[ADEQ Forecasts] ADEQ AIR QUALITY FORECAST FOR TUESDAY, MARCH 10, 2009

[forecasts@lists.azdeq.gov]

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

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

Health message for Monday March 09: Unusually sensitive people should
consider reducing prolonged or heavy exertion.  

Health message for Tuesday March 10: Unusually sensitive people should
consider reducing prolonged or heavy exertion. 

Synopsis and Discussion
A thick sub-tropical moisture plume ahead of an approaching upper level
trough managed to bring a few light showers to the local forecast area
after midnight.  This trough is still expected to bring gusty winds to
the Valley by late afternoon, but the potential for blowing dust has
decreased a bit. In the wake of the aforementioned trough, the main
branch of the storm track will migrate well north of Arizona leaving
behind a weak southern branch at this latitude.  A very weak upper low
is currently depicted to approach the state by Thursday; in the
meantime, relatively light winds, overnight inversion formation, and
modest warming aloft will tend to increase the local stagnation quotient
with time; even so, highest pollutant levels are not expected to exceed
the mid-moderate range of the Air Quality Index. -Reith  

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