Westminster, CO Weather Alerts

* WHAT...West winds 35 to 55 mph with gusts up to 90 mph expected.
Localized gusts may exceed 100 mph.

* WHERE...Rocky Mountain National Park and the Medicine Bow Range,
The Mountains of Summit County, the Mosquito Range, and the Indian
Peaks, The Northern Front Range Foothills, The Southern Front
Range Foothills, South Park, Fort Collins, and Boulder and the
western suburbs of Denver.

* WHEN...From 9 AM Saturday to noon MDT Sunday. The strongest winds
will be tonight.

* IMPACTS...Damaging winds will blow down trees and power lines.
Power outages are expected. Travel will be difficult, especially
for high profile vehicles.

* Affected Area...Fire Weather Zones 238 and 239.

* Timing...From noon today through 6 PM Sunday.

* Winds...Northwest 35 to 55 mph with gusts up to 80 mph.

* Relative Humidity...As low as 17 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.

West winds combined with very low humidity (locally into the
single digits) will continue to produce widespread critical fire
weather conditions across the lower elevations. The strongest
winds and highest fire danger will be focused across areas closest
to the foothills. There, Red Flag conditions may persist for a
prolonged period, extending through late evening as winds increase
late in the day.

On Monday, winds will be stronger, with gusts of 40-50 mph
becoming widespread for the lower elevations. Although some
moderation in humidity levels is anticipated (some warned areas
may bottom out between 15-20%), critical conditions are likely
given the substantial wind speeds.

...RED FLAG WARNING IN EFFECT FROM 9 AM TO 6 PM MST MONDAY FOR
WIND AND LOW RELATIVE HUMIDITY FOR FOR BOULDER, THE DENVER METRO,
AND THE PALMER DIVIDE...

The National Weather Service in Denver has issued a Red Flag
Warning for wind and low relative humidity, which is in effect
from 9 AM to 6 PM MST Monday. The Fire Weather Watch is no longer
in effect.

* Affected Area...Fire Weather Zones 239, 240 and 241.

* Timing...Red Flag Warning through midnight tonight and again on
Monday from 9AM to 6PM.

* Winds...West 20 to 35 mph with gusts to 50 mph this afternoon,
and up to 65 mph later this evening for the western Denver
metro. For Monday, west 30 to 40 mph with gusts as high as 55
mph.

* Relative Humidity...As low as 8 percent today, 13 percent
Monday.

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

West winds combined with very low humidity (locally into the
single digits) will continue to produce widespread critical fire
weather conditions across the lower elevations. The strongest
winds and highest fire danger will be focused across areas closest
to the foothills. There, Red Flag conditions may persist for a
prolonged period, extending through late evening as winds increase
late in the day.

On Monday, winds will be stronger, with gusts of 40-50 mph
becoming widespread for the lower elevations. Although some
moderation in humidity levels is anticipated (some warned areas
may bottom out between 15-20%), critical conditions are likely
given the substantial wind speeds.

...RED FLAG WARNING IN EFFECT FROM 9 AM TO 6 PM MST MONDAY FOR
WIND AND LOW RELATIVE HUMIDITY FOR FOR BOULDER, THE DENVER METRO,
AND THE PALMER DIVIDE...

The National Weather Service in Denver has issued a Red Flag
Warning for wind and low relative humidity, which is in effect
from 9 AM to 6 PM MST Monday. The Fire Weather Watch is no longer
in effect.

* Affected Area...Fire Weather Zones 239, 240 and 241.

* Timing...Red Flag Warning through midnight tonight and again on
Monday from 9AM to 6PM.

* Winds...West 20 to 35 mph with gusts to 50 mph this afternoon,
and up to 65 mph later this evening for the western Denver
metro. For Monday, west 30 to 40 mph with gusts as high as 55
mph.

* Relative Humidity...As low as 8 percent today, 13 percent
Monday.

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

* WHAT...Dangerously cold wind chills. Wind chills as low as 35
below zero.

* WHERE...Portions of east central, north central, and northeast
Colorado.

* WHEN...Until 11 AM MST Tuesday.

* IMPACTS...The dangerously cold wind chills could cause frostbite
on exposed skin in as little as 10 minutes.

* WHAT...Dangerously cold wind chills. Wind chills as low as 35
below zero.

* WHERE...East central and northeast Colorado.

* WHEN...Until 11 AM MST Tuesday.

* IMPACTS...The dangerously cold wind chills could cause frostbite
on exposed skin in as little as 10 minutes.

* WHAT...Dangerously cold wind chills. Wind chills as low as 40
below zero.

* WHERE...Portions of east central, north central, and northeast
Colorado.

* WHEN...Until 11 AM MST Tuesday.

* IMPACTS...The dangerously cold wind chills could cause frostbite
on exposed skin in as little as 10 minutes.

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 August 26 to 400 PM Sunday August 27

IMPACTS...Ozone Action Day Alert 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. Sunday, August 27, 2023. Although ozone concentrations will
be in the Good to Moderate range on Saturday, higher ozone levels
are expected for Sunday. On Sunday, ozone concentrations in the
Unhealthy for Sensitive Groups category are most likely for
southern and western parts of the Denver metro area, including
Highlands Ranch and Golden, during the afternoon and evening
hours. 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
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.

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 Wednesday June 28 to 1200 AM Thursday June 29

IMPACTS...Ozone Action Day Alert 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 midnight,
Wednesday night, June 28, 2023. Hot temperatures and light winds
have allowed ozone concentrations to reach the Unhealthy for
Sensitive Groups category in southern and western portions of the
Denver Metro area on Wednesday. Ozone concentrations are expected
to remain in the Good to Moderate range on Thursday. 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
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.

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 Wednesday June 07 to 400 PM Thursday June 08

IMPACTS...Ozone Action Day Alert 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. Thursday, June 8, 2023. Delayed storm development and spotty
coverage is expected to allow ozone concentrations to reach the
Unhealthy for Sensitive Groups category in western portions of the
Front Range on Wednesday and Thursday. 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
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.