Alert archive / Nevada / Severe Thunderstorm Warnings in 2026

Severe Thunderstorm Warning 35, NWS Las Vegas, NV

August 13, 2026Clark County, Nevada; San Bernardino County, California

NWS Las Vegas, NV issued this severe thunderstorm warning at Aug 13, 2026, 12:07 PM PDT for Clark County, Nevada; San Bernardino County, California. It was in force for 38 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Aug 13, 2026, 12:07 PM PDT (19:07 UTC)
Expired: Aug 13, 2026, 12:45 PM PDT
In force: 38 min
Issued by: NWS Las Vegas, NV
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties San Bernardino County, CA, Clark County, NV

The radar

The Las Vegas radar (KESX), 67 km from the middle of the area, began a volume at 19:06 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 12:00Z, 7.1 hours before the alert went out and 94 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: 307 J/kg
Mixed-layer CIN: -191 J/kg
Mixed-layer LCL: 1708 m above ground
0-6 km bulk shear: 26 kt
0-1 km storm-relative helicity: 48 m²/s²
0-3 km storm-relative helicity: 74 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm 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 severe thunderstorm warning went out at Aug 13, 10:20 AM PDT, 1 hour 47 minutes earlier.

Area forecast discussion, Aug 13, 10:20 AM PDT, 1 hour 47 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>

In the hours before

Local storm report, Aug 13, 7:06 AM PDT, 5 hours 1 minute 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>

Local storm report, Aug 13, 8:59 AM PDT, 3 hours 8 minutes before

Preliminary Local Storm Report...Corrected
National Weather Service Las Vegas NV
859 AM PDT Thu Aug 13 2026

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0215 PM     Tstm Wnd Gst     Cottonwood Cove         35.49N 114.69W
08/12/2026  M81 MPH          Clark              NV   Mesonet

            Corrects previous tstm wnd gst report from
            Cottonwood Cove. Cottonwood Cove HADS sensor
            reports peak wind of 81 MPH.

&&

MW

Local storm report, Aug 13, 9:20 AM PDT, 2 hours 47 minutes before

Preliminary Local Storm Report
National Weather Service Las Vegas NV
920 AM PDT Thu Aug 13 2026

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1021 AM     Flash Flood      6 ENE New Kingman-Butle 35.30N 113.93W
08/12/2026                   Mohave             AZ   Public

            Corrects previous flash flood report from 6
            ENE New Kingman-Butler. Images and videos
            show flash flooding along Route 66 between
            Kingman Airport and Valle Vista. Time is
            estimated based on radar.

&&

ASG

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 13, 9:36 AM PDT	Flood Watch	VEF	Esmeralda, Lincoln, Nye	34 hr
Aug 13, 12:43 PM PDT	Severe Thunderstorm Warning	VEF	Clark	47 min
Aug 13, 1:02 PM PDT	Areal Flood Advisory	VEF	Clark	21 min
Aug 13, 1:23 PM PDT	Flash Flood Warning Considerable damage threat	VEF	Clark	3 hr
Aug 13, 1:33 PM PDT	Severe Thunderstorm Warning	VEF	Clark	42 min
Aug 13, 1:36 PM PDT	Areal Flood Advisory	VEF	Esmeralda	3 hr
Aug 13, 1:48 PM PDT	Areal Flood Advisory	VEF	Clark	3 hr
Aug 13, 2:04 PM PDT	Severe Thunderstorm Warning	VEF	Clark	41 min
Aug 13, 2:34 PM PDT	Areal Flood Advisory	VEF	Clark, Lincoln	38 min
Aug 13, 2:46 PM PDT	Areal Flood Advisory	VEF	Clark	3 hr
Aug 13, 3:12 PM PDT	Flash Flood Warning Considerable damage threat	VEF	Clark, Lincoln	3 hr
Aug 13, 3:40 PM PDT	Areal Flood Advisory	VEF	Lincoln	3 hr
Aug 13, 3:57 PM PDT	Areal Flood Advisory	VEF	Nye	2 hr
Aug 12, 6:02 PM PDT	Areal Flood Advisory	VEF	San Bernardino	3 hr
Aug 12, 6:39 PM PDT	Flash Flood Warning Considerable damage threat	VEF	San Bernardino	3 hr
Aug 12, 8:04 PM PDT	Flash Flood Warning Considerable damage threat	VEF	San Bernardino	3 hr
Aug 13, 2:13 PM PDT	Areal Flood Advisory	VEF	Inyo	3 hr

Nearby

Severe Thunderstorm Warnings in Nevada, 2026 Severe Thunderstorm Warnings in California, 2026 Every severe thunderstorm warning in 2026

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.