Dense Fog Advisory issued January 15 at 9:36AM PST until January 15 at 12:00PM PST by NWS Medford OR

* WHAT…For the Dense Fog Advisory, visibility of less than a
quarter of a mile in dense fog. For the Air Stagnation Advisory,
poor air quality will continue. This is due to an inversion and
stagnant air conditions near the surface that will continue to
trap pollutants.

* WHERE…Valleys in central Douglas County. This includes Roseburg,
Sutherlin, Elkton, Camas Valley, Canyonville, Glendale and
surrounding areas.

* WHEN…For the Dense Fog Advisory, until noon PST today. For the
Air Stagnation Advisory, until 10 AM PST Thursday.

* IMPACTS…Low visibility could make driving conditions hazardous.
Poor air quality may cause issues for people with respiratory
problems.

* ADDITIONAL DETAILS…Strong valley inversions, very shallow mixing
layers of less than 1000 feet, and calm winds are expected
throughout the advisory time, especially during the overnight and
morning hours. A weak front on Thursday may allow for a brief
period of improved mixing and particulate dispersion.