* WHAT…For the Dense Fog Advisory, visibility one quarter mile or
less in dense fog, and freezing fog in spots across rural areas.
For the Air Stagnation Advisory, a persistent inversion with light
and variable winds will lead to a period of stagnant air
conditions. This scenario could result in the build up of air
pollutants near the surface over time.
* WHERE…Central Willamette Valley.
* WHEN…For the Air Stagnation Advisory, until 4 PM PST Tuesday.
For the Dense Fog Advisory, until 11 AM PST this morning.
* IMPACTS…Low visibility could make driving conditions hazardous.
Deteriorating air quality may cause issues for people with
respiratory problems.