Alert archive / Texas / Flash Flood Warnings in 2021

Flash Flood Warning 30, NWS Austin/San Antonio, TX

May 31, 2021Maverick County, Texas

NWS Austin/San Antonio, TX issued this flash flood warning at May 31, 2021, 11:47 PM CDT for Maverick 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 31, 2021, 11:47 PM CDT (04:47 UTC)
Expired: Jun 1, 2021, 3:00 AM CDT
In force: 3 hr
Issued by: NWS Austin/San Antonio, TX
Area: Storm-based polygon
Damage threat: Considerable
Flood severity: None

County Maverick County, TX

The radar

The Laughlin AFB radar (KDFX), 57 km from the middle of the area, began a volume at 04:50 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
Jun 1, 1:20 AM CDT	FLASH FLOOD	1 Se Eagle Pass, TX	PHOTO ON SOCIAL MEDIA SHOWS WATER COMPLETELY OVER EL INDIO HIGHWAY WITH WATER OVER THE BUMPER OF SEVERAL VEHICLES.

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

The nearest sounding before it

Del Rio, TX (KDRT), launched 00:00Z, 4.8 hours before the alert went out and 73 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: 2624 J/kg
Mixed-layer CIN: -5 J/kg
Mixed-layer LCL: 922 m above ground
0-6 km bulk shear: 40 kt
0-1 km storm-relative helicity: 51 m²/s²
0-3 km storm-relative helicity: 176 m²/s²
Significant tornado parameter: 2.8
Supercell composite: 11.0

Open this sounding in Storm Lab

The text

As transmitted.

841 
WGUS54 KEWX 010447
FFWEWX
TXC323-010800-
/O.NEW.KEWX.FF.W.0030.210601T0447Z-210601T0800Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Austin/San Antonio TX
1147 PM CDT Mon May 31 2021

The National Weather Service in Austin/San Antonio has issued a

* Flash Flood Warning for...
  Northern Maverick County in south central Texas...

* Until 300 AM CDT.

* At 1147 PM CDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Between 1 and 2 inches of rain 
  have fallen. Additional rainfall amounts of 1 to 3 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...
  Eagle Pass, Chula Vista, Paloma, Radar Base, Darling, Rosita, 
  Normandy, Elm Creek, Siesta Acres, Fabrica, Seco Mines, Las 
  Quintas Fronterizas and Eidson Road.

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.

&&

LAT...LON 2891 10062 2890 10061 2898 10053 2908 10051
      2909 10022 2857 10021 2857 10040 2858 10040
      2861 10045 2864 10045 2866 10050 2871 10051
      2874 10051 2876 10053 2880 10053 2883 10055
      2883 10057 2885 10057

FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
EXPECTED RAINFALL...2-3 INCHES IN 1 HOUR

$$

RUNYEN

1 follow-up statement

079 
WGUS74 KEWX 010752
FFSEWX

Flash Flood Statement
National Weather Service Austin/San Antonio TX
252 AM CDT Tue Jun 1 2021

TXC323-010802-
/O.EXP.KEWX.FF.W.0030.000000T0000Z-210601T0800Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Maverick TX-
252 AM CDT Tue Jun 1 2021

...FLASH FLOOD WARNING WILL EXPIRE AT 3 AM CDT EARLY THIS MORNING 
FOR NORTHERN MAVERICK COUNTY...

The heavy rain has ended. Flooding is no longer expected to pose a 
threat. Please continue to heed remaining road closures.

LAT...LON 2891 10062 2890 10061 2898 10053 2908 10051
      2909 10022 2857 10021 2857 10040 2858 10040
      2861 10045 2864 10045 2866 10050 2871 10051
      2874 10051 2876 10053 2880 10053 2883 10055
      2883 10057 2885 10057

$$

HAMPSHIRE

The office that day

Everything else NWS Austin/San Antonio, TX issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 31, 8:31 PM CDT	Special Weather Statement	EWX	Val Verde	44 min
May 31, 8:35 PM CDT	Special Weather Statement	EWX	Val Verde	40 min
May 31, 9:14 PM CDT	Special Weather Statement	EWX	Val Verde	46 min
May 31, 9:23 PM CDT	Severe Thunderstorm Warning	EWX	Val Verde	43 min
May 31, 9:48 PM CDT	Flash Flood Warning Considerable damage threat	EWX	Val Verde	2 hr
May 31, 10:22 PM CDT	Areal Flood Advisory	EWX	Williamson	3 hr
May 31, 10:38 PM CDT	Special Weather Statement	EWX	Kinney	52 min
May 31, 11:00 PM CDT	Areal Flood Advisory	EWX	Kinney, Maverick	26 min
May 31, 11:15 PM CDT	Severe Thunderstorm Warning	EWX	Kinney, Maverick	60 min
May 31, 11:26 PM CDT	Flash Flood Warning Considerable damage threat	EWX	Kinney, Maverick	3 hr
May 31, 11:32 PM CDT	Special Weather Statement	EWX	Gillespie	43 min
May 31, 11:51 PM CDT	Special Weather Statement	EWX	Maverick	24 min
Jun 1, 12:08 AM CDT	Severe Thunderstorm Warning	EWX	Dimmit, Maverick, Zavala	67 min
Jun 1, 12:14 AM CDT	Areal Flood Advisory	EWX	Gillespie	3 hr
Jun 1, 12:44 AM CDT	Flash Flood Warning Considerable damage threat	EWX	Dimmit, Maverick, Zavala	3 hr
Jun 1, 12:54 AM CDT	Areal Flood Advisory	EWX	Blanco, Burnet, Llano	3 hr
Jun 1, 12:55 AM CDT	Severe Thunderstorm Warning	EWX	Dimmit, Frio, Maverick, Zavala	65 min
Jun 1, 1:19 AM CDT	Areal Flood Advisory	EWX	Travis, Williamson	3 hr
Jun 1, 1:36 AM CDT	Areal Flood Advisory	EWX	Bexar, Medina	3 hr
Jun 1, 1:57 AM CDT	Severe Thunderstorm Warning	EWX	Dimmit, Frio, Zavala	63 min
Jun 1, 2:08 AM CDT	Areal Flood Advisory	EWX	Dimmit, Zavala	4 hr
Jun 1, 2:34 AM CDT	Areal Flood Advisory	EWX	Bastrop, Caldwell, Lee	3 hr
Jun 1, 2:56 AM CDT	Areal Flood Advisory	EWX	Atascosa, Bexar, Frio, Medina	3 hr
Jun 1, 2:56 AM CDT	Special Weather Statement	EWX	Frio	49 min
Jun 1, 3:13 AM CDT	Areal Flood Advisory	EWX	Gonzales	3 hr
Jun 1, 3:34 AM CDT	Areal Flood Advisory	EWX	Atascosa	2 hr
Jun 1, 3:40 AM CDT	Areal Flood Advisory	EWX	Dimmit, Maverick, Zavala	2 hr
Jun 1, 3:57 AM CDT	Areal Flood Advisory	EWX	Karnes, Wilson	2 hr
Jun 1, 4:34 AM CDT	Areal Flood Advisory	EWX	DeWitt, Karnes	3 hr
Jun 1, 5:07 AM CDT	Flash Flood Warning Considerable damage threat	EWX	DeWitt, Gonzales, Karnes	3 hr
Jun 1, 6:02 AM CDT	Special Weather Statement	EWX	Bexar, Comal, Guadalupe	58 min
Jun 1, 7:39 AM CDT	River Flood Warning	EWX	Williamson	6 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.