Alert archive / Colorado / Severe Thunderstorm Warnings in 2026

Severe Thunderstorm Warning 237, NWS Denver/Boulder, CO

July 8, 2026Adams County, Arapahoe County, Colorado

NWS Denver/Boulder, CO issued this severe thunderstorm warning at Jul 8, 2026, 5:17 PM MDT for Adams County, Arapahoe County, Colorado. It was in force for 43 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 8, 2026, 5:17 PM MDT (23:17 UTC)
Expired: Jul 8, 2026, 6:00 PM MDT
In force: 43 min
Issued by: NWS Denver/Boulder, CO
Area: Storm-based polygon
Tornado: Possible
Damage threat: Considerable
Hail: 1.0 in
Wind: 70.0 mph

Counties Adams County, CO, Arapahoe County, CO

The radar

The Denver radar (KFTG), 18 km from the middle of the area, began a volume at 23:21 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 Denver/Boulder, CO wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 8, 12:30 PM MDT, 4 hours 47 minutes earlier.

Area forecast discussion, Jul 8, 12:30 PM MDT, 4 hours 47 minutes before

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In the hours before

Special weather statement, Jul 8, 3:51 PM MDT, 1 hour 26 minutes before

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Special weather statement, Jul 8, 4:00 PM MDT, 1 hour 17 minutes before

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Special weather statement, Jul 8, 4:01 PM MDT, 1 hour 16 minutes before

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Special weather statement, Jul 8, 4:09 PM MDT, 1 hour 8 minutes before

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Special weather statement, Jul 8, 4:11 PM MDT, 1 hour 6 minutes before

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      <p id="message2">
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Local storm report, Jul 8, 4:53 PM MDT, 24 minutes before

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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 Denver/Boulder, CO issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 7, 7:39 PM MDT	Special Weather Statement	BOU	Lincoln	51 min
Jul 8, 2:31 PM MDT	Special Weather Statement	BOU	Arapahoe	29 min
Jul 8, 3:08 PM MDT	Special Weather Statement	BOU	Arapahoe, Elbert	37 min
Jul 8, 3:26 PM MDT	Special Weather Statement	BOU	Lincoln	49 min
Jul 8, 3:51 PM MDT	Special Weather Statement	BOU	Broomfield	39 min
Jul 8, 4:00 PM MDT	Special Weather Statement	BOU	Weld	30 min
Jul 8, 4:01 PM MDT	Special Weather Statement	BOU	Weld	29 min
Jul 8, 4:09 PM MDT	Special Weather Statement	BOU	Broomfield	36 min
Jul 8, 4:11 PM MDT	Special Weather Statement	BOU	Denver	49 min
Jul 8, 4:13 PM MDT	Severe Thunderstorm Warning	BOU	Morgan, Weld	32 min
Jul 8, 4:42 PM MDT	Severe Thunderstorm Warning	BOU	Weld	33 min
Jul 8, 4:56 PM MDT	Severe Thunderstorm Warning	BOU	Adams, Arapahoe	34 min
Jul 8, 5:18 PM MDT	Severe Thunderstorm Warning	BOU	Logan, Weld	42 min
Jul 8, 5:56 PM MDT	Severe Thunderstorm Warning	BOU	Logan	27 min

Nearby

Severe Thunderstorm Warnings in Colorado, 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.