Upper Green River Basin Foothills Severe Watches & Warnings NOAA Weather Radio

Watches & Warnings

Air Quality Alert
Issued: 2:19 PM MDT Mar. 19, 2019 – National Weather Service

... Ozone action day in effect for Wednesday, March 20, 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 20, 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.


219 PM MDT Tue Mar 19 2019

... Ozone action day in effect for Wednesday, March 20, 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 20, 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.



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