Alert archive / New Mexico / Flash Flood Warnings in 2021

Flash Flood Warning 38, NWS El Paso, TX

August 11, 2021Luna County, New Mexico

NWS El Paso, TX issued this flash flood warning at Aug 11, 2021, 5:23 PM MDT for Luna County, New Mexico. 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: Aug 11, 2021, 5:23 PM MDT (23:23 UTC)
Expired: Aug 11, 2021, 8:30 PM MDT
In force: 3 hr
Issued by: NWS El Paso, TX
Area: Storm-based polygon
Flood severity: None

County Luna County, NM

The radar

The El Paso radar (KEPZ), 121 km from the middle of the area, began a volume at 23:22 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
Aug 11, 7:00 PM MDT	FLASH FLOOD	19 W Columbus, NM	NMDOT REPORTED WATER FLOWING ACROSS HIGHWAY 9 WEST OF COLUMBUS.

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

The nearest sounding before it

Santa Teresa, NM (KEPZ), launched 12:00Z, 11.4 hours before the alert went out and 121 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: 41 J/kg
Mixed-layer CIN: -144 J/kg
Mixed-layer LCL: 1131 m above ground
0-6 km bulk shear: 4 kt
0-1 km storm-relative helicity: -12 m²/s²
0-3 km storm-relative helicity: 36 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

492 
WGUS54 KEPZ 112323
FFWEPZ
NMC029-120230-
/O.NEW.KEPZ.FF.W.0038.210811T2323Z-210812T0230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service El Paso Tx/Santa Teresa NM
523 PM MDT Wed Aug 11 2021

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

* Flash Flood Warning for...
  Southwestern Luna County in southwestern New Mexico...

* Until 830 PM MDT.

* At 523 PM MDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Between 3 and 3.5 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...
  Hermanas, Carzalia Valley and Camp Ramsey.

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.

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.

Please report observed flooding to local emergency services or law 
enforcement and request they pass this information to the National 
Weather Service when you can do so safely.

&&

LAT...LON 3192 10807 3198 10802 3193 10782 3178 10778
      3178 10800 3178 10801 3178 10805

FLASH FLOOD...RADAR INDICATED

$$

JL

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 10, 6:36 PM MDT	Special Weather Statement	EPZ	Doña Ana	24 min
Aug 10, 6:53 PM MDT	Severe Thunderstorm Warning	EPZ	Doña Ana	52 min
Aug 10, 6:59 PM MDT	Areal Flood Advisory	EPZ	Doña Ana	3 hr
Aug 11, 2:54 PM MDT	Areal Flood Advisory	EPZ	Luna	3 hr
Aug 11, 4:10 PM MDT	Areal Flood Advisory	EPZ	Doña Ana, Luna	2 hr
Aug 11, 4:50 PM MDT	Areal Flood Advisory	EPZ	Doña Ana, Otero	3 hr
Aug 11, 5:00 PM MDT	Areal Flood Advisory	EPZ	Luna	3 hr
Aug 11, 5:36 PM MDT	Special Weather Statement	EPZ		24 min

Nearby

Flash Flood Warnings in New Mexico, 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.