Waterville Plateau Severe Watches & Warnings NOAA Weather Radio

Air Stagnation Advisory
Statement as of 9:42 AM PST on December 17, 2014

...Air stagnation advisory remains in effect until noon PST Friday...

* air quality...light winds and stable conditions will increase the potential for build up of pollutants near the surface.

* Timing...high pressure will persist through Friday morning.

* Impacts...prolonged periods of stagnant air can lock fine particulate matter 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.

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