Alert archive / Texas / Flash Flood Warnings in 2021
Flash Flood Warning 37, NWS San Angelo, TX
NWS San Angelo, TX issued this flash flood warning at Aug 17, 2021, 4:24 PM CDT for Kimble County, Texas. It was in force for 111 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Aug 17, 2021, 4:24 PM CDT (21:24 UTC)
- Expired
- Aug 17, 2021, 6:15 PM CDT
- In force
- 111 min
- Issued by
- NWS San Angelo, TX
- Area
- Storm-based polygon
- Flood severity
- None
County Kimble County, TX
The radar
The San Angelo radar (KSJT), 134 km from the middle of the area, began a volume at 21:27 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, 9.4 hours before the alert went out and 160 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
- 1588 J/kg
- Mixed-layer CIN
- -51 J/kg
- Mixed-layer LCL
- 890 m above ground
- 0-6 km bulk shear
- 16 kt
- 0-1 km storm-relative helicity
- 57 m²/s²
- 0-3 km storm-relative helicity
- 102 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.2
The text
As transmitted.
379
WGUS54 KSJT 172124
FFWSJT
TXC267-172315-
/O.NEW.KSJT.FF.W.0037.210817T2124Z-210817T2315Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service San Angelo TX
424 PM CDT Tue Aug 17 2021
The National Weather Service in San Angelo has issued a
* Flash Flood Warning for...
Southern and Southeastern Kimble County in west central Texas...
* Until 615 PM CDT.
* At 419 PM CDT, National Weather Service radar indicated a cluster
of thunderstorms with very heavy rainfall across the warned area.
The cluster of storms was moving slowly to the east. This cluster
of storms has a history of producing rainfall of 2 to 3.5 inches.
This intense rainfall is expected to cause flash flooding.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar indicated.
IMPACT...Flooding of small creeks and streams, urban areas,
highways, streets and underpasses as well as other
drainage and low lying areas.
* Some locations that will experience flooding include...
Junction, Segovia, South Llano River State Park, Us-
83 Near The Kerr-Kimble County Line, I-10 Near The Kimble-
Kerr County Line and The Intersection Of I-10 And Us 290.
This includes the following streams and drainages...
Sycamore Creek, Little Devils River, Allen Creek, Salt Creek, White
Oak Creek, Dry Cedar Creek, Chalk Creek, Llano River, Bogs, The,
James River, North Llano River, Paint Creek, Johnson Fork, Burnt
Branch, South Llano River, Cedar Creek, Falls Prong, Tobe Branch, Joy
Creek, Middle Sycamore Creek, East Sycamore Creek and Shin Oak Creek.
This includes the following low water crossings ...
Park Road 73 crossing South Llano River...
FM 2169 crossing Johnson Fork Creek...
RM 385 crossing Perdenales River...
RM 385 crossing Falls Prong...
Old Segovia Rd. crossing Johnson Fork...
County Road 430 crossing Johnson Fork...
Flatrock Ln. crossing South Llano River...
County Road 430 crossing Joy Creek...
KC 451 crossing Johnson Fork and
crossings along County Road 410.
Do not drive through these low water crossings or any other
low water crossing with water flowing across the roadway.
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 3050 9982 3050 9930 3029 9930 3029 9990
3030 9990
FLASH FLOOD...RADAR INDICATED
$$The 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, 7:33 AM CDT | Flash Flood Warning | SJT | Irion, Tom Green | 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, 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.