Alert archive / Arizona / Severe Thunderstorm Warnings in 2023

Severe Thunderstorm Warning 57, NWS Flagstaff, AZ

August 21, 2023Coconino County, Arizona

NWS Flagstaff, AZ issued this severe thunderstorm warning at Aug 21, 2023, 4:41 PM MST for Coconino County, Arizona. It was in force for 34 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 21, 2023, 4:41 PM MST (23:41 UTC)
Expired: Aug 21, 2023, 5:15 PM MST
In force: 34 min
Issued by: NWS Flagstaff, AZ
Area: Storm-based polygon
Hail: 1.0 in
Wind: 50.0 mph

County Coconino County, AZ

The radar

The Flagstaff radar (KFSX), 150 km from the middle of the area, began a volume at 23:40 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 Flagstaff, AZ wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 21, 2:39 PM MST, 2 hours 2 minutes earlier.

Area forecast discussion, Aug 21, 2:39 PM MST, 2 hours 2 minutes before

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In the hours before

Special weather statement, Aug 21, 1:47 PM MST, 2 hours 54 minutes before

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Special weather statement, Aug 21, 2:52 PM MST, 1 hour 49 minutes before

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Special weather statement, Aug 21, 3:06 PM MST, 1 hour 35 minutes before

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</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.
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Special weather statement, Aug 21, 4:18 PM MST, 23 minutes before

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<head>
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  <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 Flagstaff, AZ issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 20, 6:21 PM MST	Special Weather Statement	FGZ	Gila	24 min
Aug 20, 8:31 PM MST	Special Weather Statement	FGZ		44 min
Aug 21, 1:47 PM MST	Special Weather Statement	FGZ		28 min
Aug 21, 2:52 PM MST	Special Weather Statement	FGZ	Coconino	23 min
Aug 21, 3:06 PM MST	Special Weather Statement	FGZ		24 min
Aug 21, 4:18 PM MST	Special Weather Statement	FGZ	Coconino	27 min

Nearby

Severe Thunderstorm Warnings in Arizona, 2023 Every severe thunderstorm 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.