Colorado Severe Severe Thunderstorm Warning | Effective 06/21/2026 20:41

Headline: 
Severe Thunderstorm Warning issued June 21 at 9:41PM MDT until June 21 at 10:00PM MDT by NWS Denver CO
Event: 
Severe Thunderstorm Warning
Urgency: 
Immediate
Effective: 
June 21, 2026 - 8:41pm
Expires: 
June 21, 2026 - 9:00pm
Description: 
At 941 PM MDT, a severe thunderstorm was located near Crisman, or 29 miles northwest of Denver, moving southeast at 15 mph. HAZARD...Quarter size hail. SOURCE...Radar indicated. IMPACT...Damage to vehicles is expected. Locations impacted include... Boulder, Jamestown, Crisman, Salina, Sunshine, Wallstreet, Summerville, Gold Hill, Eldorado Springs and Marshall.
Instruction: 
Seek shelter inside a well-built structure and stay away from windows. This storm is capable of producing large hail.
Area Description: 
Boulder, CO
Forcast Office: 
NWS Denver CO