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2 products issued by NWS for: Denver CO
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Air Quality Alert

COC013-123-001-031-059-035-005-014-069-022200-
Boulder-Weld-Adams-Denver-Jefferson-Douglas-Arapahoe-
Broomfield-Larimer-
810 AM MDT Mon Aug 2 2021

...ACTION DAY FOR MULTIPLE POLLUTANTS FROM 400 PM SUNDAY UNTIL 400
PM MONDAY...

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

WHAT...Action Day for Multiple Pollutants.

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

WHEN...400 PM Sunday August 01 to 400 PM Monday August 02

IMPACTS...Action Day for Multiple Pollutants is now in effect for
the Front Range Urban Corridor. Requests to limit driving of non-
ZEV vehicles (i.e., gas or diesel) are now in effect until at
least 4 p.m. Monday, August 2, 2021.  Concentrations of ozone and
fine particulates are expected to reach the Unhealthy for
Sensitive Groups category on both Sunday and Monday. Elevated
levels of both pollutants are possible throughout the Colorado
Front Range Region, from Fort Collins and Greeley southward
through Colorado Springs. For areas included in this advisory that
are not expected to reach the Unhealthy for Sensitive Groups (USG)
air quality designation, we request that activities, such as
driving non-ZEV vehicles (i.e., gas or diesel), be reduced to
lessen the impacts on neighboring air quality. Additional air
pollution in this region may directly worsen air quality or
contribute to precursors which may also adversely affect air
quality.  For Colorado air quality conditions, forecasts and
advisories, visit:
https://www.colorado.gov/airquality/colorado_summary.aspx

HEALTH INFORMATION...Increasing likelihood of respiratory symptoms
in sensitive individuals, aggravation of heart or lung disease and
premature mortality in people with cardiopulmonary disease and
older adults. People with heart or lung disease, older adults, and
children should reduce prolonged or heavy exertion.

$$



Hazardous Weather Outlook

Hazardous Weather Outlook
National Weather Service Denver/Boulder CO
327 AM MDT Mon Aug 2 2021

COZ030>051-030930-
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-
327 AM MDT Mon Aug 2 2021

...FLASH FLOOD WATCH IN EFFECT FROM NOON MDT TODAY THROUGH THIS
EVENING...

This hazardous weather outlook is for northeast and north central
Colorado.

.DAY ONE...Today and Tonight

Moisture is expected to increase across the north central
mountains this afternoon and evening.  This will result in an
elevated threat of flash flooding in the East Troublesome, Cameron
Peak and Williams Fork burn through this evening. The threat will
be limited in the Calwood burn area. It will be warmer with areas
of smoke expected to continue over the northeast plains, but no
thunderstorms are expected.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday

Moisture will continue over the region on Tuesday, with heavy
rainfall possible across the Foothills and Mountains. A warming
and drying trend is expected starting mid-week. Temperatures will
warm back into the 90s for the urban corridor by Thursday. This
trend will also result in decreased chances of precipitation, with
chance for afternoon showers and storms remaining over the higher
terrain Wednesday through the end of the week.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed today or tonight, but
rainfall reports would be greatly appreciated.

$$



U.S. Dept. of Commerce
NOAA National Weather Service
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Silver Spring, MD 20910
E-mail: w-nws.webmaster@noaa.gov
Page last modified: May 16, 2007
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