Alert archive / Texas / Flash Flood Warnings in 2021
Flash Flood Warning 57, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this flash flood warning at Oct 13, 2021, 8:55 PM CDT for Blanco County, Kendall County, Texas. It was in force for 6 hr. 2 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
- Oct 13, 2021, 8:55 PM CDT (01:55 UTC)
- Expired
- Oct 14, 2021, 3:00 AM CDT
- In force
- 6 hr
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Storm-based polygon
- Damage threat
- Considerable
- Flood severity
- None
Counties Blanco County, TX, Kendall County, TX
The radar
The Austin/San Antonio radar (KEWX), 58 km from the middle of the area, began a volume at 01:56 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 |
|---|---|---|---|
| Oct 13, 10:10 PM CDT | HEAVY RAIN 4 | Blanco, TX | MEASURED OVER THE PAST 2 HOURS. |
| Oct 13, 11:31 PM CDT | FLASH FLOOD | 5 Ene Twin Sisters, TX | FM 32 BRIDGE AT THE LITTLE BLANCO RIVER IS FLOODED. |
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, 1.9 hours before the alert went out and 240 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
- 20 J/kg
- Mixed-layer CIN
- -119 J/kg
- Mixed-layer LCL
- 1371 m above ground
- 0-6 km bulk shear
- 29 kt
- 0-1 km storm-relative helicity
- -100 m²/s²
- 0-3 km storm-relative helicity
- 229 m²/s²
- Significant tornado parameter
- -0.0
- Supercell composite
- -0.1
The text
As transmitted.
960
WGUS54 KEWX 140155
FFWEWX
TXC031-259-140500-
/O.NEW.KEWX.FF.W.0057.211014T0155Z-211014T0500Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Austin/San Antonio TX
855 PM CDT Wed Oct 13 2021
The National Weather Service in Austin/San Antonio has issued a
* Flash Flood Warning for...
Southern Blanco County in south central Texas...
Eastern Kendall County in south central Texas...
* Until midnight CDT.
* At 855 PM CDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Up to 3 inches of rain have
fallen. Additional rainfall amounts up to 2 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...
Blanco, Fair Oaks Ranch, Johnson City, Flugrath, Twin Sisters,
Kendalia, Guadalupe River State Park, Payton, Bergheim, Kreutzberg
and Farm to Market Roads 473 and 3351.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Be especially cautious at night when it is harder to recognize the
dangers of flooding.
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 3013 9857 3030 9840 3023 9823 3004 9830
2994 9842 2976 9864 2989 9872
FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
$$
PLATT4 follow-up statements
073
WGUS74 KEWX 140309
FFSEWX
Flash Flood Statement
National Weather Service Austin/San Antonio TX
1009 PM CDT Wed Oct 13 2021
TXC031-259-140500-
/O.CON.KEWX.FF.W.0057.000000T0000Z-211014T0500Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Blanco TX-Kendall TX-
1009 PM CDT Wed Oct 13 2021
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL MIDNIGHT CDT TONIGHT
FOR SOUTHERN BLANCO AND EASTERN KENDALL COUNTIES...
At 1009 PM CDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Between 2 and 5 inches of rain
have fallen, especially across far eastern Kendall and southern
Blanco counties between Bergheim, Kendalia and Blanco. Additional
rainfall amounts up to 2 inches are possible in the warned area.
Flash flooding is ongoing or expected to begin shortly.
HAZARD...Life threatening flash flooding. Thunderstorms producing
flash flooding.
SOURCE...Radar.
IMPACT...Life threatening flash flooding of creeks and streams,
urban areas, highways, streets and underpasses.
Some locations that will experience flash flooding include...
Blanco, Fair Oaks Ranch, Johnson City, Flugrath, Twin Sisters,
Kendalia, Guadalupe River State Park, Payton, Bergheim and
Kreutzberg.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Be especially cautious at night when it is harder to recognize the
dangers of flooding.
In hilly terrain there are hundreds of low water crossings which are
potentially dangerous in heavy rain. Do not attempt to cross flooded
roads. Find an alternate route.
&&
LAT...LON 3013 9857 3030 9840 3023 9823 3004 9830
2994 9842 2976 9864 2989 9872
FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
$$
PLATT040
WGUS54 KEWX 140446
FFWEWX
TXC031-259-140700-
/O.EXT.KEWX.FF.W.0057.000000T0000Z-211014T0700Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Austin/San Antonio TX
1146 PM CDT Wed Oct 13 2021
The National Weather Service in Austin/San Antonio has extended the
* Flash Flood Warning for...
Southern Blanco County in south central Texas...
Eastern Kendall County in south central Texas...
* Until 200 AM CDT.
* At 1146 PM CDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Between 3 and 6 inches of rain
have fallen, especially across far eastern Kendall and southern
Blanco counties. Additional rainfall amounts up to 2 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...
Blanco, Fair Oaks Ranch, Johnson City, Flugrath, Twin Sisters,
Kendalia, Guadalupe River State Park, Payton, Bergheim and
Kreutzberg.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Be especially cautious at night when it is harder to recognize the
dangers of flooding.
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 3013 9857 3030 9840 3023 9823 3004 9830
2994 9842 2976 9864 2989 9872
FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
$$
PLATT796
WGUS54 KEWX 140648
FFWEWX
TXC031-259-140800-
/O.EXT.KEWX.FF.W.0057.000000T0000Z-211014T0800Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Austin/San Antonio TX
148 AM CDT Thu Oct 14 2021
The National Weather Service in Austin/San Antonio has extended the
* Flash Flood Warning for...
Southern Blanco County in south central Texas...
Eastern Kendall County in south central Texas...
* Until 300 AM CDT.
* At 148 AM CDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Between 2 and 6 inches of rain
have fallen, with the heaviest amounts over far eastern Kendall
and far southern Blanco. Additional rainfall amounts up to 1 inch
are possible in the warned area. Flash flooding is ongoing.
HAZARD...Life threatening flash flooding. Thunderstorms
producing flash flooding.
SOURCE...Radar.
IMPACT...Life threatening flash flooding of creeks and streams,
urban areas, highways, streets and underpasses.
* Some locations that will experience flash flooding include...
Blanco, Fair Oaks Ranch, Johnson City, Flugrath, Twin Sisters,
Kendalia, Guadalupe River State Park, Payton, Bergheim and
Kreutzberg.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Be especially cautious at night when it is harder to recognize the
dangers of flooding.
In hilly terrain there are hundreds of low water crossings which are
potentially dangerous in heavy rain. Do not attempt to cross flooded
roads. Find an alternate route.
&&
LAT...LON 3013 9857 3030 9840 3023 9823 3004 9830
2994 9842 2976 9864 2989 9872
FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
$$
PLATT497
WGUS74 KEWX 140759
FFSEWX
Flash Flood Statement
National Weather Service Austin/San Antonio TX
259 AM CDT Thu Oct 14 2021
TXC031-259-140809-
/O.EXP.KEWX.FF.W.0057.000000T0000Z-211014T0800Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Blanco TX-Kendall TX-
259 AM CDT Thu Oct 14 2021
...FLASH FLOOD WARNING WILL EXPIRE AT 3 AM CDT EARLY THIS MORNING
FOR SOUTHERN BLANCO AND EASTERN KENDALL COUNTIES...
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 3013 9857 3030 9840 3023 9823 3004 9830
2994 9842 2976 9864 2989 9872
$$
BFThe office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 13, 7:44 PM CDT | Special Weather Statement | EWX | Kendall | 46 min |
| Oct 13, 7:53 PM CDT | Areal Flood Advisory | EWX | Bandera, Kendall, Kerr | 3 hr |
| Oct 13, 8:05 PM CDT | Tornado Warning | EWX | Blanco, Comal, Kendall | 25 min |
| Oct 13, 8:21 PM CDT | Special Weather Statement | EWX | Williamson | 39 min |
| Oct 13, 8:28 PM CDT | Special Weather Statement | EWX | Comal, Hays | 47 min |
| Oct 13, 8:35 PM CDT | Areal Flood Advisory | EWX | Blanco | 3 hr |
| Oct 13, 9:25 PM CDT | Areal Flood Advisory | EWX | Bexar, Comal, Hays | 3 hr |
| Oct 13, 9:49 PM CDT | Flash Flood Warning | EWX | Bexar, Comal | 3 hr |
| Oct 13, 9:55 PM CDT | Areal Flood Advisory | EWX | Travis | 3 hr |
| Oct 13, 10:24 PM CDT | Areal Flood Advisory | EWX | Williamson | 3 hr |
| Oct 13, 10:38 PM CDT | Areal Flood Advisory | EWX | Hays, Travis | 3 hr |
| Oct 13, 10:52 PM CDT | River Flood Warning | EWX | Blanco, Hays | 3 hr |
| Oct 13, 11:00 PM CDT | Flash Flood Warning | EWX | Hays | 6 hr |
| Oct 13, 11:49 PM CDT | Areal Flood Advisory | EWX | Bastrop, Travis, Williamson | 4 hr |
| Oct 13, 11:59 PM CDT | Areal Flood Advisory | EWX | Bexar, Caldwell, Comal, Guadalupe | 4 hr |
| Oct 14, 12:46 AM CDT | Flash Flood Warning | EWX | Caldwell, Comal, Guadalupe, Hays | 10 hr |
| Oct 14, 12:57 AM CDT | River Flood Warning | EWX | Hays | 4 hr |
| Oct 14, 1:04 AM CDT | Flash Flood Warning | EWX | Bexar, Comal | 4 hr |
| Oct 14, 1:11 AM CDT | Areal Flood Advisory | EWX | Caldwell, Gonzales, Guadalupe, Wilson | 3 hr |
| Oct 14, 1:50 AM CDT | River Flood Warning | EWX | Comal, Guadalupe | 7 hr |
| Oct 14, 2:04 AM CDT | Special Weather Statement | EWX | Gonzales | 41 min |
| Oct 14, 2:39 AM CDT | Special Weather Statement | EWX | Gonzales | 51 min |
| Oct 14, 2:48 AM CDT | Tornado Warning | EWX | Gonzales, Lavaca | 27 min |
| Oct 14, 3:11 AM CDT | River Flood Warning | EWX | Comal, Guadalupe | 4 hr |
| Oct 14, 3:17 AM CDT | Areal Flood Advisory | EWX | Bastrop, Fayette, Lee | 3 hr |
| Oct 14, 3:19 AM CDT | Tornado Warning | EWX | Gonzales, Lavaca | 26 min |
| Oct 14, 3:39 AM CDT | Tornado Warning | EWX | Fayette, Gonzales, Lavaca | 36 min |
| Oct 14, 3:42 AM CDT | Flash Flood Warning | EWX | Caldwell, Gonzales, Guadalupe, Karnes, Lavaca, Wilson | 7 hr |
| Oct 14, 4:13 AM CDT | River Flood Warning | EWX | Comal, Gonzales, Guadalupe | 3 hr |
| Oct 14, 4:24 AM CDT | Severe Thunderstorm Warning | EWX | Fayette, Gonzales, Lavaca | 66 min |
| Oct 14, 5:07 AM CDT | Flash Flood Warning | EWX | Fayette | 5 hr |
| Oct 14, 5:10 AM CDT | Severe Thunderstorm Warning | EWX | Lavaca | 21 min |
| Oct 14, 5:36 AM CDT | River Flood Warning | EWX | Caldwell, Hays | 8 hr |
| Oct 14, 5:36 AM CDT | River Flood Warning | EWX | Caldwell, Gonzales | 38 hr |
| Oct 14, 6:27 AM CDT | Flash Flood Warning | EWX | DeWitt, Karnes, Lavaca | 6 hr |
| Oct 14, 7:15 AM CDT | River Flood Warning | EWX | Travis | 6 hr |
| Oct 14, 7:19 AM CDT | River Flood Warning | EWX | Gonzales | 3 days |
| Oct 14, 7:52 AM CDT | River Flood Warning | EWX | Guadalupe | 3 hr |
| Oct 14, 8:23 AM CDT | River Flood Warning | EWX | Bexar | 7 hr |
| Oct 14, 8:28 AM CDT | River Flood Warning | EWX | Bexar | 21 hr |
| Oct 14, 8:28 AM CDT | River Flood Warning | EWX | Bexar, Wilson | 29 hr |
| Oct 14, 8:29 AM CDT | River Flood Warning | EWX | Bexar | 12 hr |
| Oct 14, 9:10 AM CDT | River Flood Warning | EWX | DeWitt | 3 days |
| Oct 14, 9:11 AM CDT | River Flood Warning | EWX | DeWitt | 5 days |
| Oct 14, 10:54 AM CDT | River Flood Warning | EWX | Karnes, Wilson | 33 hr |
| Oct 14, 10:55 AM CDT | River Flood Warning | EWX | Karnes | 45 hr |
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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.