AIR STAGNATION ADVISORY
Warning Issue Date: 420 PM MST THU DEC 31 2009
...AIR STAGNATION ADVISORY IN EFFECT UNTIL 5 PM MST THURSDAY...
THE AIR STAGNATION ADVISORY IS IN EFFECT UNTIL 5 PM MST THURSDAY.
* THE MONTANA DEPARTMENT OF ENVIRONMENTAL QUALITY HAS DECLARED AN
AIR STAGNATION ADVISORY VALID UNTIL FURTHER NOTICE FOR HELENA
AND SOUTHERN PORTIONS OF LEWIS AND CLARK COUNTY.
* STRONG INVERSIONS ARE STILL CAUSING PROBLEMS IN HELENA...AND A
STAGNATION ADVISORY HAS BEEN CONTINUED FOR HELENA AND THE
SOUTHERN PORTION OF LEWIS AND CLARK COUNTY. PARTICULATE LEVELS
IN HELENA ARE AT UNHEALTHY LEVELS. WHEN AIR QUALITY LEVELS ARE
AT UNHEALTHY LEVELS...MDEQ RECOMMENDS THAT PEOPLE WITH
RESPIRATORY OR HEART DISEASE...THE ELDERLY...AND CHILDREN SHOULD
AVOID PROLONGED EXERTION. EVERYONE ELSE SHOULD LIMIT PROLONGED
EXERTION.
* FOR MORE INFORMATION...PLEASE VISIT THE DEPARTMENTS WEBSITE AT
WWW.DEQ.STATE.MT.US/AIRQUALITY/AQINFO.ASP OR
SVC.MT.GOV/DEQ/AQREPORT/MOSTRECENTUPDATE.ASPX
PRECAUTIONARY/PREPAREDNESS ACTIONS...
AN AIR STAGNATION ADVISORY INDICATES THAT DUE TO LIMITED MOVEMENT
OF AN AIRMASS ACROSS THE ADVISORY AREA...POLLUTION WILL INCREASE.
CHECK WITH YOUR LOCAL AIR QUALITY AGENCY FOR POSSIBLE
RESTRICTIONS IN YOUR AREA. FOR ADDITIONAL WEATHER INFORMATION...
CHECK OUR WEBSITE AT WWW.WEATHER.GOV/GREATFALLS.
$$
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