Alert archive / California / Flash Flood Warnings in 2022

Flash Flood Warning 212, NWS Las Vegas, NV

August 19, 2022San Bernardino County, California

NWS Las Vegas, NV issued this flash flood warning at Aug 19, 2022, 5:36 PM PDT for San Bernardino County, California. 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 counties it named.

The facts

Issued: Aug 19, 2022, 5:36 PM PDT (00:36 UTC)
Expired: Aug 19, 2022, 8:45 PM PDT
In force: 3 hr
Issued by: NWS Las Vegas, NV
Area: Storm-based polygon
Damage threat: Considerable
Flood severity: None

County San Bernardino County, CA

The radar

The Edwards AFB radar (KEYX), 129 km from the middle of the area, began a volume at 00:35 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.

What forecasters said that day

The local office's own words before this flash flood 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 flash flood warning went out at Aug 19, 2:05 PM PDT, 3 hours 31 minutes earlier.

Area forecast discussion, Aug 19, 2:05 PM PDT, 3 hours 31 minutes before

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In the hours before

Local storm report, Aug 19, 3:50 PM PDT, 1 hour 46 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.

Issued	Product	Office	Counties	Lasted
Aug 20, 4:52 PM PDT	Severe Thunderstorm Warning	VEF	Clark	53 min
Aug 20, 3:09 PM PDT	Flash Flood Warning Considerable damage threat	VEF	San Bernardino	3 hr
Aug 20, 3:15 PM PDT	Severe Thunderstorm Warning	VEF	San Bernardino	45 min
Aug 20, 3:47 PM PDT	Flash Flood Warning Considerable damage threat	VEF	Mohave	3 hr
Aug 20, 4:39 PM PDT	Severe Thunderstorm Warning	VEF	Mohave	51 min

Nearby

Flash Flood Warnings in California, 2022 Every flash flood warning in 2022

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive.