[ADEQ Forecasts] ADEQ Issues High Pollution Advisory for Wed., June 6

Tue Jun 5 11:53:43 MST 2007

VERY UNHEALTHY  (201-300)

UNHEALTHY (151-200)

UNHEALTHY FOR SENSITIVE GROUPS (101-150)

MODERATE (51-100)

GOOD (0-50)

For more information visit:

http://www.epa.gov/airnow/aqibroch

*LINK TO EXCEEDANCE & HEALTH STATEMENT INFO FOR THE 2005-06 & 2006-07
FORECAST SEASONS* <http://www.azdeq.gov/environ/air/ozone/pmstats.pdf> 

AIR QUALITY FORECAST FOR WEDNESDAY, JUNE 6, 2007

This report is updated by 1:00 p.m. Sunday thru Friday and is valid

for areas within and bordering Maricopa County in Arizona

FORECAST

UDATE

NOTICES

(*SEE BELOW FOR DETAILS) 

AIR POLLUTANT

YESTERDAY

MON 06/04/2007

NONE

Highest AQI Reading/Site

(Preliminary data only)

TODAY

TUE 06/05/2007

PM-10 HEALTH WATCH

DUST IN THE P.M.

TOMORROW

WED 06/06/2007

HIGH POLLUTION ADVISORY 

(PM-10)

DUST

EXTENDED

THU 06/07/2007

NONE

1BO3*

64

TONTO NAT'L MON.

49

GOOD

47

GOOD

50

GOOD

2BCO*

8

WEST PHOENIX

10

GOOD

7

GOOD

8

GOOD

3BPM-10*

74

WEST 43RD

94

MODERATE

125

UNHEALTHY  FOR SENSITIVE GROUPS

78

MODERATE

4BPM-2.5*

55

DURANGO 

41

GOOD

65

MODERATE

58

MODERATE

* O3 = Ozone      CO = Carbon Monoxide      PM-10 = Particles 10 microns
& smaller      PM-2.5 = Particles smaller than 2.5 microns

*"Ozone Health Watch" means that the highest concentration of OZONE may
approach the federal health standard.

"PM-10 or PM-2.5 Health Watch" means that the highest concentration of
PM-10 or PM-2.5 may approach the federal health standard.

"High Pollution Advisory" means that the highest concentration of OZONE,
PM-10, or PM-2.5 may exceed the federal health standard.

"DUST" means that short periods of high PM-10 concentrations caused by
outflow from thunderstorms are possible.

Health message for Tuesday, June 5:U  Unusually sensitive people should
consider limiting prolonged outdoor exertion.

UHealth message for Wednesday, June 6:U  Active children and adults and
people with respiratory disease, such as asthma, should limit outdoor
exertion.

24BUSynopsis and Discussion

*A PM-10 Health Watch remains in effect for Tuesday, June 5, 2007.

A PM-10 HPA has been issued for Wednesday, June, 6, 2007*

Though the winds haven't yet picked up across the Valley, a brown haze
has begun to filter into the region from the northwest.  Phoenixvis.net
<http://phoenixvis.net/somt1/index.html>  cameras are a good source to
see this influx of dust.  PM-10 monitors have also registered a notable
spike Tuesday morning.  It's a strong trough of low pressure over the
western U.S. that is and will continue to be responsible for this dust
event Tuesday through early Thursday.  Winds should begin to increase
Tuesday afternoon.  Gusts near 40 mph are possible across the desert
locations Wednesday as an associated cold front pushes through.  Cooler
air will drop afternoon desert temps into the low to mid 90s Wednesday
and Thursday.  Once this system moves out of the area Friday and
Saturday, temperatures will rebound back to the triple digits.  Ozone
will be limited the next few days as winds continue to break up
pre-existing ozone and keep the precursors from forming new ozone.  Due
to the forecasted high winds and lack of rain, we are issuing a PM-10
High Pollution Advisory for Wednesday, June 6, 2007.  This means
everyone should be conscious of their outdoor exertion, especially
active children and adults and people with respiratory disease. Check
back tomorrow to see when conditions will begin to improve.  Have a good
day!  -J.Paul

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