Alert archive / Texas / Flash Flood Warnings in 2012
Flash Flood Warning 52, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this flash flood warning at Jul 15, 2012, 8:21 PM CDT for Travis County, Texas. It was in force for 2 hr. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Jul 15, 2012, 8:21 PM CDT (01:21 UTC)
- Expired
- Jul 15, 2012, 10:25 PM CDT
- In force
- 2 hr
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Storm-based polygon
- Flood severity
- None
County Travis County, TX
The radar
The Austin/San Antonio radar (KEWX), 57 km from the middle of the area, began a volume at 01:21 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
Corpus Christi, TX (KCRP), launched 00:00Z, 1.4 hours before the alert went out and 268 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
- 2088 J/kg
- Mixed-layer CIN
- -30 J/kg
- Mixed-layer LCL
- 970 m above ground
- 0-6 km bulk shear
- 12 kt
- 0-1 km storm-relative helicity
- 5 m²/s²
- 0-3 km storm-relative helicity
- 31 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
447
WGUS54 KEWX 160121
FFWEWX
TXC453-160430-
/O.NEW.KEWX.FF.W.0052.120716T0121Z-120716T0430Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
821 PM CDT SUN JUL 15 2012
THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS ISSUED A
* FLASH FLOOD WARNING FOR...
SOUTH CENTRAL TRAVIS COUNTY...
* UNTIL 1130 PM CDT.
* AT 819 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS HAVE
DETERMINED THAT RAINFALL ESTIMATES FROM DOPPLER RADAR INDICATE
FLASH FLOODING IS LIKELY OCCURRING ACROSS SOUTH CENTRAL TRAVIS
COUNTY. DOPPLER RADAR ESTIMATES RAINFALL RATES OF 2 TO 4 INCHES
AN HOUR. THIS CLUSTER OF THUNDERSTORMS WAS NEARLY STATIONARY.
* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...MUSTANG
RIDGE AND ONION CREEK.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
WHEN WATER COVERS THE ROAD...TURN AROUND DON'T DROWN. THE LIFE YOU
SAVE MAY BE YOUR OWN.
&&
LAT...LON 3016 9755 3002 9771 3004 9774 3012 9784
3024 9776
$$2 follow-up statements
038
WGUS74 KEWX 160205
FFSEWX
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
905 PM CDT SUN JUL 15 2012
TXC453-160430-
/O.CON.KEWX.FF.W.0052.000000T0000Z-120716T0430Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
TRAVIS TX-
905 PM CDT SUN JUL 15 2012
...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1130 PM CDT FOR
SOUTH CENTRAL TRAVIS COUNTY...
AT 900 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS CONTINUED TO
DETECT A THUNDERSTORM PRODUCING VERY HEAVY RAIN OVER SOUTH CENTRAL
TRAVIS COUNTY. MOVEMENT WAS EAST AT 10 TO 15 MPH. RAINFALL RATES WERE
ESTIMATED AT 1 TO 2 INCHES AN HOUR.
LOCATIONS IN THE WARNING AREA INCLUDE AUSTIN BERGSTROM INTERNATIONAL
AIRPORT AND ONION CREEK.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
RUNOFF FROM HEAVY RAIN WILL FLOOD CREEKS, STREAMS, STREET
INTERSECTIONS, CULVERTS AND UNDERPASSES. LOW LYING PLACES THAT
NORMALLY FLOOD COULD BECOME DEATH TRAPS. DO NOT CROSS ANY FLOODED
AREA. TURN AROUND DON'T DROWN.
&&
LAT...LON 3016 9755 3002 9771 3004 9774 3012 9784
3024 9776
$$559
WGUS74 KEWX 160325
FFSEWX
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
1025 PM CDT SUN JUL 15 2012
TXC453-160333-
/O.CAN.KEWX.FF.W.0052.000000T0000Z-120716T0430Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
TRAVIS TX-
1025 PM CDT SUN JUL 15 2012
...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR SOUTH CENTRAL
TRAVIS COUNTY...
THE THREAT FOR ADDITIONAL HEAVY RAINFALL HAS ENDED FOR TONIGHT.
THERE ALSO HAVE BEEN NO REPORTS OF FLASH FLOODING.
LAT...LON 3016 9755 3002 9771 3004 9774 3012 9784
3024 9776
$$The office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 15, 7:29 PM CDT | Flash Flood Warning | EWX | Williamson | 2 hr |
| Jul 15, 7:39 PM CDT | Areal Flood Advisory | EWX | Hays | 111 min |
| Jul 15, 7:56 PM CDT | Areal Flood Advisory | EWX | Bastrop, Travis | 2 hr |
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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.