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Hazardous Weather Outlook

Hazardous Weather Outlook
National Weather Service Denver/Boulder CO
1121 AM MDT Sun Jul 5 2020

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-
1121 AM MDT Sun Jul 5 2020

This hazardous weather outlook is for northeast and north central

.DAY ONE...This Afternoon and Tonight

Scattered showers and thunderstorms are expected to develop over
the mountains and foothills by early afternoon. They will spread
east across the plains later this afternoon into the evening.
Drier air over the area today will lessen the coverage and delay
their start by a couple hours compared to yesterday. Light to
moderate rain, lightning, and damaging winds will be the main
threats. The strongest storms will likely occur just east of the
I-25 Corridor and north of I-70, and could see outflow winds up to
65 mph.

.DAYS TWO THROUGH SEVEN...Monday through Saturday

Much of the upcoming week will feature hot temperatures and drier
conditions. Isolated to scattered storms will still be possible
Monday and Tuesday, mainly over the elevated terrain of the
mountains and Cheyenne Ridge, and also from the Palmer Divide
into the adjacent eastern plains. Those storms would be capable
of producing brief rain, gusty winds, and lightning. Temperatures
will likely reach the mid to upper 90s across the plains and I-25
Corridor each this week, with a few spots possibly reaching 100.


Spotter activation will not be needed today or tonight, but
reports of severe strength winds will be appreciated.


Air Quality Alert

410 PM MDT Sat Jul 4 2020


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 July 04 to 400 PM Sunday July 05

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, July 5, 2020. Ozone concentrations will generally be
in the Moderate category throughout the Front Range on Saturday.
However, some areas may experience ozone concentrations in the
Unhealthy for Sensitive Groups category Sunday afternoon and
evening. The best chance for these elevated ozone concentrations
will be the southern and western suburbs of the Denver metro area,
including Highlands Ranch and Golden.  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:

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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