Alert archive / Texas / Flash Flood Warnings in 2021

Flash Flood Warning 40, NWS El Paso, TX

August 12, 2021Hudspeth County, Texas

NWS El Paso, TX issued this flash flood warning at Aug 12, 2021, 5:15 PM MDT for Hudspeth County, Texas. It was in force for 3 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
Aug 12, 2021, 5:15 PM MDT (23:15 UTC)
Expired
Aug 12, 2021, 8:15 PM MDT
In force
3 hr
Issued by
NWS El Paso, TX
Area
Storm-based polygon
Flood severity
None

County Hudspeth County, TX

The radar

The El Paso radar (KEPZ), 83 km from the middle of the area, began a volume at 23:14 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

Santa Teresa, NM (KEPZ), launched 12:00Z, 11.3 hours before the alert went out and 83 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-pSkew-T log-p diagram, Santa Teresa, NM at 12:00Z on 2021-08-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 794 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Santa Teresa, NM at 12:00Z on 2021-08-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 74 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
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
794 J/kg
Mixed-layer CIN
-55 J/kg
Mixed-layer LCL
896 m above ground
0-6 km bulk shear
9 kt
0-1 km storm-relative helicity
74 m²/s²
0-3 km storm-relative helicity
122 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

517 
WGUS54 KEPZ 122315
FFWEPZ
TXC229-130215-
/O.NEW.KEPZ.FF.W.0040.210812T2315Z-210813T0215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service El Paso Tx/Santa Teresa NM
515 PM MDT Thu Aug 12 2021

The National Weather Service in El Paso Tx/Santa Teresa has issued a

* Flash Flood Warning for...
  Northwestern Hudspeth County in western Texas...

* Until 815 PM MDT.

* At 515 PM MDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Between 2 and 3 inches of rain 
  have fallen. 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...
  mainly rural areas of Northwestern Hudspeth County

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

In hilly terrain there are numerous of low water crossings which are 
potentially dangerous in heavy rain. Do not attempt to cross flooded 
roads. Find an alternate route.

Remain alert for flooding even in locations not receiving rain. 
Arroyos, streams, and rivers can become raging killer currents in a 
matter of minutes, even from distant rainfall.

&&

LAT...LON 3200 10585 3200 10581 3198 10580 3197 10581
      3197 10583 3198 10584

FLASH FLOOD...RADAR INDICATED

$$

AB

The office that day

Everything else NWS El Paso, TX issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 11, 7:04 PM MDTAreal Flood AdvisoryEPZEl Paso3 hr
Aug 11, 10:11 PM MDTAreal Flood AdvisoryEPZHudspeth2 hr
Aug 11, 10:33 PM MDTAreal Flood AdvisoryEPZHudspeth117 min
Aug 12, 11:41 AM MDTFlood WatchEPZEl Paso, Hudspeth4 hr
Aug 12, 3:14 PM MDTFlash Flood WatchEPZEl Paso, Hudspeth4 days
Aug 12, 3:26 PM MDTAreal Flood AdvisoryEPZHudspeth2 hr
Aug 12, 4:46 PM MDTAreal Flood AdvisoryEPZHudspeth119 min
Aug 12, 5:06 PM MDTSpecial Weather StatementEPZEl Paso24 min
Aug 12, 5:33 PM MDTSpecial Weather StatementEPZEl Paso27 min
Aug 12, 5:50 PM MDTAreal Flood AdvisoryEPZEl Paso, Hudspeth115 min
Aug 12, 5:56 PM MDTSpecial Weather StatementEPZEl Paso34 min

Nearby

Flash Flood Warnings in Texas, 2021Every 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.