Alert archive / Texas / Flash Flood Warnings in 2021
Flash Flood Warning 61, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this flash flood warning at Oct 14, 2021, 1:04 AM CDT for Bexar County, Comal County, Texas. It was in force for 4 hr. 5 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 14, 2021, 1:04 AM CDT (06:04 UTC)
- Expired
- Oct 14, 2021, 5:00 AM CDT
- In force
- 4 hr
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Storm-based polygon
- Flood severity
- None
Counties Bexar County, TX, Comal County, TX
The radar
The Austin/San Antonio radar (KEWX), 44 km from the middle of the area, began a volume at 06:03 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 14, 1:25 AM CDT | HEAVY RAIN 5.54 | 5 Sse Canyon Lake, TX | CORRECTS PREVIOUS HEAVY RAIN REPORT FROM 5 SSE CANYON LAKE. MEASURED IN PAST 6 HOURS AT USGS GAUGES ALONG BEAR CREEK. |
| Oct 14, 1:25 AM CDT | HEAVY RAIN 5.54 | 5 Sse Canyon Lake, TX | MEASURED IN PAST 6 HOURS AT USGS GAUGES ALONG BEER CREEK. |
| Oct 14, 1:49 AM CDT | HEAVY RAIN 5.45 | 6 E Canyon Lake, TX | MEASURED IN PAST 6 HOURS BY GBRA GAUGE. |
| Oct 14, 3:30 AM CDT | FLASH FLOOD | 2 Wnw Timberwood Park, TX | DELAYED REPORT OF TWO PEOPLE RESCUED AFTER SUV WAS SWEPT OFF BLANCO RD NEAR DIETZ-ELKHORN ROAD WEST OF BULVERDE. |
| Oct 14, 4:00 AM CDT | FLASH FLOOD | 3 Nne Leon Valley, TX | A PICKUP TRUCK WAS CARRIED A COUPLE HUNDRED FEET BY RUSHING WATER NEAR THE 10000 BLK OF SOUTHWELL ROAD, CARRIED DOWN TO VERBENA STREET. TIME IS APPROXIMATE. |
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, 6.1 hours before the alert went out and 231 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.
433
WGUS54 KEWX 140604
FFWEWX
TXC029-091-140900-
/O.NEW.KEWX.FF.W.0061.211014T0604Z-211014T0900Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Austin/San Antonio TX
104 AM CDT Thu Oct 14 2021
The National Weather Service in Austin/San Antonio has issued a
* Flash Flood Warning for...
Bexar County in south central Texas...
Central Comal County in south central Texas...
* Until 400 AM CDT.
* At 104 AM CDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Between 2 and 5 inches of rain
have fallen. Additional rainfall amounts up to 1 inch are possible
in the warned area. Flash flooding is ongoing.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar.
IMPACT...Flash flooding of small creeks and streams, urban
areas, highways, streets and underpasses as well as
other poor drainage and low-lying areas.
* Some locations that will experience flash flooding include...
San Antonio, San Antonio Int Airport, Stinson Municipal Airport,
Canyon Lake Dam, Canyon Lake, Leon Valley, Helotes, Fair Oaks
Ranch, Alamo Heights, Terrell Hills, Bulverde, Shavano Park,
Hollywood Park, Cross Mountain, Lytle, Olmos Park, Somerset, The
Dominion, Timberwood Park and Leon Springs.
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.
Be aware of your surroundings and do not drive on flooded roads.
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 3004 9830 2991 9812 2967 9838 2914 9848
2925 9880 2969 9880 2973 9865
FLASH FLOOD...RADAR INDICATED
$$
PLATT2 follow-up statements
172
WGUS54 KEWX 140845
FFWEWX
TXC029-091-141000-
/O.EXT.KEWX.FF.W.0061.000000T0000Z-211014T1000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Austin/San Antonio TX
345 AM CDT Thu Oct 14 2021
The National Weather Service in Austin/San Antonio has extended the
* Flash Flood Warning for...
Bexar County in south central Texas...
Central Comal County in south central Texas...
* Until 500 AM CDT.
* At 345 AM CDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Between 2 and 5 inches of rain
have fallen. Additional rainfall amounts up to 1 inch are possible
in the warned area. Flash flooding is ongoing or expected to begin
shortly.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar.
IMPACT...Flash flooding of small creeks and streams, urban
areas, highways, streets and underpasses as well as
other poor drainage and low-lying areas.
* Some locations that will experience flash flooding include...
San Antonio, San Antonio Int Airport, Stinson Municipal Airport,
Canyon Lake Dam, Canyon Lake, Leon Valley, Helotes, Fair Oaks
Ranch, Alamo Heights, Terrell Hills, Bulverde, Shavano Park,
Hollywood Park, Cross Mountain, Lytle, Olmos Park, Somerset, The
Dominion, Timberwood Park, and Leon Springs.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Be especially cautious at night when it is harder to recognize the
dangers of flooding.
Be aware of your surroundings and do not drive on flooded roads.
In hilly terrain there are hundreds of low water crossings which are
potentially dangerous in heavy rain. Do not attempt to cross flooded
roads. Find an alternate route.
&&
LAT...LON 3004 9830 2991 9812 2967 9838 2914 9848
2925 9880 2969 9880 2973 9865
FLASH FLOOD...RADAR INDICATED
$$
BF985
WGUS74 KEWX 141003
FFSEWX
Flash Flood Statement
National Weather Service Austin/San Antonio TX
503 AM CDT Thu Oct 14 2021
TXC029-091-141013-
/O.EXP.KEWX.FF.W.0061.000000T0000Z-211014T1000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Bexar TX-Comal TX-
503 AM CDT Thu Oct 14 2021
...FLASH FLOOD WARNING HAS EXPIRED FOR BEXAR AND CENTRAL COMAL
COUNTIES...
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 3004 9830 2991 9812 2967 9838 2914 9848
2925 9880 2969 9880 2973 9865
$$
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, 8:55 PM CDT | Flash Flood Warning | EWX | Blanco, Kendall | 6 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, 1:11 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.