Alert archive / New Mexico / Flash Flood Warnings in 2017

Flash Flood Warning 39, NWS El Paso, TX

August 12, 2017Sierra County, New Mexico

NWS El Paso, TX issued this flash flood warning at Aug 12, 2017, 4:44 PM MDT for Sierra 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 12, 2017, 4:44 PM MDT (22:44 UTC)
Expired
Aug 12, 2017, 7:45 PM MDT
In force
3 hr
Issued by
NWS El Paso, TX
Area
Storm-based polygon
Flood severity
None

County Sierra County, NM

The radar

The Holloman AFB radar (KHDX), 142 km from the middle of the area, began a volume at 22:46 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, 10.7 hours before the alert went out and 145 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 2017-08-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 96 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 2017-08-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -125 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
96 J/kg
Mixed-layer CIN
-142 J/kg
Mixed-layer LCL
1111 m above ground
0-6 km bulk shear
20 kt
0-1 km storm-relative helicity
-125 m²/s²
0-3 km storm-relative helicity
-90 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

294 
WGUS54 KEPZ 122244
FFWEPZ
NMC051-130145-
/O.NEW.KEPZ.FF.W.0039.170812T2244Z-170813T0145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service El Paso TX
444 PM MDT SAT AUG 12 2017

The National Weather Service in El Paso has issued a

* Flash Flood Warning for...
  West central Sierra County in north central New Mexico...

* Until 745 PM MDT

* At 443 PM MDT, Doppler radar indicated thunderstorms producing
  heavy rain across the warned area. Up to three inches of rain have 
  already fallen around Kingston along Highway 152. Flash flooding 
  is expected to begin shortly. The water will be flowing down the 
  Percha Creek towards Hillsboro. 

* Some locations that will experience flooding include...
  Hillsboro...
  and Kingston.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

In hilly terrain there are hundreds of low water crossings which are
potentially dangerous in heavy rain. Do not attempt to cross flooded
roads. Find an alternate route.

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 3294 10755 3289 10754 3288 10774 3293 10775

$$

GRZYWACZ
2 follow-up statements
064 
WGUS74 KEPZ 122352
FFSEPZ

Flash Flood Statement
National Weather Service El Paso TX
552 PM MDT SAT AUG 12 2017

NMC051-130145-
/O.CON.KEPZ.FF.W.0039.000000T0000Z-170813T0145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Sierra NM-
552 PM MDT SAT AUG 12 2017

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 745 PM MDT FOR
WEST CENTRAL SIERRA COUNTY...

At 550 PM MDT, Doppler radar indicated thunderstorms producing heavy
rain across the warned area. Up to three inches of rain have already 
fallen near Kingston with additional storms trying to move into the 
basin from the northwest. Flash flooding is expected to begin 
shortly with areas along the Percha Creek from Kingston down to 
Hillsboro. 

Some locations that will experience flooding include...
Hillsboro...
and Kingston.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

In hilly terrain there are hundreds of low water crossings which are
potentially dangerous in heavy rain. Do not attempt to cross flooded
roads. Find an alternate route.

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 3294 10755 3289 10754 3288 10774 3293 10775

$$

GRZYWACZ
450 
WGUS74 KEPZ 130137
FFSEPZ

Flash Flood Statement
National Weather Service El Paso TX
737 PM MDT SAT AUG 12 2017

NMC051-130147-
/O.EXP.KEPZ.FF.W.0039.000000T0000Z-170813T0145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Sierra NM-
737 PM MDT SAT AUG 12 2017

...THE FLASH FLOOD WARNING FOR WEST CENTRAL SIERRA COUNTY WILL EXPIRE
AT 745 PM MDT...

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

LAT...LON 3294 10755 3289 10754 3288 10774 3293 10775

$$

GRZYWACZ

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 12, 12:44 AM MDTAreal Flood AdvisoryEPZGrant5 hr
Aug 12, 1:00 AM MDTAreal Flood AdvisoryEPZGrant, Sierra5 hr
Aug 12, 3:34 AM MDTAreal Flood AdvisoryEPZLuna116 min
Aug 12, 2:46 PM MDTSpecial Weather StatementEPZSierra44 min
Aug 12, 3:15 PM MDTSpecial Weather StatementEPZHidalgo45 min
Aug 12, 3:23 PM MDTSevere Thunderstorm WarningEPZSierra52 min
Aug 12, 3:36 PM MDTAreal Flood AdvisoryEPZHidalgo3 hr
Aug 12, 3:42 PM MDTAreal Flood AdvisoryEPZSierra3 hr
Aug 12, 4:32 PM MDTSpecial Weather StatementEPZHidalgo43 min
Aug 12, 5:10 PM MDTAreal Flood AdvisoryEPZGrant3 hr
Aug 12, 5:20 PM MDTSpecial Weather StatementEPZGrant40 min

Nearby

Flash Flood Warnings in New Mexico, 2017Every flash flood warning in 2017

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.