Alert archive / New Mexico / Flash Flood Watches in 2018

Flash Flood Watch 2, NWS El Paso, TX

August 9, 2018Otero County, New Mexico

NWS El Paso, TX issued this flash flood watch at Aug 9, 2018, 4:13 AM MDT for Otero County, New Mexico. It took effect at Aug 9, 2018, 12:00 PM MDT. It was in force for 18 hr.

The area

The counties it named.

The facts

Issued
Aug 9, 2018, 4:13 AM MDT (10:13 UTC)
In effect from
Aug 9, 2018, 12:00 PM MDT
Expired
Aug 10, 2018, 6:00 AM MDT
In force
18 hr
Issued by
NWS El Paso, TX
Flood severity
None

County Otero County, NM

The radar

The Holloman AFB radar (KHDX), 63 km from the middle of the area, began a volume at 10:15 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 00:00Z, 10.2 hours before the alert went out and 122 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 00:00Z on 2018-08-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 194 joules per kilogram.LCLEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Santa Teresa, NM at 00:00Z on 2018-08-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -5 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
194 J/kg
Mixed-layer CIN
-15 J/kg
Mixed-layer LCL
3219 m above ground
0-6 km bulk shear
9 kt
0-1 km storm-relative helicity
-5 m²/s²
0-3 km storm-relative helicity
45 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this flash flood watch went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS El Paso, TX wrote its last area forecast discussion before this flash flood watch went out at Aug 9, 4:00 AM MDT, 13 minutes earlier.

Area forecast discussion, Aug 9, 4:00 AM MDT, 13 minutes before
<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Service Notice</title>
  <link rel="stylesheet" href="index.css">
</head>
<body>
  <main class="wrap">
    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
      <p id="message2">
        Please try again in a few minutes.
      </p>
      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>
Hazardous weather outlook, Aug 8, 11:18 AM MDT, 16 hours 55 minutes before
Hazardous Weather Outlook
National Weather Service El Paso Tx/Santa Teresa NM
1118 AM MDT Wed Aug 8 2018

NMZ401>417-TXZ418>424-091730-
Upper Gila River Valley-Southern Gila Highlands/Black Range-
Southern Gila Foothills/Mimbres Valley-
Southwest Desert/Lower Gila River Valley-Lowlands of the Bootheel-
Uplands of the Bootheel-Southwest Desert/Mimbres Basin-
Eastern Black Range Foothills-Sierra County Lakes-
Northern Dona Ana County-Southern Dona Ana County/Mesilla Valley-
Central Tularosa Basin-Southern Tularosa Basin-
West Slopes Sacramento Mountains Below 7500 Feet-
Sacramento Mountains Above 7500 Feet-
East Slopes Sacramento Mountains Below 7500 Feet-Otero Mesa-
Western El Paso County-Eastern/Central El Paso County-
Northern Hudspeth Highlands/Hueco Mountains-Salt Basin-
Southern Hudspeth Highlands-
Rio Grande Valley of Eastern El Paso/Western Hudspeth Counties-
Rio Grande Valley of Eastern Hudspeth County-
1118 AM MDT Wed Aug 8 2018

This Hazardous Weather Outlook is for portions of south central
New Mexico, southwest New Mexico, and southwest Texas.

.DAY ONE...This Afternoon and Tonight.

Increased moisture and instability this afternoon should result in
more showers and thunderstorms across the region this afternoon
and evening. Scattered coverage across the area is expected. The
primary hazard expected will be strong outflow winds of 40 to 55
mph. Next, due to slow storm motion there is also potential for a
few storms to produce heavy rain and isolated flash flooding.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday.

Additional increases in moisture, combined with passing disturbances
and dynamics aloft should lead to a period of more stormy weather
Thursday through Saturday. The primary threat will transition to
heavy rain and flash flooding across the area. Storm activity will
trend sharply downward again by Sunday as drier air moves back
over.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed; however reports of
significant weather should be immediately forwarded to local law
enforcement and the National Weather Service.

Bird

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 8, 6:57 PM MDTSpecial Weather StatementEPZGrant63 min
Aug 8, 7:21 PM MDTAreal Flood AdvisoryEPZHidalgo3 hr
Aug 8, 6:49 PM MDTSpecial Weather StatementEPZEl Paso41 min
Aug 8, 7:22 PM MDTSpecial Weather StatementEPZEl Paso38 min
Aug 9, 3:44 PM MDTSpecial Weather StatementEPZHudspeth46 min

Nearby

Flash Flood Watches in New Mexico, 2018Every flash flood watch 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.