[ADEQ Forecasts] ADEQ Issues Air Pollution Health Watch for Mon., June 2

[forecasts@lists.azdeq.gov]

http://www.azdeq.gov/ensemble.pdf

For transportation alternatives:
http://www.valleymetro.org

Health message for Sunday, June 01:  Active children and adults, and people with lung disease such as asthma, should reduce prolonged or heavy outdoor exertion.

Health message for Monday, June 02:  Unusually sensitive people should consider reducing prolonged or heavy outdoor exertion. 
 
Synopsis and Discussion

AN OZONE HIGH POLLUTION ADVISORY REMAINS IN EFFECT TODAY JUNE 01

AN OZONE HEALTH WATCH HAS BEEN ISSUED FOR MONDAY JUNE 02

Much of Arizona – but especially the Phoenix metro area – experienced near to or unhealthy levels of ground-level ozone on Saturday; monitors at Casa Grande, Yuma, Tucson, and even Flagstaff also registered high or unhealthy ozone pollution concentrations.  The combination of desert heat, sunny skies, relatively light winds, high sun angle, and low-level winds with California ozone/precursor transporting capabilities all appeared to operate in concert to produce the highest and most widespread ozone event of the season so far.  Unfortunately, the same synoptic weather pattern is in place today and 9:00 a.m. ozone levels at some sites are already higher than 24 hours ago; thus, the High Pollution Advisory will remain in effect.  Much stronger westerly winds are predicted for Monday afternoon, so the far northeast and east Valley should be primarily at risk for unhealthy ozone levels again on Monday; an Ozone Health Watch has been issued for that day.  Persons with respiratory problems should avoid outdoor activities during the afternoon and early evening hours. -Reith    

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