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Air Quality Alert


COC013-123-001-031-059-035-005-014-069-042200-
Boulder-Weld-Adams-Denver-Jefferson-Douglas-Arapahoe-
Broomfield-Larimer-
410 PM MDT Tue Aug 3 2021

...OZONE ACTION DAY ALERT FROM 400 PM TUESDAY UNTIL 400 PM
WEDNESDAY...

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 Tuesday August 03 to 400 PM Wednesday August 04

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. Wednesday, August 4, 2021.  Although ozone will generally be
at moderate levels on Tuesday, higher ozone concentrations are
expected Wednesday afternoon and early evening. Ozone
concentrations in the Unhealthy for Sensitive Groups category will
be most likely Wednesday afternoon and early evening for southern
and western portions 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:
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.

$$

WYZ001>018-020-023>026-041930-
Yellowstone National Park-Absaroka Mountains-Cody Foothills-
North Big Horn Basin-Southwest Big Horn Basin-
Southeast Big Horn Basin-Owl Creek and Bridger Mountains-
Bighorn Mountains West-Bighorn Mountains Southeast-
Northeast Johnson County-Southeast Johnson County-
Teton and Gros Ventre Mountains-Jackson Hole-
Wind River Mountains West-Wind River Mountains East-
Upper Wind River Basin-Wind River Basin-Lander Foothills-
Natrona County Lower Elevations-Star Valley-
Salt River and Wyoming Ranges-Upper Green River Basin Foothills-
Upper Green River Basin-
Including the cities of Lake, Mammoth, Old Faithful, Clark, Cody,
Meeteetse, Basin, Greybull, Lovell, Powell, Shell, Thermopolis,
Ten Sleep, Worland, Buffalo, Kaycee, Jackson, Dubois, Riverton,
Shoshoni, Lander, Casper, Afton, Alpine, Star Valley Ranch, Thayne,
Pinedale, La Barge, Big Piney, and Farson
118 PM MDT Tue Aug 3 2021

...AIR QUALITY ALERT IN EFFECT UNTIL 1 PM MDT WEDNESDAY...

The following message is transmitted on behalf of the Wyoming
Department of Environmental Quality, Air Quality Division, and the
Wyoming Department of Health.

* WHAT...Air Quality Alert for Wildfire Smoke.

* WHERE...Northern, Western and Central Wyoming.

* WHEN...Until 1 PM MDT Wednesday, August 4.

* IMPACTS...Smoke from wildfires continues to be observed across
  portions of northern and central Wyoming. The smoke is limiting
  visibilities at times and creating poor air quality.

HEALTH INFORMATION...The Wyoming Department of Health recommends
that the elderly, young children, and individuals with respiratory
problems avoid excessive physical exertion and minimize outdoor
activities during this time. Wildfire smoke is made up of a variety
of pollutants, including particulate matter and ozone, which can
cause respiratory health effects. Although these people are most
susceptible to health impacts, the Department of Health also advises
that everyone should avoid prolonged exposure to poor air quality
conditions.

CURRENT CONDITIONS...The Wyoming Department of Environmental
Quality, Air Quality Division offers near real-time air quality data
for Wyoming`s monitoring stations and health effects information to
help the public interpret current conditions. Current air quality
conditions across the state of Wyoming can be found at
http://www.wyvisnet.com/.

$$

Vorst

WYZ101-102-041900-
Converse County Lower Elevations-Niobrara County-
Including the cities of Douglas, Glenrock, Bill, Deer Creek, Lusk,
and Redbird
1145 AM MDT Tue Aug 3 2021

...AIR QUALITY ALERT IN EFFECT UNTIL 1 PM MDT WEDNESDAY...

The following message is transmitted on behalf of the Wyoming
Department of Environmental Quality, Air Quality Division and the
Wyoming Department of Health.

WHAT...Air Quality Alert for Wildfire Smoke.

WHERE...East-Central Wyoming including Douglas and Lusk.

WHEN...Until 1 PM MDT Wednesday.

IMPACTS...Heavy smoke from Montana and Pacific Northwest wildfires
may cause poor air quality.

HEALTH INFORMATION...The Wyoming Department of Health recommends the
elderly, young children, and individuals with respiratory problems
avoid excessive physical exertion and minimize outdoor activities
during this time. Wildfire smoke is made up of a variety of
pollutants, including particulate matter and ozone, which can cause
respiratory health effect. Although these people are most
susceptible to health impacts, the Department of Health also advises
that everyone should avoid prolonged exposure to poor air quality
conditions.

CURRENT CONDITIONS...The Wyoming Department of Environmental
Quality, Air Quality Division offers near real-time air quality data
for Wyoming`s monitoring stations and health effects information to
help the public interpret current conditions. Current air quality
conditions across the state of Wyoming can be found at
http://www.wyvisnet.com/

$$

WYZ054>058-071-041730-
Northern Campbell-Southern Campbell-Western Crook-
Wyoming Black Hills-Weston-Northeastern Crook-
Including the cities of Gillette, Wright, Moorcroft, Hulett,
Sundance, Aladdin, Beulah, Four Corners, Newcastle, Upton,
and Colony
1125 AM MDT Tue Aug 3 2021

...THE WYOMING AIR QUALITY DIVISION CONTINUES THE AIR QUALITY ALERT
FOR WILDFIRE SMOKE UNTIL 1 PM MDT WEDNESDAY...

The following message is transmitted in collaboration with the
Wyoming Department of Environmental Quality, Air Quality Division,
and the Wyoming Department of Health.

* WHAT...Air Quality Alert for Wildfire Smoke.

* WHERE...Northeast Wyoming.

* WHEN...Until 1 PM MDT Wednesday.

* IMPACTS...Thick smoke from western wildfires will continue over
  northeast Wyoming.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

The Wyoming Department of Health recommends the elderly, young
children, and individuals with respiratory problems avoid excessive
physical exertion and minimize outdoor activities during this time.
Wildfire smoke is made up of a variety of pollutants, including
particulate matter and ozone, which can cause respiratory health
effect. Although these people are most susceptible to health
impacts, the Department of Health also advises that everyone should
avoid prolonged exposure to poor air quality conditions.

&&

The Wyoming Department of Environmental Quality, Air Quality
Division offers near real-time air quality data for Wyoming`s
monitoring stations and health effects information to help the
public interpret current conditions. Current air quality conditions
across the state of Wyoming can be found at http://www.wyvisnet.com/

$$


Hazardous Weather Outlook


Hazardous Weather Outlook
National Weather Service Rapid City SD
545 AM MDT Wed Aug 4 2021

SDZ001-012-024>029-072-074-051300-
Harding-Butte-Northern Black Hills-Northern Foot Hills-Rapid City-
Southern Foot Hills-Central Black Hills-Southern Black Hills-
Sturgis/Piedmont Foot Hills-Hermosa Foot Hills-
545 AM MDT Wed Aug 4 2021

This Hazardous Weather Outlook is for portions of northwestern
South Dakota...southwestern South Dakota...and the Black Hills of
South Dakota.

.DAY ONE...Today and Tonight

Isolated showers and thunderstorms are possible today. Severe storms
are not expected.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday

Scattered thunderstorms are expected Friday afternoon and evening.
Some of the storms will be capable of marginally severe wind or
hail.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed today.

&&

Stay tuned to NOAA weather radio for further updates...or check
our web site at weather.gov/rapidcity

$$

Hazardous Weather Outlook
National Weather Service Rapid City SD
545 AM MDT Wed Aug 4 2021

SDZ002-013-014-030>032-041>044-046-047-049-073-051300-
Perkins-Northern Meade Co Plains-Ziebach-Custer Co Plains-
Pennington Co Plains-Haakon-Fall River-Oglala Lakota-Jackson-
Bennett-Mellette-Todd-Tripp-Southern Meade Co Plains-
545 AM MDT Wed Aug 4 2021 /645 AM CDT Wed Aug 4 2021/

This Hazardous Weather Outlook is for portions of western South
Dakota.

.DAY ONE...Today and Tonight

Isolated to scattered showers and thunderstorms are possible today.
Severe storms are not expected.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday

Scattered thunderstorms are expected Friday evening. A strong storm
or two is possible, but widespread severe weather is not expected.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed today.

&&

Stay tuned to NOAA weather radio for further updates...or check
our web site at weather.gov/rapidcity

$$

Hazardous Weather Outlook
National Weather Service Rapid City SD
545 AM MDT Wed Aug 4 2021

WYZ054>058-071-051300-
Northern Campbell-Southern Campbell-Western Crook-
Wyoming Black Hills-Weston-Northeastern Crook-
545 AM MDT Wed Aug 4 2021

This Hazardous Weather Outlook is for portions of northeast
Wyoming...and the Black Hills of Wyoming.

.DAY ONE...Today and Tonight

Areas of smoke from western wildfires will continue. See the latest
air quality alert for details.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday

Scattered thunderstorms are expected Friday afternoon and evening.
Some of the storms will be capable of marginally severe wind or
hail. Additionally, smoky conditions will persist across the area at
times for the next week.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed today.

&&

Stay tuned to NOAA weather radio for further updates...or check
our web site at weather.gov/rapidcity

$$

Hazardous Weather Outlook
National Weather Service Denver/Boulder CO
410 AM MDT Wed Aug 4 2021

COZ030>051-051015-
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-
410 AM MDT Wed Aug 4 2021

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

.DAY ONE...Today and Tonight

A few afternoon thunderstorms are likely in the high country,
especially along and south of I-70. The Palmer Divide could also
see a few thunderstorms into the early evening hours. The main
threats would be lightning and brief heavy rain.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday

A warming and drying trend is expected to begin by Thursday.
Isolated to scattered storms are possible Friday with better
chances over the higher terrain. Friday and Saturday, there is
potential for increased winds over the higher elevations. Chances
for scattered showers/thunderstorms return early next week.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed today or tonight, but
rainfall reports would be greatly appreciated.

$$

Hazardous Weather Outlook
National Weather Service Cheyenne WY
341 AM MDT Wed Aug 4 2021

WYZ101>119-050945-
Converse County Lower Elevations-Niobrara County-
North Laramie Range-Ferris/Seminoe/Shirley Mountains-
Shirley Basin-Central Laramie Range and Southwest Platte County-
East Platte County-Goshen County-Central Carbon County-
North Snowy Range Foothills-Southwest Carbon County-
Sierra Madre Range-Upper North Platte River Basin-Snowy Range-
Laramie Valley-South Laramie Range-South Laramie Range Foothills-
Central Laramie County-East Laramie County-
341 AM MDT Wed Aug 4 2021

This hazardous weather outlook is for portions of east central
Wyoming...south central Wyoming and southeast Wyoming.

.DAY ONE...TODAY AND TONIGHT

Hazy sky conditions brought on by smoke from western fires is
expected to linger across the region. Those sensitive to lessened
air quality should plan their outdoor activities accordingly.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

Warmer...drier weather and windy conditions return to southeast
Wyoming Friday and Saturday. These conditions could create critical
fire weather conditions both Friday and Saturday.

.Spotter information statement...

Spotter activation will not be needed.

$$

Hazardous Weather Outlook
National Weather Service Cheyenne WY
341 AM MDT Wed Aug 4 2021

NEZ002-003-019>021-054-055-095-096-050945-
Dawes County-Box Butte County-Scotts Bluff County-Banner County-
Morrill County-Kimball County-Cheyenne County-
Northern Sioux County-Southern Sioux County-
341 AM MDT Wed Aug 4 2021

This hazardous weather outlook is for portions of panhandle
Nebraska.

.DAY ONE...TODAY AND TONIGHT

Hazy sky conditions brought on by smoke from western fires is
expected to linger across the region. Those sensitive to lessened
air quality should plan their outdoor activities accordingly.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

The probability for widespread hazardous weather is low.

.Spotter information statement...

Spotter activation will not be needed.

$$

Hazardous Weather Outlook
National Weather Service North Platte NE
350 AM CDT Wed Aug 4 2021

NEZ004>010-022>029-035>038-056>059-069>071-094-050900-
Sheridan-Eastern Cherry-Keya Paha-Boyd-Brown-Rock-Holt-Garden-
Grant-Hooker-Thomas-Blaine-Loup-Garfield-Wheeler-Arthur-McPherson-
Logan-Custer-Deuel-Keith-Perkins-Lincoln-Chase-Hayes-Frontier-
Western Cherry-
350 AM CDT Wed Aug 4 2021 /250 AM MDT Wed Aug 4 2021/

This Hazardous Weather Outlook is for portions of western and
north central Nebraska.

.DAY ONE...TODAY AND TONIGHT.

Isolated thunderstorms are possible this afternoon and evening.
The threat of severe weather appears low at this time.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY.

Isolated thunderstorms are possible on Friday night, and again on
Monday and Tuesday nights. The threat of severe weather appears
low at this time.


.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed through tonight.

&&

Get your weather, hydrological, and climate information at
http://www.weather.gov/northplatte

$$

Hazardous Weather Outlook
National Weather Service Riverton WY
233 AM MDT Wed Aug 4 2021

WYZ001>020-022>030-050845-
Yellowstone National Park-Absaroka Mountains-Cody Foothills-
North Big Horn Basin-Southwest Big Horn Basin-
Southeast Big Horn Basin-Owl Creek and Bridger Mountains-
Bighorn Mountains West-Bighorn Mountains Southeast-
Northeast Johnson County-Southeast Johnson County-
Teton and Gros Ventre Mountains-Jackson Hole-
Wind River Mountains West-Wind River Mountains East-
Upper Wind River Basin-Wind River Basin-Lander Foothills-
Green Mountains and Rattlesnake Range-
Natrona County Lower Elevations-Casper Mountain-Star Valley-
Salt River and Wyoming Ranges-Upper Green River Basin Foothills-
Upper Green River Basin-South Lincoln County-
Rock Springs and Green River-Flaming Gorge-East Sweetwater County-
233 AM MDT Wed Aug 4 2021

This Hazardous Weather Outlook is for Western and Central
Wyoming.

.DAY ONE...Today and Tonight.

Isolated to widely scattered showers and thunderstorms over the
northern and central mountains, and adjacent lower elevations, in
the afternoon and evening.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday.

Thursday...Isolated to scattered thunderstorms possible over the
northern half of the forecast area. Elevated fire conditions over
the southern half.

Friday...Scattered afternoon and evening thunderstorms. West to
southwest winds with gusts up to 30 mph late in the morning,
increasing to 45 mph in the afternoon across the south.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

$$

U.S. Dept. of Commerce
NOAA National Weather Service
1325 East West Highway
Silver Spring, MD 20910
E-mail: w-nws.webmaster@noaa.gov
Page last modified: June 2, 2009
NATIONAL WEATHER SERVICE: for Safety, for Work, for Fun - FOR LIFE