[ADEQ Forecasts] ADEQ Issues Air Pollution Health Watch for Wed., Aug. 13

Tue Aug 12 12:39:33 MST 2008


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Health message for Tuesday, August 12:   Unusually sensitive people
should consider reducing prolonged or heavy outdoor exertion.
Health message for Wednesday, August 13:  Unusually sensitive people
should consider reducing prolonged or heavy outdoor exertion. 

Synopsis and Discussion
Local ozone levels on Monday were at or below the mid-moderate range of
the Air Quality Index at the vast majority of monitoring sites.
However, one exceedance of the standard did occur at Queen Valley with a
near-miss at Apache Junction.  Afternoon westerly winds will continue to
send the metro ozone plume toward the east Valley where a risk of
near-to-unhealthy ozone levels will persist thru at least Thursday.  As
a result, an Ozone Health Watch has been issued for Wednesday as a
precaution for those with respiratory conditions such as asthma,
although an increase in summer monsoon-associated cloud cover may help
the situation by then.  Also, an upper level disturbance currently over
Baja may produce a surge of winds and moisture over the western deserts
tonight and Wednesday that would also help with ozone dispersion.

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