[ADEQ Forecasts] ADEQ Daily Air Quality Forecast for Wed., June 13

forecasts@lists.azdeq.gov
Tue Jun 12 11:37:25 MST 2007


For more information, or if you have problems viewing the image, please
visit our Web page:

http://www.azdeq.gov/environ/air/ozone/ensemble.pdf

 

  

 

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 13, 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

DATE

 

NOTICES

(*SEE BELOW FOR DETAILS) 

 

 

 

 

AIR POLLUTANT

YESTERDAY

MON 06/11/2007

 

 

DUST   

 

 

 

 

 

 

Highest AQI Reading/Site

(Preliminary data only)

TODAY

TUE 06/12/2007

 

 

NONE  

 

 

 

 

 

 

 

TOMORROW

WED 06/13/2007

 

 

NONE  

 

 

 

 

 

 

EXTENDED

THU 06/14/2007

 

 

NONE

 

 

 

 

 

 

 

 


O3*


39


QUEEN VALLEY

64

MODERATE


74


MODERATE


82


MODERATE

 


CO*


07


GREENWOOD


 & 


WEST INDIAN SCHOOL 

10

GOOD


08


GOOD

05

GOOD

 


PM-10*


77


 WEST FORTY THIRD


67


MODERATE


63


MODERATE


59


MODERATE

 


PM-2.5*


34


DURANGO

41

GOOD


33


GOOD


29


GOOD

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

* 

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 12:   Unusually sensitive people should
consider limiting prolonged or heavy exertion outdoors. 

Health message for Wednesday, June 13:   Unusually sensitive people
should consider limiting prolonged or heavy exertion outdoors. 

 

Synopsis and Discussion

Blowing dust - generated by gusty winds from convective cloud outflow
boundaries - took its toll on local and regional air quality Monday
afternoon and evening.  At 6:00 p.m. hourly coarse particle (PM-10)
concentrations reached 464.5 and 461.2ug/m3 at the Buckeye and West
Forty Third monitoring sites, respectively; however, areas in Pinal
County fared much worse. The disturbance responsible for the active
weather outbreak is headed east, making way for a strong Pacific ridge
to build strongly eastward over Arizona on Wednesday.  An anti-cyclonic
center of circulation aloft is forecast to become established directly
over the state by Thursday afternoon; intense sunshine, a very dry air
mass, and strong subsidence over the valley will lead to highs at or
above 110 degrees that day.  Also, the overhead temperature at the 5K'
level this morning is estimated to increase by as much as 22 deg F by
5:00 p.m. Thursday.  Although such conditions favor efficient ozone
production, for unhealthy levels to be reached above average
accumulation must occur.  This is not likely to be the case Thursday
since westerly valley (upslope) winds are currently indicated to be
present from the surface to at least 7K' Thursday.  Since subtle winds
changes can make a big difference in local ozone levels, this situation
will remain under scrutiny. -Reith 

 

 

 

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