Alert archive / Texas / Flash Flood Warnings in 2021
Flash Flood Warning 29, NWS San Angelo, TX
NWS San Angelo, TX issued this flash flood warning at Aug 17, 2021, 7:33 AM CDT for Irion County, Tom Green County, Texas. It was in force for 3 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
- Aug 17, 2021, 7:33 AM CDT (12:33 UTC)
- Expired
- Aug 17, 2021, 10:30 AM CDT
- In force
- 3 hr
- Issued by
- NWS San Angelo, TX
- Area
- Storm-based polygon
- Damage threat
- Considerable
- Flood severity
- None
Counties Irion County, TX, Tom Green County, TX
The radar
The San Angelo radar (KSJT), 17 km from the middle of the area, began a volume at 12:35 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 |
|---|---|---|---|
| Aug 17, 8:25 AM CDT | FLASH FLOOD | Arden, TX | THE TOM GREEN COUNTY SHERIFFS OFFICE REPORTED FLOODED ROADS IN THE TOWN OF ARDEN. |
| Aug 17, 8:36 AM CDT | FLASH FLOOD | 5 Wnw San Angelo, TX | THE TOM GREEN SHERIFFS OFFICE REPORTED WIDESPREAD FLOODING ALONG FM 2288. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Midland Regional, TX (KMAF), launched 12:00Z, 0.6 hours before the alert went out and 158 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
- 134 J/kg
- Mixed-layer CIN
- -49 J/kg
- Mixed-layer LCL
- 779 m above ground
- 0-6 km bulk shear
- 18 kt
- 0-1 km storm-relative helicity
- 59 m²/s²
- 0-3 km storm-relative helicity
- 91 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted.
082
WGUS54 KSJT 171233
FFWSJT
TXC235-451-171530-
/O.NEW.KSJT.FF.W.0029.210817T1233Z-210817T1530Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service San Angelo TX
733 AM CDT Tue Aug 17 2021
The National Weather Service in San Angelo has issued a
* Flash Flood Warning for...
Northeastern Irion County in west central Texas...
Central Tom Green County in west central Texas...
* Until 1030 AM CDT.
* At 726 AM CDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Radar estimated storm totals of
6 to 9 inches of rain have fallen in rural areas of western Tom
Green County, especially for areas north of Farm to Market Road
863 and west of Farm to Market Road 2288. Flash flooding is
currently ongoing. Additional heavy rainfall will cause flash
flooding of creeks, low water crossings and roads.
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...
Tankersley, Arden, Twin Buttes Reservoir, San Angelo State Park,
Grape Creek and Us-67 Near The Irion-Tom Green County Line.
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 3155 10053 3134 10054 3133 10080 3151 10078
FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
$$
21The office that day
Everything else NWS San Angelo, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 17, 5:34 AM CDT | Areal Flood Advisory | SJT | Irion, Sterling, Tom Green | 2 hr |
| Aug 17, 6:08 AM CDT | Flash Flood Warning | SJT | Irion, Tom Green | 112 min |
| Aug 17, 6:55 AM CDT | Flash Flood Warning | SJT | Tom Green | 110 min |
| Aug 17, 7:10 AM CDT | Flash Flood Warning | SJT | Irion | 3 hr |
| Aug 17, 7:47 AM CDT | Flash Flood Warning | SJT | Irion, Tom Green | 3 hr |
| Aug 17, 8:39 AM CDT | Flash Flood Warning | SJT | Tom Green | 111 min |
| Aug 17, 8:55 AM CDT | Flash Flood Warning | SJT | Tom Green | 3 hr |
| Aug 17, 9:04 AM CDT | Areal Flood Advisory | SJT | Schleicher | 3 hr |
| Aug 17, 9:36 AM CDT | Flash Flood Warning | SJT | Schleicher | 3 hr |
| Aug 17, 9:54 AM CDT | River Flood Warning | SJT | Irion, Tom Green | 22 hr |
| Aug 17, 10:31 AM CDT | Areal Flood Warning | SJT | Irion, Tom Green | 3 hr |
| Aug 17, 10:36 AM CDT | Areal Flood Advisory | SJT | Concho, Menard | 3 hr |
| Aug 17, 11:10 AM CDT | Areal Flood Advisory | SJT | McCulloch | 3 hr |
| Aug 17, 12:19 PM CDT | Flash Flood Warning | SJT | Schleicher | 3 hr |
| Aug 17, 12:34 PM CDT | Flash Flood Watch | SJT | Coke, Concho, Crockett, Irion, Menard, Runnels and 4 more | 16 hr |
| Aug 17, 12:49 PM CDT | Flash Flood Warning | SJT | Schleicher, Sutton | 3 hr |
| Aug 17, 1:50 PM CDT | Special Weather Statement | SJT | Kimble | 40 min |
| Aug 17, 2:26 PM CDT | Flash Flood Warning | SJT | Kimble, Sutton | 2 hr |
| Aug 17, 3:10 PM CDT | Areal Flood Warning | SJT | Irion, Tom Green | 6 hr |
| Aug 17, 4:24 PM CDT | Flash Flood Warning | SJT | Kimble | 111 min |
| Aug 17, 6:33 PM CDT | River Flood Warning | SJT | Tom Green | 10 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.