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Air Quality Alert

WYC035-210500-

AIR QUALITY ALERT MESSAGE
WYOMING DEPARTMENT OF ENVIRONMENTAL QUALITY
RELAYED BY THE NATIONAL WEATHER SERVICE RIVERTON WY
1239 PM MST Sun Jan 19 2020

...Ozone Action Day in Effect for Monday, January 20, 2020 for
the Upper Green River Basin Ozone Nonattainment Area...

The following message is transmitted at the request of the
Air Quality Division of the Wyoming Department of Environmental
Quality.

The Air Quality Division has issued an Ozone Action Day for
Monday, January 20, 2020 for the Upper Green River Basin Ozone
Nonattainment Area. An Ozone Action Day is issued when forecasted
weather conditions are favorable for the formation of ozone. Ozone
appears to be elevated in the basin when there is a presence of
ozone-forming precursor emissions including oxides of nitrogen and
volatile organic compounds coupled with meteorological conditions
such as strong temperature inversions, low winds, snow cover, and
sunlight.

During the winter ozone season (January-March), everyone should
take actions to reduce precursor emissions and ground-level ozone
formation.

Ozone is an air pollutant that can cause respiratory distress
especially to children, the elderly, and people with existing
respiratory conditions such as asthma. People in these sensitive
groups should limit strenuous or extended outdoor activities,
especially in the afternoon and evening.

For more information on ozone and the health effects of ozone,
please visit the websites for the Wyoming Department of
Environmental Quality at deq.wyoming.gov and the Wyoming
Department of Health at www.health.wyo.gov.

Current information on ozone levels at the Air Quality Division`s
monitoring stations at Daniel South, Pinedale, Boulder, Big
Piney, and Juel Spring can be found at www.wyvisnet.com.

$$

NM



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