[ADEQ Forecasts] ADEQ Issues High Pollution Advisory and Air Pollution Health Watch For Wednesday, May 21, 2008

[forecasts@lists.azdeq.gov]

For more information, please visit our Web page:

 

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

 

Health message for Tuesday, May 20:  Active children and adults, and
people with lung disease such as asthma, should reduce prolonged or
heavy outdoor exertion.  

 

Health message for Wednesday, May 21:  Active children and adults, and
people with lung disease such as asthma, should reduce prolonged or
heavy exertion.  

 

Synopsis and Discussion

 

AN OZONE HIGH POLLUTION ADVISORY REMAINS IN EFFECT TODAY MAY 20 A PM-10
HIGH POLLUTION ADVISORY AND AN OZONE HEALTH WATCH HAVE BEEN ISSUED FOR
WEDNESDAY MAY 21

 

Local ozone levels approached unhealthy levels at several east Valley
locations on Monday, and as of 10:00 a.m. this morning hourly
concentrations were running 10-15 parts per billion higher than 24 hours
ago at most monitoring sites; therefore, today's High Pollution Advisory
will continue thru the early evening hours.  All eyes now turn to the
significant wind/blowing dust/unhealthy PM-10 (coarse particle) event
that is looking inevitable for Wednesday. A transition from record heat
to below average temperatures will begin on Wednesday as a surface cold
front moves over the state ahead of an intense upper level trough.  A
sharp temperature contrast will be reflected in tight pressure and
contour gradients that will be capable of producing sustained winds over
30 mph and wind gusts in excess of 40 mph over a wide area, much of it
open desert.  The likelihood that widespread blowing dust will be
generated by afternoon has prompted the issuance of a PM-10 High
Pollution Advisory.  Under sunny skies and with continuing additional
ozone transport from California, local ozone levels could also be a
concern

 

 

 

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