Hazard Report Provided By forecast.weather.gov

URGENT - FIRE WEATHER MESSAGE
National Weather Service Denver/Boulder CO
227 PM MDT Thu Jun 18 2026

COZ211>214-217-218-191200-
/O.CON.KBOU.FW.A.0035.260620T1800Z-260621T0300Z/
Jackson County Below 9000 Feet-
South and Southeast Grand/West Central and Southwest Boulder/
Gilpin/Clear Creek/Summit/North and West Park Counties Above
9000 Feet-Grand and Summit Counties Below 9000 Feet-
Central and Southeast Park County-
West Jackson and West Grand Counties Above 9000 Feet-
South and East Jackson/Larimer/North and Northeast Grand/
Northwest Boulder Counties Above 9000 Feet-
227 PM MDT Thu Jun 18 2026

...FIRE WEATHER WATCH REMAINS IN EFFECT FROM SATURDAY AFTERNOON
THROUGH SATURDAY EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR
THE NORTHERN MOUNTAINS AND HIGH VALLEYS OF COLORADO...

* AFFECTED AREA...Fire Weather Zones 211, 212, 213, 214, 217 and
  218.

* TIMING...From Saturday afternoon through Saturday evening.

* WINDS...West 20 to 30 mph with gusts up to 45 mph.

* RELATIVE HUMIDITY...As low as 10 percent.

* IMPACTS...Conditions will be favorable for rapid fire spread.
  Avoid outdoor burning and any activity that may produce a
  spark and start a wildfire.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Fire Weather Watch means that critical fire weather conditions
are forecast to occur. Listen for later forecasts and possible
Red Flag Warnings.

&&

$$

COC031-001-014-005-035-013-123-069-059-192200-
Denver-Adams-Broomfield-Arapahoe-Douglas-Boulder-Weld-
Larimer-Jefferson-
410 PM MDT Thu Jun 18 2026

...OZONE ACTION DAY ALERT FROM 400 PM THURSDAY UNTIL 400 PM
FRIDAY...

The Colorado Department of Public Health and Environment has
issued the following...

WHAT...Ozone Action Day Alert.

WHERE...Douglas, Jefferson, Denver, western Arapahoe, western
Adams, Broomfield, Boulder, Larimer, and Weld Counties

WHEN...400 PM Thursday June 18 to 400 PM Friday June 19

IMPACTS...Ozone Action Day Alert is now in effect for the Front
Range Urban Corridor.  However, hot and stagnant weather will
allow ozone to reach the Unhealthy for Sensitive Groups category
on Thursday and Friday.  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.
Friday, June 19, 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.

$$

Hazard Report Provided By forecast.weather.gov