Alert archive / Texas / Flash Flood Watches in 2012

Flash Flood Watch 4, NWS Austin/San Antonio, TX

May 7, 201218 counties in Texas

NWS Austin/San Antonio, TX issued this flash flood watch at May 7, 2012, 3:28 AM CDT for 18 counties in Texas. It took effect at May 7, 2012, 6:00 PM CDT. It was in force for 22 hr.

The area

The counties it named.

The facts

Issued
May 7, 2012, 3:28 AM CDT (08:28 UTC)
In effect from
May 7, 2012, 6:00 PM CDT
Expired
May 8, 2012, 4:00 PM CDT
In force
22 hr
Issued by
NWS Austin/San Antonio, TX
Flood severity
None

Counties Bandera County, TX, Bexar County, TX, Blanco County, TX, Burnet County, TX, Comal County, TX, Edwards County, TX, Gillespie County, TX, Hays County, TX, Kendall County, TX, Kerr County, TX, Kinney County, TX, Llano County, TX, Medina County, TX, Real County, TX, Travis County, TX, Uvalde County, TX, Val Verde County, TX, Williamson County, TX

The radar

The Austin/San Antonio radar (KEWX), 101 km from the middle of the area, began a volume at 08:30 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 (KDRT), launched 00:00Z, 8.5 hours before the alert went out and 189 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 2012-05-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1964 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 2012-05-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -28 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
1964 J/kg
Mixed-layer CIN
-158 J/kg
Mixed-layer LCL
2142 m above ground
0-6 km bulk shear
23 kt
0-1 km storm-relative helicity
-28 m²/s²
0-3 km storm-relative helicity
13 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.

926 
WGUS64 KEWX 070828
FFAEWX

URGENT - IMMEDIATE BROADCAST REQUESTED
FLOOD WATCH
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
328 AM CDT MON MAY 7 2012

...A FLASH FLOOD WATCH IS IN EFFECT THIS EVENING THROUGH TUESDAY 
AFTERNOON FOR THE HILL COUNTRY AND THE ADJACENT AREAS OF SOUTH
CENTRAL TEXAS...

.A SLOW MOVING COLD FRONT WILL PUSH SLOWLY SOUTHWARD INTO THE HILL
COUNTRY AND SOUTH CENTRAL TEXAS TONIGHT. THE COLD FRONT WILL
INTERACT WITH MOIST UNSTABLE GULF AIR ACROSS SOUTH TEXAS COMBINED
WITH UPPER AIR DISTURBANCES MOVING NORTHEAST ACROSS THE FRONTAL
BOUNDARY. THIS WILL RESULT IN THE POTENTIAL FOR HEAVY RAINFALL
OVERNIGHT INTO TUESDAY AS SLOW MOVING THUNDERSTORMS TRAIN ALONG
THE COLD FRONT ACROSS THE AREA. 

THE FLASH FLOOD WATCH IS GENERALLY ALONG AND WEST OF INTERSTATE 35
FROM GEORGETOWN TO SAN ANTONIO...AND ALONG AND NORTH OF A LINE
FROM SAN ANTONIO TO DEL RIO.  AVERAGE RAINFALL AMOUNTS ACROSS THE
WATCH AREA TONIGHT AND TUESDAY WILL BE BETWEEN 1 AND 2 INCHES.
SPOTTY ISOLATED RAINFALL TOTALS OF 3 TO 5 INCHES ARE POSSIBLE.

TXC019-029-031-053-091-137-171-209-259-265-271-299-325-385-453-
463-465-491-071600-
/O.NEW.KEWX.FF.A.0004.120507T2300Z-120508T2100Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BANDERA-BEXAR-BLANCO-BURNET-COMAL-EDWARDS-GILLESPIE-HAYS-KENDALL-
KERR-KINNEY-LLANO-MEDINA-REAL-TRAVIS-UVALDE-VAL VERDE-WILLIAMSON-
INCLUDING THE CITIES OF...BANDERA...SAN ANTONIO...BLANCO...
BURNET...NEW BRAUNFELS...ROCKSPRINGS...FREDERICKSBURG...
SAN MARCOS...BOERNE...KERRVILLE...BRACKETTVILLE...LLANO...HONDO...
LEAKEY...AUSTIN...UVALDE...DEL RIO...GEORGETOWN
328 AM CDT MON MAY 7 2012

...FLASH FLOOD WATCH IN EFFECT FROM THIS EVENING THROUGH TUESDAY
AFTERNOON...

THE NATIONAL WEATHER SERVICE IN AUSTIN/SAN ANTONIO HAS ISSUED A

* FLASH FLOOD WATCH FOR THE FOLLOWING COUNTIES IN SOUTH CENTRAL 
  TEXAS...BANDERA...BEXAR...BLANCO...BURNET...COMAL...EDWARDS... 
  GILLESPIE...HAYS...KENDALL...KERR...KINNEY...LLANO...MEDINA... 
  REAL...TRAVIS...UVALDE...VAL VERDE AND WILLIAMSON. 

* FROM THIS EVENING THROUGH TUESDAY AFTERNOON

* AVERAGE STORM TOTAL RAINFALL AMOUNTS OF 1 TO 2 INCHES WITH
  HIGHER TOTALS OF 3 TO 5 INCHES POSSIBLE.

* THESE HEAVY RAINS WILL PRODUCE FLASH FLOODING OF NORMALLY DRY
  CREEK BEDS...POOR DRAINAGE AREAS...LOW WATER CROSSINGS. RAPID
  RISES ON AREA RIVERS AND LARGER STREAMS WILL LIKELY MAKE SOME
  ROADWAYS IMPASSABLE. THE FLASH FLOOD IMPACT WILL BE HIGHEST
  OVERNIGHT TONIGHT INTO TUESDAY MORNING.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FLASH FLOOD WATCH MEANS FLASH FLOODING IS POSSIBLE IN OR NEAR
THE WATCH AREA. IF YOU ARE IN THE WATCH AREA...PLAN NOW FOR WHAT
YOU WILL DO IF FLASH FLOODING DEVELOPS. STAY INFORMED AND BE
READY TO ACT IF YOU SEE FLOODING OR IF A FLASH FLOOD WARNING IS
ISSUED.

&&

$$
4 follow-up statements
162 
WGUS64 KEWX 072034
FFAEWX

FLOOD WATCH
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
334 PM CDT MON MAY 7 2012

...FLASH FLOOD WATCH IS IN EFFECT FROM 6 PM CDT THIS EVENING
THROUGH TUESDAY AFTERNOON FOR THE HILL COUNTRY AND THE ADJACENT
AREAS OF SOUTH CENTRAL TEXAS...

.A COLD FRONT WILL MOVE SLOWLY SOUTHWARD INTO THE HILL COUNTRY
AND SOUTH CENTRAL TEXAS WHILE UPPER LEVEL DISTURBANCES MOVE EAST
OVER SOUTH CENTRAL TEXAS TONIGHT. THESE FEATURES WILL INTERACT
WITH A MOIST UNSTABLE AIRMASS TO GENERATE NUMEROUS TO WIDESPREAD
THUNDERSTORMS. THIS WILL RESULT IN THE POTENTIAL FOR HEAVY
RAINFALL TONIGHT INTO TUESDAY AS SLOW MOVING THUNDERSTORMS TRAIN
ALONG THE COLD FRONT ACROSS THE AREA.

THE FLASH FLOOD WATCH IS GENERALLY ALONG AND WEST OF INTERSTATE
35 FROM GEORGETOWN TO SAN ANTONIO...AND THEN ALONG AND NORTH OF
HIGHWAY 90 FROM SAN ANTONIO TO DEL RIO. AVERAGE RAINFALL AMOUNTS
TONIGHT INTO TUESDAY OF 1 TO 2 INCHES CAN BE EXPECTED. ISOLATED
RAINFALL TOTALS OF 3 TO 5 INCHES ARE POSSIBLE.

TXC019-029-031-053-091-137-171-209-259-265-271-299-325-385-453-
463-465-491-080500-
/O.CON.KEWX.FF.A.0004.120507T2300Z-120508T2100Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BANDERA-BEXAR-BLANCO-BURNET-COMAL-EDWARDS-GILLESPIE-HAYS-KENDALL-
KERR-KINNEY-LLANO-MEDINA-REAL-TRAVIS-UVALDE-VAL VERDE-WILLIAMSON-
INCLUDING THE CITIES OF...BANDERA...SAN ANTONIO...BLANCO...
BURNET...NEW BRAUNFELS...ROCKSPRINGS...FREDERICKSBURG...
SAN MARCOS...BOERNE...KERRVILLE...BRACKETTVILLE...LLANO...HONDO...
LEAKEY...AUSTIN...UVALDE...DEL RIO...GEORGETOWN
334 PM CDT MON MAY 7 2012

...FLASH FLOOD WATCH REMAINS IN EFFECT FROM 6 PM CDT THIS EVENING
THROUGH TUESDAY AFTERNOON...

THE FLASH FLOOD WATCH CONTINUES FOR

* THE FOLLOWING COUNTIES IN SOUTH CENTRAL TEXAS...BANDERA... 
  BEXAR...BLANCO...BURNET...COMAL...EDWARDS...GILLESPIE...HAYS...
   KENDALL...KERR...KINNEY...LLANO...MEDINA...REAL...TRAVIS... 
  UVALDE...VAL VERDE AND WILLIAMSON. 

* FROM 6 PM CDT THIS EVENING THROUGH TUESDAY AFTERNOON

* AVERAGE STORM TOTAL RAINFALL AMOUNTS OF 1 TO 2 INCHES WITH
  ISOLATED TOTALS OF 3 TO 5 INCHES POSSIBLE.

* THESE HEAVY RAINS WILL PRODUCE FLASH FLOODING OF NORMALLY DRY 
  CREEK BEDS...POOR DRAINAGE AREAS...LOW WATER CROSSINGS. RAPID 
  RISES ON AREA RIVERS AND LARGER STREAMS WILL LIKELY MAKE SOME 
  ROADWAYS IMPASSABLE. THE FLASH FLOOD IMPACT WILL BE HIGHEST 
  OVERNIGHT TONIGHT INTO TUESDAY MORNING. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FLASH FLOOD WATCH MEANS FLASH FLOODING IS POSSIBLE IN OR NEAR
THE WATCH AREA. IF YOU ARE IN THE WATCH AREA...PLAN NOW FOR WHAT
YOU WILL DO IF FLASH FLOODING DEVELOPS. STAY INFORMED AND BE
READY TO ACT IF YOU SEE FLOODING OR IF A FLASH FLOOD WARNING IS
ISSUED.

&&

$$
871 
WGUS64 KEWX 080406 AAA
FFAEWX

FLOOD WATCH...UPDATED
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
1106 PM CDT MON MAY 7 2012

...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH TUESDAY AFTERNOON
FOR THE HILL COUNTRY AND THE ADJACENT AREAS OF SOUTH CENTRAL
TEXAS...

.A COLD FRONT WILL MOVE SLOWLY SOUTHWARD INTO THE HILL COUNTRY
AND ADJACENT AREAS OF SOUTH CENTRAL TEXAS WHILE UPPER LEVEL
DISTURBANCES MOVE NORTHEAST OVER THE REGION OVERNIGHT. THESE
FEATURES WILL INTERACT WITH A MOIST AND UNSTABLE AIRMASS TO
GENERATE SCATTERED TO NUMEROUS THUNDERSTORMS. THIS WILL RESULT
IN THE POTENTIAL FOR HEAVY RAINFALL TONIGHT INTO TUESDAY AS SLOW
MOVING THUNDERSTORMS TRAIN ALONG THE COLD FRONT ACROSS THE AREA.

THE FLASH FLOOD WATCH IS GENERALLY ALONG AND WEST OF INTERSTATE
35 FROM GEORGETOWN TO SAN ANTONIO...AND THEN ALONG AND NORTH OF
HIGHWAY 90 FROM SAN ANTONIO TO DEL RIO. AVERAGE RAINFALL AMOUNTS
TONIGHT INTO TUESDAY OF 1 TO 2 INCHES CAN BE EXPECTED. ISOLATED
RAINFALL TOTALS OF 3 TO 5 INCHES ARE POSSIBLE.

TXC019-029-031-053-091-137-171-209-259-265-271-299-325-385-453-
463-465-491-081200-
/O.CON.KEWX.FF.A.0004.000000T0000Z-120508T2100Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BANDERA-BEXAR-BLANCO-BURNET-COMAL-EDWARDS-GILLESPIE-HAYS-KENDALL-
KERR-KINNEY-LLANO-MEDINA-REAL-TRAVIS-UVALDE-VAL VERDE-WILLIAMSON-
INCLUDING THE CITIES OF...BANDERA...SAN ANTONIO...BLANCO...
BURNET...NEW BRAUNFELS...ROCKSPRINGS...FREDERICKSBURG...
SAN MARCOS...BOERNE...KERRVILLE...BRACKETTVILLE...LLANO...HONDO...
LEAKEY...AUSTIN...UVALDE...DEL RIO...GEORGETOWN
1106 PM CDT MON MAY 7 2012

...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH TUESDAY
AFTERNOON...

THE FLASH FLOOD WATCH CONTINUES FOR

* THE FOLLOWING COUNTIES IN SOUTH CENTRAL TEXAS...BANDERA...
  BEXAR...BLANCO...BURNET...COMAL...EDWARDS...GILLESPIE...HAYS... 
  KENDALL...KERR...KINNEY...LLANO...MEDINA...REAL...TRAVIS...
  UVALDE...VAL VERDE AND WILLIAMSON.

* THROUGH TUESDAY AFTERNOON

* AVERAGE STORM TOTAL RAINFALL AMOUNTS OF 1 TO 2 INCHES WITH 
  ISOLATED TOTALS OF 3 TO 5 INCHES POSSIBLE. 

* THESE HEAVY RAINS WILL PRODUCE FLASH FLOODING OF NORMALLY DRY 
  CREEK BEDS...POOR DRAINAGE AREAS...LOW WATER CROSSINGS. RAPID 
  RISES ON AREA RIVERS AND LARGER STREAMS WILL LIKELY MAKE SOME 
  ROADWAYS IMPASSABLE. THE FLASH FLOOD IMPACT WILL BE HIGHEST 
  OVERNIGHT TONIGHT INTO TUESDAY MORNING. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FLASH FLOOD WATCH MEANS FLASH FLOODING IS POSSIBLE IN OR NEAR
THE WATCH AREA. IF YOU ARE IN THE WATCH AREA...PLAN NOW FOR WHAT
YOU WILL DO IF FLASH FLOODING DEVELOPS. STAY INFORMED AND BE
READY TO ACT IF YOU SEE FLOODING OR IF A FLASH FLOOD WARNING IS
ISSUED.

&&

$$
267 
WGUS64 KEWX 080812
FFAEWX

FLOOD WATCH
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
312 AM CDT TUE MAY 8 2012

...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH 4 PM THIS AFTERNOON
FOR THE HILL COUNTRY AND THE ADJACENT AREAS OF SOUTH CENTRAL
TEXAS...

.A COLD FRONT WILL MOVE SLOWLY SOUTHWARD THROUGH SOUTH CENTRAL
TEXAS THIS MORNING WHILE UPPER LEVEL DISTURBANCES MOVE NORTHEAST
OVER THE REGION TODAY. THESE FEATURES WILL INTERACT WITH A MOIST
AIRMASS TO GENERATE SCATTERED TO NUMEROUS SHOWERS AND THUNDERSTORMS
WITH LOCALLY HEAVY RAINFALL. THE POTENTIAL FOR HEAVY RAINFALL
WILL CONTINUE TODAY AS SLOW MOVING THUNDERSTORMS TRAIN ALONG AND
BEHIND THE COLD FRONT.

THE FLASH FLOOD WATCH IS GENERALLY ALONG AND WEST OF INTERSTATE
35 FROM GEORGETOWN TO SAN ANTONIO...AND THEN ALONG AND NORTH OF
HIGHWAY 90 FROM SAN ANTONIO TO DEL RIO. AVERAGE RAINFALL AMOUNTS
THROUGH THIS AFTERNOON WILL BE AROUND ONE HALF TO ONE AND ONE
HALF INCHES...HOWEVER ISOLATED TOTALS OF 2 TO 4 INCHES ARE
POSSIBLE.

TXC019-029-031-053-091-137-171-209-259-265-271-299-325-385-453-
463-465-491-081700-
/O.CON.KEWX.FF.A.0004.000000T0000Z-120508T2100Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BANDERA-BEXAR-BLANCO-BURNET-COMAL-EDWARDS-GILLESPIE-HAYS-KENDALL-
KERR-KINNEY-LLANO-MEDINA-REAL-TRAVIS-UVALDE-VAL VERDE-WILLIAMSON-
INCLUDING THE CITIES OF...BANDERA...SAN ANTONIO...BLANCO...
BURNET...NEW BRAUNFELS...ROCKSPRINGS...FREDERICKSBURG...
SAN MARCOS...BOERNE...KERRVILLE...BRACKETTVILLE...LLANO...HONDO...
LEAKEY...AUSTIN...UVALDE...DEL RIO...GEORGETOWN
312 AM CDT TUE MAY 8 2012

...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH THIS AFTERNOON...

THE FLASH FLOOD WATCH CONTINUES FOR

* THE FOLLOWING COUNTIES IN SOUTH CENTRAL TEXAS...BANDERA...
  BEXAR...BLANCO...BURNET...COMAL...EDWARDS...GILLESPIE...HAYS...
  KENDALL...KERR...KINNEY...LLANO...MEDINA...REAL...TRAVIS...
  UVALDE...VAL VERDE AND WILLIAMSON.

* THROUGH 4 PM THIS AFTERNOON

* AVERAGE STORM TOTAL RAINFALL AMOUNTS BETWEEN ONE HALF INCH TO
  ONE AND ONE HALF INCHES....WITH ISOLATED TOTALS OF 2 TO 4 INCHES
  POSSIBLE.

* THESE HEAVY RAINS WILL PRODUCE FLASH FLOODING OF NORMALLY DRY 
  CREEK BEDS...POOR DRAINAGE AREAS...LOW WATER CROSSINGS. RAPID 
  RISES ON AREA RIVERS AND LARGER STREAMS WILL LIKELY MAKE SOME 
  ROADWAYS IMPASSABLE. THE FLASH FLOOD IMPACT WILL BE HIGHEST 
  OVERNIGHT TONIGHT INTO TUESDAY MORNING. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FLASH FLOOD WATCH MEANS FLASH FLOODING IS POSSIBLE IN OR NEAR
THE WATCH AREA. IF YOU ARE IN THE WATCH AREA...PLAN NOW FOR WHAT
YOU WILL DO IF FLASH FLOODING DEVELOPS. STAY INFORMED AND BE
READY TO ACT IF YOU SEE FLOODING OR IF A FLASH FLOOD WARNING IS
ISSUED.

&&

$$
776 
WGUS64 KEWX 081639
FFAEWX

FLOOD WATCH
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
1139 AM CDT TUE MAY 8 2012

...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH 4 PM THIS
AFTERNOON FOR THE HILL COUNTRY AND THE ADJACENT AREAS OF SOUTH
CENTRAL TEXAS...

.UPPER LEVEL DISTURBANCES WILL CONTINUE TO MOVE NORTHEAST ACROSS THE
REGION TODAY. THESE FEATURES WILL INTERACT WITH A MOIST AIRMASS TO
GENERATE NUMEROUS SHOWERS AND THUNDERSTORMS WITH LOCALLY HEAVY
RAINFALL. THE POTENTIAL FOR HEAVY RAINFALL WILL CONTINUE THIS
AFTERNOON AS SLOW MOVING THUNDERSTORMS REDEVELOP ACROSS THE AREA.

THE FLASH FLOOD WATCH IS FOR AREAS GENERALLY ALONG AND WEST OF
INTERSTATE 35 FROM GEORGETOWN TO SAN ANTONIO...AND THEN ALONG AND
NORTH OF HIGHWAY 90 FROM SAN ANTONIO TO DEL RIO. AVERAGE RAINFALL
AMOUNTS THROUGH THIS AFTERNOON WILL BE AROUND ONE HALF TO ONE AND
ONE HALF INCHES...HOWEVER ISOLATED TOTALS OF 2 TO 4 INCHES ARE
POSSIBLE.

TXC019-029-031-053-091-137-171-209-259-265-271-299-325-385-453-
463-465-491-082100-
/O.CON.KEWX.FF.A.0004.000000T0000Z-120508T2100Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BANDERA-BEXAR-BLANCO-BURNET-COMAL-EDWARDS-GILLESPIE-HAYS-KENDALL-
KERR-KINNEY-LLANO-MEDINA-REAL-TRAVIS-UVALDE-VAL VERDE-WILLIAMSON-
INCLUDING THE CITIES OF...BANDERA...SAN ANTONIO...BLANCO...
BURNET...NEW BRAUNFELS...ROCKSPRINGS...FREDERICKSBURG...
SAN MARCOS...BOERNE...KERRVILLE...BRACKETTVILLE...LLANO...HONDO...
LEAKEY...AUSTIN...UVALDE...DEL RIO...GEORGETOWN
1139 AM CDT TUE MAY 8 2012

...FLASH FLOOD WATCH REMAINS IN EFFECT UNTIL 4 PM CDT THIS
AFTERNOON...

THE FLASH FLOOD WATCH CONTINUES FOR

* THE FOLLOWING COUNTIES IN SOUTH CENTRAL TEXAS...BANDERA... 
  BEXAR...BLANCO...BURNET...COMAL...EDWARDS...GILLESPIE...HAYS...
   KENDALL...KERR...KINNEY...LLANO...MEDINA...REAL...TRAVIS... 
  UVALDE...VAL VERDE AND WILLIAMSON. 

* UNTIL 4 PM CDT THIS AFTERNOON

* AVERAGE STORM TOTAL RAINFALL AMOUNTS BETWEEN ONE HALF INCH TO 
  ONE AND ONE HALF INCHES....WITH ISOLATED TOTALS OF 2 TO 4 
  INCHES POSSIBLE. 

* THESE HEAVY RAINS WILL PRODUCE FLASH FLOODING OF NORMALLY DRY 
  CREEK BEDS...POOR DRAINAGE AREAS...LOW WATER CROSSINGS. RAPID 
  RISES ON AREA RIVERS AND LARGER STREAMS WILL LIKELY MAKE SOME 
  ROADWAYS IMPASSABLE. THE FLASH FLOOD IMPACT WILL BE HIGHEST 
  OVERNIGHT TONIGHT INTO TUESDAY MORNING. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FLASH FLOOD WATCH MEANS FLASH FLOODING IS POSSIBLE IN OR NEAR
THE WATCH AREA. IF YOU ARE IN THE WATCH AREA...PLAN NOW FOR WHAT
YOU WILL DO IF FLASH FLOODING DEVELOPS. STAY INFORMED AND BE
READY TO ACT IF YOU SEE FLOODING OR IF A FLASH FLOOD WARNING IS
ISSUED.

&&

$$

The office that day

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

IssuedProductOfficeCountiesLasted
May 6, 7:09 PM CDTAreal Flood AdvisoryEWXLlano111 min
May 6, 7:33 PM CDTSevere Thunderstorm WarningEWXLlano42 min
May 7, 4:47 PM CDTSevere Thunderstorm WarningEWXLlano58 min
May 7, 5:10 PM CDTTornado WarningEWXLlano35 min
May 7, 5:23 PM CDTSevere Thunderstorm WarningEWXLlano37 min
May 7, 5:32 PM CDTTornado WarningEWXGillespie, Llano28 min
May 7, 5:43 PM CDTTornado WarningEWXLlano32 min
May 7, 5:57 PM CDTSevere Thunderstorm WarningEWXBlanco, Burnet, Gillespie, Llano63 min
May 7, 6:08 PM CDTAreal Flood AdvisoryEWXLlano112 min
May 7, 6:49 PM CDTSevere Thunderstorm WarningEWXBlanco, Gillespie, Kendall56 min
May 7, 6:51 PM CDTAreal Flood AdvisoryEWXGillespie2 hr

Nearby

Flash Flood Watches in Texas, 2012Every flash flood watch in 2012

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.