Weather Alerts For Dacono, CO

# SUMMARY -------------------- THE NATIONAL WEATHER SERVICE HAS ISSUED SEVERE THUNDERSTORM WATCH 385 IN EFFECT UNTIL 1 AM MDT WEDNESDAY FOR THE FOLLOWING AREAS IN COLORADO THIS WATCH INCLUDES 14 COUNTIES IN EAST CENTRAL COLORADO ELBERT LINCOLN IN NORTH CENTRAL COLORADO LARIMER IN NORTHEAST COLORADO ADAMS ARAPAHOE BOULDER BROOMFIELD DENVER DOUGLAS JEFFERSON LOGAN MORGAN WASHINGTON WELD THIS INCLUDES THE CITIES OF AKRON, ARVADA, AURORA, BOULDER, BROOMFIELD, CASTLE ROCK, CENTENNIAL, DENVER, DENVER INTERNATIONAL AIRPORT, ELIZABETH, FORT COLLINS, FORT MORGAN, GREELEY, KIOWA, LAKEWOOD, LIMON, LONGMONT, LOVELAND, PARKER, STERLING, THORNTON, WESTMINSTER, AND WINDSOR. # DETAILS -------------------- ISSUED AT Tuesday, June 23, 2026 at 4:42 PM MDT ISSUED BY NATIONAL WEATHER SERVICE DENVER/BOULDER CO HEADER WATCH COUNTY NOTIFICATION FOR WATCH 385

# HEADLINE -------------------- OZONE ACTION DAY ALERT FROM 400 PM TUESDAY UNTIL 400 PM WEDNESDAY # SUMMARY -------------------- The Colorado Department of Public Health and Environment has issued the following... WHAT...Ozone Action Day Alert. # DETAILS -------------------- WHERE Douglas, Jefferson, Denver, western Arapahoe, western Adams, Broomfield, Boulder, Larimer, and Weld Counties WHEN 400 PM Tuesday June 23 to 400 PM Wednesday June 24 IMPACTS Ozone Action Day Alert is now in effect for the Front Range Urban Corridor. Hot temperatures and light winds will allow increased ozone levels on Tuesday and Wednesday. The highest concentrations of ozone are most likely in the southern and western portions of the Denver Metro area. For Colorado air quality conditions, forecasts, and advisories, visit: https://www.colorado.gov/airquality/colorado\_summary.aspx If possible, please help us reduce ozone pollution by limiting driving gas and diesel-powered vehicles until at least 4 p.m. Wednesday, June 24, 2026. Colorado is also addressing ozone pollution through state policies. For more information about health impacts and how ozone pollution forms in Colorado, visit: https://cdphe.colorado.gov/ozone- pollution-and-your-health HEALTH INFORMATION Increasing likelihood of respiratory symptoms and breathing discomfort in active children and adults and people with lung disease, such as asthma. Active children and adults, and people with lung disease, such as asthma, should reduce prolonged or heavy outdoor exertion. ISSUED AT Tuesday, June 23, 2026 at 4:10 PM MDT ISSUED BY Relayed by National Weather Service Boulder CO HEADER Air Quality Alert Message | Colorado Department of Public Health and Environment # AREAS AFFECTED -------------------- Adams, Arapahoe, Boulder, Broomfield, Denver, Douglas, Jefferson, Larimer, Weld

There is a Enhanced Severe Storm Risk for your location. Continue reading for today's outlook from the National Weather Service's Storm Prediction Center. -------------------- National Severe Storm Outlook THERE IS AN ENHANCED RISK OF SEVERE THUNDERSTORMS ACROSS EASTERN COLORADO SUMMARY Severe thunderstorms capable of producing 2+ inch diameter hail, 75+ mph gusts, and isolated tornadoes are expected from the central High Plains into parts of the southern Plains tonight. Central High Plains into the southern Plains Three primary areas of thunderstorms currently exist across the region: southeast WY, east-central CO, and the TX South Plains vicinity. The northernmost cluster across southeast WY has struggled to maintain intensity, likely due to modest convective inhibition remaining in place. Even so, given the favorable low-level moisture downstream, there is still some chance for intensification. Environmental conditions support the potential for large hail up to 2 inches in diameter and isolated severe gusts with any storms that can mature into the more favorable buoyancy downstream. Large to very large hail remains possible for at least the next several hours with the discrete, splitting storms across east-central CO. Strong outflow (greater than 50 kt) remains possible as well. Additional storm development appears likely in this area amid persistent low-level moisture advection and a strengthening low-level jet. These additional storms will have similar hazards, with large to very large hail as the primary risk. Hail from 2" to 3.5" in diameter is possible. Strong gusts could become more likely with time if cold pool amalgamation results in a forward-propagating cluster. Several supercells continue across the TX South Plains. A strengthening low-level jet and steep mid-level lapse rates will help maintain the risk for large to very large hail and severe gusts with these storms for at least the next several hours. Arklatex and vicinity Ongoing cluster moving through the Arklatex will likely continue southeastward tonight, with an attendant risk for isolated damaging gusts. Some hail is possible as well, particularly late tonight/early tomorrow with any warm-air advection storms that develop in the wake of this cluster.