Alert archive / Colorado / Severe Thunderstorm Warnings in 2025

Severe Thunderstorm Warning 93, NWS Denver/Boulder, CO

June 11, 2025Weld County, Colorado

NWS Denver/Boulder, CO issued this severe thunderstorm warning at Jun 11, 2025, 2:50 PM MDT for Weld County, Colorado. It was in force for 25 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: Jun 11, 2025, 2:50 PM MDT (20:50 UTC)
Expired: Jun 11, 2025, 3:15 PM MDT
In force: 25 min
Issued by: NWS Denver/Boulder, CO
Area: Storm-based polygon
Hail: 1.0 in
Wind: 50.0 mph

County Weld County, CO

The radar

The Cheyenne radar (KCYS), 75 km from the middle of the area, began a volume at 20:50 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 Jun 11, 2:34 PM MDT, 16 minutes earlier.

Area forecast discussion, Jun 11, 2:34 PM MDT, 16 minutes before

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Hazardous weather outlook, Jun 11, 11:03 AM MDT, 3 hours 47 minutes before

Hazardous Weather Outlook
National Weather Service Denver/Boulder CO
1103 AM MDT Wed Jun 11 2025

COZ030>051-121715-
Jackson County Below 9000 Feet-
West Jackson and West Grand Counties Above 9000 Feet-
Grand and Summit Counties Below 9000 Feet-
South and East Jackson/Larimer/North and Northeast Grand/
Northwest Boulder Counties Above 9000 Feet-
South and Southeast Grand/West Central and Southwest Boulder/
Gilpin/Clear Creek/Summit/North and West Park Counties Above
9000 Feet-Larimer and Boulder Counties Between 6000 and 9000 Feet-
Jefferson and West Douglas Counties Above 6000 Feet/Gilpin/Clear
Creek/Northeast Park Counties Below 9000 Feet-
Central and Southeast Park County-
Larimer County Below 6000 Feet/Northwest Weld County-
Boulder And Jefferson Counties Below 6000 Feet/West Broomfield
County-
North Douglas County Below 6000 Feet/Denver/West Adams and
Arapahoe Counties/East Broomfield County-
Elbert/Central and East Douglas Counties Above 6000 Feet-
Northeast Weld County-Central and South Weld County-Morgan County-
Central and East Adams and Arapahoe Counties-
North and Northeast Elbert County Below 6000 Feet/North Lincoln
County-
Southeast Elbert County Below 6000 Feet/South Lincoln County-
Logan County-Washington County-Sedgwick County-Phillips County-
1103 AM MDT Wed Jun 11 2025

This hazardous weather outlook is for northeast and north central
Colorado.

.DAY ONE...This Afternoon and Tonight

Scattered showers and thunderstorms this afternoon will bring
gusty winds, with speeds reaching up to 50 mph. Rainfall amounts
will mostly be light.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday

Scattered afternoon showers and thunderstorms are expected again
Thursday and Friday. Some stronger to severe storms will be
possible over the northeast plains Friday afternoon. For the
weekend, the chance for storms is limited to the eastern plains.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed today and tonight.

In the hours before

Special weather statement, Jun 11, 1:54 PM MDT, 56 minutes before

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Special weather statement, Jun 11, 2:26 PM MDT, 24 minutes before

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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
Jun 11, 1:54 PM MDT	Special Weather Statement	BOU	Weld	51 min
Jun 11, 2:26 PM MDT	Special Weather Statement	BOU	Weld	49 min
Jun 11, 4:16 PM MDT	Special Weather Statement	BOU	Denver	44 min
Jun 11, 4:19 PM MDT	Special Weather Statement	BOU	Morgan	41 min
Jun 11, 4:33 PM MDT	Special Weather Statement	BOU	Washington	42 min
Jun 11, 4:42 PM MDT	Special Weather Statement	BOU	Arapahoe	33 min
Jun 11, 5:46 PM MDT	Special Weather Statement	BOU	Phillips	29 min

Nearby

Severe Thunderstorm Warnings in Colorado, 2025 Every severe thunderstorm warning in 2025

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.