Alert archive / Texas / Flash Flood Warnings in 2021
Flash Flood Warning 13, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this flash flood warning at May 15, 2021, 12:55 PM CDT for Uvalde County, Texas. It was in force for 4 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
- May 15, 2021, 12:55 PM CDT (17:55 UTC)
- Expired
- May 15, 2021, 5:22 PM CDT
- In force
- 4 hr
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Storm-based polygon
- Damage threat
- Considerable
- Flood severity
- None
County Uvalde County, TX
The radar
The Laughlin AFB radar (KDFX), 55 km from the middle of the area, began a volume at 17:56 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 |
|---|---|---|---|
| May 15, 2:53 PM CDT | FLASH FLOOD | 2 Nne Uvalde, TX | LAW ENFORCEMENT REPORTED CITY STREETS CLOSURES DUE TO FLASH FLOODING INCLUDING FM 3447 AND 2369. |
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 12:00Z, 5.9 hours before the alert went out and 110 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
- 660 J/kg
- Mixed-layer CIN
- -30 J/kg
- Mixed-layer LCL
- 602 m above ground
- 0-6 km bulk shear
- 29 kt
- 0-1 km storm-relative helicity
- 34 m²/s²
- 0-3 km storm-relative helicity
- 178 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
976
WGUS54 KEWX 151755
FFWEWX
TXC463-152100-
/O.NEW.KEWX.FF.W.0013.210515T1755Z-210515T2100Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Austin/San Antonio TX
1255 PM CDT Sat May 15 2021
The National Weather Service in Austin/San Antonio has issued a
* Flash Flood Warning for...
South Central Uvalde County in south central Texas...
* Until 400 PM CDT.
* At 1255 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 up to 1 inch 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...
Uvalde and Knippa.
This includes the following streams and drainages...
Cooks Slough, Leona River, Dry Frio River, Frio River, Salt Creek,
Spring Branch, and Taylor Slough.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Be aware of your surroundings and do not drive on flooded roads.
&&
LAT...LON 2933 9968 2929 9963 2918 9962 2918 9970
2921 9979 2925 9981 2930 9978
FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
$$
BF3 follow-up statements
309
WGUS74 KEWX 151946
FFSEWX
Flash Flood Statement
National Weather Service Austin/San Antonio TX
246 PM CDT Sat May 15 2021
TXC463-152100-
/O.CON.KEWX.FF.W.0013.000000T0000Z-210515T2100Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Uvalde TX-
246 PM CDT Sat May 15 2021
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 4 PM CDT THIS
AFTERNOON FOR SOUTH CENTRAL UVALDE COUNTY...
At 246 PM CDT, Doppler radar indicated thunderstorms producing heavy
rain across the warned area. Between 1 and 6 inches of rain have
fallen. A rain gauge on the Frio River has recorded 5.65 inches.
Additional rainfall amounts up to 1 inch are possible in the warned
area. Flash flooding is ongoing or expected to begin shortly.
HAZARD...Life threatening flash flooding. Thunderstorms producing
flash flooding.
SOURCE...Radar.
IMPACT...Life threatening flash flooding of creeks and streams,
urban areas, highways, streets and underpasses.
Some locations that will experience flash flooding include...
Uvalde and Knippa.
This includes the following streams and drainages...
Cooks Slough, Leona River, Dry Frio River, Frio River, Salt Creek,
Spring Branch and Taylor Slough.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Be aware of your surroundings and do not drive on flooded roads.
&&
LAT...LON 2933 9968 2929 9963 2918 9962 2918 9970
2921 9979 2925 9981 2930 9978
FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
$$
BF153
WGUS54 KEWX 152044
FFWEWX
TXC463-152230-
/O.EXT.KEWX.FF.W.0013.000000T0000Z-210515T2230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Austin/San Antonio TX
344 PM CDT Sat May 15 2021
The National Weather Service in Austin/San Antonio has extended the
* Flash Flood Warning for...
South Central Uvalde County in south central Texas...
* Until 530 PM CDT.
* At 344 PM CDT, Local law enforcement and TXDOT reported road
closures due to flooding near and east of Uvalde, including along
FM 2369, FM 3447, and FM 1023. Between 2 and 6 inches of rain
have fallen. Flash flooding is ongoing.
HAZARD...Life threatening flash flooding. Thunderstorms
producing flash flooding.
SOURCE...Law enforcement reported.
IMPACT...Life threatening flash flooding of creeks and streams,
urban areas, highways, streets and underpasses.
* Some locations that will experience flash flooding include...
Uvalde and Knippa.
This includes the following streams and drainages...
Cooks Slough, Leona River, Dry Frio River, Frio River, Salt Creek,
Spring Branch and Taylor Slough.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Be aware of your surroundings and do not drive on flooded roads.
&&
LAT...LON 2933 9968 2929 9963 2918 9962 2918 9970
2921 9979 2925 9981 2930 9978
FLASH FLOOD...OBSERVED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
$$
RUNYEN866
WGUS74 KEWX 152222
FFSEWX
Flash Flood Statement
National Weather Service Austin/San Antonio TX
522 PM CDT Sat May 15 2021
TXC463-152232-
/O.CAN.KEWX.FF.W.0013.000000T0000Z-210515T2230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Uvalde TX-
522 PM CDT Sat May 15 2021
...FLASH FLOOD WARNING FOR SOUTH CENTRAL UVALDE COUNTY HAS BEEN
REPLACED WITH A FLOOD ADVISORY...
LAT...LON 2933 9968 2929 9963 2918 9962 2918 9970
2921 9979 2925 9981 2930 9978
$$
RUNYENThe office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 15, 12:20 PM CDT | Areal Flood Advisory | EWX | Uvalde | 3 hr |
| May 15, 1:30 PM CDT | Flash Flood Warning | EWX | Frio, Medina, Uvalde | 4 hr |
| May 15, 3:24 PM CDT | Areal Flood Advisory | EWX | Frio, Zavala | 2 hr |
| May 15, 3:31 PM CDT | Special Weather Statement | EWX | Atascosa | 44 min |
| May 15, 3:51 PM CDT | Areal Flood Advisory | EWX | Atascosa | 3 hr |
| May 15, 4:08 PM CDT | Special Weather Statement | EWX | Atascosa | 52 min |
| May 15, 4:17 PM CDT | Areal Flood Advisory | EWX | Atascosa | 3 hr |
| May 15, 5:26 PM CDT | Areal Flood Advisory | EWX | Uvalde | 94 min |
| May 15, 5:35 PM CDT | Areal Flood Advisory | EWX | Frio, Medina, Uvalde, Zavala | 115 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.