Alert archive / Texas / Flash Flood Warnings in 2021
Flash Flood Warning 56, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this flash flood warning at Oct 13, 2021, 2:44 PM CDT for Val Verde County, Texas. It was in force for 3 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
- Oct 13, 2021, 2:44 PM CDT (19:44 UTC)
- Expired
- Oct 13, 2021, 5:45 PM CDT
- In force
- 3 hr
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Storm-based polygon
- Damage threat
- Considerable
- Flood severity
- None
County Val Verde County, TX
The radar
The Laughlin AFB radar (KDFX), 129 km from the middle of the area, began a volume at 19:44 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.
The nearest sounding before it
Del Rio, TX (KDRT), launched 12:00Z, 7.7 hours before the alert went out and 79 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
- 2273 J/kg
- Mixed-layer CIN
- -49 J/kg
- Mixed-layer LCL
- 675 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- 165 m²/s²
- 0-3 km storm-relative helicity
- 184 m²/s²
- Significant tornado parameter
- 2.5
- Supercell composite
- 12.3
The text
As transmitted.
218
WGUS54 KEWX 131944
FFWEWX
TXC465-132245-
/O.NEW.KEWX.FF.W.0056.211013T1944Z-211013T2245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Austin/San Antonio TX
244 PM CDT Wed Oct 13 2021
The National Weather Service in Austin/San Antonio has issued a
* Flash Flood Warning for...
Northwestern Val Verde County in south central Texas...
* Until 545 PM CDT.
* At 244 PM CDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Between 1 and 3 inches of rain
have fallen. Additional rainfall amounts of 1 to 3 inches are
possible in the warned area. Flash flooding is ongoing or expected
to begin shortly.
HAZARD...Life threatening flash flooding. Thunderstorms
producing flash flooding.
SOURCE...Radar.
IMPACT...Life threatening flash flooding of creeks and streams,
urban areas, highways, streets and underpasses.
* Some locations that will experience flash flooding include...
Juno and Shumla.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
In hilly terrain there are hundreds of low water crossings which are
potentially dangerous in heavy rain. Do not attempt to cross flooded
roads. Find an alternate route.
&&
LAT...LON 2983 10159 3001 10155 3029 10135 3027 10102
3013 10104 2971 10140 2973 10140 2975 10142
2976 10140 2977 10140 2975 10145 2979 10146
2979 10148 2977 10149 2980 10154 2981 10154
2981 10155
FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
$$
HAMPSHIRE2 follow-up statements
191
WGUS74 KEWX 132109
FFSEWX
Flash Flood Statement
National Weather Service Austin/San Antonio TX
409 PM CDT Wed Oct 13 2021
TXC465-132245-
/O.CON.KEWX.FF.W.0056.000000T0000Z-211013T2245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Val Verde TX-
409 PM CDT Wed Oct 13 2021
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 545 PM CDT THIS
AFTERNOON FOR NORTHWESTERN VAL VERDE COUNTY...
At 409 PM CDT, Doppler radar indicated only patchy light rains
across the warned area. Earlier heavy rains between 1 and 3 inches
of rain will continue ongoing flash flooding.
HAZARD...Life threatening flash flooding. Thunderstorms producing
flash flooding.
SOURCE...Radar.
IMPACT...Life threatening flash flooding of creeks and streams,
urban areas, highways, streets and underpasses.
Some locations that will experience flash flooding include...
Juno and Shumla.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
In hilly terrain there are hundreds of low water crossings which are
potentially dangerous in heavy rain. Do not attempt to cross flooded
roads. Find an alternate route.
&&
LAT...LON 2983 10159 3001 10155 3029 10135 3027 10102
3013 10104 2971 10140 2973 10140 2975 10142
2976 10140 2977 10140 2975 10145 2979 10146
2979 10148 2977 10149 2980 10154 2981 10154
2981 10155
FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
$$
CP557
WGUS74 KEWX 132241
FFSEWX
Flash Flood Statement
National Weather Service Austin/San Antonio TX
541 PM CDT Wed Oct 13 2021
TXC465-132251-
/O.EXP.KEWX.FF.W.0056.000000T0000Z-211013T2245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Val Verde TX-
541 PM CDT Wed Oct 13 2021
...FLASH FLOOD WARNING WILL EXPIRE AT 545 PM CDT THIS AFTERNOON FOR
NORTHWESTERN VAL VERDE COUNTY...
Flood waters have receded. The heavy rain has ended. Flooding is no
longer expected to pose a threat. Please continue to heed remaining
road closures.
A Flash Flood Watch remains in effect until 700 PM CDT Thursday for
a portion of south central Texas.
LAT...LON 2983 10159 3001 10155 3029 10135 3027 10102
3013 10104 2971 10140 2973 10140 2975 10142
2976 10140 2977 10140 2975 10145 2979 10146
2979 10148 2977 10149 2980 10154 2981 10154
2981 10155
$$
CPThe office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 13, 3:19 PM CDT | Special Weather Statement | EWX | Kinney | 41 min |
| Oct 13, 4:00 PM CDT | Special Weather Statement | EWX | Uvalde | 45 min |
| Oct 13, 4:33 PM CDT | Special Weather Statement | EWX | Real, Uvalde | 42 min |
| Oct 13, 4:48 PM CDT | Severe Thunderstorm Warning | EWX | Bandera, Kerr, Real, Uvalde | 57 min |
| Oct 13, 5:37 PM CDT | Severe Thunderstorm Warning | EWX | Bandera, Gillespie, Kerr | 53 min |
| Oct 13, 6:45 PM CDT | Special Weather Statement | EWX | Bexar, Blanco, Burnet, Gillespie, Kendall, Llano and 1 more | 45 min |
Nearby
Flash Flood Warnings in Texas, 2021Every flash flood warning in 2021
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.