Alert archive / Texas / Flash Flood Warnings in 2013
Flash Flood Warning 4, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this flash flood warning at Apr 29, 2013, 10:43 PM CDT for Bexar County, Medina 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
- Apr 29, 2013, 10:43 PM CDT (03:43 UTC)
- Expired
- Apr 30, 2013, 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, Medina County, TX
The radar
The Austin/San Antonio radar (KEWX), 84 km from the middle of the area, began a volume at 03:44 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 |
|---|---|---|---|
| Apr 29, 11:10 PM CDT | FLASH FLOOD | 4 Nnw Sea World, TX | FM 1506 BETWEEN CULEBRA AND BANDERA CLOSED DUE TO FLASH FLOODING. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Del Rio, TX (KDRT), launched 00:00Z, 3.7 hours before the alert went out and 199 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
- 394 J/kg
- Mixed-layer CIN
- -45 J/kg
- Mixed-layer LCL
- 2445 m above ground
- 0-6 km bulk shear
- 25 kt
- 0-1 km storm-relative helicity
- 4 m²/s²
- 0-3 km storm-relative helicity
- 74 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted, in the capitals the NWS used until 2016.
827
WGUS54 KEWX 300343
FFWEWX
TXC029-325-300630-
/O.NEW.KEWX.FF.W.0004.130430T0343Z-130430T0630Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
1043 PM CDT MON APR 29 2013
THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS ISSUED A
* FLASH FLOOD WARNING FOR...
WESTERN BEXAR COUNTY...
NORTHEASTERN MEDINA COUNTY...
* UNTIL 130 AM CDT.
* AT 1042 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS HAVE
DETERMINED THAT THUNDERSTORMS ARE PRODUCING HEAVY RAINFALL ACROSS
AREAS WHICH RECEIVED TWO TO THREE INCHES OF RAIN EARLIER THIS
EVENING. THIS ADDITIONAL HEAVY RAIN WILL BE QUICK TO RUNOFF
AND CAUSE FLASH FLOODING.
* RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
CASTROVILLE...BADER...CLIFF...CROSS MOUNTAIN...DUNLAY...HELOTES...
LACKLAND AFB...LACOSTE...LEON VALLEY...MICO...NEW FOUNTAIN...
NOONAN...PEARSON...QUIHI...RIO MEDINA...SEA WORLD...SHAVANO PARK
AND SOMERSET.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
IT IS HARD TO RECOGNIZE THE DANGERS OF FLOODING AT NIGHT. IF FLOOD
WATERS RISE ACT QUICKLY. DO NOT STAY IN FLOOD PRONE AREAS.
&&
LAT...LON 2921 9872 2925 9879 2922 9881 2924 9908
2945 9910 2968 9877 2963 9855 2920 9857
$$2 follow-up statements
638
WGUS74 KEWX 300548
FFSEWX
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
1248 AM CDT TUE APR 30 2013
TXC029-325-300630-
/O.CON.KEWX.FF.W.0004.000000T0000Z-130430T0630Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MEDINA TX-BEXAR TX-
1248 AM CDT TUE APR 30 2013
...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 130 AM CDT FOR
WESTERN BEXAR AND NORTHEASTERN MEDINA COUNTIES...
AT 1242 AM CDT...NATIONAL WEATHER SERVICE RADAR SHOWED DECREASING
LIGHT TO MODERATE RAINS IN THE HELOTES...LEON VALLEY...SEA WORLD
AREA TO LACOSTE AND MACDONA AREAS. THE LEON CREEK WILL
RISE...POSSIBLY TO BANKFULL FROM DOWNSTREAM OF LEON VALLEY TO
LACKLAND AFB TO MERGING WITH THE MEDINA RIVER.
LOCATIONS IN THE WARNING AREA INCLUDE BADER...QUIHI...NEW FOUNTAIN...
CLIFF...RIO MEDINA...MICO...SHAVANO PARK...SEA WORLD...LEON VALLEY...
LACKLAND AFB...HELOTES AND CROSS MOUNTAIN.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
RUNOFF FROM HEAVY RAIN WILL FLOOD CREEKS, STREAMS, STREET
INTERSECTIONS, CULVERTS AND UNDERPASSES. LOW LYING PLACES THAT
NORMALLY FLOOD COULD BECOME DEATH TRAPS. DO NOT CROSS ANY FLOODED
AREA. TURN AROUND DON'T DROWN.
IT IS HARD TO RECOGNIZE THE DANGERS OF FLOODING AT NIGHT. IF FLOOD
WATERS RISE ACT QUICKLY. DO NOT STAY IN FLOOD PRONE AREAS.
&&
LAT...LON 2921 9872 2925 9879 2922 9881 2924 9908
2945 9910 2968 9877 2963 9855 2920 9857
$$228
WGUS74 KEWX 300633
FFSEWX
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
133 AM CDT TUE APR 30 2013
TXC029-325-300642-
/O.EXP.KEWX.FF.W.0004.000000T0000Z-130430T0630Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MEDINA TX-BEXAR TX-
133 AM CDT TUE APR 30 2013
...THE FLASH FLOOD WARNING HAS EXPIRED FOR WESTERN BEXAR AND
NORTHEASTERN MEDINA COUNTIES...
THE RAINS HAVE DISSIPATED IN WESTERN BEXAR AND NORTHEASTERN MEDINA
COUNTIES. THE FLASH FLOOD WARNING WAS ALLOWED TO EXPIRE.
HOWEVER...SOME RISES ON LEON CREEK AND ITS TRIBUTARIES CAN BE
EXPECTED FOR THE NEXT FEW HOURS DUE TO EARLIER HEAVY RAINS.
LAT...LON 2921 9872 2925 9879 2922 9881 2924 9908
2945 9910 2968 9877 2963 9855 2920 9857
$$The office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 29, 7:11 PM CDT | Areal Flood Advisory | EWX | Bexar | 109 min |
| Apr 29, 7:25 PM CDT | Special Weather Statement | EWX | Burnet | 35 min |
| Apr 29, 7:28 PM CDT | Special Weather Statement | EWX | Gillespie | 32 min |
| Apr 29, 7:32 PM CDT | Special Weather Statement | EWX | Kendall | 28 min |
| Apr 29, 7:40 PM CDT | Special Weather Statement | EWX | Frio | 35 min |
| Apr 29, 7:44 PM CDT | Special Weather Statement | EWX | Bexar | 46 min |
| Apr 29, 7:45 PM CDT | Special Weather Statement | EWX | Bandera | 45 min |
| Apr 29, 7:58 PM CDT | Special Weather Statement | EWX | Gillespie | 32 min |
| Apr 29, 8:09 PM CDT | Special Weather Statement | EWX | Blanco | 51 min |
| Apr 29, 8:22 PM CDT | Severe Thunderstorm Warning | EWX | Gillespie, Kendall, Kerr | 23 min |
| Apr 29, 8:23 PM CDT | Severe Thunderstorm Warning | EWX | Bexar, Medina | 37 min |
| Apr 29, 8:53 PM CDT | Areal Flood Advisory | EWX | Bexar | 2 hr |
| Apr 29, 8:56 PM CDT | Severe Thunderstorm Warning | EWX | Bexar, Medina | 34 min |
| Apr 29, 10:26 PM CDT | Special Weather Statement | EWX | Medina | 49 min |
Nearby
Flash Flood Warnings in Texas, 2013Every flash flood warning in 2013
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.