Alert archive / Texas / Flash Flood Warnings in 2021

Flash Flood Warning 6, NWS San Angelo, TX

May 25, 2021Taylor County, Texas

NWS San Angelo, TX issued this flash flood warning at May 25, 2021, 10:57 PM CDT for Taylor 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: May 25, 2021, 10:57 PM CDT (03:57 UTC)
Expired: May 26, 2021, 1:00 AM CDT
In force: 2 hr
Issued by: NWS San Angelo, TX
Area: Storm-based polygon
Flood severity: None

County Taylor County, TX

The radar

The Dyess AFB radar (KDYX), 61 km from the middle of the area, began a volume at 03:59 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

Midland Regional, TX (KMAF), launched 00:00Z, 4.0 hours before the alert went out and 236 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 4 J/kg
Mixed-layer CIN: -243 J/kg
Mixed-layer LCL: 3321 m above ground
0-6 km bulk shear: 34 kt
0-1 km storm-relative helicity: -19 m²/s²
0-3 km storm-relative helicity: 203 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -3.6

Open this sounding in Storm Lab

The text

As transmitted.

743 
WGUS54 KSJT 260357
FFWSJT
TXC441-260600-
/O.NEW.KSJT.FF.W.0006.210526T0357Z-210526T0600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service San Angelo TX
1057 PM CDT Tue May 25 2021

The National Weather Service in San Angelo has issued a

* Flash Flood Warning for...
  Southeastern Taylor County in west central Texas...

* Until 100 AM CDT.

* At 1055 PM CDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Between 1.5 and 2.5 inches of 
  rain have fallen. Additional rainfall amounts of 1 to 2 inches are 
  possible in the warned area through 1 AM. 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...
  Lawn.

This includes the following Low Water Crossings...
County Road 163 crossing Jim Ned Creek, County Road 162 crossing 
Gray Branch, County Road 159 crossing Twomile Creek and crossings 
along County Road 134.

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 3208 9976 3222 9976 3227 9963 3208 9963

FLASH FLOOD...RADAR INDICATED

$$

21

The office that day

Everything else NWS San Angelo, TX issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 25, 7:10 PM CDT	Special Weather Statement	SJT	Sterling	50 min
May 25, 8:34 PM CDT	Special Weather Statement	SJT	Coke, Nolan, Runnels	41 min
May 25, 8:53 PM CDT	Special Weather Statement	SJT	Nolan	52 min
May 25, 9:16 PM CDT	Severe Thunderstorm Warning	SJT	Fisher	28 min
May 25, 9:18 PM CDT	Severe Thunderstorm Warning	SJT	Coke, Nolan, Runnels, Taylor	57 min
May 25, 9:29 PM CDT	Severe Thunderstorm Warning	SJT	Haskell	46 min
May 25, 9:39 PM CDT	Special Weather Statement	SJT	Taylor	51 min
May 25, 9:51 PM CDT	Severe Thunderstorm Warning	SJT	Callahan, Taylor	39 min
May 25, 9:53 PM CDT	Areal Flood Advisory	SJT	Coke, Nolan, Runnels, Taylor	112 min
May 25, 9:59 PM CDT	Severe Thunderstorm Warning	SJT	Callahan, Taylor	46 min
May 25, 10:06 PM CDT	Severe Thunderstorm Warning	SJT	Runnels, Taylor	54 min
May 25, 10:08 PM CDT	Special Weather Statement	SJT	Haskell	67 min
May 25, 10:26 PM CDT	Special Weather Statement	SJT	Callahan	64 min
May 25, 10:36 PM CDT	Areal Flood Advisory	SJT	Runnels, Taylor	114 min
May 25, 10:36 PM CDT	Severe Thunderstorm Warning	SJT	Callahan, Coleman, Taylor	54 min
May 25, 11:04 PM CDT	Severe Thunderstorm Warning	SJT	Concho, Runnels	56 min
May 25, 11:22 PM CDT	Severe Thunderstorm Warning	SJT	Brown, Coleman, Concho, McCulloch	53 min
May 26, 12:15 AM CDT	Special Weather Statement	SJT	McCulloch	60 min
May 26, 1:07 AM CDT	Special Weather Statement	SJT	San Saba	53 min

Nearby

Flash Flood Warnings in Texas, 2021 Every 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.