Alert archive / Nevada / Freeze Warnings in 2018

Freeze Warning 1, NWS Las Vegas, NV

October 13, 2018Esmeralda County, Lincoln County, Nye County, Nevada; Mohave County, Arizona

NWS Las Vegas, NV issued this freeze warning at Oct 13, 2018, 1:10 AM PDT for Esmeralda County, Lincoln County, Nye County, Nevada; Mohave County, Arizona. It took effect at Oct 15, 2018, 2:00 AM PDT. It was in force for 7 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Oct 13, 2018, 1:10 AM PDT (08:10 UTC)
In effect from
Oct 15, 2018, 2:00 AM PDT
Expired
Oct 15, 2018, 9:00 AM PDT
In force
7 hr
Issued by
NWS Las Vegas, NV

Counties Mohave County, AZ, Esmeralda County, NV, Lincoln County, NV, Nye County, NV

The radar

The Las Vegas radar (KESX), 191 km from the middle of the area, began a volume at 08:09 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

Las Vegas, NV (KVEF), launched 00:00Z, 8.2 hours before the alert went out and 103 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, Las Vegas, NV at 00:00Z on 2018-10-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, Las Vegas, NV at 00:00Z on 2018-10-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 26 square meters per square second.193958Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
2376 m above ground
0-6 km bulk shear
27 kt
0-1 km storm-relative helicity
26 m²/s²
0-3 km storm-relative helicity
78 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 freeze warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Las Vegas, NV wrote its last area forecast discussion before this freeze warning went out at Oct 12, 8:55 PM PDT, 4 hours 15 minutes earlier.

Area forecast discussion, Oct 12, 8:55 PM PDT, 4 hours 15 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>

The office that day

Everything else NWS Las Vegas, NV issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Oct 13, 2:40 PM PDTWind AdvisoryVEFClark53 hr
Oct 13, 12:15 AM PDTFlash Flood WarningVEFSan Bernardino4 hr
Oct 13, 1:27 AM PDTAreal Flood AdvisoryVEFSan Bernardino3 hr
Oct 13, 2:37 AM PDTFlash Flood WatchVEFSan Bernardino12 hr
Oct 13, 2:52 AM PDTAreal Flood AdvisoryVEFSan Bernardino5 hr
Oct 13, 4:13 AM PDTAreal Flood AdvisoryVEFSan Bernardino6 hr
Oct 13, 4:26 AM PDTFlash Flood WarningVEFSan Bernardino5 hr
Oct 13, 5:46 AM PDTAreal Flood AdvisoryVEFSan Bernardino3 hr
Oct 13, 6:00 AM PDTFlash Flood WarningVEFSan Bernardino3 hr
Oct 13, 8:14 AM PDTAreal Flood AdvisoryVEFSan Bernardino3 hr
Oct 13, 9:13 AM PDTAreal Flood AdvisoryVEFMohave2 hr

Nearby

Freeze Warnings in Nevada, 2018Freeze Warnings in Arizona, 2018Freeze Warnings in California, 2018Every freeze 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.