Alert archive / Texas / Flash Flood Warnings in 2021

Flash Flood Warning 5, NWS San Angelo, TX

May 19, 2021Irion County, Texas

NWS San Angelo, TX issued this flash flood warning at May 19, 2021, 6:26 PM CDT for Irion County, 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: May 19, 2021, 6:26 PM CDT (23:26 UTC)
Expired: May 19, 2021, 9:00 PM CDT
In force: 3 hr
Issued by: NWS San Angelo, TX
Area: Storm-based polygon
Damage threat: Considerable
Flood severity: None

County Irion County, TX

The radar

The San Angelo radar (KSJT), 64 km from the middle of the area, began a volume at 23:29 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
May 19, 7:30 PM CDT	FLASH FLOOD	Barnhart, TX	SO REPORTS NUMEROUS LOCATIONS ALONG FM 163 NORTH OF BARNHART UNDER WATER WITH DEBRIS FLOATING IN THE ROADWAY. FLOODING WAS ALSO REPORTED ON CR 401 AND CR 131.

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, 11.4 hours before the alert went out and 127 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: 1241 J/kg
Mixed-layer CIN: -34 J/kg
Mixed-layer LCL: 649 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: 112 m²/s²
0-3 km storm-relative helicity: 254 m²/s²
Significant tornado parameter: 1.0
Supercell composite: 9.6

Open this sounding in Storm Lab

The text

As transmitted.

999 
WGUS54 KSJT 192326
FFWSJT
TXC235-200200-
/O.NEW.KSJT.FF.W.0005.210519T2326Z-210520T0200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service San Angelo TX
626 PM CDT Wed May 19 2021

The National Weather Service in San Angelo has issued a

* Flash Flood Warning for...
  Southwestern Irion County in west central Texas...

* Until 900 PM CDT.

* At 626 PM CDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Between 1.5 and 3 inches of 
  rain have fallen. The expected rainfall rate is 1 to 2 inches in 2 
  hours and 30 minutes. 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...
  Barnhart.

This includes the following Low Water Crossings...
	crossings along County Road 302.

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 3134 10127 3136 10096 3125 10094 3110 10117
      3109 10127

FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
EXPECTED RAINFALL...1-2 INCHES IN 2 HOURS AND 30 MINUTES

$$

CRD

1 follow-up statement

774 
WGUS74 KSJT 200042
FFSSJT

Flash Flood Statement
National Weather Service San Angelo TX
742 PM CDT Wed May 19 2021

TXC235-200200-
/O.CON.KSJT.FF.W.0005.000000T0000Z-210520T0200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Irion TX-
742 PM CDT Wed May 19 2021

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 9 PM CDT THIS EVENING 
FOR SOUTHWESTERN IRION COUNTY...

At 740 PM CDT, Doppler radar indicated thunderstorms producing heavy 
rain across the warned area. Between 2 and 5 inches of rainfall has 
fallen in the warned area. Rainfall is beginning to decrease, but an 
additional one quarter to one half inch is possible.

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...
  Barnhart.

This includes the following Low Water Crossings...
	crossings along County Road 302.

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 3134 10127 3136 10096 3125 10094 3110 10117
      3109 10127

FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
EXPECTED RAINFALL...1-2 INCHES IN 2 HOURS AND 30 MINUTES

$$

CRD

The office that day

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

Issued	Product	Office	Counties	Lasted
May 19, 12:03 PM CDT	Special Weather Statement	SJT	Schleicher	42 min
May 19, 12:34 PM CDT	Special Weather Statement	SJT	Kimble	41 min
May 19, 1:51 PM CDT	Special Weather Statement	SJT	Concho	39 min
May 19, 2:27 PM CDT	Areal Flood Advisory	SJT	Concho, Runnels, Tom Green	2 hr
May 19, 2:35 PM CDT	Special Weather Statement	SJT	Concho	55 min
May 19, 2:52 PM CDT	Flash Flood Warning Considerable damage threat	SJT	Concho, Tom Green	96 min
May 19, 3:20 PM CDT	Areal Flood Advisory	SJT	Coleman, Concho, McCulloch, Runnels	3 hr
May 19, 3:22 PM CDT	Special Weather Statement	SJT	Menard	38 min
May 19, 3:31 PM CDT	Areal Flood Advisory	SJT	Schleicher, Tom Green	119 min
May 19, 3:35 PM CDT	Special Weather Statement	SJT	Concho	55 min
May 19, 4:06 PM CDT	Special Weather Statement	SJT	Concho	54 min
May 19, 4:43 PM CDT	Areal Flood Advisory	SJT	Coleman, Concho, McCulloch, Menard	2 hr
May 19, 5:31 PM CDT	Special Weather Statement	SJT	Crockett	59 min
May 19, 5:35 PM CDT	Special Weather Statement	SJT	Irion	40 min
May 19, 6:04 PM CDT	Areal Flood Advisory	SJT	Irion	116 min
May 19, 6:18 PM CDT	Special Weather Statement	SJT	Irion	42 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.