[ADEQ Forecasts] ADEQ AIR QUALITY FORECAST FOR SATURDAY, NOVEMBER 29, 2008

[forecasts@lists.azdeq.gov]

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

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

Health message for Friday November 28: No health impacts expected.

Health message for Saturday November 29: No health impacts expected.
 
Synopsis and Discussion
In the wake of the recent heavy rainfall event, a very strong ridge
aloft will approach Arizona from the west during the weekend.
Tightening low-level pressure gradients will result in periods of breezy
north to northeasterly winds by Saturday.  Under these conditions
overall good air quality should continue thru the weekend; however, due
to warming aloft and overnight inversion formation, stagnation of the
Valley air mass will likely increase by Sunday.  Then, depending on the
amount of local fireplace usage, wood smoke may result in an increase in
PM-2.5 levels in some parts of the metro area. -Reith  

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