Alert archive / Wyoming / Severe Thunderstorm Warnings in 2026

Severe Thunderstorm Warning 277, NWS Cheyenne, WY

August 22, 2026Albany County, Converse County, Platte County, Wyoming

NWS Cheyenne, WY issued this severe thunderstorm warning at Aug 22, 2026, 4:40 PM MDT for Albany County, Converse County, Platte County, Wyoming. It was in force for 35 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 22, 2026, 4:40 PM MDT (22:40 UTC)
Expired: Aug 22, 2026, 5:15 PM MDT
In force: 35 min
Issued by: NWS Cheyenne, WY
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Albany County, WY, Converse County, WY, Platte County, WY

The radar

The Cheyenne radar (KCYS), 132 km from the middle of the area, began a volume at 22:40 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 Cheyenne, WY wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 22, 2:52 PM MDT, 1 hour 48 minutes earlier.

Area forecast discussion, Aug 22, 2:52 PM MDT, 1 hour 48 minutes before

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In the hours before

Local storm report, Aug 22, 3:17 PM MDT, 1 hour 23 minutes before

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Special weather statement, Aug 22, 3:17 PM MDT, 1 hour 23 minutes before

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Special weather statement, Aug 22, 3:42 PM MDT, 58 minutes before

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Local storm report, Aug 22, 4:03 PM MDT, 37 minutes before

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Special weather statement, Aug 22, 4:25 PM MDT, 15 minutes before

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      <p id="message2">
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Special weather statement, Aug 22, 4:30 PM MDT, 10 minutes before

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<body>
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      <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.
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      <p id="message2">
        Please try again in a few minutes.
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      <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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The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 21, 6:22 PM MDT	Special Weather Statement	CYS	Laramie	23 min
Aug 21, 6:40 PM MDT	Special Weather Statement	CYS	Goshen	50 min
Aug 21, 6:58 PM MDT	Severe Thunderstorm Warning	CYS	Goshen	47 min
Aug 21, 7:41 PM MDT	Severe Thunderstorm Warning	CYS	Goshen	49 min
Aug 22, 1:19 PM MDT	Special Weather Statement	CYS	Albany	26 min
Aug 22, 1:49 PM MDT	Severe Thunderstorm Warning	CYS	Albany, Laramie	41 min
Aug 22, 2:27 PM MDT	Special Weather Statement	CYS	Albany	33 min
Aug 22, 2:30 PM MDT	Flash Flood Warning	CYS	Albany	3 hr
Aug 22, 2:50 PM MDT	Special Weather Statement	CYS	Albany	25 min
Aug 22, 3:17 PM MDT	Special Weather Statement	CYS	Albany	28 min
Aug 22, 3:42 PM MDT	Special Weather Statement	CYS	Albany	33 min
Aug 22, 4:03 PM MDT	Severe Thunderstorm Warning	CYS	Albany, Platte	27 min
Aug 22, 4:25 PM MDT	Special Weather Statement	CYS	Platte	35 min
Aug 22, 4:30 PM MDT	Special Weather Statement	CYS	Platte	30 min
Aug 22, 4:57 PM MDT	Severe Thunderstorm Warning	CYS	Albany, Converse, Goshen, Niobrara, Platte	48 min
Aug 22, 5:02 PM MDT	Special Weather Statement	CYS	Platte	28 min
Aug 22, 5:33 PM MDT	Special Weather Statement	CYS		27 min
Aug 22, 5:37 PM MDT	Severe Thunderstorm Warning	CYS	Converse, Niobrara, Platte	38 min
Aug 22, 5:55 PM MDT	Special Weather Statement	CYS	Laramie	35 min
Aug 21, 6:15 PM MDT	Special Weather Statement	CYS	Box Butte	45 min
Aug 21, 6:33 PM MDT	Severe Thunderstorm Warning	CYS	Box Butte, Morrill, Scotts Bluff	42 min
Aug 21, 7:05 PM MDT	Severe Thunderstorm Warning	CYS	Banner, Morrill, Scotts Bluff	55 min
Aug 21, 7:34 PM MDT	Severe Thunderstorm Warning Destructive damage threat	CYS	Cheyenne, Morrill	41 min
Aug 21, 7:51 PM MDT	Tornado Warning	CYS	Banner, Cheyenne, Kimball, Morrill	39 min
Aug 21, 8:11 PM MDT	Severe Thunderstorm Warning Destructive damage threat	CYS	Banner, Cheyenne, Kimball, Morrill	49 min
Aug 21, 8:19 PM MDT	Tornado Warning	CYS	Cheyenne, Kimball	41 min
Aug 21, 8:26 PM MDT	Severe Thunderstorm Warning	CYS	Box Butte, Morrill, Scotts Bluff, Sioux	49 min
Aug 21, 8:37 PM MDT	Severe Thunderstorm Warning Considerable damage threat	CYS	Cheyenne, Kimball	53 min
Aug 21, 8:42 PM MDT	Areal Flood Advisory	CYS	Banner, Cheyenne, Kimball, Morrill	2 hr
Aug 21, 8:54 PM MDT	Severe Thunderstorm Warning Considerable damage threat	CYS	Cheyenne, Kimball	51 min

Nearby

Severe Thunderstorm Warnings in Wyoming, 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.