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Air Quality Alert


WYC035-220300-

AIR QUALITY ALERT MESSAGE
WYOMING DEPARTMENT OF ENVIRONMENTAL QUALITY
RELAYED BY THE NATIONAL WEATHER SERVICE RIVERTON WY
1212 PM MDT Wed Mar 20 2019

...Ozone Action Day in Effect for Wednesday March 20th and
Thursday March 21st, 2019, 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
Wednesday March 20th and Thursday March 21st, 2019, 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.

$$

U.S. Dept. of Commerce
NOAA National Weather Service
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Silver Spring, MD 20910
E-mail: w-nws.webmaster@noaa.gov
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