Alert archive / Texas / Flash Flood Warnings in 2021
Flash Flood Warning 52, NWS San Angelo, TX
NWS San Angelo, TX issued this flash flood warning at Oct 1, 2021, 12:12 AM CDT for Mason County, Texas. It was in force for 2 hr. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Oct 1, 2021, 12:12 AM CDT (05:12 UTC)
- Expired
- Oct 1, 2021, 2:15 AM CDT
- In force
- 2 hr
- Issued by
- NWS San Angelo, TX
- Area
- Storm-based polygon
- Damage threat
- Considerable
- Flood severity
- None
County Mason County, TX
The radar
The San Angelo radar (KSJT), 142 km from the middle of the area, began a volume at 05:12 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 00:00Z, 5.2 hours before the alert went out and 221 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
- 2844 J/kg
- Mixed-layer CIN
- -14 J/kg
- Mixed-layer LCL
- 1576 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- 50 m²/s²
- 0-3 km storm-relative helicity
- 135 m²/s²
- Significant tornado parameter
- 0.6
- Supercell composite
- 7.3
The text
As transmitted.
267
WGUS54 KSJT 010512
FFWSJT
TXC319-010715-
/O.NEW.KSJT.FF.W.0052.211001T0512Z-211001T0715Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service San Angelo TX
1212 AM CDT Fri Oct 1 2021
The National Weather Service in San Angelo has issued a
* Flash Flood Warning for...
Mason County in west central Texas...
* Until 215 AM CDT.
* At 1210 AM CDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Between 3 and 4 inches of rain
have fallen 10 miles southwest of Mason. Additional rainfall
amounts of 1 to 2 inches are likely in the warned area as storms
move east across Mason County. 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...
Mason, Art, Hedwigs Hill, Hilda, Grit, Streeter, Katemcy, Camp
Air, Loyal Valley, Fredonia, Pontotoc, Koockville, The
Intersection Of Highway 29 And Ranch Road 1222 and Us-87 Near The
Mason-Gillespie County Line.
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.
&&
LAT...LON 3050 9941 3094 9939 3094 9909 3092 9909
3092 9896 3050 9896
FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
$$The office that day
Everything else NWS San Angelo, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 30, 7:14 PM CDT | Special Weather Statement | SJT | Crockett | 46 min |
| Sep 30, 7:32 PM CDT | Special Weather Statement | SJT | McCulloch | 43 min |
| Sep 30, 7:49 PM CDT | Areal Flood Advisory | SJT | McCulloch, San Saba | 3 hr |
| Sep 30, 8:09 PM CDT | Flash Flood Warning | SJT | McCulloch, San Saba | 3 hr |
| Sep 30, 9:54 PM CDT | Areal Flood Advisory | SJT | Kimble, McCulloch, Mason, Menard, Schleicher, Sutton | 3 hr |
| Sep 30, 10:26 PM CDT | Severe Thunderstorm Warning | SJT | Kimble, Mason, Menard | 49 min |
| Sep 30, 11:27 PM CDT | Special Weather Statement | SJT | Mason | 48 min |
| Oct 1, 2:32 AM CDT | Areal Flood Advisory | SJT | San Saba | 3 hr |
| Oct 1, 6:33 PM CDT | Special Weather Statement | SJT | Crockett | 42 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.