Alert archive / New Mexico / Flash Flood Warnings in 2018

Flash Flood Warning 13, NWS El Paso, TX

July 26, 2018Sierra County, New Mexico

NWS El Paso, TX issued this flash flood warning at Jul 26, 2018, 5:49 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: Jul 26, 2018, 5:49 PM MDT (23:49 UTC)
Expired: Jul 26, 2018, 8:45 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), 111 km from the middle of the area, began a volume at 23:53 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, 11.8 hours before the alert went out and 150 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: 66 J/kg
Mixed-layer CIN: -211 J/kg
Mixed-layer LCL: 2321 m above ground
0-6 km bulk shear: 4 kt
0-1 km storm-relative helicity: -150 m²/s²
0-3 km storm-relative helicity: -94 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.0

Open this sounding in Storm Lab

The text

As transmitted.

509 
WGUS54 KEPZ 262349
FFWEPZ
NMC051-270245-
/O.NEW.KEPZ.FF.W.0013.180726T2349Z-180727T0245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service El Paso TX
549 PM MDT THU JUL 26 2018

The National Weather Service in El Paso has issued a

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

* Until 845 PM MDT.

* At 548 PM MDT, Doppler radar indicated thunderstorms producing
  heavy rain across the warned area. Up to three inches of rain have 
  already fallen with additional rainfall expected. Flash flooding 
  is expected to begin shortly.

* Some locations that will experience flooding include...
  Williamsburg...
  Palomas...
  Lower Palomas Canyon...
  and Upper Palomas Canyon.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood 
deaths occur in vehicles. If water rises in your area move to higher 
ground. 

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.

&&

LAT...LON 3311 10728 3304 10728 3311 10740 3317 10733
      3314 10729

$$

LUNDEEN

1 follow-up statement

111 
WGUS74 KEPZ 270254
FFSEPZ

Flash Flood Statement
National Weather Service El Paso TX
854 PM MDT THU JUL 26 2018

NMC051-270303-
/O.EXP.KEPZ.FF.W.0013.000000T0000Z-180727T0245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Sierra NM-
854 PM MDT THU JUL 26 2018

...THE FLASH FLOOD WARNING FOR WESTERN SIERRA COUNTY HAS EXPIRED...

The heavy rain has ended. Flooding is no longer expected to pose a 
threat. Runoff from previous heavy rain may still be impacting low 
water crossings and poorly drained areas. Please continue to heed 
any remaining road closures.

LAT...LON 3311 10728 3304 10728 3311 10740 3317 10733
      3314 10729

$$

LUNDEEN

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 26, 1:35 PM MDT	Areal Flood Advisory	EPZ	Otero	3 hr
Jul 26, 4:45 PM MDT	Areal Flood Advisory	EPZ	Grant, Sierra	3 hr
Jul 26, 4:55 PM MDT	Special Weather Statement	EPZ	Hidalgo	65 min
Jul 26, 5:07 PM MDT	Areal Flood Advisory	EPZ	Grant	3 hr
Jul 26, 5:24 PM MDT	Areal Flood Advisory	EPZ	Sierra	3 hr
Jul 26, 5:36 PM MDT	Areal Flood Advisory	EPZ	Sierra	3 hr

Nearby

Flash Flood Warnings in New Mexico, 2018 Every flash flood warning in 2018

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.