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E-M:/ Saturday/weekend Smog Prediction



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Enviro-Mich message from "Alex J. Sagady & Associates" <ajs@sagady.com>
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Saturday, July 2, WILL BE an OzoneAction! Day for both Southeast and West
Michigan. 


OZONE ACTION! WEATHER SUMMARY

Friday, July 2, 1999 

The hottest temperatures of the year will invade Michigan just in 
time for the 4th of July holiday weekend. Afternoon
temperatures over 90 degrees and heat indexes over 100 
degrees will be a reality for much of the weekend. Nighttime
temperatures are likely not to drop much below 70 degrees. 

The high temperatures, humidity and strong sun component provide 
a perfect recipe for elevated ozone levels. As Saturday
winds begin to shift to a more southerly direction and any remaining 
cloud cover breaks up, ozone levels will begin to rise. On
the severity level, Saturday ozone levels will probably just exceed 
the 8-hour unhealthy threshold with the severity potential
increasing during Sunday and Monday. As a result, it will be 
important to follow OzoneAction! Day guidelines on Saturday to
help minimize elevated levels on Sunday and Monday 

The holiday weekend ozone forecast will be provided Saturday after 
reviewing the most current computer model predictions
and ozone monitor levels. 


FROM MDEQ Air Quality Division Modelling and Meteorological Unit




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