Alert archive / Texas / Flash Flood Warnings in 2017

Flash Flood Warning 21, NWS El Paso, TX

July 22, 2017Hudspeth County, Texas

NWS El Paso, TX issued this flash flood warning at Jul 22, 2017, 1:13 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
Jul 22, 2017, 1:13 PM MDT (19:13 UTC)
Expired
Jul 22, 2017, 4:15 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), 162 km from the middle of the area, began a volume at 19:13 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, 7.2 hours before the alert went out and 162 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 2017-07-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 578 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 2017-07-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 21 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
578 J/kg
Mixed-layer CIN
-71 J/kg
Mixed-layer LCL
1168 m above ground
0-6 km bulk shear
4 kt
0-1 km storm-relative helicity
21 m²/s²
0-3 km storm-relative helicity
20 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

871 
WGUS54 KEPZ 221913
FFWEPZ
TXC229-222215-
/O.NEW.KEPZ.FF.W.0021.170722T1913Z-170722T2215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service El Paso TX
113 PM MDT SAT JUL 22 2017

The National Weather Service in El Paso has issued a

* Flash Flood Warning for...
  South central Hudspeth County in southwestern Texas...

* Until 415 PM MDT

* At 111 PM MDT, Doppler radar indicated thunderstorms producing
  heavy rain across the warned area. Flash flooding is expected to 
  begin shortly around Indian Hot Springs Road and I-10, west of 
  Sierra Blanca.

* Flash flooding will remain over mainly rural areas of south central
  Hudspeth County.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Excessive runoff from heavy rainfall will cause flooding of small
creeks and streams, country roads, farmland, and other low lying
spots.

In hilly terrain there are hundreds 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 3114 10519 3094 10527 3095 10537 3118 10535

$$

CRESPO

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 22, 12:27 PM MDTAreal Flood AdvisoryEPZHudspeth3 hr
Jul 22, 2:10 PM MDTAreal Flood AdvisoryEPZHudspeth3 hr
Jul 22, 4:10 PM MDTAreal Flood AdvisoryEPZEl Paso, Hudspeth3 hr
Jul 22, 4:30 PM MDTAreal Flood AdvisoryEPZEl Paso3 hr
Jul 22, 4:37 PM MDTSevere Thunderstorm WarningEPZEl Paso38 min

Nearby

Flash Flood Warnings in Texas, 2017Every flash flood warning in 2017

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.