Public Information Statement
Issued by NWS Great Falls, MT

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PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE GREAT FALLS MT
1015 AM MDT SAT AUG 15 2015

...AIR QUALITY ALERT IN EFFECT UNTIL 4 PM MDT THIS AFTERNOON...

THE MONTANA DEPARTMENT OF ENVIRONMENTAL QUALITY HAS ISSUED AN AIR
QUALITY ALERT FOR BEAVERHEAD...MADISON...JEFFERSON...AND LEWIS AND
CLARK COUNTIES IN EFFECT UNTIL 4 PM THIS AFTERNOON.

AN AIR QUALITY ALERT MEANS THAT PARTICULATES HAVE BEEN TRENDING
UPWARDS AND THAT AN EXCEEDENCE OF THE 24 HOUR NATIONAL AMBIENT AIR
QUALITY STANDARD (NAAQS) HAS OCCURRED OR MAY OCCUR IN THE NEAR
FUTURE.

PARTICULATE LEVELS IN HELENA ARE CURRENTLY REPORTED AS GOOD
HOWEVER A THICK HAZE IS PRESENT OVER THE VALLEY AND CONCENTRATIONS
ARE ANTICIPATED TO BE UNHEALTHY ABOVE THE VALLEY FLOW.

AN AIR QUALITY ALERT MEANS THAT PARTICULATES HAVE BEEN TRENDING
UPWARDS AND THAT AN EXCEEDENCE OF THE 24 HOUR NATIONAL AMBIENT AIR
QUALITY STANDARD (NAAQS) HAS OCCURRED OR MAY OCCUR IN THE NEAR
FUTURE.

$$


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