Alert archive / New Mexico / Flash Flood Warnings in 2021

Flash Flood Warning 36, NWS El Paso, TX

August 3, 2021Grant County, New Mexico

NWS El Paso, TX issued this flash flood warning at Aug 3, 2021, 5:12 PM MDT for Grant County, New Mexico. It was in force for 2 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 3, 2021, 5:12 PM MDT (23:12 UTC)
Expired
Aug 3, 2021, 7:15 PM MDT
In force
2 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), 200 km from the middle of the area, began a volume at 23:11 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, 11.2 hours before the alert went out and 203 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 2021-08-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 20 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 2021-08-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -4 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
20 J/kg
Mixed-layer CIN
-152 J/kg
Mixed-layer LCL
1314 m above ground
0-6 km bulk shear
3 kt
0-1 km storm-relative helicity
-4 m²/s²
0-3 km storm-relative helicity
59 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

352 
WGUS54 KEPZ 032312
FFWEPZ
NMC017-040115-
/O.NEW.KEPZ.FF.W.0036.210803T2312Z-210804T0115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service El Paso Tx/Santa Teresa NM
512 PM MDT Tue Aug 3 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 715 PM MDT.

* At 512 PM MDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Between 1 and 2 inches of rain 
  have fallen. Additional rainfall amounts up to 1 inch are possible 
  in the warned area. 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 Northern Grant County

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.

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.

&&

LAT...LON 3308 10828 3316 10833 3318 10826 3313 10819

FLASH FLOOD...RADAR INDICATED

$$

JD
2 follow-up statements
780 
WGUS74 KEPZ 040000
FFSEPZ

Flash Flood Statement
National Weather Service El Paso Tx/Santa Teresa NM
600 PM MDT Tue Aug 3 2021

NMC017-040115-
/O.CON.KEPZ.FF.W.0036.000000T0000Z-210804T0115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Grant NM-
600 PM MDT Tue Aug 3 2021

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 715 PM MDT THIS 
EVENING FOR NORTHERN GRANT COUNTY...

At 600 PM MDT, Doppler radar indicated thunderstorms producing heavy 
rain across the warned area. Between 1 and 2 inches of rain have 
fallen. Additional rainfall amounts up to 1 inch are possible in the 
warned area. 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 Northern Grant County

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.

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.

&&

LAT...LON 3308 10828 3316 10833 3318 10826 3313 10819

FLASH FLOOD...RADAR INDICATED

$$

JD
480 
WGUS74 KEPZ 040111
FFSEPZ

Flash Flood Statement
National Weather Service El Paso Tx/Santa Teresa NM
711 PM MDT Tue Aug 3 2021

NMC017-040121-
/O.EXP.KEPZ.FF.W.0036.000000T0000Z-210804T0115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Grant NM-
711 PM MDT Tue Aug 3 2021

...FLASH FLOOD WARNING WILL EXPIRE AT 715 PM MDT THIS EVENING FOR 
NORTHERN GRANT COUNTY...

The heavy rain has ended. Flooding is no longer expected to pose a 
threat. Please continue to heed remaining road closures.

LAT...LON 3308 10828 3316 10833 3318 10826 3313 10819

$$

JD

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 2, 6:30 PM MDTSevere Thunderstorm WarningEPZHidalgo30 min
Aug 2, 6:37 PM MDTSpecial Weather StatementEPZ23 min
Aug 2, 7:07 PM MDTAreal Flood AdvisoryEPZHidalgo113 min
Aug 2, 8:13 PM MDTAreal Flood AdvisoryEPZHidalgo2 hr
Aug 2, 8:58 PM MDTAreal Flood AdvisoryEPZHidalgo2 hr
Aug 3, 12:39 PM MDTAreal Flood AdvisoryEPZOtero3 hr
Aug 3, 2:26 PM MDTAreal Flood AdvisoryEPZGrant, Sierra2 hr
Aug 3, 2:34 PM MDTAreal Flood AdvisoryEPZOtero116 min
Aug 3, 2:42 PM MDTFlash Flood WarningEPZGrant, Sierra2 hr
Aug 3, 3:21 PM MDTSevere Thunderstorm WarningEPZGrant39 min
Aug 3, 3:49 PM MDTFlash Flood WarningEPZGrant3 hr
Aug 3, 4:05 PM MDTAreal Flood AdvisoryEPZGrant, Luna3 hr
Aug 3, 4:36 PM MDTAreal Flood AdvisoryEPZGrant, Luna54 min
Aug 3, 4:48 PM MDTAreal Flood AdvisoryEPZGrant117 min
Aug 3, 4:50 PM MDTAreal Flood AdvisoryEPZGrant, Luna115 min
Aug 3, 5:17 PM MDTSevere Thunderstorm WarningEPZGrant28 min
Aug 3, 5:41 PM MDTAreal Flood AdvisoryEPZGrant, Luna2 hr

Nearby

Flash Flood Warnings in New Mexico, 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.