[ADEQ Forecasts] ADEQ Daily Air Quality Forecast - Wednesday, June 09, 2010

Tue Jun 8 12:54:22 MST 2010

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Health message for Tuesday, June 08: Unusually sensitive people should consider reducing prolonged or heavy exertion outdoors.

Health message for Wednesday, June 09: Unusually sensitive people should consider reducing prolonged or heavy exertion outdoors. 

Synopsis and Discussion
Latest streamline analysis still indicates that winds near and at the 10K' level upstream from AZ will be conducive for the transport of additional ozone and its precursors from SOCAL.  A check of that region's forecast also projects unhealthy ozone levels for today. Thus an increase in local ozone concentrations is still anticipated to occur - mainly over the far northeast and east metro area.  After today, the warm ridge aloft currently over AZ will be pushed to the east as an anomalously large trough for this time of year begins to amplify over the west coast.  As a result, afternoon surface winds due to strong daytime heating in the Phoenix metro area will be enhanced by increasing low-level gradients by Thursday.  At this time no significant blowing dust is expected.  Winds aloft will assume a more south to southwesterly component, so no further transport is expected and highest Valley ozone levels are predicted to drop back to near the good range of the Air Quality Index. -Reith

If you have any questions or comments regarding this forecast please contact:

Arizona Department of Environmental Quality
Office of Communications
1110 W. Washington St., Phoenix, AZ 85007
(602) 771-2215


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