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    Other Weather Alerts
Type Air Quality Alert

Air Stagnation Advisory

Issued By NWS Riverton (Western Wyoming)
Issuing Time Fri, 21 Feb 2020 13:45:00 PST
Broadcast Time Fri, 21 Feb 2020 13:45:00 PST
Valid Until Sat, 22 Feb 2020 14:00:00 PST
Brief Description Air Quality Alert
Detailed Description Ozone Action Day in Effect for Saturday, February 22nd, 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 extended the Ozone Action Day through Saturday, February 22nd, 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.
       
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