Alert archive / Wyoming / Severe Thunderstorm Warnings in 2026

Severe Thunderstorm Warning 201, NWS Cheyenne, WY

July 20, 2026Goshen County, Wyoming; Sioux County, Nebraska

NWS Cheyenne, WY issued this severe thunderstorm warning at Jul 20, 2026, 6:45 PM MDT for Goshen County, Wyoming; Sioux County, Nebraska. 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: Jul 20, 2026, 6:45 PM MDT (00:45 UTC)
Expired: Jul 20, 2026, 7:19 PM MDT
In force: 34 min
Issued by: NWS Cheyenne, WY
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Sioux County, NE, Goshen County, WY

The radar

The Cheyenne radar (KCYS), 141 km from the middle of the area, began a volume at 00:44 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 Cheyenne, WY wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 20, 5:51 PM MDT, 54 minutes earlier.

Area forecast discussion, Jul 20, 5:51 PM MDT, 54 minutes before

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In the hours before

Local storm report, Jul 20, 5:53 PM MDT, 52 minutes before

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Special weather statement, Jul 20, 6:07 PM MDT, 38 minutes before

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Special weather statement, Jul 20, 6:14 PM MDT, 31 minutes before

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<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, Jul 20, 6:30 PM MDT, 15 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.
      </p>
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</body>
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The office that day

Everything else NWS Cheyenne, WY issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 20, 6:07 PM MDT	Special Weather Statement	CYS	Goshen	23 min
Jul 20, 6:30 PM MDT	Special Weather Statement	CYS	Goshen	30 min
Jul 21, 5:21 PM MDT	Special Weather Statement	CYS	Albany	24 min
Jul 20, 6:14 PM MDT	Special Weather Statement	CYS	Scotts Bluff	31 min

Nearby

Severe Thunderstorm Warnings in Wyoming, 2026 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.