Red Flag Warning
URGENT – FIRE WEATHER MESSAGE
National Weather Service Denver/Boulder CO
1052 AM MDT Mon Oct 5 2020

…Critical Fire Weather Conditions are occurring or about to
occur for the higher elevations of the northern mountains,
foothills, North Park and Middle Parks, and most of the
northeastern plains…

.Morning inversions are already being eroded across the lee side
of the Cheyenne Ridge in northeast Colorado, and across the
foothills of the northern mountains. Expect winds to gust to 35
mph or higher this afternoon across the northern plains and
northern mountains and foothills and mixing continues. Minimum
relative humidities should drop to around 8-12 percent across the
warned areas.

COZ215-218-060000-
/O.CON.KBOU.FW.W.0028.000000T0000Z-201006T0000Z/
Larimer and Boulder Counties Between 6000 and 9000 Feet-
South and East Jackson/Larimer/North and Northeast Grand/
Northwest Boulder Counties Above 9000 Feet-
1052 AM MDT Mon Oct 5 2020

…RED FLAG WARNING REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING
FOR WIND AND LOW RELATIVE HUMIDITY FOR THE NORTHERN FOOTHILLS AND
NORTHERN MOUNTAINS NEAR AND NORTH OF ROCKY MOUNTAIN NATIONAL
PARK…

Red Flag Warning means that critical fire weather conditions
are either occurring now….or will shortly. A combination of
strong winds…low relative humidity…and warm temperatures can
contribute to extreme fire behavior.

Air Quality Alert
COC013-123-001-031-059-035-005-014-069-052200-
Boulder-Weld-Adams-Denver-Jefferson-Douglas-Arapahoe-
Broomfield-Larimer-
910 AM MDT Mon Oct 5 2020

…ACTION DAY FOR PARTICULATES FROM 700 AM MONDAY UNTIL 400 PM
MONDAY…

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

WHAT…Action Day for Particulates.

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

WHEN…700 AM Monday October 05 to 400 PM Monday October 05

IMPACTS…Action Day for Particulates is now in effect for the
seven-county Denver-Boulder metropolitan area. Requests to limit
driving of non- ZEV vehicles (i.e., gas or diesel) are now in
effect until at least 4 PM Monday, October 5, 2020. Heavy smoke
has been observed early Monday morning in Larimer and Weld
counties due to smoke transported from the Cameron Peak wildfire
in western Larimer County, and the Mullen wildfire in Wyoming.
Fine particulate concentrations in these areas will be in the
Unhealthy for Sensitive Groups category on Monday, including the
Ft. Collin area. Smoke from the local wildfires could increase
across larger sections of the Front Range beginning Monday
afternoon. For areas included in this advisory that are not
expected to exceed 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…If smoke is thick or becomes thick in your
neighborhood you may want to remain indoors. This is especially
true for those with heart disease, respiratory illnesses, the very
young, and the elderly. Consider limiting outdoor activity when
moderate to heavy smoke is present. Consider relocating
temporarily if smoke is present indoors and is making you ill. If
visibility is less than 5 miles in smoke in your neighborhood,
smoke has reached levels that are unhealthy.

$$