NWS Medford OR
Jan-10 3:41 - Jan-11 10:00
* WHAT...For the Air Stagnation Advisory Within the valleys in
Josephine and Jackson Counties, unhealthy air quality could
develop. This is due to an inversion and stagnant air conditions
near the surface that will continue to trap pollutants. For the
Freezing Fog Advisory, visibility one quarter mile or less in
freezing fog.
* WHERE...Within the valleys of Josephine and Jackson Counties.
* WHEN...For the Freezing Fog Advisory, until 10 AM PST this
morning. For the Air Stagnation Advisory, until 10 AM PST Sunday.
* IMPACTS...Poor air quality may cause issues for people with
respiratory problems.
Most outdoor burning will likely be prohibited as poor ventilation
develops. Freezing fog can create slick conditions on solid
surfaces like exposed roads and aircraft wings.
* ADDITIONAL DETAILS...A strong area of high pressure will build in
through Saturday, then weaken slightly on Sunday. This will lead
to poor mixing of the atmosphere and the trapping of pollutants.
The high is likely to strengthen again early next week.