Alert archive / Colorado / Severe Thunderstorm Warnings in 2026

Severe Thunderstorm Warning 401, NWS Denver/Boulder, CO

September 20, 2026Logan County, Phillips County, Colorado

NWS Denver/Boulder, CO issued this severe thunderstorm warning at Sep 20, 2026, 12:49 PM MDT for Logan County, Phillips County, Colorado. It was in force for 41 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
Sep 20, 2026, 12:49 PM MDT (18:49 UTC)
Expired
Sep 20, 2026, 1:30 PM MDT
In force
41 min
Issued by
NWS Denver/Boulder, CO
Area
Storm-based polygon
Hail
1.25 in
Wind
50.0 mph

Counties Logan County, CO, Phillips County, CO

The radar

The Goodland radar (KGLD), 169 km from the middle of the area, began a volume at 18:51 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 office that day

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

IssuedProductOfficeCountiesLasted
Sep 19, 6:38 PM MDTSpecial Weather StatementBOUArapahoe37 min
Sep 19, 7:07 PM MDTSpecial Weather StatementBOULogan53 min
Sep 20, 1:25 PM MDTSevere Thunderstorm WarningBOUPhillips50 min
Sep 20, 2:05 PM MDTSevere Thunderstorm Warning Considerable damage threatBOUPhillips32 min
Sep 20, 2:30 PM MDTSevere Thunderstorm WarningBOULincoln45 min
Sep 20, 3:01 PM MDTSevere Thunderstorm WarningBOULincoln44 min
Sep 20, 3:41 PM MDTSevere Thunderstorm Warning Considerable damage threatBOULincoln34 min

Nearby

Severe Thunderstorm Warnings in Colorado, 2026Every 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.