Alert archive / Texas / Flash Flood Warnings in 2012
Flash Flood Warning 59, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this flash flood warning at Sep 13, 2012, 10:29 PM CDT for Bexar County, Comal County, Guadalupe 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
- Sep 13, 2012, 10:29 PM CDT (03:29 UTC)
- Expired
- Sep 14, 2012, 1:30 AM CDT
- In force
- 3 hr
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Storm-based polygon
- Flood severity
- None
Counties Bexar County, TX, Comal County, TX, Guadalupe County, TX
The radar
The Austin/San Antonio radar (KEWX), 43 km from the middle of the area, began a volume at 03:29 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 |
|---|---|---|---|
| Sep 13, 11:21 PM CDT | FLASH FLOOD | San Antonio, TX | FLASH FLOODING CLOSED FOUR STREETS IN SAN ANTONIO. ORSINGER LN AT SLEEPY HOLLOW. OVERBROOK DR AT DANVILLE. SLEEPY HOLLOW AT SUNBURST. VANCE JACKSON AT ORSINGER LN. |
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, 3.5 hours before the alert went out and 227 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
- 424 J/kg
- Mixed-layer CIN
- -131 J/kg
- Mixed-layer LCL
- 1564 m above ground
- 0-6 km bulk shear
- 12 kt
- 0-1 km storm-relative helicity
- 32 m²/s²
- 0-3 km storm-relative helicity
- -10 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
594
WGUS54 KEWX 140329
FFWEWX
TXC029-091-187-140630-
/O.NEW.KEWX.FF.W.0059.120914T0329Z-120914T0630Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
1029 PM CDT THU SEP 13 2012
THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS ISSUED A
* FLASH FLOOD WARNING FOR...
BEXAR COUNTY...
SOUTHERN COMAL COUNTY...
EXTREME WEST CENTRAL GUADALUPE COUNTY...
* UNTIL 130 AM CDT.
* AT 1028 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS HAVE
DETERMINED THAT RAINFALL ESTIMATES FROM DOPPLER RADAR INDICATE SLOW
MOVING THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE WARNED
AREA. DOPPLER RADAR ESTIMATES ONE TO TWO INCHES OF RAIN HAVE
FALLEN OVER THE AREA AND ONE TO TWO INCHES OF ADDITIONAL RAINFALL
IS LIKELY.
* RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...SAN
ANTONIO...UNIVERSAL CITY...ALAMO HEIGHTS...BULVERDE...CHINA
GROVE...CIBOLO...GARDEN RIDGE...HELOTES...HOLLYWOOD PARK...KIRBY...
LACKLAND AFB...LEON VALLEY...LIVE OAK...OLMOS PARK...SCHERTZ...SEA
WORLD...SELMA...SHAVANO PARK...TERRELL HILLS...THE DOMINION...
TIMBERWOOD PARK AND WINDCREST.
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 2963 9819 2925 9835 2927 9872 2959 9871
2982 9842
$$1 follow-up statement
481
WGUS74 KEWX 140504
FFSEWX
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
1204 AM CDT FRI SEP 14 2012
TXC029-091-187-140630-
/O.CON.KEWX.FF.W.0059.000000T0000Z-120914T0630Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
GUADALUPE TX-BEXAR TX-COMAL TX-
1204 AM CDT FRI SEP 14 2012
...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 130 AM CDT FOR
SOUTHERN COMAL...BEXAR AND EXTREME WEST CENTRAL GUADALUPE COUNTIES...
AT MIDNIGHT CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS CONTINUED
TO DETECT A THUNDERSTORM PRODUCING VERY HEAVY RAIN OVER THE WARNED
AREA.
LOCATIONS IN THE WARNING AREA INCLUDE WINDCREST...UNIVERSAL CITY...
TIMBERWOOD PARK...THE DOMINION...SHAVANO PARK...SCHERTZ...LIVE OAK...
HOLLYWOOD PARK...HELOTES...SELMA...CIBOLO...GARDEN RIDGE AND
BULVERDE.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
RUNOFF FROM HEAVY RAIN WILL FLOOD CREEKS, STREAMS, STREET
INTERSECTIONS, CULVERTS AND UNDERPASSES. LOW LYING PLACES THAT
NORMALLY FLOOD COULD BECOME DEATH TRAPS. DO NOT CROSS ANY FLOODED
AREA. TURN AROUND DON'T DROWN.
&&
LAT...LON 2963 9819 2925 9835 2927 9872 2959 9871
2982 9842
$$The office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 13, 7:05 PM CDT | Areal Flood Advisory | EWX | Blanco, Gillespie, Llano | 3 hr |
| Sep 13, 7:28 PM CDT | Areal Flood Advisory | EWX | Bandera, Medina, Uvalde | 3 hr |
| Sep 13, 8:04 PM CDT | Areal Flood Advisory | EWX | Dimmit, Maverick, Zavala | 116 min |
| Sep 13, 9:22 PM CDT | Tornado Warning | EWX | Frio | 23 min |
| Sep 13, 9:53 PM CDT | Areal Flood Advisory | EWX | Bexar, Comal, Kendall | 2 hr |
| Sep 13, 10:01 PM CDT | Areal Flood Advisory | EWX | Frio, Medina | 119 min |
| Sep 13, 10:21 PM CDT | Special Weather Statement | EWX | Frio | 39 min |
| Sep 13, 10:44 PM CDT | Flash Flood Warning | EWX | Blanco, Gillespie, Kendall | 3 hr |
| Sep 14, 12:52 AM CDT | Areal Flood Advisory | EWX | Maverick | 2 hr |
| Sep 14, 1:40 AM CDT | Areal Flood Advisory | EWX | Bexar, Guadalupe, Wilson | 110 min |
| Sep 14, 2:37 AM CDT | Areal Flood Advisory | EWX | Bexar, Comal, Gonzales, Guadalupe | 113 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.