Alert archive / California / Severe Thunderstorm Warnings in 2026

Severe Thunderstorm Warning 64, NWS Phoenix, AZ

August 12, 2026Imperial County, California

NWS Phoenix, AZ issued this severe thunderstorm warning at Aug 12, 2026, 4:26 PM PDT for Imperial County, California. It was in force for 49 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 12, 2026, 4:26 PM PDT (23:26 UTC)
Expired: Aug 12, 2026, 5:15 PM PDT
In force: 49 min
Issued by: NWS Phoenix, AZ
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

County Imperial County, CA

The radar

The Yuma radar (KYUX), 90 km from the middle of the area, began a volume at 23:27 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 severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Phoenix, AZ wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 12, 1:24 PM PDT, 3 hours 2 minutes earlier.

Area forecast discussion, Aug 12, 1:24 PM PDT, 3 hours 2 minutes before

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      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
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        The site you requested is temporarily down for maintenance or an unexpected outage.
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        Please try again in a few minutes.
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      <p class="small" id="detail">
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In the hours before

Special weather statement, Aug 12, 12:16 PM PDT, 4 hours 10 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>

Special weather statement, Aug 12, 1:21 PM PDT, 3 hours 5 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 Phoenix, AZ issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 11, 6:44 PM PDT	Special Weather Statement	PSR	Yuma	31 min
Aug 12, 1:01 AM PDT	Flood Watch	PSR	Gila, Maricopa, Pinal	23 hr
Aug 12, 12:16 PM PDT	Special Weather Statement	PSR	La Paz	44 min
Aug 12, 12:18 PM PDT	Severe Thunderstorm Warning	PSR	La Paz	57 min
Aug 12, 1:21 PM PDT	Special Weather Statement	PSR	La Paz	39 min
Aug 11, 5:19 PM PDT	Special Weather Statement	PSR	Riverside	26 min
Aug 12, 3:47 PM PDT	Severe Thunderstorm Warning Considerable damage threat	PSR	Imperial	43 min
Aug 12, 4:01 PM PDT	Flash Flood Warning Considerable damage threat	PSR	Imperial	3 hr
Aug 12, 4:31 PM PDT	Dust Storm Warning	PSR	Imperial	59 min
Aug 12, 4:35 PM PDT	Flash Flood Warning Considerable damage threat	PSR	Imperial	3 hr
Aug 12, 4:58 PM PDT	Severe Thunderstorm Warning	PSR	Imperial	47 min

Nearby

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; radar from the NEXRAD Level II archive.