Lewiston Area

 Air Stagnation Advisory  Statement as of 9:12 am PST on November 30, 2015

... Air stagnation advisory remains in effect until 4 am PST

* air quality... poor ventilation will result in a build up of
pollutants near the surface. Minor improvements in air quality
will be possible Tuesday night through Thursday... but most areas
will not see improvement until a cold front arrives Friday.

* Timing... through Friday morning.

* Impacts... prolonged periods of stagnant air can hold fine
particulates close to the ground and degrade air quality.

Precautionary/preparedness actions...

An air stagnation advisory indicates that due to limited movement
of an air mass across the advisory area... pollution has the
potential to increase to dangerous levels. Persons with
respiratory illness should follow their physicians advice for
dealing with high levels of air pollution.

During periods of stagnant air... state air quality agencies
highly recommended that no outdoor burning occur and that
residential wood burning devices be limited as much as possible.
According to state air quality agencies... prolonged periods of
stagnant air can hold pollutants close to the ground... where
people live and breathe.

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