Alert archive / California / Flash Flood Warnings in 2023

Flash Flood Warning 57, NWS Hanford, CA

August 20, 2023Kern County, California

NWS Hanford, CA issued this flash flood warning at Aug 20, 2023, 6:50 PM PDT for Kern County, California. It was in force for 5 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 20, 2023, 6:50 PM PDT (01:50 UTC)
Expired: Aug 21, 2023, 12:00 AM PDT
In force: 5 hr
Issued by: NWS Hanford, CA
Area: Storm-based polygon
Flood severity: None

County Kern County, CA

The radar

The Edwards AFB radar (KEYX), 110 km from the middle of the area, began a volume at 01:51 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 Hanford, CA wrote its last area forecast discussion before this flash flood warning went out at Aug 20, 1:51 PM PDT, 4 hours 59 minutes earlier.

Area forecast discussion, Aug 20, 1:51 PM PDT, 4 hours 59 minutes before

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  <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 20, 5:08 PM PDT, 1 hour 42 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>

Local storm report, Aug 20, 6:07 PM PDT, 43 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>

Local storm report, Aug 20, 6:09 PM PDT, 41 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>

Local storm report, Aug 20, 6:13 PM PDT, 37 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>

Local storm report, Aug 20, 6:19 PM PDT, 31 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>

Local storm report, Aug 20, 6:26 PM PDT, 24 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 Hanford, CA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 20, 5:00 PM PDT	Flash Flood Warning Considerable damage threat	HNX	Kern	8 hr
Aug 20, 5:19 PM PDT	Flash Flood Warning Considerable damage threat	HNX	Kern	6 hr
Aug 20, 5:26 PM PDT	Flash Flood Warning	HNX	Kern	7 hr
Aug 20, 5:29 PM PDT	Areal Flood Advisory	HNX	Tulare	6 hr
Aug 20, 5:36 PM PDT	Flash Flood Warning	HNX	Kern	6 hr
Aug 20, 5:59 PM PDT	Flash Flood Warning	HNX	Kern	5 hr
Aug 20, 6:02 PM PDT	Flash Flood Warning	HNX	Kern	6 hr
Aug 20, 6:04 PM PDT	Areal Flood Advisory	HNX	Kern	6 hr
Aug 20, 7:31 PM PDT	Areal Flood Advisory	HNX	Kern	5 hr
Aug 20, 7:53 PM PDT	Areal Flood Advisory	HNX	Tulare	4 hr
Aug 20, 8:01 PM PDT	Areal Flood Advisory	HNX	Fresno, Tulare	5 hr
Aug 20, 8:58 PM PDT	Areal Flood Advisory	HNX	Kern, Tulare	3 hr
Aug 20, 9:12 PM PDT	Flash Flood Warning Considerable damage threat	HNX	Kern	3 hr
Aug 20, 9:17 PM PDT	Areal Flood Advisory	HNX	Kern	3 hr
Aug 21, 12:16 PM PDT	Special Weather Statement	HNX	Merced	29 min
Aug 21, 12:35 PM PDT	Severe Thunderstorm Warning	HNX	Fresno, Merced	25 min
Aug 21, 12:38 PM PDT	Special Weather Statement	HNX	San Benito	37 min
Aug 21, 12:41 PM PDT	Tornado Warning	HNX	Merced	34 min
Aug 21, 12:54 PM PDT	Severe Thunderstorm Warning	HNX	Fresno	36 min
Aug 21, 1:12 PM PDT	Areal Flood Advisory	HNX	Merced	2 hr
Aug 21, 1:12 PM PDT	Tornado Warning	HNX	Merced	33 min
Aug 21, 1:22 PM PDT	Special Weather Statement	HNX	Merced	23 min
Aug 21, 1:28 PM PDT	Severe Thunderstorm Warning	HNX	Fresno, Merced	32 min
Aug 21, 1:45 PM PDT	Severe Thunderstorm Warning	HNX	Merced	30 min
Aug 21, 1:59 PM PDT	Severe Thunderstorm Warning	HNX	Fresno, Merced	34 min
Aug 21, 2:20 PM PDT	Special Weather Statement	HNX	San Benito	55 min
Aug 21, 2:23 PM PDT	Special Weather Statement	HNX	Merced	37 min
Aug 21, 2:31 PM PDT	Special Weather Statement	HNX		29 min
Aug 21, 2:33 PM PDT	Areal Flood Advisory	HNX	Fresno, Merced	117 min
Aug 21, 2:53 PM PDT	Severe Thunderstorm Warning	HNX	Kern	67 min
Aug 21, 2:56 PM PDT	Severe Thunderstorm Warning	HNX	Fresno	24 min
Aug 21, 2:57 PM PDT	Areal Flood Advisory	HNX	Kern	2 hr
Aug 21, 3:01 PM PDT	Special Weather Statement	HNX	Mariposa	29 min
Aug 21, 3:17 PM PDT	Severe Thunderstorm Warning	HNX	Kern	28 min
Aug 21, 3:27 PM PDT	Flash Flood Warning	HNX	Kern	109 min
Aug 21, 3:45 PM PDT	Severe Thunderstorm Warning	HNX	Kern	30 min

Nearby

Flash Flood Warnings in California, 2023 Every flash flood warning in 2023

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.