Moderate Expected Likely Air Stagnation Advisory Air Stagnation Advisory issued January 13 at 2:38PM PST until January 16 at 10:00AM PST by NWS Medford OR Jan 13, 2:38 PM → Jan 16, 10:00 AM WHAT: For the Air Stagnation Advisory within the valleys ofJosephine and Jackson Counties, decreased air quality may develop.This is due to an inversion and stagnant air conditions near thesurface that will continue to trap pollutants. For the FreezingFog Advisory, visibility under 1/4 a mile in freezing fog withinJackson and Josephine Counties. WHERE: Within the valleys of Josephine and Jackson Counties. WHEN: For the Air Stagnation Advisory, until 10 AM PST Friday.For the Freezing Fog Advisory, from midnight tonight to noon PSTWednesday. IMPACTS: Dense freezing fog could make driving conditionshazardous and create some slick surfaces. Air quality unhealthyfor sensitive groups may develop. + Read More Persons with respiratory illness should follow their physicians advice for dealing with high levels of air pollution during periods of stagnant air. If driving, slow down, use your headlights, and leave plenty of distance ahead of you. Updated: Jan 13, 2:53 PM Source: NWS Alert