Alert archive / Colorado / Severe Thunderstorm Warnings in 2026

Severe Thunderstorm Warning 201, NWS Denver/Boulder, CO

June 26, 2026Weld County, Colorado

NWS Denver/Boulder, CO issued this severe thunderstorm warning at Jun 26, 2026, 5:42 PM MDT for Weld County, Colorado. It was in force for 48 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 26, 2026, 5:42 PM MDT (23:42 UTC)
Expired: Jun 26, 2026, 6:30 PM MDT
In force: 48 min
Issued by: NWS Denver/Boulder, CO
Area: Storm-based polygon
Hail: 1.25 in
Wind: 60.0 mph

County Weld County, CO

The radar

The Cheyenne radar (KCYS), 75 km from the middle of the area, began a volume at 23:42 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jun 26, 2:37 PM MDT	Severe Thunderstorm Watch	SPC	9 hr

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 26, 2:28 PM MDT, 3 hours 14 minutes earlier.

Area forecast discussion, Jun 26, 2:28 PM MDT, 3 hours 14 minutes before

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In the hours before

Special weather statement, Jun 26, 1:50 PM MDT, 3 hours 52 minutes before

Special Weather Statement
National Weather Service Denver CO
150 PM MDT Fri Jun 26 2026

COZ039-040-262030-
North Douglas County Below 6000 Feet/Denver/West Adams and
Arapahoe Counties/East Broomfield County CO-Boulder And Jefferson
Counties Below 6000 Feet/West Broomfield County CO-
150 PM MDT Fri Jun 26 2026

...A STRONG THUNDERSTORM WILL IMPACT SOUTHWESTERN DENVER...WESTERN
ADAMS...SOUTHWESTERN BROOMFIELD...NORTHWESTERN ARAPAHOE AND
NORTHEASTERN JEFFERSON COUNTIES UNTIL 230 PM MDT...

At 150 PM MDT, Doppler radar was tracking a strong thunderstorm over
Arvada, or 11 miles northwest of Denver, moving east at 30 mph.

HAZARD...Wind gusts up to 40 mph and nickel size hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor damage to outdoor objects is
         possible.

Locations impacted include...
  Denver, western Aurora, Lakewood, Thornton, Arvada, Westminster,
  Commerce City, Northglenn, Brighton, Wheat Ridge, Golden, Federal
  Heights, Edgewater, Mountain View and Henderson.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Monitor the weather situation closely and be alert for threatening
weather conditions.

&&

LAT...LON 3973 10522 3977 10522 3978 10519 3979 10520
      3980 10520 3980 10522 3985 10522 3985 10521
      3987 10520 3989 10520 3996 10479 3965 10477
      3968 10519 3968 10515 3970 10514 3972 10515
TIME...MOT...LOC 1949Z 269DEG 24KT 3980 10514

MAX HAIL SIZE...0.88 IN
MAX WIND GUST...40 MPH

09

Local storm report, Jun 26, 2:05 PM MDT, 3 hours 37 minutes before

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Local storm report, Jun 26, 2:06 PM MDT, 3 hours 36 minutes before

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Local storm report, Jun 26, 3:13 PM MDT, 2 hours 29 minutes before

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Local storm report, Jun 26, 5:10 PM MDT, 32 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 25, 6:41 PM MDT	Severe Thunderstorm Warning	BOU	Weld	40 min
Jun 25, 7:15 PM MDT	Special Weather Statement	BOU	Weld	45 min
Jun 25, 7:31 PM MDT	Special Weather Statement	BOU	Adams, Broomfield	44 min
Jun 25, 9:21 PM MDT	Areal Flood Advisory	BOU	Jefferson	3 hr
Jun 26, 12:24 AM MDT	Red Flag Warning	BOU	Boulder, Clear Creek, Douglas, Gilpin, Grand, Jackson and 4 more	48 hr
Jun 26, 1:50 PM MDT	Special Weather Statement	BOU	Denver	40 min
Jun 26, 1:57 PM MDT	Severe Thunderstorm Warning	BOU	Adams, Boulder, Broomfield, Jefferson, Weld	27 min
Jun 26, 2:10 PM MDT	Severe Thunderstorm Warning	BOU	Douglas, Elbert	46 min
Jun 26, 2:28 PM MDT	Fire Weather Watch	BOU	Boulder, Clear Creek, Douglas, Gilpin, Grand, Jackson and 4 more	23 hr
Jun 26, 3:15 PM MDT	Severe Thunderstorm Warning	BOU	Elbert, Lincoln, Washington	30 min
Jun 26, 3:24 PM MDT	Severe Thunderstorm Warning	BOU	Elbert	36 min
Jun 26, 3:41 PM MDT	Severe Thunderstorm Warning	BOU	Elbert, Lincoln	25 min
Jun 26, 5:17 PM MDT	Severe Thunderstorm Warning	BOU	Weld	28 min
Jun 26, 5:39 PM MDT	Severe Thunderstorm Warning	BOU	Lincoln	36 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.