[ADEQ Forecasts] ADEQ AIR QUALITY FORECAST FOR THURSDAY, NOVEMBER 13, 2008

[forecasts@lists.azdeq.gov]

For more information, please visit our Web page:
http://www.azdeq.gov/ensemble.pdf


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

Health message for Wednesday November 12: Unusually sensitive people
should consider reducing prolonged or heavy exertion.  

Health message for Thursday November 13: Unusually sensitive people
should consider reducing prolonged or heavy exertion. 

Synopsis and Discussion
A very strong ridge aloft just off the California coast will continue to
approach Arizona the next few days.  Air mass stagnation produced by
significant warming aloft (13-15 deg F in the 5-10K' layer by Thursday
afternoon) will be offset to a degree by increasing gradient winds and
near-record daytime heating for this time of year. Even so, would expect
a mean decrease in mixing depths and dispersion the next few days and a
resulting increase in particle pollutant concentrations over those of
Tuesday and early today.  -Reith   

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