Alert archive / Nebraska / Severe Thunderstorm Warnings in 2026

Severe Thunderstorm Warning 263, NWS Cheyenne, WY

August 21, 2026Box Butte County, Dawes County, Nebraska

NWS Cheyenne, WY issued this severe thunderstorm warning at Aug 21, 2026, 5:06 PM MDT for Box Butte County, Dawes County, Nebraska. It was in force for 54 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, 2026, 5:06 PM MDT (23:06 UTC)
Expired: Aug 21, 2026, 6:00 PM MDT
In force: 54 min
Issued by: NWS Cheyenne, WY
Area: Storm-based polygon
Damage threat: Considerable
Hail: 1.5 in
Wind: 70.0 mph

Counties Box Butte County, NE, Dawes County, NE

The radar

The Rapid City radar (KUDX), 185 km from the middle of the area, began a volume at 23:06 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Aug 21, 4:48 PM MDT	Severe Thunderstorm Watch	SPC	6 hr

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 Cheyenne, WY wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 21, 3:06 PM MDT, 2 hours earlier.

Area forecast discussion, Aug 21, 3:06 PM MDT, 2 hours 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 Cheyenne, WY issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 21, 5:48 PM MDT	Special Weather Statement	CYS	Platte	27 min
Aug 21, 4:38 PM MDT	Severe Thunderstorm Warning Considerable damage threat	CYS	Dawes	52 min
Aug 21, 5:23 PM MDT	Severe Thunderstorm Warning	CYS	Box Butte, Dawes, Sioux	52 min
Aug 21, 5:55 PM MDT	Severe Thunderstorm Warning	CYS	Box Butte, Dawes	46 min

Nearby

Severe Thunderstorm Warnings in Nebraska, 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.