[ADEQ Forecasts] ADEQ AIR QUALITY FORECAST FOR THURSDAY, MAY 28, 2009

[forecasts@lists.azdeq.gov]

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

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

Health message for Wednesday, May 27: Unusually sensitive people should
consider reducing prolonged or heavy outdoor exertion outdoors. 

Health message for Thursday, May 28: Unusually sensitive people should
consider reducing prolonged or heavy outdoor exertion outdoors. 
 
Synopsis and Discussion
TODAY'S OZONE HEALTH WATCH HAS BEEN EXTENDED THRU THURSDAY MAY 28
Local hourly ozone concentrations were ramping up slowly but surely
Wednesday morning with several sites at or above 50 parts per billion at
10:00 a.m.  A rather weak wind regime is becoming established over the
local forecast area and an easterly component at some levels is still
being advertised by forecast models to occur over the next few days - a
situation that tends to promote higher ozone accumulation. Although it
is unlikely that unhealthy levels will be reached, some locations east
of the main metro area may reach the upper moderate range of the Air
Quality Index today thru Friday. As a result, the existing Ozone Health
Watch has been extended thru at least Thursday. -Reith   

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