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Air Quality Alert

410 PM MDT Fri Aug 23 2019


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...400 PM Friday August 23 to 400 PM Saturday August 24

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 p.m. Saturday, August 24, 2019.  Ozone
concentrations are expected to remain in the Good to Moderate
range on Friday. On Saturday ozone is expected to reach
concentrations that are Unhealthy for Sensitive Groups. The
highest concentrations of ozone will likely be confined to the
northwestern portions of the Denver Metro area and northward along
the foothills, including western Boulder, Longmont, and western
Fort Collins. 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,
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:

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
1129 AM MDT Fri Aug 23 2019

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
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
Southeast Elbert County Below 6000 Feet/South Lincoln County-
Logan County-Washington County-Sedgwick County-Phillips County-
1129 AM MDT Fri Aug 23 2019


This hazardous weather outlook is for northeast and north central

.DAY ONE...Today and Tonight

Scattered showers and thunderstorms will develop in the mountains
around noon today, especially along and east of the Continental
Divide. They will spread eastward onto the plains and increase in
coverage through the afternoon and evening hours. Some of the
storms could become severe, especially east of a line from Limon
to Greeley.  Expect hail over one inch in diameter, wind gusts to
60 mph and even a possible weak tornado.

Further west towards the Interstate 70 corridor and foothills,
the main threat with the storms will be strong wind gusts. The
storms will be ending from west to east during the early evening

.DAYS TWO THROUGH SEVEN...Saturday through Thursday

Saturday and Sunday will be hot and dry with elevated fire danger
especially over the mountains where it will become windy on Sunday.
Some cooling is expected for early next week with a return of
isolated thunderstorms.


Spotter activation may be needed across the northeast plains of
Colorado after 2 pm.


U.S. Dept. of Commerce
NOAA National Weather Service
1325 East West Highway
Silver Spring, MD 20910
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