Hazardous Weather Outlook for Arrowood, Colorado
Hazardous Weather Outlook
National Weather Service Denver/Boulder CO
1053 AM MDT Sat Jun 21 2025
COZ030>051-221700-
Jackson County Below 9000 Feet-
West Jackson and West Grand Counties Above 9000 Feet-
Grand and Summit Counties Below 9000 Feet-
South and East Jackson/Larimer/North and Northeast Grand/
Northwest Boulder Counties Above 9000 Feet-
South and Southeast Grand/West Central and Southwest Boulder/
Gilpin/Clear Creek/Summit/North and West Park Counties Above
9000 Feet-Larimer and Boulder Counties Between 6000 and 9000 Feet-
Jefferson and West Douglas Counties Above 6000 Feet/Gilpin/Clear
Creek/Northeast Park Counties Below 9000 Feet-
Central and Southeast Park County-
Larimer County Below 6000 Feet/Northwest Weld County-
Boulder And Jefferson Counties Below 6000 Feet/West Broomfield
County-
North Douglas County Below 6000 Feet/Denver/West Adams and
Arapahoe Counties/East Broomfield County-
Elbert/Central and East Douglas Counties Above 6000 Feet-
Northeast Weld County-Central and South Weld County-Morgan County-
Central and East Adams and Arapahoe Counties-
North and Northeast Elbert County Below 6000 Feet/North Lincoln
County-
Southeast Elbert County Below 6000 Feet/South Lincoln County-
Logan County-Washington County-Sedgwick County-Phillips County-
1053 AM MDT Sat Jun 21 2025
...HEAT ADVISORY REMAINS IN EFFECT THROUGH TO 6 PM MDT THIS
EVENING...
This hazardous weather outlook is for northeast and north central
Colorado.
.DAY ONE...Today and Tonight
Hot temperatures can be expected again today across the forecast
area with some low 100s over the plains. The heat advisory remains
in effect for the plains until 6:00 PM MDT. A Red Flag Warning is
also in effect for Park County through 9:00 PM MDT this evening
for critical fire weather conditions.
As a precaution, drink plenty of fluids, stay in an air-conditioned
room, stay out of the sun, wear lightweight and loose fitting
clothing, limit strenuous activities to early morning or late
evening and take action when you see symptoms of heat exhaustion
and heat stroke.
.DAYS TWO THROUGH SEVEN...Sunday through Friday
Sunday`s high temperatures will be above seasonal normals, but
not as hot as today. A cold front is expected Sunday evening for
the forecast area. From Monday through Wednesday there will be
good chances of late day showers and thunderstorms along with
temperatures at or below seasonal normals. Thursday and Friday
look to warm up and dry out a bit.
.SPOTTER INFORMATION STATEMENT...
Spotter activation will not be needed today and tonight, but
reports of any hail or gusty winds will be appreciated.
Air Quality Alert for Arrowood, Colorado
COC005-001-014-013-069-123-059-035-031-220600-
Arapahoe-Adams-Broomfield-Boulder-Larimer-Weld-Jefferson-
Douglas-Denver-
410 PM MDT Sat Jun 21 2025
...OZONE ACTION DAY ALERT FROM 400 PM SATURDAY UNTIL 1200 AM
SUNDAY...
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 Saturday June 21 to 1200 AM Sunday June 22
IMPACTS...Ozone Action Day Alert is now in effect for the Front
Range Urban Corridor. Hot and stagnant weather conditions will
result in ozone concentrations reaching the Unhealthy for
Sensitive Groups category Saturday afternoon and evening. These
elevated ozone readings will be most likely for northern parts of
the Denver metro area, northward to including Boulder, Ft.
Collins, Greeley, and the foothills to the west of these
locations. Improving, lower ozone levels are expected on Sunday.
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 midnight, Saturday
night, June 21, 2025. 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.