Alert archive / Texas / Flash Flood Warnings in 2012
Flash Flood Warning 50, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this flash flood warning at Jul 15, 2012, 6:31 PM CDT for Travis County, Texas. It was in force for 3 hr. 5 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
- Jul 15, 2012, 6:31 PM CDT (23:31 UTC)
- Expired
- Jul 15, 2012, 9:30 PM CDT
- In force
- 3 hr
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Storm-based polygon
- Flood severity
- None
County Travis County, TX
The radar
The Ft Hood radar (KGRK), 52 km from the middle of the area, began a volume at 23:34 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
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 15, 6:55 PM CDT | FLASH FLOOD | Austin, TX | MEDIA REPORTS HEAVY FLOODING IN THE 13000 BLOCK OF HWY 183 NORTH NEAR MCNEIL DRIVE |
| Jul 15, 7:45 PM CDT | HEAVY RAIN 3 | 3 Sse Wells Branch, TX | RAINFALL AMOUNT IN ONE HOUR |
| Jul 15, 8:08 PM CDT | FLASH FLOOD | Austin, TX | FLASH FLOODING AND HIGH WATER RESCUES AT SEVERAL LOCATIONS IN AUSTIN |
| Jul 15, 8:30 PM CDT | HEAVY RAIN 3.01 | 10 Nnw Austin, TX | RAINFALL SINCE 5 PM TODAY AT AGHT2 AUSTIN GREAT HILLS |
| Jul 15, 8:30 PM CDT | HEAVY RAIN 3.01 | 3 Ssw Jollyville, TX | RAINFALL SINCE 5 PM TODAY AT AGHT2 AUSTIN GREAT HILLS |
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 12:00Z, 11.5 hours before the alert went out and 272 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.
- Mixed-layer CAPE
- 1985 J/kg
- Mixed-layer CIN
- -64 J/kg
- Mixed-layer LCL
- 823 m above ground
- 0-6 km bulk shear
- 9 kt
- 0-1 km storm-relative helicity
- 19 m²/s²
- 0-3 km storm-relative helicity
- 101 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
505
WGUS54 KEWX 152331
FFWEWX
TXC453-160230-
/O.NEW.KEWX.FF.W.0050.120715T2331Z-120716T0230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
631 PM CDT SUN JUL 15 2012
THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS ISSUED A
* FLASH FLOOD WARNING FOR...
CENTRAL TRAVIS COUNTY...
* UNTIL 930 PM CDT.
* AT 630 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
SLOW MOVING THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS CENTRAL
TRAVIS COUNTY. RAINFALL RATES WERE ESTIMATED AT 1 TO 3 INCHES AN
HOUR.
* RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
AUSTIN...TANGLEWOOD FOREST...WINDEMERE...BEE CAVE...MANSFIELD
DAM...ROLLINGWOOD AND WEST LAKE HILLS.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
RUNOFF FROM HEAVY RAIN WILL FLOOD CREEKS, STREAMS, STREET
INTERSECTIONS, CULVERTS AND UNDERPASSES. LOW LYING PLACES THAT
NORMALLY FLOOD COULD BECOME DEATH TRAPS. DO NOT CROSS ANY FLOODED
AREA. TURN AROUND DON'T DROWN.
&&
LAT...LON 3051 9785 3047 9785 3043 9778 3045 9775
3046 9770 3048 9768 3048 9762 3012 9784
3026 9804 3052 9788
$$4 follow-up statements
914
WGUS74 KEWX 160006
FFSEWX
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
706 PM CDT SUN JUL 15 2012
TXC453-160230-
/O.CON.KEWX.FF.W.0050.000000T0000Z-120716T0230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
TRAVIS TX-
706 PM CDT SUN JUL 15 2012
...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 930 PM CDT FOR
CENTRAL TRAVIS COUNTY...
AT 658 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS CONTINUED TO
DETECT SLOW MOVING THUNDERSTORM PRODUCING VERY HEAVY RAIN OVER
CENTRAL TRAVIS COUNTY.
LOCATIONS THAT WILL EXPERIENCE FLOODING
INCLUDE...AUSTIN...TANGLEWOOD FOREST...WINDEMERE...BEE
CAVE...MANSFIELD DAM...ROLLINGWOOD AND WEST LAKE HILLS..
BULL CREEK AND SHOAL CREEK ARE ON THE RISE.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
RUNOFF FROM HEAVY RAIN WILL FLOOD CREEKS, STREAMS, STREET
INTERSECTIONS, CULVERTS AND UNDERPASSES. LOW LYING PLACES THAT
NORMALLY FLOOD COULD BECOME DEATH TRAPS. DO NOT CROSS ANY FLOODED
AREA. TURN AROUND DON'T DROWN.
&&
LAT...LON 3051 9785 3047 9785 3043 9778 3045 9775
3046 9770 3048 9768 3048 9762 3012 9784
3026 9804 3052 9788
$$378
WGUS74 KEWX 160049
FFSEWX
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
749 PM CDT SUN JUL 15 2012
TXC453-160230-
/O.CON.KEWX.FF.W.0050.000000T0000Z-120716T0230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
TRAVIS TX-
749 PM CDT SUN JUL 15 2012
...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 930 PM CDT FOR
CENTRAL TRAVIS COUNTY...
AT 742 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS CONTINUED TO
DETECT THUNDERSTORM PRODUCING MODERATE TO HEAVY RAIN OVER CENTRAL
TRAVIS COUNTY. THUNDERSTORMS LOCATED OVER HAYS COUNTY WILL MOVE
NORTHWARD INTO THE WARNING AREA OVER THE NEXT HOUR.
LOCATIONS IN THE WARNING AREA INCLUDE...AUSTIN...TANGLEWOOD
FOREST...WINDEMERE...BEE CAVE...MANSFIELD DAM...ROLLINGWOOD AND WEST
LAKE HILLS.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
RUNOFF FROM HEAVY RAIN WILL FLOOD CREEKS, STREAMS, STREET
INTERSECTIONS, CULVERTS AND UNDERPASSES. LOW LYING PLACES THAT
NORMALLY FLOOD COULD BECOME DEATH TRAPS. DO NOT CROSS ANY FLOODED
AREA. TURN AROUND DON'T DROWN.
&&
LAT...LON 3051 9785 3047 9785 3043 9778 3045 9775
3046 9770 3048 9768 3048 9762 3012 9784
3026 9804 3052 9788
$$331
WGUS74 KEWX 160210
FFSEWX
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
910 PM CDT SUN JUL 15 2012
TXC453-160230-
/O.CON.KEWX.FF.W.0050.000000T0000Z-120716T0230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
TRAVIS TX-
910 PM CDT SUN JUL 15 2012
...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 930 PM CDT FOR
CENTRAL TRAVIS COUNTY...
AT 905 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS CONTINUED TO
DETECT SHOWERS PRODUCING LIGHT TO MODERATE RAINFALL ACROSS CENTRAL
TRAVIS COUNTY. RUNOFF FROM THE HEAVY RAINFALL THAT OCCURRED EARLIER
WILL RESULT IN CREEKS AND STREAMS RUNNING AT OR ABOVE BANKFULL.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
THE FLASH FLOOD WARNING INCLUDES THE FOLLOWING STREAMS AND
DRAINAGES...COLORADO RIVER...WEST BULL CREEK...GILLELAND
CREEK...BULL CREEK...ROCKY CREEK...BARTON CREEK...WILLIAMSON
CREEK...SLAUGHTER CREEK...ONION CREEK...BEAR CREEK...SHORT SPRING
BRANCH...BOGGY CREEK...HARRIS BRANCH...GILLEHAND CREEK...WELLS
BRANCH...WALNUT CREEK...COW FORK...CYPRESS CREEK...SPANISH OAK
CREEK...LAKE CREEK...TANNEHILL BRANCH...WALLER CREEK...EAST BOULDIN
CREEK...SHOAL CREEK...HANCOCK CREEK...LITTLE BARTON CREEK...GRAPE
CREEK...LONG BRANCH...LITTLE BEE CREEK...TURKEY CREEK AND WILBARGER
CREEK.
&&
LAT...LON 3051 9785 3047 9785 3043 9778 3045 9775
3046 9770 3048 9768 3048 9762 3012 9784
3026 9804 3052 9788
$$566
WGUS74 KEWX 160232
FFSEWX
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
932 PM CDT SUN JUL 15 2012
TXC453-160239-
/O.EXP.KEWX.FF.W.0050.000000T0000Z-120716T0230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
TRAVIS TX-
932 PM CDT SUN JUL 15 2012
...THE FLASH FLOOD WARNING WILL EXPIRE AT 930 PM CDT FOR CENTRAL
TRAVIS COUNTY...
THE FLASH FLOOD WARNING WILL BE ALLOWED TO EXPIRE. THERE ARE STILL
SOME ROAD CLOSURES AND CREEKS AND STREAM ARE STILL RUNNING FULL.
LIGHT TO MODERATE SHOWERS ARE STILL POSSIBLE FOR THE NEXT COUPLE
OF HOURS BUT EXPECTED ADDITIONAL RAINFALL AMOUNTS WILL NOT CAUSE
ADDITIONAL FLOODING THIS EVENING.
LAT...LON 3051 9785 3047 9785 3043 9778 3045 9775
3046 9770 3048 9768 3048 9762 3012 9784
3026 9804 3052 9788
$$The office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 15, 12:25 AM CDT | Areal Flood Advisory | EWX | Travis, Williamson | 2 hr |
| Jul 15, 12:40 AM CDT | Flash Flood Warning | EWX | Travis, Williamson | 3 hr |
| Jul 15, 4:59 PM CDT | Areal Flood Advisory | EWX | Williamson | 2 hr |
| Jul 15, 5:18 PM CDT | Flash Flood Warning | EWX | Williamson | 2 hr |
| Jul 15, 6:03 PM CDT | Areal Flood Advisory | EWX | Travis | 117 min |
| Jul 15, 6:40 PM CDT | Areal Flood Advisory | EWX | Bandera, Medina | 110 min |
Nearby
Flash Flood Warnings in Texas, 2012Every flash flood warning 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.