Alert archive / New Mexico / Flash Flood Warnings in 2021

Flash Flood Warning 83, NWS El Paso, TX

August 31, 2021Grant County, New Mexico

NWS El Paso, TX issued this flash flood warning at Aug 31, 2021, 1:59 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 31, 2021, 1:59 PM MDT (19:59 UTC)
Expired
Aug 31, 2021, 4:00 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 El Paso radar (KEPZ), 158 km from the middle of the area, began a volume at 20:01 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, 8.0 hours before the alert went out and 158 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 2021-08-31Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 376 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 2021-08-31The 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
376 J/kg
Mixed-layer CIN
-81 J/kg
Mixed-layer LCL
1449 m above ground
0-6 km bulk shear
5 kt
0-1 km storm-relative helicity
-21 m²/s²
0-3 km storm-relative helicity
-46 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

437 
WGUS54 KEPZ 311959
FFWEPZ
NMC017-312200-
/O.NEW.KEPZ.FF.W.0083.210831T1959Z-210831T2200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service El Paso Tx/Santa Teresa NM
159 PM MDT Tue Aug 31 2021

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

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

* Until 400 PM MDT.

* At 159 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 0.5 inches 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 Northeastern Grant County

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.

&&

LAT...LON 3290 10791 3288 10784 3282 10790 3284 10793

FLASH FLOOD...RADAR INDICATED

$$

JD
2 follow-up statements
773 
WGUS74 KEPZ 312029
FFSEPZ

Flash Flood Statement
National Weather Service El Paso Tx/Santa Teresa NM
229 PM MDT Tue Aug 31 2021

NMC017-312200-
/O.CON.KEPZ.FF.W.0083.000000T0000Z-210831T2200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Grant NM-
229 PM MDT Tue Aug 31 2021

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 4 PM MDT THIS 
AFTERNOON FOR NORTHEASTERN GRANT COUNTY...

At 229 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 0.5 inches 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 Northeastern Grant County

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.

&&

LAT...LON 3290 10791 3288 10784 3282 10790 3284 10793

FLASH FLOOD...RADAR INDICATED

$$

JD
665 
WGUS74 KEPZ 312155
FFSEPZ

Flash Flood Statement
National Weather Service El Paso Tx/Santa Teresa NM
355 PM MDT Tue Aug 31 2021

NMC017-312205-
/O.EXP.KEPZ.FF.W.0083.000000T0000Z-210831T2200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Grant NM-
355 PM MDT Tue Aug 31 2021

...FLASH FLOOD WARNING WILL EXPIRE AT 4 PM MDT THIS AFTERNOON FOR 
NORTHEASTERN GRANT COUNTY...

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

LAT...LON 3290 10791 3288 10784 3282 10790 3284 10793

$$

JD

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 31, 12:42 PM MDTAreal Flood AdvisoryEPZOtero3 hr
Aug 31, 1:21 PM MDTAreal Flood AdvisoryEPZOtero3 hr
Aug 31, 1:22 PM MDTAreal Flood AdvisoryEPZGrant, Hidalgo113 min
Aug 31, 1:39 PM MDTAreal Flood AdvisoryEPZGrant3 hr
Aug 31, 1:42 PM MDTAreal Flood AdvisoryEPZOtero3 hr
Aug 31, 1:52 PM MDTAreal Flood AdvisoryEPZGrant3 hr
Aug 31, 3:01 PM MDTFlash Flood WarningEPZGrant3 hr
Aug 31, 3:34 PM MDTAreal Flood AdvisoryEPZGrant3 hr
Aug 31, 4:27 PM MDTAreal Flood AdvisoryEPZLuna4 hr
Aug 31, 5:19 PM MDTAreal Flood AdvisoryEPZDoña Ana, Luna3 hr
Aug 31, 5:26 PM MDTAreal Flood AdvisoryEPZSierra2 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.