[ADEQ Forecasts] ADEQ Daily Air Quality Forecast for Tues., Feb. 27

Mon Feb 26 15:18:13 MST 2007

For more information, or if you have problems viewing the images, 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 TUESDAY, FEBRUARY 27, 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

SUN 02/25/2007

NONE    

Highest AQI Reading/Site

(Preliminary data only)

TODAY

MON 02/26/2007

NONE 

TOMORROW

TUE 02/27/2007

NONE 

EXTENDED

WED 02/28/2007

PM-10 HEALTH 

WATCH 

POSSIBLE

O3*

38

APACHE JUNCTION

32

GOOD

35

GOOD

41

GOOD

CO*

25

WEST INDIAN SCHOOL

24

GOOD

18

GOOD

21

GOOD

PM-10*

26

WEST FORTY THIRD

51

MODERATE

77

MODERATE

90

MODERATE

PM-2.5*

55

PHOENIX SUPERSITE

55

MODERATE

42

GOOD

46

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 Monday, Feb 26: Unusually sensitive people should
consider reducing prolonged or heavy exertion. 

Health message for Tuesday, Feb 27: Unusually sensitive people should
consider reducing prolonged or heavy exertion. 

Synopsis and Discussion

Another vigorous but dry upper trough and surface cold front are on the
way toward Arizona from the northwest.  Once again it appears that gusty
winds will be the major feature both Tuesday and Wednesday-with strong
winds possible even during the overnight hours during the frontal
passage.  By Wednesday morning over the local forecast area westerly
wind speeds are forecast to be as high as 200 mph at 35K', 98 mph at
18K', and 50 mph at 10K'.  Depending on the degree of cloud cover, at
least some of this momentum is likely to reach the surface overhead as
well as upstream where a long fetch of dry desert soil exists.  As a
result, there is again the potential for not only localized blowing dust
but also for suspended dust to be transported over the valley.  A PM-10
Health Watch issuance may be needed for Wednesday as a precaution for
those with heart or lung disease.  -Reith    

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