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Hazardous Weather Outlook

Hazardous Weather Outlook
National Weather Service Denver/Boulder CO
548 AM MDT Mon Aug 19 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-
548 AM MDT Mon Aug 19 2019

This hazardous weather outlook is for northeast and north central

.DAY ONE...Today and Tonight

Near record high temperatures are expected today along with very
low humidity. Over the mountains it will also become breezy in
the afternoon leading to very high fire danger.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday

There will be a chance of thunderstorms late Tuesday afternoon
through Tuesday night mainly across the plains, following the
passage of a cold front. The storms will be slow moving and will
produce heavy rainfall in some areas.

On Wednesday there will be a good chance of thunderstorms over the
area. Once again the storms will be slow moving and will produce
heavy rainfall, in some areas, especially from the foothills
across the plains.

For Thursday and Friday there will still be a chance of afternoon
and evening thunderstorms.


Spotter activation will not be needed today or tonight.



Air Quality Alert

410 PM MDT Sun Aug 18 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 Sunday August 18 to 400 PM Monday August 19

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. Monday, August 19, 2019.  Upslope
flow Sunday afternoon, and, warm temperatures and upslope flow on
Monday are expected to lead to ozone concentration in the
Unhealthy for Senstive Groups category both days. 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.


U.S. Dept. of Commerce
NOAA National Weather Service
1325 East West Highway
Silver Spring, MD 20910
Page last modified: May 16, 2007
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