Alert archive / New Mexico / Flash Flood Warnings in 2021

Flash Flood Warning 87, NWS El Paso, TX

September 2, 2021Otero County, New Mexico

NWS El Paso, TX issued this flash flood warning at Sep 2, 2021, 3:18 PM MDT for Otero 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
Sep 2, 2021, 3:18 PM MDT (21:18 UTC)
Expired
Sep 2, 2021, 6:30 PM MDT
In force
3 hr
Issued by
NWS El Paso, TX
Area
Storm-based polygon
Flood severity
None

County Otero County, NM

The radar

The Holloman AFB radar (KHDX), 61 km from the middle of the area, began a volume at 21:22 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.

The nearest sounding before it

Santa Teresa, NM (KEPZ), launched 12:00Z, 9.3 hours before the alert went out and 162 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 2021-09-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 95 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 2021-09-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -9 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
95 J/kg
Mixed-layer CIN
-83 J/kg
Mixed-layer LCL
1119 m above ground
0-6 km bulk shear
13 kt
0-1 km storm-relative helicity
-9 m²/s²
0-3 km storm-relative helicity
30 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

857 
WGUS54 KEPZ 022118
FFWEPZ
NMC035-030030-
/O.NEW.KEPZ.FF.W.0087.210902T2118Z-210903T0030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service El Paso Tx/Santa Teresa NM
318 PM MDT Thu Sep 2 2021

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

* Flash Flood Warning for...
  Central Otero County in south central New Mexico...

* Until 630 PM MDT.

* At 318 PM MDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Between 1 and 1.5 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...
  Mayhill.

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 3289 10553 3293 10553 3296 10552 3296 10547
      3292 10543 3289 10545 3287 10551

FLASH FLOOD...RADAR INDICATED

$$

JD
2 follow-up statements
376 
WGUS74 KEPZ 022251
FFSEPZ

Flash Flood Statement
National Weather Service El Paso Tx/Santa Teresa NM
451 PM MDT Thu Sep 2 2021

NMC035-030030-
/O.CON.KEPZ.FF.W.0087.000000T0000Z-210903T0030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Otero NM-
451 PM MDT Thu Sep 2 2021

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 630 PM MDT THIS 
EVENING FOR CENTRAL OTERO COUNTY...

At 451 PM MDT, Doppler radar indicated thunderstorms producing heavy 
rain across the warned area. Most of the heavy rain has ended but 
flash flooding is ongoing or expected to begin shortly. Between 1 
and 2 inches of rain have fallen.

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...
  Mayhill.

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 3289 10553 3293 10553 3296 10552 3296 10547
      3292 10543 3289 10545 3287 10551

FLASH FLOOD...RADAR INDICATED

$$

JD
691 
WGUS74 KEPZ 030029
FFSEPZ

Flash Flood Statement
National Weather Service El Paso Tx/Santa Teresa NM
629 PM MDT Thu Sep 2 2021

NMC035-030039-
/O.EXP.KEPZ.FF.W.0087.000000T0000Z-210903T0030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Otero NM-
629 PM MDT Thu Sep 2 2021

...FLASH FLOOD WARNING WILL EXPIRE AT 630 PM MDT THIS EVENING FOR 
CENTRAL OTERO COUNTY...

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

LAT...LON 3289 10553 3293 10553 3296 10552 3296 10547
      3292 10543 3289 10545 3287 10551

$$

JD

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 1, 6:27 PM MDTAreal Flood AdvisoryEPZDoña Ana2 hr
Sep 2, 2:01 PM MDTAreal Flood AdvisoryEPZOtero3 hr
Sep 2, 2:11 PM MDTAreal Flood AdvisoryEPZOtero3 hr
Sep 2, 2:34 PM MDTSpecial Weather StatementEPZOtero26 min
Sep 2, 2:40 PM MDTAreal Flood AdvisoryEPZOtero3 hr
Sep 2, 2:56 PM MDTSpecial Weather StatementEPZOtero34 min
Sep 2, 2:58 PM MDTSpecial Weather StatementEPZ32 min
Sep 2, 3:02 PM MDTAreal Flood AdvisoryEPZOtero118 min
Sep 2, 3:04 PM MDTAreal Flood AdvisoryEPZOtero116 min
Sep 2, 3:22 PM MDTFlash Flood WarningEPZOtero3 hr
Sep 2, 3:33 PM MDTAreal Flood AdvisoryEPZOtero3 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.