Air stagnation advisory in effect through late Tuesday morning
Jackson County residents should count on a stagnant air mass in the area through about 11 a.m. Tuesday, according to the National Weather Service.
Weather officials have issued an air stagnation advisory that will be in effect until then. High pressure over the region trapped air in the valleys, prompting the air stagnation advisory. The high pressure is expected to weaken temporarily Tuesday, but likely will return by week's end and continue through the weekend.
The loitering air causes a build up of pollutants that can make it more difficult to breathe for those with sensitive respiratory conditions.
A dense fog advisory was in effect through 10 a.m. today. One Alaska Airlines flight from Portland was canceled for weather-related reasons, but airport director Bern Case said he wasn't sure if the weather problem was in Medford or Portland. Because that plane didn't arrive in Medford, its return flight to Portland also was canceled.