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Air Quality Alert

COC013-123-001-031-059-035-005-014-069-242200-
Boulder-Weld-Adams-Denver-Jefferson-Douglas-Arapahoe-
Broomfield-Larimer-
410 PM MDT Tue Jul 23 2019

...OZONE ACTION DAY ALERT 7/23/2019 4:00:00 PM MDT UNTIL 7/24/2019
4:00:00 PM MDT...

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

WHAT...Ozone Action Day Alert.

WHERE...El Paso, Douglas, Jefferson, Denver, Arapahoe, Adams,
Broomfield, Boulder, Larimer, Weld Counties.

WHEN...7/23/2019 4:00:00 PM MDT to 7/24/2019 4:00:00 PM MDT

ADDITIONAL DETAILS...Ozone Action Day Alert is now in effect for
the Front Range Urban Corridor.  Requests to limit driving are now
in effect until at least 4 PM Wednesday, July 24, 2019.  Hot and
sunny weather will lead to concentrations of ozone in the Moderate
to Unhealthy for Sensitive Groups range on Tuesday and Wednesday.
On Tuesday, concentrations in the Unhealthy for Sensitive Groups
category are most likely for locations in the western portions of
the Colorado Front Range and the adjacent lower foothills. This
includes locations in the Denver Metro area, and areas northward
along the Front Range Urban Corridor through Boulder, Longmont,
and Fort Collins.   On Wednesday, this area will expand to include
the Colorado Springs area, in addition to the previously mentioned
locations. 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,
be reduced to lessen the impacts on neighboring air quality.
Additional air pollution in this region may directly diminish 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.

$$



Hazardous Weather Outlook

Hazardous Weather Outlook
National Weather Service Denver/Boulder CO
1111 AM MDT Tue Jul 23 2019

COZ030>051-241715-
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-
1111 AM MDT Tue Jul 23 2019

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

.DAY ONE...This Afternoon and Tonight

Scattered thunderstorms will develop across the mountains and
foothills early to mid afternoon. Widely scattered coverage should
make it into the plains by mid to later afternoon. The eastern
half of the plains shouldn`t see any storms. The storms will
produce brief heavy rain with wind gusts as high as 50 mph. Small
hail and frequent lightning are possible as well.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday

Scattered afternoon and evening thunderstorms are expected each
day through the end of the week and into the weekend. The
stronger storms that develop over the foothills, the adjacent
plains and the Palmer Divide will be capable of producing locally
heavy rainfall and small hail each day. Thursday may be an
afternoon that sees the heaviest rain shower activity.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected to be needed today or tonight.

$$



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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