SPICEWOOD

PRECAUTIONARY/PREPAREDNESS ACTIONS...

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...URBAN AREAS...HIGHWAYS...STREETS AND UNDERPASSES
AS WELL AS OTHER DRAINAGE AREAS AND LOW LYING SPOTS.

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 3059 9811 3050 9808 3040 9812 3033 9780
      3042 9756 3015 9769 3023 9823 3052 9833

$$
788 
WGUS74 KEWX 180703
FFSEWX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
203 AM CDT THU SEP 18 2014

TXC031-053-209-453-181015-
/O.CON.KEWX.FF.W.0052.000000T0000Z-140918T1015Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
HAYS TX-TRAVIS TX-BURNET TX-BLANCO TX-
203 AM CDT THU SEP 18 2014

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 515 AM CDT FOR
NORTHEASTERN BLANCO...SOUTH CENTRAL BURNET...CENTRAL TRAVIS AND
NORTHWESTERN HAYS COUNTIES...

AT 159 AM CDT...A THUNDERSTORM PRODUCING VERY HEAVY RAIN WAS REPORTED
OVER THE WARNED AREA. NWS METEOROLOGISTS CONTINUED TO DETECT SLOW 
MOVING THUNDERSTORMS PRODUCING VERY HEAVY RAINS AND FLASH FLOODING 
OVER THE WARNED AREA. AT 147 AM CDT...BULL CREEK REPORTED A STAGE OF 
6.03 FEET. THE CREEK IS LIKELY TO CONTINUE RISING TO NEAR 10 FEET 
BEFORE SUBSIDING. NUMEROUS HEAVY RAINFALL AMOUNTS OF 3 TO 4 INCHES 
IN AN HOURS TIME HAVE BEEN REPORTED FROM THE SOUTHERN PART OF LAKE 
TRAVIS TO THE WESTERN PART OF AUSTIN NEAR BULL CREEK. THE HEAVY 
RAINFALL RATES WILL CONTINUE TO SHIFT SOUTH INTO SOUTH AUSTIN TOWARD 
PEDERNALES FALLS STATE PARK AND TANGLEWOOD FOREST THROUGH 3 AM CDT.

LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO 
SMITHWICK...CYPRESS MILL AND SPICEWOOD.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL 
CREEKS AND STREAMS...URBAN AREAS...HIGHWAYS...STREETS AND UNDERPASSES
AS WELL AS OTHER DRAINAGE AREAS AND LOW LYING SPOTS.

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 3059 9811 3050 9808 3040 9812 3033 9780
      3042 9756 3015 9769 3023 9823 3052 9833

$$
419 
WGUS74 KEWX 180922
FFSEWX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
422 AM CDT THU SEP 18 2014

TXC031-053-209-453-181015-
/O.CON.KEWX.FF.W.0052.000000T0000Z-140918T1015Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
HAYS TX-TRAVIS TX-BURNET TX-BLANCO TX-
422 AM CDT THU SEP 18 2014

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 515 AM CDT FOR
NORTHEASTERN BLANCO...SOUTH CENTRAL BURNET...CENTRAL TRAVIS AND
NORTHWESTERN HAYS COUNTIES...

AT 408 AM CDT...SEVERAL ROADS AND LOW WATER CROSSINGS REMAIN FLOODED 
ACROSS THE WARNED AREA.  AREAS ESPECIALLY IN SOUTHERN TRAVIS COUNTY 
HAVE SEEN 5 TO 6 INCHES OF RAIN...MUCH OF WHICH FELL IN 1 HOURS 
TIME. THIS CREATED MASSIVE RUNOFF AND HAS LEAD TO FLASH FLOODING.  
SEVERAL SWIFT WATER RESCUES HAVE BEEN COMPLETED AND SOME ARE STILL 
ONGOING ACROSS THE SOUTHERN HALF OF TRAVIS COUNTY. AREAS NEAR LAKE 
TRAVIS...LAKE AUSTIN...AND BEE CAVE SAW THE HIGHEST RAIN TOTALS. 
SOME CREEKS IN AUSTIN ARE RUNNING VERY HIGH AND HAVE OVERTOPPED 
THEIR BANKS. 

HEAVY RAINFALL HAS PUSHED SOUTH OF THE WARNED AREA...SO NO 
ADDITIONAL HEAVY RAIN IS EXPECTED OVER THE NEXT FEW HOURS. THIS 
SHOULD ALLOW THE WATER TO RECEDE.  SOME ROADS WILL CONTINUE TO BE 
FLOODED THROUGH THE EARLY MORNING HOURS HOWEVER.  MOTORISTS SHOULD CONSIDER 
DELAYING THEIR MORNING COMMUTE UNTIL ROADS ARE SAFE.

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.

MOST FLOOD DEATHS OCCUR IN AUTOMOBILES. NEVER DRIVE YOUR VEHICLE INTO
AREAS WHERE THE WATER COVERS THE ROADWAY. FLOOD WATERS ARE USUALLY
DEEPER THAN THEY APPEAR. JUST ONE FOOT OF FLOWING WATER IS POWERFUL
ENOUGH TO SWEEP VEHICLES OFF THE ROAD. WHEN ENCOUNTERING FLOODED
ROADS MAKE THE SMART CHOICE...TURN AROUND...DONT DROWN.

&&

LAT...LON 3059 9811 3050 9808 3040 9812 3033 9780
      3042 9756 3015 9769 3023 9823 3052 9833

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 17, 7:11 PM CDTSpecial Weather StatementEWXFayette94 min
Sep 17, 7:15 PM CDTAreal Flood AdvisoryEWXFayette105 min
Sep 17, 8:01 PM CDTFlash Flood WarningEWXFayette, Gonzales119 min
Sep 17, 9:37 PM CDTAreal Flood AdvisoryEWXBastrop, Fayette, Lee113 min
Sep 17, 10:41 PM CDTSpecial Weather StatementEWXWilliamson49 min
Sep 17, 10:52 PM CDTAreal Flood AdvisoryEWXBurnet, Williamson2 hr
Sep 17, 11:35 PM CDTSpecial Weather StatementEWXWilliamson40 min
Sep 17, 11:42 PM CDTAreal Flood AdvisoryEWXBurnet, Travis, Williamson3 hr
Sep 17, 11:52 PM CDTFlash Flood WarningEWXTravis, Williamson4 hr
Sep 18, 12:16 AM CDTSpecial Weather StatementEWXWilliamson74 min
Sep 18, 12:36 AM CDTSpecial Weather StatementEWXTravis69 min
Sep 18, 1:07 AM CDTAreal Flood AdvisoryEWXBlanco, Burnet113 min
Sep 18, 1:52 AM CDTSpecial Weather StatementEWXTravis68 min
Sep 18, 2:19 AM CDTFlash Flood WarningEWXBastrop, Caldwell, Hays, Travis3 hr
Sep 18, 2:34 AM CDTSpecial Weather StatementEWXHays56 min
Sep 18, 2:37 AM CDTAreal Flood AdvisoryEWXBlanco113 min
Sep 18, 2:56 AM CDTSpecial Weather StatementEWXCaldwell, Hays64 min
Sep 18, 3:20 AM CDTFlash Flood WarningEWXBlanco3 hr
Sep 18, 4:03 AM CDTAreal Flood AdvisoryEWXBastrop, Caldwell, Comal, Guadalupe, Hays117 min
Sep 18, 4:51 AM CDTAreal Flood AdvisoryEWXBastrop, Bexar, Caldwell, Comal, Gonzales, Guadalupe2 hr
Sep 18, 4:56 AM CDTRiver Flood WarningEWXTravis18 hr
Sep 18, 5:20 AM CDTFlash Flood WarningEWXBastrop, Burnet, Caldwell, Hays, Travis3 hr
Sep 18, 6:30 AM CDTAreal Flood AdvisoryEWXGonzales, Guadalupe2 hr
Sep 18, 7:06 AM CDTAreal Flood AdvisoryEWXBlanco, Comal, Hays, Kendall114 min
Sep 18, 4:23 PM CDTAreal Flood AdvisoryEWXWilliamson2 hr
Sep 18, 4:45 PM CDTSpecial Weather StatementEWXWilliamson60 min
Sep 18, 4:48 PM CDTFlash Flood WarningEWXBurnet, Williamson3 hr
Sep 18, 5:03 PM CDTSpecial Weather StatementEWXBurnet57 min
Sep 18, 5:39 PM CDTFlash Flood WarningEWXBlanco, Burnet, Llano, Travis, Williamson3 hr
Sep 18, 5:39 PM CDTSpecial Weather StatementEWXBlanco66 min
Sep 18, 6:31 PM CDTFlash Flood WarningEWXTravis, Williamson3 hr
Sep 18, 6:48 PM CDTSpecial Weather StatementEWXBlanco, Hays, Travis57 min

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.