Alert archive / Texas / Flash Flood Warnings in 2021

Flash Flood Warning 15, NWS San Angelo, TX

June 2, 2021McCulloch County, Texas

NWS San Angelo, TX issued this flash flood warning at Jun 2, 2021, 7:28 PM CDT for McCulloch 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: Jun 2, 2021, 7:28 PM CDT (00:28 UTC)
Expired: Jun 2, 2021, 9:30 PM CDT
In force: 2 hr
Issued by: NWS San Angelo, TX
Area: Storm-based polygon
Damage threat: Considerable
Flood severity: None

County McCulloch County, TX

The radar

The San Angelo radar (KSJT), 126 km from the middle of the area, began a volume at 00:28 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, 0.5 hours before the alert went out and 242 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: 1539 J/kg
Mixed-layer CIN: -55 J/kg
Mixed-layer LCL: 1421 m above ground
0-6 km bulk shear: 32 kt
0-1 km storm-relative helicity: -38 m²/s²
0-3 km storm-relative helicity: 7 m²/s²
Significant tornado parameter: -0.0
Supercell composite: -0.0

Open this sounding in Storm Lab

The text

As transmitted.

064 
WGUS54 KSJT 030028
FFWSJT
TXC307-030230-
/O.NEW.KSJT.FF.W.0015.210603T0028Z-210603T0230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service San Angelo TX
728 PM CDT Wed Jun 2 2021

The National Weather Service in San Angelo has issued a

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

* Until 930 PM CDT.

* At 728 PM CDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Between 2 and 3 inches of rain 
  have fallen. Additional rainfall amounts of 1 to 2 inches are 
  possible in 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...
  Camp San Saba, Voca and Calf Creek.

This includes the following Low Water Crossings...
FM 1851 crossing Tiger Creek, County Road 216 crossing Mud Creek and 
County Road 212 crossing San Saba River.

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 3107 9943 3111 9909 3109 9909 3108 9909
      3106 9909 3094 9909 3094 9950

FLASH FLOOD...RADAR INDICATED
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
Jun 2, 7:05 PM CDT	Special Weather Statement	SJT	McCulloch	40 min
Jun 2, 7:09 PM CDT	Areal Flood Advisory	SJT	McCulloch, Mason	3 hr
Jun 2, 7:25 PM CDT	Severe Thunderstorm Warning	SJT	San Saba	50 min
Jun 2, 7:45 PM CDT	Special Weather Statement	SJT	Mason	45 min
Jun 3, 1:01 AM CDT	Special Weather Statement	SJT	Irion, Sterling	59 min
Jun 3, 1:40 AM CDT	Areal Flood Advisory	SJT	Irion, Sterling, Tom Green	110 min
Jun 3, 2:17 AM CDT	Areal Flood Advisory	SJT	Irion, Tom Green	118 min
Jun 3, 3:10 AM CDT	Special Weather Statement	SJT	Crockett	65 min
Jun 3, 3:33 AM CDT	Areal Flood Advisory	SJT	Tom Green	117 min
Jun 3, 3:39 AM CDT	Areal Flood Advisory	SJT	Irion	111 min
Jun 3, 4:14 AM CDT	Special Weather Statement	SJT	Crockett, Schleicher, Sutton	61 min
Jun 3, 4:18 AM CDT	Areal Flood Advisory	SJT	Crockett	117 min
Jun 3, 4:25 AM CDT	Areal Flood Advisory	SJT	Crockett	2 hr
Jun 3, 4:32 AM CDT	Areal Flood Advisory	SJT	Schleicher	3 hr
Jun 3, 5:09 AM CDT	Special Weather Statement	SJT	Menard	66 min
Jun 3, 5:13 AM CDT	Areal Flood Advisory	SJT	Sutton	2 hr
Jun 3, 5:19 AM CDT	Areal Flood Advisory	SJT	Menard	116 min
Jun 3, 5:24 AM CDT	Special Weather Statement	SJT	Sutton	51 min
Jun 3, 5:30 AM CDT	Special Weather Statement	SJT	Kimble	60 min
Jun 3, 5:58 AM CDT	Areal Flood Advisory	SJT	Kimble	2 hr
Jun 3, 6:38 AM CDT	Areal Flood Advisory	SJT	Mason	112 min
Jun 3, 3:09 PM CDT	River Flood Warning	SJT	Fisher	5 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.