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Hazardous Weather Outlook

Hazardous Weather Outlook
National Weather Service Denver/Boulder CO
1141 AM MST Tue Jan 21 2020

COZ030>051-221845-
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-
1141 AM MST Tue Jan 21 2020

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

.DAY ONE...Today and Tonight

Expect periodic snow showers in the mountains through tonight with
generally light snowfall. Amounts will be in the 1 to 3 inch range
today, with similar additional snowfall for tonight. Across the
plains, it will be cloudy and mild, but dry.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday

Light snow will continue in the mountains Wednesday into Thursday
evening with minimal accumulations. The plains will be dry. The
entire forecast area will be dry Friday into Monday with an upper
level ridge in place. The next storm will move in later Monday
into mid next week with a chance of snow for all areas.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed today or tonight.

$$



Air Quality Alert

COC013-001-035-059-031-005-014-222300-
Boulder-Adams-Douglas-Jefferson-Denver-Arapahoe-Broomfield-
410 PM MST Tue Jan 21 2020

...ACTION DAY FOR PARTICULATES FROM 400 PM TUESDAY UNTIL 400 PM
WEDNESDAY...

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

WHAT...Action Day for Particulates.

WHERE...Boulder, Broomfield, Adams, Denver, Jefferson, Arapahoe,
Douglas Counties.

WHEN...400 PM Tuesday January 21 to 400 PM Wednesday January 22

ADDITIONAL DETAILS...An Action Day for Particulates is now in
effect for the seven-county Denver-Boulder metropolitan area.
Requests to limit driving are now in effect until at least 4 PM
Wednesday, January 22, 2020.  Fine particulate concentrations are
expected to reach the Unhealthy for Sensitive Groups category on
Tuesday for locations within the Denver Metro area. Fine
particulate levels are expected to improve early Wednesday morning
in Denver and return to the Moderate category. 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
in sensitive individuals, aggravation of heart or lung disease and
premature mortality in people with cardiopulmonary disease and
older adults. People with heart or lung disease, older adults, and
children should reduce prolonged or heavy exertion.

$$



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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