[ADEQ Forecasts] ADEQ AIR QUALITY FORECAST FOR SATURDAY, OCTOBER 18, 2008

forecasts@lists.azdeq.gov
Fri Oct 17 11:42:31 MST 2008


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

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

Health message for Friday, October 17: Unusually sensitive people should
consider reducing prolonged or heavy exertion.

Health message for Saturday, October 18: Unusually sensitive people
should consider reducing prolonged or heavy exertion.

Synopsis and Discussion
   Afternoon desert temperatures will be in the mid 90s this weekend
under mostly sunny skies thanks to this area of high pressure.  There
will be a weak disturbance that pushes through the region late Sunday
into Monday, but it will do little in way of winds.  As it pushes east
of Arizona, the low pressure system will strengthen.  Lingering over
Texas and Oklahoma through the middle of next week, it may retrograde
west slightly, lowering Valley temps into the upper 80s.  Unfortunately,
no rain is expected for our forecast area through next week. 
   Visibility has dropped a bit the past could days in the Valley of the
Sun.  With very little movement of the air at the surface, particulates
have been accumulating.  However, concentrations are only in the
low-to-mid "Moderate" range.  Not much change is expected this weekend,
either.  Ozone is still hanging in the upper part of "Good" range and
should stay there through the weekend as well.  Check back on Sunday for
a look at next week's weather and resulting air quality.  Until then,
have a great weekend!  -J.Paul

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