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

* WHAT…For the Freezing Fog Advisory, visibility of less than a
quarter of mile in freezing 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 eastern Curry County and Josephine County and
Jackson County. This includes, the Illinois, Rogue and Applegate
valleys, including Grants Pass, Selma, Cave Junction, Applegate,
Rogue River, Medford, Eagle Point, Jacksonville, Ashland and
surrounding areas.

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

* IMPACTS…Low visibility could make driving conditions hazardous.
Freezing fog may allow spots of ice to develop on roadways. 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.