Alert archive / New Mexico / Flash Flood Warnings in 2021

Flash Flood Warning 81, NWS El Paso, TX

August 27, 2021Grant County, New Mexico

NWS El Paso, TX issued this flash flood warning at Aug 27, 2021, 2:19 PM MDT for Grant County, New Mexico. 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 27, 2021, 2:19 PM MDT (20:19 UTC)
Expired: Aug 27, 2021, 5:30 PM MDT
In force: 3 hr
Issued by: NWS El Paso, TX
Area: Storm-based polygon
Flood severity: None

County Grant County, NM

The radar

The Holloman AFB radar (KHDX), 199 km from the middle of the area, began a volume at 20:20 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, 8.3 hours before the alert went out and 206 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: 304 J/kg
Mixed-layer CIN: -94 J/kg
Mixed-layer LCL: 1780 m above ground
0-6 km bulk shear: 10 kt
0-1 km storm-relative helicity: -4 m²/s²
0-3 km storm-relative helicity: 37 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

785 
WGUS54 KEPZ 272019
FFWEPZ
NMC017-272330-
/O.NEW.KEPZ.FF.W.0081.210827T2019Z-210827T2330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service El Paso Tx/Santa Teresa NM
219 PM MDT Fri Aug 27 2021

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

* Flash Flood Warning for...
  Northern Grant County in southwestern New Mexico...

* Until 530 PM MDT.

* At 219 PM MDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Between 1 and 2 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...
  Gila Hot Springs.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Move away from recently burned areas. Life-threatening flooding of 
creeks, roads and normally dry arroyos is likely. The heavy rains 
will likely trigger rockslides, mudslides and debris flows in steep 
terrain, especially in and around these areas.

Flooding is occurring or is imminent. It is important to know where 
you are relative to streams, rivers, or creeks which can become 
killers in heavy rains. Campers and hikers should avoid streams or 
creeks.

&&

LAT...LON 3320 10821 3320 10819 3316 10821 3312 10827
      3320 10834 3320 10831 3320 10829 3320 10825
      3320 10824 3320 10822

FLASH FLOOD...RADAR INDICATED

$$

AB

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 27, 1:08 PM MDT	Special Weather Statement	EPZ	Grant	37 min
Aug 27, 1:18 PM MDT	Areal Flood Advisory	EPZ	Otero	117 min
Aug 27, 1:39 PM MDT	Areal Flood Advisory	EPZ	Grant	3 hr
Aug 27, 1:42 PM MDT	Severe Thunderstorm Warning	EPZ	Grant	33 min
Aug 27, 1:54 PM MDT	Areal Flood Advisory	EPZ	Otero	2 hr
Aug 27, 2:12 PM MDT	Special Weather Statement	EPZ		33 min
Aug 27, 2:43 PM MDT	Special Weather Statement	EPZ		32 min
Aug 27, 2:52 PM MDT	Areal Flood Advisory	EPZ	Grant, Sierra	113 min
Aug 27, 3:25 PM MDT	Special Weather Statement	EPZ		35 min
Aug 27, 3:44 PM MDT	Special Weather Statement	EPZ	Otero	31 min
Aug 27, 4:11 PM MDT	Special Weather Statement	EPZ		34 min
Aug 27, 4:34 PM MDT	Special Weather Statement	EPZ	Sierra	26 min
Aug 27, 5:08 PM MDT	Areal Flood Advisory	EPZ	Sierra	31 min
Aug 27, 5:22 PM MDT	Special Weather Statement	EPZ	Sierra	23 min
Aug 27, 5:39 PM MDT	Flash Flood Warning	EPZ	Sierra	3 hr
Aug 27, 5:50 PM MDT	Special Weather Statement	EPZ	Doña Ana	25 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.