Tornado Warning 9, NWS Denver/Boulder, CO

Issued

Jun 1, 2026, 3:02 PM MDT (21:02 UTC)

Expired

Jun 1, 2026, 3:45 PM MDT

In force

43 min

Issued by

NWS Denver/Boulder, CO

Area

Storm-based polygon

Tornado

Radar indicated

Hail

2.0 in

Counties Adams County, CO, Arapahoe County, CO

The Denver radar (KFTG), 15 km from the middle of the area, began a volume at 21:04 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.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

431 
WFUS55 KBOU 012102
TORBOU
COC001-005-012145-
/O.NEW.KBOU.TO.W.0009.260601T2102Z-260601T2145Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Denver CO
302 PM MDT Mon Jun 1 2026

The National Weather Service in Denver has issued a

* Tornado Warning for...
  South Central Adams County in northeastern Colorado...
  Central Arapahoe County in northeastern Colorado...

* Until 345 PM MDT.

* At 302 PM MDT, a severe thunderstorm capable of producing a tornado
  was located near Bennett, or 26 miles east of Denver, moving
  northeast at 15 mph.

  HAZARD...Tornado and two inch hail.

  SOURCE...Radar indicated rotation.

  IMPACT...Flying debris will be dangerous to those caught without
           shelter. Mobile homes will be damaged or destroyed. Damage
           to roofs, windows and vehicles will occur. Tree damage is
           likely.

* Locations impacted include...
  Bennett, Strasburg and Byers.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Move to an interior room on the lowest floor of a well-built building
away from windows. If you are outdoors, in a mobile home, or in a
vehicle, move to the closest substantial shelter and protect yourself
from flying debris.

&&

LAT...LON 3974 10448 3984 10431 3971 10422 3968 10444
PARTITION...508005
TIME...MOT...LOC 2101Z 245DEG 12KT 3971 10446

TORNADO...RADAR INDICATED
MAX HAIL SIZE...2.00 IN

$$

MAI

867 
WWUS55 KBOU 012125
SVSBOU

Severe Weather Statement
National Weather Service Denver CO
325 PM MDT Mon Jun 1 2026

COC001-005-012145-
/O.CON.KBOU.TO.W.0009.000000T0000Z-260601T2145Z/
Adams CO-Arapahoe CO-
325 PM MDT Mon Jun 1 2026

...TORNADO WARNING REMAINS IN EFFECT UNTIL 345 PM MDT FOR ADAMS AND
CENTRAL ARAPAHOE COUNTIES...

At 325 PM MDT, a severe thunderstorm capable of producing a tornado
was located over Strasburg, or 31 miles east of Denver, moving
northeast at 15 mph.

HAZARD...Tornado and two inch hail.

SOURCE...Radar indicated rotation.

IMPACT...Flying debris will be dangerous to those caught without
         shelter. Mobile homes will be damaged or destroyed. Damage
         to roofs, windows and vehicles will occur. Tree damage is
         likely.

Locations impacted include...
  Bennett, Strasburg and Byers.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Move to an interior room on the lowest floor of a well-built building
away from windows. If you are outdoors, in a mobile home, or in a
vehicle, move to the closest substantial shelter and protect yourself
from flying debris.

&&

LAT...LON 3974 10440 3977 10444 3984 10431 3971 10422
      3969 10434
PARTITION...508005
TIME...MOT...LOC 2102Z 245DEG 12KT 3971 10446

TORNADO...RADAR INDICATED
MAX HAIL SIZE...2.00 IN

$$

MAI

757 
WWUS55 KBOU 012141
SVSBOU

Severe Weather Statement
National Weather Service Denver CO
341 PM MDT Mon Jun 1 2026

COC001-005-012151-
/O.EXP.KBOU.TO.W.0009.000000T0000Z-260601T2145Z/
Adams CO-Arapahoe CO-
341 PM MDT Mon Jun 1 2026

...TORNADO WARNING WILL EXPIRE AT 345 PM MDT FOR ADAMS AND CENTRAL
ARAPAHOE COUNTIES...

The storm which prompted the warning has moved out of the area.
Therefore, the warning will be allowed to expire.

A Severe Thunderstorm Watch remains in effect until 800 PM MDT Monday
for a portion of northeast Colorado.

&&

LAT...LON 3974 10440 3977 10444 3984 10431 3971 10422
      3969 10434
PARTITION...508005
TIME...MOT...LOC 2125Z 245DEG 12KT 3974 10436

$$

MAI

Tornado Warnings in Colorado, 2026Every tornado warning in 2026Tornadoes in 2026

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; radar from the NEXRAD Level II archive.