Alert archive / New Mexico / Flash Flood Warnings in 2021

Flash Flood Warning 71, NWS El Paso, TX

August 22, 2021Grant County, Hidalgo County, New Mexico

NWS El Paso, TX issued this flash flood warning at Aug 22, 2021, 12:27 AM MDT for Grant County, Hidalgo County, New Mexico. It was in force for 4 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 22, 2021, 12:27 AM MDT (06:27 UTC)
Expired: Aug 22, 2021, 4:30 AM MDT
In force: 4 hr
Issued by: NWS El Paso, TX
Area: Storm-based polygon
Flood severity: None

Counties Grant County, NM, Hidalgo County, NM

The radar

The El Paso radar (KEPZ), 181 km from the middle of the area, began a volume at 06:29 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 00:00Z, 6.5 hours before the alert went out and 180 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: 532 J/kg
Mixed-layer CIN: -6 J/kg
Mixed-layer LCL: 2307 m above ground
0-6 km bulk shear: 11 kt
0-1 km storm-relative helicity: -11 m²/s²
0-3 km storm-relative helicity: 22 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

153 
WGUS54 KEPZ 220627
FFWEPZ
NMC017-023-221030-
/O.NEW.KEPZ.FF.W.0071.210822T0627Z-210822T1030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service El Paso Tx/Santa Teresa NM
1227 AM MDT Sun Aug 22 2021

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

* Flash Flood Warning for...
  Southwestern Grant County in southwestern New Mexico...
  Central Hidalgo County in southwestern New Mexico...

* Until 430 AM MDT.

* At 1227 AM MDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Between 2 and 4 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, and
           highways as well as other poor drainage and low-lying
           areas.

* Some locations that will experience flash flooding include...
  mainly rural areas of Southwestern Grant and Central Hidalgo 
  Counties including state New Mexico State Highway 113 just south 
  of Interstate 10

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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

&&

LAT...LON 3225 10854 3225 10857 3228 10861 3231 10864
      3233 10866 3235 10865 3233 10862 3231 10861
      3231 10857 3235 10851 3237 10849 3237 10844
      3234 10840 3228 10842 3225 10847 3225 10853

FLASH FLOOD...RADAR INDICATED

$$

TSB

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 21, 8:31 PM MDT	Areal Flood Advisory	EPZ	Hidalgo	119 min
Aug 21, 9:20 PM MDT	Areal Flood Advisory	EPZ	Sierra	115 min
Aug 21, 10:32 PM MDT	Areal Flood Advisory	EPZ	Grant	118 min
Aug 22, 2:01 AM MDT	Flash Flood Watch	EPZ	Otero	22 hr
Aug 22, 1:05 PM MDT	Areal Flood Advisory	EPZ	Otero	115 min
Aug 22, 2:32 PM MDT	Areal Flood Advisory	EPZ	Sierra	118 min
Aug 22, 2:53 PM MDT	Areal Flood Advisory	EPZ	Otero	112 min
Aug 22, 5:40 PM MDT	Areal Flood Advisory	EPZ	Doña Ana, Sierra	2 hr

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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.