Riverside State Park

Air Stagnation Advisory issued December 29 at 11:45AM PST until January 1 at 12:00PM PST by NWS Spokane WA

* WHAT...Stagnant conditions will have potential to trap pollutants near the ground with deteriorated air quality. * WHERE...Portions of North and North Central Idaho and North Central, Northeast, and Southeast Washington. * WHEN...Until noon PST Thursday. * IMPACTS...Periods of air stagnation can lead to the buildup of pollutants near the surface.