Alert archive / Texas / Flash Flood Warnings in 2021

Flash Flood Warning 49, NWS San Angelo, TX

September 30, 20214 counties in Texas

NWS San Angelo, TX issued this flash flood warning at Sep 30, 2021, 3:29 PM CDT for 4 counties in Texas. It was in force for 3 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: Sep 30, 2021, 3:29 PM CDT (20:29 UTC)
Expired: Sep 30, 2021, 6:30 PM CDT
In force: 3 hr
Issued by: NWS San Angelo, TX
Area: Storm-based polygon
Damage threat: Considerable
Flood severity: None

Counties Callahan County, TX, Jones County, TX, Shackelford County, TX, Taylor County, TX

The radar

The Dyess AFB radar (KDYX), 38 km from the middle of the area, began a volume at 20:33 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
Sep 30, 4:15 PM CDT	FLASH FLOOD	Abilene, TX	LAW ENFORCEMENT REPORTS SEVERAL HIGH WATER RESCUES ONGOING IN ABILENE. A FLOODED HOME WAS ALSO REPORTED AT THE 1200 BLOCK OF WESTMORELAND STREET.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Fort Worth, TX (KFWD), launched 12:00Z, 8.5 hours before the alert went out and 223 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: 1415 J/kg
Mixed-layer CIN: -87 J/kg
Mixed-layer LCL: 687 m above ground
0-6 km bulk shear: 14 kt
0-1 km storm-relative helicity: 34 m²/s²
0-3 km storm-relative helicity: 46 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

968 
WGUS54 KSJT 302029
FFWSJT
TXC059-253-417-441-302330-
/O.NEW.KSJT.FF.W.0049.210930T2029Z-210930T2330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service San Angelo TX
329 PM CDT Thu Sep 30 2021

The National Weather Service in San Angelo has issued a

* Flash Flood Warning for...
  Northwestern Callahan County in west central Texas...
  Southeastern Jones County in west central Texas...
  Southwestern Shackelford County in west central Texas...
  Northeastern Taylor County in west central Texas...

* Until 630 PM CDT.

* At 329 PM CDT, Doppler radar indicated thunderstorms producing 
  heavy rain across 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...
  Abilene, Hamby, Impact and Lake Fort Phantom Hill.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood 
deaths occur in vehicles.

&&

LAT...LON 3262 9979 3266 9947 3265 9947 3240 9962
      3238 9980

FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE

$$

JW

1 follow-up statement

783 
WGUS74 KSJT 302137
FFSSJT

Flash Flood Statement
National Weather Service San Angelo TX
437 PM CDT Thu Sep 30 2021

TXC059-253-417-441-302330-
/O.CON.KSJT.FF.W.0049.000000T0000Z-210930T2330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Callahan TX-Jones TX-Shackelford TX-Taylor TX-
437 PM CDT Thu Sep 30 2021

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 630 PM CDT THIS 
EVENING FOR NORTHWESTERN CALLAHAN, SOUTHEASTERN JONES, SOUTHWESTERN 
SHACKELFORD AND NORTHEASTERN TAYLOR COUNTIES...

At 431 PM CDT, Local law enforcement reported several high water 
vehicle rescues in Abilene. One house was flooded on the 1200 block 
of Westmoreland Street. Also, significant flooding was occurring on 
Cat Claw and Cedar Creeks. Rainfall amounts have been 3 to 4 inches 
with additional rainfall amounts of 1 to 2 inches expected in the 
warned area through 630 pm. 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...
  Abilene, Hamby, Impact and Lake Fort Phantom Hill.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood 
deaths occur in vehicles.

&&

LAT...LON 3262 9979 3266 9947 3265 9947 3240 9962
      3238 9980

FLASH FLOOD...OBSERVED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE

$$

21

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 29, 7:04 PM CDT	Special Weather Statement	SJT	McCulloch	41 min
Sep 29, 8:16 PM CDT	Areal Flood Advisory	SJT	McCulloch, Menard	119 min
Sep 29, 8:32 PM CDT	Special Weather Statement	SJT	Menard	43 min
Sep 29, 9:21 PM CDT	Special Weather Statement	SJT	Mason	39 min
Sep 29, 9:48 PM CDT	Areal Flood Advisory	SJT	Kimble, Mason	117 min
Sep 30, 10:36 AM CDT	Special Weather Statement	SJT	Haskell	39 min
Sep 30, 12:58 PM CDT	Special Weather Statement	SJT	Nolan	47 min
Sep 30, 1:44 PM CDT	Flash Flood Warning Considerable damage threat	SJT	Nolan	3 hr
Sep 30, 1:46 PM CDT	Special Weather Statement	SJT	Shackelford	44 min
Sep 30, 2:06 PM CDT	Severe Thunderstorm Warning	SJT	Nolan	39 min
Sep 30, 2:27 PM CDT	Severe Thunderstorm Warning	SJT	Nolan	48 min
Sep 30, 2:42 PM CDT	Special Weather Statement	SJT	Jones	48 min
Sep 30, 2:44 PM CDT	Areal Flood Advisory	SJT	Jones, Taylor	2 hr
Sep 30, 2:50 PM CDT	Special Weather Statement	SJT	Sterling	40 min
Sep 30, 3:08 PM CDT	Flash Flood Warning Considerable damage threat	SJT	Nolan	3 hr
Sep 30, 3:16 PM CDT	Special Weather Statement	SJT	Fisher	44 min
Sep 30, 3:28 PM CDT	Special Weather Statement	SJT	Jones	47 min
Sep 30, 3:45 PM CDT	Severe Thunderstorm Warning	SJT	Fisher, Nolan, Taylor	28 min
Sep 30, 3:51 PM CDT	Severe Thunderstorm Warning	SJT	Jones, Taylor	39 min
Sep 30, 4:09 PM CDT	Areal Flood Advisory	SJT	Fisher, Jones, Nolan, Runnels, Taylor	2 hr
Sep 30, 4:27 PM CDT	Special Weather Statement	SJT	Runnels	48 min
Sep 30, 4:43 PM CDT	Special Weather Statement	SJT	Runnels	32 min
Sep 30, 5:16 PM CDT	Special Weather Statement	SJT	Callahan, Coleman	44 min
Sep 30, 5:50 PM CDT	Special Weather Statement	SJT	Crockett	40 min
Sep 30, 5:52 PM CDT	Areal Flood Advisory	SJT	Coleman, Concho, McCulloch, Runnels	113 min
Sep 30, 5:58 PM CDT	Severe Thunderstorm Warning	SJT	Coleman, Concho, McCulloch	47 min
Sep 30, 6:27 PM CDT	Areal Flood Advisory	SJT	Crockett, Irion	2 hr
Sep 30, 6:43 PM CDT	Severe Thunderstorm Warning	SJT	McCulloch	34 min
Sep 30, 6:46 PM CDT	Flash Flood Warning Considerable damage threat	SJT	Coleman, Concho, McCulloch	3 hr

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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.